java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-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_label32_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 21:59:26,738 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 21:59:26,740 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 21:59:26,754 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 21:59:26,754 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 21:59:26,756 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 21:59:26,758 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 21:59:26,761 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 21:59:26,763 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 21:59:26,766 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 21:59:26,767 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 21:59:26,767 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 21:59:26,768 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 21:59:26,771 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 21:59:26,775 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 21:59:26,776 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 21:59:26,777 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 21:59:26,787 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 21:59:26,792 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 21:59:26,794 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 21:59:26,795 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 21:59:26,799 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 21:59:26,804 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 21:59:26,804 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 21:59:26,805 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 21:59:26,808 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 21:59:26,811 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 21:59:26,812 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 21:59:26,813 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 21:59:26,816 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 21:59:26,816 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 21:59:26,817 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 21:59:26,817 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 21:59:26,817 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 21:59:26,818 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 21:59:26,821 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 21:59:26,821 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 21:59:26,846 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 21:59:26,846 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 21:59:26,848 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 21:59:26,848 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 21:59:26,848 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 21:59:26,849 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 21:59:26,849 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 21:59:26,849 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 21:59:26,849 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 21:59:26,849 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 21:59:26,850 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 21:59:26,850 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 21:59:26,851 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 21:59:26,851 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 21:59:26,851 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 21:59:26,852 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 21:59:26,853 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 21:59:26,853 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 21:59:26,853 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 21:59:26,853 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 21:59:26,853 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 21:59:26,854 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 21:59:26,854 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 21:59:26,854 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 21:59:26,854 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 21:59:26,855 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 21:59:26,856 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 21:59:26,856 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 21:59:26,856 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 21:59:26,857 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 21:59:26,857 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 21:59:26,857 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 21:59:26,857 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 21:59:26,857 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 21:59:26,926 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 21:59:26,941 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 21:59:26,946 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 21:59:26,947 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 21:59:26,948 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 21:59:26,949 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label32_true-unreach-call.c [2018-10-24 21:59:27,014 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/8ae1cfbbf/282bd6912004413394147f0113a64b6d/FLAG0027a0865 [2018-10-24 21:59:27,659 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 21:59:27,660 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label32_true-unreach-call.c [2018-10-24 21:59:27,680 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/8ae1cfbbf/282bd6912004413394147f0113a64b6d/FLAG0027a0865 [2018-10-24 21:59:27,695 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/8ae1cfbbf/282bd6912004413394147f0113a64b6d [2018-10-24 21:59:27,706 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 21:59:27,708 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 21:59:27,709 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 21:59:27,709 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 21:59:27,713 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 21:59:27,714 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:59:27" (1/1) ... [2018-10-24 21:59:27,717 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1aea84ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:59:27, skipping insertion in model container [2018-10-24 21:59:27,717 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:59:27" (1/1) ... [2018-10-24 21:59:27,727 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 21:59:27,813 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 21:59:28,530 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:59:28,535 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 21:59:28,792 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:59:28,816 INFO L193 MainTranslator]: Completed translation [2018-10-24 21:59:28,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:59:28 WrapperNode [2018-10-24 21:59:28,817 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 21:59:28,818 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 21:59:28,818 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 21:59:28,819 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 21:59:28,830 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:59:28" (1/1) ... [2018-10-24 21:59:28,873 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:59:28" (1/1) ... [2018-10-24 21:59:29,178 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 21:59:29,178 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 21:59:29,179 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 21:59:29,179 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 21:59:29,189 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:59:28" (1/1) ... [2018-10-24 21:59:29,189 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:59:28" (1/1) ... [2018-10-24 21:59:29,199 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:59:28" (1/1) ... [2018-10-24 21:59:29,200 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:59:28" (1/1) ... [2018-10-24 21:59:29,287 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:59:28" (1/1) ... [2018-10-24 21:59:29,317 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:59:28" (1/1) ... [2018-10-24 21:59:29,352 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:59:28" (1/1) ... [2018-10-24 21:59:29,382 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 21:59:29,383 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 21:59:29,383 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 21:59:29,383 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 21:59:29,384 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:59:28" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-24 21:59:29,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 21:59:29,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 21:59:29,459 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 21:59:29,459 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 21:59:29,459 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 21:59:29,459 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 21:59:29,460 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 21:59:29,460 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 21:59:29,460 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 21:59:29,460 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 21:59:36,505 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 21:59:36,506 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:59:36 BoogieIcfgContainer [2018-10-24 21:59:36,506 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 21:59:36,508 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 21:59:36,508 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 21:59:36,514 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 21:59:36,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:59:27" (1/3) ... [2018-10-24 21:59:36,515 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fa38b52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:59:36, skipping insertion in model container [2018-10-24 21:59:36,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:59:28" (2/3) ... [2018-10-24 21:59:36,516 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fa38b52 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:59:36, skipping insertion in model container [2018-10-24 21:59:36,516 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:59:36" (3/3) ... [2018-10-24 21:59:36,518 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label32_true-unreach-call.c [2018-10-24 21:59:36,529 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 21:59:36,545 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 21:59:36,564 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 21:59:36,608 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 21:59:36,608 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 21:59:36,608 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 21:59:36,608 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 21:59:36,609 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 21:59:36,609 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 21:59:36,609 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 21:59:36,609 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 21:59:36,645 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-10-24 21:59:36,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-10-24 21:59:36,655 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:59:36,656 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:59:36,658 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:59:36,664 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:59:36,664 INFO L82 PathProgramCache]: Analyzing trace with hash 1067994659, now seen corresponding path program 1 times [2018-10-24 21:59:36,666 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:59:36,713 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:59:36,713 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:59:36,714 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:59:36,714 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:59:36,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:59:37,153 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 21:59:37,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:59:37,268 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:59:37,269 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 21:59:37,269 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:59:37,276 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 21:59:37,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 21:59:37,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 21:59:37,297 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 3 states. [2018-10-24 21:59:41,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:59:41,598 INFO L93 Difference]: Finished difference Result 1156 states and 2144 transitions. [2018-10-24 21:59:41,599 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 21:59:41,601 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 55 [2018-10-24 21:59:41,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:59:41,626 INFO L225 Difference]: With dead ends: 1156 [2018-10-24 21:59:41,627 INFO L226 Difference]: Without dead ends: 744 [2018-10-24 21:59:41,638 INFO L605 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 [2018-10-24 21:59:41,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2018-10-24 21:59:41,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2018-10-24 21:59:41,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-10-24 21:59:41,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1355 transitions. [2018-10-24 21:59:41,749 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1355 transitions. Word has length 55 [2018-10-24 21:59:41,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:59:41,750 INFO L481 AbstractCegarLoop]: Abstraction has 744 states and 1355 transitions. [2018-10-24 21:59:41,750 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 21:59:41,750 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1355 transitions. [2018-10-24 21:59:41,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-10-24 21:59:41,761 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:59:41,761 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:59:41,762 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:59:41,764 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:59:41,764 INFO L82 PathProgramCache]: Analyzing trace with hash 1474010228, now seen corresponding path program 1 times [2018-10-24 21:59:41,764 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:59:41,766 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:59:41,767 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:59:41,768 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:59:41,768 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:59:41,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:59:42,123 WARN L179 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 21:59:42,236 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:59:42,237 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:59:42,237 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 21:59:42,237 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:59:42,241 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 21:59:42,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 21:59:42,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 21:59:42,242 INFO L87 Difference]: Start difference. First operand 744 states and 1355 transitions. Second operand 5 states. [2018-10-24 21:59:48,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:59:48,804 INFO L93 Difference]: Finished difference Result 2194 states and 4083 transitions. [2018-10-24 21:59:48,806 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:59:48,806 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 125 [2018-10-24 21:59:48,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:59:48,820 INFO L225 Difference]: With dead ends: 2194 [2018-10-24 21:59:48,821 INFO L226 Difference]: Without dead ends: 1456 [2018-10-24 21:59:48,825 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 21:59:48,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1456 states. [2018-10-24 21:59:48,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1456 to 1436. [2018-10-24 21:59:48,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1436 states. [2018-10-24 21:59:48,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1436 states to 1436 states and 2550 transitions. [2018-10-24 21:59:48,897 INFO L78 Accepts]: Start accepts. Automaton has 1436 states and 2550 transitions. Word has length 125 [2018-10-24 21:59:48,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:59:48,897 INFO L481 AbstractCegarLoop]: Abstraction has 1436 states and 2550 transitions. [2018-10-24 21:59:48,898 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 21:59:48,898 INFO L276 IsEmpty]: Start isEmpty. Operand 1436 states and 2550 transitions. [2018-10-24 21:59:48,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2018-10-24 21:59:48,902 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:59:48,903 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:59:48,903 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:59:48,903 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:59:48,903 INFO L82 PathProgramCache]: Analyzing trace with hash -1726683851, now seen corresponding path program 1 times [2018-10-24 21:59:48,904 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:59:48,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:59:48,905 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:59:48,905 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:59:48,905 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:59:48,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:59:49,147 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:59:49,148 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:59:49,148 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 21:59:49,148 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:59:49,149 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 21:59:49,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 21:59:49,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:59:49,153 INFO L87 Difference]: Start difference. First operand 1436 states and 2550 transitions. Second operand 6 states. [2018-10-24 21:59:55,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:59:55,164 INFO L93 Difference]: Finished difference Result 3936 states and 7024 transitions. [2018-10-24 21:59:55,165 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:59:55,165 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 154 [2018-10-24 21:59:55,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:59:55,181 INFO L225 Difference]: With dead ends: 3936 [2018-10-24 21:59:55,181 INFO L226 Difference]: Without dead ends: 2506 [2018-10-24 21:59:55,190 INFO L605 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 [2018-10-24 21:59:55,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2506 states. [2018-10-24 21:59:55,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2506 to 2479. [2018-10-24 21:59:55,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2479 states. [2018-10-24 21:59:55,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2479 states to 2479 states and 3996 transitions. [2018-10-24 21:59:55,282 INFO L78 Accepts]: Start accepts. Automaton has 2479 states and 3996 transitions. Word has length 154 [2018-10-24 21:59:55,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:59:55,282 INFO L481 AbstractCegarLoop]: Abstraction has 2479 states and 3996 transitions. [2018-10-24 21:59:55,283 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 21:59:55,283 INFO L276 IsEmpty]: Start isEmpty. Operand 2479 states and 3996 transitions. [2018-10-24 21:59:55,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-10-24 21:59:55,288 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:59:55,288 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:59:55,290 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:59:55,290 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:59:55,290 INFO L82 PathProgramCache]: Analyzing trace with hash 1509581241, now seen corresponding path program 1 times [2018-10-24 21:59:55,291 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:59:55,291 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:59:55,292 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:59:55,292 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:59:55,292 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:59:55,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:59:55,613 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:59:55,613 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:59:55,613 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 21:59:55,613 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:59:55,614 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 21:59:55,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 21:59:55,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:59:55,615 INFO L87 Difference]: Start difference. First operand 2479 states and 3996 transitions. Second operand 6 states. [2018-10-24 21:59:59,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:59:59,556 INFO L93 Difference]: Finished difference Result 6050 states and 9896 transitions. [2018-10-24 21:59:59,556 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:59:59,556 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 172 [2018-10-24 21:59:59,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:59:59,579 INFO L225 Difference]: With dead ends: 6050 [2018-10-24 21:59:59,580 INFO L226 Difference]: Without dead ends: 3577 [2018-10-24 21:59:59,590 INFO L605 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 [2018-10-24 21:59:59,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3577 states. [2018-10-24 21:59:59,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3577 to 3545. [2018-10-24 21:59:59,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3545 states. [2018-10-24 21:59:59,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3545 states to 3545 states and 4965 transitions. [2018-10-24 21:59:59,688 INFO L78 Accepts]: Start accepts. Automaton has 3545 states and 4965 transitions. Word has length 172 [2018-10-24 21:59:59,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:59:59,689 INFO L481 AbstractCegarLoop]: Abstraction has 3545 states and 4965 transitions. [2018-10-24 21:59:59,689 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 21:59:59,689 INFO L276 IsEmpty]: Start isEmpty. Operand 3545 states and 4965 transitions. [2018-10-24 21:59:59,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2018-10-24 21:59:59,693 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:59:59,693 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-24 21:59:59,694 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:59:59,694 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:59:59,694 INFO L82 PathProgramCache]: Analyzing trace with hash -2114046403, now seen corresponding path program 1 times [2018-10-24 21:59:59,694 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:59:59,695 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:59:59,695 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:59:59,695 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:59:59,696 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:59:59,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:59:59,928 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 115 proven. 46 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 21:59:59,929 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:59:59,929 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:59:59,930 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 256 with the following transitions: [2018-10-24 21:59:59,932 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], [475], [483], [491], [499], [507], [515], [519], [521], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [672], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [912], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-10-24 22:00:00,012 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 22:00:00,013 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 22:00:03,178 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 22:00:03,179 INFO L272 AbstractInterpreter]: Visited 135 different actions 135 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-24 22:00:03,191 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:00:03,191 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 22:00:05,123 INFO L232 lantSequenceWeakener]: Weakened 247 states. On average, predicates are now at 78.03% of their original sizes. [2018-10-24 22:00:05,123 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 22:00:05,774 INFO L413 sIntCurrentIteration]: We have 254 unified AI predicates [2018-10-24 22:00:05,775 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 22:00:05,776 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 22:00:05,776 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [5] total 11 [2018-10-24 22:00:05,776 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:00:05,777 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-24 22:00:05,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-24 22:00:05,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-10-24 22:00:05,778 INFO L87 Difference]: Start difference. First operand 3545 states and 4965 transitions. Second operand 8 states. [2018-10-24 22:00:08,697 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 22:00:55,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:00:55,859 INFO L93 Difference]: Finished difference Result 7424 states and 10344 transitions. [2018-10-24 22:00:55,859 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 22:00:55,859 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 255 [2018-10-24 22:00:55,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:00:55,876 INFO L225 Difference]: With dead ends: 7424 [2018-10-24 22:00:55,876 INFO L226 Difference]: Without dead ends: 3885 [2018-10-24 22:00:55,888 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 256 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-10-24 22:00:55,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3885 states. [2018-10-24 22:00:55,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3885 to 3883. [2018-10-24 22:00:55,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3883 states. [2018-10-24 22:00:55,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3883 states to 3883 states and 5311 transitions. [2018-10-24 22:00:55,974 INFO L78 Accepts]: Start accepts. Automaton has 3883 states and 5311 transitions. Word has length 255 [2018-10-24 22:00:55,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:00:55,974 INFO L481 AbstractCegarLoop]: Abstraction has 3883 states and 5311 transitions. [2018-10-24 22:00:55,974 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-24 22:00:55,974 INFO L276 IsEmpty]: Start isEmpty. Operand 3883 states and 5311 transitions. [2018-10-24 22:00:55,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2018-10-24 22:00:55,981 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:00:55,982 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:00:55,982 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:00:55,982 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:00:55,983 INFO L82 PathProgramCache]: Analyzing trace with hash -877306342, now seen corresponding path program 1 times [2018-10-24 22:00:55,983 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:00:55,983 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:00:55,984 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:00:55,984 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:00:55,984 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:00:56,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:00:56,308 WARN L179 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-10-24 22:00:56,946 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 216 proven. 115 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-10-24 22:00:56,946 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:00:56,947 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 22:00:56,947 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 348 with the following transitions: [2018-10-24 22:00:56,947 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], [475], [483], [491], [499], [507], [515], [519], [521], [524], [532], [540], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [672], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [760], [761], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [912], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-10-24 22:00:56,954 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 22:00:56,955 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 22:00:58,349 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 22:01:07,201 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 22:01:07,202 INFO L272 AbstractInterpreter]: Visited 139 different actions 408 times. Merged at 5 different actions 13 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 22:01:07,212 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:01:07,212 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 22:01:10,377 INFO L232 lantSequenceWeakener]: Weakened 38 states. On average, predicates are now at 81.1% of their original sizes. [2018-10-24 22:01:10,377 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 22:01:32,388 INFO L413 sIntCurrentIteration]: We have 346 unified AI predicates [2018-10-24 22:01:32,389 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 22:01:32,389 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 22:01:32,391 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [7] total 24 [2018-10-24 22:01:32,391 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:01:32,392 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-10-24 22:01:32,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-10-24 22:01:32,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2018-10-24 22:01:32,394 INFO L87 Difference]: Start difference. First operand 3883 states and 5311 transitions. Second operand 19 states. Received shutdown request... [2018-10-24 22:03:00,867 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-24 22:03:00,868 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 22:03:00,873 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 22:03:00,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:03:00 BoogieIcfgContainer [2018-10-24 22:03:00,873 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 22:03:00,874 INFO L168 Benchmark]: Toolchain (without parser) took 213167.68 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 3.3 GB in the end (delta: -1.9 GB). Peak memory consumption was 818.8 MB. Max. memory is 7.1 GB. [2018-10-24 22:03:00,876 INFO L168 Benchmark]: CDTParser took 0.54 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. [2018-10-24 22:03:00,876 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1109.11 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2018-10-24 22:03:00,881 INFO L168 Benchmark]: Boogie Procedure Inliner took 360.00 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 769.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -878.5 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB. [2018-10-24 22:03:00,883 INFO L168 Benchmark]: Boogie Preprocessor took 204.11 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 27.7 MB). Peak memory consumption was 27.7 MB. Max. memory is 7.1 GB. [2018-10-24 22:03:00,884 INFO L168 Benchmark]: RCFGBuilder took 7123.73 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 260.6 MB). Peak memory consumption was 260.6 MB. Max. memory is 7.1 GB. [2018-10-24 22:03:00,885 INFO L168 Benchmark]: TraceAbstraction took 204365.80 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.9 GB in the beginning and 3.3 GB in the end (delta: -1.4 GB). Peak memory consumption was 555.2 MB. Max. memory is 7.1 GB. [2018-10-24 22:03:00,894 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.54 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 1109.11 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 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 360.00 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 769.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -878.5 MB). Peak memory consumption was 28.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 204.11 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 27.7 MB). Peak memory consumption was 27.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 7123.73 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 260.6 MB). Peak memory consumption was 260.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 204365.80 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.9 GB in the beginning and 3.3 GB in the end (delta: -1.4 GB). Peak memory consumption was 555.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 151]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 151). Cancelled while BasicCegarLoop was constructing difference of abstraction (3883states) and FLOYD_HOARE automaton (currently 17 states, 19 states before enhancement),while PredicateComparison was comparing new predicate (quantifier-free) to 28 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 410 locations, 1 error locations. TIMEOUT Result, 204.2s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 159.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 835 SDtfs, 6790 SDslu, 594 SDs, 0 SdLazy, 9086 SolverSat, 2421 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 63.5s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 646 GetRequests, 566 SyntacticMatches, 24 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 25.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3883occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 13.5s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9959269323671496 AbsIntWeakeningRatio, 0.09666666666666666 AbsIntAvgWeakeningVarsNumRemoved, 597.9033333333333 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 5 MinimizatonAttempts, 81 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 1108 NumberOfCodeBlocks, 1108 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 1102 ConstructedInterpolants, 0 QuantifiedInterpolants, 948923 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 525/686 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown