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-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label16_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 09:46:23,024 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 09:46:23,027 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 09:46:23,043 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 09:46:23,044 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 09:46:23,046 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 09:46:23,047 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 09:46:23,050 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 09:46:23,052 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 09:46:23,055 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 09:46:23,056 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 09:46:23,057 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 09:46:23,058 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 09:46:23,060 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 09:46:23,061 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 09:46:23,062 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 09:46:23,063 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 09:46:23,068 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 09:46:23,070 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 09:46:23,073 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 09:46:23,076 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 09:46:23,078 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 09:46:23,081 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 09:46:23,082 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 09:46:23,082 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 09:46:23,083 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 09:46:23,084 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 09:46:23,086 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 09:46:23,087 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 09:46:23,088 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 09:46:23,088 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 09:46:23,089 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 09:46:23,089 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 09:46:23,089 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 09:46:23,092 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 09:46:23,092 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 09:46:23,093 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-11-07 09:46:23,118 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 09:46:23,118 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 09:46:23,119 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 09:46:23,120 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 09:46:23,120 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 09:46:23,120 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 09:46:23,120 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-07 09:46:23,120 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 09:46:23,121 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 09:46:23,121 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 09:46:23,121 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 09:46:23,121 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 09:46:23,122 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 09:46:23,122 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 09:46:23,123 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 09:46:23,123 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 09:46:23,123 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 09:46:23,123 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 09:46:23,123 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 09:46:23,124 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 09:46:23,124 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 09:46:23,124 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 09:46:23,124 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 09:46:23,124 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 09:46:23,126 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 09:46:23,126 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 09:46:23,127 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 09:46:23,127 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 09:46:23,127 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 09:46:23,127 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 09:46:23,127 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 09:46:23,128 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 09:46:23,128 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 09:46:23,128 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 09:46:23,128 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 09:46:23,128 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 09:46:23,199 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 09:46:23,214 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 09:46:23,219 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 09:46:23,220 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 09:46:23,221 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 09:46:23,222 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label16_true-unreach-call.c [2018-11-07 09:46:23,289 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a97ba290/e929ad1fdf8d407f8910e3a9dc7be81b/FLAGc73e95cd0 [2018-11-07 09:46:24,244 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 09:46:24,246 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label16_true-unreach-call.c [2018-11-07 09:46:24,295 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a97ba290/e929ad1fdf8d407f8910e3a9dc7be81b/FLAGc73e95cd0 [2018-11-07 09:46:24,313 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a97ba290/e929ad1fdf8d407f8910e3a9dc7be81b [2018-11-07 09:46:24,326 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 09:46:24,327 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 09:46:24,329 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 09:46:24,329 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 09:46:24,333 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 09:46:24,336 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:46:24" (1/1) ... [2018-11-07 09:46:24,340 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f260b0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:46:24, skipping insertion in model container [2018-11-07 09:46:24,340 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:46:24" (1/1) ... [2018-11-07 09:46:24,352 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 09:46:24,627 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 09:46:26,667 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 09:46:26,672 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 09:46:27,884 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 09:46:27,940 INFO L193 MainTranslator]: Completed translation [2018-11-07 09:46:27,941 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:46:27 WrapperNode [2018-11-07 09:46:27,941 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 09:46:27,942 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 09:46:27,942 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 09:46:27,943 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 09:46:27,952 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:46:27" (1/1) ... [2018-11-07 09:46:28,459 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:46:27" (1/1) ... [2018-11-07 09:46:28,480 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 09:46:28,480 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 09:46:28,480 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 09:46:28,480 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 09:46:28,490 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:46:27" (1/1) ... [2018-11-07 09:46:28,490 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:46:27" (1/1) ... [2018-11-07 09:46:28,536 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:46:27" (1/1) ... [2018-11-07 09:46:28,536 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:46:27" (1/1) ... [2018-11-07 09:46:28,690 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:46:27" (1/1) ... [2018-11-07 09:46:28,746 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:46:27" (1/1) ... [2018-11-07 09:46:28,793 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:46:27" (1/1) ... [2018-11-07 09:46:28,872 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 09:46:28,873 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 09:46:28,873 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 09:46:28,873 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 09:46:28,874 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:46:27" (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 09:46:28,943 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 09:46:28,944 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 09:46:28,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 09:46:28,944 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2018-11-07 09:46:28,944 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2018-11-07 09:46:28,944 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2018-11-07 09:46:28,944 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2018-11-07 09:46:28,945 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 09:46:28,945 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 09:46:28,945 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 09:46:28,946 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 09:46:28,946 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 09:46:28,946 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 09:46:28,948 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 09:46:28,948 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 09:46:28,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 09:46:28,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 09:46:28,948 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 09:46:28,949 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 09:46:43,074 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 09:46:43,074 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:46:43 BoogieIcfgContainer [2018-11-07 09:46:43,075 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 09:46:43,076 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 09:46:43,076 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 09:46:43,079 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 09:46:43,080 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 09:46:24" (1/3) ... [2018-11-07 09:46:43,080 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b01d052 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:46:43, skipping insertion in model container [2018-11-07 09:46:43,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:46:27" (2/3) ... [2018-11-07 09:46:43,081 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b01d052 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:46:43, skipping insertion in model container [2018-11-07 09:46:43,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:46:43" (3/3) ... [2018-11-07 09:46:43,083 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label16_true-unreach-call.c [2018-11-07 09:46:43,093 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 09:46:43,104 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 09:46:43,122 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 09:46:43,177 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 09:46:43,177 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 09:46:43,177 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 09:46:43,177 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 09:46:43,178 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 09:46:43,178 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 09:46:43,178 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 09:46:43,178 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 09:46:43,232 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states. [2018-11-07 09:46:43,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-11-07 09:46:43,242 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:46:43,244 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] [2018-11-07 09:46:43,246 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:46:43,252 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:46:43,253 INFO L82 PathProgramCache]: Analyzing trace with hash -370651844, now seen corresponding path program 1 times [2018-11-07 09:46:43,256 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:46:43,309 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:46:43,309 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:46:43,310 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:46:43,310 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:46:43,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:46:43,858 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 3 [2018-11-07 09:46:43,928 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 09:46:43,933 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:46:43,933 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 09:46:43,934 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:46:43,945 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 09:46:43,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 09:46:43,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 09:46:43,965 INFO L87 Difference]: Start difference. First operand 1778 states. Second operand 4 states. [2018-11-07 09:47:05,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:47:05,023 INFO L93 Difference]: Finished difference Result 6513 states and 12383 transitions. [2018-11-07 09:47:05,025 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 09:47:05,026 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2018-11-07 09:47:05,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:47:05,084 INFO L225 Difference]: With dead ends: 6513 [2018-11-07 09:47:05,085 INFO L226 Difference]: Without dead ends: 4729 [2018-11-07 09:47:05,098 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 09:47:05,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4729 states. [2018-11-07 09:47:05,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4729 to 4693. [2018-11-07 09:47:05,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4693 states. [2018-11-07 09:47:05,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4693 states to 4693 states and 7735 transitions. [2018-11-07 09:47:05,331 INFO L78 Accepts]: Start accepts. Automaton has 4693 states and 7735 transitions. Word has length 60 [2018-11-07 09:47:05,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:47:05,332 INFO L480 AbstractCegarLoop]: Abstraction has 4693 states and 7735 transitions. [2018-11-07 09:47:05,333 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 09:47:05,333 INFO L276 IsEmpty]: Start isEmpty. Operand 4693 states and 7735 transitions. [2018-11-07 09:47:05,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-11-07 09:47:05,341 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:47:05,342 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, 1, 1, 1, 1, 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 09:47:05,342 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:47:05,342 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:47:05,343 INFO L82 PathProgramCache]: Analyzing trace with hash 784651985, now seen corresponding path program 1 times [2018-11-07 09:47:05,343 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:47:05,344 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:47:05,344 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:47:05,344 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:47:05,344 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:47:05,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:47:05,688 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:47:05,688 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:47:05,688 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 09:47:05,689 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:47:05,691 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 09:47:05,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 09:47:05,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 09:47:05,691 INFO L87 Difference]: Start difference. First operand 4693 states and 7735 transitions. Second operand 6 states. [2018-11-07 09:47:27,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:47:27,388 INFO L93 Difference]: Finished difference Result 17886 states and 30173 transitions. [2018-11-07 09:47:27,391 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 09:47:27,391 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 132 [2018-11-07 09:47:27,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:47:27,456 INFO L225 Difference]: With dead ends: 17886 [2018-11-07 09:47:27,456 INFO L226 Difference]: Without dead ends: 13199 [2018-11-07 09:47:27,478 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 09:47:27,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13199 states. [2018-11-07 09:47:27,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13199 to 13130. [2018-11-07 09:47:27,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13130 states. [2018-11-07 09:47:27,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13130 states to 13130 states and 19368 transitions. [2018-11-07 09:47:27,782 INFO L78 Accepts]: Start accepts. Automaton has 13130 states and 19368 transitions. Word has length 132 [2018-11-07 09:47:27,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:47:27,783 INFO L480 AbstractCegarLoop]: Abstraction has 13130 states and 19368 transitions. [2018-11-07 09:47:27,783 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 09:47:27,783 INFO L276 IsEmpty]: Start isEmpty. Operand 13130 states and 19368 transitions. [2018-11-07 09:47:27,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2018-11-07 09:47:27,788 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:47:27,788 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:47:27,789 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:47:27,789 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:47:27,789 INFO L82 PathProgramCache]: Analyzing trace with hash -184474481, now seen corresponding path program 1 times [2018-11-07 09:47:27,789 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:47:27,790 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:47:27,790 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:47:27,791 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:47:27,791 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:47:27,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:47:28,163 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:47:28,164 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:47:28,164 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 09:47:28,164 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:47:28,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 09:47:28,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 09:47:28,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-07 09:47:28,165 INFO L87 Difference]: Start difference. First operand 13130 states and 19368 transitions. Second operand 6 states. [2018-11-07 09:47:42,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:47:42,784 INFO L93 Difference]: Finished difference Result 39926 states and 60287 transitions. [2018-11-07 09:47:42,786 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-07 09:47:42,786 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 142 [2018-11-07 09:47:42,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:47:42,880 INFO L225 Difference]: With dead ends: 39926 [2018-11-07 09:47:42,880 INFO L226 Difference]: Without dead ends: 26802 [2018-11-07 09:47:42,918 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 09:47:42,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26802 states. [2018-11-07 09:47:43,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26802 to 26541. [2018-11-07 09:47:43,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26541 states. [2018-11-07 09:47:43,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26541 states to 26541 states and 38641 transitions. [2018-11-07 09:47:43,453 INFO L78 Accepts]: Start accepts. Automaton has 26541 states and 38641 transitions. Word has length 142 [2018-11-07 09:47:43,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:47:43,454 INFO L480 AbstractCegarLoop]: Abstraction has 26541 states and 38641 transitions. [2018-11-07 09:47:43,454 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 09:47:43,454 INFO L276 IsEmpty]: Start isEmpty. Operand 26541 states and 38641 transitions. [2018-11-07 09:47:43,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2018-11-07 09:47:43,459 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:47:43,459 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:47:43,459 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:47:43,460 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:47:43,460 INFO L82 PathProgramCache]: Analyzing trace with hash 739388191, now seen corresponding path program 1 times [2018-11-07 09:47:43,460 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:47:43,464 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:47:43,465 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:47:43,465 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:47:43,465 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:47:43,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:47:43,786 WARN L179 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 09:47:43,868 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:47:43,869 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:47:43,869 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 09:47:43,869 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:47:43,870 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 09:47:43,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 09:47:43,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 09:47:43,871 INFO L87 Difference]: Start difference. First operand 26541 states and 38641 transitions. Second operand 6 states. [2018-11-07 09:48:02,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:48:02,153 INFO L93 Difference]: Finished difference Result 70545 states and 106719 transitions. [2018-11-07 09:48:02,154 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 09:48:02,154 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 175 [2018-11-07 09:48:02,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:48:02,264 INFO L225 Difference]: With dead ends: 70545 [2018-11-07 09:48:02,265 INFO L226 Difference]: Without dead ends: 44010 [2018-11-07 09:48:02,325 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 09:48:02,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44010 states. [2018-11-07 09:48:03,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44010 to 43859. [2018-11-07 09:48:03,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43859 states. [2018-11-07 09:48:03,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43859 states to 43859 states and 61102 transitions. [2018-11-07 09:48:03,144 INFO L78 Accepts]: Start accepts. Automaton has 43859 states and 61102 transitions. Word has length 175 [2018-11-07 09:48:03,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:48:03,144 INFO L480 AbstractCegarLoop]: Abstraction has 43859 states and 61102 transitions. [2018-11-07 09:48:03,144 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 09:48:03,145 INFO L276 IsEmpty]: Start isEmpty. Operand 43859 states and 61102 transitions. [2018-11-07 09:48:03,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2018-11-07 09:48:03,156 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:48:03,156 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:48:03,157 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:48:03,157 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:48:03,157 INFO L82 PathProgramCache]: Analyzing trace with hash 2050066253, now seen corresponding path program 1 times [2018-11-07 09:48:03,157 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:48:03,158 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:48:03,158 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:48:03,161 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:48:03,161 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:48:03,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:48:03,460 WARN L179 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 09:48:03,887 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 159 proven. 134 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2018-11-07 09:48:03,889 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:48:03,889 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:48:03,890 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 286 with the following transitions: [2018-11-07 09:48:03,897 INFO L202 CegarAbsIntRunner]: [0], [1], [5227], [5234], [5242], [5250], [5258], [5266], [5274], [5282], [5290], [5298], [5306], [5314], [5322], [5330], [5338], [5346], [5354], [5362], [5370], [5378], [5386], [5394], [5402], [5410], [5418], [5426], [5434], [5442], [5450], [5458], [5466], [5474], [5482], [5490], [5498], [5506], [5514], [5522], [5530], [5538], [5546], [5554], [5562], [5570], [5578], [5586], [5594], [5602], [5606], [5608], [5611], [5619], [5627], [5635], [5643], [5651], [5659], [5667], [5675], [5683], [5691], [5699], [5707], [5715], [5719], [5722], [5726], [5727], [5731], [5742], [5746], [5749], [5750], [5754], [5758], [5762], [5766], [5769], [6802], [6806], [6810], [6816], [6820], [6822], [6837], [6838], [6839], [6841], [6842] [2018-11-07 09:48:03,958 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:48:03,958 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:48:04,401 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 09:48:04,402 INFO L272 AbstractInterpreter]: Visited 85 different actions 85 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-11-07 09:48:04,452 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:48:04,452 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 09:48:05,114 INFO L227 lantSequenceWeakener]: Weakened 271 states. On average, predicates are now at 75.65% of their original sizes. [2018-11-07 09:48:05,115 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 09:48:05,345 INFO L415 sIntCurrentIteration]: We unified 284 AI predicates to 284 [2018-11-07 09:48:05,345 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 09:48:05,346 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 09:48:05,347 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2018-11-07 09:48:05,347 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:48:05,347 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 09:48:05,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 09:48:05,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 09:48:05,348 INFO L87 Difference]: Start difference. First operand 43859 states and 61102 transitions. Second operand 6 states. Received shutdown request... [2018-11-07 09:50:21,054 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 09:50:21,054 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 09:50:21,059 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 09:50:21,059 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 09:50:21 BoogieIcfgContainer [2018-11-07 09:50:21,059 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 09:50:21,060 INFO L168 Benchmark]: Toolchain (without parser) took 236734.01 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 3.0 GB in the end (delta: -1.6 GB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. [2018-11-07 09:50:21,062 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 09:50:21,062 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3613.20 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 392.7 MB). Peak memory consumption was 392.7 MB. Max. memory is 7.1 GB. [2018-11-07 09:50:21,063 INFO L168 Benchmark]: Boogie Procedure Inliner took 537.55 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 863.5 MB). Free memory was 1.0 GB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 98.9 MB. Max. memory is 7.1 GB. [2018-11-07 09:50:21,064 INFO L168 Benchmark]: Boogie Preprocessor took 392.39 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: 63.0 MB). Peak memory consumption was 63.0 MB. Max. memory is 7.1 GB. [2018-11-07 09:50:21,065 INFO L168 Benchmark]: RCFGBuilder took 14202.05 ms. Allocated memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: 140.0 MB). Free memory was 2.3 GB in the beginning and 1.7 GB in the end (delta: 537.3 MB). Peak memory consumption was 677.3 MB. Max. memory is 7.1 GB. [2018-11-07 09:50:21,066 INFO L168 Benchmark]: TraceAbstraction took 217983.83 ms. Allocated memory was 2.5 GB in the beginning and 4.2 GB in the end (delta: 1.7 GB). Free memory was 1.7 GB in the beginning and 3.0 GB in the end (delta: -1.3 GB). Peak memory consumption was 343.3 MB. Max. memory is 7.1 GB. [2018-11-07 09:50:21,071 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 3613.20 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 392.7 MB). Peak memory consumption was 392.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 537.55 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 863.5 MB). Free memory was 1.0 GB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 98.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 392.39 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: 63.0 MB). Peak memory consumption was 63.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 14202.05 ms. Allocated memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: 140.0 MB). Free memory was 2.3 GB in the beginning and 1.7 GB in the end (delta: 537.3 MB). Peak memory consumption was 677.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 217983.83 ms. Allocated memory was 2.5 GB in the beginning and 4.2 GB in the end (delta: 1.7 GB). Free memory was 1.7 GB in the beginning and 3.0 GB in the end (delta: -1.3 GB). Peak memory consumption was 343.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 175]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 175). Cancelled while BasicCegarLoop was constructing difference of abstraction (43859states) and FLOYD_HOARE automaton (currently 6 states, 6 states before enhancement),while ReachableStatesComputation was computing reachable states (22932 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 1778 locations, 1 error locations. TIMEOUT Result, 217.8s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 211.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3522 SDtfs, 26425 SDslu, 3395 SDs, 0 SdLazy, 43571 SolverSat, 9713 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 178.2s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 322 GetRequests, 291 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43859occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.5s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9977349273506653 AbsIntWeakeningRatio, 0.11971830985915492 AbsIntAvgWeakeningVarsNumRemoved, 17.200704225352112 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.8s AutomataMinimizationTime, 4 MinimizatonAttempts, 517 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 794 NumberOfCodeBlocks, 794 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 789 ConstructedInterpolants, 0 QuantifiedInterpolants, 486559 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 398/532 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown