/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_spec9_product14.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 00:56:23,614 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 00:56:23,617 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 00:56:23,636 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 00:56:23,637 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 00:56:23,639 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 00:56:23,641 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 00:56:23,650 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 00:56:23,654 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 00:56:23,658 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 00:56:23,659 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 00:56:23,660 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 00:56:23,661 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 00:56:23,664 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 00:56:23,666 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 00:56:23,668 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 00:56:23,670 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 00:56:23,671 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 00:56:23,672 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 00:56:23,677 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 00:56:23,681 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 00:56:23,684 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 00:56:23,687 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 00:56:23,688 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 00:56:23,691 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 00:56:23,691 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 00:56:23,691 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 00:56:23,693 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 00:56:23,693 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 00:56:23,695 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 00:56:23,696 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 00:56:23,697 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 00:56:23,698 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 00:56:23,699 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 00:56:23,701 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 00:56:23,701 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 00:56:23,701 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 00:56:23,702 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 00:56:23,702 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 00:56:23,703 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 00:56:23,703 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 00:56:23,704 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 00:56:23,736 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 00:56:23,736 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 00:56:23,741 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 00:56:23,741 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 00:56:23,741 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 00:56:23,741 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 00:56:23,741 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 00:56:23,742 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 00:56:23,742 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 00:56:23,742 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 00:56:23,742 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 00:56:23,742 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 00:56:23,746 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 00:56:23,746 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 00:56:23,746 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 00:56:23,746 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 00:56:23,747 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 00:56:23,747 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 00:56:23,747 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 00:56:23,747 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 00:56:23,747 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 00:56:23,748 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:56:23,748 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 00:56:23,749 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 00:56:23,749 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 00:56:23,749 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 00:56:23,750 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 00:56:23,750 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 00:56:23,750 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 00:56:24,053 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 00:56:24,067 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 00:56:24,070 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 00:56:24,072 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 00:56:24,072 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 00:56:24,073 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec9_product14.cil.c [2019-11-07 00:56:24,150 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c634609fb/be4c6978691e46558401fc9054bdfc78/FLAGc030ea843 [2019-11-07 00:56:24,775 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 00:56:24,775 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec9_product14.cil.c [2019-11-07 00:56:24,803 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c634609fb/be4c6978691e46558401fc9054bdfc78/FLAGc030ea843 [2019-11-07 00:56:24,998 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c634609fb/be4c6978691e46558401fc9054bdfc78 [2019-11-07 00:56:25,005 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 00:56:25,007 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 00:56:25,008 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 00:56:25,008 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 00:56:25,012 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 00:56:25,013 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:56:24" (1/1) ... [2019-11-07 00:56:25,016 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a697bfe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:25, skipping insertion in model container [2019-11-07 00:56:25,016 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:56:24" (1/1) ... [2019-11-07 00:56:25,024 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 00:56:25,107 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 00:56:25,829 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:56:25,858 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 00:56:26,054 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:56:26,131 INFO L192 MainTranslator]: Completed translation [2019-11-07 00:56:26,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:26 WrapperNode [2019-11-07 00:56:26,131 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 00:56:26,132 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 00:56:26,132 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 00:56:26,132 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 00:56:26,146 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:26" (1/1) ... [2019-11-07 00:56:26,147 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:26" (1/1) ... [2019-11-07 00:56:26,208 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:26" (1/1) ... [2019-11-07 00:56:26,208 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:26" (1/1) ... [2019-11-07 00:56:26,272 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:26" (1/1) ... [2019-11-07 00:56:26,302 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:26" (1/1) ... [2019-11-07 00:56:26,325 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:26" (1/1) ... [2019-11-07 00:56:26,338 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 00:56:26,339 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 00:56:26,339 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 00:56:26,340 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 00:56:26,341 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:26" (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 00:56:26,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 00:56:26,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 00:56:26,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 00:56:26,405 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-11-07 00:56:26,405 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-11-07 00:56:26,406 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-11-07 00:56:26,406 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-11-07 00:56:26,406 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-11-07 00:56:26,406 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-11-07 00:56:26,407 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-11-07 00:56:26,407 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-11-07 00:56:26,407 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 00:56:26,407 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 00:56:26,407 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-11-07 00:56:26,408 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-11-07 00:56:26,408 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-11-07 00:56:26,408 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-11-07 00:56:26,408 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-11-07 00:56:26,408 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-11-07 00:56:26,409 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-11-07 00:56:26,409 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-11-07 00:56:26,411 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-11-07 00:56:26,412 INFO L138 BoogieDeclarations]: Found implementation of procedure bobSetAddressBook [2019-11-07 00:56:26,412 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptForward_spec__1 [2019-11-07 00:56:26,412 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptForward_spec__2 [2019-11-07 00:56:26,414 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 00:56:26,414 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-11-07 00:56:26,414 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-11-07 00:56:26,414 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Encrypt [2019-11-07 00:56:26,414 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-11-07 00:56:26,415 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-11-07 00:56:26,416 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__AddressBook [2019-11-07 00:56:26,416 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-11-07 00:56:26,416 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-11-07 00:56:26,416 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-11-07 00:56:26,417 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-11-07 00:56:26,417 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-11-07 00:56:26,417 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-11-07 00:56:26,417 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-11-07 00:56:26,417 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-11-07 00:56:26,417 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-11-07 00:56:26,418 INFO L138 BoogieDeclarations]: Found implementation of procedure sendToAddressBook [2019-11-07 00:56:26,418 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 00:56:26,418 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 00:56:26,418 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 00:56:26,418 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 00:56:26,419 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 00:56:26,419 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-11-07 00:56:26,419 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 00:56:26,419 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 00:56:26,419 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 00:56:26,419 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 00:56:26,420 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 00:56:26,420 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 00:56:26,420 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-11-07 00:56:26,420 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-11-07 00:56:26,420 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-11-07 00:56:26,420 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-11-07 00:56:26,421 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-11-07 00:56:26,421 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-11-07 00:56:26,421 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-11-07 00:56:26,421 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-11-07 00:56:26,421 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-11-07 00:56:26,422 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-11-07 00:56:26,422 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-11-07 00:56:26,422 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-11-07 00:56:26,422 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-11-07 00:56:26,422 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-11-07 00:56:26,423 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-11-07 00:56:26,423 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-11-07 00:56:26,423 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-11-07 00:56:26,423 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-11-07 00:56:26,423 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-11-07 00:56:26,424 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-11-07 00:56:26,425 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-11-07 00:56:26,425 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-11-07 00:56:26,425 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-11-07 00:56:26,425 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-11-07 00:56:26,425 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-11-07 00:56:26,426 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-11-07 00:56:26,426 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-11-07 00:56:26,427 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-11-07 00:56:26,427 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-11-07 00:56:26,427 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-11-07 00:56:26,427 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-11-07 00:56:26,428 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-11-07 00:56:26,428 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-11-07 00:56:26,429 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-11-07 00:56:26,429 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-11-07 00:56:26,430 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-11-07 00:56:26,430 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-11-07 00:56:26,430 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-11-07 00:56:26,430 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-11-07 00:56:26,430 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-11-07 00:56:26,430 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-11-07 00:56:26,431 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-11-07 00:56:26,431 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-11-07 00:56:26,431 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-11-07 00:56:26,431 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-11-07 00:56:26,431 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-11-07 00:56:26,431 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-11-07 00:56:26,432 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-11-07 00:56:26,432 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-11-07 00:56:26,432 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-11-07 00:56:26,432 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-11-07 00:56:26,432 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-11-07 00:56:26,433 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-11-07 00:56:26,433 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-11-07 00:56:26,433 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-11-07 00:56:26,433 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-11-07 00:56:26,433 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 00:56:26,433 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 00:56:26,434 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 00:56:26,434 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-11-07 00:56:26,434 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-11-07 00:56:26,434 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-11-07 00:56:26,434 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-11-07 00:56:26,435 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-11-07 00:56:26,435 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-11-07 00:56:26,435 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-11-07 00:56:26,436 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-11-07 00:56:26,436 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-11-07 00:56:26,436 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-11-07 00:56:26,436 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-11-07 00:56:26,438 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 00:56:26,438 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 00:56:26,438 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 00:56:26,438 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-11-07 00:56:26,438 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-11-07 00:56:26,438 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-11-07 00:56:26,439 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-11-07 00:56:26,439 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-11-07 00:56:26,439 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-11-07 00:56:26,440 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-11-07 00:56:26,440 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-11-07 00:56:26,440 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-11-07 00:56:26,441 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-11-07 00:56:26,444 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-11-07 00:56:26,444 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 00:56:26,445 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 00:56:26,445 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 00:56:26,446 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-11-07 00:56:26,446 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-11-07 00:56:26,446 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-11-07 00:56:26,453 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-11-07 00:56:26,454 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-11-07 00:56:26,454 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-11-07 00:56:26,455 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-11-07 00:56:26,455 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-11-07 00:56:26,455 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-11-07 00:56:26,455 INFO L130 BoogieDeclarations]: Found specification of procedure bobSetAddressBook [2019-11-07 00:56:26,455 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-11-07 00:56:26,455 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-11-07 00:56:26,456 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-11-07 00:56:26,456 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 00:56:26,456 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 00:56:26,456 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-11-07 00:56:26,456 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptForward_spec__1 [2019-11-07 00:56:26,456 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptForward_spec__2 [2019-11-07 00:56:26,457 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-11-07 00:56:26,457 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-11-07 00:56:26,457 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-11-07 00:56:26,457 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-11-07 00:56:26,457 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-11-07 00:56:26,457 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-11-07 00:56:26,457 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-11-07 00:56:26,457 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-11-07 00:56:26,458 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-11-07 00:56:26,458 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-11-07 00:56:26,458 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-11-07 00:56:26,458 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-11-07 00:56:26,458 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-11-07 00:56:26,458 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-11-07 00:56:26,458 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-11-07 00:56:26,459 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-11-07 00:56:26,459 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-11-07 00:56:26,459 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-11-07 00:56:26,459 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-11-07 00:56:26,459 INFO L130 BoogieDeclarations]: Found specification of procedure sendToAddressBook [2019-11-07 00:56:26,459 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-11-07 00:56:26,459 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Encrypt [2019-11-07 00:56:26,460 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__AddressBook [2019-11-07 00:56:26,460 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 00:56:26,460 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-11-07 00:56:26,460 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 00:56:26,460 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 00:56:26,460 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 00:56:26,460 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 00:56:26,461 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 00:56:26,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 00:56:26,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 00:56:26,461 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 00:56:26,461 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 00:56:26,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 00:56:26,461 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 00:56:26,462 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 00:56:26,462 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 00:56:26,462 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 00:56:26,462 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 00:56:26,462 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 00:56:26,462 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-11-07 00:56:26,462 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-11-07 00:56:26,463 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-11-07 00:56:26,463 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-11-07 00:56:26,463 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-11-07 00:56:26,463 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-11-07 00:56:26,463 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-11-07 00:56:26,463 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-11-07 00:56:26,465 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-11-07 00:56:26,465 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-11-07 00:56:26,465 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-11-07 00:56:26,465 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-11-07 00:56:26,465 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-11-07 00:56:26,466 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-11-07 00:56:26,466 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-11-07 00:56:26,466 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-11-07 00:56:26,466 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-11-07 00:56:26,466 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-11-07 00:56:26,466 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-11-07 00:56:26,466 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-11-07 00:56:26,466 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-11-07 00:56:26,467 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-11-07 00:56:26,467 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-11-07 00:56:26,467 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-11-07 00:56:26,467 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-11-07 00:56:26,467 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-11-07 00:56:26,467 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-11-07 00:56:26,467 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-11-07 00:56:26,468 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-11-07 00:56:26,468 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-11-07 00:56:26,468 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-11-07 00:56:26,468 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-11-07 00:56:26,468 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 00:56:26,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 00:56:26,468 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 00:56:28,614 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 00:56:28,615 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-07 00:56:28,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:56:28 BoogieIcfgContainer [2019-11-07 00:56:28,617 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 00:56:28,618 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 00:56:28,618 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 00:56:28,621 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 00:56:28,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:56:24" (1/3) ... [2019-11-07 00:56:28,622 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52c721b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:56:28, skipping insertion in model container [2019-11-07 00:56:28,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:56:26" (2/3) ... [2019-11-07 00:56:28,623 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52c721b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:56:28, skipping insertion in model container [2019-11-07 00:56:28,623 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:56:28" (3/3) ... [2019-11-07 00:56:28,624 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec9_product14.cil.c [2019-11-07 00:56:28,634 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 00:56:28,645 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 00:56:28,656 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 00:56:28,696 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 00:56:28,696 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 00:56:28,696 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 00:56:28,696 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 00:56:28,696 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 00:56:28,696 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 00:56:28,697 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 00:56:28,697 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 00:56:28,737 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states. [2019-11-07 00:56:28,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2019-11-07 00:56:28,771 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:56:28,772 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:56:28,774 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:56:28,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:56:28,780 INFO L82 PathProgramCache]: Analyzing trace with hash 2026641383, now seen corresponding path program 1 times [2019-11-07 00:56:28,787 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:56:28,788 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611122312] [2019-11-07 00:56:28,788 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:56:29,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:56:29,436 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-11-07 00:56:29,437 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611122312] [2019-11-07 00:56:29,440 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:56:29,441 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 00:56:29,442 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370118230] [2019-11-07 00:56:29,449 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 00:56:29,451 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:56:29,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 00:56:29,466 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 00:56:29,468 INFO L87 Difference]: Start difference. First operand 521 states. Second operand 2 states. [2019-11-07 00:56:29,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:56:29,586 INFO L93 Difference]: Finished difference Result 695 states and 958 transitions. [2019-11-07 00:56:29,586 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 00:56:29,589 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 154 [2019-11-07 00:56:29,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:56:29,628 INFO L225 Difference]: With dead ends: 695 [2019-11-07 00:56:29,633 INFO L226 Difference]: Without dead ends: 470 [2019-11-07 00:56:29,641 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 00:56:29,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2019-11-07 00:56:29,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 470. [2019-11-07 00:56:29,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 470 states. [2019-11-07 00:56:29,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 470 states to 470 states and 651 transitions. [2019-11-07 00:56:29,739 INFO L78 Accepts]: Start accepts. Automaton has 470 states and 651 transitions. Word has length 154 [2019-11-07 00:56:29,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:56:29,742 INFO L462 AbstractCegarLoop]: Abstraction has 470 states and 651 transitions. [2019-11-07 00:56:29,742 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 00:56:29,742 INFO L276 IsEmpty]: Start isEmpty. Operand 470 states and 651 transitions. [2019-11-07 00:56:29,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2019-11-07 00:56:29,748 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:56:29,748 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:56:29,748 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:56:29,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:56:29,749 INFO L82 PathProgramCache]: Analyzing trace with hash 918383061, now seen corresponding path program 1 times [2019-11-07 00:56:29,749 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:56:29,749 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225446225] [2019-11-07 00:56:29,750 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:56:29,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:56:30,044 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-11-07 00:56:30,044 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225446225] [2019-11-07 00:56:30,045 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:56:30,045 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:56:30,045 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448911824] [2019-11-07 00:56:30,047 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:56:30,048 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:56:30,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:56:30,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:56:30,048 INFO L87 Difference]: Start difference. First operand 470 states and 651 transitions. Second operand 3 states. [2019-11-07 00:56:30,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:56:30,108 INFO L93 Difference]: Finished difference Result 678 states and 924 transitions. [2019-11-07 00:56:30,108 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:56:30,109 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 155 [2019-11-07 00:56:30,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:56:30,115 INFO L225 Difference]: With dead ends: 678 [2019-11-07 00:56:30,117 INFO L226 Difference]: Without dead ends: 473 [2019-11-07 00:56:30,123 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 00:56:30,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 473 states. [2019-11-07 00:56:30,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 473 to 472. [2019-11-07 00:56:30,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 472 states. [2019-11-07 00:56:30,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 472 states to 472 states and 653 transitions. [2019-11-07 00:56:30,170 INFO L78 Accepts]: Start accepts. Automaton has 472 states and 653 transitions. Word has length 155 [2019-11-07 00:56:30,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:56:30,171 INFO L462 AbstractCegarLoop]: Abstraction has 472 states and 653 transitions. [2019-11-07 00:56:30,171 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:56:30,171 INFO L276 IsEmpty]: Start isEmpty. Operand 472 states and 653 transitions. [2019-11-07 00:56:30,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2019-11-07 00:56:30,175 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:56:30,175 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:56:30,175 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:56:30,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:56:30,176 INFO L82 PathProgramCache]: Analyzing trace with hash 1716493705, now seen corresponding path program 1 times [2019-11-07 00:56:30,176 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:56:30,176 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388431418] [2019-11-07 00:56:30,176 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:56:30,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:56:30,386 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-11-07 00:56:30,386 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388431418] [2019-11-07 00:56:30,386 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:56:30,387 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:56:30,388 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728375524] [2019-11-07 00:56:30,388 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:56:30,390 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:56:30,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:56:30,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:56:30,391 INFO L87 Difference]: Start difference. First operand 472 states and 653 transitions. Second operand 3 states. [2019-11-07 00:56:30,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:56:30,432 INFO L93 Difference]: Finished difference Result 920 states and 1304 transitions. [2019-11-07 00:56:30,432 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:56:30,432 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 161 [2019-11-07 00:56:30,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:56:30,437 INFO L225 Difference]: With dead ends: 920 [2019-11-07 00:56:30,437 INFO L226 Difference]: Without dead ends: 513 [2019-11-07 00:56:30,439 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 00:56:30,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2019-11-07 00:56:30,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 512. [2019-11-07 00:56:30,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 512 states. [2019-11-07 00:56:30,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 722 transitions. [2019-11-07 00:56:30,465 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 722 transitions. Word has length 161 [2019-11-07 00:56:30,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:56:30,466 INFO L462 AbstractCegarLoop]: Abstraction has 512 states and 722 transitions. [2019-11-07 00:56:30,466 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:56:30,466 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 722 transitions. [2019-11-07 00:56:30,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2019-11-07 00:56:30,470 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:56:30,471 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:56:30,471 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:56:30,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:56:30,471 INFO L82 PathProgramCache]: Analyzing trace with hash 121065149, now seen corresponding path program 1 times [2019-11-07 00:56:30,471 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:56:30,472 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488907493] [2019-11-07 00:56:30,472 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:56:30,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:56:30,729 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-07 00:56:30,729 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488907493] [2019-11-07 00:56:30,730 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:56:30,730 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:56:30,730 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981822056] [2019-11-07 00:56:30,731 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:56:30,731 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:56:30,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:56:30,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:56:30,732 INFO L87 Difference]: Start difference. First operand 512 states and 722 transitions. Second operand 3 states. [2019-11-07 00:56:30,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:56:30,789 INFO L93 Difference]: Finished difference Result 818 states and 1146 transitions. [2019-11-07 00:56:30,790 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:56:30,790 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 162 [2019-11-07 00:56:30,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:56:30,800 INFO L225 Difference]: With dead ends: 818 [2019-11-07 00:56:30,800 INFO L226 Difference]: Without dead ends: 626 [2019-11-07 00:56:30,802 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:56:30,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2019-11-07 00:56:30,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 625. [2019-11-07 00:56:30,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 625 states. [2019-11-07 00:56:30,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 884 transitions. [2019-11-07 00:56:30,864 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 884 transitions. Word has length 162 [2019-11-07 00:56:30,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:56:30,865 INFO L462 AbstractCegarLoop]: Abstraction has 625 states and 884 transitions. [2019-11-07 00:56:30,865 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:56:30,865 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 884 transitions. [2019-11-07 00:56:30,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2019-11-07 00:56:30,878 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:56:30,879 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:56:30,879 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:56:30,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:56:30,880 INFO L82 PathProgramCache]: Analyzing trace with hash 1610932169, now seen corresponding path program 1 times [2019-11-07 00:56:30,880 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:56:30,881 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575526680] [2019-11-07 00:56:30,881 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:56:31,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:56:31,258 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-11-07 00:56:31,259 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575526680] [2019-11-07 00:56:31,259 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:56:31,260 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-11-07 00:56:31,260 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896662028] [2019-11-07 00:56:31,260 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-07 00:56:31,261 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:56:31,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-07 00:56:31,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-07 00:56:31,263 INFO L87 Difference]: Start difference. First operand 625 states and 884 transitions. Second operand 6 states. [2019-11-07 00:56:31,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:56:31,957 INFO L93 Difference]: Finished difference Result 1495 states and 2116 transitions. [2019-11-07 00:56:31,957 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-07 00:56:31,958 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 275 [2019-11-07 00:56:31,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:56:31,969 INFO L225 Difference]: With dead ends: 1495 [2019-11-07 00:56:31,969 INFO L226 Difference]: Without dead ends: 1201 [2019-11-07 00:56:31,971 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-11-07 00:56:31,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1201 states. [2019-11-07 00:56:32,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1201 to 1190. [2019-11-07 00:56:32,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1190 states. [2019-11-07 00:56:32,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1190 states to 1190 states and 1704 transitions. [2019-11-07 00:56:32,051 INFO L78 Accepts]: Start accepts. Automaton has 1190 states and 1704 transitions. Word has length 275 [2019-11-07 00:56:32,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:56:32,053 INFO L462 AbstractCegarLoop]: Abstraction has 1190 states and 1704 transitions. [2019-11-07 00:56:32,053 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-07 00:56:32,054 INFO L276 IsEmpty]: Start isEmpty. Operand 1190 states and 1704 transitions. [2019-11-07 00:56:32,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2019-11-07 00:56:32,061 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:56:32,062 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:56:32,062 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:56:32,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:56:32,063 INFO L82 PathProgramCache]: Analyzing trace with hash -1309125253, now seen corresponding path program 1 times [2019-11-07 00:56:32,063 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:56:32,063 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26726436] [2019-11-07 00:56:32,063 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:56:32,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:56:32,345 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-11-07 00:56:32,345 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26726436] [2019-11-07 00:56:32,347 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:56:32,347 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-11-07 00:56:32,347 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557184255] [2019-11-07 00:56:32,348 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-07 00:56:32,348 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:56:32,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-07 00:56:32,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-11-07 00:56:32,349 INFO L87 Difference]: Start difference. First operand 1190 states and 1704 transitions. Second operand 9 states. [2019-11-07 00:56:32,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:56:32,827 INFO L93 Difference]: Finished difference Result 1775 states and 2491 transitions. [2019-11-07 00:56:32,827 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-07 00:56:32,827 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 276 [2019-11-07 00:56:32,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:56:32,835 INFO L225 Difference]: With dead ends: 1775 [2019-11-07 00:56:32,835 INFO L226 Difference]: Without dead ends: 1164 [2019-11-07 00:56:32,839 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2019-11-07 00:56:32,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1164 states. [2019-11-07 00:56:32,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1164 to 1160. [2019-11-07 00:56:32,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1160 states. [2019-11-07 00:56:32,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1160 states to 1160 states and 1653 transitions. [2019-11-07 00:56:32,901 INFO L78 Accepts]: Start accepts. Automaton has 1160 states and 1653 transitions. Word has length 276 [2019-11-07 00:56:32,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:56:32,902 INFO L462 AbstractCegarLoop]: Abstraction has 1160 states and 1653 transitions. [2019-11-07 00:56:32,902 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-07 00:56:32,902 INFO L276 IsEmpty]: Start isEmpty. Operand 1160 states and 1653 transitions. [2019-11-07 00:56:32,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2019-11-07 00:56:32,910 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:56:32,911 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:56:32,911 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:56:32,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:56:32,911 INFO L82 PathProgramCache]: Analyzing trace with hash -866990585, now seen corresponding path program 1 times [2019-11-07 00:56:32,912 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:56:32,912 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052434734] [2019-11-07 00:56:32,912 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:56:33,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:56:33,423 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2019-11-07 00:56:33,424 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052434734] [2019-11-07 00:56:33,424 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281928594] [2019-11-07 00:56:33,424 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 00:56:34,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:56:34,154 INFO L256 TraceCheckSpWp]: Trace formula consists of 2991 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-07 00:56:34,182 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:56:34,569 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2019-11-07 00:56:34,570 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:56:35,167 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:56:35,259 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:56:35,346 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:56:35,522 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2019-11-07 00:56:35,523 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 00:56:35,523 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [21, 9] total 34 [2019-11-07 00:56:35,523 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448287802] [2019-11-07 00:56:35,524 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-07 00:56:35,525 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:56:35,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-07 00:56:35,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=1034, Unknown=0, NotChecked=0, Total=1122 [2019-11-07 00:56:35,526 INFO L87 Difference]: Start difference. First operand 1160 states and 1653 transitions. Second operand 9 states. [2019-11-07 00:56:37,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:56:37,495 INFO L93 Difference]: Finished difference Result 2298 states and 3286 transitions. [2019-11-07 00:56:37,496 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-07 00:56:37,496 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 269 [2019-11-07 00:56:37,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:56:37,506 INFO L225 Difference]: With dead ends: 2298 [2019-11-07 00:56:37,507 INFO L226 Difference]: Without dead ends: 1174 [2019-11-07 00:56:37,513 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 564 GetRequests, 525 SyntacticMatches, 4 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=109, Invalid=1223, Unknown=0, NotChecked=0, Total=1332 [2019-11-07 00:56:37,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1174 states. [2019-11-07 00:56:37,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1174 to 1174. [2019-11-07 00:56:37,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1174 states. [2019-11-07 00:56:37,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1174 states to 1174 states and 1671 transitions. [2019-11-07 00:56:37,585 INFO L78 Accepts]: Start accepts. Automaton has 1174 states and 1671 transitions. Word has length 269 [2019-11-07 00:56:37,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:56:37,586 INFO L462 AbstractCegarLoop]: Abstraction has 1174 states and 1671 transitions. [2019-11-07 00:56:37,586 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-07 00:56:37,586 INFO L276 IsEmpty]: Start isEmpty. Operand 1174 states and 1671 transitions. [2019-11-07 00:56:37,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2019-11-07 00:56:37,596 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:56:37,597 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:56:37,805 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:56:37,806 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:56:37,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:56:37,806 INFO L82 PathProgramCache]: Analyzing trace with hash 1787642265, now seen corresponding path program 1 times [2019-11-07 00:56:37,807 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:56:37,807 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696365686] [2019-11-07 00:56:37,808 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:56:37,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:56:38,384 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2019-11-07 00:56:38,384 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696365686] [2019-11-07 00:56:38,385 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053953686] [2019-11-07 00:56:38,385 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 00:56:39,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:56:39,216 INFO L256 TraceCheckSpWp]: Trace formula consists of 2992 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-07 00:56:39,233 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:56:39,480 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2019-11-07 00:56:39,481 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:56:40,200 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:56:40,311 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:56:40,489 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 24 proven. 3 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2019-11-07 00:56:40,489 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 00:56:40,490 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [21, 7] total 30 [2019-11-07 00:56:40,491 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546704111] [2019-11-07 00:56:40,493 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:56:40,495 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:56:40,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:56:40,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=796, Unknown=0, NotChecked=0, Total=870 [2019-11-07 00:56:40,496 INFO L87 Difference]: Start difference. First operand 1174 states and 1671 transitions. Second operand 7 states. [2019-11-07 00:56:41,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:56:41,735 INFO L93 Difference]: Finished difference Result 2301 states and 3295 transitions. [2019-11-07 00:56:41,735 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 00:56:41,735 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 270 [2019-11-07 00:56:41,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:56:41,743 INFO L225 Difference]: With dead ends: 2301 [2019-11-07 00:56:41,743 INFO L226 Difference]: Without dead ends: 1178 [2019-11-07 00:56:41,748 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 565 GetRequests, 532 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=88, Invalid=904, Unknown=0, NotChecked=0, Total=992 [2019-11-07 00:56:41,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1178 states. [2019-11-07 00:56:41,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1178 to 1178. [2019-11-07 00:56:41,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1178 states. [2019-11-07 00:56:41,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1178 states to 1178 states and 1676 transitions. [2019-11-07 00:56:41,810 INFO L78 Accepts]: Start accepts. Automaton has 1178 states and 1676 transitions. Word has length 270 [2019-11-07 00:56:41,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:56:41,811 INFO L462 AbstractCegarLoop]: Abstraction has 1178 states and 1676 transitions. [2019-11-07 00:56:41,811 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 00:56:41,811 INFO L276 IsEmpty]: Start isEmpty. Operand 1178 states and 1676 transitions. [2019-11-07 00:56:41,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2019-11-07 00:56:41,818 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:56:41,819 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:56:42,027 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:56:42,028 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:56:42,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:56:42,028 INFO L82 PathProgramCache]: Analyzing trace with hash -317122592, now seen corresponding path program 1 times [2019-11-07 00:56:42,028 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:56:42,029 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652229933] [2019-11-07 00:56:42,029 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:56:42,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:56:42,502 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2019-11-07 00:56:42,502 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652229933] [2019-11-07 00:56:42,503 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1911900636] [2019-11-07 00:56:42,503 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 00:56:43,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:56:43,328 INFO L256 TraceCheckSpWp]: Trace formula consists of 2993 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-07 00:56:43,336 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:56:43,588 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-11-07 00:56:43,588 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:56:44,090 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:56:44,196 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:56:44,282 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:56:44,477 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2019-11-07 00:56:44,478 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:56:44,478 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [21] total 35 [2019-11-07 00:56:44,478 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822075452] [2019-11-07 00:56:44,480 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-07 00:56:44,481 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:56:44,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-07 00:56:44,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=1093, Unknown=0, NotChecked=0, Total=1190 [2019-11-07 00:56:44,482 INFO L87 Difference]: Start difference. First operand 1178 states and 1676 transitions. Second operand 16 states. [2019-11-07 00:56:46,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:56:46,253 INFO L93 Difference]: Finished difference Result 2307 states and 3294 transitions. [2019-11-07 00:56:46,254 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-07 00:56:46,254 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 271 [2019-11-07 00:56:46,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:56:46,264 INFO L225 Difference]: With dead ends: 2307 [2019-11-07 00:56:46,264 INFO L226 Difference]: Without dead ends: 1190 [2019-11-07 00:56:46,272 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 569 GetRequests, 529 SyntacticMatches, 3 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=129, Invalid=1353, Unknown=0, NotChecked=0, Total=1482 [2019-11-07 00:56:46,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1190 states. [2019-11-07 00:56:46,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1190 to 1188. [2019-11-07 00:56:46,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1188 states. [2019-11-07 00:56:46,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1188 states to 1188 states and 1687 transitions. [2019-11-07 00:56:46,339 INFO L78 Accepts]: Start accepts. Automaton has 1188 states and 1687 transitions. Word has length 271 [2019-11-07 00:56:46,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:56:46,339 INFO L462 AbstractCegarLoop]: Abstraction has 1188 states and 1687 transitions. [2019-11-07 00:56:46,340 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-07 00:56:46,340 INFO L276 IsEmpty]: Start isEmpty. Operand 1188 states and 1687 transitions. [2019-11-07 00:56:46,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2019-11-07 00:56:46,346 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:56:46,347 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-11-07 00:56:46,554 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:56:46,554 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:56:46,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:56:46,555 INFO L82 PathProgramCache]: Analyzing trace with hash 1303858140, now seen corresponding path program 2 times [2019-11-07 00:56:46,555 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:56:46,555 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362433516] [2019-11-07 00:56:46,555 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:56:46,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:56:46,999 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2019-11-07 00:56:46,999 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362433516] [2019-11-07 00:56:46,999 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1260074197] [2019-11-07 00:56:47,000 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 00:56:47,708 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-11-07 00:56:47,708 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-07 00:56:47,715 INFO L256 TraceCheckSpWp]: Trace formula consists of 2331 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-07 00:56:47,721 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:56:47,928 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-11-07 00:56:47,928 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:56:48,430 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:56:48,509 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:56:48,603 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2019-11-07 00:56:48,603 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:56:48,603 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [21] total 31 [2019-11-07 00:56:48,603 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901723361] [2019-11-07 00:56:48,604 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-07 00:56:48,605 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:56:48,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-07 00:56:48,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=849, Unknown=0, NotChecked=0, Total=930 [2019-11-07 00:56:48,606 INFO L87 Difference]: Start difference. First operand 1188 states and 1687 transitions. Second operand 12 states. [2019-11-07 00:56:50,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:56:50,090 INFO L93 Difference]: Finished difference Result 2298 states and 3282 transitions. [2019-11-07 00:56:50,091 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-07 00:56:50,091 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 272 [2019-11-07 00:56:50,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:56:50,099 INFO L225 Difference]: With dead ends: 2298 [2019-11-07 00:56:50,099 INFO L226 Difference]: Without dead ends: 1190 [2019-11-07 00:56:50,104 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 570 GetRequests, 536 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=103, Invalid=1019, Unknown=0, NotChecked=0, Total=1122 [2019-11-07 00:56:50,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1190 states. [2019-11-07 00:56:50,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1190 to 1188. [2019-11-07 00:56:50,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1188 states. [2019-11-07 00:56:50,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1188 states to 1188 states and 1686 transitions. [2019-11-07 00:56:50,152 INFO L78 Accepts]: Start accepts. Automaton has 1188 states and 1686 transitions. Word has length 272 [2019-11-07 00:56:50,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:56:50,152 INFO L462 AbstractCegarLoop]: Abstraction has 1188 states and 1686 transitions. [2019-11-07 00:56:50,152 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-07 00:56:50,152 INFO L276 IsEmpty]: Start isEmpty. Operand 1188 states and 1686 transitions. [2019-11-07 00:56:50,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2019-11-07 00:56:50,160 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:56:50,161 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-11-07 00:56:50,369 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:56:50,369 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:56:50,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:56:50,370 INFO L82 PathProgramCache]: Analyzing trace with hash -1147644025, now seen corresponding path program 3 times [2019-11-07 00:56:50,370 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:56:50,370 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575622051] [2019-11-07 00:56:50,370 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:56:50,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:56:50,826 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2019-11-07 00:56:50,827 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575622051] [2019-11-07 00:56:50,827 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2107433478] [2019-11-07 00:56:50,827 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:56:51,468 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-07 00:56:51,468 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-07 00:56:51,476 INFO L256 TraceCheckSpWp]: Trace formula consists of 2345 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-07 00:56:51,487 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:56:51,701 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-11-07 00:56:51,702 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:56:52,195 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:56:52,286 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:56:52,396 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:56:52,601 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2019-11-07 00:56:52,601 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:56:52,602 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [21] total 34 [2019-11-07 00:56:52,602 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493975206] [2019-11-07 00:56:52,603 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-11-07 00:56:52,603 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:56:52,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-11-07 00:56:52,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=1034, Unknown=0, NotChecked=0, Total=1122 [2019-11-07 00:56:52,604 INFO L87 Difference]: Start difference. First operand 1188 states and 1686 transitions. Second operand 15 states. [2019-11-07 00:56:54,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:56:54,523 INFO L93 Difference]: Finished difference Result 2305 states and 3289 transitions. [2019-11-07 00:56:54,524 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-07 00:56:54,524 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 273 [2019-11-07 00:56:54,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:56:54,531 INFO L225 Difference]: With dead ends: 2305 [2019-11-07 00:56:54,532 INFO L226 Difference]: Without dead ends: 1192 [2019-11-07 00:56:54,536 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 573 GetRequests, 533 SyntacticMatches, 4 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=117, Invalid=1289, Unknown=0, NotChecked=0, Total=1406 [2019-11-07 00:56:54,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1192 states. [2019-11-07 00:56:54,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1192 to 1188. [2019-11-07 00:56:54,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1188 states. [2019-11-07 00:56:54,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1188 states to 1188 states and 1685 transitions. [2019-11-07 00:56:54,589 INFO L78 Accepts]: Start accepts. Automaton has 1188 states and 1685 transitions. Word has length 273 [2019-11-07 00:56:54,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:56:54,589 INFO L462 AbstractCegarLoop]: Abstraction has 1188 states and 1685 transitions. [2019-11-07 00:56:54,589 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-11-07 00:56:54,589 INFO L276 IsEmpty]: Start isEmpty. Operand 1188 states and 1685 transitions. [2019-11-07 00:56:54,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2019-11-07 00:56:54,597 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:56:54,597 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-11-07 00:56:54,813 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:56:54,813 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:56:54,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:56:54,814 INFO L82 PathProgramCache]: Analyzing trace with hash -1154209828, now seen corresponding path program 1 times [2019-11-07 00:56:54,814 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:56:54,815 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565810591] [2019-11-07 00:56:54,815 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:56:54,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:56:55,184 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2019-11-07 00:56:55,185 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565810591] [2019-11-07 00:56:55,185 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993267506] [2019-11-07 00:56:55,185 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 00:56:55,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:56:55,954 INFO L256 TraceCheckSpWp]: Trace formula consists of 2993 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-07 00:56:55,963 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:56:56,132 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-11-07 00:56:56,132 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:56:56,591 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:56:56,683 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:56:56,759 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2019-11-07 00:56:56,759 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:56:56,759 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [21] total 30 [2019-11-07 00:56:56,760 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845473752] [2019-11-07 00:56:56,761 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-07 00:56:56,761 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:56:56,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-07 00:56:56,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=796, Unknown=0, NotChecked=0, Total=870 [2019-11-07 00:56:56,762 INFO L87 Difference]: Start difference. First operand 1188 states and 1685 transitions. Second operand 11 states.