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_spec8_product33.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:17:33,002 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:17:33,005 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:17:33,024 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:17:33,024 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:17:33,026 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:17:33,028 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:17:33,038 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:17:33,042 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:17:33,047 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:17:33,048 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:17:33,050 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:17:33,050 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:17:33,052 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:17:33,055 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:17:33,057 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:17:33,058 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:17:33,059 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:17:33,061 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:17:33,066 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:17:33,071 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:17:33,074 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:17:33,077 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:17:33,078 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:17:33,080 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 01:17:33,080 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 01:17:33,081 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 01:17:33,082 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 01:17:33,084 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 01:17:33,085 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 01:17:33,085 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:17:33,086 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:17:33,087 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:17:33,087 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:17:33,089 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:17:33,089 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:17:33,090 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:17:33,091 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:17:33,091 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:17:33,092 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:17:33,095 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:17:33,096 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 01:17:33,127 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:17:33,127 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:17:33,128 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:17:33,128 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:17:33,129 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:17:33,129 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:17:33,129 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:17:33,129 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:17:33,130 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:17:33,130 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:17:33,130 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:17:33,130 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:17:33,130 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:17:33,131 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:17:33,131 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:17:33,131 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:17:33,131 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:17:33,131 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:17:33,132 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:17:33,132 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:17:33,132 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:17:33,132 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:17:33,132 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:17:33,133 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:17:33,133 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:17:33,133 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:17:33,133 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:17:33,133 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:17:33,134 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-15 01:17:33,424 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:17:33,441 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:17:33,445 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:17:33,446 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:17:33,447 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:17:33,448 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec8_product33.cil.c [2019-10-15 01:17:33,528 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/210f42a72/c9e4a11e7274430baa6faa9e03252874/FLAG74b4f05d9 [2019-10-15 01:17:34,107 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:17:34,108 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec8_product33.cil.c [2019-10-15 01:17:34,134 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/210f42a72/c9e4a11e7274430baa6faa9e03252874/FLAG74b4f05d9 [2019-10-15 01:17:34,337 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/210f42a72/c9e4a11e7274430baa6faa9e03252874 [2019-10-15 01:17:34,347 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:17:34,348 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:17:34,349 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:17:34,350 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:17:34,353 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:17:34,354 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:17:34" (1/1) ... [2019-10-15 01:17:34,357 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30f3d585 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:17:34, skipping insertion in model container [2019-10-15 01:17:34,357 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:17:34" (1/1) ... [2019-10-15 01:17:34,364 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:17:34,443 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:17:35,193 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:17:35,220 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:17:35,359 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:17:35,456 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:17:35,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:17:35 WrapperNode [2019-10-15 01:17:35,457 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:17:35,458 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:17:35,458 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:17:35,458 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:17:35,474 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:17:35" (1/1) ... [2019-10-15 01:17:35,474 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:17:35" (1/1) ... [2019-10-15 01:17:35,531 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:17:35" (1/1) ... [2019-10-15 01:17:35,532 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:17:35" (1/1) ... [2019-10-15 01:17:35,641 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:17:35" (1/1) ... [2019-10-15 01:17:35,680 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:17:35" (1/1) ... [2019-10-15 01:17:35,695 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:17:35" (1/1) ... [2019-10-15 01:17:35,713 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:17:35,716 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:17:35,716 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:17:35,717 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:17:35,719 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:17:35" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:17:35,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:17:35,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:17:35,799 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-15 01:17:35,799 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-15 01:17:35,800 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-15 01:17:35,801 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-15 01:17:35,801 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-15 01:17:35,802 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-15 01:17:35,802 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-15 01:17:35,803 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-15 01:17:35,803 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-15 01:17:35,804 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-15 01:17:35,804 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-15 01:17:35,805 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-15 01:17:35,805 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-15 01:17:35,806 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-15 01:17:35,808 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-15 01:17:35,808 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-15 01:17:35,808 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-15 01:17:35,809 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-15 01:17:35,809 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-15 01:17:35,809 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-15 01:17:35,809 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-15 01:17:35,809 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-15 01:17:35,810 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-15 01:17:35,810 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-15 01:17:35,810 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-15 01:17:35,810 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-15 01:17:35,811 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-15 01:17:35,811 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-15 01:17:35,811 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-15 01:17:35,811 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-15 01:17:35,812 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-15 01:17:35,812 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-15 01:17:35,812 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-15 01:17:35,813 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-15 01:17:35,813 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-15 01:17:35,813 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-15 01:17:35,813 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-15 01:17:35,814 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-15 01:17:35,814 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-15 01:17:35,814 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__AutoResponder [2019-10-15 01:17:35,814 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Forward [2019-10-15 01:17:35,814 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-15 01:17:35,815 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-10-15 01:17:35,815 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-15 01:17:35,815 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-15 01:17:35,815 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-15 01:17:35,815 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptAutoResponder_spec__1 [2019-10-15 01:17:35,815 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__EncryptAutoResponder_spec__2 [2019-10-15 01:17:35,816 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-15 01:17:35,816 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-15 01:17:35,816 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-15 01:17:35,816 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-15 01:17:35,816 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-15 01:17:35,816 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-15 01:17:35,817 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-15 01:17:35,817 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-15 01:17:35,817 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-15 01:17:35,817 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-15 01:17:35,817 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:17:35,817 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-15 01:17:35,818 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-15 01:17:35,818 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-15 01:17:35,818 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-15 01:17:35,819 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-15 01:17:35,819 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-15 01:17:35,819 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-15 01:17:35,819 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-15 01:17:35,820 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-15 01:17:35,820 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhSetAutoRespond [2019-10-15 01:17:35,820 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhEnableForwarding [2019-10-15 01:17:35,820 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-15 01:17:35,821 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-15 01:17:35,822 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-15 01:17:35,822 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-15 01:17:35,822 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-15 01:17:35,822 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-15 01:17:35,822 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2019-10-15 01:17:35,823 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-15 01:17:35,823 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-15 01:17:35,823 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Encrypt [2019-10-15 01:17:35,824 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-10-15 01:17:35,824 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Forward [2019-10-15 01:17:35,824 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Verify [2019-10-15 01:17:35,825 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-15 01:17:35,825 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-15 01:17:35,826 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-15 01:17:35,826 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-15 01:17:35,826 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-15 01:17:35,826 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-15 01:17:35,826 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-15 01:17:35,827 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-15 01:17:35,827 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-15 01:17:35,827 INFO L138 BoogieDeclarations]: Found implementation of procedure autoRespond [2019-10-15 01:17:35,827 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-10-15 01:17:35,827 INFO L138 BoogieDeclarations]: Found implementation of procedure forward [2019-10-15 01:17:35,827 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-10-15 01:17:35,828 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-15 01:17:35,828 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-15 01:17:35,828 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-15 01:17:35,828 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-15 01:17:35,828 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-15 01:17:35,828 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-15 01:17:35,828 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-15 01:17:35,829 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-15 01:17:35,829 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-15 01:17:35,829 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-15 01:17:35,829 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-15 01:17:35,829 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-15 01:17:35,829 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-15 01:17:35,829 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-15 01:17:35,830 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-15 01:17:35,830 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-15 01:17:35,830 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-15 01:17:35,830 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-15 01:17:35,830 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-15 01:17:35,830 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-15 01:17:35,831 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-15 01:17:35,831 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:17:35,832 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:17:35,832 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-15 01:17:35,832 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 01:17:35,832 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 01:17:35,833 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-15 01:17:35,833 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 01:17:35,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 01:17:35,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-15 01:17:35,834 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 01:17:35,834 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-15 01:17:35,834 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 01:17:35,834 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-15 01:17:35,835 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-15 01:17:35,835 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-15 01:17:35,835 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-15 01:17:35,836 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-15 01:17:35,836 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 01:17:35,840 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-15 01:17:35,840 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-15 01:17:35,840 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-15 01:17:35,841 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-15 01:17:35,841 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-15 01:17:35,841 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-15 01:17:35,842 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-15 01:17:35,848 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-15 01:17:35,848 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-15 01:17:35,849 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-15 01:17:35,849 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-15 01:17:35,849 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-15 01:17:35,850 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-15 01:17:35,850 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-15 01:17:35,850 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-15 01:17:35,850 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-15 01:17:35,850 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-15 01:17:35,850 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-15 01:17:35,850 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-15 01:17:35,851 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-15 01:17:35,851 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-15 01:17:35,851 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-15 01:17:35,851 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-15 01:17:35,851 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-15 01:17:35,851 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-15 01:17:35,851 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-15 01:17:35,852 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-15 01:17:35,852 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-15 01:17:35,852 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-15 01:17:35,852 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-15 01:17:35,852 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-15 01:17:35,852 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-15 01:17:35,853 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-15 01:17:35,853 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-15 01:17:35,853 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-15 01:17:35,853 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-15 01:17:35,853 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-15 01:17:35,853 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-15 01:17:35,854 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-15 01:17:35,854 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-15 01:17:35,854 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-15 01:17:35,854 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-15 01:17:35,854 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-15 01:17:35,854 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-15 01:17:35,855 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-15 01:17:35,855 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-15 01:17:35,855 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-15 01:17:35,855 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-15 01:17:35,855 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__AutoResponder [2019-10-15 01:17:35,856 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Forward [2019-10-15 01:17:35,856 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-10-15 01:17:35,856 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-15 01:17:35,856 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptAutoResponder_spec__1 [2019-10-15 01:17:35,857 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__EncryptAutoResponder_spec__2 [2019-10-15 01:17:35,857 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-15 01:17:35,857 INFO L130 BoogieDeclarations]: Found specification of procedure rjhSetAutoRespond [2019-10-15 01:17:35,857 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-15 01:17:35,857 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-15 01:17:35,857 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-15 01:17:35,858 INFO L130 BoogieDeclarations]: Found specification of procedure rjhEnableForwarding [2019-10-15 01:17:35,858 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-15 01:17:35,858 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-15 01:17:35,858 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-15 01:17:35,858 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-15 01:17:35,858 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-15 01:17:35,859 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-15 01:17:35,859 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-15 01:17:35,859 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-15 01:17:35,859 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-15 01:17:35,859 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-15 01:17:35,859 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-15 01:17:35,860 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-15 01:17:35,860 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-15 01:17:35,860 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-15 01:17:35,860 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-15 01:17:35,860 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-15 01:17:35,860 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-15 01:17:35,860 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-15 01:17:35,861 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-15 01:17:35,861 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:17:35,861 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-15 01:17:35,861 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-15 01:17:35,861 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-15 01:17:35,861 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-15 01:17:35,862 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-15 01:17:35,862 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-15 01:17:35,862 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-15 01:17:35,862 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-15 01:17:35,862 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-15 01:17:35,862 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-15 01:17:35,863 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-15 01:17:35,863 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-15 01:17:35,863 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-15 01:17:35,863 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-15 01:17:35,863 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-15 01:17:35,863 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-15 01:17:35,864 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-15 01:17:35,864 INFO L130 BoogieDeclarations]: Found specification of procedure autoRespond [2019-10-15 01:17:35,864 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-10-15 01:17:35,864 INFO L130 BoogieDeclarations]: Found specification of procedure forward [2019-10-15 01:17:35,864 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-10-15 01:17:35,864 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-15 01:17:35,865 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2019-10-15 01:17:35,865 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Encrypt [2019-10-15 01:17:35,865 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-10-15 01:17:35,865 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Forward [2019-10-15 01:17:35,865 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Verify [2019-10-15 01:17:35,866 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-15 01:17:35,866 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-15 01:17:35,866 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-15 01:17:35,866 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-15 01:17:35,866 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-15 01:17:35,866 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-15 01:17:35,867 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:17:35,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-15 01:17:35,867 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:17:38,148 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:17:38,149 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-15 01:17:38,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:17:38 BoogieIcfgContainer [2019-10-15 01:17:38,155 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:17:38,156 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:17:38,157 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:17:38,160 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:17:38,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:17:34" (1/3) ... [2019-10-15 01:17:38,162 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4536d578 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:17:38, skipping insertion in model container [2019-10-15 01:17:38,163 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:17:35" (2/3) ... [2019-10-15 01:17:38,165 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4536d578 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:17:38, skipping insertion in model container [2019-10-15 01:17:38,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:17:38" (3/3) ... [2019-10-15 01:17:38,171 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec8_product33.cil.c [2019-10-15 01:17:38,184 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:17:38,196 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:17:38,208 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:17:38,243 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:17:38,243 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:17:38,243 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:17:38,244 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:17:38,244 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:17:38,244 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:17:38,244 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:17:38,244 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:17:38,281 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states. [2019-10-15 01:17:38,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2019-10-15 01:17:38,315 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:17:38,317 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:17:38,319 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:17:38,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:17:38,327 INFO L82 PathProgramCache]: Analyzing trace with hash 1670236662, now seen corresponding path program 1 times [2019-10-15 01:17:38,338 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:17:38,338 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200217821] [2019-10-15 01:17:38,339 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:38,339 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:38,339 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:17:38,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:17:39,048 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-15 01:17:39,049 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200217821] [2019-10-15 01:17:39,050 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:17:39,051 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 01:17:39,051 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663094598] [2019-10-15 01:17:39,058 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 01:17:39,060 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:17:39,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 01:17:39,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:17:39,080 INFO L87 Difference]: Start difference. First operand 594 states. Second operand 2 states. [2019-10-15 01:17:39,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:17:39,230 INFO L93 Difference]: Finished difference Result 919 states and 1204 transitions. [2019-10-15 01:17:39,230 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 01:17:39,234 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 158 [2019-10-15 01:17:39,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:17:39,281 INFO L225 Difference]: With dead ends: 919 [2019-10-15 01:17:39,282 INFO L226 Difference]: Without dead ends: 571 [2019-10-15 01:17:39,295 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:17:39,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2019-10-15 01:17:39,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 571. [2019-10-15 01:17:39,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2019-10-15 01:17:39,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 753 transitions. [2019-10-15 01:17:39,453 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 753 transitions. Word has length 158 [2019-10-15 01:17:39,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:17:39,458 INFO L462 AbstractCegarLoop]: Abstraction has 571 states and 753 transitions. [2019-10-15 01:17:39,458 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 01:17:39,458 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 753 transitions. [2019-10-15 01:17:39,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2019-10-15 01:17:39,464 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:17:39,464 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:17:39,465 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:17:39,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:17:39,465 INFO L82 PathProgramCache]: Analyzing trace with hash -1950796631, now seen corresponding path program 1 times [2019-10-15 01:17:39,465 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:17:39,466 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767742841] [2019-10-15 01:17:39,466 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:39,466 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:39,466 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:17:39,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:17:39,697 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-15 01:17:39,697 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767742841] [2019-10-15 01:17:39,698 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:17:39,698 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:17:39,698 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796312218] [2019-10-15 01:17:39,702 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:17:39,703 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:17:39,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:17:39,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:17:39,703 INFO L87 Difference]: Start difference. First operand 571 states and 753 transitions. Second operand 3 states. [2019-10-15 01:17:39,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:17:39,790 INFO L93 Difference]: Finished difference Result 902 states and 1172 transitions. [2019-10-15 01:17:39,790 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:17:39,790 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 159 [2019-10-15 01:17:39,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:17:39,798 INFO L225 Difference]: With dead ends: 902 [2019-10-15 01:17:39,799 INFO L226 Difference]: Without dead ends: 574 [2019-10-15 01:17:39,802 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:17:39,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2019-10-15 01:17:39,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 573. [2019-10-15 01:17:39,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 573 states. [2019-10-15 01:17:39,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 755 transitions. [2019-10-15 01:17:39,850 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 755 transitions. Word has length 159 [2019-10-15 01:17:39,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:17:39,851 INFO L462 AbstractCegarLoop]: Abstraction has 573 states and 755 transitions. [2019-10-15 01:17:39,851 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:17:39,851 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 755 transitions. [2019-10-15 01:17:39,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2019-10-15 01:17:39,855 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:17:39,855 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:17:39,856 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:17:39,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:17:39,856 INFO L82 PathProgramCache]: Analyzing trace with hash 1182028890, now seen corresponding path program 1 times [2019-10-15 01:17:39,856 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:17:39,857 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2117964469] [2019-10-15 01:17:39,857 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:39,857 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:39,857 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:17:39,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:17:40,099 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-15 01:17:40,100 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2117964469] [2019-10-15 01:17:40,100 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:17:40,100 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:17:40,101 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012015812] [2019-10-15 01:17:40,101 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:17:40,104 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:17:40,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:17:40,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:17:40,105 INFO L87 Difference]: Start difference. First operand 573 states and 755 transitions. Second operand 3 states. [2019-10-15 01:17:40,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:17:40,164 INFO L93 Difference]: Finished difference Result 1124 states and 1511 transitions. [2019-10-15 01:17:40,164 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:17:40,165 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 171 [2019-10-15 01:17:40,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:17:40,176 INFO L225 Difference]: With dead ends: 1124 [2019-10-15 01:17:40,177 INFO L226 Difference]: Without dead ends: 616 [2019-10-15 01:17:40,180 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:17:40,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2019-10-15 01:17:40,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 615. [2019-10-15 01:17:40,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 615 states. [2019-10-15 01:17:40,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 827 transitions. [2019-10-15 01:17:40,231 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 827 transitions. Word has length 171 [2019-10-15 01:17:40,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:17:40,232 INFO L462 AbstractCegarLoop]: Abstraction has 615 states and 827 transitions. [2019-10-15 01:17:40,232 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:17:40,233 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 827 transitions. [2019-10-15 01:17:40,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2019-10-15 01:17:40,243 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:17:40,244 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:17:40,244 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:17:40,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:17:40,247 INFO L82 PathProgramCache]: Analyzing trace with hash 903691461, now seen corresponding path program 1 times [2019-10-15 01:17:40,248 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:17:40,248 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036004062] [2019-10-15 01:17:40,248 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:40,249 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:40,249 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:17:40,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:17:40,605 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-15 01:17:40,605 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036004062] [2019-10-15 01:17:40,606 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:17:40,606 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:17:40,606 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935783351] [2019-10-15 01:17:40,607 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:17:40,608 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:17:40,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:17:40,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:17:40,608 INFO L87 Difference]: Start difference. First operand 615 states and 827 transitions. Second operand 3 states. [2019-10-15 01:17:40,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:17:40,654 INFO L93 Difference]: Finished difference Result 1247 states and 1722 transitions. [2019-10-15 01:17:40,655 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:17:40,655 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 172 [2019-10-15 01:17:40,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:17:40,661 INFO L225 Difference]: With dead ends: 1247 [2019-10-15 01:17:40,661 INFO L226 Difference]: Without dead ends: 697 [2019-10-15 01:17:40,664 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:17:40,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2019-10-15 01:17:40,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 696. [2019-10-15 01:17:40,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 696 states. [2019-10-15 01:17:40,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 965 transitions. [2019-10-15 01:17:40,703 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 965 transitions. Word has length 172 [2019-10-15 01:17:40,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:17:40,704 INFO L462 AbstractCegarLoop]: Abstraction has 696 states and 965 transitions. [2019-10-15 01:17:40,704 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:17:40,704 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 965 transitions. [2019-10-15 01:17:40,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2019-10-15 01:17:40,708 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:17:40,709 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:17:40,709 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:17:40,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:17:40,709 INFO L82 PathProgramCache]: Analyzing trace with hash 1072559962, now seen corresponding path program 1 times [2019-10-15 01:17:40,710 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:17:40,710 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126949841] [2019-10-15 01:17:40,710 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:40,711 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:40,711 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:17:40,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:17:40,886 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2019-10-15 01:17:40,886 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126949841] [2019-10-15 01:17:40,887 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:17:40,887 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:17:40,887 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295949465] [2019-10-15 01:17:40,888 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:17:40,888 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:17:40,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:17:40,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:17:40,889 INFO L87 Difference]: Start difference. First operand 696 states and 965 transitions. Second operand 3 states. [2019-10-15 01:17:40,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:17:40,936 INFO L93 Difference]: Finished difference Result 1484 states and 2126 transitions. [2019-10-15 01:17:40,936 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:17:40,937 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 173 [2019-10-15 01:17:40,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:17:40,943 INFO L225 Difference]: With dead ends: 1484 [2019-10-15 01:17:40,943 INFO L226 Difference]: Without dead ends: 853 [2019-10-15 01:17:40,946 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:17:40,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 853 states. [2019-10-15 01:17:40,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 853 to 852. [2019-10-15 01:17:40,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 852 states. [2019-10-15 01:17:40,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 1229 transitions. [2019-10-15 01:17:40,986 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 1229 transitions. Word has length 173 [2019-10-15 01:17:40,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:17:40,986 INFO L462 AbstractCegarLoop]: Abstraction has 852 states and 1229 transitions. [2019-10-15 01:17:40,986 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:17:40,987 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 1229 transitions. [2019-10-15 01:17:40,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2019-10-15 01:17:40,992 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:17:40,992 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:17:40,992 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:17:40,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:17:40,993 INFO L82 PathProgramCache]: Analyzing trace with hash 1649882840, now seen corresponding path program 1 times [2019-10-15 01:17:40,993 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:17:40,993 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89990480] [2019-10-15 01:17:40,993 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:40,993 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:40,993 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:17:41,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:17:41,235 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-15 01:17:41,236 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89990480] [2019-10-15 01:17:41,236 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:17:41,236 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:17:41,236 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864575604] [2019-10-15 01:17:41,237 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:17:41,237 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:17:41,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:17:41,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:17:41,238 INFO L87 Difference]: Start difference. First operand 852 states and 1229 transitions. Second operand 3 states. [2019-10-15 01:17:41,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:17:41,281 INFO L93 Difference]: Finished difference Result 1271 states and 1777 transitions. [2019-10-15 01:17:41,281 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:17:41,281 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 175 [2019-10-15 01:17:41,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:17:41,287 INFO L225 Difference]: With dead ends: 1271 [2019-10-15 01:17:41,288 INFO L226 Difference]: Without dead ends: 945 [2019-10-15 01:17:41,289 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:17:41,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 945 states. [2019-10-15 01:17:41,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 945 to 945. [2019-10-15 01:17:41,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 945 states. [2019-10-15 01:17:41,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 945 states to 945 states and 1352 transitions. [2019-10-15 01:17:41,334 INFO L78 Accepts]: Start accepts. Automaton has 945 states and 1352 transitions. Word has length 175 [2019-10-15 01:17:41,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:17:41,335 INFO L462 AbstractCegarLoop]: Abstraction has 945 states and 1352 transitions. [2019-10-15 01:17:41,335 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:17:41,336 INFO L276 IsEmpty]: Start isEmpty. Operand 945 states and 1352 transitions. [2019-10-15 01:17:41,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2019-10-15 01:17:41,344 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:17:41,345 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:17:41,345 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:17:41,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:17:41,346 INFO L82 PathProgramCache]: Analyzing trace with hash -701347322, now seen corresponding path program 1 times [2019-10-15 01:17:41,346 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:17:41,346 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525142065] [2019-10-15 01:17:41,347 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:41,347 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:41,347 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:17:41,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:17:42,100 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 22 proven. 11 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2019-10-15 01:17:42,101 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525142065] [2019-10-15 01:17:42,101 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2044496479] [2019-10-15 01:17:42,102 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:17:42,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:17:42,935 INFO L256 TraceCheckSpWp]: Trace formula consists of 3614 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:17:42,962 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:17:43,406 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2019-10-15 01:17:43,407 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:17:44,213 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:17:44,316 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:17:44,410 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:17:44,616 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 22 proven. 3 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2019-10-15 01:17:44,616 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:17:44,617 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [22, 9] total 35 [2019-10-15 01:17:44,617 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646528518] [2019-10-15 01:17:44,620 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 01:17:44,620 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:17:44,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 01:17:44,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1100, Unknown=0, NotChecked=0, Total=1190 [2019-10-15 01:17:44,623 INFO L87 Difference]: Start difference. First operand 945 states and 1352 transitions. Second operand 9 states. [2019-10-15 01:17:47,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:17:47,215 INFO L93 Difference]: Finished difference Result 1868 states and 2684 transitions. [2019-10-15 01:17:47,216 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-15 01:17:47,216 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 329 [2019-10-15 01:17:47,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:17:47,225 INFO L225 Difference]: With dead ends: 1868 [2019-10-15 01:17:47,225 INFO L226 Difference]: Without dead ends: 959 [2019-10-15 01:17:47,233 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 687 GetRequests, 647 SyntacticMatches, 4 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=111, Invalid=1295, Unknown=0, NotChecked=0, Total=1406 [2019-10-15 01:17:47,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2019-10-15 01:17:47,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 959. [2019-10-15 01:17:47,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 959 states. [2019-10-15 01:17:47,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 959 states to 959 states and 1370 transitions. [2019-10-15 01:17:47,316 INFO L78 Accepts]: Start accepts. Automaton has 959 states and 1370 transitions. Word has length 329 [2019-10-15 01:17:47,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:17:47,316 INFO L462 AbstractCegarLoop]: Abstraction has 959 states and 1370 transitions. [2019-10-15 01:17:47,316 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-15 01:17:47,317 INFO L276 IsEmpty]: Start isEmpty. Operand 959 states and 1370 transitions. [2019-10-15 01:17:47,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2019-10-15 01:17:47,330 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:17:47,331 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:17:47,554 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:17:47,554 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:17:47,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:17:47,555 INFO L82 PathProgramCache]: Analyzing trace with hash 650552446, now seen corresponding path program 1 times [2019-10-15 01:17:47,555 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:17:47,555 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078028858] [2019-10-15 01:17:47,555 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:47,556 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:47,556 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:17:47,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:17:48,445 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 22 proven. 11 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2019-10-15 01:17:48,446 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078028858] [2019-10-15 01:17:48,446 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84140045] [2019-10-15 01:17:48,447 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:17:49,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:17:49,224 INFO L256 TraceCheckSpWp]: Trace formula consists of 3615 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 01:17:49,235 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:17:49,474 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2019-10-15 01:17:49,474 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:17:50,141 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:17:50,217 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:17:50,355 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 22 proven. 3 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2019-10-15 01:17:50,355 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:17:50,355 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [22, 7] total 31 [2019-10-15 01:17:50,356 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430597161] [2019-10-15 01:17:50,357 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-15 01:17:50,357 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:17:50,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-15 01:17:50,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=854, Unknown=0, NotChecked=0, Total=930 [2019-10-15 01:17:50,358 INFO L87 Difference]: Start difference. First operand 959 states and 1370 transitions. Second operand 7 states. [2019-10-15 01:17:51,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:17:51,595 INFO L93 Difference]: Finished difference Result 1869 states and 2690 transitions. [2019-10-15 01:17:51,595 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:17:51,595 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 330 [2019-10-15 01:17:51,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:17:51,601 INFO L225 Difference]: With dead ends: 1869 [2019-10-15 01:17:51,601 INFO L226 Difference]: Without dead ends: 961 [2019-10-15 01:17:51,605 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 688 GetRequests, 654 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=90, Invalid=966, Unknown=0, NotChecked=0, Total=1056 [2019-10-15 01:17:51,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 961 states. [2019-10-15 01:17:51,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 961 to 961. [2019-10-15 01:17:51,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 961 states. [2019-10-15 01:17:51,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 961 states to 961 states and 1373 transitions. [2019-10-15 01:17:51,652 INFO L78 Accepts]: Start accepts. Automaton has 961 states and 1373 transitions. Word has length 330 [2019-10-15 01:17:51,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:17:51,653 INFO L462 AbstractCegarLoop]: Abstraction has 961 states and 1373 transitions. [2019-10-15 01:17:51,653 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-15 01:17:51,653 INFO L276 IsEmpty]: Start isEmpty. Operand 961 states and 1373 transitions. [2019-10-15 01:17:51,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2019-10-15 01:17:51,661 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:17:51,662 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:17:51,863 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:17:51,864 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:17:51,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:17:51,865 INFO L82 PathProgramCache]: Analyzing trace with hash -2102142516, now seen corresponding path program 1 times [2019-10-15 01:17:51,865 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:17:51,865 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904660451] [2019-10-15 01:17:51,866 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:51,866 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:51,867 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:17:51,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:17:52,394 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 22 proven. 11 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2019-10-15 01:17:52,394 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904660451] [2019-10-15 01:17:52,395 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1702433479] [2019-10-15 01:17:52,395 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:17:53,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:17:53,503 INFO L256 TraceCheckSpWp]: Trace formula consists of 3616 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:17:53,515 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:17:53,819 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-10-15 01:17:53,819 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:17:54,535 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:17:54,630 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:17:54,732 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:17:54,952 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2019-10-15 01:17:54,952 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:17:54,953 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [22] total 36 [2019-10-15 01:17:54,953 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197768265] [2019-10-15 01:17:54,954 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-15 01:17:54,955 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:17:54,955 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-15 01:17:54,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=1161, Unknown=0, NotChecked=0, Total=1260 [2019-10-15 01:17:54,956 INFO L87 Difference]: Start difference. First operand 961 states and 1373 transitions. Second operand 16 states. [2019-10-15 01:17:57,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:17:57,710 INFO L93 Difference]: Finished difference Result 1873 states and 2688 transitions. [2019-10-15 01:17:57,710 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-15 01:17:57,710 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 331 [2019-10-15 01:17:57,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:17:57,718 INFO L225 Difference]: With dead ends: 1873 [2019-10-15 01:17:57,718 INFO L226 Difference]: Without dead ends: 973 [2019-10-15 01:17:57,722 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 692 GetRequests, 651 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=131, Invalid=1429, Unknown=0, NotChecked=0, Total=1560 [2019-10-15 01:17:57,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 973 states. [2019-10-15 01:17:57,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 973 to 971. [2019-10-15 01:17:57,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 971 states. [2019-10-15 01:17:57,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1384 transitions. [2019-10-15 01:17:57,765 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1384 transitions. Word has length 331 [2019-10-15 01:17:57,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:17:57,766 INFO L462 AbstractCegarLoop]: Abstraction has 971 states and 1384 transitions. [2019-10-15 01:17:57,766 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-15 01:17:57,766 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1384 transitions. [2019-10-15 01:17:57,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2019-10-15 01:17:57,774 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:17:57,774 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:17:57,984 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:17:57,988 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:17:57,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:17:57,988 INFO L82 PathProgramCache]: Analyzing trace with hash -20213600, now seen corresponding path program 2 times [2019-10-15 01:17:57,988 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:17:57,988 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533956381] [2019-10-15 01:17:57,989 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:57,989 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:17:57,989 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:17:58,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:17:58,624 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 22 proven. 11 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2019-10-15 01:17:58,625 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533956381] [2019-10-15 01:17:58,625 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1323540391] [2019-10-15 01:17:58,625 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:17:59,363 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-10-15 01:17:59,363 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-15 01:17:59,372 INFO L256 TraceCheckSpWp]: Trace formula consists of 2519 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-15 01:17:59,382 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:17:59,675 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-10-15 01:17:59,676 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:18:00,467 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:18:00,535 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:18:00,648 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2019-10-15 01:18:00,648 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:18:00,649 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [22] total 32 [2019-10-15 01:18:00,649 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064522974] [2019-10-15 01:18:00,650 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-15 01:18:00,651 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:18:00,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-15 01:18:00,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=909, Unknown=0, NotChecked=0, Total=992 [2019-10-15 01:18:00,652 INFO L87 Difference]: Start difference. First operand 971 states and 1384 transitions. Second operand 12 states. [2019-10-15 01:18:02,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:18:02,708 INFO L93 Difference]: Finished difference Result 1864 states and 2676 transitions. [2019-10-15 01:18:02,709 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-15 01:18:02,709 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 332 [2019-10-15 01:18:02,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:18:02,715 INFO L225 Difference]: With dead ends: 1864 [2019-10-15 01:18:02,716 INFO L226 Difference]: Without dead ends: 973 [2019-10-15 01:18:02,720 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 693 GetRequests, 658 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=105, Invalid=1085, Unknown=0, NotChecked=0, Total=1190 [2019-10-15 01:18:02,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 973 states. [2019-10-15 01:18:02,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 973 to 971. [2019-10-15 01:18:02,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 971 states. [2019-10-15 01:18:02,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1383 transitions. [2019-10-15 01:18:02,765 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1383 transitions. Word has length 332 [2019-10-15 01:18:02,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:18:02,766 INFO L462 AbstractCegarLoop]: Abstraction has 971 states and 1383 transitions. [2019-10-15 01:18:02,766 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-15 01:18:02,766 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1383 transitions. [2019-10-15 01:18:02,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2019-10-15 01:18:02,776 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:18:02,776 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:18:02,997 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:18:02,997 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:18:02,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:18:02,998 INFO L82 PathProgramCache]: Analyzing trace with hash -1496141744, now seen corresponding path program 3 times [2019-10-15 01:18:02,998 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:18:02,998 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556816205] [2019-10-15 01:18:02,998 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:02,999 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:18:02,999 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:18:03,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:18:03,489 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 22 proven. 11 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2019-10-15 01:18:03,489 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556816205] [2019-10-15 01:18:03,490 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356681497] [2019-10-15 01:18:03,490 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:18:04,258 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-15 01:18:04,258 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-15 01:18:04,264 INFO L256 TraceCheckSpWp]: Trace formula consists of 2936 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-15 01:18:04,272 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:18:04,492 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-10-15 01:18:04,492 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:18:05,185 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:18:05,288 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:18:05,405 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-15 01:18:05,627 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2019-10-15 01:18:05,627 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:18:05,628 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [22] total 35 [2019-10-15 01:18:05,628 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60750937] [2019-10-15 01:18:05,629 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-15 01:18:05,629 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:18:05,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-15 01:18:05,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1100, Unknown=0, NotChecked=0, Total=1190 [2019-10-15 01:18:05,630 INFO L87 Difference]: Start difference. First operand 971 states and 1383 transitions. Second operand 15 states.