/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_spec3_product30.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 00:51:03,766 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 00:51:03,769 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 00:51:03,786 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 00:51:03,786 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 00:51:03,788 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 00:51:03,789 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 00:51:03,791 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 00:51:03,793 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 00:51:03,794 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 00:51:03,795 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 00:51:03,796 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 00:51:03,796 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 00:51:03,797 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 00:51:03,798 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 00:51:03,799 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 00:51:03,800 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 00:51:03,801 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 00:51:03,803 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 00:51:03,805 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 00:51:03,806 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 00:51:03,807 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 00:51:03,809 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 00:51:03,809 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 00:51:03,812 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 00:51:03,812 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 00:51:03,812 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 00:51:03,813 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 00:51:03,814 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 00:51:03,814 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 00:51:03,815 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 00:51:03,816 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 00:51:03,816 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 00:51:03,817 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 00:51:03,818 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 00:51:03,818 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 00:51:03,819 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 00:51:03,819 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 00:51:03,819 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 00:51:03,820 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 00:51:03,824 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 00:51:03,825 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 00:51:03,846 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 00:51:03,847 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 00:51:03,849 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 00:51:03,849 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 00:51:03,849 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 00:51:03,850 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 00:51:03,850 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 00:51:03,850 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 00:51:03,850 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 00:51:03,850 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 00:51:03,851 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 00:51:03,852 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 00:51:03,852 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 00:51:03,852 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 00:51:03,853 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 00:51:03,853 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 00:51:03,853 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 00:51:03,853 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 00:51:03,854 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 00:51:03,854 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 00:51:03,854 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 00:51:03,854 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:51:03,855 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 00:51:03,855 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 00:51:03,855 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 00:51:03,855 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 00:51:03,855 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 00:51:03,856 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 00:51:03,856 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 00:51:04,147 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 00:51:04,164 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 00:51:04,168 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 00:51:04,170 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 00:51:04,171 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 00:51:04,171 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec3_product30.cil.c [2019-11-07 00:51:04,253 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07fb37b86/9c6c4832b12c48f3aa083c6b451d78c8/FLAGa92cd9031 [2019-11-07 00:51:04,862 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 00:51:04,865 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec3_product30.cil.c [2019-11-07 00:51:04,887 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07fb37b86/9c6c4832b12c48f3aa083c6b451d78c8/FLAGa92cd9031 [2019-11-07 00:51:05,112 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/07fb37b86/9c6c4832b12c48f3aa083c6b451d78c8 [2019-11-07 00:51:05,122 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 00:51:05,124 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 00:51:05,125 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 00:51:05,125 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 00:51:05,129 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 00:51:05,130 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:51:05" (1/1) ... [2019-11-07 00:51:05,133 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27dd12fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:51:05, skipping insertion in model container [2019-11-07 00:51:05,133 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:51:05" (1/1) ... [2019-11-07 00:51:05,141 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 00:51:05,219 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 00:51:05,960 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:51:05,986 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 00:51:06,147 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:51:06,297 INFO L192 MainTranslator]: Completed translation [2019-11-07 00:51:06,298 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:51:06 WrapperNode [2019-11-07 00:51:06,299 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 00:51:06,300 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 00:51:06,300 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 00:51:06,301 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 00:51:06,322 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:51:06" (1/1) ... [2019-11-07 00:51:06,323 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:51:06" (1/1) ... [2019-11-07 00:51:06,397 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:51:06" (1/1) ... [2019-11-07 00:51:06,398 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:51:06" (1/1) ... [2019-11-07 00:51:06,469 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:51:06" (1/1) ... [2019-11-07 00:51:06,491 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:51:06" (1/1) ... [2019-11-07 00:51:06,508 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:51:06" (1/1) ... [2019-11-07 00:51:06,538 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 00:51:06,538 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 00:51:06,538 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 00:51:06,541 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 00:51:06,542 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:51:06" (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 00:51:06,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 00:51:06,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 00:51:06,609 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 00:51:06,609 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-11-07 00:51:06,609 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__AutoResponder [2019-11-07 00:51:06,609 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Sign [2019-11-07 00:51:06,610 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-11-07 00:51:06,610 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable__wrappee__Keys [2019-11-07 00:51:06,610 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-11-07 00:51:06,610 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-11-07 00:51:06,611 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-11-07 00:51:06,611 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 00:51:06,611 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-11-07 00:51:06,611 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-11-07 00:51:06,611 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-11-07 00:51:06,612 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-11-07 00:51:06,612 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-11-07 00:51:06,612 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-11-07 00:51:06,612 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-11-07 00:51:06,613 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-11-07 00:51:06,613 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-11-07 00:51:06,613 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-11-07 00:51:06,614 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-11-07 00:51:06,614 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-11-07 00:51:06,614 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-11-07 00:51:06,614 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-11-07 00:51:06,614 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-11-07 00:51:06,614 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-11-07 00:51:06,615 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-11-07 00:51:06,615 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-11-07 00:51:06,615 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-11-07 00:51:06,615 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-11-07 00:51:06,615 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-11-07 00:51:06,616 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 00:51:06,616 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 00:51:06,616 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 00:51:06,616 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 00:51:06,616 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 00:51:06,616 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 00:51:06,617 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-11-07 00:51:06,617 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-11-07 00:51:06,617 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-11-07 00:51:06,617 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-11-07 00:51:06,617 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-11-07 00:51:06,618 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-11-07 00:51:06,618 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-11-07 00:51:06,618 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-11-07 00:51:06,618 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 00:51:06,618 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 00:51:06,618 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-11-07 00:51:06,619 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-11-07 00:51:06,619 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-11-07 00:51:06,619 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-11-07 00:51:06,619 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-11-07 00:51:06,619 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-11-07 00:51:06,619 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-11-07 00:51:06,619 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-11-07 00:51:06,620 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-11-07 00:51:06,620 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhSetAutoRespond [2019-11-07 00:51:06,620 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 00:51:06,620 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 00:51:06,620 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 00:51:06,620 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 00:51:06,621 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 00:51:06,621 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-11-07 00:51:06,621 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-11-07 00:51:06,621 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__AutoResponder [2019-11-07 00:51:06,621 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-11-07 00:51:06,621 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-11-07 00:51:06,621 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Encrypt [2019-11-07 00:51:06,621 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-11-07 00:51:06,622 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Verify [2019-11-07 00:51:06,622 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-11-07 00:51:06,622 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-11-07 00:51:06,622 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-11-07 00:51:06,622 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-11-07 00:51:06,622 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-11-07 00:51:06,623 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-11-07 00:51:06,623 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-11-07 00:51:06,623 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-11-07 00:51:06,623 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-11-07 00:51:06,623 INFO L138 BoogieDeclarations]: Found implementation of procedure autoRespond [2019-11-07 00:51:06,623 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-11-07 00:51:06,623 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-11-07 00:51:06,624 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__SignVerify_spec__1 [2019-11-07 00:51:06,624 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__SignVerify_spec__2 [2019-11-07 00:51:06,624 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-11-07 00:51:06,624 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-11-07 00:51:06,624 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-11-07 00:51:06,624 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-11-07 00:51:06,624 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-11-07 00:51:06,625 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-11-07 00:51:06,625 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-11-07 00:51:06,625 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-11-07 00:51:06,625 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-11-07 00:51:06,625 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-11-07 00:51:06,625 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-11-07 00:51:06,626 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-11-07 00:51:06,626 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-11-07 00:51:06,626 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-11-07 00:51:06,626 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-11-07 00:51:06,626 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-11-07 00:51:06,626 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-11-07 00:51:06,626 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-11-07 00:51:06,626 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-11-07 00:51:06,627 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-11-07 00:51:06,627 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-11-07 00:51:06,627 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-11-07 00:51:06,627 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-11-07 00:51:06,627 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-11-07 00:51:06,627 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-11-07 00:51:06,627 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-11-07 00:51:06,628 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-11-07 00:51:06,628 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-11-07 00:51:06,628 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-11-07 00:51:06,628 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-11-07 00:51:06,628 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 00:51:06,628 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 00:51:06,629 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 00:51:06,629 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-11-07 00:51:06,629 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-11-07 00:51:06,629 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-11-07 00:51:06,629 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-11-07 00:51:06,629 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-11-07 00:51:06,629 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-11-07 00:51:06,630 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-11-07 00:51:06,630 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-11-07 00:51:06,630 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-11-07 00:51:06,630 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-11-07 00:51:06,630 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-11-07 00:51:06,630 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-11-07 00:51:06,630 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-11-07 00:51:06,631 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-11-07 00:51:06,631 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-11-07 00:51:06,631 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 00:51:06,631 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__AutoResponder [2019-11-07 00:51:06,631 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Sign [2019-11-07 00:51:06,631 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable__wrappee__Keys [2019-11-07 00:51:06,632 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 00:51:06,632 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-11-07 00:51:06,632 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-11-07 00:51:06,632 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-11-07 00:51:06,632 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-11-07 00:51:06,632 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-11-07 00:51:06,632 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-11-07 00:51:06,633 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-11-07 00:51:06,633 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-11-07 00:51:06,633 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-11-07 00:51:06,633 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-11-07 00:51:06,633 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-11-07 00:51:06,633 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 00:51:06,633 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 00:51:06,634 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 00:51:06,634 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 00:51:06,634 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 00:51:06,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 00:51:06,634 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 00:51:06,634 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 00:51:06,634 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 00:51:06,634 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 00:51:06,635 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 00:51:06,635 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 00:51:06,635 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 00:51:06,635 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 00:51:06,635 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 00:51:06,635 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 00:51:06,635 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-11-07 00:51:06,635 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-11-07 00:51:06,636 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-11-07 00:51:06,636 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-11-07 00:51:06,636 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-11-07 00:51:06,636 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-11-07 00:51:06,636 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-11-07 00:51:06,636 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-11-07 00:51:06,636 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-11-07 00:51:06,636 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 00:51:06,637 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 00:51:06,637 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 00:51:06,637 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-11-07 00:51:06,637 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-11-07 00:51:06,637 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-11-07 00:51:06,637 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-11-07 00:51:06,637 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-11-07 00:51:06,638 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-11-07 00:51:06,638 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-11-07 00:51:06,638 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-11-07 00:51:06,638 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-11-07 00:51:06,638 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-11-07 00:51:06,638 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-11-07 00:51:06,638 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 00:51:06,638 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 00:51:06,639 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 00:51:06,639 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-11-07 00:51:06,639 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-11-07 00:51:06,639 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-11-07 00:51:06,639 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-11-07 00:51:06,639 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-11-07 00:51:06,639 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-11-07 00:51:06,640 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-11-07 00:51:06,640 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-11-07 00:51:06,640 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-11-07 00:51:06,640 INFO L130 BoogieDeclarations]: Found specification of procedure rjhSetAutoRespond [2019-11-07 00:51:06,640 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-11-07 00:51:06,640 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-11-07 00:51:06,640 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-11-07 00:51:06,641 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 00:51:06,641 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-11-07 00:51:06,641 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-11-07 00:51:06,641 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-11-07 00:51:06,641 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-11-07 00:51:06,641 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-11-07 00:51:06,641 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-11-07 00:51:06,642 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-11-07 00:51:06,642 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-11-07 00:51:06,642 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-11-07 00:51:06,642 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-11-07 00:51:06,642 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-11-07 00:51:06,642 INFO L130 BoogieDeclarations]: Found specification of procedure autoRespond [2019-11-07 00:51:06,642 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-11-07 00:51:06,642 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-11-07 00:51:06,643 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__SignVerify_spec__1 [2019-11-07 00:51:06,643 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-11-07 00:51:06,643 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__AutoResponder [2019-11-07 00:51:06,643 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Encrypt [2019-11-07 00:51:06,643 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-11-07 00:51:06,643 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Verify [2019-11-07 00:51:06,643 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__SignVerify_spec__2 [2019-11-07 00:51:06,644 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-11-07 00:51:06,644 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-11-07 00:51:06,644 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-11-07 00:51:06,644 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-11-07 00:51:06,644 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-11-07 00:51:06,644 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-11-07 00:51:06,644 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-11-07 00:51:06,645 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-11-07 00:51:06,645 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-11-07 00:51:06,645 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-11-07 00:51:06,645 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-11-07 00:51:06,645 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-11-07 00:51:06,645 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-11-07 00:51:06,646 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-11-07 00:51:06,646 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-11-07 00:51:06,646 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-11-07 00:51:06,646 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-11-07 00:51:06,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 00:51:06,646 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 00:51:06,646 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 00:51:09,026 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 00:51:09,026 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-07 00:51:09,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:51:09 BoogieIcfgContainer [2019-11-07 00:51:09,028 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 00:51:09,029 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 00:51:09,030 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 00:51:09,033 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 00:51:09,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:51:05" (1/3) ... [2019-11-07 00:51:09,034 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66c098e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:51:09, skipping insertion in model container [2019-11-07 00:51:09,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:51:06" (2/3) ... [2019-11-07 00:51:09,035 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66c098e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:51:09, skipping insertion in model container [2019-11-07 00:51:09,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:51:09" (3/3) ... [2019-11-07 00:51:09,037 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec3_product30.cil.c [2019-11-07 00:51:09,048 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 00:51:09,064 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 00:51:09,075 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 00:51:09,119 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 00:51:09,119 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 00:51:09,123 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 00:51:09,123 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 00:51:09,123 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 00:51:09,124 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 00:51:09,124 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 00:51:09,124 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 00:51:09,164 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states. [2019-11-07 00:51:09,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2019-11-07 00:51:09,211 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:51:09,213 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:51:09,214 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:51:09,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:51:09,219 INFO L82 PathProgramCache]: Analyzing trace with hash 1721519425, now seen corresponding path program 1 times [2019-11-07 00:51:09,229 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:51:09,230 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361918488] [2019-11-07 00:51:09,230 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:51:09,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:51:09,932 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-11-07 00:51:09,932 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361918488] [2019-11-07 00:51:09,933 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:51:09,934 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 00:51:09,934 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657200063] [2019-11-07 00:51:09,940 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 00:51:09,941 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:51:09,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 00:51:09,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 00:51:09,959 INFO L87 Difference]: Start difference. First operand 556 states. Second operand 2 states. [2019-11-07 00:51:10,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:51:10,051 INFO L93 Difference]: Finished difference Result 798 states and 1059 transitions. [2019-11-07 00:51:10,051 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 00:51:10,052 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 195 [2019-11-07 00:51:10,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:51:10,074 INFO L225 Difference]: With dead ends: 798 [2019-11-07 00:51:10,074 INFO L226 Difference]: Without dead ends: 505 [2019-11-07 00:51:10,081 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 00:51:10,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2019-11-07 00:51:10,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 505. [2019-11-07 00:51:10,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 505 states. [2019-11-07 00:51:10,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 505 states to 505 states and 671 transitions. [2019-11-07 00:51:10,174 INFO L78 Accepts]: Start accepts. Automaton has 505 states and 671 transitions. Word has length 195 [2019-11-07 00:51:10,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:51:10,177 INFO L462 AbstractCegarLoop]: Abstraction has 505 states and 671 transitions. [2019-11-07 00:51:10,177 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 00:51:10,177 INFO L276 IsEmpty]: Start isEmpty. Operand 505 states and 671 transitions. [2019-11-07 00:51:10,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2019-11-07 00:51:10,187 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:51:10,187 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:51:10,188 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:51:10,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:51:10,188 INFO L82 PathProgramCache]: Analyzing trace with hash 1479265370, now seen corresponding path program 1 times [2019-11-07 00:51:10,188 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:51:10,188 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428084114] [2019-11-07 00:51:10,189 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:51:10,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:51:10,584 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-11-07 00:51:10,585 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428084114] [2019-11-07 00:51:10,585 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:51:10,585 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:51:10,585 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328406242] [2019-11-07 00:51:10,587 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:51:10,588 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:51:10,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:51:10,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:51:10,588 INFO L87 Difference]: Start difference. First operand 505 states and 671 transitions. Second operand 3 states. [2019-11-07 00:51:10,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:51:10,672 INFO L93 Difference]: Finished difference Result 781 states and 1022 transitions. [2019-11-07 00:51:10,673 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:51:10,673 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 196 [2019-11-07 00:51:10,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:51:10,682 INFO L225 Difference]: With dead ends: 781 [2019-11-07 00:51:10,682 INFO L226 Difference]: Without dead ends: 508 [2019-11-07 00:51:10,689 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 00:51:10,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2019-11-07 00:51:10,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 507. [2019-11-07 00:51:10,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 507 states. [2019-11-07 00:51:10,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 673 transitions. [2019-11-07 00:51:10,749 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 673 transitions. Word has length 196 [2019-11-07 00:51:10,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:51:10,753 INFO L462 AbstractCegarLoop]: Abstraction has 507 states and 673 transitions. [2019-11-07 00:51:10,753 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:51:10,753 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 673 transitions. [2019-11-07 00:51:10,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2019-11-07 00:51:10,759 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:51:10,760 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:51:10,760 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:51:10,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:51:10,762 INFO L82 PathProgramCache]: Analyzing trace with hash 789958250, now seen corresponding path program 1 times [2019-11-07 00:51:10,762 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:51:10,762 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661052214] [2019-11-07 00:51:10,762 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:51:10,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:51:11,033 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-11-07 00:51:11,033 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661052214] [2019-11-07 00:51:11,033 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:51:11,033 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:51:11,035 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723027891] [2019-11-07 00:51:11,038 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:51:11,040 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:51:11,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:51:11,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:51:11,041 INFO L87 Difference]: Start difference. First operand 507 states and 673 transitions. Second operand 3 states. [2019-11-07 00:51:11,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:51:11,099 INFO L93 Difference]: Finished difference Result 990 states and 1344 transitions. [2019-11-07 00:51:11,100 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:51:11,100 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 206 [2019-11-07 00:51:11,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:51:11,106 INFO L225 Difference]: With dead ends: 990 [2019-11-07 00:51:11,107 INFO L226 Difference]: Without dead ends: 548 [2019-11-07 00:51:11,109 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 00:51:11,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2019-11-07 00:51:11,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 547. [2019-11-07 00:51:11,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 547 states. [2019-11-07 00:51:11,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 742 transitions. [2019-11-07 00:51:11,148 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 742 transitions. Word has length 206 [2019-11-07 00:51:11,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:51:11,151 INFO L462 AbstractCegarLoop]: Abstraction has 547 states and 742 transitions. [2019-11-07 00:51:11,151 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:51:11,151 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 742 transitions. [2019-11-07 00:51:11,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2019-11-07 00:51:11,158 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:51:11,158 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:51:11,159 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:51:11,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:51:11,159 INFO L82 PathProgramCache]: Analyzing trace with hash 688583183, now seen corresponding path program 1 times [2019-11-07 00:51:11,160 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:51:11,160 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102785853] [2019-11-07 00:51:11,160 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:51:11,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:51:11,521 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-11-07 00:51:11,521 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102785853] [2019-11-07 00:51:11,522 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:51:11,522 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:51:11,522 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683812639] [2019-11-07 00:51:11,523 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:51:11,524 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:51:11,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:51:11,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:51:11,525 INFO L87 Difference]: Start difference. First operand 547 states and 742 transitions. Second operand 3 states. [2019-11-07 00:51:11,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:51:11,583 INFO L93 Difference]: Finished difference Result 1107 states and 1546 transitions. [2019-11-07 00:51:11,584 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:51:11,584 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 207 [2019-11-07 00:51:11,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:51:11,592 INFO L225 Difference]: With dead ends: 1107 [2019-11-07 00:51:11,593 INFO L226 Difference]: Without dead ends: 625 [2019-11-07 00:51:11,595 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 00:51:11,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2019-11-07 00:51:11,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 624. [2019-11-07 00:51:11,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 624 states. [2019-11-07 00:51:11,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 624 states to 624 states and 874 transitions. [2019-11-07 00:51:11,634 INFO L78 Accepts]: Start accepts. Automaton has 624 states and 874 transitions. Word has length 207 [2019-11-07 00:51:11,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:51:11,635 INFO L462 AbstractCegarLoop]: Abstraction has 624 states and 874 transitions. [2019-11-07 00:51:11,635 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:51:11,635 INFO L276 IsEmpty]: Start isEmpty. Operand 624 states and 874 transitions. [2019-11-07 00:51:11,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2019-11-07 00:51:11,640 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:51:11,640 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:51:11,640 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:51:11,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:51:11,641 INFO L82 PathProgramCache]: Analyzing trace with hash -1758410390, now seen corresponding path program 1 times [2019-11-07 00:51:11,641 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:51:11,642 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716030873] [2019-11-07 00:51:11,642 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:51:11,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:51:11,890 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-11-07 00:51:11,891 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716030873] [2019-11-07 00:51:11,891 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:51:11,892 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:51:11,892 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313978983] [2019-11-07 00:51:11,893 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:51:11,893 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:51:11,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:51:11,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:51:11,894 INFO L87 Difference]: Start difference. First operand 624 states and 874 transitions. Second operand 3 states. [2019-11-07 00:51:11,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:51:11,938 INFO L93 Difference]: Finished difference Result 1332 states and 1932 transitions. [2019-11-07 00:51:11,938 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:51:11,939 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 208 [2019-11-07 00:51:11,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:51:11,944 INFO L225 Difference]: With dead ends: 1332 [2019-11-07 00:51:11,945 INFO L226 Difference]: Without dead ends: 773 [2019-11-07 00:51:11,947 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 00:51:11,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2019-11-07 00:51:11,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 772. [2019-11-07 00:51:11,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 772 states. [2019-11-07 00:51:11,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 772 states to 772 states and 1126 transitions. [2019-11-07 00:51:11,984 INFO L78 Accepts]: Start accepts. Automaton has 772 states and 1126 transitions. Word has length 208 [2019-11-07 00:51:11,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:51:11,985 INFO L462 AbstractCegarLoop]: Abstraction has 772 states and 1126 transitions. [2019-11-07 00:51:11,985 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:51:11,985 INFO L276 IsEmpty]: Start isEmpty. Operand 772 states and 1126 transitions. [2019-11-07 00:51:11,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2019-11-07 00:51:11,990 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:51:11,990 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:51:11,991 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:51:11,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:51:11,991 INFO L82 PathProgramCache]: Analyzing trace with hash 1379207951, now seen corresponding path program 1 times [2019-11-07 00:51:11,991 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:51:11,992 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893913833] [2019-11-07 00:51:11,992 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:51:12,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:51:12,146 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-11-07 00:51:12,146 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893913833] [2019-11-07 00:51:12,146 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:51:12,146 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:51:12,147 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998090461] [2019-11-07 00:51:12,147 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:51:12,148 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:51:12,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:51:12,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:51:12,148 INFO L87 Difference]: Start difference. First operand 772 states and 1126 transitions. Second operand 3 states. [2019-11-07 00:51:12,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:51:12,198 INFO L93 Difference]: Finished difference Result 1764 states and 2668 transitions. [2019-11-07 00:51:12,198 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:51:12,198 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 209 [2019-11-07 00:51:12,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:51:12,206 INFO L225 Difference]: With dead ends: 1764 [2019-11-07 00:51:12,206 INFO L226 Difference]: Without dead ends: 1057 [2019-11-07 00:51:12,210 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 00:51:12,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1057 states. [2019-11-07 00:51:12,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1057 to 1056. [2019-11-07 00:51:12,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1056 states. [2019-11-07 00:51:12,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1056 states to 1056 states and 1606 transitions. [2019-11-07 00:51:12,259 INFO L78 Accepts]: Start accepts. Automaton has 1056 states and 1606 transitions. Word has length 209 [2019-11-07 00:51:12,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:51:12,260 INFO L462 AbstractCegarLoop]: Abstraction has 1056 states and 1606 transitions. [2019-11-07 00:51:12,260 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:51:12,260 INFO L276 IsEmpty]: Start isEmpty. Operand 1056 states and 1606 transitions. [2019-11-07 00:51:12,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2019-11-07 00:51:12,268 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:51:12,268 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:51:12,269 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:51:12,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:51:12,269 INFO L82 PathProgramCache]: Analyzing trace with hash -1500956376, now seen corresponding path program 1 times [2019-11-07 00:51:12,269 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:51:12,270 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109451687] [2019-11-07 00:51:12,270 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:51:12,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:51:12,829 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-11-07 00:51:12,830 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109451687] [2019-11-07 00:51:12,830 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [196043241] [2019-11-07 00:51:12,830 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:51:13,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:51:13,671 INFO L256 TraceCheckSpWp]: Trace formula consists of 2955 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-07 00:51:13,692 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:51:14,109 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-11-07 00:51:14,110 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:51:14,568 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:51:14,663 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:51:14,749 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:51:14,986 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-11-07 00:51:14,987 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 00:51:14,987 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [19, 9] total 32 [2019-11-07 00:51:14,987 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932115724] [2019-11-07 00:51:14,988 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-07 00:51:14,989 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:51:14,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-07 00:51:14,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=906, Unknown=0, NotChecked=0, Total=992 [2019-11-07 00:51:14,991 INFO L87 Difference]: Start difference. First operand 1056 states and 1606 transitions. Second operand 9 states. [2019-11-07 00:51:16,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:51:16,472 INFO L93 Difference]: Finished difference Result 2090 states and 3192 transitions. [2019-11-07 00:51:16,473 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-07 00:51:16,473 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 212 [2019-11-07 00:51:16,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:51:16,480 INFO L225 Difference]: With dead ends: 2090 [2019-11-07 00:51:16,480 INFO L226 Difference]: Without dead ends: 1070 [2019-11-07 00:51:16,485 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 413 SyntacticMatches, 4 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=107, Invalid=1083, Unknown=0, NotChecked=0, Total=1190 [2019-11-07 00:51:16,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1070 states. [2019-11-07 00:51:16,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1070 to 1070. [2019-11-07 00:51:16,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1070 states. [2019-11-07 00:51:16,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1070 states to 1070 states and 1624 transitions. [2019-11-07 00:51:16,539 INFO L78 Accepts]: Start accepts. Automaton has 1070 states and 1624 transitions. Word has length 212 [2019-11-07 00:51:16,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:51:16,539 INFO L462 AbstractCegarLoop]: Abstraction has 1070 states and 1624 transitions. [2019-11-07 00:51:16,539 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-07 00:51:16,539 INFO L276 IsEmpty]: Start isEmpty. Operand 1070 states and 1624 transitions. [2019-11-07 00:51:16,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 214 [2019-11-07 00:51:16,546 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:51:16,546 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:51:16,754 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:51:16,754 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:51:16,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:51:16,755 INFO L82 PathProgramCache]: Analyzing trace with hash -1105095474, now seen corresponding path program 1 times [2019-11-07 00:51:16,755 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:51:16,755 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587128438] [2019-11-07 00:51:16,755 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:51:16,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:51:17,409 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-11-07 00:51:17,410 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587128438] [2019-11-07 00:51:17,410 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1909422501] [2019-11-07 00:51:17,410 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 00:51:18,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:51:18,068 INFO L256 TraceCheckSpWp]: Trace formula consists of 2956 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-07 00:51:18,077 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:51:18,265 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-11-07 00:51:18,265 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:51:18,625 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:51:18,696 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:51:18,755 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-11-07 00:51:18,756 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 00:51:18,756 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [19, 7] total 28 [2019-11-07 00:51:18,756 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558063114] [2019-11-07 00:51:18,757 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:51:18,757 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:51:18,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:51:18,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=684, Unknown=0, NotChecked=0, Total=756 [2019-11-07 00:51:18,758 INFO L87 Difference]: Start difference. First operand 1070 states and 1624 transitions. Second operand 7 states. [2019-11-07 00:51:20,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:51:20,083 INFO L93 Difference]: Finished difference Result 2091 states and 3202 transitions. [2019-11-07 00:51:20,083 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 00:51:20,083 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 213 [2019-11-07 00:51:20,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:51:20,091 INFO L225 Difference]: With dead ends: 2091 [2019-11-07 00:51:20,091 INFO L226 Difference]: Without dead ends: 1072 [2019-11-07 00:51:20,096 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 451 GetRequests, 420 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 141 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=86, Invalid=784, Unknown=0, NotChecked=0, Total=870 [2019-11-07 00:51:20,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1072 states. [2019-11-07 00:51:20,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1072 to 1072. [2019-11-07 00:51:20,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1072 states. [2019-11-07 00:51:20,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1072 states to 1072 states and 1627 transitions. [2019-11-07 00:51:20,144 INFO L78 Accepts]: Start accepts. Automaton has 1072 states and 1627 transitions. Word has length 213 [2019-11-07 00:51:20,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:51:20,144 INFO L462 AbstractCegarLoop]: Abstraction has 1072 states and 1627 transitions. [2019-11-07 00:51:20,144 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 00:51:20,145 INFO L276 IsEmpty]: Start isEmpty. Operand 1072 states and 1627 transitions. [2019-11-07 00:51:20,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2019-11-07 00:51:20,155 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:51:20,155 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:51:20,373 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:51:20,374 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:51:20,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:51:20,374 INFO L82 PathProgramCache]: Analyzing trace with hash 509202227, now seen corresponding path program 1 times [2019-11-07 00:51:20,374 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:51:20,375 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753588798] [2019-11-07 00:51:20,375 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:51:20,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:51:20,863 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-11-07 00:51:20,863 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753588798] [2019-11-07 00:51:20,864 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [86290734] [2019-11-07 00:51:20,864 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 00:51:21,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:51:21,449 INFO L256 TraceCheckSpWp]: Trace formula consists of 2957 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-07 00:51:21,457 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:51:21,655 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-11-07 00:51:21,655 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:51:21,971 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:51:22,084 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:51:22,167 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:51:22,337 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-11-07 00:51:22,337 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:51:22,338 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [19] total 33 [2019-11-07 00:51:22,338 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306501061] [2019-11-07 00:51:22,339 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-07 00:51:22,339 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:51:22,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-07 00:51:22,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=961, Unknown=0, NotChecked=0, Total=1056 [2019-11-07 00:51:22,341 INFO L87 Difference]: Start difference. First operand 1072 states and 1627 transitions. Second operand 16 states. [2019-11-07 00:51:25,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:51:25,027 INFO L93 Difference]: Finished difference Result 2095 states and 3196 transitions. [2019-11-07 00:51:25,028 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-07 00:51:25,028 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 214 [2019-11-07 00:51:25,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:51:25,036 INFO L225 Difference]: With dead ends: 2095 [2019-11-07 00:51:25,036 INFO L226 Difference]: Without dead ends: 1084 [2019-11-07 00:51:25,045 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 455 GetRequests, 417 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=127, Invalid=1205, Unknown=0, NotChecked=0, Total=1332 [2019-11-07 00:51:25,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1084 states. [2019-11-07 00:51:25,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1084 to 1082. [2019-11-07 00:51:25,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1082 states. [2019-11-07 00:51:25,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1082 states to 1082 states and 1638 transitions. [2019-11-07 00:51:25,089 INFO L78 Accepts]: Start accepts. Automaton has 1082 states and 1638 transitions. Word has length 214 [2019-11-07 00:51:25,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:51:25,089 INFO L462 AbstractCegarLoop]: Abstraction has 1082 states and 1638 transitions. [2019-11-07 00:51:25,089 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-07 00:51:25,090 INFO L276 IsEmpty]: Start isEmpty. Operand 1082 states and 1638 transitions. [2019-11-07 00:51:25,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2019-11-07 00:51:25,096 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:51:25,096 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:51:25,303 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:51:25,303 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:51:25,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:51:25,303 INFO L82 PathProgramCache]: Analyzing trace with hash 1937030847, now seen corresponding path program 2 times [2019-11-07 00:51:25,304 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:51:25,304 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860418155] [2019-11-07 00:51:25,304 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:51:25,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:51:25,704 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-11-07 00:51:25,704 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860418155] [2019-11-07 00:51:25,705 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314803916] [2019-11-07 00:51:25,705 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:51:26,281 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2019-11-07 00:51:26,281 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-07 00:51:26,287 INFO L256 TraceCheckSpWp]: Trace formula consists of 2299 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-07 00:51:26,295 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:51:26,481 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-11-07 00:51:26,481 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:51:26,947 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2019-11-07 00:51:26,947 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:51:26,947 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [19] total 31 [2019-11-07 00:51:26,947 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515311408] [2019-11-07 00:51:26,948 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-07 00:51:26,949 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:51:26,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-07 00:51:26,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=853, Unknown=0, NotChecked=0, Total=930 [2019-11-07 00:51:26,949 INFO L87 Difference]: Start difference. First operand 1082 states and 1638 transitions. Second operand 14 states. [2019-11-07 00:51:29,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:51:29,340 INFO L93 Difference]: Finished difference Result 3438 states and 5266 transitions. [2019-11-07 00:51:29,340 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-11-07 00:51:29,340 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 215 [2019-11-07 00:51:29,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:51:29,364 INFO L225 Difference]: With dead ends: 3438 [2019-11-07 00:51:29,364 INFO L226 Difference]: Without dead ends: 3178 [2019-11-07 00:51:29,367 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 428 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=201, Invalid=1869, Unknown=0, NotChecked=0, Total=2070 [2019-11-07 00:51:29,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3178 states. [2019-11-07 00:51:29,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3178 to 2869. [2019-11-07 00:51:29,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2869 states. [2019-11-07 00:51:29,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2869 states to 2869 states and 4522 transitions. [2019-11-07 00:51:29,553 INFO L78 Accepts]: Start accepts. Automaton has 2869 states and 4522 transitions. Word has length 215 [2019-11-07 00:51:29,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:51:29,557 INFO L462 AbstractCegarLoop]: Abstraction has 2869 states and 4522 transitions. [2019-11-07 00:51:29,557 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-07 00:51:29,557 INFO L276 IsEmpty]: Start isEmpty. Operand 2869 states and 4522 transitions. [2019-11-07 00:51:29,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2019-11-07 00:51:29,585 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:51:29,585 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:51:29,795 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:51:29,795 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:51:29,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:51:29,796 INFO L82 PathProgramCache]: Analyzing trace with hash -235056697, now seen corresponding path program 1 times [2019-11-07 00:51:29,797 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:51:29,797 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564434046] [2019-11-07 00:51:29,797 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:51:29,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:51:30,102 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-11-07 00:51:30,102 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564434046] [2019-11-07 00:51:30,102 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709886051] [2019-11-07 00:51:30,103 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:51:30,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:51:30,752 INFO L256 TraceCheckSpWp]: Trace formula consists of 2959 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-07 00:51:30,758 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:51:30,991 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-11-07 00:51:30,991 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:51:31,312 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:51:31,391 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:51:31,467 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:51:31,603 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-11-07 00:51:31,604 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:51:31,604 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [15] total 28 [2019-11-07 00:51:31,608 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348233242] [2019-11-07 00:51:31,609 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-11-07 00:51:31,609 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:51:31,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-11-07 00:51:31,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=683, Unknown=0, NotChecked=0, Total=756 [2019-11-07 00:51:31,610 INFO L87 Difference]: Start difference. First operand 2869 states and 4522 transitions. Second operand 15 states. [2019-11-07 00:51:33,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:51:33,670 INFO L93 Difference]: Finished difference Result 5632 states and 8920 transitions. [2019-11-07 00:51:33,670 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-07 00:51:33,670 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 216 [2019-11-07 00:51:33,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:51:33,688 INFO L225 Difference]: With dead ends: 5632 [2019-11-07 00:51:33,688 INFO L226 Difference]: Without dead ends: 2875 [2019-11-07 00:51:33,699 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 455 GetRequests, 421 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=102, Invalid=890, Unknown=0, NotChecked=0, Total=992 [2019-11-07 00:51:33,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2875 states. [2019-11-07 00:51:33,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2875 to 2869. [2019-11-07 00:51:33,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2869 states. [2019-11-07 00:51:33,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2869 states to 2869 states and 4520 transitions. [2019-11-07 00:51:33,815 INFO L78 Accepts]: Start accepts. Automaton has 2869 states and 4520 transitions. Word has length 216 [2019-11-07 00:51:33,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:51:33,816 INFO L462 AbstractCegarLoop]: Abstraction has 2869 states and 4520 transitions. [2019-11-07 00:51:33,816 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-11-07 00:51:33,816 INFO L276 IsEmpty]: Start isEmpty. Operand 2869 states and 4520 transitions. [2019-11-07 00:51:33,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2019-11-07 00:51:33,834 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:51:33,834 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:51:34,042 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:51:34,043 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:51:34,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:51:34,043 INFO L82 PathProgramCache]: Analyzing trace with hash -1130769190, now seen corresponding path program 1 times [2019-11-07 00:51:34,043 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:51:34,043 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2004297024] [2019-11-07 00:51:34,043 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:51:34,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:51:34,298 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2019-11-07 00:51:34,299 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2004297024] [2019-11-07 00:51:34,299 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [849206311] [2019-11-07 00:51:34,299 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:51:35,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:51:35,014 INFO L256 TraceCheckSpWp]: Trace formula consists of 2957 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-07 00:51:35,021 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:51:35,154 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2019-11-07 00:51:35,155 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:51:35,406 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:51:35,460 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:51:35,526 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-11-07 00:51:35,526 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:51:35,527 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [15] total 25 [2019-11-07 00:51:35,527 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988709392] [2019-11-07 00:51:35,528 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-07 00:51:35,528 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:51:35,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-07 00:51:35,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2019-11-07 00:51:35,529 INFO L87 Difference]: Start difference. First operand 2869 states and 4520 transitions. Second operand 12 states. [2019-11-07 00:51:37,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:51:37,340 INFO L93 Difference]: Finished difference Result 4141 states and 6412 transitions. [2019-11-07 00:51:37,341 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-07 00:51:37,341 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 217 [2019-11-07 00:51:37,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:51:37,354 INFO L225 Difference]: With dead ends: 4141 [2019-11-07 00:51:37,355 INFO L226 Difference]: Without dead ends: 2136 [2019-11-07 00:51:37,362 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 456 GetRequests, 428 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=88, Invalid=668, Unknown=0, NotChecked=0, Total=756 [2019-11-07 00:51:37,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2136 states. [2019-11-07 00:51:37,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2136 to 2136. [2019-11-07 00:51:37,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2136 states. [2019-11-07 00:51:37,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2136 states to 2136 states and 3279 transitions. [2019-11-07 00:51:37,462 INFO L78 Accepts]: Start accepts. Automaton has 2136 states and 3279 transitions. Word has length 217 [2019-11-07 00:51:37,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:51:37,463 INFO L462 AbstractCegarLoop]: Abstraction has 2136 states and 3279 transitions. [2019-11-07 00:51:37,463 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-07 00:51:37,463 INFO L276 IsEmpty]: Start isEmpty. Operand 2136 states and 3279 transitions. [2019-11-07 00:51:37,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2019-11-07 00:51:37,473 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:51:37,473 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:51:37,726 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:51:37,726 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:51:37,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:51:37,727 INFO L82 PathProgramCache]: Analyzing trace with hash 1693822391, now seen corresponding path program 2 times [2019-11-07 00:51:37,727 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:51:37,727 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545665821] [2019-11-07 00:51:37,727 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:51:37,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:51:38,008 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-11-07 00:51:38,008 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545665821] [2019-11-07 00:51:38,009 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [310771059] [2019-11-07 00:51:38,009 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true