/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/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--arc-rawmode.ko-entry_point.cil.out.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 01:53:07,505 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 01:53:07,507 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 01:53:07,525 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 01:53:07,526 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 01:53:07,528 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 01:53:07,530 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 01:53:07,539 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 01:53:07,543 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 01:53:07,546 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 01:53:07,549 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 01:53:07,551 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 01:53:07,552 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 01:53:07,553 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 01:53:07,556 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 01:53:07,557 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 01:53:07,558 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 01:53:07,559 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 01:53:07,561 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 01:53:07,565 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 01:53:07,569 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 01:53:07,574 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 01:53:07,575 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 01:53:07,576 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 01:53:07,578 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-24 01:53:07,578 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-24 01:53:07,578 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-24 01:53:07,580 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-24 01:53:07,581 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-24 01:53:07,582 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-24 01:53:07,582 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-24 01:53:07,583 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-24 01:53:07,584 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-24 01:53:07,585 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-24 01:53:07,586 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-24 01:53:07,586 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-24 01:53:07,587 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-24 01:53:07,587 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-24 01:53:07,587 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 01:53:07,588 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 01:53:07,589 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 01:53:07,590 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-24 01:53:07,604 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 01:53:07,604 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 01:53:07,605 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 01:53:07,605 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 01:53:07,606 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 01:53:07,606 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 01:53:07,606 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 01:53:07,606 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 01:53:07,606 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 01:53:07,607 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 01:53:07,607 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 01:53:07,607 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 01:53:07,607 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 01:53:07,607 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 01:53:07,607 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 01:53:07,608 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 01:53:07,608 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 01:53:07,609 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 01:53:07,609 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 01:53:07,609 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 01:53:07,609 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 01:53:07,609 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 01:53:07,610 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 01:53:07,610 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 01:53:07,610 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 01:53:07,610 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 01:53:07,610 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 01:53:07,611 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 01:53:07,611 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 01:53:07,611 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 01:53:07,611 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 01:53:07,611 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 01:53:07,611 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 01:53:07,612 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 01:53:07,612 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 01:53:07,612 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 01:53:07,612 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 01:53:07,612 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 01:53:07,912 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 01:53:07,934 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 01:53:07,938 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 01:53:07,939 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 01:53:07,940 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 01:53:07,940 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--arc-rawmode.ko-entry_point.cil.out.i [2019-11-24 01:53:08,005 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0009e8a06/c55e315de9d04726a8eb2afb4c12415a/FLAGfb4f88b55 [2019-11-24 01:53:08,769 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 01:53:08,769 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-linux-3.16-rc1/205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--arc-rawmode.ko-entry_point.cil.out.i [2019-11-24 01:53:08,804 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0009e8a06/c55e315de9d04726a8eb2afb4c12415a/FLAGfb4f88b55 [2019-11-24 01:53:08,869 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0009e8a06/c55e315de9d04726a8eb2afb4c12415a [2019-11-24 01:53:08,877 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 01:53:08,879 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 01:53:08,880 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 01:53:08,880 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 01:53:08,883 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 01:53:08,884 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:53:08" (1/1) ... [2019-11-24 01:53:08,887 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19967833 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:53:08, skipping insertion in model container [2019-11-24 01:53:08,888 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 01:53:08" (1/1) ... [2019-11-24 01:53:08,895 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 01:53:09,007 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 01:53:10,146 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 01:53:10,168 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 01:53:10,428 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 01:53:10,482 INFO L208 MainTranslator]: Completed translation [2019-11-24 01:53:10,482 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:53:10 WrapperNode [2019-11-24 01:53:10,482 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 01:53:10,483 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 01:53:10,484 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 01:53:10,484 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 01:53:10,494 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:53:10" (1/1) ... [2019-11-24 01:53:10,548 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:53:10" (1/1) ... [2019-11-24 01:53:10,615 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 01:53:10,615 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 01:53:10,615 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 01:53:10,616 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 01:53:10,626 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:53:10" (1/1) ... [2019-11-24 01:53:10,626 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:53:10" (1/1) ... [2019-11-24 01:53:10,634 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:53:10" (1/1) ... [2019-11-24 01:53:10,635 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:53:10" (1/1) ... [2019-11-24 01:53:10,662 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:53:10" (1/1) ... [2019-11-24 01:53:10,671 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:53:10" (1/1) ... [2019-11-24 01:53:10,677 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:53:10" (1/1) ... [2019-11-24 01:53:10,685 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 01:53:10,686 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 01:53:10,686 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 01:53:10,686 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 01:53:10,687 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:53:10" (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 [2019-11-24 01:53:10,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2019-11-24 01:53:10,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-24 01:53:10,766 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-24 01:53:10,767 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2019-11-24 01:53:10,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2019-11-24 01:53:10,767 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-24 01:53:10,767 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-24 01:53:10,768 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-24 01:53:10,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-11-24 01:53:10,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-24 01:53:10,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-24 01:53:10,768 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-24 01:53:10,769 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2019-11-24 01:53:10,769 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 01:53:10,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 01:53:13,006 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 01:53:13,006 INFO L284 CfgBuilder]: Removed 93 assume(true) statements. [2019-11-24 01:53:13,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:53:13 BoogieIcfgContainer [2019-11-24 01:53:13,008 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 01:53:13,009 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 01:53:13,009 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 01:53:13,013 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 01:53:13,013 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 01:53:08" (1/3) ... [2019-11-24 01:53:13,014 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e404587 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:53:13, skipping insertion in model container [2019-11-24 01:53:13,014 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 01:53:10" (2/3) ... [2019-11-24 01:53:13,015 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e404587 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 01:53:13, skipping insertion in model container [2019-11-24 01:53:13,015 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 01:53:13" (3/3) ... [2019-11-24 01:53:13,017 INFO L109 eAbstractionObserver]: Analyzing ICFG 205_9a_array_safes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--arc-rawmode.ko-entry_point.cil.out.i [2019-11-24 01:53:13,027 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 01:53:13,035 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-24 01:53:13,047 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-24 01:53:13,073 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 01:53:13,073 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 01:53:13,073 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 01:53:13,074 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 01:53:13,074 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 01:53:13,074 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 01:53:13,074 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 01:53:13,074 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 01:53:13,091 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2019-11-24 01:53:13,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-24 01:53:13,098 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 01:53:13,099 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 01:53:13,100 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 01:53:13,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 01:53:13,106 INFO L82 PathProgramCache]: Analyzing trace with hash -1285052, now seen corresponding path program 1 times [2019-11-24 01:53:13,114 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 01:53:13,115 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113662705] [2019-11-24 01:53:13,115 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 01:53:13,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 01:53:13,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 01:53:13,437 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113662705] [2019-11-24 01:53:13,439 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 01:53:13,439 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 01:53:13,440 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229287887] [2019-11-24 01:53:13,445 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 01:53:13,445 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 01:53:13,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 01:53:13,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 01:53:13,464 INFO L87 Difference]: Start difference. First operand 65 states. Second operand 3 states. [2019-11-24 01:53:13,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 01:53:13,582 INFO L93 Difference]: Finished difference Result 171 states and 288 transitions. [2019-11-24 01:53:13,584 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 01:53:13,586 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2019-11-24 01:53:13,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 01:53:13,606 INFO L225 Difference]: With dead ends: 171 [2019-11-24 01:53:13,607 INFO L226 Difference]: Without dead ends: 103 [2019-11-24 01:53:13,616 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 [2019-11-24 01:53:13,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2019-11-24 01:53:13,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2019-11-24 01:53:13,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2019-11-24 01:53:13,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 164 transitions. [2019-11-24 01:53:13,700 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 164 transitions. Word has length 13 [2019-11-24 01:53:13,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 01:53:13,700 INFO L462 AbstractCegarLoop]: Abstraction has 103 states and 164 transitions. [2019-11-24 01:53:13,701 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 01:53:13,701 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 164 transitions. [2019-11-24 01:53:13,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-11-24 01:53:13,703 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 01:53:13,703 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 01:53:13,703 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 01:53:13,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 01:53:13,704 INFO L82 PathProgramCache]: Analyzing trace with hash 1687434206, now seen corresponding path program 1 times [2019-11-24 01:53:13,704 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 01:53:13,704 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924051747] [2019-11-24 01:53:13,704 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 01:53:13,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 01:53:13,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 01:53:13,838 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924051747] [2019-11-24 01:53:13,838 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 01:53:13,839 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 01:53:13,839 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123124669] [2019-11-24 01:53:13,840 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 01:53:13,841 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 01:53:13,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 01:53:13,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 01:53:13,841 INFO L87 Difference]: Start difference. First operand 103 states and 164 transitions. Second operand 3 states. [2019-11-24 01:53:13,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 01:53:13,883 INFO L93 Difference]: Finished difference Result 202 states and 322 transitions. [2019-11-24 01:53:13,885 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 01:53:13,885 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2019-11-24 01:53:13,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 01:53:13,886 INFO L225 Difference]: With dead ends: 202 [2019-11-24 01:53:13,886 INFO L226 Difference]: Without dead ends: 104 [2019-11-24 01:53:13,889 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 [2019-11-24 01:53:13,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2019-11-24 01:53:13,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2019-11-24 01:53:13,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2019-11-24 01:53:13,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 165 transitions. [2019-11-24 01:53:13,910 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 165 transitions. Word has length 17 [2019-11-24 01:53:13,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 01:53:13,911 INFO L462 AbstractCegarLoop]: Abstraction has 104 states and 165 transitions. [2019-11-24 01:53:13,911 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 01:53:13,911 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 165 transitions. [2019-11-24 01:53:13,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-11-24 01:53:13,913 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 01:53:13,913 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 01:53:13,914 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 01:53:13,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 01:53:13,914 INFO L82 PathProgramCache]: Analyzing trace with hash -1555266817, now seen corresponding path program 1 times [2019-11-24 01:53:13,955 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 01:53:13,955 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591361372] [2019-11-24 01:53:13,955 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 01:53:14,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 01:53:14,060 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-24 01:53:14,061 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591361372] [2019-11-24 01:53:14,062 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 01:53:14,062 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 01:53:14,062 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204391417] [2019-11-24 01:53:14,063 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 01:53:14,063 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 01:53:14,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 01:53:14,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 01:53:14,065 INFO L87 Difference]: Start difference. First operand 104 states and 165 transitions. Second operand 3 states. [2019-11-24 01:53:14,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 01:53:14,096 INFO L93 Difference]: Finished difference Result 202 states and 320 transitions. [2019-11-24 01:53:14,100 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 01:53:14,100 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2019-11-24 01:53:14,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 01:53:14,101 INFO L225 Difference]: With dead ends: 202 [2019-11-24 01:53:14,101 INFO L226 Difference]: Without dead ends: 103 [2019-11-24 01:53:14,105 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 [2019-11-24 01:53:14,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2019-11-24 01:53:14,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2019-11-24 01:53:14,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2019-11-24 01:53:14,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 161 transitions. [2019-11-24 01:53:14,122 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 161 transitions. Word has length 18 [2019-11-24 01:53:14,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 01:53:14,125 INFO L462 AbstractCegarLoop]: Abstraction has 103 states and 161 transitions. [2019-11-24 01:53:14,125 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 01:53:14,125 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 161 transitions. [2019-11-24 01:53:14,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-11-24 01:53:14,126 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 01:53:14,126 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 01:53:14,127 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 01:53:14,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 01:53:14,127 INFO L82 PathProgramCache]: Analyzing trace with hash -1338330858, now seen corresponding path program 1 times [2019-11-24 01:53:14,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 01:53:14,128 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261751663] [2019-11-24 01:53:14,129 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 01:53:14,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 01:53:14,239 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-24 01:53:14,240 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261751663] [2019-11-24 01:53:14,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 01:53:14,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-24 01:53:14,241 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885779693] [2019-11-24 01:53:14,241 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-24 01:53:14,242 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 01:53:14,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-24 01:53:14,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-24 01:53:14,242 INFO L87 Difference]: Start difference. First operand 103 states and 161 transitions. Second operand 4 states. [2019-11-24 01:53:14,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 01:53:14,328 INFO L93 Difference]: Finished difference Result 201 states and 314 transitions. [2019-11-24 01:53:14,328 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-24 01:53:14,328 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 28 [2019-11-24 01:53:14,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 01:53:14,331 INFO L225 Difference]: With dead ends: 201 [2019-11-24 01:53:14,331 INFO L226 Difference]: Without dead ends: 197 [2019-11-24 01:53:14,331 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-24 01:53:14,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2019-11-24 01:53:14,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 189. [2019-11-24 01:53:14,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2019-11-24 01:53:14,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 300 transitions. [2019-11-24 01:53:14,362 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 300 transitions. Word has length 28 [2019-11-24 01:53:14,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 01:53:14,362 INFO L462 AbstractCegarLoop]: Abstraction has 189 states and 300 transitions. [2019-11-24 01:53:14,362 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-24 01:53:14,362 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 300 transitions. [2019-11-24 01:53:14,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-11-24 01:53:14,369 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 01:53:14,369 INFO L410 BasicCegarLoop]: trace histogram [3, 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] [2019-11-24 01:53:14,369 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 01:53:14,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 01:53:14,370 INFO L82 PathProgramCache]: Analyzing trace with hash 1015848006, now seen corresponding path program 1 times [2019-11-24 01:53:14,370 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 01:53:14,370 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088085295] [2019-11-24 01:53:14,371 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 01:53:14,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 01:53:14,443 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-24 01:53:14,444 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088085295] [2019-11-24 01:53:14,444 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 01:53:14,444 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 01:53:14,444 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303426399] [2019-11-24 01:53:14,446 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 01:53:14,447 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 01:53:14,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 01:53:14,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 01:53:14,447 INFO L87 Difference]: Start difference. First operand 189 states and 300 transitions. Second operand 3 states. [2019-11-24 01:53:14,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 01:53:14,500 INFO L93 Difference]: Finished difference Result 336 states and 529 transitions. [2019-11-24 01:53:14,500 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 01:53:14,500 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 45 [2019-11-24 01:53:14,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 01:53:14,501 INFO L225 Difference]: With dead ends: 336 [2019-11-24 01:53:14,501 INFO L226 Difference]: Without dead ends: 152 [2019-11-24 01:53:14,502 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 [2019-11-24 01:53:14,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2019-11-24 01:53:14,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 142. [2019-11-24 01:53:14,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2019-11-24 01:53:14,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 223 transitions. [2019-11-24 01:53:14,512 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 223 transitions. Word has length 45 [2019-11-24 01:53:14,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 01:53:14,512 INFO L462 AbstractCegarLoop]: Abstraction has 142 states and 223 transitions. [2019-11-24 01:53:14,512 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 01:53:14,512 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 223 transitions. [2019-11-24 01:53:14,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-11-24 01:53:14,514 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 01:53:14,514 INFO L410 BasicCegarLoop]: trace histogram [3, 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] [2019-11-24 01:53:14,514 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 01:53:14,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 01:53:14,514 INFO L82 PathProgramCache]: Analyzing trace with hash 226898050, now seen corresponding path program 2 times [2019-11-24 01:53:14,515 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 01:53:14,515 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416160092] [2019-11-24 01:53:14,515 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 01:53:14,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 01:53:14,583 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-24 01:53:14,583 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416160092] [2019-11-24 01:53:14,584 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 01:53:14,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-24 01:53:14,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181550975] [2019-11-24 01:53:14,585 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-24 01:53:14,585 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 01:53:14,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-24 01:53:14,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-24 01:53:14,585 INFO L87 Difference]: Start difference. First operand 142 states and 223 transitions. Second operand 4 states. [2019-11-24 01:53:14,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 01:53:14,689 INFO L93 Difference]: Finished difference Result 565 states and 884 transitions. [2019-11-24 01:53:14,689 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-24 01:53:14,689 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2019-11-24 01:53:14,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 01:53:14,692 INFO L225 Difference]: With dead ends: 565 [2019-11-24 01:53:14,692 INFO L226 Difference]: Without dead ends: 439 [2019-11-24 01:53:14,693 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-24 01:53:14,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2019-11-24 01:53:14,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 146. [2019-11-24 01:53:14,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2019-11-24 01:53:14,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 227 transitions. [2019-11-24 01:53:14,727 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 227 transitions. Word has length 45 [2019-11-24 01:53:14,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 01:53:14,729 INFO L462 AbstractCegarLoop]: Abstraction has 146 states and 227 transitions. [2019-11-24 01:53:14,729 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-24 01:53:14,729 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 227 transitions. [2019-11-24 01:53:14,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-11-24 01:53:14,731 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 01:53:14,731 INFO L410 BasicCegarLoop]: trace histogram [3, 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] [2019-11-24 01:53:14,733 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 01:53:14,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 01:53:14,733 INFO L82 PathProgramCache]: Analyzing trace with hash -812103362, now seen corresponding path program 1 times [2019-11-24 01:53:14,733 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 01:53:14,734 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743341351] [2019-11-24 01:53:14,734 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 01:53:14,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 01:53:14,817 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-11-24 01:53:14,817 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743341351] [2019-11-24 01:53:14,818 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-24 01:53:14,818 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-24 01:53:14,818 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068955062] [2019-11-24 01:53:14,818 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-24 01:53:14,819 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 01:53:14,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-24 01:53:14,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-24 01:53:14,819 INFO L87 Difference]: Start difference. First operand 146 states and 227 transitions. Second operand 3 states. [2019-11-24 01:53:14,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 01:53:14,835 INFO L93 Difference]: Finished difference Result 288 states and 448 transitions. [2019-11-24 01:53:14,835 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-24 01:53:14,835 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2019-11-24 01:53:14,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 01:53:14,837 INFO L225 Difference]: With dead ends: 288 [2019-11-24 01:53:14,837 INFO L226 Difference]: Without dead ends: 147 [2019-11-24 01:53:14,838 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 [2019-11-24 01:53:14,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2019-11-24 01:53:14,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2019-11-24 01:53:14,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2019-11-24 01:53:14,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 228 transitions. [2019-11-24 01:53:14,849 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 228 transitions. Word has length 46 [2019-11-24 01:53:14,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 01:53:14,850 INFO L462 AbstractCegarLoop]: Abstraction has 147 states and 228 transitions. [2019-11-24 01:53:14,850 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-24 01:53:14,850 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 228 transitions. [2019-11-24 01:53:14,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-11-24 01:53:14,851 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 01:53:14,851 INFO L410 BasicCegarLoop]: trace histogram [3, 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] [2019-11-24 01:53:14,852 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 01:53:14,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 01:53:14,852 INFO L82 PathProgramCache]: Analyzing trace with hash -1270662208, now seen corresponding path program 1 times [2019-11-24 01:53:14,852 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 01:53:14,853 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632326921] [2019-11-24 01:53:14,853 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 01:53:14,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 01:53:15,034 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-24 01:53:15,036 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632326921] [2019-11-24 01:53:15,036 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [958660016] [2019-11-24 01:53:15,036 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-24 01:53:15,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 01:53:15,287 INFO L255 TraceCheckSpWp]: Trace formula consists of 556 conjuncts, 3 conjunts are in the unsatisfiable core [2019-11-24 01:53:15,297 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 01:53:15,339 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-24 01:53:15,339 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 01:53:15,368 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-24 01:53:15,369 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1688067620] [2019-11-24 01:53:15,420 INFO L159 IcfgInterpreter]: Started Sifa with 39 locations of interest [2019-11-24 01:53:15,420 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 01:53:15,426 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 01:53:15,437 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 01:53:15,438 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 01:53:17,073 WARN L192 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 368 [2019-11-24 01:53:17,414 WARN L192 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 465 DAG size of output: 465 [2019-11-24 01:53:17,681 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 01:53:17,872 WARN L192 SmtUtils]: Spent 188.00 ms on a formula simplification that was a NOOP. DAG size: 466 [2019-11-24 01:53:18,374 WARN L192 SmtUtils]: Spent 218.00 ms on a formula simplification that was a NOOP. DAG size: 464 [2019-11-24 01:53:18,801 WARN L192 SmtUtils]: Spent 216.00 ms on a formula simplification that was a NOOP. DAG size: 462 [2019-11-24 01:53:19,611 WARN L192 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 82 [2019-11-24 01:53:19,682 WARN L227 Elim1Store]: Array PQE input equivalent to false [2019-11-24 01:53:20,283 WARN L192 SmtUtils]: Spent 598.00 ms on a formula simplification that was a NOOP. DAG size: 637 [2019-11-24 01:53:22,088 WARN L192 SmtUtils]: Spent 1.27 s on a formula simplification that was a NOOP. DAG size: 296 [2019-11-24 01:53:22,730 WARN L192 SmtUtils]: Spent 587.00 ms on a formula simplification that was a NOOP. DAG size: 742 [2019-11-24 01:53:24,351 WARN L192 SmtUtils]: Spent 1.21 s on a formula simplification that was a NOOP. DAG size: 296 [2019-11-24 01:53:25,031 WARN L192 SmtUtils]: Spent 630.00 ms on a formula simplification that was a NOOP. DAG size: 781 [2019-11-24 01:53:25,770 WARN L192 SmtUtils]: Spent 417.00 ms on a formula simplification. DAG size of input: 798 DAG size of output: 788 [2019-11-24 01:53:26,225 WARN L192 SmtUtils]: Spent 434.00 ms on a formula simplification that was a NOOP. DAG size: 788 [2019-11-24 01:53:27,778 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 134