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_spec3_product31.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 21:15:53,000 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 21:15:53,002 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 21:15:53,020 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 21:15:53,020 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 21:15:53,022 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 21:15:53,024 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 21:15:53,033 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 21:15:53,037 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 21:15:53,041 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 21:15:53,042 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 21:15:53,044 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 21:15:53,044 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 21:15:53,046 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 21:15:53,048 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 21:15:53,049 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 21:15:53,050 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 21:15:53,052 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 21:15:53,054 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 21:15:53,058 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 21:15:53,062 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 21:15:53,065 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 21:15:53,067 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 21:15:53,068 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 21:15:53,070 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 21:15:53,070 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 21:15:53,070 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 21:15:53,072 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 21:15:53,073 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 21:15:53,074 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 21:15:53,074 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 21:15:53,076 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 21:15:53,077 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 21:15:53,078 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 21:15:53,079 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 21:15:53,080 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 21:15:53,080 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 21:15:53,080 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 21:15:53,081 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 21:15:53,081 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 21:15:53,083 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 21:15:53,083 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 [2019-10-13 21:15:53,116 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 21:15:53,118 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 21:15:53,119 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 21:15:53,119 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 21:15:53,122 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 21:15:53,122 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 21:15:53,122 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 21:15:53,123 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 21:15:53,123 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 21:15:53,123 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 21:15:53,123 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 21:15:53,123 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 21:15:53,124 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 21:15:53,124 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 21:15:53,124 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 21:15:53,125 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 21:15:53,125 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 21:15:53,126 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 21:15:53,126 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 21:15:53,126 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 21:15:53,126 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 21:15:53,126 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 21:15:53,127 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 21:15:53,127 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 21:15:53,127 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 21:15:53,127 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 21:15:53,127 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 21:15:53,128 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 21:15:53,128 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 [2019-10-13 21:15:53,411 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 21:15:53,424 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 21:15:53,427 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 21:15:53,429 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 21:15:53,429 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 21:15:53,430 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec3_product31.cil.c [2019-10-13 21:15:53,509 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cdcca3864/437042a1f7d8459d955e0b4b14996cd4/FLAG96baab8f7 [2019-10-13 21:15:54,129 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 21:15:54,130 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec3_product31.cil.c [2019-10-13 21:15:54,150 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cdcca3864/437042a1f7d8459d955e0b4b14996cd4/FLAG96baab8f7 [2019-10-13 21:15:54,330 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cdcca3864/437042a1f7d8459d955e0b4b14996cd4 [2019-10-13 21:15:54,339 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 21:15:54,341 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 21:15:54,342 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 21:15:54,342 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 21:15:54,347 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 21:15:54,348 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:15:54" (1/1) ... [2019-10-13 21:15:54,350 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7492c7de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:54, skipping insertion in model container [2019-10-13 21:15:54,350 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 09:15:54" (1/1) ... [2019-10-13 21:15:54,358 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 21:15:54,434 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 21:15:55,260 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:15:55,288 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 21:15:55,412 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 21:15:55,519 INFO L192 MainTranslator]: Completed translation [2019-10-13 21:15:55,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:55 WrapperNode [2019-10-13 21:15:55,519 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 21:15:55,520 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 21:15:55,520 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 21:15:55,521 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 21:15:55,537 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:55" (1/1) ... [2019-10-13 21:15:55,537 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:55" (1/1) ... [2019-10-13 21:15:55,586 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:55" (1/1) ... [2019-10-13 21:15:55,587 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:55" (1/1) ... [2019-10-13 21:15:55,666 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:55" (1/1) ... [2019-10-13 21:15:55,685 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:55" (1/1) ... [2019-10-13 21:15:55,705 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:55" (1/1) ... [2019-10-13 21:15:55,724 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 21:15:55,725 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 21:15:55,725 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 21:15:55,725 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 21:15:55,726 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:55" (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 [2019-10-13 21:15:55,807 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 21:15:55,807 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 21:15:55,807 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-10-13 21:15:55,808 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-10-13 21:15:55,808 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-10-13 21:15:55,809 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-10-13 21:15:55,809 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-10-13 21:15:55,809 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-10-13 21:15:55,809 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-10-13 21:15:55,810 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-10-13 21:15:55,810 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-10-13 21:15:55,810 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-10-13 21:15:55,810 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-10-13 21:15:55,811 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-10-13 21:15:55,811 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-10-13 21:15:55,812 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-10-13 21:15:55,814 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-10-13 21:15:55,814 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-10-13 21:15:55,814 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-10-13 21:15:55,815 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-10-13 21:15:55,815 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-10-13 21:15:55,815 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-10-13 21:15:55,815 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-10-13 21:15:55,815 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-10-13 21:15:55,815 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-10-13 21:15:55,816 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-10-13 21:15:55,816 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-10-13 21:15:55,816 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-10-13 21:15:55,816 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-10-13 21:15:55,817 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-10-13 21:15:55,818 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-10-13 21:15:55,818 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-10-13 21:15:55,818 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-10-13 21:15:55,818 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-10-13 21:15:55,818 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-10-13 21:15:55,819 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-10-13 21:15:55,819 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-10-13 21:15:55,819 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-10-13 21:15:55,819 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-10-13 21:15:55,820 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-10-13 21:15:55,820 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-10-13 21:15:55,820 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 21:15:55,820 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-10-13 21:15:55,820 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-10-13 21:15:55,820 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-10-13 21:15:55,820 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-10-13 21:15:55,821 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-10-13 21:15:55,821 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-10-13 21:15:55,821 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-10-13 21:15:55,821 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-10-13 21:15:55,821 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-10-13 21:15:55,821 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhEnableForwarding [2019-10-13 21:15:55,821 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-10-13 21:15:55,822 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-10-13 21:15:55,822 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-10-13 21:15:55,822 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-10-13 21:15:55,822 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-10-13 21:15:55,822 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-10-13 21:15:55,822 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-10-13 21:15:55,822 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-10-13 21:15:55,823 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-10-13 21:15:55,823 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-10-13 21:15:55,823 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-10-13 21:15:55,823 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-10-13 21:15:55,824 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-10-13 21:15:55,824 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-10-13 21:15:55,824 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Encrypt [2019-10-13 21:15:55,824 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-10-13 21:15:55,824 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-10-13 21:15:55,824 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-10-13 21:15:55,825 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Forward [2019-10-13 21:15:55,825 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Verify [2019-10-13 21:15:55,825 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-10-13 21:15:55,826 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-10-13 21:15:55,826 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-10-13 21:15:55,826 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-10-13 21:15:55,826 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-10-13 21:15:55,826 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-10-13 21:15:55,826 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-10-13 21:15:55,827 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-10-13 21:15:55,827 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-10-13 21:15:55,827 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-10-13 21:15:55,828 INFO L138 BoogieDeclarations]: Found implementation of procedure forward [2019-10-13 21:15:55,828 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-10-13 21:15:55,828 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__SignVerify_spec__1 [2019-10-13 21:15:55,829 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__SignVerify_spec__2 [2019-10-13 21:15:55,829 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-10-13 21:15:55,830 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-10-13 21:15:55,830 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-10-13 21:15:55,830 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-10-13 21:15:55,830 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-10-13 21:15:55,830 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-10-13 21:15:55,831 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-10-13 21:15:55,831 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-10-13 21:15:55,831 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-10-13 21:15:55,831 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-10-13 21:15:55,831 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-10-13 21:15:55,831 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-10-13 21:15:55,831 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-10-13 21:15:55,832 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-10-13 21:15:55,832 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-10-13 21:15:55,832 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-10-13 21:15:55,832 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-10-13 21:15:55,832 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-10-13 21:15:55,832 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-10-13 21:15:55,832 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-10-13 21:15:55,833 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-10-13 21:15:55,833 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-10-13 21:15:55,833 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Encrypt [2019-10-13 21:15:55,833 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Forward [2019-10-13 21:15:55,833 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-10-13 21:15:55,833 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-10-13 21:15:55,833 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-10-13 21:15:55,834 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-10-13 21:15:55,834 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-10-13 21:15:55,834 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-10-13 21:15:55,834 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 21:15:55,834 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 21:15:55,835 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-10-13 21:15:55,835 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-10-13 21:15:55,835 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-10-13 21:15:55,836 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-10-13 21:15:55,836 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-10-13 21:15:55,836 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-10-13 21:15:55,837 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-10-13 21:15:55,837 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-10-13 21:15:55,837 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-10-13 21:15:55,837 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-10-13 21:15:55,837 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-10-13 21:15:55,837 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-10-13 21:15:55,838 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-10-13 21:15:55,838 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-10-13 21:15:55,838 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-10-13 21:15:55,838 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-10-13 21:15:55,838 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-10-13 21:15:55,839 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-10-13 21:15:55,840 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-10-13 21:15:55,843 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-10-13 21:15:55,843 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-10-13 21:15:55,843 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-10-13 21:15:55,844 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-10-13 21:15:55,844 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-10-13 21:15:55,844 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-10-13 21:15:55,845 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-10-13 21:15:55,851 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-10-13 21:15:55,852 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-10-13 21:15:55,852 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-10-13 21:15:55,852 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-13 21:15:55,852 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-13 21:15:55,852 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-10-13 21:15:55,852 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-10-13 21:15:55,852 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-10-13 21:15:55,852 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-10-13 21:15:55,853 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-10-13 21:15:55,853 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-10-13 21:15:55,853 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-10-13 21:15:55,853 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-10-13 21:15:55,854 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-10-13 21:15:55,855 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-10-13 21:15:55,855 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-10-13 21:15:55,855 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-10-13 21:15:55,855 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-10-13 21:15:55,855 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-10-13 21:15:55,855 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-10-13 21:15:55,856 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-10-13 21:15:55,856 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 21:15:55,856 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-10-13 21:15:55,856 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-10-13 21:15:55,856 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-10-13 21:15:55,856 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-10-13 21:15:55,856 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-10-13 21:15:55,857 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-10-13 21:15:55,857 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-10-13 21:15:55,857 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-10-13 21:15:55,857 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-10-13 21:15:55,857 INFO L130 BoogieDeclarations]: Found specification of procedure rjhEnableForwarding [2019-10-13 21:15:55,857 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-10-13 21:15:55,857 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-10-13 21:15:55,858 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-10-13 21:15:55,858 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 21:15:55,858 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-10-13 21:15:55,858 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 21:15:55,858 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 21:15:55,858 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-10-13 21:15:55,859 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 21:15:55,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 21:15:55,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-13 21:15:55,859 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 21:15:55,859 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-10-13 21:15:55,860 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 21:15:55,860 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-10-13 21:15:55,860 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-10-13 21:15:55,860 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-13 21:15:55,860 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-10-13 21:15:55,860 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-10-13 21:15:55,861 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-10-13 21:15:55,861 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-10-13 21:15:55,861 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-10-13 21:15:55,861 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-10-13 21:15:55,861 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-10-13 21:15:55,862 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-10-13 21:15:55,862 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-10-13 21:15:55,862 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-10-13 21:15:55,862 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-10-13 21:15:55,862 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-10-13 21:15:55,862 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-10-13 21:15:55,863 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-10-13 21:15:55,863 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-10-13 21:15:55,863 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-10-13 21:15:55,863 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-10-13 21:15:55,863 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-10-13 21:15:55,863 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-10-13 21:15:55,864 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-10-13 21:15:55,864 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-10-13 21:15:55,864 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-10-13 21:15:55,864 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-10-13 21:15:55,864 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-10-13 21:15:55,864 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-10-13 21:15:55,865 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-10-13 21:15:55,865 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-10-13 21:15:55,865 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-10-13 21:15:55,865 INFO L130 BoogieDeclarations]: Found specification of procedure forward [2019-10-13 21:15:55,865 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-10-13 21:15:55,865 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__SignVerify_spec__1 [2019-10-13 21:15:55,866 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-10-13 21:15:55,866 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Encrypt [2019-10-13 21:15:55,866 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-10-13 21:15:55,866 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Forward [2019-10-13 21:15:55,866 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Verify [2019-10-13 21:15:55,866 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__SignVerify_spec__2 [2019-10-13 21:15:55,867 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-10-13 21:15:55,867 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-10-13 21:15:55,867 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-10-13 21:15:55,867 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-10-13 21:15:55,867 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-10-13 21:15:55,867 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-10-13 21:15:55,868 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-10-13 21:15:55,868 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-10-13 21:15:55,868 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-10-13 21:15:55,868 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-10-13 21:15:55,868 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Encrypt [2019-10-13 21:15:55,868 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Forward [2019-10-13 21:15:55,868 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-10-13 21:15:55,869 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-10-13 21:15:55,869 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 21:15:55,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-13 21:15:55,869 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 21:15:58,327 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 21:15:58,328 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-13 21:15:58,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:15:58 BoogieIcfgContainer [2019-10-13 21:15:58,330 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 21:15:58,331 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 21:15:58,332 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 21:15:58,335 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 21:15:58,335 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 09:15:54" (1/3) ... [2019-10-13 21:15:58,336 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f41daef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:15:58, skipping insertion in model container [2019-10-13 21:15:58,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 09:15:55" (2/3) ... [2019-10-13 21:15:58,337 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f41daef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 09:15:58, skipping insertion in model container [2019-10-13 21:15:58,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 09:15:58" (3/3) ... [2019-10-13 21:15:58,339 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec3_product31.cil.c [2019-10-13 21:15:58,352 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 21:15:58,366 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 21:15:58,381 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 21:15:58,426 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 21:15:58,430 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 21:15:58,430 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 21:15:58,430 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 21:15:58,430 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 21:15:58,431 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 21:15:58,431 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 21:15:58,431 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 21:15:58,471 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states. [2019-10-13 21:15:58,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2019-10-13 21:15:58,511 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:58,513 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:58,516 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:58,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:58,523 INFO L82 PathProgramCache]: Analyzing trace with hash 721046369, now seen corresponding path program 1 times [2019-10-13 21:15:58,534 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:58,535 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220899902] [2019-10-13 21:15:58,535 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:58,535 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:58,536 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:58,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:15:59,267 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-13 21:15:59,268 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220899902] [2019-10-13 21:15:59,269 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:15:59,269 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-13 21:15:59,269 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247309899] [2019-10-13 21:15:59,274 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 21:15:59,276 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:15:59,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 21:15:59,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 21:15:59,294 INFO L87 Difference]: Start difference. First operand 570 states. Second operand 2 states. [2019-10-13 21:15:59,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:15:59,414 INFO L93 Difference]: Finished difference Result 882 states and 1163 transitions. [2019-10-13 21:15:59,414 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 21:15:59,416 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 195 [2019-10-13 21:15:59,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:15:59,459 INFO L225 Difference]: With dead ends: 882 [2019-10-13 21:15:59,460 INFO L226 Difference]: Without dead ends: 547 [2019-10-13 21:15:59,474 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 [2019-10-13 21:15:59,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2019-10-13 21:15:59,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 547. [2019-10-13 21:15:59,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 547 states. [2019-10-13 21:15:59,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 723 transitions. [2019-10-13 21:15:59,621 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 723 transitions. Word has length 195 [2019-10-13 21:15:59,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:15:59,625 INFO L462 AbstractCegarLoop]: Abstraction has 547 states and 723 transitions. [2019-10-13 21:15:59,625 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 21:15:59,625 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 723 transitions. [2019-10-13 21:15:59,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2019-10-13 21:15:59,635 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:15:59,636 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:15:59,636 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:15:59,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:15:59,638 INFO L82 PathProgramCache]: Analyzing trace with hash 1162563648, now seen corresponding path program 1 times [2019-10-13 21:15:59,638 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:15:59,638 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145810157] [2019-10-13 21:15:59,639 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:59,639 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:15:59,639 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:15:59,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:00,112 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-13 21:16:00,112 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145810157] [2019-10-13 21:16:00,113 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:16:00,113 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:16:00,113 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486042802] [2019-10-13 21:16:00,121 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:16:00,121 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:00,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:16:00,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:16:00,122 INFO L87 Difference]: Start difference. First operand 547 states and 723 transitions. Second operand 3 states. [2019-10-13 21:16:00,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:00,214 INFO L93 Difference]: Finished difference Result 865 states and 1126 transitions. [2019-10-13 21:16:00,214 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:16:00,214 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 196 [2019-10-13 21:16:00,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:00,219 INFO L225 Difference]: With dead ends: 865 [2019-10-13 21:16:00,220 INFO L226 Difference]: Without dead ends: 550 [2019-10-13 21:16:00,222 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 [2019-10-13 21:16:00,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2019-10-13 21:16:00,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 549. [2019-10-13 21:16:00,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 549 states. [2019-10-13 21:16:00,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 725 transitions. [2019-10-13 21:16:00,259 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 725 transitions. Word has length 196 [2019-10-13 21:16:00,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:00,261 INFO L462 AbstractCegarLoop]: Abstraction has 549 states and 725 transitions. [2019-10-13 21:16:00,261 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:16:00,261 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 725 transitions. [2019-10-13 21:16:00,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2019-10-13 21:16:00,265 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:00,266 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:00,266 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:00,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:00,266 INFO L82 PathProgramCache]: Analyzing trace with hash 1293026860, now seen corresponding path program 1 times [2019-10-13 21:16:00,267 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:00,267 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429094563] [2019-10-13 21:16:00,267 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:00,267 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:00,267 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:00,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:00,483 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-10-13 21:16:00,484 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429094563] [2019-10-13 21:16:00,484 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 21:16:00,484 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-13 21:16:00,484 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342130864] [2019-10-13 21:16:00,486 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-13 21:16:00,488 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:00,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-13 21:16:00,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-13 21:16:00,489 INFO L87 Difference]: Start difference. First operand 549 states and 725 transitions. Second operand 3 states. [2019-10-13 21:16:00,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:00,538 INFO L93 Difference]: Finished difference Result 1074 states and 1448 transitions. [2019-10-13 21:16:00,539 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-13 21:16:00,539 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 202 [2019-10-13 21:16:00,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:00,549 INFO L225 Difference]: With dead ends: 1074 [2019-10-13 21:16:00,550 INFO L226 Difference]: Without dead ends: 590 [2019-10-13 21:16:00,552 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 [2019-10-13 21:16:00,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2019-10-13 21:16:00,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 589. [2019-10-13 21:16:00,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 589 states. [2019-10-13 21:16:00,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 794 transitions. [2019-10-13 21:16:00,591 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 794 transitions. Word has length 202 [2019-10-13 21:16:00,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:00,591 INFO L462 AbstractCegarLoop]: Abstraction has 589 states and 794 transitions. [2019-10-13 21:16:00,592 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-13 21:16:00,592 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 794 transitions. [2019-10-13 21:16:00,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2019-10-13 21:16:00,596 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:00,597 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:00,597 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:00,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:00,598 INFO L82 PathProgramCache]: Analyzing trace with hash 488920011, now seen corresponding path program 1 times [2019-10-13 21:16:00,598 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:00,598 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931342961] [2019-10-13 21:16:00,599 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:00,599 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:00,599 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:00,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:01,164 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-13 21:16:01,165 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931342961] [2019-10-13 21:16:01,165 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1450811081] [2019-10-13 21:16:01,165 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 [2019-10-13 21:16:01,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:01,922 INFO L256 TraceCheckSpWp]: Trace formula consists of 2914 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:16:01,941 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:16:02,264 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 21:16:02,264 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:16:02,693 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:16:02,789 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:02,886 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:03,139 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:16:03,140 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:16:03,140 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [19, 9] total 32 [2019-10-13 21:16:03,140 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088824527] [2019-10-13 21:16:03,141 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 21:16:03,141 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:03,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 21:16:03,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=906, Unknown=0, NotChecked=0, Total=992 [2019-10-13 21:16:03,146 INFO L87 Difference]: Start difference. First operand 589 states and 794 transitions. Second operand 9 states. [2019-10-13 21:16:04,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:04,940 INFO L93 Difference]: Finished difference Result 1156 states and 1568 transitions. [2019-10-13 21:16:04,940 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 21:16:04,940 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 203 [2019-10-13 21:16:04,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:04,945 INFO L225 Difference]: With dead ends: 1156 [2019-10-13 21:16:04,945 INFO L226 Difference]: Without dead ends: 603 [2019-10-13 21:16:04,948 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 432 GetRequests, 395 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=107, Invalid=1083, Unknown=0, NotChecked=0, Total=1190 [2019-10-13 21:16:04,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2019-10-13 21:16:05,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 603. [2019-10-13 21:16:05,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2019-10-13 21:16:05,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 812 transitions. [2019-10-13 21:16:05,023 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 812 transitions. Word has length 203 [2019-10-13 21:16:05,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:05,023 INFO L462 AbstractCegarLoop]: Abstraction has 603 states and 812 transitions. [2019-10-13 21:16:05,023 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 21:16:05,024 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 812 transitions. [2019-10-13 21:16:05,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2019-10-13 21:16:05,027 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:05,028 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:05,245 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:05,245 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:05,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:05,246 INFO L82 PathProgramCache]: Analyzing trace with hash 1165436815, now seen corresponding path program 1 times [2019-10-13 21:16:05,247 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:05,247 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713547103] [2019-10-13 21:16:05,247 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:05,247 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:05,248 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:05,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:05,744 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-13 21:16:05,744 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713547103] [2019-10-13 21:16:05,744 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [124587571] [2019-10-13 21:16:05,745 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 [2019-10-13 21:16:06,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:06,340 INFO L256 TraceCheckSpWp]: Trace formula consists of 2915 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:16:06,348 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:16:06,564 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-10-13 21:16:06,564 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:16:06,864 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:06,929 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:06,984 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:16:06,984 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 21:16:06,985 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [19, 7] total 28 [2019-10-13 21:16:06,985 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113833875] [2019-10-13 21:16:06,985 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-13 21:16:06,986 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:06,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-13 21:16:06,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=684, Unknown=0, NotChecked=0, Total=756 [2019-10-13 21:16:06,987 INFO L87 Difference]: Start difference. First operand 603 states and 812 transitions. Second operand 7 states. [2019-10-13 21:16:08,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:08,181 INFO L93 Difference]: Finished difference Result 1157 states and 1572 transitions. [2019-10-13 21:16:08,181 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 21:16:08,182 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 204 [2019-10-13 21:16:08,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:08,186 INFO L225 Difference]: With dead ends: 1157 [2019-10-13 21:16:08,186 INFO L226 Difference]: Without dead ends: 605 [2019-10-13 21:16:08,189 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 433 GetRequests, 402 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=86, Invalid=784, Unknown=0, NotChecked=0, Total=870 [2019-10-13 21:16:08,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2019-10-13 21:16:08,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 605. [2019-10-13 21:16:08,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 605 states. [2019-10-13 21:16:08,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 815 transitions. [2019-10-13 21:16:08,253 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 815 transitions. Word has length 204 [2019-10-13 21:16:08,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:08,254 INFO L462 AbstractCegarLoop]: Abstraction has 605 states and 815 transitions. [2019-10-13 21:16:08,254 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-13 21:16:08,254 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 815 transitions. [2019-10-13 21:16:08,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2019-10-13 21:16:08,258 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:08,259 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:08,466 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:08,467 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:08,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:08,467 INFO L82 PathProgramCache]: Analyzing trace with hash 260395139, now seen corresponding path program 1 times [2019-10-13 21:16:08,468 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:08,468 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323122535] [2019-10-13 21:16:08,468 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:08,469 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:08,469 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:08,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:08,929 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-13 21:16:08,930 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323122535] [2019-10-13 21:16:08,930 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [258555739] [2019-10-13 21:16:08,935 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 [2019-10-13 21:16:09,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:09,497 INFO L256 TraceCheckSpWp]: Trace formula consists of 2916 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:16:09,507 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:16:09,719 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-13 21:16:09,719 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:16:10,128 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:16:10,223 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:10,354 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:10,490 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:16:10,490 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:16:10,490 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [19] total 33 [2019-10-13 21:16:10,490 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307510759] [2019-10-13 21:16:10,491 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-13 21:16:10,492 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:10,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-13 21:16:10,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=961, Unknown=0, NotChecked=0, Total=1056 [2019-10-13 21:16:10,493 INFO L87 Difference]: Start difference. First operand 605 states and 815 transitions. Second operand 16 states. [2019-10-13 21:16:12,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:12,478 INFO L93 Difference]: Finished difference Result 1161 states and 1572 transitions. [2019-10-13 21:16:12,478 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 21:16:12,478 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 205 [2019-10-13 21:16:12,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:12,484 INFO L225 Difference]: With dead ends: 1161 [2019-10-13 21:16:12,484 INFO L226 Difference]: Without dead ends: 617 [2019-10-13 21:16:12,488 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 437 GetRequests, 399 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=127, Invalid=1205, Unknown=0, NotChecked=0, Total=1332 [2019-10-13 21:16:12,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2019-10-13 21:16:12,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 615. [2019-10-13 21:16:12,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 615 states. [2019-10-13 21:16:12,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 826 transitions. [2019-10-13 21:16:12,529 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 826 transitions. Word has length 205 [2019-10-13 21:16:12,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:12,529 INFO L462 AbstractCegarLoop]: Abstraction has 615 states and 826 transitions. [2019-10-13 21:16:12,529 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-13 21:16:12,530 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 826 transitions. [2019-10-13 21:16:12,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2019-10-13 21:16:12,533 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:12,534 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:12,741 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:12,742 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:12,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:12,742 INFO L82 PathProgramCache]: Analyzing trace with hash -1953202013, now seen corresponding path program 2 times [2019-10-13 21:16:12,742 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:12,742 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504863285] [2019-10-13 21:16:12,742 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:12,743 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:12,743 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:12,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:13,152 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:16:13,152 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504863285] [2019-10-13 21:16:13,152 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049377655] [2019-10-13 21:16:13,153 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 [2019-10-13 21:16:13,667 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2019-10-13 21:16:13,667 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:16:13,673 INFO L256 TraceCheckSpWp]: Trace formula consists of 2299 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-13 21:16:13,680 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:16:13,871 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-13 21:16:13,871 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:16:14,316 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-13 21:16:14,316 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:16:14,316 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [19] total 31 [2019-10-13 21:16:14,317 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689899088] [2019-10-13 21:16:14,318 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-13 21:16:14,318 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:14,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-13 21:16:14,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=853, Unknown=0, NotChecked=0, Total=930 [2019-10-13 21:16:14,320 INFO L87 Difference]: Start difference. First operand 615 states and 826 transitions. Second operand 14 states. [2019-10-13 21:16:16,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:16,582 INFO L93 Difference]: Finished difference Result 2079 states and 2826 transitions. [2019-10-13 21:16:16,583 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-10-13 21:16:16,583 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 206 [2019-10-13 21:16:16,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:16,602 INFO L225 Difference]: With dead ends: 2079 [2019-10-13 21:16:16,602 INFO L226 Difference]: Without dead ends: 1777 [2019-10-13 21:16:16,606 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 456 GetRequests, 410 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=201, Invalid=1869, Unknown=0, NotChecked=0, Total=2070 [2019-10-13 21:16:16,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1777 states. [2019-10-13 21:16:16,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1777 to 1426. [2019-10-13 21:16:16,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1426 states. [2019-10-13 21:16:16,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1426 states to 1426 states and 1978 transitions. [2019-10-13 21:16:16,706 INFO L78 Accepts]: Start accepts. Automaton has 1426 states and 1978 transitions. Word has length 206 [2019-10-13 21:16:16,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:16,708 INFO L462 AbstractCegarLoop]: Abstraction has 1426 states and 1978 transitions. [2019-10-13 21:16:16,708 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-13 21:16:16,708 INFO L276 IsEmpty]: Start isEmpty. Operand 1426 states and 1978 transitions. [2019-10-13 21:16:16,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2019-10-13 21:16:16,713 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:16,714 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:16,930 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:16,931 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:16,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:16,931 INFO L82 PathProgramCache]: Analyzing trace with hash -362259919, now seen corresponding path program 1 times [2019-10-13 21:16:16,932 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:16,932 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607892881] [2019-10-13 21:16:16,933 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:16,933 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:16,933 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:16,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:17,174 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:16:17,174 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607892881] [2019-10-13 21:16:17,174 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715375262] [2019-10-13 21:16:17,175 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:17,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:17,853 INFO L256 TraceCheckSpWp]: Trace formula consists of 2918 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-13 21:16:17,860 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:16:18,027 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-13 21:16:18,028 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:16:18,358 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 21:16:18,441 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:18,512 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:18,649 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:16:18,650 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:16:18,650 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [15] total 28 [2019-10-13 21:16:18,650 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862599265] [2019-10-13 21:16:18,651 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-13 21:16:18,651 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:18,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-13 21:16:18,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=683, Unknown=0, NotChecked=0, Total=756 [2019-10-13 21:16:18,652 INFO L87 Difference]: Start difference. First operand 1426 states and 1978 transitions. Second operand 15 states. [2019-10-13 21:16:20,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:20,566 INFO L93 Difference]: Finished difference Result 2746 states and 3832 transitions. [2019-10-13 21:16:20,567 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-13 21:16:20,567 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 207 [2019-10-13 21:16:20,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:20,578 INFO L225 Difference]: With dead ends: 2746 [2019-10-13 21:16:20,578 INFO L226 Difference]: Without dead ends: 1432 [2019-10-13 21:16:20,584 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 437 GetRequests, 403 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=102, Invalid=890, Unknown=0, NotChecked=0, Total=992 [2019-10-13 21:16:20,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1432 states. [2019-10-13 21:16:20,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1432 to 1426. [2019-10-13 21:16:20,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1426 states. [2019-10-13 21:16:20,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1426 states to 1426 states and 1976 transitions. [2019-10-13 21:16:20,668 INFO L78 Accepts]: Start accepts. Automaton has 1426 states and 1976 transitions. Word has length 207 [2019-10-13 21:16:20,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:20,669 INFO L462 AbstractCegarLoop]: Abstraction has 1426 states and 1976 transitions. [2019-10-13 21:16:20,669 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-13 21:16:20,669 INFO L276 IsEmpty]: Start isEmpty. Operand 1426 states and 1976 transitions. [2019-10-13 21:16:20,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2019-10-13 21:16:20,677 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:20,677 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:20,890 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:20,891 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:20,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:20,891 INFO L82 PathProgramCache]: Analyzing trace with hash 1553698092, now seen corresponding path program 1 times [2019-10-13 21:16:20,892 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:20,893 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198475827] [2019-10-13 21:16:20,893 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:20,893 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:20,893 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:20,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:21,200 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-10-13 21:16:21,201 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198475827] [2019-10-13 21:16:21,201 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1434940563] [2019-10-13 21:16:21,201 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:21,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:21,853 INFO L256 TraceCheckSpWp]: Trace formula consists of 2919 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-13 21:16:21,860 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:16:21,972 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-10-13 21:16:21,973 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:16:22,224 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:22,275 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-13 21:16:22,333 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-13 21:16:22,333 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:16:22,333 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [15] total 25 [2019-10-13 21:16:22,333 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733576571] [2019-10-13 21:16:22,334 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-10-13 21:16:22,335 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:22,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-10-13 21:16:22,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2019-10-13 21:16:22,335 INFO L87 Difference]: Start difference. First operand 1426 states and 1976 transitions. Second operand 12 states. [2019-10-13 21:16:23,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:23,628 INFO L93 Difference]: Finished difference Result 2273 states and 3108 transitions. [2019-10-13 21:16:23,628 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 21:16:23,629 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 208 [2019-10-13 21:16:23,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:23,636 INFO L225 Difference]: With dead ends: 2273 [2019-10-13 21:16:23,636 INFO L226 Difference]: Without dead ends: 1202 [2019-10-13 21:16:23,640 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 438 GetRequests, 410 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=88, Invalid=668, Unknown=0, NotChecked=0, Total=756 [2019-10-13 21:16:23,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1202 states. [2019-10-13 21:16:23,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1202 to 1202. [2019-10-13 21:16:23,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1202 states. [2019-10-13 21:16:23,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1202 states to 1202 states and 1627 transitions. [2019-10-13 21:16:23,709 INFO L78 Accepts]: Start accepts. Automaton has 1202 states and 1627 transitions. Word has length 208 [2019-10-13 21:16:23,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:23,792 INFO L462 AbstractCegarLoop]: Abstraction has 1202 states and 1627 transitions. [2019-10-13 21:16:23,792 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-10-13 21:16:23,792 INFO L276 IsEmpty]: Start isEmpty. Operand 1202 states and 1627 transitions. [2019-10-13 21:16:23,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2019-10-13 21:16:23,796 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:23,797 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:23,997 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:23,998 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:23,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:23,998 INFO L82 PathProgramCache]: Analyzing trace with hash 146739268, now seen corresponding path program 2 times [2019-10-13 21:16:23,999 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:23,999 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377350873] [2019-10-13 21:16:23,999 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:23,999 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:23,999 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:24,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:24,247 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-13 21:16:24,248 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377350873] [2019-10-13 21:16:24,248 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1137017352] [2019-10-13 21:16:24,248 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:24,810 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2019-10-13 21:16:24,810 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-13 21:16:24,816 INFO L256 TraceCheckSpWp]: Trace formula consists of 2302 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-13 21:16:24,821 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 21:16:24,956 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-10-13 21:16:24,957 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 21:16:25,359 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-10-13 21:16:25,360 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-13 21:16:25,360 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [15] total 27 [2019-10-13 21:16:25,360 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648244139] [2019-10-13 21:16:25,361 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-13 21:16:25,361 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-13 21:16:25,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-13 21:16:25,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=638, Unknown=0, NotChecked=0, Total=702 [2019-10-13 21:16:25,362 INFO L87 Difference]: Start difference. First operand 1202 states and 1627 transitions. Second operand 14 states. [2019-10-13 21:16:27,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 21:16:27,687 INFO L93 Difference]: Finished difference Result 4115 states and 5635 transitions. [2019-10-13 21:16:27,687 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-10-13 21:16:27,687 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 209 [2019-10-13 21:16:27,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 21:16:27,708 INFO L225 Difference]: With dead ends: 4115 [2019-10-13 21:16:27,708 INFO L226 Difference]: Without dead ends: 3505 [2019-10-13 21:16:27,712 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 459 GetRequests, 417 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=188, Invalid=1534, Unknown=0, NotChecked=0, Total=1722 [2019-10-13 21:16:27,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3505 states. [2019-10-13 21:16:27,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3505 to 2803. [2019-10-13 21:16:27,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2803 states. [2019-10-13 21:16:27,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2803 states to 2803 states and 3924 transitions. [2019-10-13 21:16:27,880 INFO L78 Accepts]: Start accepts. Automaton has 2803 states and 3924 transitions. Word has length 209 [2019-10-13 21:16:27,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 21:16:27,881 INFO L462 AbstractCegarLoop]: Abstraction has 2803 states and 3924 transitions. [2019-10-13 21:16:27,881 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-13 21:16:27,881 INFO L276 IsEmpty]: Start isEmpty. Operand 2803 states and 3924 transitions. [2019-10-13 21:16:27,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2019-10-13 21:16:27,894 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 21:16:27,895 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 21:16:28,108 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 21:16:28,109 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 21:16:28,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 21:16:28,110 INFO L82 PathProgramCache]: Analyzing trace with hash 1115313220, now seen corresponding path program 1 times [2019-10-13 21:16:28,110 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-13 21:16:28,110 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917092635] [2019-10-13 21:16:28,111 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:28,111 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 21:16:28,111 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 21:16:28,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 21:16:28,270 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2019-10-13 21:16:28,271 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917092635] [2019-10-13 21:16:28,271 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1614808188] [2019-10-13 21:16:28,271 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true