java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label16_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 03:43:14,795 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 03:43:14,800 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 03:43:14,816 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 03:43:14,817 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 03:43:14,818 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 03:43:14,822 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 03:43:14,824 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 03:43:14,826 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 03:43:14,831 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 03:43:14,832 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 03:43:14,833 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 03:43:14,833 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 03:43:14,834 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 03:43:14,837 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 03:43:14,837 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 03:43:14,838 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 03:43:14,840 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 03:43:14,842 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 03:43:14,843 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 03:43:14,844 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 03:43:14,845 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 03:43:14,847 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 03:43:14,848 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 03:43:14,848 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 03:43:14,849 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 03:43:14,850 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 03:43:14,851 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 03:43:14,851 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 03:43:14,852 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 03:43:14,853 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 03:43:14,853 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 03:43:14,854 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 03:43:14,854 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 03:43:14,855 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 03:43:14,855 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 03:43:14,856 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-11-07 03:43:14,874 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 03:43:14,874 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 03:43:14,875 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 03:43:14,875 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 03:43:14,875 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 03:43:14,875 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 03:43:14,875 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 03:43:14,876 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 03:43:14,876 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 03:43:14,876 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 03:43:14,876 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 03:43:14,876 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 03:43:14,877 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 03:43:14,877 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 03:43:14,877 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 03:43:14,878 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 03:43:14,878 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 03:43:14,878 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 03:43:14,878 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 03:43:14,878 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 03:43:14,879 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 03:43:14,879 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 03:43:14,879 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 03:43:14,879 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 03:43:14,879 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 03:43:14,880 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 03:43:14,880 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 03:43:14,880 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 03:43:14,880 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 03:43:14,880 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 03:43:14,881 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 03:43:14,881 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 03:43:14,881 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 03:43:14,881 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 03:43:14,923 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 03:43:14,935 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 03:43:14,939 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 03:43:14,940 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 03:43:14,941 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 03:43:14,941 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label16_true-unreach-call.c [2018-11-07 03:43:14,993 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9099a7336/8677c05a20f045c593d751fbb5ac1acd/FLAGf01449d29 [2018-11-07 03:43:15,693 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 03:43:15,694 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label16_true-unreach-call.c [2018-11-07 03:43:15,715 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9099a7336/8677c05a20f045c593d751fbb5ac1acd/FLAGf01449d29 [2018-11-07 03:43:15,735 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9099a7336/8677c05a20f045c593d751fbb5ac1acd [2018-11-07 03:43:15,749 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 03:43:15,752 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 03:43:15,753 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 03:43:15,753 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 03:43:15,759 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 03:43:15,760 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:43:15" (1/1) ... [2018-11-07 03:43:15,763 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e98d58b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:43:15, skipping insertion in model container [2018-11-07 03:43:15,764 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:43:15" (1/1) ... [2018-11-07 03:43:15,777 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 03:43:15,878 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 03:43:16,594 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 03:43:16,601 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 03:43:16,853 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 03:43:16,876 INFO L193 MainTranslator]: Completed translation [2018-11-07 03:43:16,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:43:16 WrapperNode [2018-11-07 03:43:16,877 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 03:43:16,878 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 03:43:16,878 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 03:43:16,878 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 03:43:16,888 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:43:16" (1/1) ... [2018-11-07 03:43:17,075 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:43:16" (1/1) ... [2018-11-07 03:43:17,093 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 03:43:17,094 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 03:43:17,094 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 03:43:17,094 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 03:43:17,109 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:43:16" (1/1) ... [2018-11-07 03:43:17,110 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:43:16" (1/1) ... [2018-11-07 03:43:17,116 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:43:16" (1/1) ... [2018-11-07 03:43:17,117 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:43:16" (1/1) ... [2018-11-07 03:43:17,189 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:43:16" (1/1) ... [2018-11-07 03:43:17,214 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:43:16" (1/1) ... [2018-11-07 03:43:17,233 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:43:16" (1/1) ... [2018-11-07 03:43:17,250 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 03:43:17,250 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 03:43:17,251 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 03:43:17,251 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 03:43:17,252 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:43:16" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 03:43:17,315 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 03:43:17,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 03:43:17,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 03:43:17,315 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 03:43:17,316 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 03:43:17,316 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 03:43:17,316 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 03:43:17,316 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 03:43:17,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 03:43:17,317 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 03:43:17,317 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 03:43:23,537 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 03:43:23,537 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:43:23 BoogieIcfgContainer [2018-11-07 03:43:23,538 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 03:43:23,539 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 03:43:23,539 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 03:43:23,543 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 03:43:23,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 03:43:15" (1/3) ... [2018-11-07 03:43:23,544 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bbba28b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:43:23, skipping insertion in model container [2018-11-07 03:43:23,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:43:16" (2/3) ... [2018-11-07 03:43:23,545 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bbba28b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:43:23, skipping insertion in model container [2018-11-07 03:43:23,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:43:23" (3/3) ... [2018-11-07 03:43:23,547 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label16_true-unreach-call.c [2018-11-07 03:43:23,557 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 03:43:23,567 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 03:43:23,585 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 03:43:23,623 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 03:43:23,623 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 03:43:23,623 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 03:43:23,623 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 03:43:23,623 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 03:43:23,623 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 03:43:23,624 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 03:43:23,624 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 03:43:23,656 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-11-07 03:43:23,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-11-07 03:43:23,665 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:43:23,667 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] [2018-11-07 03:43:23,669 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:43:23,675 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:43:23,675 INFO L82 PathProgramCache]: Analyzing trace with hash 657368747, now seen corresponding path program 1 times [2018-11-07 03:43:23,678 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:43:23,729 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:43:23,729 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:43:23,730 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:43:23,730 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:43:23,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:43:24,138 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 03:43:24,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:43:24,290 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:43:24,290 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 03:43:24,290 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:43:24,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 03:43:24,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 03:43:24,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 03:43:24,325 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 3 states. [2018-11-07 03:43:27,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:43:27,425 INFO L93 Difference]: Finished difference Result 1156 states and 2144 transitions. [2018-11-07 03:43:27,426 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 03:43:27,428 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 49 [2018-11-07 03:43:27,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:43:27,453 INFO L225 Difference]: With dead ends: 1156 [2018-11-07 03:43:27,453 INFO L226 Difference]: Without dead ends: 744 [2018-11-07 03:43:27,462 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 03:43:27,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2018-11-07 03:43:27,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2018-11-07 03:43:27,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-11-07 03:43:27,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1317 transitions. [2018-11-07 03:43:27,575 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1317 transitions. Word has length 49 [2018-11-07 03:43:27,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:43:27,576 INFO L480 AbstractCegarLoop]: Abstraction has 744 states and 1317 transitions. [2018-11-07 03:43:27,576 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 03:43:27,576 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1317 transitions. [2018-11-07 03:43:27,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-11-07 03:43:27,584 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:43:27,584 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 03:43:27,585 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:43:27,585 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:43:27,585 INFO L82 PathProgramCache]: Analyzing trace with hash 591590536, now seen corresponding path program 1 times [2018-11-07 03:43:27,586 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:43:27,587 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:43:27,587 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:43:27,587 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:43:27,587 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:43:27,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:43:27,973 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:43:27,974 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:43:27,974 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 03:43:27,974 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:43:27,976 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 03:43:27,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 03:43:27,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-07 03:43:27,977 INFO L87 Difference]: Start difference. First operand 744 states and 1317 transitions. Second operand 6 states. [2018-11-07 03:43:38,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:43:38,945 INFO L93 Difference]: Finished difference Result 2960 states and 5501 transitions. [2018-11-07 03:43:38,946 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-07 03:43:38,946 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 125 [2018-11-07 03:43:38,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:43:38,971 INFO L225 Difference]: With dead ends: 2960 [2018-11-07 03:43:38,971 INFO L226 Difference]: Without dead ends: 2222 [2018-11-07 03:43:38,987 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-07 03:43:38,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2222 states. [2018-11-07 03:43:39,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2222 to 2174. [2018-11-07 03:43:39,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2174 states. [2018-11-07 03:43:39,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2174 states to 2174 states and 3683 transitions. [2018-11-07 03:43:39,093 INFO L78 Accepts]: Start accepts. Automaton has 2174 states and 3683 transitions. Word has length 125 [2018-11-07 03:43:39,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:43:39,096 INFO L480 AbstractCegarLoop]: Abstraction has 2174 states and 3683 transitions. [2018-11-07 03:43:39,096 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 03:43:39,096 INFO L276 IsEmpty]: Start isEmpty. Operand 2174 states and 3683 transitions. [2018-11-07 03:43:39,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-11-07 03:43:39,108 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:43:39,108 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 03:43:39,109 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:43:39,109 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:43:39,109 INFO L82 PathProgramCache]: Analyzing trace with hash 975106256, now seen corresponding path program 1 times [2018-11-07 03:43:39,109 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:43:39,112 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:43:39,112 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:43:39,112 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:43:39,112 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:43:39,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:43:39,616 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:43:39,617 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:43:39,617 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 03:43:39,617 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:43:39,618 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 03:43:39,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 03:43:39,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 03:43:39,619 INFO L87 Difference]: Start difference. First operand 2174 states and 3683 transitions. Second operand 6 states. [2018-11-07 03:43:44,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:43:44,788 INFO L93 Difference]: Finished difference Result 8056 states and 14415 transitions. [2018-11-07 03:43:44,789 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 03:43:44,790 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 129 [2018-11-07 03:43:44,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:43:44,835 INFO L225 Difference]: With dead ends: 8056 [2018-11-07 03:43:44,836 INFO L226 Difference]: Without dead ends: 5888 [2018-11-07 03:43:44,871 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 03:43:44,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5888 states. [2018-11-07 03:43:45,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5888 to 5825. [2018-11-07 03:43:45,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5825 states. [2018-11-07 03:43:45,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5825 states to 5825 states and 8990 transitions. [2018-11-07 03:43:45,072 INFO L78 Accepts]: Start accepts. Automaton has 5825 states and 8990 transitions. Word has length 129 [2018-11-07 03:43:45,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:43:45,073 INFO L480 AbstractCegarLoop]: Abstraction has 5825 states and 8990 transitions. [2018-11-07 03:43:45,073 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 03:43:45,073 INFO L276 IsEmpty]: Start isEmpty. Operand 5825 states and 8990 transitions. [2018-11-07 03:43:45,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-11-07 03:43:45,077 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:43:45,077 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 03:43:45,077 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:43:45,078 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:43:45,078 INFO L82 PathProgramCache]: Analyzing trace with hash -834708748, now seen corresponding path program 1 times [2018-11-07 03:43:45,078 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:43:45,079 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:43:45,079 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:43:45,080 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:43:45,080 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:43:45,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:43:45,310 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:43:45,310 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:43:45,311 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 03:43:45,311 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:43:45,311 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 03:43:45,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 03:43:45,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 03:43:45,312 INFO L87 Difference]: Start difference. First operand 5825 states and 8990 transitions. Second operand 6 states. [2018-11-07 03:43:49,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:43:49,483 INFO L93 Difference]: Finished difference Result 13811 states and 22555 transitions. [2018-11-07 03:43:49,487 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 03:43:49,487 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 131 [2018-11-07 03:43:49,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:43:49,538 INFO L225 Difference]: With dead ends: 13811 [2018-11-07 03:43:49,538 INFO L226 Difference]: Without dead ends: 7992 [2018-11-07 03:43:49,577 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 03:43:49,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7992 states. [2018-11-07 03:43:49,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7992 to 7914. [2018-11-07 03:43:49,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7914 states. [2018-11-07 03:43:49,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7914 states to 7914 states and 11631 transitions. [2018-11-07 03:43:49,790 INFO L78 Accepts]: Start accepts. Automaton has 7914 states and 11631 transitions. Word has length 131 [2018-11-07 03:43:49,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:43:49,791 INFO L480 AbstractCegarLoop]: Abstraction has 7914 states and 11631 transitions. [2018-11-07 03:43:49,791 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 03:43:49,791 INFO L276 IsEmpty]: Start isEmpty. Operand 7914 states and 11631 transitions. [2018-11-07 03:43:49,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-11-07 03:43:49,796 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:43:49,796 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 03:43:49,797 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:43:49,797 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:43:49,797 INFO L82 PathProgramCache]: Analyzing trace with hash 845250593, now seen corresponding path program 1 times [2018-11-07 03:43:49,797 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:43:49,798 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:43:49,798 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:43:49,798 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:43:49,799 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:43:49,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:43:50,060 WARN L179 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 03:43:50,427 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:43:50,428 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:43:50,428 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 03:43:50,428 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:43:50,428 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 03:43:50,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 03:43:50,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 03:43:50,429 INFO L87 Difference]: Start difference. First operand 7914 states and 11631 transitions. Second operand 6 states. [2018-11-07 03:43:53,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:43:53,714 INFO L93 Difference]: Finished difference Result 19303 states and 30706 transitions. [2018-11-07 03:43:53,719 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 03:43:53,719 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 134 [2018-11-07 03:43:53,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:43:53,804 INFO L225 Difference]: With dead ends: 19303 [2018-11-07 03:43:53,808 INFO L226 Difference]: Without dead ends: 11395 [2018-11-07 03:43:53,846 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 03:43:53,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11395 states. [2018-11-07 03:43:54,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11395 to 11330. [2018-11-07 03:43:54,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11330 states. [2018-11-07 03:43:54,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11330 states to 11330 states and 16228 transitions. [2018-11-07 03:43:54,147 INFO L78 Accepts]: Start accepts. Automaton has 11330 states and 16228 transitions. Word has length 134 [2018-11-07 03:43:54,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:43:54,147 INFO L480 AbstractCegarLoop]: Abstraction has 11330 states and 16228 transitions. [2018-11-07 03:43:54,147 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 03:43:54,148 INFO L276 IsEmpty]: Start isEmpty. Operand 11330 states and 16228 transitions. [2018-11-07 03:43:54,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-11-07 03:43:54,151 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:43:54,151 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 03:43:54,151 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:43:54,151 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:43:54,152 INFO L82 PathProgramCache]: Analyzing trace with hash 1926747012, now seen corresponding path program 1 times [2018-11-07 03:43:54,152 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:43:54,152 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:43:54,153 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:43:54,153 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:43:54,153 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:43:54,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:43:54,417 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 03:43:54,807 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:43:54,808 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:43:54,808 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 03:43:54,808 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:43:54,809 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 03:43:54,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 03:43:54,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 03:43:54,809 INFO L87 Difference]: Start difference. First operand 11330 states and 16228 transitions. Second operand 6 states. [2018-11-07 03:43:58,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:43:58,215 INFO L93 Difference]: Finished difference Result 24439 states and 35718 transitions. [2018-11-07 03:43:58,219 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 03:43:58,219 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 139 [2018-11-07 03:43:58,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:43:58,272 INFO L225 Difference]: With dead ends: 24439 [2018-11-07 03:43:58,272 INFO L226 Difference]: Without dead ends: 13115 [2018-11-07 03:43:58,305 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 03:43:58,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13115 states. [2018-11-07 03:43:58,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13115 to 13089. [2018-11-07 03:43:58,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13089 states. [2018-11-07 03:43:58,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13089 states to 13089 states and 17349 transitions. [2018-11-07 03:43:58,578 INFO L78 Accepts]: Start accepts. Automaton has 13089 states and 17349 transitions. Word has length 139 [2018-11-07 03:43:58,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:43:58,579 INFO L480 AbstractCegarLoop]: Abstraction has 13089 states and 17349 transitions. [2018-11-07 03:43:58,579 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 03:43:58,579 INFO L276 IsEmpty]: Start isEmpty. Operand 13089 states and 17349 transitions. [2018-11-07 03:43:58,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-11-07 03:43:58,582 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:43:58,583 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 03:43:58,583 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:43:58,583 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:43:58,583 INFO L82 PathProgramCache]: Analyzing trace with hash 520725928, now seen corresponding path program 1 times [2018-11-07 03:43:58,583 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:43:58,584 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:43:58,584 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:43:58,585 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:43:58,587 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:43:58,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:43:58,816 WARN L179 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 03:43:58,929 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-07 03:43:58,929 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 03:43:58,929 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 03:43:58,930 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 142 with the following transitions: [2018-11-07 03:43:58,932 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [471], [473], [476], [484], [492], [500], [508], [516], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [760], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-07 03:43:58,997 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 03:43:58,998 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 03:44:00,844 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 03:44:09,722 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 03:44:09,723 INFO L272 AbstractInterpreter]: Visited 99 different actions 377 times. Merged at 5 different actions 14 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 03:44:09,738 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:44:09,738 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 03:44:12,255 INFO L227 lantSequenceWeakener]: Weakened 17 states. On average, predicates are now at 82.89% of their original sizes. [2018-11-07 03:44:12,256 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 03:44:58,624 INFO L415 sIntCurrentIteration]: We unified 140 AI predicates to 140 [2018-11-07 03:44:58,624 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 03:44:58,625 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 03:44:58,625 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [4] total 16 [2018-11-07 03:44:58,626 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:44:58,626 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-11-07 03:44:58,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-11-07 03:44:58,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2018-11-07 03:44:58,627 INFO L87 Difference]: Start difference. First operand 13089 states and 17349 transitions. Second operand 14 states. Received shutdown request... [2018-11-07 03:47:13,545 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-07 03:47:13,545 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 03:47:13,550 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 03:47:13,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 03:47:13 BoogieIcfgContainer [2018-11-07 03:47:13,551 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 03:47:13,551 INFO L168 Benchmark]: Toolchain (without parser) took 237800.96 ms. Allocated memory was 1.5 GB in the beginning and 4.3 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 1.7 GB in the end (delta: -279.7 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2018-11-07 03:47:13,553 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 03:47:13,553 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1124.07 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2018-11-07 03:47:13,554 INFO L168 Benchmark]: Boogie Procedure Inliner took 215.93 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 764.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -900.2 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. [2018-11-07 03:47:13,555 INFO L168 Benchmark]: Boogie Preprocessor took 156.15 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 03:47:13,556 INFO L168 Benchmark]: RCFGBuilder took 6287.40 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 268.2 MB). Peak memory consumption was 268.2 MB. Max. memory is 7.1 GB. [2018-11-07 03:47:13,556 INFO L168 Benchmark]: TraceAbstraction took 230011.97 ms. Allocated memory was 2.3 GB in the beginning and 4.3 GB in the end (delta: 2.0 GB). Free memory was 2.0 GB in the beginning and 1.7 GB in the end (delta: 267.8 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-11-07 03:47:13,561 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 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 1124.07 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 215.93 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 764.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -900.2 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 156.15 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 6287.40 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 268.2 MB). Peak memory consumption was 268.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 230011.97 ms. Allocated memory was 2.3 GB in the beginning and 4.3 GB in the end (delta: 2.0 GB). Free memory was 2.0 GB in the beginning and 1.7 GB in the end (delta: 267.8 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 133]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 133). Cancelled while BasicCegarLoop was constructing difference of abstraction (13089states) and FLOYD_HOARE automaton (currently 17 states, 14 states before enhancement),while ReachableStatesComputation was computing reachable states (3326 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 410 locations, 1 error locations. TIMEOUT Result, 229.9s OverallTime, 7 OverallIterations, 2 TraceHistogramMax, 165.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 716 SDtfs, 11913 SDslu, 717 SDs, 0 SdLazy, 14898 SolverSat, 4015 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 74.0s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 203 GetRequests, 78 SyntacticMatches, 69 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 50.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13089occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 10.8s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9934006211180127 AbsIntWeakeningRatio, 0.14285714285714285 AbsIntAvgWeakeningVarsNumRemoved, 30.22142857142857 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 280 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 848 NumberOfCodeBlocks, 848 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 841 ConstructedInterpolants, 0 QuantifiedInterpolants, 429638 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 6 PerfectInterpolantSequences, 214/252 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown