java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label45_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 03:11:15,981 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 03:11:15,984 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 03:11:15,995 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 03:11:15,995 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 03:11:15,996 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 03:11:15,998 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 03:11:15,999 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 03:11:16,001 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 03:11:16,002 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 03:11:16,003 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 03:11:16,003 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 03:11:16,004 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 03:11:16,005 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 03:11:16,007 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 03:11:16,007 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 03:11:16,008 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 03:11:16,010 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 03:11:16,012 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 03:11:16,014 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 03:11:16,015 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 03:11:16,016 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 03:11:16,019 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 03:11:16,019 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 03:11:16,019 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 03:11:16,020 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 03:11:16,021 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 03:11:16,022 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 03:11:16,023 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 03:11:16,024 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 03:11:16,024 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 03:11:16,025 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 03:11:16,025 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 03:11:16,025 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 03:11:16,026 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 03:11:16,027 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 03:11:16,027 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-11-07 03:11:16,050 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 03:11:16,051 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 03:11:16,053 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 03:11:16,053 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 03:11:16,053 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 03:11:16,053 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 03:11:16,054 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 03:11:16,054 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 03:11:16,054 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 03:11:16,054 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 03:11:16,054 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 03:11:16,055 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 03:11:16,056 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 03:11:16,056 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 03:11:16,056 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 03:11:16,056 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 03:11:16,059 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 03:11:16,059 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 03:11:16,059 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 03:11:16,059 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 03:11:16,060 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 03:11:16,060 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 03:11:16,060 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 03:11:16,060 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 03:11:16,060 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 03:11:16,061 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 03:11:16,061 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 03:11:16,061 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 03:11:16,061 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 03:11:16,061 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 03:11:16,062 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 03:11:16,063 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 03:11:16,063 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 03:11:16,063 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 03:11:16,129 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 03:11:16,143 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 03:11:16,147 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 03:11:16,149 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 03:11:16,149 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 03:11:16,150 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label45_true-unreach-call.c [2018-11-07 03:11:16,224 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32de0a616/6e417e6b7da7409a873ccf4833fbf510/FLAGa8a7f7b28 [2018-11-07 03:11:16,995 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 03:11:16,996 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label45_true-unreach-call.c [2018-11-07 03:11:17,029 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32de0a616/6e417e6b7da7409a873ccf4833fbf510/FLAGa8a7f7b28 [2018-11-07 03:11:17,050 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32de0a616/6e417e6b7da7409a873ccf4833fbf510 [2018-11-07 03:11:17,064 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 03:11:17,067 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 03:11:17,068 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 03:11:17,072 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 03:11:17,077 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 03:11:17,078 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:11:17" (1/1) ... [2018-11-07 03:11:17,082 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60268c1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:11:17, skipping insertion in model container [2018-11-07 03:11:17,083 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:11:17" (1/1) ... [2018-11-07 03:11:17,096 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 03:11:17,285 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 03:11:18,674 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 03:11:18,680 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 03:11:19,341 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 03:11:19,377 INFO L193 MainTranslator]: Completed translation [2018-11-07 03:11:19,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:11:19 WrapperNode [2018-11-07 03:11:19,378 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 03:11:19,379 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 03:11:19,380 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 03:11:19,380 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 03:11:19,391 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:11:19" (1/1) ... [2018-11-07 03:11:19,739 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:11:19" (1/1) ... [2018-11-07 03:11:19,752 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 03:11:19,753 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 03:11:19,753 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 03:11:19,753 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 03:11:19,766 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:11:19" (1/1) ... [2018-11-07 03:11:19,767 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:11:19" (1/1) ... [2018-11-07 03:11:19,794 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:11:19" (1/1) ... [2018-11-07 03:11:19,795 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:11:19" (1/1) ... [2018-11-07 03:11:19,935 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:11:19" (1/1) ... [2018-11-07 03:11:19,982 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:11:19" (1/1) ... [2018-11-07 03:11:20,024 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:11:19" (1/1) ... [2018-11-07 03:11:20,073 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 03:11:20,074 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 03:11:20,074 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 03:11:20,074 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 03:11:20,075 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:11:19" (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 [2018-11-07 03:11:20,150 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 03:11:20,150 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 03:11:20,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 03:11:20,151 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 03:11:20,151 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 03:11:20,151 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 03:11:20,151 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 03:11:20,152 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 03:11:20,152 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 03:11:20,152 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 03:11:20,152 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 03:11:20,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 03:11:20,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 03:11:20,154 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 03:11:20,154 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 03:11:30,768 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 03:11:30,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:11:30 BoogieIcfgContainer [2018-11-07 03:11:30,768 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 03:11:30,770 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 03:11:30,770 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 03:11:30,773 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 03:11:30,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 03:11:17" (1/3) ... [2018-11-07 03:11:30,774 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45ad23d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:11:30, skipping insertion in model container [2018-11-07 03:11:30,774 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:11:19" (2/3) ... [2018-11-07 03:11:30,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45ad23d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:11:30, skipping insertion in model container [2018-11-07 03:11:30,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:11:30" (3/3) ... [2018-11-07 03:11:30,778 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label45_true-unreach-call.c [2018-11-07 03:11:30,789 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 03:11:30,804 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 03:11:30,822 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 03:11:31,010 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 03:11:31,010 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 03:11:31,010 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 03:11:31,011 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 03:11:31,011 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 03:11:31,011 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 03:11:31,011 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 03:11:31,011 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 03:11:31,078 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-11-07 03:11:31,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-11-07 03:11:31,091 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:11:31,092 INFO L375 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] [2018-11-07 03:11:31,096 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:11:31,103 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:11:31,103 INFO L82 PathProgramCache]: Analyzing trace with hash -427450892, now seen corresponding path program 1 times [2018-11-07 03:11:31,106 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:11:31,157 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:11:31,157 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:11:31,157 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:11:31,158 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:11:31,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:11:31,635 WARN L179 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 03:11:31,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:11:31,770 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:11:31,770 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 03:11:31,771 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:11:31,777 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 03:11:31,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 03:11:31,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 03:11:31,800 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-11-07 03:11:39,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:11:39,672 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-11-07 03:11:39,673 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 03:11:39,674 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 58 [2018-11-07 03:11:39,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:11:39,719 INFO L225 Difference]: With dead ends: 2446 [2018-11-07 03:11:39,719 INFO L226 Difference]: Without dead ends: 1604 [2018-11-07 03:11:39,730 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 03:11:39,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-11-07 03:11:39,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-11-07 03:11:39,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-11-07 03:11:39,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2861 transitions. [2018-11-07 03:11:39,888 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2861 transitions. Word has length 58 [2018-11-07 03:11:39,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:11:39,889 INFO L480 AbstractCegarLoop]: Abstraction has 1604 states and 2861 transitions. [2018-11-07 03:11:39,889 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 03:11:39,889 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2861 transitions. [2018-11-07 03:11:39,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-11-07 03:11:39,900 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:11:39,901 INFO L375 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, 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] [2018-11-07 03:11:39,901 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:11:39,901 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:11:39,901 INFO L82 PathProgramCache]: Analyzing trace with hash -1706095754, now seen corresponding path program 1 times [2018-11-07 03:11:39,903 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:11:39,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:11:39,904 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:11:39,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:11:39,904 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:11:39,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:11:40,152 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:11:40,153 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:11:40,154 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 03:11:40,154 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:11:40,156 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 03:11:40,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 03:11:40,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 03:11:40,157 INFO L87 Difference]: Start difference. First operand 1604 states and 2861 transitions. Second operand 4 states. [2018-11-07 03:11:55,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:11:55,966 INFO L93 Difference]: Finished difference Result 6274 states and 11428 transitions. [2018-11-07 03:11:55,966 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 03:11:55,967 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 134 [2018-11-07 03:11:55,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:11:56,005 INFO L225 Difference]: With dead ends: 6274 [2018-11-07 03:11:56,005 INFO L226 Difference]: Without dead ends: 4676 [2018-11-07 03:11:56,017 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 03:11:56,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4676 states. [2018-11-07 03:11:56,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4676 to 4676. [2018-11-07 03:11:56,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4676 states. [2018-11-07 03:11:56,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4676 states to 4676 states and 7980 transitions. [2018-11-07 03:11:56,257 INFO L78 Accepts]: Start accepts. Automaton has 4676 states and 7980 transitions. Word has length 134 [2018-11-07 03:11:56,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:11:56,258 INFO L480 AbstractCegarLoop]: Abstraction has 4676 states and 7980 transitions. [2018-11-07 03:11:56,258 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 03:11:56,259 INFO L276 IsEmpty]: Start isEmpty. Operand 4676 states and 7980 transitions. [2018-11-07 03:11:56,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-11-07 03:11:56,275 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:11:56,275 INFO L375 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 03:11:56,276 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:11:56,276 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:11:56,277 INFO L82 PathProgramCache]: Analyzing trace with hash -1738242550, now seen corresponding path program 1 times [2018-11-07 03:11:56,277 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:11:56,279 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:11:56,279 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:11:56,279 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:11:56,279 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:11:56,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:11:56,642 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:11:56,643 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:11:56,643 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 03:11:56,643 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:11:56,644 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 03:11:56,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 03:11:56,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 03:11:56,645 INFO L87 Difference]: Start difference. First operand 4676 states and 7980 transitions. Second operand 6 states. [2018-11-07 03:12:04,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:12:04,102 INFO L93 Difference]: Finished difference Result 14179 states and 24917 transitions. [2018-11-07 03:12:04,104 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 03:12:04,104 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 172 [2018-11-07 03:12:04,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:12:04,156 INFO L225 Difference]: With dead ends: 14179 [2018-11-07 03:12:04,157 INFO L226 Difference]: Without dead ends: 9509 [2018-11-07 03:12:04,175 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 03:12:04,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9509 states. [2018-11-07 03:12:04,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9509 to 9424. [2018-11-07 03:12:04,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9424 states. [2018-11-07 03:12:04,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9424 states to 9424 states and 15810 transitions. [2018-11-07 03:12:04,461 INFO L78 Accepts]: Start accepts. Automaton has 9424 states and 15810 transitions. Word has length 172 [2018-11-07 03:12:04,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:12:04,461 INFO L480 AbstractCegarLoop]: Abstraction has 9424 states and 15810 transitions. [2018-11-07 03:12:04,461 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 03:12:04,462 INFO L276 IsEmpty]: Start isEmpty. Operand 9424 states and 15810 transitions. [2018-11-07 03:12:04,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2018-11-07 03:12:04,471 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:12:04,472 INFO L375 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 03:12:04,472 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:12:04,472 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:12:04,472 INFO L82 PathProgramCache]: Analyzing trace with hash 1389226247, now seen corresponding path program 1 times [2018-11-07 03:12:04,472 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:12:04,473 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:12:04,474 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:12:04,474 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:12:04,474 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:12:04,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:12:04,920 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:12:04,920 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:12:04,920 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 03:12:04,921 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:12:04,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 03:12:04,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 03:12:04,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-07 03:12:04,922 INFO L87 Difference]: Start difference. First operand 9424 states and 15810 transitions. Second operand 6 states. [2018-11-07 03:12:18,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:12:18,854 INFO L93 Difference]: Finished difference Result 34209 states and 61589 transitions. [2018-11-07 03:12:18,857 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-07 03:12:18,857 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 199 [2018-11-07 03:12:18,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:12:19,015 INFO L225 Difference]: With dead ends: 34209 [2018-11-07 03:12:19,016 INFO L226 Difference]: Without dead ends: 24791 [2018-11-07 03:12:19,115 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-07 03:12:19,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24791 states. [2018-11-07 03:12:19,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24791 to 24608. [2018-11-07 03:12:19,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24608 states. [2018-11-07 03:12:19,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24608 states to 24608 states and 39305 transitions. [2018-11-07 03:12:19,833 INFO L78 Accepts]: Start accepts. Automaton has 24608 states and 39305 transitions. Word has length 199 [2018-11-07 03:12:19,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:12:19,834 INFO L480 AbstractCegarLoop]: Abstraction has 24608 states and 39305 transitions. [2018-11-07 03:12:19,834 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 03:12:19,835 INFO L276 IsEmpty]: Start isEmpty. Operand 24608 states and 39305 transitions. [2018-11-07 03:12:19,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2018-11-07 03:12:19,845 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:12:19,846 INFO L375 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 03:12:19,846 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:12:19,846 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:12:19,847 INFO L82 PathProgramCache]: Analyzing trace with hash 446131319, now seen corresponding path program 1 times [2018-11-07 03:12:19,847 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:12:19,848 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:12:19,848 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:12:19,848 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:12:19,848 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:12:19,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:12:20,102 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:12:20,103 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:12:20,103 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 03:12:20,103 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:12:20,104 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 03:12:20,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 03:12:20,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 03:12:20,106 INFO L87 Difference]: Start difference. First operand 24608 states and 39305 transitions. Second operand 4 states. [2018-11-07 03:12:28,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:12:28,851 INFO L93 Difference]: Finished difference Result 62467 states and 103119 transitions. [2018-11-07 03:12:28,851 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 03:12:28,851 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 207 [2018-11-07 03:12:28,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:12:29,053 INFO L225 Difference]: With dead ends: 62467 [2018-11-07 03:12:29,053 INFO L226 Difference]: Without dead ends: 37865 [2018-11-07 03:12:29,175 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 03:12:29,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37865 states. [2018-11-07 03:12:30,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37865 to 37097. [2018-11-07 03:12:30,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37097 states. [2018-11-07 03:12:30,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37097 states to 37097 states and 53722 transitions. [2018-11-07 03:12:30,679 INFO L78 Accepts]: Start accepts. Automaton has 37097 states and 53722 transitions. Word has length 207 [2018-11-07 03:12:30,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:12:30,680 INFO L480 AbstractCegarLoop]: Abstraction has 37097 states and 53722 transitions. [2018-11-07 03:12:30,680 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 03:12:30,681 INFO L276 IsEmpty]: Start isEmpty. Operand 37097 states and 53722 transitions. [2018-11-07 03:12:30,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2018-11-07 03:12:30,741 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:12:30,742 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 03:12:30,742 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:12:30,743 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:12:30,743 INFO L82 PathProgramCache]: Analyzing trace with hash -433421620, now seen corresponding path program 1 times [2018-11-07 03:12:30,743 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:12:30,744 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:12:30,744 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:12:30,744 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:12:30,745 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:12:30,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:12:31,169 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 102 proven. 106 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 03:12:31,170 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 03:12:31,171 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 03:12:31,172 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 349 with the following transitions: [2018-11-07 03:12:31,181 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1987], [1995], [2003], [2011], [2019], [2027], [2035], [2043], [2051], [2059], [2067], [2075], [2083], [2091], [2099], [2107], [2115], [2123], [2131], [2139], [2147], [2155], [2163], [2171], [2179], [2187], [2195], [2203], [2211], [2219], [2227], [2231], [2233], [2236], [2244], [2252], [2260], [2268], [2276], [2284], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2524], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2585], [2589], [2593], [2597], [2601], [2605], [2609], [2613], [2617], [2621], [2625], [2629], [2633], [2637], [2641], [2645], [2649], [2653], [2657], [2661], [2665], [2669], [2673], [2677], [2681], [2685], [2689], [2693], [2697], [2701], [2705], [2709], [2713], [2717], [2721], [2725], [2729], [2733], [2737], [2741], [2745], [2749], [2753], [2757], [2761], [2765], [2769], [2773], [2777], [2781], [2785], [2789], [2793], [2796], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-11-07 03:12:31,288 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 03:12:31,289 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 03:12:37,683 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 03:12:37,685 INFO L272 AbstractInterpreter]: Visited 184 different actions 184 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-11-07 03:12:37,694 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:12:37,695 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 03:12:41,111 INFO L227 lantSequenceWeakener]: Weakened 340 states. On average, predicates are now at 75.51% of their original sizes. [2018-11-07 03:12:41,112 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 03:12:41,868 INFO L415 sIntCurrentIteration]: We unified 347 AI predicates to 347 [2018-11-07 03:12:41,868 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 03:12:41,869 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 03:12:41,869 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [5] total 12 [2018-11-07 03:12:41,870 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:12:41,870 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 03:12:41,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 03:12:41,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2018-11-07 03:12:41,871 INFO L87 Difference]: Start difference. First operand 37097 states and 53722 transitions. Second operand 9 states. [2018-11-07 03:12:47,096 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-11-07 03:14:56,965 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-07 03:14:56,966 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 03:14:56,972 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 03:14:56,973 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 03:14:56 BoogieIcfgContainer [2018-11-07 03:14:56,973 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 03:14:56,974 INFO L168 Benchmark]: Toolchain (without parser) took 219908.91 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 2.8 GB in the end (delta: -1.4 GB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-11-07 03:14:56,975 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 03:14:56,976 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2310.42 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 203.5 MB). Peak memory consumption was 203.5 MB. Max. memory is 7.1 GB. [2018-11-07 03:14:56,977 INFO L168 Benchmark]: Boogie Procedure Inliner took 373.22 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 778.0 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 54.6 MB. Max. memory is 7.1 GB. [2018-11-07 03:14:56,978 INFO L168 Benchmark]: Boogie Preprocessor took 320.32 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 23.9 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. [2018-11-07 03:14:56,979 INFO L168 Benchmark]: RCFGBuilder took 10694.97 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.6 GB in the end (delta: 655.2 MB). Peak memory consumption was 655.2 MB. Max. memory is 7.1 GB. [2018-11-07 03:14:56,980 INFO L168 Benchmark]: TraceAbstraction took 206203.37 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.6 GB in the beginning and 2.8 GB in the end (delta: -1.2 GB). Peak memory consumption was 612.4 MB. Max. memory is 7.1 GB. [2018-11-07 03:14:56,986 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2310.42 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 203.5 MB). Peak memory consumption was 203.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 373.22 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 778.0 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 54.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 320.32 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 23.9 MB). Peak memory consumption was 23.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 10694.97 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.6 GB in the end (delta: 655.2 MB). Peak memory consumption was 655.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 206203.37 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.6 GB in the beginning and 2.8 GB in the end (delta: -1.2 GB). Peak memory consumption was 612.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 165]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 165). Cancelled while BasicCegarLoop was constructing difference of abstraction (37097states) and FLOYD_HOARE automaton (currently 9 states, 9 states before enhancement),while ReachableStatesComputation was computing reachable states (33839 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 205.9s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 189.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3664 SDtfs, 11716 SDslu, 975 SDs, 0 SdLazy, 27673 SolverSat, 6102 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 146.0s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 386 GetRequests, 353 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37097occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 6.5s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9972068277543781 AbsIntWeakeningRatio, 0.07780979827089338 AbsIntAvgWeakeningVarsNumRemoved, 1065.478386167147 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 2.8s AutomataMinimizationTime, 5 MinimizatonAttempts, 1036 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 1118 NumberOfCodeBlocks, 1118 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 1112 ConstructedInterpolants, 0 QuantifiedInterpolants, 684072 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 5 PerfectInterpolantSequences, 311/417 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown