/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/product-lines/email_spec4_product19.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 00:51:51,710 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 00:51:51,713 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 00:51:51,727 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-07 00:51:51,728 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-07 00:51:51,730 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-07 00:51:51,732 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-07 00:51:51,742 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-07 00:51:51,746 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-07 00:51:51,750 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-07 00:51:51,752 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-07 00:51:51,753 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-07 00:51:51,754 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 00:51:51,756 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 00:51:51,757 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 00:51:51,759 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 00:51:51,761 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 00:51:51,762 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 00:51:51,763 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 00:51:51,768 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 00:51:51,772 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 00:51:51,776 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 00:51:51,779 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 00:51:51,779 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 00:51:51,782 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-07 00:51:51,782 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-07 00:51:51,782 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-07 00:51:51,784 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-07 00:51:51,784 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-07 00:51:51,786 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-07 00:51:51,786 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-07 00:51:51,788 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-07 00:51:51,789 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-07 00:51:51,790 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-07 00:51:51,791 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-07 00:51:51,792 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-07 00:51:51,792 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-07 00:51:51,792 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-07 00:51:51,793 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 00:51:51,795 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 00:51:51,796 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 00:51:51,797 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 00:51:51,825 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 00:51:51,831 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 00:51:51,832 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 00:51:51,832 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 00:51:51,833 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 00:51:51,833 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 00:51:51,833 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 00:51:51,833 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 00:51:51,833 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 00:51:51,834 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 00:51:51,837 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 00:51:51,837 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 00:51:51,837 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 00:51:51,838 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 00:51:51,838 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 00:51:51,838 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 00:51:51,838 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 00:51:51,838 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 00:51:51,840 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 00:51:51,840 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 00:51:51,840 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 00:51:51,840 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:51:51,840 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 00:51:51,841 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 00:51:51,841 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 00:51:51,841 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 00:51:51,841 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 00:51:51,841 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 00:51:51,841 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 00:51:52,128 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 00:51:52,141 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 00:51:52,145 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 00:51:52,146 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 00:51:52,147 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 00:51:52,147 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/email_spec4_product19.cil.c [2019-11-07 00:51:52,224 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a40f19a34/36ad810a5c904cb9a9b049e10643272a/FLAG384d459a7 [2019-11-07 00:51:52,872 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 00:51:52,873 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/email_spec4_product19.cil.c [2019-11-07 00:51:52,911 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a40f19a34/36ad810a5c904cb9a9b049e10643272a/FLAG384d459a7 [2019-11-07 00:51:53,063 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a40f19a34/36ad810a5c904cb9a9b049e10643272a [2019-11-07 00:51:53,075 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 00:51:53,077 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 00:51:53,082 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 00:51:53,082 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 00:51:53,086 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 00:51:53,087 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:51:53" (1/1) ... [2019-11-07 00:51:53,091 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22830b92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:51:53, skipping insertion in model container [2019-11-07 00:51:53,091 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:51:53" (1/1) ... [2019-11-07 00:51:53,099 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 00:51:53,176 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 00:51:53,838 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:51:53,857 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 00:51:54,011 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:51:54,099 INFO L192 MainTranslator]: Completed translation [2019-11-07 00:51:54,100 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:51:54 WrapperNode [2019-11-07 00:51:54,100 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 00:51:54,101 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 00:51:54,101 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 00:51:54,101 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 00:51:54,114 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:51:54" (1/1) ... [2019-11-07 00:51:54,115 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:51:54" (1/1) ... [2019-11-07 00:51:54,161 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:51:54" (1/1) ... [2019-11-07 00:51:54,162 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:51:54" (1/1) ... [2019-11-07 00:51:54,228 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:51:54" (1/1) ... [2019-11-07 00:51:54,255 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:51:54" (1/1) ... [2019-11-07 00:51:54,277 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:51:54" (1/1) ... [2019-11-07 00:51:54,311 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 00:51:54,315 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 00:51:54,315 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 00:51:54,316 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 00:51:54,319 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:51:54" (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 00:51:54,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 00:51:54,404 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 00:51:54,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-11-07 00:51:54,405 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-11-07 00:51:54,405 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__SignForward_spec__1 [2019-11-07 00:51:54,406 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-11-07 00:51:54,406 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-11-07 00:51:54,406 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-11-07 00:51:54,407 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-11-07 00:51:54,407 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-11-07 00:51:54,408 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-11-07 00:51:54,408 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-11-07 00:51:54,408 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-11-07 00:51:54,409 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-11-07 00:51:54,409 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-11-07 00:51:54,410 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob__wrappee__Base [2019-11-07 00:51:54,412 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_bob [2019-11-07 00:51:54,413 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh__wrappee__Base [2019-11-07 00:51:54,414 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_rjh [2019-11-07 00:51:54,414 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck__wrappee__Base [2019-11-07 00:51:54,414 INFO L138 BoogieDeclarations]: Found implementation of procedure setup_chuck [2019-11-07 00:51:54,415 INFO L138 BoogieDeclarations]: Found implementation of procedure bobToRjh [2019-11-07 00:51:54,415 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhToBob [2019-11-07 00:51:54,415 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-11-07 00:51:54,415 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 00:51:54,415 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAdd [2019-11-07 00:51:54,416 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAdd [2019-11-07 00:51:54,416 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyAddChuck [2019-11-07 00:51:54,416 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyAddChuck [2019-11-07 00:51:54,416 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAdd [2019-11-07 00:51:54,416 INFO L138 BoogieDeclarations]: Found implementation of procedure chuckKeyAddRjh [2019-11-07 00:51:54,417 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhDeletePrivateKey [2019-11-07 00:51:54,417 INFO L138 BoogieDeclarations]: Found implementation of procedure bobKeyChange [2019-11-07 00:51:54,417 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhKeyChange [2019-11-07 00:51:54,417 INFO L138 BoogieDeclarations]: Found implementation of procedure rjhEnableForwarding [2019-11-07 00:51:54,417 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-11-07 00:51:54,417 INFO L138 BoogieDeclarations]: Found implementation of procedure mail [2019-11-07 00:51:54,418 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing__wrappee__Keys [2019-11-07 00:51:54,418 INFO L138 BoogieDeclarations]: Found implementation of procedure outgoing [2019-11-07 00:51:54,418 INFO L138 BoogieDeclarations]: Found implementation of procedure deliver [2019-11-07 00:51:54,418 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Sign [2019-11-07 00:51:54,418 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming__wrappee__Forward [2019-11-07 00:51:54,418 INFO L138 BoogieDeclarations]: Found implementation of procedure incoming [2019-11-07 00:51:54,419 INFO L138 BoogieDeclarations]: Found implementation of procedure createClient [2019-11-07 00:51:54,419 INFO L138 BoogieDeclarations]: Found implementation of procedure sendEmail [2019-11-07 00:51:54,419 INFO L138 BoogieDeclarations]: Found implementation of procedure queue [2019-11-07 00:51:54,419 INFO L138 BoogieDeclarations]: Found implementation of procedure is_queue_empty [2019-11-07 00:51:54,419 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_client [2019-11-07 00:51:54,420 INFO L138 BoogieDeclarations]: Found implementation of procedure get_queued_email [2019-11-07 00:51:54,420 INFO L138 BoogieDeclarations]: Found implementation of procedure isKeyPairValid [2019-11-07 00:51:54,420 INFO L138 BoogieDeclarations]: Found implementation of procedure generateKeyPair [2019-11-07 00:51:54,420 INFO L138 BoogieDeclarations]: Found implementation of procedure sign [2019-11-07 00:51:54,420 INFO L138 BoogieDeclarations]: Found implementation of procedure forward [2019-11-07 00:51:54,420 INFO L138 BoogieDeclarations]: Found implementation of procedure verify [2019-11-07 00:51:54,421 INFO L138 BoogieDeclarations]: Found implementation of procedure prompt [2019-11-07 00:51:54,421 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Keys [2019-11-07 00:51:54,421 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail__wrappee__Forward [2019-11-07 00:51:54,421 INFO L138 BoogieDeclarations]: Found implementation of procedure printMail [2019-11-07 00:51:54,421 INFO L138 BoogieDeclarations]: Found implementation of procedure isReadable [2019-11-07 00:51:54,422 INFO L138 BoogieDeclarations]: Found implementation of procedure cloneEmail [2019-11-07 00:51:54,422 INFO L138 BoogieDeclarations]: Found implementation of procedure createEmail [2019-11-07 00:51:54,422 INFO L138 BoogieDeclarations]: Found implementation of procedure initClient [2019-11-07 00:51:54,423 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientName [2019-11-07 00:51:54,423 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientName [2019-11-07 00:51:54,424 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientOutbuffer [2019-11-07 00:51:54,424 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientOutbuffer [2019-11-07 00:51:54,424 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookSize [2019-11-07 00:51:54,424 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookSize [2019-11-07 00:51:54,424 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientAddressBookEntry [2019-11-07 00:51:54,425 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAlias [2019-11-07 00:51:54,425 INFO L138 BoogieDeclarations]: Found implementation of procedure findClientAddressBookAlias [2019-11-07 00:51:54,425 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAlias [2019-11-07 00:51:54,425 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAddressBookAddress [2019-11-07 00:51:54,426 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAddressBookAddress [2019-11-07 00:51:54,427 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientAutoResponse [2019-11-07 00:51:54,427 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientAutoResponse [2019-11-07 00:51:54,427 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientPrivateKey [2019-11-07 00:51:54,427 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientPrivateKey [2019-11-07 00:51:54,427 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringSize [2019-11-07 00:51:54,428 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringSize [2019-11-07 00:51:54,428 INFO L138 BoogieDeclarations]: Found implementation of procedure createClientKeyringEntry [2019-11-07 00:51:54,429 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringUser [2019-11-07 00:51:54,429 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringUser [2019-11-07 00:51:54,429 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientKeyringPublicKey [2019-11-07 00:51:54,429 INFO L138 BoogieDeclarations]: Found implementation of procedure findPublicKey [2019-11-07 00:51:54,430 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientKeyringPublicKey [2019-11-07 00:51:54,431 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientForwardReceiver [2019-11-07 00:51:54,432 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientForwardReceiver [2019-11-07 00:51:54,432 INFO L138 BoogieDeclarations]: Found implementation of procedure getClientId [2019-11-07 00:51:54,432 INFO L138 BoogieDeclarations]: Found implementation of procedure setClientId [2019-11-07 00:51:54,432 INFO L138 BoogieDeclarations]: Found implementation of procedure initEmail [2019-11-07 00:51:54,433 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailId [2019-11-07 00:51:54,433 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailId [2019-11-07 00:51:54,433 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailFrom [2019-11-07 00:51:54,433 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailFrom [2019-11-07 00:51:54,433 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailTo [2019-11-07 00:51:54,433 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailTo [2019-11-07 00:51:54,434 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSubject [2019-11-07 00:51:54,434 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSubject [2019-11-07 00:51:54,434 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailBody [2019-11-07 00:51:54,434 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailBody [2019-11-07 00:51:54,434 INFO L138 BoogieDeclarations]: Found implementation of procedure isEncrypted [2019-11-07 00:51:54,434 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsEncrypted [2019-11-07 00:51:54,435 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailEncryptionKey [2019-11-07 00:51:54,435 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailEncryptionKey [2019-11-07 00:51:54,435 INFO L138 BoogieDeclarations]: Found implementation of procedure isSigned [2019-11-07 00:51:54,435 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSigned [2019-11-07 00:51:54,435 INFO L138 BoogieDeclarations]: Found implementation of procedure getEmailSignKey [2019-11-07 00:51:54,436 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailSignKey [2019-11-07 00:51:54,436 INFO L138 BoogieDeclarations]: Found implementation of procedure isVerified [2019-11-07 00:51:54,436 INFO L138 BoogieDeclarations]: Found implementation of procedure setEmailIsSignatureVerified [2019-11-07 00:51:54,436 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 00:51:54,436 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 00:51:54,437 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-11-07 00:51:54,437 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-11-07 00:51:54,437 INFO L130 BoogieDeclarations]: Found specification of procedure isSigned [2019-11-07 00:51:54,437 INFO L130 BoogieDeclarations]: Found specification of procedure getClientPrivateKey [2019-11-07 00:51:54,438 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__SignForward_spec__1 [2019-11-07 00:51:54,438 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-07 00:51:54,438 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-11-07 00:51:54,439 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-11-07 00:51:54,439 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-11-07 00:51:54,439 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-11-07 00:51:54,439 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-11-07 00:51:54,440 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-07 00:51:54,440 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-07 00:51:54,440 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-11-07 00:51:54,441 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-07 00:51:54,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-07 00:51:54,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-07 00:51:54,441 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-07 00:51:54,442 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-11-07 00:51:54,442 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-07 00:51:54,442 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-11-07 00:51:54,442 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-11-07 00:51:54,443 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-07 00:51:54,444 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-11-07 00:51:54,450 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-11-07 00:51:54,450 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-11-07 00:51:54,450 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-11-07 00:51:54,451 INFO L130 BoogieDeclarations]: Found specification of procedure setClientPrivateKey [2019-11-07 00:51:54,451 INFO L130 BoogieDeclarations]: Found specification of procedure createClientKeyringEntry [2019-11-07 00:51:54,451 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringUser [2019-11-07 00:51:54,452 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringUser [2019-11-07 00:51:54,457 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringPublicKey [2019-11-07 00:51:54,457 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringPublicKey [2019-11-07 00:51:54,458 INFO L130 BoogieDeclarations]: Found specification of procedure setClientForwardReceiver [2019-11-07 00:51:54,458 INFO L130 BoogieDeclarations]: Found specification of procedure setClientId [2019-11-07 00:51:54,458 INFO L130 BoogieDeclarations]: Found specification of procedure is_queue_empty [2019-11-07 00:51:54,458 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_client [2019-11-07 00:51:54,458 INFO L130 BoogieDeclarations]: Found specification of procedure get_queued_email [2019-11-07 00:51:54,458 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing [2019-11-07 00:51:54,458 INFO L130 BoogieDeclarations]: Found specification of procedure sendEmail [2019-11-07 00:51:54,458 INFO L130 BoogieDeclarations]: Found specification of procedure generateKeyPair [2019-11-07 00:51:54,459 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob [2019-11-07 00:51:54,459 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh [2019-11-07 00:51:54,459 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck [2019-11-07 00:51:54,459 INFO L130 BoogieDeclarations]: Found specification of procedure bobToRjh [2019-11-07 00:51:54,459 INFO L130 BoogieDeclarations]: Found specification of procedure rjhToBob [2019-11-07 00:51:54,459 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-11-07 00:51:54,459 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-11-07 00:51:54,460 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 00:51:54,461 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAdd [2019-11-07 00:51:54,461 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyAddChuck [2019-11-07 00:51:54,461 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAdd [2019-11-07 00:51:54,461 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyAddChuck [2019-11-07 00:51:54,462 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAdd [2019-11-07 00:51:54,462 INFO L130 BoogieDeclarations]: Found specification of procedure bobKeyChange [2019-11-07 00:51:54,462 INFO L130 BoogieDeclarations]: Found specification of procedure rjhKeyChange [2019-11-07 00:51:54,462 INFO L130 BoogieDeclarations]: Found specification of procedure rjhDeletePrivateKey [2019-11-07 00:51:54,462 INFO L130 BoogieDeclarations]: Found specification of procedure chuckKeyAddRjh [2019-11-07 00:51:54,462 INFO L130 BoogieDeclarations]: Found specification of procedure rjhEnableForwarding [2019-11-07 00:51:54,462 INFO L130 BoogieDeclarations]: Found specification of procedure setup_bob__wrappee__Base [2019-11-07 00:51:54,462 INFO L130 BoogieDeclarations]: Found specification of procedure setup_rjh__wrappee__Base [2019-11-07 00:51:54,463 INFO L130 BoogieDeclarations]: Found specification of procedure setup_chuck__wrappee__Base [2019-11-07 00:51:54,463 INFO L130 BoogieDeclarations]: Found specification of procedure initClient [2019-11-07 00:51:54,463 INFO L130 BoogieDeclarations]: Found specification of procedure getClientForwardReceiver [2019-11-07 00:51:54,463 INFO L130 BoogieDeclarations]: Found specification of procedure getClientId [2019-11-07 00:51:54,463 INFO L130 BoogieDeclarations]: Found specification of procedure findPublicKey [2019-11-07 00:51:54,463 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailFrom [2019-11-07 00:51:54,463 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailFrom [2019-11-07 00:51:54,463 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailTo [2019-11-07 00:51:54,464 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailTo [2019-11-07 00:51:54,464 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSigned [2019-11-07 00:51:54,464 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSignKey [2019-11-07 00:51:54,464 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSignKey [2019-11-07 00:51:54,464 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsSignatureVerified [2019-11-07 00:51:54,464 INFO L130 BoogieDeclarations]: Found specification of procedure printMail [2019-11-07 00:51:54,464 INFO L130 BoogieDeclarations]: Found specification of procedure isReadable [2019-11-07 00:51:54,465 INFO L130 BoogieDeclarations]: Found specification of procedure createEmail [2019-11-07 00:51:54,465 INFO L130 BoogieDeclarations]: Found specification of procedure queue [2019-11-07 00:51:54,465 INFO L130 BoogieDeclarations]: Found specification of procedure mail [2019-11-07 00:51:54,465 INFO L130 BoogieDeclarations]: Found specification of procedure deliver [2019-11-07 00:51:54,465 INFO L130 BoogieDeclarations]: Found specification of procedure incoming [2019-11-07 00:51:54,465 INFO L130 BoogieDeclarations]: Found specification of procedure createClient [2019-11-07 00:51:54,465 INFO L130 BoogieDeclarations]: Found specification of procedure isKeyPairValid [2019-11-07 00:51:54,465 INFO L130 BoogieDeclarations]: Found specification of procedure sign [2019-11-07 00:51:54,466 INFO L130 BoogieDeclarations]: Found specification of procedure forward [2019-11-07 00:51:54,466 INFO L130 BoogieDeclarations]: Found specification of procedure verify [2019-11-07 00:51:54,466 INFO L130 BoogieDeclarations]: Found specification of procedure outgoing__wrappee__Keys [2019-11-07 00:51:54,466 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Sign [2019-11-07 00:51:54,466 INFO L130 BoogieDeclarations]: Found specification of procedure incoming__wrappee__Forward [2019-11-07 00:51:54,466 INFO L130 BoogieDeclarations]: Found specification of procedure prompt [2019-11-07 00:51:54,466 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailId [2019-11-07 00:51:54,466 INFO L130 BoogieDeclarations]: Found specification of procedure isVerified [2019-11-07 00:51:54,467 INFO L130 BoogieDeclarations]: Found specification of procedure cloneEmail [2019-11-07 00:51:54,467 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Keys [2019-11-07 00:51:54,467 INFO L130 BoogieDeclarations]: Found specification of procedure printMail__wrappee__Forward [2019-11-07 00:51:54,467 INFO L130 BoogieDeclarations]: Found specification of procedure getClientName [2019-11-07 00:51:54,467 INFO L130 BoogieDeclarations]: Found specification of procedure setClientName [2019-11-07 00:51:54,467 INFO L130 BoogieDeclarations]: Found specification of procedure getClientOutbuffer [2019-11-07 00:51:54,467 INFO L130 BoogieDeclarations]: Found specification of procedure setClientOutbuffer [2019-11-07 00:51:54,467 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookSize [2019-11-07 00:51:54,468 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookSize [2019-11-07 00:51:54,468 INFO L130 BoogieDeclarations]: Found specification of procedure createClientAddressBookEntry [2019-11-07 00:51:54,468 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAlias [2019-11-07 00:51:54,468 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAlias [2019-11-07 00:51:54,468 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAddressBookAddress [2019-11-07 00:51:54,468 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAddressBookAddress [2019-11-07 00:51:54,468 INFO L130 BoogieDeclarations]: Found specification of procedure getClientAutoResponse [2019-11-07 00:51:54,469 INFO L130 BoogieDeclarations]: Found specification of procedure setClientAutoResponse [2019-11-07 00:51:54,469 INFO L130 BoogieDeclarations]: Found specification of procedure getClientKeyringSize [2019-11-07 00:51:54,469 INFO L130 BoogieDeclarations]: Found specification of procedure findClientAddressBookAlias [2019-11-07 00:51:54,469 INFO L130 BoogieDeclarations]: Found specification of procedure setClientKeyringSize [2019-11-07 00:51:54,469 INFO L130 BoogieDeclarations]: Found specification of procedure initEmail [2019-11-07 00:51:54,469 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailId [2019-11-07 00:51:54,469 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailSubject [2019-11-07 00:51:54,469 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailSubject [2019-11-07 00:51:54,470 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailBody [2019-11-07 00:51:54,470 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailBody [2019-11-07 00:51:54,470 INFO L130 BoogieDeclarations]: Found specification of procedure isEncrypted [2019-11-07 00:51:54,470 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailIsEncrypted [2019-11-07 00:51:54,470 INFO L130 BoogieDeclarations]: Found specification of procedure getEmailEncryptionKey [2019-11-07 00:51:54,470 INFO L130 BoogieDeclarations]: Found specification of procedure setEmailEncryptionKey [2019-11-07 00:51:54,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 00:51:54,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-07 00:51:54,471 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 00:51:56,784 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 00:51:56,785 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-07 00:51:56,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:51:56 BoogieIcfgContainer [2019-11-07 00:51:56,787 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 00:51:56,788 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 00:51:56,788 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 00:51:56,792 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 00:51:56,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:51:53" (1/3) ... [2019-11-07 00:51:56,793 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1145d1e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:51:56, skipping insertion in model container [2019-11-07 00:51:56,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:51:54" (2/3) ... [2019-11-07 00:51:56,794 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1145d1e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:51:56, skipping insertion in model container [2019-11-07 00:51:56,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:51:56" (3/3) ... [2019-11-07 00:51:56,796 INFO L109 eAbstractionObserver]: Analyzing ICFG email_spec4_product19.cil.c [2019-11-07 00:51:56,807 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 00:51:56,816 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 00:51:56,828 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 00:51:56,859 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 00:51:56,859 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 00:51:56,859 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 00:51:56,859 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 00:51:56,859 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 00:51:56,860 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 00:51:56,860 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 00:51:56,860 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 00:51:56,891 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states. [2019-11-07 00:51:56,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2019-11-07 00:51:56,910 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:51:56,911 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:51:56,913 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:51:56,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:51:56,920 INFO L82 PathProgramCache]: Analyzing trace with hash -1092646589, now seen corresponding path program 1 times [2019-11-07 00:51:56,930 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:51:56,931 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085560116] [2019-11-07 00:51:56,931 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:51:57,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:51:57,502 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-11-07 00:51:57,502 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085560116] [2019-11-07 00:51:57,504 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:51:57,504 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 00:51:57,505 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [937359570] [2019-11-07 00:51:57,512 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 00:51:57,513 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:51:57,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 00:51:57,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 00:51:57,531 INFO L87 Difference]: Start difference. First operand 494 states. Second operand 2 states. [2019-11-07 00:51:57,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:51:57,647 INFO L93 Difference]: Finished difference Result 730 states and 953 transitions. [2019-11-07 00:51:57,647 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 00:51:57,652 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 148 [2019-11-07 00:51:57,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:51:57,687 INFO L225 Difference]: With dead ends: 730 [2019-11-07 00:51:57,688 INFO L226 Difference]: Without dead ends: 471 [2019-11-07 00:51:57,699 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 00:51:57,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2019-11-07 00:51:57,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 471. [2019-11-07 00:51:57,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 471 states. [2019-11-07 00:51:57,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 471 states to 471 states and 621 transitions. [2019-11-07 00:51:57,795 INFO L78 Accepts]: Start accepts. Automaton has 471 states and 621 transitions. Word has length 148 [2019-11-07 00:51:57,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:51:57,797 INFO L462 AbstractCegarLoop]: Abstraction has 471 states and 621 transitions. [2019-11-07 00:51:57,797 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 00:51:57,797 INFO L276 IsEmpty]: Start isEmpty. Operand 471 states and 621 transitions. [2019-11-07 00:51:57,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2019-11-07 00:51:57,803 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:51:57,803 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:51:57,804 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:51:57,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:51:57,804 INFO L82 PathProgramCache]: Analyzing trace with hash -810141649, now seen corresponding path program 1 times [2019-11-07 00:51:57,804 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:51:57,805 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189993831] [2019-11-07 00:51:57,805 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:51:57,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:51:58,019 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-11-07 00:51:58,019 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189993831] [2019-11-07 00:51:58,020 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:51:58,020 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:51:58,020 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388428463] [2019-11-07 00:51:58,034 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:51:58,035 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:51:58,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:51:58,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:51:58,039 INFO L87 Difference]: Start difference. First operand 471 states and 621 transitions. Second operand 3 states. [2019-11-07 00:51:58,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:51:58,105 INFO L93 Difference]: Finished difference Result 713 states and 922 transitions. [2019-11-07 00:51:58,106 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:51:58,106 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 149 [2019-11-07 00:51:58,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:51:58,112 INFO L225 Difference]: With dead ends: 713 [2019-11-07 00:51:58,112 INFO L226 Difference]: Without dead ends: 474 [2019-11-07 00:51:58,115 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 00:51:58,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 474 states. [2019-11-07 00:51:58,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 474 to 473. [2019-11-07 00:51:58,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 473 states. [2019-11-07 00:51:58,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 473 states to 473 states and 623 transitions. [2019-11-07 00:51:58,165 INFO L78 Accepts]: Start accepts. Automaton has 473 states and 623 transitions. Word has length 149 [2019-11-07 00:51:58,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:51:58,166 INFO L462 AbstractCegarLoop]: Abstraction has 473 states and 623 transitions. [2019-11-07 00:51:58,166 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:51:58,166 INFO L276 IsEmpty]: Start isEmpty. Operand 473 states and 623 transitions. [2019-11-07 00:51:58,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2019-11-07 00:51:58,171 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:51:58,174 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:51:58,175 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:51:58,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:51:58,175 INFO L82 PathProgramCache]: Analyzing trace with hash 1944980387, now seen corresponding path program 1 times [2019-11-07 00:51:58,175 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:51:58,177 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1320137393] [2019-11-07 00:51:58,177 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:51:58,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:51:58,463 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-11-07 00:51:58,463 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1320137393] [2019-11-07 00:51:58,463 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:51:58,464 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-07 00:51:58,464 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595565411] [2019-11-07 00:51:58,464 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-07 00:51:58,465 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:51:58,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-07 00:51:58,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-07 00:51:58,465 INFO L87 Difference]: Start difference. First operand 473 states and 623 transitions. Second operand 3 states. [2019-11-07 00:51:58,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:51:58,514 INFO L93 Difference]: Finished difference Result 922 states and 1244 transitions. [2019-11-07 00:51:58,515 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-07 00:51:58,515 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 155 [2019-11-07 00:51:58,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:51:58,524 INFO L225 Difference]: With dead ends: 922 [2019-11-07 00:51:58,524 INFO L226 Difference]: Without dead ends: 514 [2019-11-07 00:51:58,526 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 00:51:58,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2019-11-07 00:51:58,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 513. [2019-11-07 00:51:58,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 513 states. [2019-11-07 00:51:58,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 692 transitions. [2019-11-07 00:51:58,566 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 692 transitions. Word has length 155 [2019-11-07 00:51:58,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:51:58,568 INFO L462 AbstractCegarLoop]: Abstraction has 513 states and 692 transitions. [2019-11-07 00:51:58,568 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-07 00:51:58,568 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 692 transitions. [2019-11-07 00:51:58,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2019-11-07 00:51:58,577 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:51:58,578 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:51:58,578 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:51:58,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:51:58,578 INFO L82 PathProgramCache]: Analyzing trace with hash 1177925529, now seen corresponding path program 1 times [2019-11-07 00:51:58,579 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:51:58,579 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734367635] [2019-11-07 00:51:58,579 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:51:58,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:51:58,902 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-11-07 00:51:58,902 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734367635] [2019-11-07 00:51:58,902 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:51:58,903 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-07 00:51:58,903 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807310770] [2019-11-07 00:51:58,904 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:51:58,904 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:51:58,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:51:58,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-07 00:51:58,905 INFO L87 Difference]: Start difference. First operand 513 states and 692 transitions. Second operand 7 states. [2019-11-07 00:52:01,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:52:01,906 INFO L93 Difference]: Finished difference Result 983 states and 1285 transitions. [2019-11-07 00:52:01,907 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-07 00:52:01,907 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 156 [2019-11-07 00:52:01,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:52:01,914 INFO L225 Difference]: With dead ends: 983 [2019-11-07 00:52:01,914 INFO L226 Difference]: Without dead ends: 755 [2019-11-07 00:52:01,917 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-11-07 00:52:01,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 755 states. [2019-11-07 00:52:01,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 755 to 746. [2019-11-07 00:52:01,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 746 states. [2019-11-07 00:52:01,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 746 states to 746 states and 987 transitions. [2019-11-07 00:52:01,959 INFO L78 Accepts]: Start accepts. Automaton has 746 states and 987 transitions. Word has length 156 [2019-11-07 00:52:01,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:52:01,960 INFO L462 AbstractCegarLoop]: Abstraction has 746 states and 987 transitions. [2019-11-07 00:52:01,960 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 00:52:01,960 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states and 987 transitions. [2019-11-07 00:52:01,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2019-11-07 00:52:01,964 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:52:01,964 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:52:01,964 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:52:01,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:52:01,965 INFO L82 PathProgramCache]: Analyzing trace with hash -1743072704, now seen corresponding path program 1 times [2019-11-07 00:52:01,965 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:52:01,965 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874976119] [2019-11-07 00:52:01,965 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:52:02,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:02,318 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-11-07 00:52:02,318 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1874976119] [2019-11-07 00:52:02,318 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:52:02,319 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2019-11-07 00:52:02,319 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623075832] [2019-11-07 00:52:02,320 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-07 00:52:02,320 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:52:02,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-07 00:52:02,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=211, Unknown=0, NotChecked=0, Total=240 [2019-11-07 00:52:02,321 INFO L87 Difference]: Start difference. First operand 746 states and 987 transitions. Second operand 16 states. [2019-11-07 00:52:02,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:52:02,660 INFO L93 Difference]: Finished difference Result 1263 states and 1648 transitions. [2019-11-07 00:52:02,660 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-11-07 00:52:02,660 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 157 [2019-11-07 00:52:02,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:52:02,666 INFO L225 Difference]: With dead ends: 1263 [2019-11-07 00:52:02,666 INFO L226 Difference]: Without dead ends: 778 [2019-11-07 00:52:02,669 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=409, Unknown=0, NotChecked=0, Total=462 [2019-11-07 00:52:02,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 778 states. [2019-11-07 00:52:02,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 778 to 774. [2019-11-07 00:52:02,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 774 states. [2019-11-07 00:52:02,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 774 states to 774 states and 1024 transitions. [2019-11-07 00:52:02,719 INFO L78 Accepts]: Start accepts. Automaton has 774 states and 1024 transitions. Word has length 157 [2019-11-07 00:52:02,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:52:02,721 INFO L462 AbstractCegarLoop]: Abstraction has 774 states and 1024 transitions. [2019-11-07 00:52:02,721 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-07 00:52:02,721 INFO L276 IsEmpty]: Start isEmpty. Operand 774 states and 1024 transitions. [2019-11-07 00:52:02,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2019-11-07 00:52:02,725 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:52:02,725 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:52:02,726 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:52:02,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:52:02,726 INFO L82 PathProgramCache]: Analyzing trace with hash 1940029047, now seen corresponding path program 1 times [2019-11-07 00:52:02,726 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:52:02,727 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039781486] [2019-11-07 00:52:02,727 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:52:02,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:02,965 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-11-07 00:52:02,966 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039781486] [2019-11-07 00:52:02,966 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:52:02,966 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-07 00:52:02,966 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732456412] [2019-11-07 00:52:02,967 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-07 00:52:02,967 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:52:02,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-07 00:52:02,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-11-07 00:52:02,968 INFO L87 Difference]: Start difference. First operand 774 states and 1024 transitions. Second operand 8 states. [2019-11-07 00:52:03,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:52:03,887 INFO L93 Difference]: Finished difference Result 1383 states and 1801 transitions. [2019-11-07 00:52:03,887 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-07 00:52:03,888 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 166 [2019-11-07 00:52:03,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:52:03,899 INFO L225 Difference]: With dead ends: 1383 [2019-11-07 00:52:03,899 INFO L226 Difference]: Without dead ends: 1296 [2019-11-07 00:52:03,901 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2019-11-07 00:52:03,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1296 states. [2019-11-07 00:52:03,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1296 to 1283. [2019-11-07 00:52:03,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1283 states. [2019-11-07 00:52:03,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1283 states to 1283 states and 1679 transitions. [2019-11-07 00:52:03,987 INFO L78 Accepts]: Start accepts. Automaton has 1283 states and 1679 transitions. Word has length 166 [2019-11-07 00:52:03,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:52:03,991 INFO L462 AbstractCegarLoop]: Abstraction has 1283 states and 1679 transitions. [2019-11-07 00:52:03,992 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-07 00:52:03,992 INFO L276 IsEmpty]: Start isEmpty. Operand 1283 states and 1679 transitions. [2019-11-07 00:52:03,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2019-11-07 00:52:03,995 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:52:03,996 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:52:03,996 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:52:03,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:52:03,997 INFO L82 PathProgramCache]: Analyzing trace with hash -511327191, now seen corresponding path program 1 times [2019-11-07 00:52:03,997 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:52:03,997 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778637455] [2019-11-07 00:52:03,997 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:52:04,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:04,254 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-11-07 00:52:04,255 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778637455] [2019-11-07 00:52:04,255 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:52:04,255 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2019-11-07 00:52:04,256 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090235904] [2019-11-07 00:52:04,256 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-11-07 00:52:04,256 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:52:04,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-11-07 00:52:04,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2019-11-07 00:52:04,257 INFO L87 Difference]: Start difference. First operand 1283 states and 1679 transitions. Second operand 15 states. [2019-11-07 00:52:04,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:52:04,797 INFO L93 Difference]: Finished difference Result 1762 states and 2282 transitions. [2019-11-07 00:52:04,798 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-07 00:52:04,798 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 167 [2019-11-07 00:52:04,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:52:04,806 INFO L225 Difference]: With dead ends: 1762 [2019-11-07 00:52:04,806 INFO L226 Difference]: Without dead ends: 1282 [2019-11-07 00:52:04,848 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=615, Unknown=0, NotChecked=0, Total=702 [2019-11-07 00:52:04,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1282 states. [2019-11-07 00:52:04,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1282 to 1281. [2019-11-07 00:52:04,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1281 states. [2019-11-07 00:52:04,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1281 states to 1281 states and 1674 transitions. [2019-11-07 00:52:04,913 INFO L78 Accepts]: Start accepts. Automaton has 1281 states and 1674 transitions. Word has length 167 [2019-11-07 00:52:04,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:52:04,913 INFO L462 AbstractCegarLoop]: Abstraction has 1281 states and 1674 transitions. [2019-11-07 00:52:04,914 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-11-07 00:52:04,914 INFO L276 IsEmpty]: Start isEmpty. Operand 1281 states and 1674 transitions. [2019-11-07 00:52:04,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2019-11-07 00:52:04,917 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:52:04,917 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:52:04,918 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:52:04,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:52:04,918 INFO L82 PathProgramCache]: Analyzing trace with hash 211331651, now seen corresponding path program 2 times [2019-11-07 00:52:04,918 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:52:04,919 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831809050] [2019-11-07 00:52:04,919 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:52:04,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:05,100 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-11-07 00:52:05,101 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831809050] [2019-11-07 00:52:05,101 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [700699866] [2019-11-07 00:52:05,101 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:52:05,681 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2019-11-07 00:52:05,681 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-07 00:52:05,688 INFO L256 TraceCheckSpWp]: Trace formula consists of 1924 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-07 00:52:05,705 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:52:05,951 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-11-07 00:52:05,952 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:52:06,513 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2019-11-07 00:52:06,514 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:52:06,514 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [11] total 23 [2019-11-07 00:52:06,515 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445390026] [2019-11-07 00:52:06,516 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-07 00:52:06,516 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:52:06,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-07 00:52:06,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2019-11-07 00:52:06,517 INFO L87 Difference]: Start difference. First operand 1281 states and 1674 transitions. Second operand 14 states. [2019-11-07 00:52:08,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:52:08,708 INFO L93 Difference]: Finished difference Result 3795 states and 4997 transitions. [2019-11-07 00:52:08,710 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-11-07 00:52:08,710 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 167 [2019-11-07 00:52:08,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:52:08,754 INFO L225 Difference]: With dead ends: 3795 [2019-11-07 00:52:08,755 INFO L226 Difference]: Without dead ends: 3788 [2019-11-07 00:52:08,759 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 366 GetRequests, 328 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=178, Invalid=1228, Unknown=0, NotChecked=0, Total=1406 [2019-11-07 00:52:08,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3788 states. [2019-11-07 00:52:09,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3788 to 2767. [2019-11-07 00:52:09,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2767 states. [2019-11-07 00:52:09,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2767 states to 2767 states and 3696 transitions. [2019-11-07 00:52:09,021 INFO L78 Accepts]: Start accepts. Automaton has 2767 states and 3696 transitions. Word has length 167 [2019-11-07 00:52:09,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:52:09,022 INFO L462 AbstractCegarLoop]: Abstraction has 2767 states and 3696 transitions. [2019-11-07 00:52:09,022 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-07 00:52:09,023 INFO L276 IsEmpty]: Start isEmpty. Operand 2767 states and 3696 transitions. [2019-11-07 00:52:09,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2019-11-07 00:52:09,034 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:52:09,034 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:52:09,245 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:52:09,246 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:52:09,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:52:09,246 INFO L82 PathProgramCache]: Analyzing trace with hash 1415451547, now seen corresponding path program 1 times [2019-11-07 00:52:09,247 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:52:09,248 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525379473] [2019-11-07 00:52:09,248 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:52:09,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:09,481 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-11-07 00:52:09,481 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525379473] [2019-11-07 00:52:09,482 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [308923362] [2019-11-07 00:52:09,482 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 00:52:10,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:10,288 INFO L256 TraceCheckSpWp]: Trace formula consists of 2433 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-07 00:52:10,302 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:52:10,412 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-11-07 00:52:10,413 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:52:10,697 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:52:10,751 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:52:10,791 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-11-07 00:52:10,792 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 00:52:10,792 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 16 [2019-11-07 00:52:10,792 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643546330] [2019-11-07 00:52:10,793 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-07 00:52:10,794 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:52:10,794 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-07 00:52:10,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2019-11-07 00:52:10,795 INFO L87 Difference]: Start difference. First operand 2767 states and 3696 transitions. Second operand 7 states. [2019-11-07 00:52:12,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:52:12,329 INFO L93 Difference]: Finished difference Result 5507 states and 7363 transitions. [2019-11-07 00:52:12,329 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 00:52:12,329 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 170 [2019-11-07 00:52:12,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:52:12,350 INFO L225 Difference]: With dead ends: 5507 [2019-11-07 00:52:12,350 INFO L226 Difference]: Without dead ends: 2779 [2019-11-07 00:52:12,360 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 329 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2019-11-07 00:52:12,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2779 states. [2019-11-07 00:52:12,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2779 to 2769. [2019-11-07 00:52:12,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2769 states. [2019-11-07 00:52:12,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2769 states to 2769 states and 3699 transitions. [2019-11-07 00:52:12,551 INFO L78 Accepts]: Start accepts. Automaton has 2769 states and 3699 transitions. Word has length 170 [2019-11-07 00:52:12,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:52:12,552 INFO L462 AbstractCegarLoop]: Abstraction has 2769 states and 3699 transitions. [2019-11-07 00:52:12,553 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-07 00:52:12,553 INFO L276 IsEmpty]: Start isEmpty. Operand 2769 states and 3699 transitions. [2019-11-07 00:52:12,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2019-11-07 00:52:12,561 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:52:12,562 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:52:12,769 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:52:12,769 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:52:12,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:52:12,770 INFO L82 PathProgramCache]: Analyzing trace with hash -1281596506, now seen corresponding path program 1 times [2019-11-07 00:52:12,770 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:52:12,771 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835779397] [2019-11-07 00:52:12,771 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:52:12,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:13,012 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-11-07 00:52:13,016 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835779397] [2019-11-07 00:52:13,017 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [512639630] [2019-11-07 00:52:13,017 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 00:52:13,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:13,610 INFO L256 TraceCheckSpWp]: Trace formula consists of 2431 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-07 00:52:13,621 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:52:13,758 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-11-07 00:52:13,758 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:52:14,064 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:52:14,148 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:52:14,215 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:52:14,306 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-11-07 00:52:14,306 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-07 00:52:14,307 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7, 9] total 20 [2019-11-07 00:52:14,307 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401245495] [2019-11-07 00:52:14,307 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-07 00:52:14,308 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:52:14,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-07 00:52:14,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2019-11-07 00:52:14,308 INFO L87 Difference]: Start difference. First operand 2769 states and 3699 transitions. Second operand 9 states. [2019-11-07 00:52:16,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:52:16,126 INFO L93 Difference]: Finished difference Result 5514 states and 7373 transitions. [2019-11-07 00:52:16,127 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-07 00:52:16,127 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 171 [2019-11-07 00:52:16,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:52:16,145 INFO L225 Difference]: With dead ends: 5514 [2019-11-07 00:52:16,145 INFO L226 Difference]: Without dead ends: 2787 [2019-11-07 00:52:16,155 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 326 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2019-11-07 00:52:16,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2787 states. [2019-11-07 00:52:16,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2787 to 2785. [2019-11-07 00:52:16,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2785 states. [2019-11-07 00:52:16,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2785 states to 2785 states and 3715 transitions. [2019-11-07 00:52:16,306 INFO L78 Accepts]: Start accepts. Automaton has 2785 states and 3715 transitions. Word has length 171 [2019-11-07 00:52:16,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:52:16,307 INFO L462 AbstractCegarLoop]: Abstraction has 2785 states and 3715 transitions. [2019-11-07 00:52:16,307 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-07 00:52:16,307 INFO L276 IsEmpty]: Start isEmpty. Operand 2785 states and 3715 transitions. [2019-11-07 00:52:16,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2019-11-07 00:52:16,314 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:52:16,315 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:52:16,530 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:52:16,530 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:52:16,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:52:16,530 INFO L82 PathProgramCache]: Analyzing trace with hash -239640913, now seen corresponding path program 1 times [2019-11-07 00:52:16,531 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:52:16,532 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934479047] [2019-11-07 00:52:16,532 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:52:16,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:16,656 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2019-11-07 00:52:16,656 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934479047] [2019-11-07 00:52:16,657 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [716172831] [2019-11-07 00:52:16,657 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:52:17,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:17,199 INFO L256 TraceCheckSpWp]: Trace formula consists of 2432 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-07 00:52:17,205 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:52:17,356 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-11-07 00:52:17,356 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:52:17,759 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:52:17,836 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:52:17,896 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:52:18,013 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2019-11-07 00:52:18,014 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:52:18,014 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [7] total 21 [2019-11-07 00:52:18,014 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303850551] [2019-11-07 00:52:18,018 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-07 00:52:18,018 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:52:18,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-07 00:52:18,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=356, Unknown=0, NotChecked=0, Total=420 [2019-11-07 00:52:18,019 INFO L87 Difference]: Start difference. First operand 2785 states and 3715 transitions. Second operand 16 states. [2019-11-07 00:52:19,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:52:19,417 INFO L93 Difference]: Finished difference Result 5506 states and 7354 transitions. [2019-11-07 00:52:19,417 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-11-07 00:52:19,417 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 172 [2019-11-07 00:52:19,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:52:19,433 INFO L225 Difference]: With dead ends: 5506 [2019-11-07 00:52:19,433 INFO L226 Difference]: Without dead ends: 2809 [2019-11-07 00:52:19,442 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 328 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=504, Unknown=0, NotChecked=0, Total=600 [2019-11-07 00:52:19,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2809 states. [2019-11-07 00:52:19,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2809 to 2807. [2019-11-07 00:52:19,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2807 states. [2019-11-07 00:52:19,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2807 states to 2807 states and 3740 transitions. [2019-11-07 00:52:19,606 INFO L78 Accepts]: Start accepts. Automaton has 2807 states and 3740 transitions. Word has length 172 [2019-11-07 00:52:19,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:52:19,607 INFO L462 AbstractCegarLoop]: Abstraction has 2807 states and 3740 transitions. [2019-11-07 00:52:19,607 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-07 00:52:19,607 INFO L276 IsEmpty]: Start isEmpty. Operand 2807 states and 3740 transitions. [2019-11-07 00:52:19,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2019-11-07 00:52:19,616 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:52:19,616 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:52:19,824 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:52:19,825 INFO L410 AbstractCegarLoop]: === Iteration 12 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:52:19,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:52:19,825 INFO L82 PathProgramCache]: Analyzing trace with hash -194664184, now seen corresponding path program 2 times [2019-11-07 00:52:19,825 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:52:19,826 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648025967] [2019-11-07 00:52:19,826 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:52:19,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:19,954 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-07 00:52:19,955 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648025967] [2019-11-07 00:52:19,955 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [604375627] [2019-11-07 00:52:19,955 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:52:20,568 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-11-07 00:52:20,568 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-07 00:52:20,575 INFO L256 TraceCheckSpWp]: Trace formula consists of 2328 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-07 00:52:20,580 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:52:20,678 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-11-07 00:52:20,678 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:52:20,898 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:52:20,938 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-07 00:52:21,017 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-07 00:52:21,017 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:52:21,017 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [7] total 16 [2019-11-07 00:52:21,018 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549906307] [2019-11-07 00:52:21,018 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-07 00:52:21,019 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:52:21,019 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-07 00:52:21,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2019-11-07 00:52:21,019 INFO L87 Difference]: Start difference. First operand 2807 states and 3740 transitions. Second operand 11 states. [2019-11-07 00:52:22,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:52:22,373 INFO L93 Difference]: Finished difference Result 5278 states and 6996 transitions. [2019-11-07 00:52:22,374 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-07 00:52:22,375 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 173 [2019-11-07 00:52:22,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:52:22,395 INFO L225 Difference]: With dead ends: 5278 [2019-11-07 00:52:22,395 INFO L226 Difference]: Without dead ends: 2595 [2019-11-07 00:52:22,405 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 336 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2019-11-07 00:52:22,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2595 states. [2019-11-07 00:52:22,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2595 to 2587. [2019-11-07 00:52:22,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2587 states. [2019-11-07 00:52:22,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2587 states to 2587 states and 3392 transitions. [2019-11-07 00:52:22,554 INFO L78 Accepts]: Start accepts. Automaton has 2587 states and 3392 transitions. Word has length 173 [2019-11-07 00:52:22,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:52:22,555 INFO L462 AbstractCegarLoop]: Abstraction has 2587 states and 3392 transitions. [2019-11-07 00:52:22,555 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-07 00:52:22,555 INFO L276 IsEmpty]: Start isEmpty. Operand 2587 states and 3392 transitions. [2019-11-07 00:52:22,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2019-11-07 00:52:22,562 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:52:22,562 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:52:22,772 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:52:22,772 INFO L410 AbstractCegarLoop]: === Iteration 13 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:52:22,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:52:22,772 INFO L82 PathProgramCache]: Analyzing trace with hash 2066785607, now seen corresponding path program 1 times [2019-11-07 00:52:22,773 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:52:22,773 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869503061] [2019-11-07 00:52:22,773 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:52:22,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:22,904 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-11-07 00:52:22,904 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869503061] [2019-11-07 00:52:22,904 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1776935669] [2019-11-07 00:52:22,905 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 00:52:23,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:52:23,516 INFO L256 TraceCheckSpWp]: Trace formula consists of 2434 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-07 00:52:23,523 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:52:23,661 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-11-07 00:52:23,661 INFO L321 TraceCheckSpWp]: Computing backward predicates...