./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/email_spec1_product22.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/email_spec1_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 42f22b71ca501045e9e0edcb0da831d4df6c9a8e36f5c60b39b69b3cb971731d --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 06:02:04,192 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 06:02:04,195 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 06:02:04,220 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 06:02:04,221 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 06:02:04,222 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 06:02:04,224 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 06:02:04,226 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 06:02:04,228 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 06:02:04,231 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 06:02:04,232 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 06:02:04,234 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 06:02:04,234 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 06:02:04,235 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 06:02:04,236 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 06:02:04,237 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 06:02:04,238 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 06:02:04,239 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 06:02:04,241 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 06:02:04,245 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 06:02:04,247 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 06:02:04,247 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 06:02:04,248 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 06:02:04,249 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 06:02:04,250 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 06:02:04,252 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 06:02:04,252 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 06:02:04,253 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 06:02:04,254 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 06:02:04,254 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 06:02:04,255 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 06:02:04,255 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 06:02:04,256 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 06:02:04,257 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 06:02:04,257 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 06:02:04,258 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 06:02:04,258 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 06:02:04,259 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 06:02:04,259 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 06:02:04,259 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 06:02:04,260 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 06:02:04,261 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 06:02:04,262 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 06:02:04,284 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 06:02:04,284 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 06:02:04,285 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 06:02:04,285 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 06:02:04,285 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 06:02:04,285 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 06:02:04,286 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 06:02:04,286 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 06:02:04,286 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 06:02:04,287 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 06:02:04,287 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 06:02:04,287 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 06:02:04,287 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 06:02:04,288 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 06:02:04,288 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 06:02:04,288 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 06:02:04,288 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 06:02:04,288 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 06:02:04,288 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 06:02:04,288 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 06:02:04,289 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 06:02:04,290 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 06:02:04,290 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 06:02:04,290 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 06:02:04,290 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 06:02:04,290 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 06:02:04,290 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 06:02:04,291 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 06:02:04,291 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 06:02:04,291 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 06:02:04,291 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 06:02:04,291 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 06:02:04,292 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 06:02:04,292 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 42f22b71ca501045e9e0edcb0da831d4df6c9a8e36f5c60b39b69b3cb971731d [2022-07-12 06:02:04,507 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 06:02:04,536 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 06:02:04,539 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 06:02:04,540 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 06:02:04,540 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 06:02:04,541 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/email_spec1_product22.cil.c [2022-07-12 06:02:04,616 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c2696e12/dbab0b803e9944f5b950e9abb626e8ac/FLAG4a54c13b4 [2022-07-12 06:02:05,081 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 06:02:05,094 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec1_product22.cil.c [2022-07-12 06:02:05,147 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c2696e12/dbab0b803e9944f5b950e9abb626e8ac/FLAG4a54c13b4 [2022-07-12 06:02:05,417 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2c2696e12/dbab0b803e9944f5b950e9abb626e8ac [2022-07-12 06:02:05,419 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 06:02:05,420 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 06:02:05,421 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 06:02:05,422 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 06:02:05,424 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 06:02:05,424 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 06:02:05" (1/1) ... [2022-07-12 06:02:05,425 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@98e270f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:02:05, skipping insertion in model container [2022-07-12 06:02:05,425 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 06:02:05" (1/1) ... [2022-07-12 06:02:05,431 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 06:02:05,474 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 06:02:05,829 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec1_product22.cil.c[33239,33252] [2022-07-12 06:02:05,920 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 06:02:05,933 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 06:02:05,994 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/email_spec1_product22.cil.c[33239,33252] [2022-07-12 06:02:06,019 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 06:02:06,049 INFO L208 MainTranslator]: Completed translation [2022-07-12 06:02:06,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:02:06 WrapperNode [2022-07-12 06:02:06,050 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 06:02:06,051 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 06:02:06,051 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 06:02:06,051 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 06:02:06,057 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:02:06" (1/1) ... [2022-07-12 06:02:06,092 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:02:06" (1/1) ... [2022-07-12 06:02:06,188 INFO L137 Inliner]: procedures = 128, calls = 206, calls flagged for inlining = 59, calls inlined = 54, statements flattened = 1017 [2022-07-12 06:02:06,197 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 06:02:06,198 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 06:02:06,198 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 06:02:06,198 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 06:02:06,205 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:02:06" (1/1) ... [2022-07-12 06:02:06,206 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:02:06" (1/1) ... [2022-07-12 06:02:06,222 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:02:06" (1/1) ... [2022-07-12 06:02:06,223 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:02:06" (1/1) ... [2022-07-12 06:02:06,241 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:02:06" (1/1) ... [2022-07-12 06:02:06,257 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:02:06" (1/1) ... [2022-07-12 06:02:06,270 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:02:06" (1/1) ... [2022-07-12 06:02:06,274 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 06:02:06,275 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 06:02:06,275 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 06:02:06,275 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 06:02:06,292 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:02:06" (1/1) ... [2022-07-12 06:02:06,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 06:02:06,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 06:02:06,349 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 06:02:06,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 06:02:06,394 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2022-07-12 06:02:06,394 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2022-07-12 06:02:06,394 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2022-07-12 06:02:06,394 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2022-07-12 06:02:06,394 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2022-07-12 06:02:06,395 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2022-07-12 06:02:06,395 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2022-07-12 06:02:06,395 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2022-07-12 06:02:06,395 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2022-07-12 06:02:06,395 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2022-07-12 06:02:06,395 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2022-07-12 06:02:06,395 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2022-07-12 06:02:06,396 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2022-07-12 06:02:06,396 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2022-07-12 06:02:06,396 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2022-07-12 06:02:06,396 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2022-07-12 06:02:06,396 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2022-07-12 06:02:06,396 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2022-07-12 06:02:06,396 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2022-07-12 06:02:06,396 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2022-07-12 06:02:06,397 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2022-07-12 06:02:06,397 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 06:02:06,397 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2022-07-12 06:02:06,398 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2022-07-12 06:02:06,398 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2022-07-12 06:02:06,398 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2022-07-12 06:02:06,398 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2022-07-12 06:02:06,398 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2022-07-12 06:02:06,398 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2022-07-12 06:02:06,398 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2022-07-12 06:02:06,399 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2022-07-12 06:02:06,399 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2022-07-12 06:02:06,399 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2022-07-12 06:02:06,399 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2022-07-12 06:02:06,399 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2022-07-12 06:02:06,399 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2022-07-12 06:02:06,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 06:02:06,400 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2022-07-12 06:02:06,400 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2022-07-12 06:02:06,400 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 06:02:06,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 06:02:06,623 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 06:02:06,624 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 06:02:07,235 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 06:02:07,248 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 06:02:07,248 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-12 06:02:07,250 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 06:02:07 BoogieIcfgContainer [2022-07-12 06:02:07,250 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 06:02:07,252 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 06:02:07,252 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 06:02:07,255 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 06:02:07,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 06:02:05" (1/3) ... [2022-07-12 06:02:07,266 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21052fd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 06:02:07, skipping insertion in model container [2022-07-12 06:02:07,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:02:06" (2/3) ... [2022-07-12 06:02:07,267 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21052fd1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 06:02:07, skipping insertion in model container [2022-07-12 06:02:07,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 06:02:07" (3/3) ... [2022-07-12 06:02:07,269 INFO L111 eAbstractionObserver]: Analyzing ICFG email_spec1_product22.cil.c [2022-07-12 06:02:07,280 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 06:02:07,281 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 06:02:07,333 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 06:02:07,338 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@7d743985, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@176f95de [2022-07-12 06:02:07,339 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 06:02:07,343 INFO L276 IsEmpty]: Start isEmpty. Operand has 321 states, 251 states have (on average 1.5298804780876494) internal successors, (384), 255 states have internal predecessors, (384), 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) [2022-07-12 06:02:07,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-07-12 06:02:07,358 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:02:07,359 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] [2022-07-12 06:02:07,359 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:02:07,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:02:07,363 INFO L85 PathProgramCache]: Analyzing trace with hash 750536633, now seen corresponding path program 1 times [2022-07-12 06:02:07,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:02:07,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589569581] [2022-07-12 06:02:07,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:02:07,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:02:07,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:07,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:02:07,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:07,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 06:02:07,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:07,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 06:02:07,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:07,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 06:02:07,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:07,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 06:02:07,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:07,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-12 06:02:07,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:07,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 06:02:07,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:07,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-12 06:02:07,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:07,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-12 06:02:07,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:07,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-12 06:02:07,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:07,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-12 06:02:07,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:07,745 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-12 06:02:07,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:02:07,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589569581] [2022-07-12 06:02:07,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589569581] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 06:02:07,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2039537315] [2022-07-12 06:02:07,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:02:07,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:02:07,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 06:02:07,750 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 06:02:07,751 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 06:02:08,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:08,012 INFO L263 TraceCheckSpWp]: Trace formula consists of 951 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-12 06:02:08,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 06:02:08,031 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-12 06:02:08,047 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 06:02:08,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2039537315] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:02:08,047 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 06:02:08,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [9] total 9 [2022-07-12 06:02:08,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866612999] [2022-07-12 06:02:08,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:02:08,053 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-12 06:02:08,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:02:08,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-12 06:02:08,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-12 06:02:08,079 INFO L87 Difference]: Start difference. First operand has 321 states, 251 states have (on average 1.5298804780876494) internal successors, (384), 255 states have internal predecessors, (384), 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) [2022-07-12 06:02:08,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:02:08,148 INFO L93 Difference]: Finished difference Result 483 states and 714 transitions. [2022-07-12 06:02:08,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-12 06:02:08,150 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 [2022-07-12 06:02:08,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:02:08,166 INFO L225 Difference]: With dead ends: 483 [2022-07-12 06:02:08,167 INFO L226 Difference]: Without dead ends: 314 [2022-07-12 06:02:08,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-12 06:02:08,173 INFO L413 NwaCegarLoop]: 480 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, 480 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:02:08,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 480 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:02:08,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2022-07-12 06:02:08,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 314. [2022-07-12 06:02:08,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 245 states have (on average 1.5224489795918368) internal successors, (373), 248 states have internal predecessors, (373), 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) [2022-07-12 06:02:08,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 472 transitions. [2022-07-12 06:02:08,232 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 472 transitions. Word has length 89 [2022-07-12 06:02:08,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:02:08,234 INFO L495 AbstractCegarLoop]: Abstraction has 314 states and 472 transitions. [2022-07-12 06:02:08,234 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) [2022-07-12 06:02:08,234 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 472 transitions. [2022-07-12 06:02:08,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-12 06:02:08,241 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:02:08,241 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] [2022-07-12 06:02:08,269 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-12 06:02:08,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-07-12 06:02:08,443 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:02:08,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:02:08,443 INFO L85 PathProgramCache]: Analyzing trace with hash 690999741, now seen corresponding path program 1 times [2022-07-12 06:02:08,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:02:08,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756015893] [2022-07-12 06:02:08,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:02:08,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:02:08,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:08,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:02:08,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:08,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 06:02:08,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:08,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 06:02:08,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:08,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 06:02:08,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:08,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 06:02:08,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:08,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-12 06:02:08,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:08,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-12 06:02:08,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:08,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 06:02:08,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:08,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 06:02:08,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:08,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-12 06:02:08,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:08,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-12 06:02:08,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:08,579 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-12 06:02:08,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:02:08,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756015893] [2022-07-12 06:02:08,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756015893] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 06:02:08,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1615500951] [2022-07-12 06:02:08,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:02:08,580 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:02:08,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 06:02:08,582 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 06:02:08,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-12 06:02:08,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:08,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 952 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 06:02:08,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 06:02:08,941 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-12 06:02:08,941 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 06:02:08,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1615500951] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:02:08,942 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 06:02:08,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-07-12 06:02:08,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271955323] [2022-07-12 06:02:08,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:02:08,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 06:02:08,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:02:08,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 06:02:08,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-12 06:02:08,953 INFO L87 Difference]: Start difference. First operand 314 states and 472 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) [2022-07-12 06:02:09,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:02:09,014 INFO L93 Difference]: Finished difference Result 473 states and 695 transitions. [2022-07-12 06:02:09,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 06:02:09,036 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 [2022-07-12 06:02:09,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:02:09,040 INFO L225 Difference]: With dead ends: 473 [2022-07-12 06:02:09,040 INFO L226 Difference]: Without dead ends: 317 [2022-07-12 06:02:09,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-12 06:02:09,043 INFO L413 NwaCegarLoop]: 470 mSDtfsCounter, 1 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 938 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:02:09,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 938 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:02:09,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2022-07-12 06:02:09,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 316. [2022-07-12 06:02:09,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 247 states have (on average 1.5182186234817814) internal successors, (375), 250 states have internal predecessors, (375), 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) [2022-07-12 06:02:09,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 474 transitions. [2022-07-12 06:02:09,072 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 474 transitions. Word has length 90 [2022-07-12 06:02:09,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:02:09,072 INFO L495 AbstractCegarLoop]: Abstraction has 316 states and 474 transitions. [2022-07-12 06:02:09,072 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) [2022-07-12 06:02:09,072 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 474 transitions. [2022-07-12 06:02:09,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-07-12 06:02:09,076 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:02:09,076 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] [2022-07-12 06:02:09,098 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-12 06:02:09,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-07-12 06:02:09,277 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:02:09,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:02:09,277 INFO L85 PathProgramCache]: Analyzing trace with hash -518804284, now seen corresponding path program 1 times [2022-07-12 06:02:09,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:02:09,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019590170] [2022-07-12 06:02:09,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:02:09,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:02:09,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:09,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:02:09,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:09,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 06:02:09,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:09,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 06:02:09,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:09,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 06:02:09,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:09,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 06:02:09,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:09,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-12 06:02:09,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:09,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 06:02:09,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:09,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 06:02:09,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:09,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 06:02:09,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:09,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-12 06:02:09,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:09,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-12 06:02:09,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:09,428 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-12 06:02:09,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:02:09,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019590170] [2022-07-12 06:02:09,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019590170] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 06:02:09,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [317324174] [2022-07-12 06:02:09,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:02:09,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:02:09,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 06:02:09,431 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 06:02:09,459 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-12 06:02:09,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:09,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 979 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 06:02:09,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 06:02:09,652 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-12 06:02:09,652 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 06:02:09,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [317324174] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:02:09,653 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 06:02:09,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-07-12 06:02:09,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592421206] [2022-07-12 06:02:09,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:02:09,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 06:02:09,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:02:09,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 06:02:09,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-12 06:02:09,656 INFO L87 Difference]: Start difference. First operand 316 states and 474 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) [2022-07-12 06:02:09,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:02:09,683 INFO L93 Difference]: Finished difference Result 667 states and 1015 transitions. [2022-07-12 06:02:09,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 06:02:09,683 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 [2022-07-12 06:02:09,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:02:09,688 INFO L225 Difference]: With dead ends: 667 [2022-07-12 06:02:09,690 INFO L226 Difference]: Without dead ends: 378 [2022-07-12 06:02:09,692 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-12 06:02:09,693 INFO L413 NwaCegarLoop]: 497 mSDtfsCounter, 115 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 922 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:02:09,694 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 922 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:02:09,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2022-07-12 06:02:09,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 370. [2022-07-12 06:02:09,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 290 states have (on average 1.5344827586206897) internal successors, (445), 293 states have internal predecessors, (445), 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) [2022-07-12 06:02:09,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 566 transitions. [2022-07-12 06:02:09,723 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 566 transitions. Word has length 99 [2022-07-12 06:02:09,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:02:09,723 INFO L495 AbstractCegarLoop]: Abstraction has 370 states and 566 transitions. [2022-07-12 06:02:09,724 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) [2022-07-12 06:02:09,724 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 566 transitions. [2022-07-12 06:02:09,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-07-12 06:02:09,727 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:02:09,727 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] [2022-07-12 06:02:09,748 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-12 06:02:09,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:02:09,944 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:02:09,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:02:09,944 INFO L85 PathProgramCache]: Analyzing trace with hash 214954666, now seen corresponding path program 1 times [2022-07-12 06:02:09,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:02:09,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900995167] [2022-07-12 06:02:09,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:02:09,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:02:09,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:09,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:02:09,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:09,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 06:02:09,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:09,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 06:02:09,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:09,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-12 06:02:10,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:10,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 06:02:10,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:10,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-12 06:02:10,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:10,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-12 06:02:10,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:10,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 06:02:10,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:10,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-12 06:02:10,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:10,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-12 06:02:10,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:10,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-12 06:02:10,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:10,037 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-12 06:02:10,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:02:10,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900995167] [2022-07-12 06:02:10,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900995167] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 06:02:10,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1204129034] [2022-07-12 06:02:10,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:02:10,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:02:10,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 06:02:10,038 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 06:02:10,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-12 06:02:10,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:10,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 986 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-12 06:02:10,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 06:02:10,297 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-12 06:02:10,298 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 06:02:10,298 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1204129034] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:02:10,298 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 06:02:10,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2022-07-12 06:02:10,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967606381] [2022-07-12 06:02:10,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:02:10,299 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 06:02:10,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:02:10,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 06:02:10,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-07-12 06:02:10,300 INFO L87 Difference]: Start difference. First operand 370 states and 566 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) [2022-07-12 06:02:10,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:02:10,356 INFO L93 Difference]: Finished difference Result 731 states and 1122 transitions. [2022-07-12 06:02:10,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 06:02:10,357 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 [2022-07-12 06:02:10,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:02:10,360 INFO L225 Difference]: With dead ends: 731 [2022-07-12 06:02:10,360 INFO L226 Difference]: Without dead ends: 372 [2022-07-12 06:02:10,361 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 [2022-07-12 06:02:10,363 INFO L413 NwaCegarLoop]: 463 mSDtfsCounter, 133 mSDsluCounter, 1236 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 1699 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:02:10,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 1699 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:02:10,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2022-07-12 06:02:10,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 372. [2022-07-12 06:02:10,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 291 states have (on average 1.5326460481099657) internal successors, (446), 295 states have internal predecessors, (446), 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) [2022-07-12 06:02:10,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 569 transitions. [2022-07-12 06:02:10,392 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 569 transitions. Word has length 100 [2022-07-12 06:02:10,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:02:10,392 INFO L495 AbstractCegarLoop]: Abstraction has 372 states and 569 transitions. [2022-07-12 06:02:10,392 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) [2022-07-12 06:02:10,392 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 569 transitions. [2022-07-12 06:02:10,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-12 06:02:10,394 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:02:10,394 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] [2022-07-12 06:02:10,415 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-12 06:02:10,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:02:10,595 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:02:10,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:02:10,596 INFO L85 PathProgramCache]: Analyzing trace with hash 46529207, now seen corresponding path program 1 times [2022-07-12 06:02:10,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:02:10,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991236678] [2022-07-12 06:02:10,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:02:10,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:02:10,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:10,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:02:10,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:10,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 06:02:10,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:10,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 06:02:10,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:10,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:02:10,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:10,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-12 06:02:10,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:10,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-12 06:02:10,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:10,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-12 06:02:10,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:10,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-12 06:02:10,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:10,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 06:02:10,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:10,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-12 06:02:10,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:10,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-12 06:02:10,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:10,715 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-12 06:02:10,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:02:10,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991236678] [2022-07-12 06:02:10,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991236678] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 06:02:10,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1435938042] [2022-07-12 06:02:10,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:02:10,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:02:10,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 06:02:10,717 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 06:02:10,718 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-12 06:02:10,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:10,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 987 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-12 06:02:10,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 06:02:10,958 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-07-12 06:02:10,959 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 06:02:10,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1435938042] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:02:10,959 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 06:02:10,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2022-07-12 06:02:10,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079641655] [2022-07-12 06:02:10,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:02:10,960 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 06:02:10,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:02:10,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 06:02:10,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2022-07-12 06:02:10,961 INFO L87 Difference]: Start difference. First operand 372 states and 569 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) [2022-07-12 06:02:11,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:02:11,017 INFO L93 Difference]: Finished difference Result 733 states and 1127 transitions. [2022-07-12 06:02:11,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 06:02:11,018 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 [2022-07-12 06:02:11,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:02:11,020 INFO L225 Difference]: With dead ends: 733 [2022-07-12 06:02:11,020 INFO L226 Difference]: Without dead ends: 374 [2022-07-12 06:02:11,021 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 [2022-07-12 06:02:11,022 INFO L413 NwaCegarLoop]: 461 mSDtfsCounter, 132 mSDsluCounter, 1227 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 1688 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:02:11,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 1688 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 06:02:11,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2022-07-12 06:02:11,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 374. [2022-07-12 06:02:11,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 292 states have (on average 1.5308219178082192) internal successors, (447), 297 states have internal predecessors, (447), 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) [2022-07-12 06:02:11,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 575 transitions. [2022-07-12 06:02:11,036 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 575 transitions. Word has length 101 [2022-07-12 06:02:11,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:02:11,036 INFO L495 AbstractCegarLoop]: Abstraction has 374 states and 575 transitions. [2022-07-12 06:02:11,037 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) [2022-07-12 06:02:11,037 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 575 transitions. [2022-07-12 06:02:11,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-12 06:02:11,038 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:02:11,038 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] [2022-07-12 06:02:11,071 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-12 06:02:11,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:02:11,272 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:02:11,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:02:11,273 INFO L85 PathProgramCache]: Analyzing trace with hash -772646550, now seen corresponding path program 1 times [2022-07-12 06:02:11,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:02:11,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262565679] [2022-07-12 06:02:11,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:02:11,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:02:11,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:11,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:02:11,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:11,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 06:02:11,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:11,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 06:02:11,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:11,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:02:11,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:11,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 06:02:11,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:11,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-12 06:02:11,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:11,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 06:02:11,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:11,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 06:02:11,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:11,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-12 06:02:11,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:11,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 06:02:11,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:11,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-12 06:02:11,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:11,362 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-12 06:02:11,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:02:11,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262565679] [2022-07-12 06:02:11,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262565679] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:02:11,362 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:02:11,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 06:02:11,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594101684] [2022-07-12 06:02:11,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:02:11,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 06:02:11,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:02:11,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 06:02:11,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-12 06:02:11,365 INFO L87 Difference]: Start difference. First operand 374 states and 575 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) [2022-07-12 06:02:12,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:02:12,937 INFO L93 Difference]: Finished difference Result 898 states and 1389 transitions. [2022-07-12 06:02:12,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 06:02:12,937 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 [2022-07-12 06:02:12,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:02:12,941 INFO L225 Difference]: With dead ends: 898 [2022-07-12 06:02:12,941 INFO L226 Difference]: Without dead ends: 547 [2022-07-12 06:02:12,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-12 06:02:12,943 INFO L413 NwaCegarLoop]: 595 mSDtfsCounter, 1117 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 2110 mSolverCounterSat, 435 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1134 SdHoareTripleChecker+Valid, 1457 SdHoareTripleChecker+Invalid, 2545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 435 IncrementalHoareTripleChecker+Valid, 2110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-12 06:02:12,943 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1134 Valid, 1457 Invalid, 2545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [435 Valid, 2110 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-12 06:02:12,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2022-07-12 06:02:12,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 374. [2022-07-12 06:02:12,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 374 states, 292 states have (on average 1.5308219178082192) internal successors, (447), 297 states have internal predecessors, (447), 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) [2022-07-12 06:02:12,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 374 states to 374 states and 574 transitions. [2022-07-12 06:02:12,972 INFO L78 Accepts]: Start accepts. Automaton has 374 states and 574 transitions. Word has length 102 [2022-07-12 06:02:12,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:02:12,972 INFO L495 AbstractCegarLoop]: Abstraction has 374 states and 574 transitions. [2022-07-12 06:02:12,972 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) [2022-07-12 06:02:12,972 INFO L276 IsEmpty]: Start isEmpty. Operand 374 states and 574 transitions. [2022-07-12 06:02:12,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-07-12 06:02:12,974 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:02:12,975 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] [2022-07-12 06:02:12,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 06:02:12,975 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:02:12,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:02:12,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1577522791, now seen corresponding path program 2 times [2022-07-12 06:02:12,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:02:12,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565645130] [2022-07-12 06:02:12,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:02:12,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:02:12,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:13,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:02:13,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:13,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 06:02:13,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:13,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 06:02:13,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:13,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:02:13,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:13,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 06:02:13,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:13,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 06:02:13,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:13,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-12 06:02:13,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:13,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-12 06:02:13,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:13,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-12 06:02:13,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:13,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-12 06:02:13,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:13,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-12 06:02:13,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:13,088 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-12 06:02:13,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:02:13,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565645130] [2022-07-12 06:02:13,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565645130] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:02:13,089 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:02:13,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 06:02:13,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802507657] [2022-07-12 06:02:13,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:02:13,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 06:02:13,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:02:13,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 06:02:13,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-12 06:02:13,091 INFO L87 Difference]: Start difference. First operand 374 states and 574 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) [2022-07-12 06:02:14,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:02:14,713 INFO L93 Difference]: Finished difference Result 900 states and 1392 transitions. [2022-07-12 06:02:14,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 06:02:14,714 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 [2022-07-12 06:02:14,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:02:14,717 INFO L225 Difference]: With dead ends: 900 [2022-07-12 06:02:14,717 INFO L226 Difference]: Without dead ends: 549 [2022-07-12 06:02:14,719 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 [2022-07-12 06:02:14,721 INFO L413 NwaCegarLoop]: 596 mSDtfsCounter, 1112 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 2120 mSolverCounterSat, 435 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1129 SdHoareTripleChecker+Valid, 1458 SdHoareTripleChecker+Invalid, 2555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 435 IncrementalHoareTripleChecker+Valid, 2120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-12 06:02:14,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1129 Valid, 1458 Invalid, 2555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [435 Valid, 2120 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-12 06:02:14,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2022-07-12 06:02:14,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 376. [2022-07-12 06:02:14,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 293 states have (on average 1.52901023890785) internal successors, (448), 299 states have internal predecessors, (448), 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) [2022-07-12 06:02:14,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 577 transitions. [2022-07-12 06:02:14,759 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 577 transitions. Word has length 103 [2022-07-12 06:02:14,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:02:14,759 INFO L495 AbstractCegarLoop]: Abstraction has 376 states and 577 transitions. [2022-07-12 06:02:14,759 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) [2022-07-12 06:02:14,759 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 577 transitions. [2022-07-12 06:02:14,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-07-12 06:02:14,760 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:02:14,761 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] [2022-07-12 06:02:14,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 06:02:14,761 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:02:14,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:02:14,761 INFO L85 PathProgramCache]: Analyzing trace with hash -521515739, now seen corresponding path program 1 times [2022-07-12 06:02:14,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:02:14,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050559404] [2022-07-12 06:02:14,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:02:14,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:02:14,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:14,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:02:14,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:14,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 06:02:14,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:14,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 06:02:14,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:14,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:02:14,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:14,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 06:02:14,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:14,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 06:02:14,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:14,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 06:02:14,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:14,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 06:02:14,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:14,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 06:02:14,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:14,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-12 06:02:14,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:14,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 06:02:14,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:14,853 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-12 06:02:14,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:02:14,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050559404] [2022-07-12 06:02:14,853 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050559404] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:02:14,853 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:02:14,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-12 06:02:14,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088970706] [2022-07-12 06:02:14,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:02:14,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-12 06:02:14,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:02:14,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-12 06:02:14,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-07-12 06:02:14,854 INFO L87 Difference]: Start difference. First operand 376 states and 577 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) [2022-07-12 06:02:16,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:02:16,956 INFO L93 Difference]: Finished difference Result 898 states and 1387 transitions. [2022-07-12 06:02:16,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 06:02:16,957 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 [2022-07-12 06:02:16,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:02:16,961 INFO L225 Difference]: With dead ends: 898 [2022-07-12 06:02:16,962 INFO L226 Difference]: Without dead ends: 549 [2022-07-12 06:02:16,964 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 [2022-07-12 06:02:16,964 INFO L413 NwaCegarLoop]: 582 mSDtfsCounter, 1232 mSDsluCounter, 1188 mSDsCounter, 0 mSdLazyCounter, 3758 mSolverCounterSat, 492 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1232 SdHoareTripleChecker+Valid, 1770 SdHoareTripleChecker+Invalid, 4250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 492 IncrementalHoareTripleChecker+Valid, 3758 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-12 06:02:16,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1232 Valid, 1770 Invalid, 4250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [492 Valid, 3758 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-12 06:02:16,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549 states. [2022-07-12 06:02:16,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549 to 376. [2022-07-12 06:02:16,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 376 states, 293 states have (on average 1.52901023890785) internal successors, (448), 299 states have internal predecessors, (448), 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) [2022-07-12 06:02:16,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 376 states to 376 states and 576 transitions. [2022-07-12 06:02:16,999 INFO L78 Accepts]: Start accepts. Automaton has 376 states and 576 transitions. Word has length 104 [2022-07-12 06:02:16,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:02:16,999 INFO L495 AbstractCegarLoop]: Abstraction has 376 states and 576 transitions. [2022-07-12 06:02:16,999 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) [2022-07-12 06:02:16,999 INFO L276 IsEmpty]: Start isEmpty. Operand 376 states and 576 transitions. [2022-07-12 06:02:17,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-07-12 06:02:17,003 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:02:17,003 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] [2022-07-12 06:02:17,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 06:02:17,003 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:02:17,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:02:17,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1965456862, now seen corresponding path program 2 times [2022-07-12 06:02:17,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:02:17,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315446327] [2022-07-12 06:02:17,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:02:17,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:02:17,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:17,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:02:17,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:17,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 06:02:17,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:17,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 06:02:17,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:17,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:02:17,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:17,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 06:02:17,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:17,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 06:02:17,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:17,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 06:02:17,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:17,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-12 06:02:17,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:17,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 06:02:17,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:17,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 06:02:17,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:17,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-12 06:02:17,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:17,122 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-07-12 06:02:17,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:02:17,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315446327] [2022-07-12 06:02:17,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315446327] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:02:17,122 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:02:17,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-12 06:02:17,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404684249] [2022-07-12 06:02:17,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:02:17,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-12 06:02:17,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:02:17,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-12 06:02:17,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-07-12 06:02:17,124 INFO L87 Difference]: Start difference. First operand 376 states and 576 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) [2022-07-12 06:02:19,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:02:19,262 INFO L93 Difference]: Finished difference Result 900 states and 1393 transitions. [2022-07-12 06:02:19,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 06:02:19,264 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 [2022-07-12 06:02:19,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:02:19,267 INFO L225 Difference]: With dead ends: 900 [2022-07-12 06:02:19,267 INFO L226 Difference]: Without dead ends: 551 [2022-07-12 06:02:19,268 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 [2022-07-12 06:02:19,269 INFO L413 NwaCegarLoop]: 583 mSDtfsCounter, 1227 mSDsluCounter, 1188 mSDsCounter, 0 mSdLazyCounter, 3799 mSolverCounterSat, 482 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1227 SdHoareTripleChecker+Valid, 1771 SdHoareTripleChecker+Invalid, 4281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 482 IncrementalHoareTripleChecker+Valid, 3799 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-12 06:02:19,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1227 Valid, 1771 Invalid, 4281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [482 Valid, 3799 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-12 06:02:19,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2022-07-12 06:02:19,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 378. [2022-07-12 06:02:19,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 294 states have (on average 1.5272108843537415) internal successors, (449), 301 states have internal predecessors, (449), 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) [2022-07-12 06:02:19,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 582 transitions. [2022-07-12 06:02:19,288 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 582 transitions. Word has length 105 [2022-07-12 06:02:19,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:02:19,289 INFO L495 AbstractCegarLoop]: Abstraction has 378 states and 582 transitions. [2022-07-12 06:02:19,289 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) [2022-07-12 06:02:19,289 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 582 transitions. [2022-07-12 06:02:19,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-12 06:02:19,291 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:02:19,291 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] [2022-07-12 06:02:19,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 06:02:19,291 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:02:19,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:02:19,292 INFO L85 PathProgramCache]: Analyzing trace with hash 67705568, now seen corresponding path program 1 times [2022-07-12 06:02:19,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:02:19,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540488204] [2022-07-12 06:02:19,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:02:19,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:02:19,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:19,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:02:19,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:19,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 06:02:19,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:19,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 06:02:19,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:19,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:02:19,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:19,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 06:02:19,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:19,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 06:02:19,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:19,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-12 06:02:19,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:19,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 06:02:19,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:19,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 06:02:19,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:19,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-12 06:02:19,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:19,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-12 06:02:19,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:19,410 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-07-12 06:02:19,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:02:19,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540488204] [2022-07-12 06:02:19,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540488204] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 06:02:19,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769590905] [2022-07-12 06:02:19,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:02:19,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:02:19,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 06:02:19,416 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 06:02:19,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-12 06:02:19,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:19,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 992 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 06:02:19,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 06:02:19,651 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-12 06:02:19,651 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 06:02:19,728 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-12 06:02:19,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [769590905] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 06:02:19,729 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 06:02:19,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 4, 4] total 15 [2022-07-12 06:02:19,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142840592] [2022-07-12 06:02:19,729 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 06:02:19,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-12 06:02:19,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:02:19,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-12 06:02:19,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-07-12 06:02:19,730 INFO L87 Difference]: Start difference. First operand 378 states and 582 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) [2022-07-12 06:02:22,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:02:22,766 INFO L93 Difference]: Finished difference Result 1629 states and 2701 transitions. [2022-07-12 06:02:22,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-12 06:02:22,767 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 [2022-07-12 06:02:22,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:02:22,773 INFO L225 Difference]: With dead ends: 1629 [2022-07-12 06:02:22,773 INFO L226 Difference]: Without dead ends: 1282 [2022-07-12 06:02:22,776 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 [2022-07-12 06:02:22,776 INFO L413 NwaCegarLoop]: 732 mSDtfsCounter, 3318 mSDsluCounter, 2568 mSDsCounter, 0 mSdLazyCounter, 5092 mSolverCounterSat, 1313 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3320 SdHoareTripleChecker+Valid, 3300 SdHoareTripleChecker+Invalid, 6405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1313 IncrementalHoareTripleChecker+Valid, 5092 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-12 06:02:22,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3320 Valid, 3300 Invalid, 6405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1313 Valid, 5092 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-12 06:02:22,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1282 states. [2022-07-12 06:02:22,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1282 to 731. [2022-07-12 06:02:22,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 731 states, 583 states have (on average 1.5780445969125214) internal successors, (920), 590 states have internal predecessors, (920), 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) [2022-07-12 06:02:22,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 731 states to 731 states and 1191 transitions. [2022-07-12 06:02:22,828 INFO L78 Accepts]: Start accepts. Automaton has 731 states and 1191 transitions. Word has length 106 [2022-07-12 06:02:22,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:02:22,828 INFO L495 AbstractCegarLoop]: Abstraction has 731 states and 1191 transitions. [2022-07-12 06:02:22,829 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) [2022-07-12 06:02:22,829 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states and 1191 transitions. [2022-07-12 06:02:22,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-12 06:02:22,831 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:02:22,831 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] [2022-07-12 06:02:22,851 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-07-12 06:02:23,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 06:02:23,048 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:02:23,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:02:23,049 INFO L85 PathProgramCache]: Analyzing trace with hash 823937671, now seen corresponding path program 1 times [2022-07-12 06:02:23,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:02:23,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36307208] [2022-07-12 06:02:23,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:02:23,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:02:23,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:23,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:02:23,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:23,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 06:02:23,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:23,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 06:02:23,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:23,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:02:23,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:23,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 06:02:23,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:23,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 06:02:23,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:23,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 06:02:23,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:23,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-12 06:02:23,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:23,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-12 06:02:23,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:23,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-12 06:02:23,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:23,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-12 06:02:23,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:23,180 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-12 06:02:23,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:02:23,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36307208] [2022-07-12 06:02:23,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36307208] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:02:23,180 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:02:23,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 06:02:23,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1925370494] [2022-07-12 06:02:23,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:02:23,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 06:02:23,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:02:23,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 06:02:23,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:02:23,181 INFO L87 Difference]: Start difference. First operand 731 states and 1191 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) [2022-07-12 06:02:24,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:02:24,555 INFO L93 Difference]: Finished difference Result 1890 states and 3144 transitions. [2022-07-12 06:02:24,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 06:02:24,555 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 [2022-07-12 06:02:24,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:02:24,561 INFO L225 Difference]: With dead ends: 1890 [2022-07-12 06:02:24,561 INFO L226 Difference]: Without dead ends: 1237 [2022-07-12 06:02:24,564 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 [2022-07-12 06:02:24,564 INFO L413 NwaCegarLoop]: 635 mSDtfsCounter, 1107 mSDsluCounter, 689 mSDsCounter, 0 mSdLazyCounter, 1124 mSolverCounterSat, 479 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1122 SdHoareTripleChecker+Valid, 1324 SdHoareTripleChecker+Invalid, 1603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 479 IncrementalHoareTripleChecker+Valid, 1124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-12 06:02:24,564 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1122 Valid, 1324 Invalid, 1603 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [479 Valid, 1124 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-12 06:02:24,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1237 states. [2022-07-12 06:02:24,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1237 to 1056. [2022-07-12 06:02:24,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1056 states, 844 states have (on average 1.5936018957345972) internal successors, (1345), 851 states have internal predecessors, (1345), 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) [2022-07-12 06:02:24,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1056 states to 1056 states and 1754 transitions. [2022-07-12 06:02:24,617 INFO L78 Accepts]: Start accepts. Automaton has 1056 states and 1754 transitions. Word has length 109 [2022-07-12 06:02:24,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:02:24,618 INFO L495 AbstractCegarLoop]: Abstraction has 1056 states and 1754 transitions. [2022-07-12 06:02:24,618 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) [2022-07-12 06:02:24,618 INFO L276 IsEmpty]: Start isEmpty. Operand 1056 states and 1754 transitions. [2022-07-12 06:02:24,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-07-12 06:02:24,621 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:02:24,621 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] [2022-07-12 06:02:24,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-12 06:02:24,621 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:02:24,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:02:24,622 INFO L85 PathProgramCache]: Analyzing trace with hash -917634980, now seen corresponding path program 1 times [2022-07-12 06:02:24,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:02:24,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991213644] [2022-07-12 06:02:24,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:02:24,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:02:24,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:24,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:02:24,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:24,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 06:02:24,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:24,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 06:02:24,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:24,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:02:24,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:24,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 06:02:24,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:24,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 06:02:24,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:24,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-12 06:02:24,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:24,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 06:02:24,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:24,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-12 06:02:24,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:24,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-12 06:02:24,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:24,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-12 06:02:24,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:24,694 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-12 06:02:24,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:02:24,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991213644] [2022-07-12 06:02:24,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991213644] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:02:24,694 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:02:24,694 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 06:02:24,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882320955] [2022-07-12 06:02:24,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:02:24,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 06:02:24,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:02:24,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 06:02:24,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:02:24,695 INFO L87 Difference]: Start difference. First operand 1056 states and 1754 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) [2022-07-12 06:02:25,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:02:25,911 INFO L93 Difference]: Finished difference Result 2695 states and 4528 transitions. [2022-07-12 06:02:25,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 06:02:25,912 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 [2022-07-12 06:02:25,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:02:25,921 INFO L225 Difference]: With dead ends: 2695 [2022-07-12 06:02:25,921 INFO L226 Difference]: Without dead ends: 1770 [2022-07-12 06:02:25,925 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 [2022-07-12 06:02:25,926 INFO L413 NwaCegarLoop]: 624 mSDtfsCounter, 1105 mSDsluCounter, 676 mSDsCounter, 0 mSdLazyCounter, 1100 mSolverCounterSat, 492 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1120 SdHoareTripleChecker+Valid, 1300 SdHoareTripleChecker+Invalid, 1592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 492 IncrementalHoareTripleChecker+Valid, 1100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:02:25,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1120 Valid, 1300 Invalid, 1592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [492 Valid, 1100 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-12 06:02:25,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1770 states. [2022-07-12 06:02:26,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1770 to 1589. [2022-07-12 06:02:26,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1589 states, 1282 states have (on average 1.5998439937597504) internal successors, (2051), 1289 states have internal predecessors, (2051), 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) [2022-07-12 06:02:26,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1589 states to 1589 states and 2650 transitions. [2022-07-12 06:02:26,031 INFO L78 Accepts]: Start accepts. Automaton has 1589 states and 2650 transitions. Word has length 110 [2022-07-12 06:02:26,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:02:26,032 INFO L495 AbstractCegarLoop]: Abstraction has 1589 states and 2650 transitions. [2022-07-12 06:02:26,032 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) [2022-07-12 06:02:26,032 INFO L276 IsEmpty]: Start isEmpty. Operand 1589 states and 2650 transitions. [2022-07-12 06:02:26,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-12 06:02:26,038 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:02:26,038 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] [2022-07-12 06:02:26,038 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-12 06:02:26,038 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:02:26,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:02:26,038 INFO L85 PathProgramCache]: Analyzing trace with hash 742387317, now seen corresponding path program 1 times [2022-07-12 06:02:26,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:02:26,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331068992] [2022-07-12 06:02:26,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:02:26,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:02:26,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:26,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:02:26,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:26,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 06:02:26,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:26,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 06:02:26,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:26,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:02:26,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:26,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 06:02:26,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:26,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 06:02:26,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:26,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 06:02:26,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:26,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-12 06:02:26,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:26,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-12 06:02:26,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:26,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 06:02:26,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:26,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-12 06:02:26,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:26,118 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-12 06:02:26,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:02:26,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331068992] [2022-07-12 06:02:26,118 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331068992] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:02:26,118 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:02:26,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 06:02:26,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018134972] [2022-07-12 06:02:26,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:02:26,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 06:02:26,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:02:26,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 06:02:26,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:02:26,120 INFO L87 Difference]: Start difference. First operand 1589 states and 2650 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) [2022-07-12 06:02:27,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:02:27,336 INFO L93 Difference]: Finished difference Result 3902 states and 6614 transitions. [2022-07-12 06:02:27,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 06:02:27,337 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 [2022-07-12 06:02:27,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:02:27,347 INFO L225 Difference]: With dead ends: 3902 [2022-07-12 06:02:27,347 INFO L226 Difference]: Without dead ends: 2579 [2022-07-12 06:02:27,350 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 [2022-07-12 06:02:27,350 INFO L413 NwaCegarLoop]: 621 mSDtfsCounter, 1103 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 1098 mSolverCounterSat, 480 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1118 SdHoareTripleChecker+Valid, 1288 SdHoareTripleChecker+Invalid, 1578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 480 IncrementalHoareTripleChecker+Valid, 1098 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:02:27,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1118 Valid, 1288 Invalid, 1578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [480 Valid, 1098 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-12 06:02:27,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2579 states. [2022-07-12 06:02:27,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2579 to 2398. [2022-07-12 06:02:27,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2398 states, 1968 states have (on average 1.6046747967479675) internal successors, (3158), 1975 states have internal predecessors, (3158), 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) [2022-07-12 06:02:27,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2398 states to 2398 states and 4019 transitions. [2022-07-12 06:02:27,461 INFO L78 Accepts]: Start accepts. Automaton has 2398 states and 4019 transitions. Word has length 111 [2022-07-12 06:02:27,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:02:27,462 INFO L495 AbstractCegarLoop]: Abstraction has 2398 states and 4019 transitions. [2022-07-12 06:02:27,462 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) [2022-07-12 06:02:27,462 INFO L276 IsEmpty]: Start isEmpty. Operand 2398 states and 4019 transitions. [2022-07-12 06:02:27,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-12 06:02:27,467 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:02:27,467 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] [2022-07-12 06:02:27,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-12 06:02:27,467 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:02:27,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:02:27,468 INFO L85 PathProgramCache]: Analyzing trace with hash -46412003, now seen corresponding path program 1 times [2022-07-12 06:02:27,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:02:27,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262281366] [2022-07-12 06:02:27,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:02:27,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:02:27,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:27,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:02:27,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:27,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 06:02:27,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:27,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 06:02:27,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:27,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:02:27,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:27,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 06:02:27,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:27,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 06:02:27,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:27,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-12 06:02:27,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:27,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-12 06:02:27,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:27,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-12 06:02:27,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:27,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-12 06:02:27,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:27,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-12 06:02:27,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:27,553 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-12 06:02:27,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:02:27,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262281366] [2022-07-12 06:02:27,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262281366] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:02:27,553 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:02:27,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 06:02:27,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787198027] [2022-07-12 06:02:27,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:02:27,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 06:02:27,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:02:27,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 06:02:27,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:02:27,554 INFO L87 Difference]: Start difference. First operand 2398 states and 4019 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) [2022-07-12 06:02:28,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:02:28,794 INFO L93 Difference]: Finished difference Result 5786 states and 9874 transitions. [2022-07-12 06:02:28,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 06:02:28,794 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 [2022-07-12 06:02:28,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:02:28,815 INFO L225 Difference]: With dead ends: 5786 [2022-07-12 06:02:28,815 INFO L226 Difference]: Without dead ends: 3873 [2022-07-12 06:02:28,822 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 [2022-07-12 06:02:28,823 INFO L413 NwaCegarLoop]: 623 mSDtfsCounter, 1101 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 1105 mSolverCounterSat, 485 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1116 SdHoareTripleChecker+Valid, 1290 SdHoareTripleChecker+Invalid, 1590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 485 IncrementalHoareTripleChecker+Valid, 1105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:02:28,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1116 Valid, 1290 Invalid, 1590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [485 Valid, 1105 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-12 06:02:28,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3873 states. [2022-07-12 06:02:29,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3873 to 3692. [2022-07-12 06:02:29,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3692 states, 3083 states have (on average 1.6075251378527409) internal successors, (4956), 3090 states have internal predecessors, (4956), 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) [2022-07-12 06:02:29,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3692 states to 3692 states and 6201 transitions. [2022-07-12 06:02:29,130 INFO L78 Accepts]: Start accepts. Automaton has 3692 states and 6201 transitions. Word has length 112 [2022-07-12 06:02:29,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:02:29,130 INFO L495 AbstractCegarLoop]: Abstraction has 3692 states and 6201 transitions. [2022-07-12 06:02:29,130 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) [2022-07-12 06:02:29,131 INFO L276 IsEmpty]: Start isEmpty. Operand 3692 states and 6201 transitions. [2022-07-12 06:02:29,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-12 06:02:29,139 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:02:29,139 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] [2022-07-12 06:02:29,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-12 06:02:29,139 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:02:29,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:02:29,139 INFO L85 PathProgramCache]: Analyzing trace with hash 206437265, now seen corresponding path program 1 times [2022-07-12 06:02:29,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:02:29,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644196144] [2022-07-12 06:02:29,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:02:29,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:02:29,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:29,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:02:29,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:29,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 06:02:29,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:29,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 06:02:29,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:29,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:02:29,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:29,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 06:02:29,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:29,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 06:02:29,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:29,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 06:02:29,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:29,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 06:02:29,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:29,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-12 06:02:29,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:29,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-12 06:02:29,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:29,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-12 06:02:29,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:29,241 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-12 06:02:29,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:02:29,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644196144] [2022-07-12 06:02:29,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644196144] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:02:29,241 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:02:29,241 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 06:02:29,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854845029] [2022-07-12 06:02:29,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:02:29,241 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 06:02:29,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:02:29,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 06:02:29,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:02:29,242 INFO L87 Difference]: Start difference. First operand 3692 states and 6201 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) [2022-07-12 06:02:30,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:02:30,673 INFO L93 Difference]: Finished difference Result 8889 states and 15238 transitions. [2022-07-12 06:02:30,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 06:02:30,677 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 [2022-07-12 06:02:30,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:02:30,701 INFO L225 Difference]: With dead ends: 8889 [2022-07-12 06:02:30,701 INFO L226 Difference]: Without dead ends: 6014 [2022-07-12 06:02:30,709 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 [2022-07-12 06:02:30,709 INFO L413 NwaCegarLoop]: 631 mSDtfsCounter, 1099 mSDsluCounter, 675 mSDsCounter, 0 mSdLazyCounter, 1121 mSolverCounterSat, 488 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1114 SdHoareTripleChecker+Valid, 1306 SdHoareTripleChecker+Invalid, 1609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 488 IncrementalHoareTripleChecker+Valid, 1121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:02:30,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1114 Valid, 1306 Invalid, 1609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [488 Valid, 1121 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-12 06:02:30,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6014 states. [2022-07-12 06:02:31,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6014 to 5833. [2022-07-12 06:02:31,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5833 states, 4848 states have (on average 1.601072607260726) internal successors, (7762), 4855 states have internal predecessors, (7762), 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) [2022-07-12 06:02:31,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5833 states to 5833 states and 9803 transitions. [2022-07-12 06:02:31,092 INFO L78 Accepts]: Start accepts. Automaton has 5833 states and 9803 transitions. Word has length 113 [2022-07-12 06:02:31,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:02:31,093 INFO L495 AbstractCegarLoop]: Abstraction has 5833 states and 9803 transitions. [2022-07-12 06:02:31,093 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) [2022-07-12 06:02:31,093 INFO L276 IsEmpty]: Start isEmpty. Operand 5833 states and 9803 transitions. [2022-07-12 06:02:31,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-07-12 06:02:31,102 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:02:31,102 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] [2022-07-12 06:02:31,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-12 06:02:31,102 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:02:31,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:02:31,102 INFO L85 PathProgramCache]: Analyzing trace with hash 251785729, now seen corresponding path program 1 times [2022-07-12 06:02:31,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:02:31,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279177560] [2022-07-12 06:02:31,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:02:31,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:02:31,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:31,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:02:31,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:31,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 06:02:31,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:31,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 06:02:31,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:31,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:02:31,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:31,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 06:02:31,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:31,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 06:02:31,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:31,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-12 06:02:31,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:31,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 06:02:31,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:31,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-12 06:02:31,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:31,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-12 06:02:31,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:31,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-12 06:02:31,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:31,179 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-12 06:02:31,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:02:31,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279177560] [2022-07-12 06:02:31,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279177560] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:02:31,179 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:02:31,179 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 06:02:31,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575203030] [2022-07-12 06:02:31,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:02:31,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 06:02:31,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:02:31,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 06:02:31,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:02:31,190 INFO L87 Difference]: Start difference. First operand 5833 states and 9803 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) [2022-07-12 06:02:32,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:02:32,777 INFO L93 Difference]: Finished difference Result 14506 states and 24851 transitions. [2022-07-12 06:02:32,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 06:02:32,779 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 [2022-07-12 06:02:32,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:02:32,847 INFO L225 Difference]: With dead ends: 14506 [2022-07-12 06:02:32,847 INFO L226 Difference]: Without dead ends: 9892 [2022-07-12 06:02:32,860 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 [2022-07-12 06:02:32,860 INFO L413 NwaCegarLoop]: 624 mSDtfsCounter, 1097 mSDsluCounter, 672 mSDsCounter, 0 mSdLazyCounter, 1105 mSolverCounterSat, 493 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1112 SdHoareTripleChecker+Valid, 1296 SdHoareTripleChecker+Invalid, 1598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 493 IncrementalHoareTripleChecker+Valid, 1105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:02:32,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1112 Valid, 1296 Invalid, 1598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [493 Valid, 1105 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-12 06:02:32,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9892 states. [2022-07-12 06:02:33,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9892 to 9711. [2022-07-12 06:02:33,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9711 states, 8120 states have (on average 1.5986453201970443) internal successors, (12981), 8127 states have internal predecessors, (12981), 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) [2022-07-12 06:02:33,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9711 states to 9711 states and 16312 transitions. [2022-07-12 06:02:33,437 INFO L78 Accepts]: Start accepts. Automaton has 9711 states and 16312 transitions. Word has length 114 [2022-07-12 06:02:33,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:02:33,437 INFO L495 AbstractCegarLoop]: Abstraction has 9711 states and 16312 transitions. [2022-07-12 06:02:33,437 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) [2022-07-12 06:02:33,437 INFO L276 IsEmpty]: Start isEmpty. Operand 9711 states and 16312 transitions. [2022-07-12 06:02:33,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-07-12 06:02:33,447 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:02:33,447 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] [2022-07-12 06:02:33,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-12 06:02:33,448 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:02:33,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:02:33,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1783531999, now seen corresponding path program 1 times [2022-07-12 06:02:33,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:02:33,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347164123] [2022-07-12 06:02:33,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:02:33,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:02:33,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:33,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:02:33,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:33,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 06:02:33,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:33,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 06:02:33,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:33,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:02:33,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:33,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 06:02:33,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:33,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 06:02:33,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:33,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 06:02:33,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:33,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 06:02:33,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:33,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 06:02:33,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:33,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-12 06:02:33,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:33,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-12 06:02:33,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:33,511 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-12 06:02:33,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:02:33,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347164123] [2022-07-12 06:02:33,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347164123] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:02:33,511 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:02:33,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 06:02:33,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263136897] [2022-07-12 06:02:33,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:02:33,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 06:02:33,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:02:33,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 06:02:33,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:02:33,513 INFO L87 Difference]: Start difference. First operand 9711 states and 16312 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) [2022-07-12 06:02:35,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:02:35,448 INFO L93 Difference]: Finished difference Result 25215 states and 43132 transitions. [2022-07-12 06:02:35,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 06:02:35,449 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 [2022-07-12 06:02:35,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:02:35,509 INFO L225 Difference]: With dead ends: 25215 [2022-07-12 06:02:35,509 INFO L226 Difference]: Without dead ends: 17205 [2022-07-12 06:02:35,534 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 [2022-07-12 06:02:35,535 INFO L413 NwaCegarLoop]: 633 mSDtfsCounter, 1095 mSDsluCounter, 694 mSDsCounter, 0 mSdLazyCounter, 1124 mSolverCounterSat, 487 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1110 SdHoareTripleChecker+Valid, 1327 SdHoareTripleChecker+Invalid, 1611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 487 IncrementalHoareTripleChecker+Valid, 1124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-12 06:02:35,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1110 Valid, 1327 Invalid, 1611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [487 Valid, 1124 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-12 06:02:35,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17205 states. [2022-07-12 06:02:36,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17205 to 17024. [2022-07-12 06:02:36,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17024 states, 14230 states have (on average 1.5900913562895291) internal successors, (22627), 14237 states have internal predecessors, (22627), 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) [2022-07-12 06:02:36,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17024 states to 17024 states and 28508 transitions. [2022-07-12 06:02:36,535 INFO L78 Accepts]: Start accepts. Automaton has 17024 states and 28508 transitions. Word has length 115 [2022-07-12 06:02:36,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:02:36,536 INFO L495 AbstractCegarLoop]: Abstraction has 17024 states and 28508 transitions. [2022-07-12 06:02:36,536 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) [2022-07-12 06:02:36,536 INFO L276 IsEmpty]: Start isEmpty. Operand 17024 states and 28508 transitions. [2022-07-12 06:02:36,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-07-12 06:02:36,549 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:02:36,549 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] [2022-07-12 06:02:36,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-12 06:02:36,549 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:02:36,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:02:36,550 INFO L85 PathProgramCache]: Analyzing trace with hash -57282078, now seen corresponding path program 1 times [2022-07-12 06:02:36,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:02:36,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056679796] [2022-07-12 06:02:36,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:02:36,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:02:36,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:36,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:02:36,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:36,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 06:02:36,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:36,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 06:02:36,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:36,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:02:36,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:36,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 06:02:36,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:36,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 06:02:36,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:36,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-12 06:02:36,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:36,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-12 06:02:36,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:36,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-12 06:02:36,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:36,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-12 06:02:36,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:36,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-12 06:02:36,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:36,608 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-12 06:02:36,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:02:36,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056679796] [2022-07-12 06:02:36,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056679796] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:02:36,609 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:02:36,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 06:02:36,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275664433] [2022-07-12 06:02:36,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:02:36,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 06:02:36,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:02:36,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 06:02:36,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:02:36,610 INFO L87 Difference]: Start difference. First operand 17024 states and 28508 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) [2022-07-12 06:02:39,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:02:39,015 INFO L93 Difference]: Finished difference Result 45191 states and 77145 transitions. [2022-07-12 06:02:39,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 06:02:39,016 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 [2022-07-12 06:02:39,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:02:39,140 INFO L225 Difference]: With dead ends: 45191 [2022-07-12 06:02:39,140 INFO L226 Difference]: Without dead ends: 30545 [2022-07-12 06:02:39,187 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 [2022-07-12 06:02:39,188 INFO L413 NwaCegarLoop]: 625 mSDtfsCounter, 1093 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 1122 mSolverCounterSat, 483 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1108 SdHoareTripleChecker+Valid, 1293 SdHoareTripleChecker+Invalid, 1605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 483 IncrementalHoareTripleChecker+Valid, 1122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:02:39,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1108 Valid, 1293 Invalid, 1605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [483 Valid, 1122 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-12 06:02:39,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30545 states. [2022-07-12 06:02:41,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30545 to 30364. [2022-07-12 06:02:41,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30364 states, 25531 states have (on average 1.5859151619599703) internal successors, (40490), 25538 states have internal predecessors, (40490), 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) [2022-07-12 06:02:41,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30364 states to 30364 states and 50723 transitions. [2022-07-12 06:02:41,177 INFO L78 Accepts]: Start accepts. Automaton has 30364 states and 50723 transitions. Word has length 116 [2022-07-12 06:02:41,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:02:41,178 INFO L495 AbstractCegarLoop]: Abstraction has 30364 states and 50723 transitions. [2022-07-12 06:02:41,178 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) [2022-07-12 06:02:41,178 INFO L276 IsEmpty]: Start isEmpty. Operand 30364 states and 50723 transitions. [2022-07-12 06:02:41,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-07-12 06:02:41,194 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:02:41,194 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] [2022-07-12 06:02:41,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-12 06:02:41,194 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:02:41,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:02:41,195 INFO L85 PathProgramCache]: Analyzing trace with hash -1880355935, now seen corresponding path program 1 times [2022-07-12 06:02:41,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:02:41,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609697821] [2022-07-12 06:02:41,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:02:41,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:02:41,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:41,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:02:41,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:41,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 06:02:41,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:41,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 06:02:41,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:41,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:02:41,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:41,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 06:02:41,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:41,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 06:02:41,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:41,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-12 06:02:41,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:41,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-12 06:02:41,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:41,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-12 06:02:41,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:41,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-12 06:02:41,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:41,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-12 06:02:41,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:41,274 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-12 06:02:41,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:02:41,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609697821] [2022-07-12 06:02:41,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609697821] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:02:41,274 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:02:41,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 06:02:41,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655392759] [2022-07-12 06:02:41,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:02:41,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 06:02:41,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:02:41,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 06:02:41,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:02:41,277 INFO L87 Difference]: Start difference. First operand 30364 states and 50723 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) [2022-07-12 06:02:44,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:02:44,603 INFO L93 Difference]: Finished difference Result 82928 states and 140669 transitions. [2022-07-12 06:02:44,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 06:02:44,604 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 [2022-07-12 06:02:44,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:02:44,819 INFO L225 Difference]: With dead ends: 82928 [2022-07-12 06:02:44,819 INFO L226 Difference]: Without dead ends: 55754 [2022-07-12 06:02:44,883 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 [2022-07-12 06:02:44,884 INFO L413 NwaCegarLoop]: 625 mSDtfsCounter, 1091 mSDsluCounter, 676 mSDsCounter, 0 mSdLazyCounter, 1106 mSolverCounterSat, 492 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1106 SdHoareTripleChecker+Valid, 1301 SdHoareTripleChecker+Invalid, 1598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 492 IncrementalHoareTripleChecker+Valid, 1106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-12 06:02:44,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1106 Valid, 1301 Invalid, 1598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [492 Valid, 1106 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-12 06:02:44,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55754 states. [2022-07-12 06:02:47,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55754 to 55573. [2022-07-12 06:02:47,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55573 states, 47025 states have (on average 1.5804572036150983) internal successors, (74321), 47032 states have internal predecessors, (74321), 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) [2022-07-12 06:02:48,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55573 states to 55573 states and 92516 transitions. [2022-07-12 06:02:48,187 INFO L78 Accepts]: Start accepts. Automaton has 55573 states and 92516 transitions. Word has length 117 [2022-07-12 06:02:48,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:02:48,188 INFO L495 AbstractCegarLoop]: Abstraction has 55573 states and 92516 transitions. [2022-07-12 06:02:48,188 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) [2022-07-12 06:02:48,188 INFO L276 IsEmpty]: Start isEmpty. Operand 55573 states and 92516 transitions. [2022-07-12 06:02:48,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-07-12 06:02:48,204 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:02:48,205 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] [2022-07-12 06:02:48,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-12 06:02:48,205 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:02:48,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:02:48,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1764415454, now seen corresponding path program 1 times [2022-07-12 06:02:48,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:02:48,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574580353] [2022-07-12 06:02:48,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:02:48,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:02:48,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:48,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:02:48,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:48,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 06:02:48,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:48,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 06:02:48,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:48,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:02:48,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:48,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 06:02:48,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:48,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 06:02:48,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:48,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 06:02:48,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:48,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-12 06:02:48,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:48,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 06:02:48,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:48,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-12 06:02:48,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:48,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-12 06:02:48,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:48,290 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-12 06:02:48,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:02:48,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574580353] [2022-07-12 06:02:48,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574580353] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:02:48,291 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:02:48,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 06:02:48,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506795517] [2022-07-12 06:02:48,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:02:48,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 06:02:48,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:02:48,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 06:02:48,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-12 06:02:48,292 INFO L87 Difference]: Start difference. First operand 55573 states and 92516 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) [2022-07-12 06:02:53,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:02:53,450 INFO L93 Difference]: Finished difference Result 103984 states and 176655 transitions. [2022-07-12 06:02:53,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 06:02:53,451 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 [2022-07-12 06:02:53,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:02:53,957 INFO L225 Difference]: With dead ends: 103984 [2022-07-12 06:02:53,957 INFO L226 Difference]: Without dead ends: 103828 [2022-07-12 06:02:54,019 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 [2022-07-12 06:02:54,020 INFO L413 NwaCegarLoop]: 625 mSDtfsCounter, 1089 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 1118 mSolverCounterSat, 488 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1104 SdHoareTripleChecker+Valid, 1293 SdHoareTripleChecker+Invalid, 1606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 488 IncrementalHoareTripleChecker+Valid, 1118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-12 06:02:54,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1104 Valid, 1293 Invalid, 1606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [488 Valid, 1118 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-12 06:02:54,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103828 states. [2022-07-12 06:02:59,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103828 to 103647. [2022-07-12 06:02:59,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103647 states, 88300 states have (on average 1.5736353340883351) internal successors, (138952), 88307 states have internal predecessors, (138952), 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) [2022-07-12 06:02:59,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103647 states to 103647 states and 171791 transitions. [2022-07-12 06:02:59,743 INFO L78 Accepts]: Start accepts. Automaton has 103647 states and 171791 transitions. Word has length 118 [2022-07-12 06:02:59,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 06:02:59,743 INFO L495 AbstractCegarLoop]: Abstraction has 103647 states and 171791 transitions. [2022-07-12 06:02:59,743 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) [2022-07-12 06:02:59,744 INFO L276 IsEmpty]: Start isEmpty. Operand 103647 states and 171791 transitions. [2022-07-12 06:02:59,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-07-12 06:02:59,761 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 06:02:59,761 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] [2022-07-12 06:02:59,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-12 06:02:59,761 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION === [outgoingErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 06:02:59,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 06:02:59,762 INFO L85 PathProgramCache]: Analyzing trace with hash -223022272, now seen corresponding path program 1 times [2022-07-12 06:02:59,762 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 06:02:59,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [602366394] [2022-07-12 06:02:59,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 06:02:59,762 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 06:02:59,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:59,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 06:02:59,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:59,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-12 06:02:59,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:59,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-12 06:02:59,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:59,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 06:02:59,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:59,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 06:02:59,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:59,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 06:02:59,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:59,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 06:02:59,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:59,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-12 06:02:59,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:59,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-12 06:02:59,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:59,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-12 06:02:59,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:59,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-12 06:02:59,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 06:02:59,898 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-12 06:02:59,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 06:02:59,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [602366394] [2022-07-12 06:02:59,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [602366394] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 06:02:59,898 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 06:02:59,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-07-12 06:02:59,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696564708] [2022-07-12 06:02:59,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 06:02:59,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-12 06:02:59,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 06:02:59,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-12 06:02:59,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2022-07-12 06:02:59,900 INFO L87 Difference]: Start difference. First operand 103647 states and 171791 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) [2022-07-12 06:03:15,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 06:03:15,978 INFO L93 Difference]: Finished difference Result 207751 states and 356262 transitions. [2022-07-12 06:03:15,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-07-12 06:03:15,979 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 [2022-07-12 06:03:15,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 06:03:17,023 INFO L225 Difference]: With dead ends: 207751 [2022-07-12 06:03:17,024 INFO L226 Difference]: Without dead ends: 207601 [2022-07-12 06:03:17,107 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1272 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=822, Invalid=3600, Unknown=0, NotChecked=0, Total=4422 [2022-07-12 06:03:17,108 INFO L413 NwaCegarLoop]: 852 mSDtfsCounter, 4746 mSDsluCounter, 2504 mSDsCounter, 0 mSdLazyCounter, 11609 mSolverCounterSat, 3177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4746 SdHoareTripleChecker+Valid, 3356 SdHoareTripleChecker+Invalid, 14786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3177 IncrementalHoareTripleChecker+Valid, 11609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-07-12 06:03:17,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4746 Valid, 3356 Invalid, 14786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3177 Valid, 11609 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2022-07-12 06:03:17,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207601 states.