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-INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label49_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 14:54:03,965 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 14:54:03,967 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 14:54:03,981 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 14:54:03,981 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 14:54:03,982 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 14:54:03,984 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 14:54:03,986 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 14:54:03,987 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 14:54:03,988 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 14:54:03,989 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 14:54:03,989 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 14:54:03,990 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 14:54:03,991 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 14:54:03,992 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 14:54:03,993 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 14:54:03,994 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 14:54:03,996 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 14:54:03,998 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 14:54:03,999 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 14:54:04,000 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 14:54:04,001 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 14:54:04,004 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 14:54:04,004 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 14:54:04,004 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 14:54:04,005 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 14:54:04,006 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 14:54:04,007 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 14:54:04,008 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 14:54:04,009 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 14:54:04,009 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 14:54:04,010 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 14:54:04,010 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 14:54:04,010 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 14:54:04,011 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 14:54:04,012 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 14:54:04,012 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-11-07 14:54:04,037 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 14:54:04,038 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 14:54:04,039 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 14:54:04,039 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 14:54:04,039 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 14:54:04,039 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 14:54:04,039 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 14:54:04,040 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 14:54:04,040 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 14:54:04,040 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 14:54:04,040 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 14:54:04,040 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 14:54:04,041 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 14:54:04,041 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 14:54:04,042 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 14:54:04,042 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 14:54:04,042 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 14:54:04,042 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 14:54:04,042 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 14:54:04,043 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 14:54:04,043 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 14:54:04,043 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 14:54:04,043 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 14:54:04,043 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 14:54:04,044 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 14:54:04,044 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 14:54:04,044 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 14:54:04,044 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 14:54:04,044 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 14:54:04,047 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 14:54:04,047 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 14:54:04,047 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 14:54:04,047 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 14:54:04,048 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 14:54:04,116 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 14:54:04,132 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 14:54:04,136 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 14:54:04,138 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 14:54:04,138 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 14:54:04,139 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label49_true-unreach-call.c [2018-11-07 14:54:04,203 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a85bfb76/716e0f11f5a24fffb8bf6bbfd5a680ca/FLAG736f61823 [2018-11-07 14:54:04,995 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 14:54:04,996 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label49_true-unreach-call.c [2018-11-07 14:54:05,041 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a85bfb76/716e0f11f5a24fffb8bf6bbfd5a680ca/FLAG736f61823 [2018-11-07 14:54:05,060 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a85bfb76/716e0f11f5a24fffb8bf6bbfd5a680ca [2018-11-07 14:54:05,072 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 14:54:05,075 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 14:54:05,076 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 14:54:05,076 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 14:54:05,081 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 14:54:05,082 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:54:05" (1/1) ... [2018-11-07 14:54:05,086 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@596e7265 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:54:05, skipping insertion in model container [2018-11-07 14:54:05,087 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:54:05" (1/1) ... [2018-11-07 14:54:05,099 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 14:54:05,284 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 14:54:06,867 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 14:54:06,874 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 14:54:07,559 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 14:54:07,594 INFO L193 MainTranslator]: Completed translation [2018-11-07 14:54:07,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:54:07 WrapperNode [2018-11-07 14:54:07,595 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 14:54:07,596 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 14:54:07,596 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 14:54:07,596 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 14:54:07,606 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:54:07" (1/1) ... [2018-11-07 14:54:08,131 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:54:07" (1/1) ... [2018-11-07 14:54:08,143 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 14:54:08,143 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 14:54:08,143 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 14:54:08,144 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 14:54:08,156 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:54:07" (1/1) ... [2018-11-07 14:54:08,156 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:54:07" (1/1) ... [2018-11-07 14:54:08,191 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:54:07" (1/1) ... [2018-11-07 14:54:08,191 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:54:07" (1/1) ... [2018-11-07 14:54:08,348 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:54:07" (1/1) ... [2018-11-07 14:54:08,390 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:54:07" (1/1) ... [2018-11-07 14:54:08,452 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:54:07" (1/1) ... [2018-11-07 14:54:08,512 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 14:54:08,513 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 14:54:08,513 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 14:54:08,513 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 14:54:08,514 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:54:07" (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 14:54:08,588 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 14:54:08,589 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 14:54:08,589 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 14:54:08,589 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 14:54:08,589 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 14:54:08,590 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 14:54:08,590 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 14:54:08,590 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 14:54:08,590 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 14:54:08,591 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 14:54:08,591 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 14:54:08,592 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 14:54:08,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 14:54:08,594 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 14:54:08,594 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 14:54:18,143 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 14:54:18,144 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:54:18 BoogieIcfgContainer [2018-11-07 14:54:18,144 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 14:54:18,145 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 14:54:18,145 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 14:54:18,149 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 14:54:18,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:54:05" (1/3) ... [2018-11-07 14:54:18,150 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65dba608 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:54:18, skipping insertion in model container [2018-11-07 14:54:18,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:54:07" (2/3) ... [2018-11-07 14:54:18,150 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65dba608 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:54:18, skipping insertion in model container [2018-11-07 14:54:18,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:54:18" (3/3) ... [2018-11-07 14:54:18,153 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label49_true-unreach-call.c [2018-11-07 14:54:18,163 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 14:54:18,175 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 14:54:18,190 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 14:54:18,237 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 14:54:18,237 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 14:54:18,238 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 14:54:18,238 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 14:54:18,238 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 14:54:18,238 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 14:54:18,238 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 14:54:18,238 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 14:54:18,281 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-11-07 14:54:18,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-11-07 14:54:18,291 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:54:18,292 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, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 14:54:18,294 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:54:18,300 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:54:18,301 INFO L82 PathProgramCache]: Analyzing trace with hash 1815238907, now seen corresponding path program 1 times [2018-11-07 14:54:18,304 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:54:18,356 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:54:18,356 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:54:18,356 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:54:18,356 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:54:18,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:54:18,832 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 14:54:18,834 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:54:18,835 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 14:54:18,835 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:54:18,841 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 14:54:18,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 14:54:18,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 14:54:18,861 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 4 states. [2018-11-07 14:54:31,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:54:31,849 INFO L93 Difference]: Finished difference Result 4063 states and 7611 transitions. [2018-11-07 14:54:31,850 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 14:54:31,851 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 65 [2018-11-07 14:54:31,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:54:31,911 INFO L225 Difference]: With dead ends: 4063 [2018-11-07 14:54:31,911 INFO L226 Difference]: Without dead ends: 2937 [2018-11-07 14:54:31,926 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 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 14:54:31,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2937 states. [2018-11-07 14:54:32,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2937 to 1982. [2018-11-07 14:54:32,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1982 states. [2018-11-07 14:54:32,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1982 states to 1982 states and 3456 transitions. [2018-11-07 14:54:32,126 INFO L78 Accepts]: Start accepts. Automaton has 1982 states and 3456 transitions. Word has length 65 [2018-11-07 14:54:32,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:54:32,127 INFO L480 AbstractCegarLoop]: Abstraction has 1982 states and 3456 transitions. [2018-11-07 14:54:32,127 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 14:54:32,127 INFO L276 IsEmpty]: Start isEmpty. Operand 1982 states and 3456 transitions. [2018-11-07 14:54:32,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2018-11-07 14:54:32,135 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:54:32,136 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, 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] [2018-11-07 14:54:32,136 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:54:32,136 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:54:32,137 INFO L82 PathProgramCache]: Analyzing trace with hash -617731529, now seen corresponding path program 1 times [2018-11-07 14:54:32,137 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:54:32,138 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:54:32,138 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:54:32,138 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:54:32,138 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:54:32,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:54:32,611 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:54:32,611 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:54:32,612 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 14:54:32,612 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:54:32,614 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 14:54:32,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 14:54:32,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 14:54:32,615 INFO L87 Difference]: Start difference. First operand 1982 states and 3456 transitions. Second operand 6 states. [2018-11-07 14:54:46,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:54:46,971 INFO L93 Difference]: Finished difference Result 7277 states and 13063 transitions. [2018-11-07 14:54:46,974 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 14:54:46,974 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 136 [2018-11-07 14:54:46,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:54:47,018 INFO L225 Difference]: With dead ends: 7277 [2018-11-07 14:54:47,019 INFO L226 Difference]: Without dead ends: 5301 [2018-11-07 14:54:47,031 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 14:54:47,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5301 states. [2018-11-07 14:54:47,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5301 to 5252. [2018-11-07 14:54:47,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5252 states. [2018-11-07 14:54:47,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5252 states to 5252 states and 8253 transitions. [2018-11-07 14:54:47,182 INFO L78 Accepts]: Start accepts. Automaton has 5252 states and 8253 transitions. Word has length 136 [2018-11-07 14:54:47,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:54:47,183 INFO L480 AbstractCegarLoop]: Abstraction has 5252 states and 8253 transitions. [2018-11-07 14:54:47,183 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 14:54:47,183 INFO L276 IsEmpty]: Start isEmpty. Operand 5252 states and 8253 transitions. [2018-11-07 14:54:47,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-11-07 14:54:47,195 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:54:47,196 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, 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] [2018-11-07 14:54:47,196 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:54:47,196 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:54:47,196 INFO L82 PathProgramCache]: Analyzing trace with hash -824137274, now seen corresponding path program 1 times [2018-11-07 14:54:47,197 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:54:47,198 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:54:47,198 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:54:47,199 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:54:47,199 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:54:47,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:54:47,457 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:54:47,457 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:54:47,458 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 14:54:47,458 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:54:47,458 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 14:54:47,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 14:54:47,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 14:54:47,459 INFO L87 Difference]: Start difference. First operand 5252 states and 8253 transitions. Second operand 6 states. [2018-11-07 14:54:58,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:54:58,165 INFO L93 Difference]: Finished difference Result 13914 states and 22498 transitions. [2018-11-07 14:54:58,166 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 14:54:58,166 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 139 [2018-11-07 14:54:58,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:54:58,209 INFO L225 Difference]: With dead ends: 13914 [2018-11-07 14:54:58,209 INFO L226 Difference]: Without dead ends: 8668 [2018-11-07 14:54:58,231 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 14:54:58,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8668 states. [2018-11-07 14:54:58,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8668 to 8605. [2018-11-07 14:54:58,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8605 states. [2018-11-07 14:54:58,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8605 states to 8605 states and 12803 transitions. [2018-11-07 14:54:58,426 INFO L78 Accepts]: Start accepts. Automaton has 8605 states and 12803 transitions. Word has length 139 [2018-11-07 14:54:58,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:54:58,427 INFO L480 AbstractCegarLoop]: Abstraction has 8605 states and 12803 transitions. [2018-11-07 14:54:58,427 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 14:54:58,427 INFO L276 IsEmpty]: Start isEmpty. Operand 8605 states and 12803 transitions. [2018-11-07 14:54:58,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-11-07 14:54:58,431 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:54:58,432 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, 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] [2018-11-07 14:54:58,432 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:54:58,432 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:54:58,432 INFO L82 PathProgramCache]: Analyzing trace with hash 2024947088, now seen corresponding path program 1 times [2018-11-07 14:54:58,432 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:54:58,433 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:54:58,433 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:54:58,434 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:54:58,434 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:54:58,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:54:58,930 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:54:58,930 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:54:58,930 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 14:54:58,931 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:54:58,931 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 14:54:58,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 14:54:58,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 14:54:58,932 INFO L87 Difference]: Start difference. First operand 8605 states and 12803 transitions. Second operand 6 states. [2018-11-07 14:55:10,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:55:10,583 INFO L93 Difference]: Finished difference Result 27252 states and 42305 transitions. [2018-11-07 14:55:10,584 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 14:55:10,584 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 170 [2018-11-07 14:55:10,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:55:10,677 INFO L225 Difference]: With dead ends: 27252 [2018-11-07 14:55:10,678 INFO L226 Difference]: Without dead ends: 18653 [2018-11-07 14:55:10,722 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 14:55:10,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18653 states. [2018-11-07 14:55:11,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18653 to 18564. [2018-11-07 14:55:11,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18564 states. [2018-11-07 14:55:11,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18564 states to 18564 states and 25945 transitions. [2018-11-07 14:55:11,177 INFO L78 Accepts]: Start accepts. Automaton has 18564 states and 25945 transitions. Word has length 170 [2018-11-07 14:55:11,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:55:11,178 INFO L480 AbstractCegarLoop]: Abstraction has 18564 states and 25945 transitions. [2018-11-07 14:55:11,178 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 14:55:11,178 INFO L276 IsEmpty]: Start isEmpty. Operand 18564 states and 25945 transitions. [2018-11-07 14:55:11,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2018-11-07 14:55:11,189 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:55:11,189 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, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 14:55:11,190 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:55:11,190 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:55:11,190 INFO L82 PathProgramCache]: Analyzing trace with hash -658364123, now seen corresponding path program 1 times [2018-11-07 14:55:11,190 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:55:11,191 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:55:11,191 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:55:11,192 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:55:11,192 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:55:11,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:55:11,555 WARN L179 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 14:55:11,969 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:55:11,969 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:55:11,969 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 14:55:11,969 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:55:11,970 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 14:55:11,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 14:55:11,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 14:55:11,971 INFO L87 Difference]: Start difference. First operand 18564 states and 25945 transitions. Second operand 6 states. [2018-11-07 14:55:20,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:55:20,591 INFO L93 Difference]: Finished difference Result 48015 states and 74441 transitions. [2018-11-07 14:55:20,591 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 14:55:20,591 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 233 [2018-11-07 14:55:20,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:55:20,723 INFO L225 Difference]: With dead ends: 48015 [2018-11-07 14:55:20,723 INFO L226 Difference]: Without dead ends: 29457 [2018-11-07 14:55:20,786 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 14:55:20,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29457 states. [2018-11-07 14:55:21,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29457 to 29303. [2018-11-07 14:55:21,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29303 states. [2018-11-07 14:55:21,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29303 states to 29303 states and 42010 transitions. [2018-11-07 14:55:21,647 INFO L78 Accepts]: Start accepts. Automaton has 29303 states and 42010 transitions. Word has length 233 [2018-11-07 14:55:21,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:55:21,648 INFO L480 AbstractCegarLoop]: Abstraction has 29303 states and 42010 transitions. [2018-11-07 14:55:21,648 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 14:55:21,648 INFO L276 IsEmpty]: Start isEmpty. Operand 29303 states and 42010 transitions. [2018-11-07 14:55:21,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2018-11-07 14:55:21,667 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:55:21,668 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:55:21,668 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:55:21,668 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:55:21,668 INFO L82 PathProgramCache]: Analyzing trace with hash -16938847, now seen corresponding path program 1 times [2018-11-07 14:55:21,669 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:55:21,669 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:55:21,672 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:55:21,672 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:55:21,672 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:55:21,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:55:22,015 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 116 proven. 71 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 14:55:22,016 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 14:55:22,016 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 14:55:22,018 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 247 with the following transitions: [2018-11-07 14:55:22,022 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2755], [2763], [2771], [2779], [2787], [2795], [2803], [2811], [2819], [2827], [2835], [2843], [2851], [2859], [2867], [2875], [2883], [2891], [2899], [2907], [2915], [2923], [2931], [2939], [2947], [2955], [2963], [2971], [2979], [2987], [2995], [3003], [3011], [3019], [3027], [3035], [3043], [3047], [3049], [3052], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3148], [3151], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3266], [3270], [3274], [3278], [3281], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-11-07 14:55:22,099 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 14:55:22,099 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 14:55:22,942 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 14:55:22,944 INFO L272 AbstractInterpreter]: Visited 110 different actions 110 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-11-07 14:55:22,998 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:55:22,998 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 14:55:24,139 INFO L227 lantSequenceWeakener]: Weakened 224 states. On average, predicates are now at 71.8% of their original sizes. [2018-11-07 14:55:24,139 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 14:55:25,023 INFO L415 sIntCurrentIteration]: We unified 245 AI predicates to 245 [2018-11-07 14:55:25,024 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 14:55:25,025 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 14:55:25,025 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [5] total 14 [2018-11-07 14:55:25,025 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:55:25,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-07 14:55:25,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-07 14:55:25,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-11-07 14:55:25,027 INFO L87 Difference]: Start difference. First operand 29303 states and 42010 transitions. Second operand 11 states. [2018-11-07 14:55:35,949 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-11-07 14:58:01,453 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-07 14:58:01,453 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 14:58:01,460 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 14:58:01,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 02:58:01 BoogieIcfgContainer [2018-11-07 14:58:01,460 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 14:58:01,461 INFO L168 Benchmark]: Toolchain (without parser) took 236387.85 ms. Allocated memory was 1.5 GB in the beginning and 4.3 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -701.1 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-11-07 14:58:01,463 INFO L168 Benchmark]: CDTParser took 0.20 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 14:58:01,463 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2519.27 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: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-11-07 14:58:01,464 INFO L168 Benchmark]: Boogie Procedure Inliner took 547.01 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 859.3 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 67.7 MB. Max. memory is 7.1 GB. [2018-11-07 14:58:01,465 INFO L168 Benchmark]: Boogie Preprocessor took 369.23 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 37.8 MB). Peak memory consumption was 37.8 MB. Max. memory is 7.1 GB. [2018-11-07 14:58:01,466 INFO L168 Benchmark]: RCFGBuilder took 9631.60 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 151.5 MB). Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 21.9 MB). Peak memory consumption was 688.7 MB. Max. memory is 7.1 GB. [2018-11-07 14:58:01,467 INFO L168 Benchmark]: TraceAbstraction took 223315.27 ms. Allocated memory was 2.6 GB in the beginning and 4.3 GB in the end (delta: 1.7 GB). Free memory was 2.3 GB in the beginning and 2.1 GB in the end (delta: 145.3 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-11-07 14:58:01,473 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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 2519.27 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: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 547.01 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 859.3 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 67.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 369.23 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 37.8 MB). Peak memory consumption was 37.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9631.60 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 151.5 MB). Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 21.9 MB). Peak memory consumption was 688.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 223315.27 ms. Allocated memory was 2.6 GB in the beginning and 4.3 GB in the end (delta: 1.7 GB). Free memory was 2.3 GB in the beginning and 2.1 GB in the end (delta: 145.3 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 186]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 186). Cancelled while BasicCegarLoop was constructing difference of abstraction (29303states) and FLOYD_HOARE automaton (currently 10 states, 11 states before enhancement),while ReachableStatesComputation was computing reachable states (4197 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 223.2s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 215.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2602 SDtfs, 20110 SDslu, 2815 SDs, 0 SdLazy, 30282 SolverSat, 9343 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 189.7s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 295 GetRequests, 248 SyntacticMatches, 4 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 2.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29303occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.9s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9978993573714073 AbsIntWeakeningRatio, 0.11020408163265306 AbsIntAvgWeakeningVarsNumRemoved, -0.3306122448979592 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.8s AutomataMinimizationTime, 5 MinimizatonAttempts, 1310 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 989 NumberOfCodeBlocks, 989 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 983 ConstructedInterpolants, 0 QuantifiedInterpolants, 671693 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 5 PerfectInterpolantSequences, 353/424 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown