/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/product-lines/email_spec4_product34.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 00:52:48,843 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 00:52:48,846 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 00:52:48,858 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 00:52:48,858 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 00:52:48,859 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 00:52:48,860 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 00:52:48,862 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 00:52:48,864 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 00:52:48,865 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 00:52:48,866 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 00:52:48,867 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 00:52:48,867 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 00:52:48,868 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 00:52:48,869 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 00:52:48,870 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 00:52:48,871 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 00:52:48,872 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 00:52:48,874 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 00:52:48,875 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 00:52:48,877 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 00:52:48,878 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 00:52:48,879 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 00:52:48,880 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 00:52:48,882 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 00:52:48,883 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 00:52:48,883 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 00:52:48,884 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 00:52:48,884 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 00:52:48,885 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 00:52:48,885 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 00:52:48,886 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 00:52:48,887 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 00:52:48,888 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 00:52:48,889 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 00:52:48,889 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 00:52:48,890 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 00:52:48,890 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 00:52:48,890 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 00:52:48,891 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 00:52:48,892 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 00:52:48,892 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-07 00:52:48,907 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 00:52:48,907 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 00:52:48,908 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 00:52:48,908 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 00:52:48,908 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 00:52:48,909 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 00:52:48,909 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 00:52:48,909 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 00:52:48,909 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 00:52:48,910 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 00:52:48,910 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 00:52:48,910 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 00:52:48,910 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 00:52:48,910 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 00:52:48,910 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 00:52:48,911 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 00:52:48,911 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 00:52:48,911 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 00:52:48,911 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 00:52:48,912 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 00:52:48,912 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 00:52:48,912 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:52:48,912 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 00:52:48,912 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 00:52:48,913 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 00:52:48,913 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 00:52:48,913 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 00:52:48,913 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 00:52:48,913 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-11-07 00:52:49,208 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 00:52:49,225 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 00:52:49,229 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 00:52:49,231 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 00:52:49,231 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 00:52:49,232 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec4_product34.cil.c [2019-11-07 00:52:49,305 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/607021ed0/dbb51c1371044a1f883de9b915ad5f90/FLAGe13ab2804 [2019-11-07 00:52:49,912 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 00:52:49,913 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec4_product34.cil.c [2019-11-07 00:52:49,935 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/607021ed0/dbb51c1371044a1f883de9b915ad5f90/FLAGe13ab2804 [2019-11-07 00:52:50,104 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/607021ed0/dbb51c1371044a1f883de9b915ad5f90 [2019-11-07 00:52:50,113 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 00:52:50,114 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 00:52:50,115 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 00:52:50,115 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 00:52:50,119 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 00:52:50,120 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:52:50" (1/1) ... [2019-11-07 00:52:50,122 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@798903f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:50, skipping insertion in model container [2019-11-07 00:52:50,123 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:52:50" (1/1) ... [2019-11-07 00:52:50,130 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 00:52:50,224 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 00:52:51,041 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:52:51,069 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 00:52:51,204 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:52:51,302 INFO L192 MainTranslator]: Completed translation [2019-11-07 00:52:51,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:51 WrapperNode [2019-11-07 00:52:51,303 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 00:52:51,304 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 00:52:51,304 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 00:52:51,304 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 00:52:51,319 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:51" (1/1) ... [2019-11-07 00:52:51,320 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:51" (1/1) ... [2019-11-07 00:52:51,354 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:51" (1/1) ... [2019-11-07 00:52:51,355 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:51" (1/1) ... [2019-11-07 00:52:51,429 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:51" (1/1) ... [2019-11-07 00:52:51,473 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:51" (1/1) ... [2019-11-07 00:52:51,495 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:51" (1/1) ... [2019-11-07 00:52:51,514 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 00:52:51,515 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 00:52:51,515 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 00:52:51,515 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 00:52:51,516 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:51" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:52:51,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 00:52:51,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 00:52:51,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 00:52:51,588 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 00:52:51,588 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-11-07 00:52:51,589 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-11-07 00:52:51,590 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-11-07 00:52:51,590 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-11-07 00:52:51,590 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-11-07 00:52:51,591 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-11-07 00:52:51,591 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-11-07 00:52:51,591 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-11-07 00:52:51,591 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 00:52:51,592 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 00:52:51,592 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-11-07 00:52:51,592 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-11-07 00:52:51,594 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-11-07 00:52:51,594 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-11-07 00:52:51,594 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-11-07 00:52:51,596 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-11-07 00:52:51,596 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-11-07 00:52:51,596 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-11-07 00:52:51,596 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-11-07 00:52:51,596 INFO L138 BoogieDeclarations]: Found implementation of procedure bobSetAddressBook [2019-11-07 00:52:51,597 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhEnableForwarding [2019-11-07 00:52:51,597 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-11-07 00:52:51,597 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-11-07 00:52:51,597 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-11-07 00:52:51,597 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-11-07 00:52:51,597 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-11-07 00:52:51,597 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-11-07 00:52:51,600 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-11-07 00:52:51,601 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-11-07 00:52:51,601 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-11-07 00:52:51,601 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-11-07 00:52:51,601 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-11-07 00:52:51,601 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-11-07 00:52:51,601 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-11-07 00:52:51,601 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-11-07 00:52:51,602 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-11-07 00:52:51,602 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-11-07 00:52:51,602 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-11-07 00:52:51,602 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-11-07 00:52:51,602 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-11-07 00:52:51,602 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-11-07 00:52:51,602 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-11-07 00:52:51,603 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-11-07 00:52:51,603 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-11-07 00:52:51,603 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-11-07 00:52:51,603 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-11-07 00:52:51,603 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-11-07 00:52:51,604 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-11-07 00:52:51,604 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-11-07 00:52:51,604 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-11-07 00:52:51,604 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-11-07 00:52:51,604 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-11-07 00:52:51,604 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Encrypt [2019-11-07 00:52:51,604 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AddressBook [2019-11-07 00:52:51,605 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-11-07 00:52:51,605 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-11-07 00:52:51,605 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-11-07 00:52:51,605 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Forward [2019-11-07 00:52:51,606 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Verify [2019-11-07 00:52:51,606 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-11-07 00:52:51,606 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-11-07 00:52:51,606 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-11-07 00:52:51,607 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-11-07 00:52:51,607 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-11-07 00:52:51,607 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-11-07 00:52:51,607 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-11-07 00:52:51,607 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-11-07 00:52:51,607 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-11-07 00:52:51,607 INFO L138 BoogieDeclarations]: Found implementation of procedure sendToAddressBook [2019-11-07 00:52:51,608 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-11-07 00:52:51,608 INFO L138 BoogieDeclarations]: Found implementation of procedure forward [2019-11-07 00:52:51,609 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-11-07 00:52:51,609 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-11-07 00:52:51,609 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-11-07 00:52:51,609 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-11-07 00:52:51,610 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-11-07 00:52:51,610 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-11-07 00:52:51,610 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-11-07 00:52:51,610 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-11-07 00:52:51,611 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-11-07 00:52:51,611 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-11-07 00:52:51,612 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-11-07 00:52:51,612 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-11-07 00:52:51,613 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-11-07 00:52:51,613 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-11-07 00:52:51,613 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-11-07 00:52:51,613 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-11-07 00:52:51,613 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-11-07 00:52:51,613 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-11-07 00:52:51,614 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-11-07 00:52:51,614 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-11-07 00:52:51,614 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-11-07 00:52:51,614 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-11-07 00:52:51,614 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 00:52:51,614 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 00:52:51,614 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 00:52:51,615 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 00:52:51,615 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 00:52:51,615 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__SignForward_spec__1 [2019-11-07 00:52:51,615 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-11-07 00:52:51,615 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-11-07 00:52:51,615 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__AddressBook [2019-11-07 00:52:51,616 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Forward [2019-11-07 00:52:51,616 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-11-07 00:52:51,616 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-11-07 00:52:51,616 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-11-07 00:52:51,616 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-11-07 00:52:51,616 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-11-07 00:52:51,617 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 00:52:51,617 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 00:52:51,617 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 00:52:51,617 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 00:52:51,617 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 00:52:51,618 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 00:52:51,618 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 00:52:51,618 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 00:52:51,618 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 00:52:51,619 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 00:52:51,619 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-11-07 00:52:51,619 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-11-07 00:52:51,620 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-11-07 00:52:51,620 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-11-07 00:52:51,620 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-11-07 00:52:51,621 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-11-07 00:52:51,621 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-11-07 00:52:51,621 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-11-07 00:52:51,621 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-11-07 00:52:51,621 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-11-07 00:52:51,622 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-11-07 00:52:51,622 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-11-07 00:52:51,622 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 00:52:51,622 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 00:52:51,624 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 00:52:51,624 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-11-07 00:52:51,624 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-11-07 00:52:51,624 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-11-07 00:52:51,625 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-11-07 00:52:51,625 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-11-07 00:52:51,625 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-11-07 00:52:51,625 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-11-07 00:52:51,625 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-11-07 00:52:51,625 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-11-07 00:52:51,626 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-11-07 00:52:51,626 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-11-07 00:52:51,626 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 00:52:51,626 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 00:52:51,626 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 00:52:51,626 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-11-07 00:52:51,627 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-11-07 00:52:51,627 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-11-07 00:52:51,627 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-11-07 00:52:51,627 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-11-07 00:52:51,627 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-11-07 00:52:51,627 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-11-07 00:52:51,627 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-11-07 00:52:51,628 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-11-07 00:52:51,628 INFO L130 BoogieDeclarations]: Found specification of procedure bobSetAddressBook [2019-11-07 00:52:51,628 INFO L130 BoogieDeclarations]: Found specification of procedure rjhEnableForwarding [2019-11-07 00:52:51,628 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-11-07 00:52:51,628 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-11-07 00:52:51,628 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-11-07 00:52:51,629 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 00:52:51,629 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-11-07 00:52:51,629 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-11-07 00:52:51,629 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-11-07 00:52:51,629 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-11-07 00:52:51,629 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-11-07 00:52:51,630 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-11-07 00:52:51,630 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-11-07 00:52:51,630 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-11-07 00:52:51,630 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-11-07 00:52:51,630 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-11-07 00:52:51,630 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-11-07 00:52:51,631 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-11-07 00:52:51,631 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-11-07 00:52:51,631 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-11-07 00:52:51,631 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-11-07 00:52:51,631 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-11-07 00:52:51,631 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-11-07 00:52:51,632 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-11-07 00:52:51,632 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-11-07 00:52:51,632 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-11-07 00:52:51,632 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-11-07 00:52:51,632 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-11-07 00:52:51,632 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-11-07 00:52:51,633 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-11-07 00:52:51,633 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-11-07 00:52:51,633 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-11-07 00:52:51,633 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-11-07 00:52:51,633 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-11-07 00:52:51,633 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-11-07 00:52:51,634 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-11-07 00:52:51,634 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-11-07 00:52:51,634 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-11-07 00:52:51,634 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-11-07 00:52:51,634 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-11-07 00:52:51,634 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-11-07 00:52:51,635 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-11-07 00:52:51,635 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-11-07 00:52:51,635 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-11-07 00:52:51,635 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-11-07 00:52:51,635 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-11-07 00:52:51,635 INFO L130 BoogieDeclarations]: Found specification of procedure sendToAddressBook [2019-11-07 00:52:51,636 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-11-07 00:52:51,636 INFO L130 BoogieDeclarations]: Found specification of procedure forward [2019-11-07 00:52:51,636 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-11-07 00:52:51,636 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__SignForward_spec__1 [2019-11-07 00:52:51,636 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-11-07 00:52:51,636 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Encrypt [2019-11-07 00:52:51,637 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AddressBook [2019-11-07 00:52:51,637 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-11-07 00:52:51,637 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Forward [2019-11-07 00:52:51,637 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Verify [2019-11-07 00:52:51,637 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-11-07 00:52:51,638 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-11-07 00:52:51,638 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-11-07 00:52:51,638 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-11-07 00:52:51,638 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-11-07 00:52:51,638 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-11-07 00:52:51,638 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-11-07 00:52:51,638 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-11-07 00:52:51,639 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 00:52:51,639 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-11-07 00:52:51,639 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-11-07 00:52:51,639 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-11-07 00:52:51,639 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__AddressBook [2019-11-07 00:52:51,639 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Forward [2019-11-07 00:52:51,640 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-11-07 00:52:51,640 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 00:52:51,640 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 00:52:51,640 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 00:52:51,640 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 00:52:51,640 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 00:52:51,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 00:52:51,641 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 00:52:51,641 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 00:52:51,641 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 00:52:51,641 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 00:52:51,641 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 00:52:51,641 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 00:52:51,642 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 00:52:51,642 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 00:52:51,642 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 00:52:51,642 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 00:52:51,642 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 00:52:51,642 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 00:52:51,643 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 00:52:53,847 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 00:52:53,847 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-07 00:52:53,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:52:53 BoogieIcfgContainer [2019-11-07 00:52:53,850 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 00:52:53,851 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 00:52:53,852 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 00:52:53,856 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 00:52:53,856 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:52:50" (1/3) ... [2019-11-07 00:52:53,858 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59a8b6d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:52:53, skipping insertion in model container [2019-11-07 00:52:53,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:52:51" (2/3) ... [2019-11-07 00:52:53,858 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59a8b6d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:52:53, skipping insertion in model container [2019-11-07 00:52:53,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:52:53" (3/3) ... [2019-11-07 00:52:53,863 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec4_product34.cil.c [2019-11-07 00:52:53,874 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 00:52:53,889 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 00:52:53,901 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 00:52:53,932 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 00:52:53,932 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 00:52:53,932 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 00:52:53,933 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 00:52:53,933 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 00:52:53,933 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 00:52:53,933 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 00:52:53,933 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 00:52:53,967 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states. [2019-11-07 00:52:53,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2019-11-07 00:52:53,993 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:52:53,994 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-11-07 00:52:53,996 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:52:54,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:52:54,003 INFO L82 PathProgramCache]: Analyzing trace with hash 584038483, now seen corresponding path program 1 times [2019-11-07 00:52:54,014 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:52:54,014 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584472716] [2019-11-07 00:52:54,015 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:52:54,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:54,710 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-11-07 00:52:54,710 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584472716] [2019-11-07 00:52:54,711 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:52:54,711 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 00:52:54,712 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065469084] [2019-11-07 00:52:54,718 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 00:52:54,719 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:52:54,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 00:52:54,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 00:52:54,737 INFO L87 Difference]: Start difference. First operand 651 states. Second operand 2 states. [2019-11-07 00:52:54,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:52:54,846 INFO L93 Difference]: Finished difference Result 988 states and 1331 transitions. [2019-11-07 00:52:54,846 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 00:52:54,847 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 173 [2019-11-07 00:52:54,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:52:54,870 INFO L225 Difference]: With dead ends: 988 [2019-11-07 00:52:54,870 INFO L226 Difference]: Without dead ends: 622 [2019-11-07 00:52:54,878 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 00:52:54,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2019-11-07 00:52:54,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 622. [2019-11-07 00:52:54,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 622 states. [2019-11-07 00:52:54,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 844 transitions. [2019-11-07 00:52:54,979 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 844 transitions. Word has length 173 [2019-11-07 00:52:54,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:52:54,982 INFO L462 AbstractCegarLoop]: Abstraction has 622 states and 844 transitions. [2019-11-07 00:52:54,982 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 00:52:54,982 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 844 transitions. [2019-11-07 00:52:54,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2019-11-07 00:52:54,989 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:52:54,990 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-11-07 00:52:54,990 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:52:54,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:52:54,991 INFO L82 PathProgramCache]: Analyzing trace with hash 1802223721, now seen corresponding path program 1 times [2019-11-07 00:52:54,991 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:52:54,991 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854140957] [2019-11-07 00:52:54,991 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:52:55,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:55,205 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-11-07 00:52:55,206 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854140957] [2019-11-07 00:52:55,206 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:52:55,206 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:52:55,206 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456120006] [2019-11-07 00:52:55,208 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:52:55,209 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:52:55,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:52:55,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:52:55,210 INFO L87 Difference]: Start difference. First operand 622 states and 844 transitions. Second operand 3 states. [2019-11-07 00:52:55,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:52:55,327 INFO L93 Difference]: Finished difference Result 971 states and 1296 transitions. [2019-11-07 00:52:55,330 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:52:55,330 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 174 [2019-11-07 00:52:55,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:52:55,341 INFO L225 Difference]: With dead ends: 971 [2019-11-07 00:52:55,341 INFO L226 Difference]: Without dead ends: 625 [2019-11-07 00:52:55,348 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:52:55,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2019-11-07 00:52:55,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 624. [2019-11-07 00:52:55,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 624 states. [2019-11-07 00:52:55,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 624 states to 624 states and 846 transitions. [2019-11-07 00:52:55,416 INFO L78 Accepts]: Start accepts. Automaton has 624 states and 846 transitions. Word has length 174 [2019-11-07 00:52:55,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:52:55,418 INFO L462 AbstractCegarLoop]: Abstraction has 624 states and 846 transitions. [2019-11-07 00:52:55,418 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:52:55,418 INFO L276 IsEmpty]: Start isEmpty. Operand 624 states and 846 transitions. [2019-11-07 00:52:55,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2019-11-07 00:52:55,426 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:52:55,427 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-11-07 00:52:55,427 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:52:55,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:52:55,427 INFO L82 PathProgramCache]: Analyzing trace with hash 617230005, now seen corresponding path program 1 times [2019-11-07 00:52:55,428 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:52:55,428 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687982144] [2019-11-07 00:52:55,428 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:52:55,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:55,590 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-11-07 00:52:55,590 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687982144] [2019-11-07 00:52:55,590 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:52:55,591 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:52:55,591 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511055688] [2019-11-07 00:52:55,593 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:52:55,595 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:52:55,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:52:55,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:52:55,596 INFO L87 Difference]: Start difference. First operand 624 states and 846 transitions. Second operand 3 states. [2019-11-07 00:52:55,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:52:55,646 INFO L93 Difference]: Finished difference Result 1226 states and 1693 transitions. [2019-11-07 00:52:55,646 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:52:55,646 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 180 [2019-11-07 00:52:55,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:52:55,653 INFO L225 Difference]: With dead ends: 1226 [2019-11-07 00:52:55,653 INFO L226 Difference]: Without dead ends: 667 [2019-11-07 00:52:55,656 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:52:55,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2019-11-07 00:52:55,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 666. [2019-11-07 00:52:55,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 666 states. [2019-11-07 00:52:55,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 666 states to 666 states and 918 transitions. [2019-11-07 00:52:55,693 INFO L78 Accepts]: Start accepts. Automaton has 666 states and 918 transitions. Word has length 180 [2019-11-07 00:52:55,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:52:55,694 INFO L462 AbstractCegarLoop]: Abstraction has 666 states and 918 transitions. [2019-11-07 00:52:55,694 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:52:55,694 INFO L276 IsEmpty]: Start isEmpty. Operand 666 states and 918 transitions. [2019-11-07 00:52:55,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2019-11-07 00:52:55,699 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:52:55,699 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-11-07 00:52:55,700 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:52:55,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:52:55,703 INFO L82 PathProgramCache]: Analyzing trace with hash -1159489603, now seen corresponding path program 1 times [2019-11-07 00:52:55,703 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:52:55,704 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501318365] [2019-11-07 00:52:55,704 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:52:55,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:56,084 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-11-07 00:52:56,086 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501318365] [2019-11-07 00:52:56,086 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:52:56,086 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 00:52:56,087 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75681402] [2019-11-07 00:52:56,087 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:52:56,088 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:52:56,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:52:56,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 00:52:56,090 INFO L87 Difference]: Start difference. First operand 666 states and 918 transitions. Second operand 7 states. [2019-11-07 00:52:59,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:52:59,809 INFO L93 Difference]: Finished difference Result 1350 states and 1817 transitions. [2019-11-07 00:52:59,809 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-07 00:52:59,810 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 181 [2019-11-07 00:52:59,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:52:59,816 INFO L225 Difference]: With dead ends: 1350 [2019-11-07 00:52:59,817 INFO L226 Difference]: Without dead ends: 1015 [2019-11-07 00:52:59,818 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-11-07 00:52:59,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1015 states. [2019-11-07 00:52:59,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1015 to 1006. [2019-11-07 00:52:59,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1006 states. [2019-11-07 00:52:59,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1006 states to 1006 states and 1364 transitions. [2019-11-07 00:52:59,869 INFO L78 Accepts]: Start accepts. Automaton has 1006 states and 1364 transitions. Word has length 181 [2019-11-07 00:52:59,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:52:59,870 INFO L462 AbstractCegarLoop]: Abstraction has 1006 states and 1364 transitions. [2019-11-07 00:52:59,870 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 00:52:59,870 INFO L276 IsEmpty]: Start isEmpty. Operand 1006 states and 1364 transitions. [2019-11-07 00:52:59,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2019-11-07 00:52:59,874 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:52:59,874 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-11-07 00:52:59,875 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:52:59,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:52:59,875 INFO L82 PathProgramCache]: Analyzing trace with hash -1387990107, now seen corresponding path program 1 times [2019-11-07 00:52:59,875 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:52:59,876 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587310822] [2019-11-07 00:52:59,876 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:52:59,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:53:00,290 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-11-07 00:53:00,290 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587310822] [2019-11-07 00:53:00,291 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:53:00,291 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2019-11-07 00:53:00,291 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711105341] [2019-11-07 00:53:00,292 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-11-07 00:53:00,292 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:53:00,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-11-07 00:53:00,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=343, Unknown=0, NotChecked=0, Total=380 [2019-11-07 00:53:00,293 INFO L87 Difference]: Start difference. First operand 1006 states and 1364 transitions. Second operand 20 states. [2019-11-07 00:53:00,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:53:00,828 INFO L93 Difference]: Finished difference Result 1797 states and 2425 transitions. [2019-11-07 00:53:00,829 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-11-07 00:53:00,829 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 182 [2019-11-07 00:53:00,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:53:00,837 INFO L225 Difference]: With dead ends: 1797 [2019-11-07 00:53:00,837 INFO L226 Difference]: Without dead ends: 1116 [2019-11-07 00:53:00,840 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=69, Invalid=687, Unknown=0, NotChecked=0, Total=756 [2019-11-07 00:53:00,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1116 states. [2019-11-07 00:53:00,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1116 to 1114. [2019-11-07 00:53:00,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1114 states. [2019-11-07 00:53:00,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1114 states to 1114 states and 1517 transitions. [2019-11-07 00:53:00,894 INFO L78 Accepts]: Start accepts. Automaton has 1114 states and 1517 transitions. Word has length 182 [2019-11-07 00:53:00,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:53:00,895 INFO L462 AbstractCegarLoop]: Abstraction has 1114 states and 1517 transitions. [2019-11-07 00:53:00,895 INFO L463 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-11-07 00:53:00,895 INFO L276 IsEmpty]: Start isEmpty. Operand 1114 states and 1517 transitions. [2019-11-07 00:53:00,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2019-11-07 00:53:00,899 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:53:00,900 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:53:00,900 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:53:00,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:53:00,901 INFO L82 PathProgramCache]: Analyzing trace with hash -1283396091, now seen corresponding path program 1 times [2019-11-07 00:53:00,901 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:53:00,901 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103411553] [2019-11-07 00:53:00,902 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:53:00,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:53:01,148 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-11-07 00:53:01,148 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103411553] [2019-11-07 00:53:01,148 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:53:01,149 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-07 00:53:01,149 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511646513] [2019-11-07 00:53:01,150 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-07 00:53:01,150 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:53:01,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-07 00:53:01,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-11-07 00:53:01,151 INFO L87 Difference]: Start difference. First operand 1114 states and 1517 transitions. Second operand 8 states. [2019-11-07 00:53:02,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:53:02,641 INFO L93 Difference]: Finished difference Result 2531 states and 3406 transitions. [2019-11-07 00:53:02,641 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-07 00:53:02,642 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 191 [2019-11-07 00:53:02,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:53:02,659 INFO L225 Difference]: With dead ends: 2531 [2019-11-07 00:53:02,659 INFO L226 Difference]: Without dead ends: 1942 [2019-11-07 00:53:02,666 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2019-11-07 00:53:02,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1942 states. [2019-11-07 00:53:02,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1942 to 1923. [2019-11-07 00:53:02,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1923 states. [2019-11-07 00:53:02,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1923 states to 1923 states and 2602 transitions. [2019-11-07 00:53:02,799 INFO L78 Accepts]: Start accepts. Automaton has 1923 states and 2602 transitions. Word has length 191 [2019-11-07 00:53:02,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:53:02,799 INFO L462 AbstractCegarLoop]: Abstraction has 1923 states and 2602 transitions. [2019-11-07 00:53:02,800 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-07 00:53:02,800 INFO L276 IsEmpty]: Start isEmpty. Operand 1923 states and 2602 transitions. [2019-11-07 00:53:02,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2019-11-07 00:53:02,805 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:53:02,805 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-11-07 00:53:02,805 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:53:02,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:53:02,806 INFO L82 PathProgramCache]: Analyzing trace with hash -1332265395, now seen corresponding path program 1 times [2019-11-07 00:53:02,806 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:53:02,806 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336722119] [2019-11-07 00:53:02,806 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:53:02,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:53:03,231 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-11-07 00:53:03,231 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336722119] [2019-11-07 00:53:03,232 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:53:03,232 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2019-11-07 00:53:03,232 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628294236] [2019-11-07 00:53:03,233 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-11-07 00:53:03,233 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:53:03,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-11-07 00:53:03,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2019-11-07 00:53:03,234 INFO L87 Difference]: Start difference. First operand 1923 states and 2602 transitions. Second operand 19 states. [2019-11-07 00:53:04,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:53:04,284 INFO L93 Difference]: Finished difference Result 2696 states and 3632 transitions. [2019-11-07 00:53:04,285 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-11-07 00:53:04,285 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 192 [2019-11-07 00:53:04,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:53:04,298 INFO L225 Difference]: With dead ends: 2696 [2019-11-07 00:53:04,299 INFO L226 Difference]: Without dead ends: 1922 [2019-11-07 00:53:04,303 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=115, Invalid=1075, Unknown=0, NotChecked=0, Total=1190 [2019-11-07 00:53:04,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1922 states. [2019-11-07 00:53:04,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1922 to 1921. [2019-11-07 00:53:04,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1921 states. [2019-11-07 00:53:04,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1921 states to 1921 states and 2597 transitions. [2019-11-07 00:53:04,398 INFO L78 Accepts]: Start accepts. Automaton has 1921 states and 2597 transitions. Word has length 192 [2019-11-07 00:53:04,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:53:04,399 INFO L462 AbstractCegarLoop]: Abstraction has 1921 states and 2597 transitions. [2019-11-07 00:53:04,399 INFO L463 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-11-07 00:53:04,399 INFO L276 IsEmpty]: Start isEmpty. Operand 1921 states and 2597 transitions. [2019-11-07 00:53:04,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2019-11-07 00:53:04,404 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:53:04,404 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-11-07 00:53:04,405 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:53:04,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:53:04,405 INFO L82 PathProgramCache]: Analyzing trace with hash 732896675, now seen corresponding path program 2 times [2019-11-07 00:53:04,405 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:53:04,406 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590830650] [2019-11-07 00:53:04,406 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:53:04,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:53:04,623 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-11-07 00:53:04,623 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590830650] [2019-11-07 00:53:04,624 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1068761576] [2019-11-07 00:53:04,624 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 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:53:05,152 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2019-11-07 00:53:05,153 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-07 00:53:05,162 INFO L256 TraceCheckSpWp]: Trace formula consists of 2228 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-07 00:53:05,181 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:53:05,517 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-11-07 00:53:05,517 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:53:05,989 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-11-07 00:53:05,989 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:53:05,990 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [11] total 23 [2019-11-07 00:53:05,990 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428645213] [2019-11-07 00:53:05,991 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-07 00:53:05,991 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:53:05,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-07 00:53:05,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2019-11-07 00:53:05,992 INFO L87 Difference]: Start difference. First operand 1921 states and 2597 transitions. Second operand 14 states. [2019-11-07 00:53:08,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:53:08,383 INFO L93 Difference]: Finished difference Result 5735 states and 7790 transitions. [2019-11-07 00:53:08,383 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-11-07 00:53:08,384 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 192 [2019-11-07 00:53:08,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:53:08,426 INFO L225 Difference]: With dead ends: 5735 [2019-11-07 00:53:08,427 INFO L226 Difference]: Without dead ends: 5732 [2019-11-07 00:53:08,432 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 378 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=178, Invalid=1228, Unknown=0, NotChecked=0, Total=1406 [2019-11-07 00:53:08,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5732 states. [2019-11-07 00:53:08,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5732 to 4099. [2019-11-07 00:53:08,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4099 states. [2019-11-07 00:53:08,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4099 states to 4099 states and 5625 transitions. [2019-11-07 00:53:08,721 INFO L78 Accepts]: Start accepts. Automaton has 4099 states and 5625 transitions. Word has length 192 [2019-11-07 00:53:08,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:53:08,723 INFO L462 AbstractCegarLoop]: Abstraction has 4099 states and 5625 transitions. [2019-11-07 00:53:08,723 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-07 00:53:08,723 INFO L276 IsEmpty]: Start isEmpty. Operand 4099 states and 5625 transitions. [2019-11-07 00:53:08,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2019-11-07 00:53:08,735 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:53:08,735 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2019-11-07 00:53:08,953 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:53:08,953 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:53:08,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:53:08,954 INFO L82 PathProgramCache]: Analyzing trace with hash 439688581, now seen corresponding path program 1 times [2019-11-07 00:53:08,954 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:53:08,954 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891488556] [2019-11-07 00:53:08,955 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:53:09,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:53:09,128 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-11-07 00:53:09,129 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891488556] [2019-11-07 00:53:09,129 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1907032187] [2019-11-07 00:53:09,129 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:53:09,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:53:09,705 INFO L256 TraceCheckSpWp]: Trace formula consists of 2962 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-07 00:53:09,718 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:53:09,889 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-11-07 00:53:09,889 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:53:10,206 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:53:10,253 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:53:10,288 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-11-07 00:53:10,288 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 00:53:10,288 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 16 [2019-11-07 00:53:10,289 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785609637] [2019-11-07 00:53:10,289 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:53:10,289 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:53:10,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:53:10,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2019-11-07 00:53:10,290 INFO L87 Difference]: Start difference. First operand 4099 states and 5625 transitions. Second operand 7 states. [2019-11-07 00:53:12,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:53:12,420 INFO L93 Difference]: Finished difference Result 8171 states and 11221 transitions. [2019-11-07 00:53:12,420 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 00:53:12,420 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 195 [2019-11-07 00:53:12,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:53:12,444 INFO L225 Difference]: With dead ends: 8171 [2019-11-07 00:53:12,445 INFO L226 Difference]: Without dead ends: 4111 [2019-11-07 00:53:12,459 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 379 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2019-11-07 00:53:12,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4111 states. [2019-11-07 00:53:12,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4111 to 4101. [2019-11-07 00:53:12,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4101 states. [2019-11-07 00:53:12,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4101 states to 4101 states and 5628 transitions. [2019-11-07 00:53:12,747 INFO L78 Accepts]: Start accepts. Automaton has 4101 states and 5628 transitions. Word has length 195 [2019-11-07 00:53:12,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:53:12,747 INFO L462 AbstractCegarLoop]: Abstraction has 4101 states and 5628 transitions. [2019-11-07 00:53:12,747 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 00:53:12,747 INFO L276 IsEmpty]: Start isEmpty. Operand 4101 states and 5628 transitions. [2019-11-07 00:53:12,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2019-11-07 00:53:12,757 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:53:12,757 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 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] [2019-11-07 00:53:12,964 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:53:12,965 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:53:12,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:53:12,966 INFO L82 PathProgramCache]: Analyzing trace with hash 1294950284, now seen corresponding path program 1 times [2019-11-07 00:53:12,966 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:53:12,966 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787855144] [2019-11-07 00:53:12,966 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:53:13,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:53:13,124 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-11-07 00:53:13,129 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787855144] [2019-11-07 00:53:13,129 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1291424639] [2019-11-07 00:53:13,129 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:53:13,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:53:13,799 INFO L256 TraceCheckSpWp]: Trace formula consists of 2960 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-07 00:53:13,807 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:53:13,942 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-11-07 00:53:13,942 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:53:14,290 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:53:14,367 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:53:14,445 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:53:14,537 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-11-07 00:53:14,537 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 00:53:14,538 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7, 9] total 20 [2019-11-07 00:53:14,538 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072217132] [2019-11-07 00:53:14,539 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-07 00:53:14,539 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:53:14,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-07 00:53:14,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2019-11-07 00:53:14,540 INFO L87 Difference]: Start difference. First operand 4101 states and 5628 transitions. Second operand 9 states. [2019-11-07 00:53:17,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:53:17,196 INFO L93 Difference]: Finished difference Result 8178 states and 11231 transitions. [2019-11-07 00:53:17,197 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-07 00:53:17,197 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 196 [2019-11-07 00:53:17,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:53:17,219 INFO L225 Difference]: With dead ends: 8178 [2019-11-07 00:53:17,220 INFO L226 Difference]: Without dead ends: 4119 [2019-11-07 00:53:17,234 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 401 GetRequests, 376 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2019-11-07 00:53:17,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4119 states. [2019-11-07 00:53:17,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4119 to 4117. [2019-11-07 00:53:17,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4117 states. [2019-11-07 00:53:17,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4117 states to 4117 states and 5644 transitions. [2019-11-07 00:53:17,415 INFO L78 Accepts]: Start accepts. Automaton has 4117 states and 5644 transitions. Word has length 196 [2019-11-07 00:53:17,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:53:17,416 INFO L462 AbstractCegarLoop]: Abstraction has 4117 states and 5644 transitions. [2019-11-07 00:53:17,416 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-07 00:53:17,416 INFO L276 IsEmpty]: Start isEmpty. Operand 4117 states and 5644 transitions. [2019-11-07 00:53:17,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2019-11-07 00:53:17,425 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:53:17,426 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2019-11-07 00:53:17,632 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:53:17,632 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:53:17,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:53:17,633 INFO L82 PathProgramCache]: Analyzing trace with hash 667475302, now seen corresponding path program 1 times [2019-11-07 00:53:17,633 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:53:17,633 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794647327] [2019-11-07 00:53:17,633 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:53:17,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:53:17,775 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-11-07 00:53:17,776 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794647327] [2019-11-07 00:53:17,776 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [682604567] [2019-11-07 00:53:17,776 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:53:18,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:53:18,509 INFO L256 TraceCheckSpWp]: Trace formula consists of 2961 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-07 00:53:18,516 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:53:18,692 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-11-07 00:53:18,693 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:53:19,054 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:53:19,149 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:53:19,215 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:53:19,338 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-11-07 00:53:19,339 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:53:19,339 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [7] total 21 [2019-11-07 00:53:19,339 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538368412] [2019-11-07 00:53:19,340 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-07 00:53:19,340 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:53:19,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-07 00:53:19,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2019-11-07 00:53:19,341 INFO L87 Difference]: Start difference. First operand 4117 states and 5644 transitions. Second operand 16 states. [2019-11-07 00:53:21,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:53:21,505 INFO L93 Difference]: Finished difference Result 8170 states and 11212 transitions. [2019-11-07 00:53:21,505 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-07 00:53:21,505 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 197 [2019-11-07 00:53:21,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:53:21,540 INFO L225 Difference]: With dead ends: 8170 [2019-11-07 00:53:21,540 INFO L226 Difference]: Without dead ends: 4141 [2019-11-07 00:53:21,557 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 378 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=504, Unknown=0, NotChecked=0, Total=600 [2019-11-07 00:53:21,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4141 states. [2019-11-07 00:53:21,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4141 to 4139. [2019-11-07 00:53:21,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4139 states. [2019-11-07 00:53:21,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4139 states to 4139 states and 5669 transitions. [2019-11-07 00:53:21,868 INFO L78 Accepts]: Start accepts. Automaton has 4139 states and 5669 transitions. Word has length 197 [2019-11-07 00:53:21,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:53:21,868 INFO L462 AbstractCegarLoop]: Abstraction has 4139 states and 5669 transitions. [2019-11-07 00:53:21,869 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-07 00:53:21,869 INFO L276 IsEmpty]: Start isEmpty. Operand 4139 states and 5669 transitions. [2019-11-07 00:53:21,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2019-11-07 00:53:21,878 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:53:21,879 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2019-11-07 00:53:22,086 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:53:22,086 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:53:22,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:53:22,087 INFO L82 PathProgramCache]: Analyzing trace with hash 1092618078, now seen corresponding path program 2 times [2019-11-07 00:53:22,087 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:53:22,087 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944332161] [2019-11-07 00:53:22,087 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:53:22,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:53:22,225 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-07 00:53:22,226 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944332161] [2019-11-07 00:53:22,226 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [233998855] [2019-11-07 00:53:22,226 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 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:53:22,843 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-11-07 00:53:22,843 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-07 00:53:22,852 INFO L256 TraceCheckSpWp]: Trace formula consists of 2857 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-07 00:53:22,859 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:53:22,942 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-11-07 00:53:22,943 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:53:23,163 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:53:23,203 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms