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 --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/systemc/transmitter.04.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:32:20,663 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:32:20,665 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:32:20,677 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:32:20,678 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:32:20,679 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:32:20,680 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:32:20,682 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:32:20,684 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:32:20,684 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:32:20,685 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:32:20,686 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:32:20,687 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:32:20,688 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:32:20,689 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:32:20,690 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:32:20,690 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:32:20,691 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:32:20,693 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:32:20,695 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:32:20,696 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:32:20,697 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:32:20,698 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:32:20,699 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:32:20,701 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 03:32:20,701 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 03:32:20,702 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 03:32:20,702 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 03:32:20,703 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 03:32:20,704 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 03:32:20,704 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:32:20,705 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:32:20,706 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:32:20,706 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:32:20,707 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:32:20,707 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:32:20,708 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:32:20,708 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:32:20,709 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:32:20,709 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:32:20,710 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:32:20,711 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-15 03:32:20,725 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:32:20,725 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:32:20,726 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:32:20,727 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:32:20,727 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:32:20,727 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:32:20,727 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:32:20,728 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:32:20,728 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:32:20,728 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:32:20,728 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:32:20,728 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:32:20,729 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:32:20,729 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:32:20,729 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:32:20,729 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:32:20,729 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:32:20,730 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:32:20,730 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:32:20,730 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:32:20,730 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:32:20,730 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:32:20,731 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:32:20,731 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:32:20,731 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:32:20,731 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:32:20,732 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:32:20,732 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:32:20,732 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-15 03:32:21,027 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:32:21,039 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:32:21,043 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:32:21,044 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:32:21,045 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:32:21,045 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/transmitter.04.cil.c [2019-10-15 03:32:21,119 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3389b4341/67e8fb2ee4504d44aabfb16b5013794c/FLAG63f8668f3 [2019-10-15 03:32:21,648 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:32:21,652 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/transmitter.04.cil.c [2019-10-15 03:32:21,675 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3389b4341/67e8fb2ee4504d44aabfb16b5013794c/FLAG63f8668f3 [2019-10-15 03:32:21,959 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3389b4341/67e8fb2ee4504d44aabfb16b5013794c [2019-10-15 03:32:21,969 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:32:21,971 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:32:21,972 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:32:21,972 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:32:21,975 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:32:21,976 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:32:21" (1/1) ... [2019-10-15 03:32:21,979 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b20f996 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:32:21, skipping insertion in model container [2019-10-15 03:32:21,979 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:32:21" (1/1) ... [2019-10-15 03:32:21,986 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:32:22,043 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:32:22,382 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:32:22,391 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:32:22,556 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:32:22,579 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:32:22,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:32:22 WrapperNode [2019-10-15 03:32:22,580 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:32:22,581 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:32:22,581 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:32:22,581 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:32:22,591 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:32:22" (1/1) ... [2019-10-15 03:32:22,591 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:32:22" (1/1) ... [2019-10-15 03:32:22,599 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:32:22" (1/1) ... [2019-10-15 03:32:22,599 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:32:22" (1/1) ... [2019-10-15 03:32:22,611 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:32:22" (1/1) ... [2019-10-15 03:32:22,625 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:32:22" (1/1) ... [2019-10-15 03:32:22,628 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:32:22" (1/1) ... [2019-10-15 03:32:22,633 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:32:22,633 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:32:22,633 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:32:22,633 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:32:22,634 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:32:22" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:32:22,696 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:32:22,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:32:22,697 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2019-10-15 03:32:22,697 INFO L138 BoogieDeclarations]: Found implementation of procedure master [2019-10-15 03:32:22,697 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit1 [2019-10-15 03:32:22,697 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit2 [2019-10-15 03:32:22,697 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit3 [2019-10-15 03:32:22,698 INFO L138 BoogieDeclarations]: Found implementation of procedure transmit4 [2019-10-15 03:32:22,698 INFO L138 BoogieDeclarations]: Found implementation of procedure is_master_triggered [2019-10-15 03:32:22,698 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit1_triggered [2019-10-15 03:32:22,698 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit2_triggered [2019-10-15 03:32:22,698 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit3_triggered [2019-10-15 03:32:22,698 INFO L138 BoogieDeclarations]: Found implementation of procedure is_transmit4_triggered [2019-10-15 03:32:22,699 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2019-10-15 03:32:22,699 INFO L138 BoogieDeclarations]: Found implementation of procedure init_threads [2019-10-15 03:32:22,699 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2019-10-15 03:32:22,699 INFO L138 BoogieDeclarations]: Found implementation of procedure eval [2019-10-15 03:32:22,699 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2019-10-15 03:32:22,699 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2019-10-15 03:32:22,700 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2019-10-15 03:32:22,700 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2019-10-15 03:32:22,700 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_time_events [2019-10-15 03:32:22,700 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_time_events [2019-10-15 03:32:22,700 INFO L138 BoogieDeclarations]: Found implementation of procedure init_model [2019-10-15 03:32:22,700 INFO L138 BoogieDeclarations]: Found implementation of procedure stop_simulation [2019-10-15 03:32:22,701 INFO L138 BoogieDeclarations]: Found implementation of procedure start_simulation [2019-10-15 03:32:22,701 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:32:22,701 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:32:22,701 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:32:22,701 INFO L130 BoogieDeclarations]: Found specification of procedure error [2019-10-15 03:32:22,702 INFO L130 BoogieDeclarations]: Found specification of procedure is_master_triggered [2019-10-15 03:32:22,702 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit1_triggered [2019-10-15 03:32:22,702 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit2_triggered [2019-10-15 03:32:22,702 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit3_triggered [2019-10-15 03:32:22,702 INFO L130 BoogieDeclarations]: Found specification of procedure is_transmit4_triggered [2019-10-15 03:32:22,702 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2019-10-15 03:32:22,702 INFO L130 BoogieDeclarations]: Found specification of procedure master [2019-10-15 03:32:22,703 INFO L130 BoogieDeclarations]: Found specification of procedure transmit1 [2019-10-15 03:32:22,703 INFO L130 BoogieDeclarations]: Found specification of procedure transmit2 [2019-10-15 03:32:22,703 INFO L130 BoogieDeclarations]: Found specification of procedure transmit3 [2019-10-15 03:32:22,703 INFO L130 BoogieDeclarations]: Found specification of procedure transmit4 [2019-10-15 03:32:22,703 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2019-10-15 03:32:22,703 INFO L130 BoogieDeclarations]: Found specification of procedure init_threads [2019-10-15 03:32:22,704 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2019-10-15 03:32:22,704 INFO L130 BoogieDeclarations]: Found specification of procedure eval [2019-10-15 03:32:22,704 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2019-10-15 03:32:22,704 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2019-10-15 03:32:22,704 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2019-10-15 03:32:22,704 INFO L130 BoogieDeclarations]: Found specification of procedure fire_time_events [2019-10-15 03:32:22,704 INFO L130 BoogieDeclarations]: Found specification of procedure reset_time_events [2019-10-15 03:32:22,704 INFO L130 BoogieDeclarations]: Found specification of procedure init_model [2019-10-15 03:32:22,705 INFO L130 BoogieDeclarations]: Found specification of procedure stop_simulation [2019-10-15 03:32:22,705 INFO L130 BoogieDeclarations]: Found specification of procedure start_simulation [2019-10-15 03:32:22,705 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:32:22,705 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:32:22,705 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:32:23,899 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:32:23,899 INFO L284 CfgBuilder]: Removed 8 assume(true) statements. [2019-10-15 03:32:23,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:32:23 BoogieIcfgContainer [2019-10-15 03:32:23,904 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:32:23,906 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:32:23,906 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:32:23,911 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:32:23,911 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:32:21" (1/3) ... [2019-10-15 03:32:23,912 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73f4114c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:32:23, skipping insertion in model container [2019-10-15 03:32:23,912 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:32:22" (2/3) ... [2019-10-15 03:32:23,912 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73f4114c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:32:23, skipping insertion in model container [2019-10-15 03:32:23,912 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:32:23" (3/3) ... [2019-10-15 03:32:23,916 INFO L109 eAbstractionObserver]: Analyzing ICFG transmitter.04.cil.c [2019-10-15 03:32:23,926 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:32:23,935 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:32:23,947 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:32:23,973 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:32:23,974 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:32:23,974 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:32:23,974 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:32:23,974 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:32:23,974 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:32:23,975 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:32:23,975 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:32:23,996 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states. [2019-10-15 03:32:24,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2019-10-15 03:32:24,006 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:32:24,006 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:32:24,008 INFO L410 AbstractCegarLoop]: === Iteration 1 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:32:24,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:32:24,013 INFO L82 PathProgramCache]: Analyzing trace with hash 278306888, now seen corresponding path program 1 times [2019-10-15 03:32:24,019 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:32:24,020 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988623799] [2019-10-15 03:32:24,020 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:32:24,020 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:32:24,021 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:32:24,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:32:24,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:32:24,355 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988623799] [2019-10-15 03:32:24,356 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:32:24,356 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 03:32:24,357 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321043349] [2019-10-15 03:32:24,361 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:32:24,362 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:32:24,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:32:24,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 03:32:24,378 INFO L87 Difference]: Start difference. First operand 157 states. Second operand 4 states. [2019-10-15 03:32:24,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:32:24,861 INFO L93 Difference]: Finished difference Result 432 states and 596 transitions. [2019-10-15 03:32:24,862 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 03:32:24,863 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 80 [2019-10-15 03:32:24,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:32:24,880 INFO L225 Difference]: With dead ends: 432 [2019-10-15 03:32:24,880 INFO L226 Difference]: Without dead ends: 279 [2019-10-15 03:32:24,886 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 03:32:24,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2019-10-15 03:32:24,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 275. [2019-10-15 03:32:24,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2019-10-15 03:32:24,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 351 transitions. [2019-10-15 03:32:24,985 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 351 transitions. Word has length 80 [2019-10-15 03:32:24,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:32:24,986 INFO L462 AbstractCegarLoop]: Abstraction has 275 states and 351 transitions. [2019-10-15 03:32:24,986 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:32:24,987 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 351 transitions. [2019-10-15 03:32:25,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2019-10-15 03:32:25,002 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:32:25,002 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:32:25,002 INFO L410 AbstractCegarLoop]: === Iteration 2 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:32:25,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:32:25,004 INFO L82 PathProgramCache]: Analyzing trace with hash -2118130103, now seen corresponding path program 1 times [2019-10-15 03:32:25,005 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:32:25,005 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768351352] [2019-10-15 03:32:25,006 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:32:25,006 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:32:25,006 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:32:25,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:32:25,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:32:25,236 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768351352] [2019-10-15 03:32:25,236 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:32:25,236 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 03:32:25,237 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80386804] [2019-10-15 03:32:25,241 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:32:25,241 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:32:25,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:32:25,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 03:32:25,242 INFO L87 Difference]: Start difference. First operand 275 states and 351 transitions. Second operand 4 states. [2019-10-15 03:32:25,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:32:25,597 INFO L93 Difference]: Finished difference Result 784 states and 1055 transitions. [2019-10-15 03:32:25,599 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 03:32:25,599 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 80 [2019-10-15 03:32:25,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:32:25,608 INFO L225 Difference]: With dead ends: 784 [2019-10-15 03:32:25,609 INFO L226 Difference]: Without dead ends: 525 [2019-10-15 03:32:25,614 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 03:32:25,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525 states. [2019-10-15 03:32:25,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525 to 520. [2019-10-15 03:32:25,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 520 states. [2019-10-15 03:32:25,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 660 transitions. [2019-10-15 03:32:25,672 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 660 transitions. Word has length 80 [2019-10-15 03:32:25,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:32:25,672 INFO L462 AbstractCegarLoop]: Abstraction has 520 states and 660 transitions. [2019-10-15 03:32:25,673 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:32:25,673 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 660 transitions. [2019-10-15 03:32:25,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2019-10-15 03:32:25,674 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:32:25,674 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:32:25,675 INFO L410 AbstractCegarLoop]: === Iteration 3 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:32:25,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:32:25,675 INFO L82 PathProgramCache]: Analyzing trace with hash 412020584, now seen corresponding path program 1 times [2019-10-15 03:32:25,675 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:32:25,675 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423603575] [2019-10-15 03:32:25,676 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:32:25,676 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:32:25,676 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:32:25,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:32:25,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:32:25,761 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423603575] [2019-10-15 03:32:25,761 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:32:25,762 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 03:32:25,762 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770203159] [2019-10-15 03:32:25,762 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:32:25,763 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:32:25,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:32:25,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 03:32:25,763 INFO L87 Difference]: Start difference. First operand 520 states and 660 transitions. Second operand 4 states. [2019-10-15 03:32:26,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:32:26,084 INFO L93 Difference]: Finished difference Result 1512 states and 2034 transitions. [2019-10-15 03:32:26,085 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 03:32:26,085 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 80 [2019-10-15 03:32:26,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:32:26,092 INFO L225 Difference]: With dead ends: 1512 [2019-10-15 03:32:26,093 INFO L226 Difference]: Without dead ends: 1008 [2019-10-15 03:32:26,095 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 03:32:26,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2019-10-15 03:32:26,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 999. [2019-10-15 03:32:26,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 999 states. [2019-10-15 03:32:26,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 999 states to 999 states and 1261 transitions. [2019-10-15 03:32:26,176 INFO L78 Accepts]: Start accepts. Automaton has 999 states and 1261 transitions. Word has length 80 [2019-10-15 03:32:26,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:32:26,177 INFO L462 AbstractCegarLoop]: Abstraction has 999 states and 1261 transitions. [2019-10-15 03:32:26,177 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:32:26,178 INFO L276 IsEmpty]: Start isEmpty. Operand 999 states and 1261 transitions. [2019-10-15 03:32:26,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2019-10-15 03:32:26,180 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:32:26,181 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:32:26,181 INFO L410 AbstractCegarLoop]: === Iteration 4 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:32:26,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:32:26,181 INFO L82 PathProgramCache]: Analyzing trace with hash -131310214, now seen corresponding path program 1 times [2019-10-15 03:32:26,182 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:32:26,182 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538396239] [2019-10-15 03:32:26,182 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:32:26,182 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:32:26,182 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:32:26,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:32:26,299 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-15 03:32:26,299 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538396239] [2019-10-15 03:32:26,300 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:32:26,300 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 03:32:26,300 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402351371] [2019-10-15 03:32:26,303 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:32:26,303 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:32:26,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:32:26,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-15 03:32:26,304 INFO L87 Difference]: Start difference. First operand 999 states and 1261 transitions. Second operand 4 states. [2019-10-15 03:32:26,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:32:26,515 INFO L93 Difference]: Finished difference Result 3057 states and 3972 transitions. [2019-10-15 03:32:26,516 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 03:32:26,516 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 96 [2019-10-15 03:32:26,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:32:26,536 INFO L225 Difference]: With dead ends: 3057 [2019-10-15 03:32:26,536 INFO L226 Difference]: Without dead ends: 2075 [2019-10-15 03:32:26,542 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-15 03:32:26,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2075 states. [2019-10-15 03:32:26,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2075 to 1389. [2019-10-15 03:32:26,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1389 states. [2019-10-15 03:32:26,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1389 states to 1389 states and 1848 transitions. [2019-10-15 03:32:26,701 INFO L78 Accepts]: Start accepts. Automaton has 1389 states and 1848 transitions. Word has length 96 [2019-10-15 03:32:26,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:32:26,702 INFO L462 AbstractCegarLoop]: Abstraction has 1389 states and 1848 transitions. [2019-10-15 03:32:26,702 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:32:26,702 INFO L276 IsEmpty]: Start isEmpty. Operand 1389 states and 1848 transitions. [2019-10-15 03:32:26,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2019-10-15 03:32:26,715 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:32:26,715 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-15 03:32:26,715 INFO L410 AbstractCegarLoop]: === Iteration 5 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:32:26,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:32:26,716 INFO L82 PathProgramCache]: Analyzing trace with hash -427602276, now seen corresponding path program 1 times [2019-10-15 03:32:26,716 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:32:26,716 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136371267] [2019-10-15 03:32:26,717 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:32:26,717 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:32:26,717 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:32:26,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:32:26,820 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-15 03:32:26,821 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136371267] [2019-10-15 03:32:26,821 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:32:26,821 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 03:32:26,821 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635474725] [2019-10-15 03:32:26,822 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:32:26,822 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:32:26,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:32:26,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:32:26,823 INFO L87 Difference]: Start difference. First operand 1389 states and 1848 transitions. Second operand 3 states. [2019-10-15 03:32:26,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:32:26,959 INFO L93 Difference]: Finished difference Result 3601 states and 4907 transitions. [2019-10-15 03:32:26,960 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:32:26,962 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 144 [2019-10-15 03:32:26,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:32:26,977 INFO L225 Difference]: With dead ends: 3601 [2019-10-15 03:32:26,978 INFO L226 Difference]: Without dead ends: 2229 [2019-10-15 03:32:26,985 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:32:26,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2229 states. [2019-10-15 03:32:27,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2229 to 1917. [2019-10-15 03:32:27,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1917 states. [2019-10-15 03:32:27,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1917 states to 1917 states and 2616 transitions. [2019-10-15 03:32:27,130 INFO L78 Accepts]: Start accepts. Automaton has 1917 states and 2616 transitions. Word has length 144 [2019-10-15 03:32:27,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:32:27,133 INFO L462 AbstractCegarLoop]: Abstraction has 1917 states and 2616 transitions. [2019-10-15 03:32:27,133 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:32:27,133 INFO L276 IsEmpty]: Start isEmpty. Operand 1917 states and 2616 transitions. [2019-10-15 03:32:27,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2019-10-15 03:32:27,142 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:32:27,142 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-15 03:32:27,142 INFO L410 AbstractCegarLoop]: === Iteration 6 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:32:27,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:32:27,143 INFO L82 PathProgramCache]: Analyzing trace with hash 232824637, now seen corresponding path program 1 times [2019-10-15 03:32:27,143 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:32:27,143 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889960534] [2019-10-15 03:32:27,143 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:32:27,144 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:32:27,144 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:32:27,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:32:27,304 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 6 proven. 11 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-15 03:32:27,304 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889960534] [2019-10-15 03:32:27,305 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2117483976] [2019-10-15 03:32:27,305 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:32:27,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:32:27,504 INFO L256 TraceCheckSpWp]: Trace formula consists of 917 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-15 03:32:27,519 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:32:27,566 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-10-15 03:32:27,567 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:32:27,793 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-10-15 03:32:27,794 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 03:32:27,794 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [6] total 7 [2019-10-15 03:32:27,795 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601611] [2019-10-15 03:32:27,795 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:32:27,796 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:32:27,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:32:27,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:32:27,796 INFO L87 Difference]: Start difference. First operand 1917 states and 2616 transitions. Second operand 4 states. [2019-10-15 03:32:28,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:32:28,364 INFO L93 Difference]: Finished difference Result 5662 states and 8096 transitions. [2019-10-15 03:32:28,364 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 03:32:28,365 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 145 [2019-10-15 03:32:28,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:32:28,405 INFO L225 Difference]: With dead ends: 5662 [2019-10-15 03:32:28,405 INFO L226 Difference]: Without dead ends: 3761 [2019-10-15 03:32:28,428 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 291 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-10-15 03:32:28,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3761 states. [2019-10-15 03:32:28,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3761 to 3701. [2019-10-15 03:32:28,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3701 states. [2019-10-15 03:32:28,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3701 states to 3701 states and 5024 transitions. [2019-10-15 03:32:28,700 INFO L78 Accepts]: Start accepts. Automaton has 3701 states and 5024 transitions. Word has length 145 [2019-10-15 03:32:28,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:32:28,701 INFO L462 AbstractCegarLoop]: Abstraction has 3701 states and 5024 transitions. [2019-10-15 03:32:28,701 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:32:28,701 INFO L276 IsEmpty]: Start isEmpty. Operand 3701 states and 5024 transitions. [2019-10-15 03:32:28,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2019-10-15 03:32:28,711 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:32:28,711 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-15 03:32:28,926 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:32:28,927 INFO L410 AbstractCegarLoop]: === Iteration 7 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:32:28,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:32:28,927 INFO L82 PathProgramCache]: Analyzing trace with hash -2106707675, now seen corresponding path program 1 times [2019-10-15 03:32:28,927 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:32:28,928 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232601041] [2019-10-15 03:32:28,928 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:32:28,928 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:32:28,928 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:32:28,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:32:28,993 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2019-10-15 03:32:28,993 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232601041] [2019-10-15 03:32:28,994 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:32:28,994 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 03:32:28,994 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951632742] [2019-10-15 03:32:28,995 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:32:28,995 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:32:28,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:32:28,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:32:28,996 INFO L87 Difference]: Start difference. First operand 3701 states and 5024 transitions. Second operand 3 states. [2019-10-15 03:32:29,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:32:29,414 INFO L93 Difference]: Finished difference Result 9555 states and 13238 transitions. [2019-10-15 03:32:29,415 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:32:29,415 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 146 [2019-10-15 03:32:29,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:32:29,459 INFO L225 Difference]: With dead ends: 9555 [2019-10-15 03:32:29,460 INFO L226 Difference]: Without dead ends: 5871 [2019-10-15 03:32:29,494 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 03:32:29,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5871 states. [2019-10-15 03:32:29,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5871 to 5395. [2019-10-15 03:32:29,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5395 states. [2019-10-15 03:32:29,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5395 states to 5395 states and 7378 transitions. [2019-10-15 03:32:29,954 INFO L78 Accepts]: Start accepts. Automaton has 5395 states and 7378 transitions. Word has length 146 [2019-10-15 03:32:29,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:32:29,957 INFO L462 AbstractCegarLoop]: Abstraction has 5395 states and 7378 transitions. [2019-10-15 03:32:29,957 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:32:29,957 INFO L276 IsEmpty]: Start isEmpty. Operand 5395 states and 7378 transitions. [2019-10-15 03:32:29,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2019-10-15 03:32:29,970 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:32:29,970 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-15 03:32:29,971 INFO L410 AbstractCegarLoop]: === Iteration 8 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:32:29,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:32:29,971 INFO L82 PathProgramCache]: Analyzing trace with hash 659427717, now seen corresponding path program 1 times [2019-10-15 03:32:29,971 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:32:29,972 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192420653] [2019-10-15 03:32:29,972 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:32:29,972 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:32:29,972 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:32:30,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:32:30,119 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-15 03:32:30,120 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192420653] [2019-10-15 03:32:30,120 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:32:30,120 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-15 03:32:30,121 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939908708] [2019-10-15 03:32:30,121 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-15 03:32:30,122 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:32:30,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-15 03:32:30,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:32:30,122 INFO L87 Difference]: Start difference. First operand 5395 states and 7378 transitions. Second operand 8 states. [2019-10-15 03:32:31,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:32:31,514 INFO L93 Difference]: Finished difference Result 14473 states and 20739 transitions. [2019-10-15 03:32:31,515 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-15 03:32:31,515 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 147 [2019-10-15 03:32:31,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:32:31,571 INFO L225 Difference]: With dead ends: 14473 [2019-10-15 03:32:31,571 INFO L226 Difference]: Without dead ends: 9095 [2019-10-15 03:32:31,626 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2019-10-15 03:32:31,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9095 states. [2019-10-15 03:32:32,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9095 to 9024. [2019-10-15 03:32:32,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9024 states. [2019-10-15 03:32:32,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9024 states to 9024 states and 12956 transitions. [2019-10-15 03:32:32,338 INFO L78 Accepts]: Start accepts. Automaton has 9024 states and 12956 transitions. Word has length 147 [2019-10-15 03:32:32,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:32:32,338 INFO L462 AbstractCegarLoop]: Abstraction has 9024 states and 12956 transitions. [2019-10-15 03:32:32,338 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-15 03:32:32,339 INFO L276 IsEmpty]: Start isEmpty. Operand 9024 states and 12956 transitions. [2019-10-15 03:32:32,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2019-10-15 03:32:32,353 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:32:32,353 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-15 03:32:32,354 INFO L410 AbstractCegarLoop]: === Iteration 9 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:32:32,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:32:32,354 INFO L82 PathProgramCache]: Analyzing trace with hash 1200881990, now seen corresponding path program 1 times [2019-10-15 03:32:32,354 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:32:32,355 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035589373] [2019-10-15 03:32:32,355 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:32:32,355 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:32:32,355 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:32:32,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:32:32,439 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-15 03:32:32,439 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035589373] [2019-10-15 03:32:32,440 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:32:32,440 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 03:32:32,440 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765986203] [2019-10-15 03:32:32,440 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 03:32:32,441 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:32:32,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 03:32:32,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 03:32:32,441 INFO L87 Difference]: Start difference. First operand 9024 states and 12956 transitions. Second operand 4 states. [2019-10-15 03:32:33,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:32:33,273 INFO L93 Difference]: Finished difference Result 14932 states and 21245 transitions. [2019-10-15 03:32:33,274 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-15 03:32:33,274 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 146 [2019-10-15 03:32:33,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:32:33,335 INFO L225 Difference]: With dead ends: 14932 [2019-10-15 03:32:33,336 INFO L226 Difference]: Without dead ends: 11100 [2019-10-15 03:32:33,359 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 03:32:33,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11100 states. [2019-10-15 03:32:33,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11100 to 11024. [2019-10-15 03:32:33,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11024 states. [2019-10-15 03:32:34,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11024 states to 11024 states and 15154 transitions. [2019-10-15 03:32:34,679 INFO L78 Accepts]: Start accepts. Automaton has 11024 states and 15154 transitions. Word has length 146 [2019-10-15 03:32:34,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:32:34,680 INFO L462 AbstractCegarLoop]: Abstraction has 11024 states and 15154 transitions. [2019-10-15 03:32:34,680 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 03:32:34,680 INFO L276 IsEmpty]: Start isEmpty. Operand 11024 states and 15154 transitions. [2019-10-15 03:32:34,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2019-10-15 03:32:34,698 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:32:34,700 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-15 03:32:34,700 INFO L410 AbstractCegarLoop]: === Iteration 10 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:32:34,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:32:34,700 INFO L82 PathProgramCache]: Analyzing trace with hash -1049664021, now seen corresponding path program 1 times [2019-10-15 03:32:34,701 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:32:34,701 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215776668] [2019-10-15 03:32:34,701 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:32:34,702 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:32:34,702 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:32:34,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:32:34,846 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2019-10-15 03:32:34,847 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215776668] [2019-10-15 03:32:34,847 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:32:34,847 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-15 03:32:34,847 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474577991] [2019-10-15 03:32:34,848 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 03:32:34,852 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:32:34,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 03:32:34,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-10-15 03:32:34,853 INFO L87 Difference]: Start difference. First operand 11024 states and 15154 transitions. Second operand 9 states. [2019-10-15 03:32:36,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:32:36,927 INFO L93 Difference]: Finished difference Result 34615 states and 49495 transitions. [2019-10-15 03:32:36,927 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-10-15 03:32:36,927 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 147 [2019-10-15 03:32:36,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:32:37,017 INFO L225 Difference]: With dead ends: 34615 [2019-10-15 03:32:37,018 INFO L226 Difference]: Without dead ends: 19246 [2019-10-15 03:32:37,094 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=235, Unknown=0, NotChecked=0, Total=342 [2019-10-15 03:32:37,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19246 states. [2019-10-15 03:32:37,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19246 to 17938. [2019-10-15 03:32:37,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17938 states. [2019-10-15 03:32:38,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17938 states to 17938 states and 24931 transitions. [2019-10-15 03:32:38,063 INFO L78 Accepts]: Start accepts. Automaton has 17938 states and 24931 transitions. Word has length 147 [2019-10-15 03:32:38,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:32:38,064 INFO L462 AbstractCegarLoop]: Abstraction has 17938 states and 24931 transitions. [2019-10-15 03:32:38,064 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-15 03:32:38,064 INFO L276 IsEmpty]: Start isEmpty. Operand 17938 states and 24931 transitions. [2019-10-15 03:32:38,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2019-10-15 03:32:38,082 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:32:38,082 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-15 03:32:38,083 INFO L410 AbstractCegarLoop]: === Iteration 11 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:32:38,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:32:38,083 INFO L82 PathProgramCache]: Analyzing trace with hash 432632579, now seen corresponding path program 1 times [2019-10-15 03:32:38,083 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:32:38,083 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150227774] [2019-10-15 03:32:38,084 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:32:38,084 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:32:38,084 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:32:38,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:32:38,149 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2019-10-15 03:32:38,150 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150227774] [2019-10-15 03:32:38,150 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [427002801] [2019-10-15 03:32:38,150 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:32:38,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:32:38,309 INFO L256 TraceCheckSpWp]: Trace formula consists of 957 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-15 03:32:38,316 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:32:38,385 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 03:32:38,385 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:32:38,527 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2019-10-15 03:32:38,528 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 03:32:38,528 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 3] total 6 [2019-10-15 03:32:38,528 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365023258] [2019-10-15 03:32:38,529 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 03:32:38,529 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:32:38,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 03:32:38,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-10-15 03:32:38,530 INFO L87 Difference]: Start difference. First operand 17938 states and 24931 transitions. Second operand 3 states. [2019-10-15 03:32:39,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:32:39,808 INFO L93 Difference]: Finished difference Result 34041 states and 49118 transitions. [2019-10-15 03:32:39,809 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 03:32:39,809 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 149 [2019-10-15 03:32:39,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:32:39,924 INFO L225 Difference]: With dead ends: 34041 [2019-10-15 03:32:39,925 INFO L226 Difference]: Without dead ends: 24031 [2019-10-15 03:32:40,257 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 297 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-10-15 03:32:40,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24031 states. [2019-10-15 03:32:41,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24031 to 21251. [2019-10-15 03:32:41,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21251 states. [2019-10-15 03:32:41,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21251 states to 21251 states and 29982 transitions. [2019-10-15 03:32:41,927 INFO L78 Accepts]: Start accepts. Automaton has 21251 states and 29982 transitions. Word has length 149 [2019-10-15 03:32:41,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:32:41,928 INFO L462 AbstractCegarLoop]: Abstraction has 21251 states and 29982 transitions. [2019-10-15 03:32:41,928 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 03:32:41,928 INFO L276 IsEmpty]: Start isEmpty. Operand 21251 states and 29982 transitions. [2019-10-15 03:32:41,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2019-10-15 03:32:41,956 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:32:41,956 INFO L380 BasicCegarLoop]: trace histogram [5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-15 03:32:42,161 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:32:42,161 INFO L410 AbstractCegarLoop]: === Iteration 12 === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:32:42,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:32:42,163 INFO L82 PathProgramCache]: Analyzing trace with hash -1641123869, now seen corresponding path program 1 times [2019-10-15 03:32:42,163 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:32:42,163 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818093436] [2019-10-15 03:32:42,163 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:32:42,164 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:32:42,164 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:32:42,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:32:43,430 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 21 proven. 14 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2019-10-15 03:32:43,431 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818093436] [2019-10-15 03:32:43,431 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1940274634] [2019-10-15 03:32:43,431 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:32:43,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:32:43,604 INFO L256 TraceCheckSpWp]: Trace formula consists of 1058 conjuncts, 21 conjunts are in the unsatisfiable core [2019-10-15 03:32:43,610 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:32:43,906 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-15 03:32:43,906 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:32:44,092 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:32:44,211 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:32:44,212 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:32:44,233 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:32:44,257 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 23 proven. 12 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2019-10-15 03:32:44,258 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-15 03:32:44,258 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [21, 8] total 34 [2019-10-15 03:32:44,258 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833471861] [2019-10-15 03:32:44,259 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-15 03:32:44,259 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:32:44,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-15 03:32:44,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=987, Unknown=0, NotChecked=0, Total=1122 [2019-10-15 03:32:44,260 INFO L87 Difference]: Start difference. First operand 21251 states and 29982 transitions. Second operand 11 states. [2019-10-15 03:32:48,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:32:48,212 INFO L93 Difference]: Finished difference Result 79763 states and 138390 transitions. [2019-10-15 03:32:48,212 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-10-15 03:32:48,213 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 170 [2019-10-15 03:32:48,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:32:48,548 INFO L225 Difference]: With dead ends: 79763 [2019-10-15 03:32:48,548 INFO L226 Difference]: Without dead ends: 58529 [2019-10-15 03:32:48,806 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 332 SyntacticMatches, 4 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 631 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=295, Invalid=1961, Unknown=0, NotChecked=0, Total=2256 [2019-10-15 03:32:48,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58529 states.