java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/product-lines/email_spec9_product33.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:18:12,337 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:18:12,340 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:18:12,359 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:18:12,360 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:18:12,361 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:18:12,363 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:18:12,372 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:18:12,376 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:18:12,381 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:18:12,382 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:18:12,384 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:18:12,384 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:18:12,386 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:18:12,389 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:18:12,390 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:18:12,392 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:18:12,392 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:18:12,394 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:18:12,399 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:18:12,404 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:18:12,407 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:18:12,411 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:18:12,412 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:18:12,414 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 01:18:12,415 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 01:18:12,415 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 01:18:12,417 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 01:18:12,418 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 01:18:12,419 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 01:18:12,419 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:18:12,421 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:18:12,422 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:18:12,423 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:18:12,424 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:18:12,425 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:18:12,425 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:18:12,426 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:18:12,426 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:18:12,426 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:18:12,428 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:18:12,429 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 01:18:12,463 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:18:12,464 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:18:12,465 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:18:12,468 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:18:12,469 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:18:12,469 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:18:12,469 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:18:12,469 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:18:12,469 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:18:12,470 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:18:12,470 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:18:12,470 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:18:12,470 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:18:12,470 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:18:12,471 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:18:12,471 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:18:12,471 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:18:12,472 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:18:12,472 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:18:12,472 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:18:12,472 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:18:12,473 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:18:12,473 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:18:12,473 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:18:12,473 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:18:12,473 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:18:12,474 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:18:12,474 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:18:12,474 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-15 01:18:12,761 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:18:12,775 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:18:12,779 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:18:12,781 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:18:12,781 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:18:12,782 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec9_product33.cil.c [2019-10-15 01:18:12,861 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f08d28a74/8d3c2ac6fffb4e819038f9f0962d4ea3/FLAGc52311be4 [2019-10-15 01:18:13,515 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:18:13,516 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec9_product33.cil.c [2019-10-15 01:18:13,547 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f08d28a74/8d3c2ac6fffb4e819038f9f0962d4ea3/FLAGc52311be4 [2019-10-15 01:18:13,747 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f08d28a74/8d3c2ac6fffb4e819038f9f0962d4ea3 [2019-10-15 01:18:13,756 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:18:13,757 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:18:13,758 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:18:13,758 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:18:13,762 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:18:13,763 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:18:13" (1/1) ... [2019-10-15 01:18:13,766 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d46bbee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:18:13, skipping insertion in model container [2019-10-15 01:18:13,767 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:18:13" (1/1) ... [2019-10-15 01:18:13,774 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:18:13,854 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:18:14,626 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:18:14,650 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:18:14,833 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:18:14,945 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:18:14,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:18:14 WrapperNode [2019-10-15 01:18:14,946 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:18:14,947 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:18:14,947 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:18:14,947 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:18:14,959 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:18:14" (1/1) ... [2019-10-15 01:18:14,959 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:18:14" (1/1) ... [2019-10-15 01:18:15,004 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:18:14" (1/1) ... [2019-10-15 01:18:15,004 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:18:14" (1/1) ... [2019-10-15 01:18:15,060 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:18:14" (1/1) ... [2019-10-15 01:18:15,085 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:18:14" (1/1) ... [2019-10-15 01:18:15,103 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:18:14" (1/1) ... [2019-10-15 01:18:15,143 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:18:15,144 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:18:15,144 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:18:15,144 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:18:15,149 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:18:14" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:18:15,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:18:15,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:18:15,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 01:18:15,228 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-15 01:18:15,228 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__AutoResponder [2019-10-15 01:18:15,229 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Forward [2019-10-15 01:18:15,229 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-15 01:18:15,230 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-10-15 01:18:15,230 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-15 01:18:15,231 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-15 01:18:15,231 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-15 01:18:15,231 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-15 01:18:15,231 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-15 01:18:15,232 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-15 01:18:15,233 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-15 01:18:15,233 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-15 01:18:15,235 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-15 01:18:15,235 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-15 01:18:15,235 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-15 01:18:15,236 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 01:18:15,236 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:18:15,236 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-15 01:18:15,236 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-15 01:18:15,236 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-15 01:18:15,237 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-15 01:18:15,237 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-15 01:18:15,237 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-15 01:18:15,237 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-15 01:18:15,237 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-15 01:18:15,237 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-15 01:18:15,238 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhSetAutoRespond [2019-10-15 01:18:15,238 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhEnableForwarding [2019-10-15 01:18:15,238 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 01:18:15,238 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptForward_spec__1 [2019-10-15 01:18:15,238 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptForward_spec__2 [2019-10-15 01:18:15,239 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-15 01:18:15,239 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-15 01:18:15,239 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-15 01:18:15,239 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-15 01:18:15,239 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-15 01:18:15,239 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-15 01:18:15,240 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-15 01:18:15,240 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-15 01:18:15,240 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-15 01:18:15,240 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-15 01:18:15,240 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-15 01:18:15,240 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-15 01:18:15,240 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-15 01:18:15,241 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-15 01:18:15,241 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-15 01:18:15,241 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-15 01:18:15,241 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-15 01:18:15,241 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-15 01:18:15,241 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-15 01:18:15,242 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-15 01:18:15,242 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-15 01:18:15,242 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 01:18:15,242 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 01:18:15,242 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 01:18:15,242 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 01:18:15,243 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 01:18:15,243 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 01:18:15,243 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 01:18:15,243 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-15 01:18:15,244 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-15 01:18:15,244 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-15 01:18:15,244 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2019-10-15 01:18:15,244 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-15 01:18:15,244 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-15 01:18:15,244 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Encrypt [2019-10-15 01:18:15,245 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-10-15 01:18:15,245 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Forward [2019-10-15 01:18:15,245 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Verify [2019-10-15 01:18:15,246 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-15 01:18:15,246 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-15 01:18:15,246 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-15 01:18:15,246 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-15 01:18:15,246 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-15 01:18:15,246 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-15 01:18:15,247 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-15 01:18:15,247 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-15 01:18:15,247 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-15 01:18:15,248 INFO L138 BoogieDeclarations]: Found implementation of procedure autoRespond [2019-10-15 01:18:15,248 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-10-15 01:18:15,248 INFO L138 BoogieDeclarations]: Found implementation of procedure forward [2019-10-15 01:18:15,249 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-10-15 01:18:15,249 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-15 01:18:15,250 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-15 01:18:15,250 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-15 01:18:15,250 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-15 01:18:15,250 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-15 01:18:15,251 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-15 01:18:15,251 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-15 01:18:15,251 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-15 01:18:15,251 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-15 01:18:15,251 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-15 01:18:15,251 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-15 01:18:15,252 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-15 01:18:15,252 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-15 01:18:15,252 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-15 01:18:15,252 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-15 01:18:15,252 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-15 01:18:15,252 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-15 01:18:15,252 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-15 01:18:15,253 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-15 01:18:15,253 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-15 01:18:15,253 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-15 01:18:15,253 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-15 01:18:15,253 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-15 01:18:15,253 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-15 01:18:15,253 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-15 01:18:15,254 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-15 01:18:15,254 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-15 01:18:15,254 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-15 01:18:15,254 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-15 01:18:15,254 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 01:18:15,254 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 01:18:15,255 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 01:18:15,255 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 01:18:15,255 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:18:15,256 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:18:15,256 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 01:18:15,256 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-15 01:18:15,256 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-15 01:18:15,258 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-15 01:18:15,258 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-15 01:18:15,258 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-15 01:18:15,258 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-15 01:18:15,258 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-15 01:18:15,258 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-15 01:18:15,258 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-15 01:18:15,259 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-15 01:18:15,259 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-15 01:18:15,259 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-15 01:18:15,259 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-15 01:18:15,260 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-15 01:18:15,260 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-15 01:18:15,264 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 01:18:15,264 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__AutoResponder [2019-10-15 01:18:15,264 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Forward [2019-10-15 01:18:15,265 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-10-15 01:18:15,265 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-15 01:18:15,265 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-15 01:18:15,266 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-15 01:18:15,271 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-15 01:18:15,272 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-15 01:18:15,272 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-15 01:18:15,272 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-15 01:18:15,273 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-15 01:18:15,274 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-15 01:18:15,274 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-15 01:18:15,274 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 01:18:15,274 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 01:18:15,275 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 01:18:15,275 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-15 01:18:15,275 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-15 01:18:15,275 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-15 01:18:15,275 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-15 01:18:15,275 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-15 01:18:15,276 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-15 01:18:15,276 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-15 01:18:15,276 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-15 01:18:15,276 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-15 01:18:15,276 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-15 01:18:15,276 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-15 01:18:15,277 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 01:18:15,277 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 01:18:15,277 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:18:15,277 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-15 01:18:15,277 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-15 01:18:15,277 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-15 01:18:15,278 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-15 01:18:15,278 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-15 01:18:15,278 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-15 01:18:15,278 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-15 01:18:15,278 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-15 01:18:15,279 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-15 01:18:15,279 INFO L130 BoogieDeclarations]: Found specification of procedure rjhSetAutoRespond [2019-10-15 01:18:15,279 INFO L130 BoogieDeclarations]: Found specification of procedure rjhEnableForwarding [2019-10-15 01:18:15,279 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-15 01:18:15,279 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-15 01:18:15,279 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-15 01:18:15,279 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 01:18:15,280 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptForward_spec__1 [2019-10-15 01:18:15,280 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptForward_spec__2 [2019-10-15 01:18:15,280 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-15 01:18:15,280 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-15 01:18:15,280 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-15 01:18:15,280 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-15 01:18:15,281 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-15 01:18:15,281 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-15 01:18:15,281 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-15 01:18:15,281 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-15 01:18:15,281 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-15 01:18:15,281 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-15 01:18:15,282 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-15 01:18:15,282 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 01:18:15,282 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 01:18:15,282 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 01:18:15,282 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 01:18:15,283 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 01:18:15,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 01:18:15,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 01:18:15,283 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 01:18:15,283 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 01:18:15,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 01:18:15,284 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 01:18:15,284 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 01:18:15,284 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 01:18:15,284 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 01:18:15,284 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 01:18:15,284 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 01:18:15,285 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-15 01:18:15,285 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-15 01:18:15,285 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-15 01:18:15,285 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-15 01:18:15,285 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-15 01:18:15,285 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-15 01:18:15,286 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-15 01:18:15,286 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-15 01:18:15,286 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-15 01:18:15,286 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-15 01:18:15,286 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-15 01:18:15,286 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-15 01:18:15,286 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-15 01:18:15,287 INFO L130 BoogieDeclarations]: Found specification of procedure autoRespond [2019-10-15 01:18:15,287 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-10-15 01:18:15,287 INFO L130 BoogieDeclarations]: Found specification of procedure forward [2019-10-15 01:18:15,287 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-10-15 01:18:15,287 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-15 01:18:15,287 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2019-10-15 01:18:15,288 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Encrypt [2019-10-15 01:18:15,288 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-10-15 01:18:15,288 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Forward [2019-10-15 01:18:15,288 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Verify [2019-10-15 01:18:15,288 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-15 01:18:15,288 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-15 01:18:15,289 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-15 01:18:15,289 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-15 01:18:15,289 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-15 01:18:15,289 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-15 01:18:15,289 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-15 01:18:15,289 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-15 01:18:15,290 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-15 01:18:15,290 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-15 01:18:15,290 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-15 01:18:15,290 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-15 01:18:15,290 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-15 01:18:15,290 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-15 01:18:15,291 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 01:18:15,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:18:15,291 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 01:18:15,291 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:18:17,630 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:18:17,631 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-15 01:18:17,633 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:18:17 BoogieIcfgContainer [2019-10-15 01:18:17,633 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:18:17,636 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:18:17,636 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:18:17,640 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:18:17,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:18:13" (1/3) ... [2019-10-15 01:18:17,641 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77f8994b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:18:17, skipping insertion in model container [2019-10-15 01:18:17,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:18:14" (2/3) ... [2019-10-15 01:18:17,643 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77f8994b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:18:17, skipping insertion in model container [2019-10-15 01:18:17,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:18:17" (3/3) ... [2019-10-15 01:18:17,649 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec9_product33.cil.c [2019-10-15 01:18:17,660 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:18:17,675 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:18:17,690 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:18:17,744 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:18:17,744 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:18:17,744 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:18:17,747 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:18:17,747 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:18:17,747 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:18:17,747 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:18:17,747 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:18:17,789 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states. [2019-10-15 01:18:17,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2019-10-15 01:18:17,816 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:18:17,818 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:18:17,820 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:18:17,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:18:17,826 INFO L82 PathProgramCache]: Analyzing trace with hash -1835133867, now seen corresponding path program 1 times [2019-10-15 01:18:17,836 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:18:17,837 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244459678] [2019-10-15 01:18:17,837 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:17,837 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:17,838 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:18:18,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:18:18,513 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-15 01:18:18,514 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244459678] [2019-10-15 01:18:18,515 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:18:18,515 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 01:18:18,516 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962858750] [2019-10-15 01:18:18,522 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 01:18:18,524 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:18:18,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 01:18:18,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:18:18,542 INFO L87 Difference]: Start difference. First operand 594 states. Second operand 2 states. [2019-10-15 01:18:18,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:18:18,626 INFO L93 Difference]: Finished difference Result 919 states and 1204 transitions. [2019-10-15 01:18:18,626 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 01:18:18,627 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 158 [2019-10-15 01:18:18,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:18:18,660 INFO L225 Difference]: With dead ends: 919 [2019-10-15 01:18:18,661 INFO L226 Difference]: Without dead ends: 571 [2019-10-15 01:18:18,674 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:18:18,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2019-10-15 01:18:18,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 571. [2019-10-15 01:18:18,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2019-10-15 01:18:18,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 753 transitions. [2019-10-15 01:18:18,812 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 753 transitions. Word has length 158 [2019-10-15 01:18:18,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:18:18,814 INFO L462 AbstractCegarLoop]: Abstraction has 571 states and 753 transitions. [2019-10-15 01:18:18,814 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 01:18:18,815 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 753 transitions. [2019-10-15 01:18:18,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2019-10-15 01:18:18,820 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:18:18,820 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:18:18,821 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:18:18,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:18:18,821 INFO L82 PathProgramCache]: Analyzing trace with hash 582297796, now seen corresponding path program 1 times [2019-10-15 01:18:18,821 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:18:18,822 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201816241] [2019-10-15 01:18:18,822 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:18,822 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:18,822 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:18:18,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:18:19,079 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-15 01:18:19,080 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201816241] [2019-10-15 01:18:19,080 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:18:19,081 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:18:19,081 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249260492] [2019-10-15 01:18:19,088 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:18:19,089 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:18:19,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:18:19,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:18:19,089 INFO L87 Difference]: Start difference. First operand 571 states and 753 transitions. Second operand 3 states. [2019-10-15 01:18:19,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:18:19,188 INFO L93 Difference]: Finished difference Result 902 states and 1172 transitions. [2019-10-15 01:18:19,188 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:18:19,188 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 159 [2019-10-15 01:18:19,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:18:19,198 INFO L225 Difference]: With dead ends: 902 [2019-10-15 01:18:19,198 INFO L226 Difference]: Without dead ends: 574 [2019-10-15 01:18:19,202 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:18:19,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2019-10-15 01:18:19,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 573. [2019-10-15 01:18:19,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 573 states. [2019-10-15 01:18:19,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 755 transitions. [2019-10-15 01:18:19,248 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 755 transitions. Word has length 159 [2019-10-15 01:18:19,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:18:19,248 INFO L462 AbstractCegarLoop]: Abstraction has 573 states and 755 transitions. [2019-10-15 01:18:19,249 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:18:19,249 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 755 transitions. [2019-10-15 01:18:19,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2019-10-15 01:18:19,253 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:18:19,253 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:18:19,253 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:18:19,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:18:19,254 INFO L82 PathProgramCache]: Analyzing trace with hash -2046510219, now seen corresponding path program 1 times [2019-10-15 01:18:19,254 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:18:19,254 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391037423] [2019-10-15 01:18:19,254 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:19,254 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:19,255 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:18:19,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:18:19,476 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-15 01:18:19,476 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391037423] [2019-10-15 01:18:19,477 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:18:19,477 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:18:19,477 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578038391] [2019-10-15 01:18:19,479 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:18:19,482 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:18:19,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:18:19,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:18:19,483 INFO L87 Difference]: Start difference. First operand 573 states and 755 transitions. Second operand 3 states. [2019-10-15 01:18:19,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:18:19,536 INFO L93 Difference]: Finished difference Result 1124 states and 1511 transitions. [2019-10-15 01:18:19,536 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:18:19,537 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 171 [2019-10-15 01:18:19,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:18:19,549 INFO L225 Difference]: With dead ends: 1124 [2019-10-15 01:18:19,550 INFO L226 Difference]: Without dead ends: 616 [2019-10-15 01:18:19,553 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:18:19,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2019-10-15 01:18:19,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 615. [2019-10-15 01:18:19,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 615 states. [2019-10-15 01:18:19,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 827 transitions. [2019-10-15 01:18:19,610 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 827 transitions. Word has length 171 [2019-10-15 01:18:19,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:18:19,611 INFO L462 AbstractCegarLoop]: Abstraction has 615 states and 827 transitions. [2019-10-15 01:18:19,612 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:18:19,612 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 827 transitions. [2019-10-15 01:18:19,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2019-10-15 01:18:19,622 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:18:19,622 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:18:19,623 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:18:19,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:18:19,624 INFO L82 PathProgramCache]: Analyzing trace with hash -866341980, now seen corresponding path program 1 times [2019-10-15 01:18:19,625 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:18:19,625 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335203979] [2019-10-15 01:18:19,625 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:19,626 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:19,626 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:18:19,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:18:19,961 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-15 01:18:19,961 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335203979] [2019-10-15 01:18:19,962 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:18:19,962 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:18:19,963 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182463874] [2019-10-15 01:18:19,963 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:18:19,964 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:18:19,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:18:19,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:18:19,965 INFO L87 Difference]: Start difference. First operand 615 states and 827 transitions. Second operand 3 states. [2019-10-15 01:18:20,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:18:20,026 INFO L93 Difference]: Finished difference Result 1247 states and 1722 transitions. [2019-10-15 01:18:20,026 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:18:20,027 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 172 [2019-10-15 01:18:20,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:18:20,034 INFO L225 Difference]: With dead ends: 1247 [2019-10-15 01:18:20,035 INFO L226 Difference]: Without dead ends: 697 [2019-10-15 01:18:20,038 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:18:20,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2019-10-15 01:18:20,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 696. [2019-10-15 01:18:20,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 696 states. [2019-10-15 01:18:20,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 965 transitions. [2019-10-15 01:18:20,084 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 965 transitions. Word has length 172 [2019-10-15 01:18:20,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:18:20,085 INFO L462 AbstractCegarLoop]: Abstraction has 696 states and 965 transitions. [2019-10-15 01:18:20,085 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:18:20,085 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 965 transitions. [2019-10-15 01:18:20,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2019-10-15 01:18:20,093 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:18:20,094 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:18:20,094 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:18:20,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:18:20,095 INFO L82 PathProgramCache]: Analyzing trace with hash 1566529269, now seen corresponding path program 1 times [2019-10-15 01:18:20,095 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:18:20,096 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42997107] [2019-10-15 01:18:20,097 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:20,097 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:20,097 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:18:20,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:18:20,349 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-15 01:18:20,350 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42997107] [2019-10-15 01:18:20,350 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:18:20,350 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:18:20,351 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441562785] [2019-10-15 01:18:20,351 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:18:20,352 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:18:20,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:18:20,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:18:20,353 INFO L87 Difference]: Start difference. First operand 696 states and 965 transitions. Second operand 3 states. [2019-10-15 01:18:20,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:18:20,402 INFO L93 Difference]: Finished difference Result 1484 states and 2126 transitions. [2019-10-15 01:18:20,403 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:18:20,403 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 173 [2019-10-15 01:18:20,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:18:20,409 INFO L225 Difference]: With dead ends: 1484 [2019-10-15 01:18:20,409 INFO L226 Difference]: Without dead ends: 853 [2019-10-15 01:18:20,411 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:18:20,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 853 states. [2019-10-15 01:18:20,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 853 to 852. [2019-10-15 01:18:20,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 852 states. [2019-10-15 01:18:20,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 1229 transitions. [2019-10-15 01:18:20,449 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 1229 transitions. Word has length 173 [2019-10-15 01:18:20,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:18:20,450 INFO L462 AbstractCegarLoop]: Abstraction has 852 states and 1229 transitions. [2019-10-15 01:18:20,450 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:18:20,450 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 1229 transitions. [2019-10-15 01:18:20,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2019-10-15 01:18:20,455 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:18:20,456 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:18:20,456 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:18:20,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:18:20,456 INFO L82 PathProgramCache]: Analyzing trace with hash 1766682355, now seen corresponding path program 1 times [2019-10-15 01:18:20,457 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:18:20,457 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100473804] [2019-10-15 01:18:20,457 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:20,457 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:20,457 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:18:20,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:18:20,713 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-15 01:18:20,713 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100473804] [2019-10-15 01:18:20,714 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:18:20,715 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:18:20,715 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102326191] [2019-10-15 01:18:20,715 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:18:20,716 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:18:20,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:18:20,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:18:20,716 INFO L87 Difference]: Start difference. First operand 852 states and 1229 transitions. Second operand 3 states. [2019-10-15 01:18:20,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:18:20,770 INFO L93 Difference]: Finished difference Result 1271 states and 1777 transitions. [2019-10-15 01:18:20,771 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:18:20,771 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 175 [2019-10-15 01:18:20,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:18:20,779 INFO L225 Difference]: With dead ends: 1271 [2019-10-15 01:18:20,779 INFO L226 Difference]: Without dead ends: 945 [2019-10-15 01:18:20,781 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:18:20,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 945 states. [2019-10-15 01:18:20,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 945 to 945. [2019-10-15 01:18:20,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 945 states. [2019-10-15 01:18:20,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 945 states to 945 states and 1352 transitions. [2019-10-15 01:18:20,846 INFO L78 Accepts]: Start accepts. Automaton has 945 states and 1352 transitions. Word has length 175 [2019-10-15 01:18:20,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:18:20,847 INFO L462 AbstractCegarLoop]: Abstraction has 945 states and 1352 transitions. [2019-10-15 01:18:20,847 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:18:20,847 INFO L276 IsEmpty]: Start isEmpty. Operand 945 states and 1352 transitions. [2019-10-15 01:18:20,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2019-10-15 01:18:20,859 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:18:20,860 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:18:20,860 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:18:20,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:18:20,860 INFO L82 PathProgramCache]: Analyzing trace with hash 2119106243, now seen corresponding path program 1 times [2019-10-15 01:18:20,861 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:18:20,861 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456926754] [2019-10-15 01:18:20,861 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:20,861 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:20,862 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:18:20,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:18:21,544 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 22 proven. 11 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2019-10-15 01:18:21,545 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456926754] [2019-10-15 01:18:21,545 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [458339955] [2019-10-15 01:18:21,545 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:18:22,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:18:22,383 INFO L256 TraceCheckSpWp]: Trace formula consists of 3614 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:18:22,421 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:18:22,843 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2019-10-15 01:18:22,843 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:18:23,684 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:18:23,782 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:18:23,889 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:18:24,112 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 22 proven. 3 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2019-10-15 01:18:24,113 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:18:24,113 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [22, 9] total 35 [2019-10-15 01:18:24,114 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677302050] [2019-10-15 01:18:24,114 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 01:18:24,115 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:18:24,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 01:18:24,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1100, Unknown=0, NotChecked=0, Total=1190 [2019-10-15 01:18:24,117 INFO L87 Difference]: Start difference. First operand 945 states and 1352 transitions. Second operand 9 states. [2019-10-15 01:18:26,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:18:26,696 INFO L93 Difference]: Finished difference Result 1868 states and 2684 transitions. [2019-10-15 01:18:26,696 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-15 01:18:26,696 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 329 [2019-10-15 01:18:26,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:18:26,702 INFO L225 Difference]: With dead ends: 1868 [2019-10-15 01:18:26,703 INFO L226 Difference]: Without dead ends: 959 [2019-10-15 01:18:26,709 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 687 GetRequests, 647 SyntacticMatches, 4 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=111, Invalid=1295, Unknown=0, NotChecked=0, Total=1406 [2019-10-15 01:18:26,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2019-10-15 01:18:26,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 959. [2019-10-15 01:18:26,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 959 states. [2019-10-15 01:18:26,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 1370 transitions. [2019-10-15 01:18:26,768 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 1370 transitions. Word has length 329 [2019-10-15 01:18:26,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:18:26,768 INFO L462 AbstractCegarLoop]: Abstraction has 959 states and 1370 transitions. [2019-10-15 01:18:26,768 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-15 01:18:26,768 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 1370 transitions. [2019-10-15 01:18:26,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2019-10-15 01:18:26,777 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:18:26,777 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:18:26,987 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:18:26,987 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:18:26,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:18:26,988 INFO L82 PathProgramCache]: Analyzing trace with hash -1026090373, now seen corresponding path program 1 times [2019-10-15 01:18:26,988 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:18:26,988 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210345592] [2019-10-15 01:18:26,988 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:26,989 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:26,989 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:18:27,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:18:27,868 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 22 proven. 11 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2019-10-15 01:18:27,869 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210345592] [2019-10-15 01:18:27,869 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1971553044] [2019-10-15 01:18:27,869 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:18:28,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:18:28,741 INFO L256 TraceCheckSpWp]: Trace formula consists of 3615 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 01:18:28,762 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:18:29,034 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2019-10-15 01:18:29,035 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:18:29,635 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:18:29,714 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:18:29,814 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 22 proven. 3 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2019-10-15 01:18:29,815 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:18:29,815 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [22, 7] total 31 [2019-10-15 01:18:29,815 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345792379] [2019-10-15 01:18:29,816 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:18:29,817 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:18:29,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:18:29,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=854, Unknown=0, NotChecked=0, Total=930 [2019-10-15 01:18:29,818 INFO L87 Difference]: Start difference. First operand 959 states and 1370 transitions. Second operand 7 states. [2019-10-15 01:18:31,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:18:31,011 INFO L93 Difference]: Finished difference Result 1869 states and 2690 transitions. [2019-10-15 01:18:31,011 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:18:31,011 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 330 [2019-10-15 01:18:31,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:18:31,019 INFO L225 Difference]: With dead ends: 1869 [2019-10-15 01:18:31,019 INFO L226 Difference]: Without dead ends: 961 [2019-10-15 01:18:31,023 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 688 GetRequests, 654 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=90, Invalid=966, Unknown=0, NotChecked=0, Total=1056 [2019-10-15 01:18:31,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 961 states. [2019-10-15 01:18:31,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 961 to 961. [2019-10-15 01:18:31,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 961 states. [2019-10-15 01:18:31,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 961 states to 961 states and 1373 transitions. [2019-10-15 01:18:31,070 INFO L78 Accepts]: Start accepts. Automaton has 961 states and 1373 transitions. Word has length 330 [2019-10-15 01:18:31,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:18:31,070 INFO L462 AbstractCegarLoop]: Abstraction has 961 states and 1373 transitions. [2019-10-15 01:18:31,070 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:18:31,071 INFO L276 IsEmpty]: Start isEmpty. Operand 961 states and 1373 transitions. [2019-10-15 01:18:31,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2019-10-15 01:18:31,079 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:18:31,079 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:18:31,288 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:18:31,288 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:18:31,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:18:31,288 INFO L82 PathProgramCache]: Analyzing trace with hash -1454852471, now seen corresponding path program 1 times [2019-10-15 01:18:31,289 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:18:31,289 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984993024] [2019-10-15 01:18:31,289 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:31,290 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:31,290 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:18:31,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:18:31,841 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 22 proven. 11 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2019-10-15 01:18:31,841 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984993024] [2019-10-15 01:18:31,842 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819199136] [2019-10-15 01:18:31,842 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:18:32,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:18:32,979 INFO L256 TraceCheckSpWp]: Trace formula consists of 3616 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:18:32,990 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:18:33,280 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-10-15 01:18:33,280 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:18:33,937 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:18:34,022 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:18:34,110 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:18:34,359 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2019-10-15 01:18:34,359 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:18:34,360 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [22] total 36 [2019-10-15 01:18:34,360 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223270136] [2019-10-15 01:18:34,361 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-15 01:18:34,362 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:18:34,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-15 01:18:34,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=1161, Unknown=0, NotChecked=0, Total=1260 [2019-10-15 01:18:34,363 INFO L87 Difference]: Start difference. First operand 961 states and 1373 transitions. Second operand 16 states. [2019-10-15 01:18:36,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:18:36,901 INFO L93 Difference]: Finished difference Result 1873 states and 2688 transitions. [2019-10-15 01:18:36,901 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-15 01:18:36,902 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 331 [2019-10-15 01:18:36,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:18:36,908 INFO L225 Difference]: With dead ends: 1873 [2019-10-15 01:18:36,908 INFO L226 Difference]: Without dead ends: 973 [2019-10-15 01:18:36,912 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 692 GetRequests, 651 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=131, Invalid=1429, Unknown=0, NotChecked=0, Total=1560 [2019-10-15 01:18:36,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 973 states. [2019-10-15 01:18:36,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 973 to 971. [2019-10-15 01:18:36,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 971 states. [2019-10-15 01:18:36,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1384 transitions. [2019-10-15 01:18:36,951 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1384 transitions. Word has length 331 [2019-10-15 01:18:36,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:18:36,952 INFO L462 AbstractCegarLoop]: Abstraction has 971 states and 1384 transitions. [2019-10-15 01:18:36,952 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-15 01:18:36,952 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1384 transitions. [2019-10-15 01:18:36,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2019-10-15 01:18:36,957 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:18:36,958 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:18:37,166 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:18:37,167 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:18:37,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:18:37,168 INFO L82 PathProgramCache]: Analyzing trace with hash 5895967, now seen corresponding path program 2 times [2019-10-15 01:18:37,169 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:18:37,169 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118173203] [2019-10-15 01:18:37,169 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:37,169 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:37,170 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:18:37,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:18:37,828 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 22 proven. 11 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2019-10-15 01:18:37,829 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118173203] [2019-10-15 01:18:37,829 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1595869610] [2019-10-15 01:18:37,829 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:18:38,600 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-10-15 01:18:38,600 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-15 01:18:38,613 INFO L256 TraceCheckSpWp]: Trace formula consists of 2519 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 01:18:38,623 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:18:38,880 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-10-15 01:18:38,880 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:18:39,602 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:18:39,676 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:18:39,766 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2019-10-15 01:18:39,766 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:18:39,766 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [22] total 32 [2019-10-15 01:18:39,767 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399207075] [2019-10-15 01:18:39,768 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-15 01:18:39,768 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:18:39,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-15 01:18:39,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=909, Unknown=0, NotChecked=0, Total=992 [2019-10-15 01:18:39,769 INFO L87 Difference]: Start difference. First operand 971 states and 1384 transitions. Second operand 12 states. [2019-10-15 01:18:41,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:18:41,351 INFO L93 Difference]: Finished difference Result 1864 states and 2676 transitions. [2019-10-15 01:18:41,352 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 01:18:41,352 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 332 [2019-10-15 01:18:41,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:18:41,358 INFO L225 Difference]: With dead ends: 1864 [2019-10-15 01:18:41,358 INFO L226 Difference]: Without dead ends: 973 [2019-10-15 01:18:41,362 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 693 GetRequests, 658 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=105, Invalid=1085, Unknown=0, NotChecked=0, Total=1190 [2019-10-15 01:18:41,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 973 states. [2019-10-15 01:18:41,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 973 to 971. [2019-10-15 01:18:41,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 971 states. [2019-10-15 01:18:41,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1383 transitions. [2019-10-15 01:18:41,406 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1383 transitions. Word has length 332 [2019-10-15 01:18:41,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:18:41,406 INFO L462 AbstractCegarLoop]: Abstraction has 971 states and 1383 transitions. [2019-10-15 01:18:41,407 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-15 01:18:41,407 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1383 transitions. [2019-10-15 01:18:41,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2019-10-15 01:18:41,412 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:18:41,413 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:18:41,624 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:18:41,624 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:18:41,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:18:41,624 INFO L82 PathProgramCache]: Analyzing trace with hash 1925563471, now seen corresponding path program 3 times [2019-10-15 01:18:41,625 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:18:41,625 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196399805] [2019-10-15 01:18:41,625 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:41,625 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:41,625 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:18:41,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:18:42,223 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 22 proven. 11 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2019-10-15 01:18:42,223 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196399805] [2019-10-15 01:18:42,223 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1038695965] [2019-10-15 01:18:42,224 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:18:42,994 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-15 01:18:42,995 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-15 01:18:43,002 INFO L256 TraceCheckSpWp]: Trace formula consists of 2936 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:18:43,011 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:18:43,253 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-10-15 01:18:43,253 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:18:44,077 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:18:44,182 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:18:44,287 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:18:44,535 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2019-10-15 01:18:44,535 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:18:44,536 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [22] total 35 [2019-10-15 01:18:44,536 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350428911] [2019-10-15 01:18:44,537 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-15 01:18:44,537 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:18:44,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-15 01:18:44,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1100, Unknown=0, NotChecked=0, Total=1190 [2019-10-15 01:18:44,538 INFO L87 Difference]: Start difference. First operand 971 states and 1383 transitions. Second operand 15 states. [2019-10-15 01:18:46,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:18:46,664 INFO L93 Difference]: Finished difference Result 1871 states and 2683 transitions. [2019-10-15 01:18:46,664 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-15 01:18:46,664 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 333 [2019-10-15 01:18:46,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:18:46,671 INFO L225 Difference]: With dead ends: 1871 [2019-10-15 01:18:46,671 INFO L226 Difference]: Without dead ends: 975 [2019-10-15 01:18:46,675 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 696 GetRequests, 655 SyntacticMatches, 4 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=119, Invalid=1363, Unknown=0, NotChecked=0, Total=1482 [2019-10-15 01:18:46,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states.