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-LIM.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label44_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 21:24:40,003 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 21:24:40,006 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 21:24:40,022 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 21:24:40,022 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 21:24:40,023 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 21:24:40,025 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 21:24:40,026 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 21:24:40,028 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 21:24:40,029 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 21:24:40,030 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 21:24:40,030 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 21:24:40,031 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 21:24:40,032 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 21:24:40,033 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 21:24:40,034 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 21:24:40,035 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 21:24:40,036 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 21:24:40,038 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 21:24:40,040 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 21:24:40,041 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 21:24:40,044 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 21:24:40,049 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 21:24:40,049 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 21:24:40,049 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 21:24:40,050 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 21:24:40,051 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 21:24:40,052 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 21:24:40,053 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 21:24:40,054 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 21:24:40,054 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 21:24:40,054 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 21:24:40,055 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 21:24:40,055 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 21:24:40,056 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 21:24:40,056 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 21:24:40,057 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-LIM.epf [2018-11-07 21:24:40,071 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 21:24:40,071 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 21:24:40,072 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 21:24:40,072 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 21:24:40,072 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 21:24:40,073 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 21:24:40,073 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 21:24:40,073 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 21:24:40,073 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 21:24:40,073 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 21:24:40,074 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 21:24:40,074 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 21:24:40,074 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 21:24:40,075 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 21:24:40,075 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 21:24:40,075 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 21:24:40,075 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 21:24:40,075 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 21:24:40,076 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 21:24:40,076 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 21:24:40,076 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 21:24:40,076 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 21:24:40,076 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 21:24:40,077 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 21:24:40,077 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 21:24:40,077 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 21:24:40,077 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 21:24:40,077 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 21:24:40,078 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 21:24:40,078 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 21:24:40,078 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 21:24:40,078 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 21:24:40,078 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 21:24:40,079 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 21:24:40,079 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 21:24:40,125 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 21:24:40,141 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 21:24:40,144 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 21:24:40,146 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 21:24:40,146 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 21:24:40,147 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label44_true-unreach-call.c [2018-11-07 21:24:40,210 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b58746b9d/90333a75c71341299ad3ac58397b620a/FLAG496b6a91a [2018-11-07 21:24:41,064 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 21:24:41,065 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label44_true-unreach-call.c [2018-11-07 21:24:41,110 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b58746b9d/90333a75c71341299ad3ac58397b620a/FLAG496b6a91a [2018-11-07 21:24:41,130 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b58746b9d/90333a75c71341299ad3ac58397b620a [2018-11-07 21:24:41,143 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 21:24:41,145 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 21:24:41,146 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 21:24:41,146 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 21:24:41,152 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 21:24:41,153 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:24:41" (1/1) ... [2018-11-07 21:24:41,156 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5405f294 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:24:41, skipping insertion in model container [2018-11-07 21:24:41,156 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:24:41" (1/1) ... [2018-11-07 21:24:41,167 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 21:24:41,402 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 21:24:43,382 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 21:24:43,387 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 21:24:44,585 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 21:24:44,640 INFO L193 MainTranslator]: Completed translation [2018-11-07 21:24:44,640 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:24:44 WrapperNode [2018-11-07 21:24:44,640 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 21:24:44,641 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 21:24:44,642 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 21:24:44,642 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 21:24:44,652 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:24:44" (1/1) ... [2018-11-07 21:24:45,119 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:24:44" (1/1) ... [2018-11-07 21:24:45,130 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 21:24:45,130 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 21:24:45,130 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 21:24:45,130 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 21:24:45,139 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:24:44" (1/1) ... [2018-11-07 21:24:45,139 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:24:44" (1/1) ... [2018-11-07 21:24:45,167 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:24:44" (1/1) ... [2018-11-07 21:24:45,167 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:24:44" (1/1) ... [2018-11-07 21:24:45,367 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:24:44" (1/1) ... [2018-11-07 21:24:45,415 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:24:44" (1/1) ... [2018-11-07 21:24:45,502 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:24:44" (1/1) ... [2018-11-07 21:24:45,610 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 21:24:45,611 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 21:24:45,611 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 21:24:45,611 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 21:24:45,612 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:24:44" (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 21:24:45,681 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 21:24:45,682 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 21:24:45,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 21:24:45,682 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2018-11-07 21:24:45,682 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2018-11-07 21:24:45,682 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2018-11-07 21:24:45,683 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2018-11-07 21:24:45,683 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 21:24:45,683 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 21:24:45,683 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 21:24:45,683 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 21:24:45,683 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 21:24:45,684 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 21:24:45,684 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 21:24:45,684 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 21:24:45,684 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 21:24:45,684 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 21:24:45,685 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 21:24:45,685 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 21:25:01,540 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 21:25:01,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:25:01 BoogieIcfgContainer [2018-11-07 21:25:01,541 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 21:25:01,542 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 21:25:01,542 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 21:25:01,545 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 21:25:01,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 09:24:41" (1/3) ... [2018-11-07 21:25:01,546 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f44fc98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:25:01, skipping insertion in model container [2018-11-07 21:25:01,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:24:44" (2/3) ... [2018-11-07 21:25:01,547 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f44fc98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:25:01, skipping insertion in model container [2018-11-07 21:25:01,547 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:25:01" (3/3) ... [2018-11-07 21:25:01,549 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label44_true-unreach-call.c [2018-11-07 21:25:01,559 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 21:25:01,570 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 21:25:01,588 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 21:25:01,644 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 21:25:01,644 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 21:25:01,644 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 21:25:01,644 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 21:25:01,644 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 21:25:01,645 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 21:25:01,645 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 21:25:01,645 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 21:25:01,699 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states. [2018-11-07 21:25:01,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2018-11-07 21:25:01,708 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:25:01,709 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] [2018-11-07 21:25:01,712 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:25:01,718 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:25:01,719 INFO L82 PathProgramCache]: Analyzing trace with hash -6596318, now seen corresponding path program 1 times [2018-11-07 21:25:01,721 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:25:01,784 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:25:01,784 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:25:01,785 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:25:01,785 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:25:01,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:25:02,277 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 21:25:02,288 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 21:25:02,288 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 21:25:02,289 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:25:02,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 21:25:02,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 21:25:02,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 21:25:02,320 INFO L87 Difference]: Start difference. First operand 1778 states. Second operand 3 states. [2018-11-07 21:25:16,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:25:16,708 INFO L93 Difference]: Finished difference Result 4998 states and 9417 transitions. [2018-11-07 21:25:16,709 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 21:25:16,710 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 41 [2018-11-07 21:25:16,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:25:16,758 INFO L225 Difference]: With dead ends: 4998 [2018-11-07 21:25:16,759 INFO L226 Difference]: Without dead ends: 3218 [2018-11-07 21:25:16,775 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 21:25:16,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3218 states. [2018-11-07 21:25:16,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3218 to 3215. [2018-11-07 21:25:16,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3215 states. [2018-11-07 21:25:16,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3215 states to 3215 states and 5854 transitions. [2018-11-07 21:25:16,996 INFO L78 Accepts]: Start accepts. Automaton has 3215 states and 5854 transitions. Word has length 41 [2018-11-07 21:25:16,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:25:16,997 INFO L480 AbstractCegarLoop]: Abstraction has 3215 states and 5854 transitions. [2018-11-07 21:25:16,998 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 21:25:16,998 INFO L276 IsEmpty]: Start isEmpty. Operand 3215 states and 5854 transitions. [2018-11-07 21:25:17,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-11-07 21:25:17,005 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:25:17,005 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:25:17,005 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:25:17,006 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:25:17,006 INFO L82 PathProgramCache]: Analyzing trace with hash -337507924, now seen corresponding path program 1 times [2018-11-07 21:25:17,006 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:25:17,007 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:25:17,007 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:25:17,008 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:25:17,008 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:25:17,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:25:17,362 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 21:25:17,779 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 21:25:17,780 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 21:25:17,780 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 21:25:17,780 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:25:17,782 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 21:25:17,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 21:25:17,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 21:25:17,784 INFO L87 Difference]: Start difference. First operand 3215 states and 5854 transitions. Second operand 6 states. [2018-11-07 21:25:42,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:25:42,080 INFO L93 Difference]: Finished difference Result 9340 states and 16946 transitions. [2018-11-07 21:25:42,083 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 21:25:42,083 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 113 [2018-11-07 21:25:42,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:25:42,116 INFO L225 Difference]: With dead ends: 9340 [2018-11-07 21:25:42,116 INFO L226 Difference]: Without dead ends: 6131 [2018-11-07 21:25:42,128 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 21:25:42,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6131 states. [2018-11-07 21:25:42,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6131 to 6091. [2018-11-07 21:25:42,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6091 states. [2018-11-07 21:25:42,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6091 states to 6091 states and 9637 transitions. [2018-11-07 21:25:42,276 INFO L78 Accepts]: Start accepts. Automaton has 6091 states and 9637 transitions. Word has length 113 [2018-11-07 21:25:42,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:25:42,277 INFO L480 AbstractCegarLoop]: Abstraction has 6091 states and 9637 transitions. [2018-11-07 21:25:42,277 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 21:25:42,277 INFO L276 IsEmpty]: Start isEmpty. Operand 6091 states and 9637 transitions. [2018-11-07 21:25:42,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2018-11-07 21:25:42,286 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:25:42,286 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:25:42,286 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:25:42,286 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:25:42,287 INFO L82 PathProgramCache]: Analyzing trace with hash -392526345, now seen corresponding path program 1 times [2018-11-07 21:25:42,287 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:25:42,289 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:25:42,289 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:25:42,289 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:25:42,289 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:25:42,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:25:42,578 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 21:25:42,578 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 21:25:42,578 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 21:25:42,578 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:25:42,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 21:25:42,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 21:25:42,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 21:25:42,580 INFO L87 Difference]: Start difference. First operand 6091 states and 9637 transitions. Second operand 6 states. [2018-11-07 21:26:03,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:26:03,463 INFO L93 Difference]: Finished difference Result 21091 states and 34228 transitions. [2018-11-07 21:26:03,465 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 21:26:03,465 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 115 [2018-11-07 21:26:03,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:26:03,534 INFO L225 Difference]: With dead ends: 21091 [2018-11-07 21:26:03,534 INFO L226 Difference]: Without dead ends: 15006 [2018-11-07 21:26:03,564 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 21:26:03,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15006 states. [2018-11-07 21:26:03,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15006 to 14817. [2018-11-07 21:26:03,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14817 states. [2018-11-07 21:26:03,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14817 states to 14817 states and 22424 transitions. [2018-11-07 21:26:03,937 INFO L78 Accepts]: Start accepts. Automaton has 14817 states and 22424 transitions. Word has length 115 [2018-11-07 21:26:03,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:26:03,938 INFO L480 AbstractCegarLoop]: Abstraction has 14817 states and 22424 transitions. [2018-11-07 21:26:03,938 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 21:26:03,938 INFO L276 IsEmpty]: Start isEmpty. Operand 14817 states and 22424 transitions. [2018-11-07 21:26:03,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-11-07 21:26:03,944 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:26:03,944 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:26:03,944 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:26:03,945 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:26:03,945 INFO L82 PathProgramCache]: Analyzing trace with hash 2002482604, now seen corresponding path program 1 times [2018-11-07 21:26:03,945 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:26:03,946 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:26:03,946 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:26:03,946 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:26:03,947 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:26:03,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:26:04,292 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 21:26:04,292 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 21:26:04,292 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 21:26:04,292 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:26:04,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 21:26:04,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 21:26:04,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 21:26:04,294 INFO L87 Difference]: Start difference. First operand 14817 states and 22424 transitions. Second operand 5 states. [2018-11-07 21:26:20,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:26:20,417 INFO L93 Difference]: Finished difference Result 45159 states and 70155 transitions. [2018-11-07 21:26:20,420 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 21:26:20,420 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2018-11-07 21:26:20,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:26:20,514 INFO L225 Difference]: With dead ends: 45159 [2018-11-07 21:26:20,515 INFO L226 Difference]: Without dead ends: 30348 [2018-11-07 21:26:20,558 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-11-07 21:26:20,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30348 states. [2018-11-07 21:26:21,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30348 to 29949. [2018-11-07 21:26:21,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29949 states. [2018-11-07 21:26:21,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29949 states to 29949 states and 41233 transitions. [2018-11-07 21:26:21,262 INFO L78 Accepts]: Start accepts. Automaton has 29949 states and 41233 transitions. Word has length 146 [2018-11-07 21:26:21,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:26:21,263 INFO L480 AbstractCegarLoop]: Abstraction has 29949 states and 41233 transitions. [2018-11-07 21:26:21,263 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 21:26:21,263 INFO L276 IsEmpty]: Start isEmpty. Operand 29949 states and 41233 transitions. [2018-11-07 21:26:21,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-11-07 21:26:21,273 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:26:21,274 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 21:26:21,274 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:26:21,274 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:26:21,275 INFO L82 PathProgramCache]: Analyzing trace with hash -995199702, now seen corresponding path program 1 times [2018-11-07 21:26:21,275 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:26:21,276 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:26:21,276 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:26:21,277 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:26:21,277 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:26:21,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:26:21,583 WARN L179 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 21:26:21,977 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 68 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 21:26:21,978 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 21:26:21,978 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 21:26:21,979 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 213 with the following transitions: [2018-11-07 21:26:21,981 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], [5454], [5456], [5459], [5467], [5475], [5483], [5491], [5499], [5507], [5515], [5523], [5531], [5539], [5547], [5555], [5563], [5571], [5579], [5587], [5595], [5603], [5611], [5619], [5627], [5635], [5643], [5651], [5659], [5667], [5675], [5683], [5691], [5699], [5707], [5715], [5719], [5722], [5726], [5727], [5731], [5742], [5746], [5750], [5754], [5758], [5762], [5766], [5770], [5774], [5778], [5782], [5786], [5797], [5808], [5819], [5823], [5827], [5838], [5842], [5846], [5850], [5854], [5858], [5862], [5866], [5870], [5874], [5877], [6802], [6806], [6810], [6816], [6820], [6822], [6837], [6838], [6839], [6841], [6842] [2018-11-07 21:26:22,056 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 21:26:22,056 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 21:26:22,647 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 21:26:22,651 INFO L272 AbstractInterpreter]: Visited 104 different actions 104 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-11-07 21:26:22,689 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:26:22,690 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 21:26:23,237 INFO L227 lantSequenceWeakener]: Weakened 201 states. On average, predicates are now at 75.39% of their original sizes. [2018-11-07 21:26:23,237 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 21:26:23,595 INFO L415 sIntCurrentIteration]: We unified 211 AI predicates to 211 [2018-11-07 21:26:23,596 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 21:26:23,596 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 21:26:23,597 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-11-07 21:26:23,597 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:26:23,598 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 21:26:23,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 21:26:23,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 21:26:23,598 INFO L87 Difference]: Start difference. First operand 29949 states and 41233 transitions. Second operand 7 states. [2018-11-07 21:26:30,882 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-11-07 21:28:01,521 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 21:28:01,522 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 21:28:01,529 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 21:28:01,529 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 09:28:01 BoogieIcfgContainer [2018-11-07 21:28:01,529 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 21:28:01,530 INFO L168 Benchmark]: Toolchain (without parser) took 200386.56 ms. Allocated memory was 1.5 GB in the beginning and 5.5 GB in the end (delta: 4.0 GB). Free memory was 1.4 GB in the beginning and 3.3 GB in the end (delta: -1.9 GB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-11-07 21:28:01,532 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 21:28:01,532 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3494.99 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 997.0 MB in the end (delta: 391.1 MB). Peak memory consumption was 391.1 MB. Max. memory is 7.1 GB. [2018-11-07 21:28:01,533 INFO L168 Benchmark]: Boogie Procedure Inliner took 488.44 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 834.1 MB). Free memory was 997.0 MB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 109.4 MB. Max. memory is 7.1 GB. [2018-11-07 21:28:01,534 INFO L168 Benchmark]: Boogie Preprocessor took 480.35 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 52.6 MB). Peak memory consumption was 52.6 MB. Max. memory is 7.1 GB. [2018-11-07 21:28:01,535 INFO L168 Benchmark]: RCFGBuilder took 15930.03 ms. Allocated memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: 157.3 MB). Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 509.6 MB). Peak memory consumption was 666.9 MB. Max. memory is 7.1 GB. [2018-11-07 21:28:01,536 INFO L168 Benchmark]: TraceAbstraction took 179987.85 ms. Allocated memory was 2.5 GB in the beginning and 5.5 GB in the end (delta: 3.0 GB). Free memory was 1.7 GB in the beginning and 3.3 GB in the end (delta: -1.5 GB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-11-07 21:28:01,542 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 3494.99 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 997.0 MB in the end (delta: 391.1 MB). Peak memory consumption was 391.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 488.44 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 834.1 MB). Free memory was 997.0 MB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 109.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 480.35 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 52.6 MB). Peak memory consumption was 52.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 15930.03 ms. Allocated memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: 157.3 MB). Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 509.6 MB). Peak memory consumption was 666.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 179987.85 ms. Allocated memory was 2.5 GB in the beginning and 5.5 GB in the end (delta: 3.0 GB). Free memory was 1.7 GB in the beginning and 3.3 GB in the end (delta: -1.5 GB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 118]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 118). Cancelled while BasicCegarLoop was constructing difference of abstraction (29949states) and FLOYD_HOARE automaton (currently 7 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (50645 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 1778 locations, 1 error locations. TIMEOUT Result, 179.8s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 173.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4113 SDtfs, 23070 SDslu, 3823 SDs, 0 SdLazy, 45570 SolverSat, 9512 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 93.6s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 245 GetRequests, 215 SyntacticMatches, 4 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29949occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.7s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9977583375481585 AbsIntWeakeningRatio, 0.13270142180094788 AbsIntAvgWeakeningVarsNumRemoved, 19.09478672985782 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.4s AutomataMinimizationTime, 4 MinimizatonAttempts, 631 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 627 NumberOfCodeBlocks, 627 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 622 ConstructedInterpolants, 0 QuantifiedInterpolants, 301082 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 175/240 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown