/usr/bin/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_spec27_product32.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 00:49:51,596 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 00:49:51,598 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 00:49:51,610 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 00:49:51,610 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 00:49:51,611 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 00:49:51,613 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 00:49:51,615 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 00:49:51,616 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 00:49:51,617 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 00:49:51,618 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 00:49:51,619 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 00:49:51,619 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 00:49:51,620 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 00:49:51,621 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 00:49:51,622 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 00:49:51,623 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 00:49:51,624 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 00:49:51,626 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 00:49:51,628 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 00:49:51,630 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 00:49:51,631 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 00:49:51,632 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 00:49:51,633 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 00:49:51,636 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 00:49:51,636 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 00:49:51,636 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 00:49:51,637 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 00:49:51,641 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 00:49:51,642 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 00:49:51,642 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 00:49:51,643 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 00:49:51,644 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 00:49:51,645 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 00:49:51,646 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 00:49:51,646 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 00:49:51,650 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 00:49:51,651 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 00:49:51,651 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 00:49:51,654 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 00:49:51,655 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 00:49:51,656 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 [2019-11-07 00:49:51,681 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 00:49:51,682 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 00:49:51,685 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 00:49:51,685 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 00:49:51,685 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 00:49:51,686 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 00:49:51,686 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 00:49:51,686 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 00:49:51,686 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 00:49:51,686 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 00:49:51,688 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 00:49:51,688 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 00:49:51,688 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 00:49:51,688 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 00:49:51,689 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 00:49:51,689 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 00:49:51,689 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 00:49:51,689 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 00:49:51,690 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 00:49:51,690 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 00:49:51,690 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 00:49:51,690 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:49:51,691 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 00:49:51,691 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 00:49:51,691 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 00:49:51,692 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 00:49:51,692 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 00:49:51,692 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 00:49:51,692 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 [2019-11-07 00:49:52,013 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 00:49:52,035 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 00:49:52,039 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 00:49:52,040 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 00:49:52,041 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 00:49:52,042 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec27_product32.cil.c [2019-11-07 00:49:52,120 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b67a8577/48feab48457640cbad240902400eb5e4/FLAGbb375c971 [2019-11-07 00:49:52,676 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 00:49:52,677 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec27_product32.cil.c [2019-11-07 00:49:52,710 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b67a8577/48feab48457640cbad240902400eb5e4/FLAGbb375c971 [2019-11-07 00:49:52,918 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b67a8577/48feab48457640cbad240902400eb5e4 [2019-11-07 00:49:52,930 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 00:49:52,938 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 00:49:52,949 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 00:49:52,950 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 00:49:52,957 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 00:49:52,962 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:49:52" (1/1) ... [2019-11-07 00:49:52,968 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b0eb4f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:49:52, skipping insertion in model container [2019-11-07 00:49:52,968 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:49:52" (1/1) ... [2019-11-07 00:49:52,990 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 00:49:53,152 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 00:49:53,879 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:49:53,919 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 00:49:54,099 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:49:54,193 INFO L192 MainTranslator]: Completed translation [2019-11-07 00:49:54,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:49:54 WrapperNode [2019-11-07 00:49:54,194 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 00:49:54,195 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 00:49:54,195 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 00:49:54,196 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 00:49:54,210 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:49:54" (1/1) ... [2019-11-07 00:49:54,211 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:49:54" (1/1) ... [2019-11-07 00:49:54,258 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:49:54" (1/1) ... [2019-11-07 00:49:54,259 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:49:54" (1/1) ... [2019-11-07 00:49:54,342 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:49:54" (1/1) ... [2019-11-07 00:49:54,380 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:49:54" (1/1) ... [2019-11-07 00:49:54,409 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:49:54" (1/1) ... [2019-11-07 00:49:54,443 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 00:49:54,445 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 00:49:54,445 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 00:49:54,445 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 00:49:54,447 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:49:54" (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 [2019-11-07 00:49:54,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 00:49:54,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 00:49:54,539 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 00:49:54,540 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-11-07 00:49:54,540 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-11-07 00:49:54,540 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-11-07 00:49:54,540 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-11-07 00:49:54,540 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-11-07 00:49:54,541 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-11-07 00:49:54,541 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-11-07 00:49:54,541 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-11-07 00:49:54,541 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-11-07 00:49:54,541 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-11-07 00:49:54,542 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-11-07 00:49:54,542 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-11-07 00:49:54,542 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-11-07 00:49:54,542 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-11-07 00:49:54,542 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-11-07 00:49:54,543 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-11-07 00:49:54,543 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-11-07 00:49:54,544 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-11-07 00:49:54,544 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-11-07 00:49:54,544 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-11-07 00:49:54,544 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-11-07 00:49:54,544 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-11-07 00:49:54,544 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-11-07 00:49:54,545 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-11-07 00:49:54,545 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-11-07 00:49:54,545 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-11-07 00:49:54,545 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-11-07 00:49:54,545 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-11-07 00:49:54,545 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-11-07 00:49:54,545 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__VerifyForward_spec__1 [2019-11-07 00:49:54,546 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 00:49:54,546 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-11-07 00:49:54,546 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 00:49:54,546 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 00:49:54,546 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 00:49:54,547 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 00:49:54,547 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 00:49:54,547 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 00:49:54,547 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-11-07 00:49:54,548 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-11-07 00:49:54,548 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-11-07 00:49:54,548 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-11-07 00:49:54,548 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-11-07 00:49:54,549 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-11-07 00:49:54,549 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-11-07 00:49:54,549 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-11-07 00:49:54,549 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 00:49:54,549 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 00:49:54,550 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-11-07 00:49:54,550 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-11-07 00:49:54,550 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-11-07 00:49:54,550 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-11-07 00:49:54,551 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-11-07 00:49:54,551 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-11-07 00:49:54,551 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-11-07 00:49:54,551 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-11-07 00:49:54,551 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-11-07 00:49:54,552 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhSetAutoRespond [2019-11-07 00:49:54,552 INFO L138 BoogieDeclarations]: Found implementation of procedure bobSetAddressBook [2019-11-07 00:49:54,552 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-11-07 00:49:54,552 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-11-07 00:49:54,553 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2019-11-07 00:49:54,553 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AddressBook [2019-11-07 00:49:54,553 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-11-07 00:49:54,553 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-11-07 00:49:54,553 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Encrypt [2019-11-07 00:49:54,554 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-11-07 00:49:54,554 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Verify [2019-11-07 00:49:54,554 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-11-07 00:49:54,554 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-11-07 00:49:54,555 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-11-07 00:49:54,555 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-11-07 00:49:54,555 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-11-07 00:49:54,555 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-11-07 00:49:54,555 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-11-07 00:49:54,555 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-11-07 00:49:54,556 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-11-07 00:49:54,556 INFO L138 BoogieDeclarations]: Found implementation of procedure autoRespond [2019-11-07 00:49:54,556 INFO L138 BoogieDeclarations]: Found implementation of procedure sendToAddressBook [2019-11-07 00:49:54,556 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-11-07 00:49:54,556 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-11-07 00:49:54,557 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-11-07 00:49:54,557 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-11-07 00:49:54,557 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-11-07 00:49:54,557 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-11-07 00:49:54,557 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-11-07 00:49:54,557 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-11-07 00:49:54,558 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-11-07 00:49:54,558 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-11-07 00:49:54,558 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-11-07 00:49:54,558 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-11-07 00:49:54,558 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-11-07 00:49:54,559 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-11-07 00:49:54,559 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-11-07 00:49:54,559 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-11-07 00:49:54,559 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-11-07 00:49:54,560 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-11-07 00:49:54,560 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-11-07 00:49:54,560 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-11-07 00:49:54,560 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-11-07 00:49:54,560 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-11-07 00:49:54,560 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-11-07 00:49:54,561 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 00:49:54,561 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 00:49:54,561 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 00:49:54,561 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 00:49:54,561 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-11-07 00:49:54,562 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__AddressBook [2019-11-07 00:49:54,562 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Sign [2019-11-07 00:49:54,562 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-11-07 00:49:54,562 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-11-07 00:49:54,562 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-11-07 00:49:54,563 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-11-07 00:49:54,563 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-11-07 00:49:54,563 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 00:49:54,563 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 00:49:54,563 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 00:49:54,564 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-11-07 00:49:54,564 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-11-07 00:49:54,564 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-11-07 00:49:54,564 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-11-07 00:49:54,564 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-11-07 00:49:54,564 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-11-07 00:49:54,565 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-11-07 00:49:54,565 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-11-07 00:49:54,565 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-11-07 00:49:54,565 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-11-07 00:49:54,565 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-11-07 00:49:54,565 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-11-07 00:49:54,566 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-11-07 00:49:54,566 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-11-07 00:49:54,566 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-11-07 00:49:54,566 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-11-07 00:49:54,567 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-11-07 00:49:54,567 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-11-07 00:49:54,567 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-11-07 00:49:54,567 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-11-07 00:49:54,567 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-11-07 00:49:54,567 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-11-07 00:49:54,568 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-11-07 00:49:54,568 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-11-07 00:49:54,568 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-11-07 00:49:54,568 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-11-07 00:49:54,568 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-11-07 00:49:54,568 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-11-07 00:49:54,568 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-11-07 00:49:54,569 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 00:49:54,569 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-11-07 00:49:54,569 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-11-07 00:49:54,569 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-11-07 00:49:54,569 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__VerifyForward_spec__1 [2019-11-07 00:49:54,570 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 00:49:54,570 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 00:49:54,570 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-11-07 00:49:54,570 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 00:49:54,571 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 00:49:54,571 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 00:49:54,571 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 00:49:54,571 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 00:49:54,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 00:49:54,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 00:49:54,572 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 00:49:54,572 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 00:49:54,572 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 00:49:54,572 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 00:49:54,573 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 00:49:54,573 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 00:49:54,573 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 00:49:54,573 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 00:49:54,574 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 00:49:54,574 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 00:49:54,574 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 00:49:54,574 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 00:49:54,575 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-11-07 00:49:54,575 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-11-07 00:49:54,575 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-11-07 00:49:54,575 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-11-07 00:49:54,575 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-11-07 00:49:54,576 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-11-07 00:49:54,576 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-11-07 00:49:54,576 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-11-07 00:49:54,576 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-11-07 00:49:54,576 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-11-07 00:49:54,576 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-11-07 00:49:54,577 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 00:49:54,577 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 00:49:54,577 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 00:49:54,577 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-11-07 00:49:54,577 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-11-07 00:49:54,577 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-11-07 00:49:54,578 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-11-07 00:49:54,578 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-11-07 00:49:54,578 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-11-07 00:49:54,578 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-11-07 00:49:54,578 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-11-07 00:49:54,578 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-11-07 00:49:54,579 INFO L130 BoogieDeclarations]: Found specification of procedure rjhSetAutoRespond [2019-11-07 00:49:54,579 INFO L130 BoogieDeclarations]: Found specification of procedure bobSetAddressBook [2019-11-07 00:49:54,579 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-11-07 00:49:54,579 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-11-07 00:49:54,579 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-11-07 00:49:54,579 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-11-07 00:49:54,580 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-11-07 00:49:54,580 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-11-07 00:49:54,580 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-11-07 00:49:54,580 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-11-07 00:49:54,580 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-11-07 00:49:54,580 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-11-07 00:49:54,581 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-11-07 00:49:54,581 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-11-07 00:49:54,581 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-11-07 00:49:54,581 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-11-07 00:49:54,581 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-11-07 00:49:54,581 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-11-07 00:49:54,582 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-11-07 00:49:54,582 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-11-07 00:49:54,582 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-11-07 00:49:54,582 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-11-07 00:49:54,582 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-11-07 00:49:54,583 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-11-07 00:49:54,583 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-11-07 00:49:54,583 INFO L130 BoogieDeclarations]: Found specification of procedure autoRespond [2019-11-07 00:49:54,583 INFO L130 BoogieDeclarations]: Found specification of procedure sendToAddressBook [2019-11-07 00:49:54,583 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-11-07 00:49:54,583 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-11-07 00:49:54,584 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-11-07 00:49:54,584 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2019-11-07 00:49:54,584 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AddressBook [2019-11-07 00:49:54,584 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Encrypt [2019-11-07 00:49:54,585 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-11-07 00:49:54,585 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Verify [2019-11-07 00:49:54,585 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-11-07 00:49:54,585 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-11-07 00:49:54,585 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-11-07 00:49:54,586 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-11-07 00:49:54,586 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-11-07 00:49:54,586 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-11-07 00:49:54,586 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-11-07 00:49:54,587 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 00:49:54,587 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-11-07 00:49:54,587 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-11-07 00:49:54,587 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-11-07 00:49:54,588 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__AddressBook [2019-11-07 00:49:54,588 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Sign [2019-11-07 00:49:54,588 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-11-07 00:49:54,588 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 00:49:54,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 00:49:54,589 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 00:49:57,136 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 00:49:57,136 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-07 00:49:57,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:49:57 BoogieIcfgContainer [2019-11-07 00:49:57,139 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 00:49:57,141 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 00:49:57,141 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 00:49:57,145 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 00:49:57,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:49:52" (1/3) ... [2019-11-07 00:49:57,147 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f0cb92d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:49:57, skipping insertion in model container [2019-11-07 00:49:57,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:49:54" (2/3) ... [2019-11-07 00:49:57,148 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f0cb92d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:49:57, skipping insertion in model container [2019-11-07 00:49:57,148 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:49:57" (3/3) ... [2019-11-07 00:49:57,150 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec27_product32.cil.c [2019-11-07 00:49:57,161 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 00:49:57,176 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 00:49:57,188 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 00:49:57,236 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 00:49:57,236 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 00:49:57,236 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 00:49:57,236 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 00:49:57,236 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 00:49:57,236 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 00:49:57,237 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 00:49:57,237 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 00:49:57,274 INFO L276 IsEmpty]: Start isEmpty. Operand 639 states. [2019-11-07 00:49:57,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2019-11-07 00:49:57,303 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:49:57,306 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:49:57,309 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:49:57,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:49:57,316 INFO L82 PathProgramCache]: Analyzing trace with hash -175128502, now seen corresponding path program 1 times [2019-11-07 00:49:57,327 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:49:57,327 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700973218] [2019-11-07 00:49:57,328 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:49:57,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:49:58,074 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-11-07 00:49:58,075 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700973218] [2019-11-07 00:49:58,076 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:49:58,076 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 00:49:58,077 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262148037] [2019-11-07 00:49:58,085 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 00:49:58,087 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:49:58,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 00:49:58,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 00:49:58,105 INFO L87 Difference]: Start difference. First operand 639 states. Second operand 2 states. [2019-11-07 00:49:58,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:49:58,243 INFO L93 Difference]: Finished difference Result 918 states and 1250 transitions. [2019-11-07 00:49:58,243 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 00:49:58,245 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 220 [2019-11-07 00:49:58,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:49:58,283 INFO L225 Difference]: With dead ends: 918 [2019-11-07 00:49:58,283 INFO L226 Difference]: Without dead ends: 587 [2019-11-07 00:49:58,296 INFO L630 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 [2019-11-07 00:49:58,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2019-11-07 00:49:58,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 587. [2019-11-07 00:49:58,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 587 states. [2019-11-07 00:49:58,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 587 states to 587 states and 801 transitions. [2019-11-07 00:49:58,421 INFO L78 Accepts]: Start accepts. Automaton has 587 states and 801 transitions. Word has length 220 [2019-11-07 00:49:58,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:49:58,424 INFO L462 AbstractCegarLoop]: Abstraction has 587 states and 801 transitions. [2019-11-07 00:49:58,424 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 00:49:58,424 INFO L276 IsEmpty]: Start isEmpty. Operand 587 states and 801 transitions. [2019-11-07 00:49:58,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2019-11-07 00:49:58,429 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:49:58,430 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:49:58,430 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:49:58,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:49:58,431 INFO L82 PathProgramCache]: Analyzing trace with hash 217234565, now seen corresponding path program 1 times [2019-11-07 00:49:58,431 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:49:58,431 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734845630] [2019-11-07 00:49:58,431 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:49:58,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:49:58,854 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-11-07 00:49:58,854 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734845630] [2019-11-07 00:49:58,855 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:49:58,855 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:49:58,855 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219539734] [2019-11-07 00:49:58,871 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:49:58,877 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:49:58,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:49:58,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:49:58,878 INFO L87 Difference]: Start difference. First operand 587 states and 801 transitions. Second operand 3 states. [2019-11-07 00:49:58,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:49:58,958 INFO L93 Difference]: Finished difference Result 901 states and 1210 transitions. [2019-11-07 00:49:58,958 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:49:58,958 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 221 [2019-11-07 00:49:58,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:49:58,968 INFO L225 Difference]: With dead ends: 901 [2019-11-07 00:49:58,968 INFO L226 Difference]: Without dead ends: 590 [2019-11-07 00:49:58,970 INFO L630 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 [2019-11-07 00:49:58,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2019-11-07 00:49:59,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 589. [2019-11-07 00:49:59,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 589 states. [2019-11-07 00:49:59,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 803 transitions. [2019-11-07 00:49:59,016 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 803 transitions. Word has length 221 [2019-11-07 00:49:59,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:49:59,017 INFO L462 AbstractCegarLoop]: Abstraction has 589 states and 803 transitions. [2019-11-07 00:49:59,017 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:49:59,017 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 803 transitions. [2019-11-07 00:49:59,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2019-11-07 00:49:59,030 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:49:59,030 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-11-07 00:49:59,030 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:49:59,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:49:59,031 INFO L82 PathProgramCache]: Analyzing trace with hash 1493318645, now seen corresponding path program 1 times [2019-11-07 00:49:59,031 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:49:59,031 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995855145] [2019-11-07 00:49:59,031 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:49:59,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:49:59,294 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-11-07 00:49:59,294 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995855145] [2019-11-07 00:49:59,294 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:49:59,295 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:49:59,295 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859766068] [2019-11-07 00:49:59,295 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:49:59,299 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:49:59,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:49:59,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:49:59,300 INFO L87 Difference]: Start difference. First operand 589 states and 803 transitions. Second operand 3 states. [2019-11-07 00:49:59,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:49:59,346 INFO L93 Difference]: Finished difference Result 1156 states and 1607 transitions. [2019-11-07 00:49:59,347 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:49:59,347 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 231 [2019-11-07 00:49:59,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:49:59,356 INFO L225 Difference]: With dead ends: 1156 [2019-11-07 00:49:59,356 INFO L226 Difference]: Without dead ends: 632 [2019-11-07 00:49:59,360 INFO L630 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 [2019-11-07 00:49:59,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2019-11-07 00:49:59,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 631. [2019-11-07 00:49:59,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 631 states. [2019-11-07 00:49:59,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 631 states to 631 states and 875 transitions. [2019-11-07 00:49:59,413 INFO L78 Accepts]: Start accepts. Automaton has 631 states and 875 transitions. Word has length 231 [2019-11-07 00:49:59,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:49:59,415 INFO L462 AbstractCegarLoop]: Abstraction has 631 states and 875 transitions. [2019-11-07 00:49:59,415 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:49:59,415 INFO L276 IsEmpty]: Start isEmpty. Operand 631 states and 875 transitions. [2019-11-07 00:49:59,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2019-11-07 00:49:59,423 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:49:59,424 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-11-07 00:49:59,424 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:49:59,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:49:59,432 INFO L82 PathProgramCache]: Analyzing trace with hash -1395259844, now seen corresponding path program 1 times [2019-11-07 00:49:59,433 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:49:59,433 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942114851] [2019-11-07 00:49:59,433 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:49:59,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:49:59,735 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-11-07 00:49:59,736 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942114851] [2019-11-07 00:49:59,736 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:49:59,738 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:49:59,739 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020647986] [2019-11-07 00:49:59,740 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:49:59,741 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:49:59,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:49:59,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:49:59,741 INFO L87 Difference]: Start difference. First operand 631 states and 875 transitions. Second operand 3 states. [2019-11-07 00:49:59,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:49:59,782 INFO L93 Difference]: Finished difference Result 1279 states and 1818 transitions. [2019-11-07 00:49:59,782 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:49:59,783 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 232 [2019-11-07 00:49:59,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:49:59,787 INFO L225 Difference]: With dead ends: 1279 [2019-11-07 00:49:59,788 INFO L226 Difference]: Without dead ends: 713 [2019-11-07 00:49:59,790 INFO L630 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 [2019-11-07 00:49:59,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2019-11-07 00:49:59,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 712. [2019-11-07 00:49:59,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 712 states. [2019-11-07 00:49:59,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 712 states to 712 states and 1013 transitions. [2019-11-07 00:49:59,874 INFO L78 Accepts]: Start accepts. Automaton has 712 states and 1013 transitions. Word has length 232 [2019-11-07 00:49:59,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:49:59,875 INFO L462 AbstractCegarLoop]: Abstraction has 712 states and 1013 transitions. [2019-11-07 00:49:59,875 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:49:59,875 INFO L276 IsEmpty]: Start isEmpty. Operand 712 states and 1013 transitions. [2019-11-07 00:49:59,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2019-11-07 00:49:59,880 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:49:59,880 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-11-07 00:49:59,881 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:49:59,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:49:59,881 INFO L82 PathProgramCache]: Analyzing trace with hash -1916343691, now seen corresponding path program 1 times [2019-11-07 00:49:59,881 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:49:59,881 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549632108] [2019-11-07 00:49:59,882 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:49:59,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:50:00,052 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-11-07 00:50:00,052 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549632108] [2019-11-07 00:50:00,053 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:50:00,053 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:50:00,053 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566043415] [2019-11-07 00:50:00,054 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:50:00,054 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:50:00,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:50:00,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:50:00,055 INFO L87 Difference]: Start difference. First operand 712 states and 1013 transitions. Second operand 3 states. [2019-11-07 00:50:00,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:50:00,102 INFO L93 Difference]: Finished difference Result 1516 states and 2222 transitions. [2019-11-07 00:50:00,102 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:50:00,102 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 233 [2019-11-07 00:50:00,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:50:00,109 INFO L225 Difference]: With dead ends: 1516 [2019-11-07 00:50:00,109 INFO L226 Difference]: Without dead ends: 869 [2019-11-07 00:50:00,111 INFO L630 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 [2019-11-07 00:50:00,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 869 states. [2019-11-07 00:50:00,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 869 to 868. [2019-11-07 00:50:00,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 868 states. [2019-11-07 00:50:00,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 868 states to 868 states and 1277 transitions. [2019-11-07 00:50:00,149 INFO L78 Accepts]: Start accepts. Automaton has 868 states and 1277 transitions. Word has length 233 [2019-11-07 00:50:00,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:50:00,150 INFO L462 AbstractCegarLoop]: Abstraction has 868 states and 1277 transitions. [2019-11-07 00:50:00,150 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:50:00,150 INFO L276 IsEmpty]: Start isEmpty. Operand 868 states and 1277 transitions. [2019-11-07 00:50:00,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2019-11-07 00:50:00,158 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:50:00,159 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-11-07 00:50:00,159 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:50:00,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:50:00,160 INFO L82 PathProgramCache]: Analyzing trace with hash 1288958908, now seen corresponding path program 1 times [2019-11-07 00:50:00,160 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:50:00,161 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166984711] [2019-11-07 00:50:00,161 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:50:00,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:50:00,459 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-11-07 00:50:00,460 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166984711] [2019-11-07 00:50:00,461 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:50:00,461 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:50:00,462 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843264828] [2019-11-07 00:50:00,463 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:50:00,463 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:50:00,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:50:00,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:50:00,464 INFO L87 Difference]: Start difference. First operand 868 states and 1277 transitions. Second operand 3 states. [2019-11-07 00:50:00,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:50:00,533 INFO L93 Difference]: Finished difference Result 1972 states and 2994 transitions. [2019-11-07 00:50:00,533 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:50:00,533 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 234 [2019-11-07 00:50:00,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:50:00,541 INFO L225 Difference]: With dead ends: 1972 [2019-11-07 00:50:00,541 INFO L226 Difference]: Without dead ends: 1169 [2019-11-07 00:50:00,546 INFO L630 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 [2019-11-07 00:50:00,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1169 states. [2019-11-07 00:50:00,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1169 to 1168. [2019-11-07 00:50:00,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1168 states. [2019-11-07 00:50:00,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1168 states to 1168 states and 1781 transitions. [2019-11-07 00:50:00,600 INFO L78 Accepts]: Start accepts. Automaton has 1168 states and 1781 transitions. Word has length 234 [2019-11-07 00:50:00,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:50:00,601 INFO L462 AbstractCegarLoop]: Abstraction has 1168 states and 1781 transitions. [2019-11-07 00:50:00,601 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:50:00,602 INFO L276 IsEmpty]: Start isEmpty. Operand 1168 states and 1781 transitions. [2019-11-07 00:50:00,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2019-11-07 00:50:00,609 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:50:00,610 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-11-07 00:50:00,610 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:50:00,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:50:00,610 INFO L82 PathProgramCache]: Analyzing trace with hash -1347912636, now seen corresponding path program 1 times [2019-11-07 00:50:00,610 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:50:00,611 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709358425] [2019-11-07 00:50:00,611 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:50:00,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:50:01,103 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-11-07 00:50:01,103 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709358425] [2019-11-07 00:50:01,103 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1476382811] [2019-11-07 00:50:01,104 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 [2019-11-07 00:50:01,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:50:01,834 INFO L256 TraceCheckSpWp]: Trace formula consists of 3220 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-07 00:50:01,857 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:50:02,289 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-11-07 00:50:02,289 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:50:02,726 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:50:02,831 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:50:02,930 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:50:03,116 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-11-07 00:50:03,116 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 00:50:03,116 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [19, 9] total 32 [2019-11-07 00:50:03,117 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066741765] [2019-11-07 00:50:03,118 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-07 00:50:03,118 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:50:03,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-07 00:50:03,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=906, Unknown=0, NotChecked=0, Total=992 [2019-11-07 00:50:03,120 INFO L87 Difference]: Start difference. First operand 1168 states and 1781 transitions. Second operand 9 states. [2019-11-07 00:50:04,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:50:04,626 INFO L93 Difference]: Finished difference Result 2314 states and 3542 transitions. [2019-11-07 00:50:04,626 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-07 00:50:04,627 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 237 [2019-11-07 00:50:04,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:50:04,634 INFO L225 Difference]: With dead ends: 2314 [2019-11-07 00:50:04,635 INFO L226 Difference]: Without dead ends: 1182 [2019-11-07 00:50:04,639 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 500 GetRequests, 463 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=107, Invalid=1083, Unknown=0, NotChecked=0, Total=1190 [2019-11-07 00:50:04,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1182 states. [2019-11-07 00:50:04,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1182 to 1182. [2019-11-07 00:50:04,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1182 states. [2019-11-07 00:50:04,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1182 states to 1182 states and 1799 transitions. [2019-11-07 00:50:04,718 INFO L78 Accepts]: Start accepts. Automaton has 1182 states and 1799 transitions. Word has length 237 [2019-11-07 00:50:04,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:50:04,718 INFO L462 AbstractCegarLoop]: Abstraction has 1182 states and 1799 transitions. [2019-11-07 00:50:04,718 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-07 00:50:04,718 INFO L276 IsEmpty]: Start isEmpty. Operand 1182 states and 1799 transitions. [2019-11-07 00:50:04,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2019-11-07 00:50:04,727 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:50:04,727 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2019-11-07 00:50:04,936 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:50:04,936 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:50:04,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:50:04,937 INFO L82 PathProgramCache]: Analyzing trace with hash -1469165754, now seen corresponding path program 1 times [2019-11-07 00:50:04,937 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:50:04,937 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994971439] [2019-11-07 00:50:04,937 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:50:05,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:50:05,357 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-11-07 00:50:05,358 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994971439] [2019-11-07 00:50:05,358 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844630657] [2019-11-07 00:50:05,358 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 [2019-11-07 00:50:06,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:50:06,029 INFO L256 TraceCheckSpWp]: Trace formula consists of 3221 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-07 00:50:06,038 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:50:06,214 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-11-07 00:50:06,214 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:50:06,533 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:50:06,593 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:50:06,664 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-11-07 00:50:06,665 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 00:50:06,665 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [19, 7] total 28 [2019-11-07 00:50:06,665 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316278096] [2019-11-07 00:50:06,666 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:50:06,668 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:50:06,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:50:06,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=684, Unknown=0, NotChecked=0, Total=756 [2019-11-07 00:50:06,669 INFO L87 Difference]: Start difference. First operand 1182 states and 1799 transitions. Second operand 7 states. [2019-11-07 00:50:07,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:50:07,782 INFO L93 Difference]: Finished difference Result 2315 states and 3552 transitions. [2019-11-07 00:50:07,782 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 00:50:07,783 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 238 [2019-11-07 00:50:07,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:50:07,790 INFO L225 Difference]: With dead ends: 2315 [2019-11-07 00:50:07,791 INFO L226 Difference]: Without dead ends: 1184 [2019-11-07 00:50:07,796 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 501 GetRequests, 470 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=86, Invalid=784, Unknown=0, NotChecked=0, Total=870 [2019-11-07 00:50:07,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1184 states. [2019-11-07 00:50:07,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1184 to 1184. [2019-11-07 00:50:07,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1184 states. [2019-11-07 00:50:07,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1184 states to 1184 states and 1802 transitions. [2019-11-07 00:50:07,851 INFO L78 Accepts]: Start accepts. Automaton has 1184 states and 1802 transitions. Word has length 238 [2019-11-07 00:50:07,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:50:07,852 INFO L462 AbstractCegarLoop]: Abstraction has 1184 states and 1802 transitions. [2019-11-07 00:50:07,852 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 00:50:07,852 INFO L276 IsEmpty]: Start isEmpty. Operand 1184 states and 1802 transitions. [2019-11-07 00:50:07,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2019-11-07 00:50:07,859 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:50:07,860 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2019-11-07 00:50:08,067 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:50:08,067 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:50:08,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:50:08,068 INFO L82 PathProgramCache]: Analyzing trace with hash 2061869789, now seen corresponding path program 1 times [2019-11-07 00:50:08,068 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:50:08,068 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726834878] [2019-11-07 00:50:08,068 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:50:08,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:50:08,504 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-11-07 00:50:08,505 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726834878] [2019-11-07 00:50:08,505 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1045186911] [2019-11-07 00:50:08,505 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 [2019-11-07 00:50:09,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:50:09,184 INFO L256 TraceCheckSpWp]: Trace formula consists of 3222 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-07 00:50:09,192 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:50:09,391 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-11-07 00:50:09,391 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:50:09,749 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:50:09,836 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:50:09,913 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:50:10,062 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-11-07 00:50:10,062 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:50:10,063 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [19] total 33 [2019-11-07 00:50:10,063 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422120733] [2019-11-07 00:50:10,067 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-07 00:50:10,068 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:50:10,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-07 00:50:10,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=961, Unknown=0, NotChecked=0, Total=1056 [2019-11-07 00:50:10,073 INFO L87 Difference]: Start difference. First operand 1184 states and 1802 transitions. Second operand 16 states. [2019-11-07 00:50:11,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:50:11,842 INFO L93 Difference]: Finished difference Result 2319 states and 3546 transitions. [2019-11-07 00:50:11,843 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-07 00:50:11,843 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 239 [2019-11-07 00:50:11,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:50:11,852 INFO L225 Difference]: With dead ends: 2319 [2019-11-07 00:50:11,852 INFO L226 Difference]: Without dead ends: 1196 [2019-11-07 00:50:11,856 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 505 GetRequests, 467 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=127, Invalid=1205, Unknown=0, NotChecked=0, Total=1332 [2019-11-07 00:50:11,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1196 states. [2019-11-07 00:50:11,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1196 to 1194. [2019-11-07 00:50:11,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1194 states. [2019-11-07 00:50:11,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1194 states to 1194 states and 1813 transitions. [2019-11-07 00:50:11,909 INFO L78 Accepts]: Start accepts. Automaton has 1194 states and 1813 transitions. Word has length 239 [2019-11-07 00:50:11,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:50:11,909 INFO L462 AbstractCegarLoop]: Abstraction has 1194 states and 1813 transitions. [2019-11-07 00:50:11,910 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-07 00:50:11,910 INFO L276 IsEmpty]: Start isEmpty. Operand 1194 states and 1813 transitions. [2019-11-07 00:50:11,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2019-11-07 00:50:11,915 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:50:11,916 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2019-11-07 00:50:12,123 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:50:12,124 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:50:12,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:50:12,124 INFO L82 PathProgramCache]: Analyzing trace with hash -2071155939, now seen corresponding path program 2 times [2019-11-07 00:50:12,125 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:50:12,126 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012903195] [2019-11-07 00:50:12,126 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:50:12,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:50:12,790 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-11-07 00:50:12,790 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012903195] [2019-11-07 00:50:12,791 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691405191] [2019-11-07 00:50:12,791 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 [2019-11-07 00:50:13,363 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2019-11-07 00:50:13,363 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-07 00:50:13,370 INFO L256 TraceCheckSpWp]: Trace formula consists of 2493 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-07 00:50:13,378 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:50:13,641 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-11-07 00:50:13,642 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:50:14,118 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-11-07 00:50:14,119 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:50:14,119 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [19] total 31 [2019-11-07 00:50:14,119 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206850205] [2019-11-07 00:50:14,120 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-07 00:50:14,120 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:50:14,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-07 00:50:14,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=853, Unknown=0, NotChecked=0, Total=930 [2019-11-07 00:50:14,121 INFO L87 Difference]: Start difference. First operand 1194 states and 1813 transitions. Second operand 14 states. [2019-11-07 00:50:16,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:50:16,288 INFO L93 Difference]: Finished difference Result 3812 states and 5855 transitions. [2019-11-07 00:50:16,289 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-11-07 00:50:16,289 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 240 [2019-11-07 00:50:16,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:50:16,323 INFO L225 Difference]: With dead ends: 3812 [2019-11-07 00:50:16,323 INFO L226 Difference]: Without dead ends: 3514 [2019-11-07 00:50:16,327 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 524 GetRequests, 478 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=201, Invalid=1869, Unknown=0, NotChecked=0, Total=2070 [2019-11-07 00:50:16,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3514 states. [2019-11-07 00:50:16,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3514 to 3168. [2019-11-07 00:50:16,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3168 states. [2019-11-07 00:50:16,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3168 states to 3168 states and 4990 transitions. [2019-11-07 00:50:16,502 INFO L78 Accepts]: Start accepts. Automaton has 3168 states and 4990 transitions. Word has length 240 [2019-11-07 00:50:16,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:50:16,503 INFO L462 AbstractCegarLoop]: Abstraction has 3168 states and 4990 transitions. [2019-11-07 00:50:16,503 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-07 00:50:16,503 INFO L276 IsEmpty]: Start isEmpty. Operand 3168 states and 4990 transitions. [2019-11-07 00:50:16,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2019-11-07 00:50:16,523 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:50:16,524 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2019-11-07 00:50:16,731 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:50:16,732 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:50:16,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:50:16,733 INFO L82 PathProgramCache]: Analyzing trace with hash -552310949, now seen corresponding path program 1 times [2019-11-07 00:50:16,733 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:50:16,733 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815517952] [2019-11-07 00:50:16,734 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:50:16,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:50:17,126 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-11-07 00:50:17,126 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815517952] [2019-11-07 00:50:17,127 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1111928375] [2019-11-07 00:50:17,127 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2019-11-07 00:50:17,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:50:17,873 INFO L256 TraceCheckSpWp]: Trace formula consists of 3224 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-07 00:50:17,880 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:50:18,053 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-11-07 00:50:18,053 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:50:18,453 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:50:18,543 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:50:18,631 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:50:18,777 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-11-07 00:50:18,778 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:50:18,779 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [15] total 28 [2019-11-07 00:50:18,781 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720060049] [2019-11-07 00:50:18,783 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-11-07 00:50:18,784 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:50:18,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-11-07 00:50:18,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=683, Unknown=0, NotChecked=0, Total=756 [2019-11-07 00:50:18,785 INFO L87 Difference]: Start difference. First operand 3168 states and 4990 transitions. Second operand 15 states. [2019-11-07 00:50:21,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:50:21,482 INFO L93 Difference]: Finished difference Result 6230 states and 9856 transitions. [2019-11-07 00:50:21,483 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-07 00:50:21,483 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 241 [2019-11-07 00:50:21,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:50:21,502 INFO L225 Difference]: With dead ends: 6230 [2019-11-07 00:50:21,502 INFO L226 Difference]: Without dead ends: 3174 [2019-11-07 00:50:21,515 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 505 GetRequests, 471 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=102, Invalid=890, Unknown=0, NotChecked=0, Total=992 [2019-11-07 00:50:21,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3174 states. [2019-11-07 00:50:21,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3174 to 3168. [2019-11-07 00:50:21,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3168 states. [2019-11-07 00:50:21,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3168 states to 3168 states and 4988 transitions. [2019-11-07 00:50:21,659 INFO L78 Accepts]: Start accepts. Automaton has 3168 states and 4988 transitions. Word has length 241 [2019-11-07 00:50:21,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:50:21,660 INFO L462 AbstractCegarLoop]: Abstraction has 3168 states and 4988 transitions. [2019-11-07 00:50:21,660 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-11-07 00:50:21,660 INFO L276 IsEmpty]: Start isEmpty. Operand 3168 states and 4988 transitions. [2019-11-07 00:50:21,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2019-11-07 00:50:21,678 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:50:21,679 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2019-11-07 00:50:21,888 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:50:21,888 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:50:21,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:50:21,888 INFO L82 PathProgramCache]: Analyzing trace with hash -1621920842, now seen corresponding path program 1 times [2019-11-07 00:50:21,888 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:50:21,889 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48517438] [2019-11-07 00:50:21,889 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:50:21,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:50:22,252 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-11-07 00:50:22,252 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48517438] [2019-11-07 00:50:22,253 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [625540271] [2019-11-07 00:50:22,253 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:50:23,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:50:23,049 INFO L256 TraceCheckSpWp]: Trace formula consists of 3225 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-07 00:50:23,056 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:50:23,197 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-11-07 00:50:23,198 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:50:23,454 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:50:23,511 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:50:23,575 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-11-07 00:50:23,576 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:50:23,576 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [15] total 25 [2019-11-07 00:50:23,576 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174930402] [2019-11-07 00:50:23,577 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-07 00:50:23,577 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:50:23,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-07 00:50:23,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2019-11-07 00:50:23,578 INFO L87 Difference]: Start difference. First operand 3168 states and 4988 transitions. Second operand 12 states. [2019-11-07 00:50:25,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:50:25,395 INFO L93 Difference]: Finished difference Result 4591 states and 7114 transitions. [2019-11-07 00:50:25,395 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-07 00:50:25,395 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 242 [2019-11-07 00:50:25,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:50:25,412 INFO L225 Difference]: With dead ends: 4591 [2019-11-07 00:50:25,412 INFO L226 Difference]: Without dead ends: 2361 [2019-11-07 00:50:25,423 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 506 GetRequests, 478 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=88, Invalid=668, Unknown=0, NotChecked=0, Total=756 [2019-11-07 00:50:25,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2361 states. [2019-11-07 00:50:25,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2361 to 2361. [2019-11-07 00:50:25,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2361 states. [2019-11-07 00:50:25,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2361 states to 2361 states and 3630 transitions. [2019-11-07 00:50:25,546 INFO L78 Accepts]: Start accepts. Automaton has 2361 states and 3630 transitions. Word has length 242 [2019-11-07 00:50:25,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:50:25,546 INFO L462 AbstractCegarLoop]: Abstraction has 2361 states and 3630 transitions. [2019-11-07 00:50:25,547 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-07 00:50:25,547 INFO L276 IsEmpty]: Start isEmpty. Operand 2361 states and 3630 transitions. [2019-11-07 00:50:25,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2019-11-07 00:50:25,559 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:50:25,559 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2019-11-07 00:50:25,768 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:50:25,769 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:50:25,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:50:25,769 INFO L82 PathProgramCache]: Analyzing trace with hash 270943563, now seen corresponding path program 2 times [2019-11-07 00:50:25,770 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:50:25,770 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825841722] [2019-11-07 00:50:25,770 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:50:25,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:50:26,066 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-11-07 00:50:26,067 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825841722] [2019-11-07 00:50:26,067 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902973252] [2019-11-07 00:50:26,067 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 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:50:26,690 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2019-11-07 00:50:26,690 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-07 00:50:26,697 INFO L256 TraceCheckSpWp]: Trace formula consists of 2496 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-07 00:50:26,705 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:50:26,876 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-11-07 00:50:26,876 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:50:27,393 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-11-07 00:50:27,393 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:50:27,393 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [15] total 27 [2019-11-07 00:50:27,394 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121850212] [2019-11-07 00:50:27,395 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-07 00:50:27,395 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:50:27,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-07 00:50:27,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=638, Unknown=0, NotChecked=0, Total=702 [2019-11-07 00:50:27,396 INFO L87 Difference]: Start difference. First operand 2361 states and 3630 transitions. Second operand 14 states.