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-INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label59_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 12:36:32,771 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 12:36:32,773 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 12:36:32,787 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 12:36:32,787 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 12:36:32,788 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 12:36:32,790 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 12:36:32,791 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 12:36:32,793 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 12:36:32,794 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 12:36:32,795 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 12:36:32,795 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 12:36:32,796 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 12:36:32,797 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 12:36:32,799 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 12:36:32,800 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 12:36:32,801 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 12:36:32,807 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 12:36:32,812 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 12:36:32,814 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 12:36:32,815 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 12:36:32,816 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 12:36:32,823 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-27 12:36:32,839 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-10-27 12:36:32,870 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 12:36:32,871 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 12:36:32,872 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 12:36:32,872 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 12:36:32,872 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 12:36:32,872 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 12:36:32,872 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 12:36:32,876 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 12:36:32,876 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 12:36:32,877 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 12:36:32,877 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 12:36:32,877 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 12:36:32,878 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 12:36:32,878 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 12:36:32,878 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 12:36:32,878 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 12:36:32,879 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 12:36:32,879 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 12:36:32,879 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 12:36:32,879 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 12:36:32,880 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 12:36:32,880 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 12:36:32,880 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 12:36:32,880 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 12:36:32,880 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 12:36:32,881 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 12:36:32,883 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 12:36:32,883 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 12:36:32,884 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 12:36:32,884 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 12:36:32,884 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 12:36:32,884 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 12:36:32,884 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 12:36:32,885 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 12:36:32,961 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 12:36:32,973 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 12:36:32,977 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 12:36:32,978 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 12:36:32,978 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 12:36:32,979 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label59_true-unreach-call.c [2018-10-27 12:36:33,041 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/27a5ef37b/679ecd88cda549b2a393c92e6b6dd999/FLAGce45003ff [2018-10-27 12:36:33,792 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 12:36:33,793 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label59_true-unreach-call.c [2018-10-27 12:36:33,817 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/27a5ef37b/679ecd88cda549b2a393c92e6b6dd999/FLAGce45003ff [2018-10-27 12:36:33,836 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/27a5ef37b/679ecd88cda549b2a393c92e6b6dd999 [2018-10-27 12:36:33,849 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 12:36:33,851 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 12:36:33,852 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 12:36:33,852 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 12:36:33,857 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 12:36:33,858 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:36:33" (1/1) ... [2018-10-27 12:36:33,861 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f4693fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:36:33, skipping insertion in model container [2018-10-27 12:36:33,861 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:36:33" (1/1) ... [2018-10-27 12:36:33,872 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 12:36:33,963 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 12:36:34,693 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 12:36:34,698 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 12:36:34,937 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 12:36:34,959 INFO L193 MainTranslator]: Completed translation [2018-10-27 12:36:34,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:36:34 WrapperNode [2018-10-27 12:36:34,960 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 12:36:34,961 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 12:36:34,961 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 12:36:34,961 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 12:36:34,971 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:36:34" (1/1) ... [2018-10-27 12:36:35,024 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:36:34" (1/1) ... [2018-10-27 12:36:35,259 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 12:36:35,259 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 12:36:35,259 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 12:36:35,260 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 12:36:35,272 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:36:34" (1/1) ... [2018-10-27 12:36:35,272 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:36:34" (1/1) ... [2018-10-27 12:36:35,282 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:36:34" (1/1) ... [2018-10-27 12:36:35,282 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:36:34" (1/1) ... [2018-10-27 12:36:35,340 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:36:34" (1/1) ... [2018-10-27 12:36:35,374 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:36:34" (1/1) ... [2018-10-27 12:36:35,397 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:36:34" (1/1) ... [2018-10-27 12:36:35,430 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 12:36:35,431 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 12:36:35,431 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 12:36:35,431 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 12:36:35,432 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:36:34" (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 [2018-10-27 12:36:35,495 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 12:36:35,495 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 12:36:35,495 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 12:36:35,496 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 12:36:35,496 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 12:36:35,496 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 12:36:35,496 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 12:36:35,496 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 12:36:40,300 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 12:36:40,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:36:40 BoogieIcfgContainer [2018-10-27 12:36:40,302 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 12:36:40,303 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 12:36:40,303 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 12:36:40,306 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 12:36:40,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 12:36:33" (1/3) ... [2018-10-27 12:36:40,309 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e47c070 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:36:40, skipping insertion in model container [2018-10-27 12:36:40,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:36:34" (2/3) ... [2018-10-27 12:36:40,310 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e47c070 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:36:40, skipping insertion in model container [2018-10-27 12:36:40,310 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:36:40" (3/3) ... [2018-10-27 12:36:40,312 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label59_true-unreach-call.c [2018-10-27 12:36:40,320 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 12:36:40,332 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 12:36:40,355 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 12:36:40,402 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 12:36:40,402 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 12:36:40,402 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 12:36:40,402 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 12:36:40,402 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 12:36:40,403 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 12:36:40,403 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 12:36:40,403 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 12:36:40,433 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-10-27 12:36:40,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2018-10-27 12:36:40,452 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 12:36:40,454 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 12:36:40,457 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 12:36:40,462 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:36:40,463 INFO L82 PathProgramCache]: Analyzing trace with hash -209089196, now seen corresponding path program 1 times [2018-10-27 12:36:40,465 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 12:36:40,513 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:36:40,513 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:36:40,513 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:36:40,513 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 12:36:40,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:36:41,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 12:36:41,720 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 12:36:41,721 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 12:36:41,721 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 12:36:41,728 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 12:36:41,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 12:36:41,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 12:36:41,752 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 4 states. [2018-10-27 12:36:45,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 12:36:45,124 INFO L93 Difference]: Finished difference Result 1084 states and 1945 transitions. [2018-10-27 12:36:45,126 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 12:36:45,127 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 181 [2018-10-27 12:36:45,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 12:36:45,156 INFO L225 Difference]: With dead ends: 1084 [2018-10-27 12:36:45,156 INFO L226 Difference]: Without dead ends: 766 [2018-10-27 12:36:45,164 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 12:36:45,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766 states. [2018-10-27 12:36:45,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 766 to 524. [2018-10-27 12:36:45,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 524 states. [2018-10-27 12:36:45,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 918 transitions. [2018-10-27 12:36:45,273 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 918 transitions. Word has length 181 [2018-10-27 12:36:45,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 12:36:45,275 INFO L481 AbstractCegarLoop]: Abstraction has 524 states and 918 transitions. [2018-10-27 12:36:45,275 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 12:36:45,275 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 918 transitions. [2018-10-27 12:36:45,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-10-27 12:36:45,283 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 12:36:45,283 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 12:36:45,284 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 12:36:45,284 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:36:45,284 INFO L82 PathProgramCache]: Analyzing trace with hash -588288187, now seen corresponding path program 1 times [2018-10-27 12:36:45,285 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 12:36:45,286 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:36:45,286 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:36:45,286 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:36:45,286 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 12:36:45,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:36:45,611 WARN L179 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 12:36:45,720 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 12:36:45,720 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 12:36:45,721 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 12:36:45,721 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 12:36:45,723 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 12:36:45,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 12:36:45,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 12:36:45,723 INFO L87 Difference]: Start difference. First operand 524 states and 918 transitions. Second operand 5 states. [2018-10-27 12:36:48,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 12:36:48,768 INFO L93 Difference]: Finished difference Result 1614 states and 2930 transitions. [2018-10-27 12:36:48,779 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 12:36:48,779 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 192 [2018-10-27 12:36:48,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 12:36:48,791 INFO L225 Difference]: With dead ends: 1614 [2018-10-27 12:36:48,791 INFO L226 Difference]: Without dead ends: 1096 [2018-10-27 12:36:48,796 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-27 12:36:48,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1096 states. [2018-10-27 12:36:48,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1096 to 1073. [2018-10-27 12:36:48,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1073 states. [2018-10-27 12:36:48,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1073 states to 1073 states and 1769 transitions. [2018-10-27 12:36:48,871 INFO L78 Accepts]: Start accepts. Automaton has 1073 states and 1769 transitions. Word has length 192 [2018-10-27 12:36:48,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 12:36:48,872 INFO L481 AbstractCegarLoop]: Abstraction has 1073 states and 1769 transitions. [2018-10-27 12:36:48,872 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 12:36:48,872 INFO L276 IsEmpty]: Start isEmpty. Operand 1073 states and 1769 transitions. [2018-10-27 12:36:48,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2018-10-27 12:36:48,880 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 12:36:48,881 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 12:36:48,881 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 12:36:48,881 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:36:48,882 INFO L82 PathProgramCache]: Analyzing trace with hash 1719938640, now seen corresponding path program 1 times [2018-10-27 12:36:48,882 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 12:36:48,885 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:36:48,885 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:36:48,885 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:36:48,885 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 12:36:48,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:36:49,226 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 12:36:49,226 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 12:36:49,226 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 12:36:49,226 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 12:36:49,227 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 12:36:49,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 12:36:49,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 12:36:49,228 INFO L87 Difference]: Start difference. First operand 1073 states and 1769 transitions. Second operand 3 states. [2018-10-27 12:36:51,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 12:36:51,974 INFO L93 Difference]: Finished difference Result 3104 states and 5262 transitions. [2018-10-27 12:36:51,977 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 12:36:51,977 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 194 [2018-10-27 12:36:51,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 12:36:51,995 INFO L225 Difference]: With dead ends: 3104 [2018-10-27 12:36:51,995 INFO L226 Difference]: Without dead ends: 2037 [2018-10-27 12:36:52,004 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 12:36:52,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2037 states. [2018-10-27 12:36:52,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2037 to 2030. [2018-10-27 12:36:52,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2030 states. [2018-10-27 12:36:52,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2030 states to 2030 states and 3225 transitions. [2018-10-27 12:36:52,086 INFO L78 Accepts]: Start accepts. Automaton has 2030 states and 3225 transitions. Word has length 194 [2018-10-27 12:36:52,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 12:36:52,087 INFO L481 AbstractCegarLoop]: Abstraction has 2030 states and 3225 transitions. [2018-10-27 12:36:52,087 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 12:36:52,087 INFO L276 IsEmpty]: Start isEmpty. Operand 2030 states and 3225 transitions. [2018-10-27 12:36:52,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2018-10-27 12:36:52,096 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 12:36:52,097 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 12:36:52,097 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 12:36:52,097 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:36:52,098 INFO L82 PathProgramCache]: Analyzing trace with hash 284836524, now seen corresponding path program 1 times [2018-10-27 12:36:52,098 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 12:36:52,099 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:36:52,099 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:36:52,099 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:36:52,099 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 12:36:52,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:36:52,372 WARN L179 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-10-27 12:36:52,740 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 12:36:52,741 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 12:36:52,741 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 12:36:52,742 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 203 with the following transitions: [2018-10-27 12:36:52,745 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [8], [12], [13], [16], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [909], [911], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 12:36:52,814 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 12:36:52,815 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 12:36:54,262 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 12:36:54,264 INFO L272 AbstractInterpreter]: Visited 182 different actions 182 times. Never merged. Never widened. Never found a fixpoint. Largest state had 88 variables. [2018-10-27 12:36:54,297 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:36:54,297 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 12:36:55,315 INFO L227 lantSequenceWeakener]: Weakened 191 states. On average, predicates are now at 73% of their original sizes. [2018-10-27 12:36:55,316 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 12:36:56,544 INFO L415 sIntCurrentIteration]: We unified 201 AI predicates to 201 [2018-10-27 12:36:56,544 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 12:36:56,545 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 12:36:56,545 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [25] imperfect sequences [6] total 29 [2018-10-27 12:36:56,545 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 12:36:56,546 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-10-27 12:36:56,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-10-27 12:36:56,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=467, Unknown=0, NotChecked=0, Total=600 [2018-10-27 12:36:56,547 INFO L87 Difference]: Start difference. First operand 2030 states and 3225 transitions. Second operand 25 states. [2018-10-27 12:37:30,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 12:37:30,026 INFO L93 Difference]: Finished difference Result 4264 states and 6779 transitions. [2018-10-27 12:37:30,027 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-27 12:37:30,027 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 202 [2018-10-27 12:37:30,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 12:37:30,039 INFO L225 Difference]: With dead ends: 4264 [2018-10-27 12:37:30,039 INFO L226 Difference]: Without dead ends: 2240 [2018-10-27 12:37:30,046 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 204 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=182, Invalid=574, Unknown=0, NotChecked=0, Total=756 [2018-10-27 12:37:30,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2240 states. [2018-10-27 12:37:30,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2240 to 2238. [2018-10-27 12:37:30,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2238 states. [2018-10-27 12:37:30,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2238 states to 2238 states and 3442 transitions. [2018-10-27 12:37:30,109 INFO L78 Accepts]: Start accepts. Automaton has 2238 states and 3442 transitions. Word has length 202 [2018-10-27 12:37:30,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 12:37:30,109 INFO L481 AbstractCegarLoop]: Abstraction has 2238 states and 3442 transitions. [2018-10-27 12:37:30,109 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-10-27 12:37:30,110 INFO L276 IsEmpty]: Start isEmpty. Operand 2238 states and 3442 transitions. [2018-10-27 12:37:30,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-10-27 12:37:30,118 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 12:37:30,118 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 12:37:30,119 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 12:37:30,119 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:37:30,119 INFO L82 PathProgramCache]: Analyzing trace with hash -576572177, now seen corresponding path program 1 times [2018-10-27 12:37:30,120 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 12:37:30,121 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:37:30,121 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:37:30,121 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:37:30,121 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 12:37:30,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:37:30,418 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-10-27 12:37:31,407 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 28 proven. 17 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 12:37:31,408 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 12:37:31,408 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 12:37:31,408 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 215 with the following transitions: [2018-10-27 12:37:31,409 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [8], [12], [13], [16], [17], [21], [24], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [909], [911], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 12:37:31,421 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 12:37:31,421 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 12:37:32,890 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 12:37:32,890 INFO L272 AbstractInterpreter]: Visited 186 different actions 366 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-10-27 12:37:32,899 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:37:32,899 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 12:37:34,674 INFO L227 lantSequenceWeakener]: Weakened 83 states. On average, predicates are now at 77.46% of their original sizes. [2018-10-27 12:37:34,674 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 12:37:41,220 INFO L415 sIntCurrentIteration]: We unified 213 AI predicates to 213 [2018-10-27 12:37:41,220 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 12:37:41,221 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 12:37:41,221 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [34] imperfect sequences [9] total 41 [2018-10-27 12:37:41,221 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 12:37:41,222 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-10-27 12:37:41,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-10-27 12:37:41,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=914, Unknown=0, NotChecked=0, Total=1122 [2018-10-27 12:37:41,223 INFO L87 Difference]: Start difference. First operand 2238 states and 3442 transitions. Second operand 34 states. [2018-10-27 12:38:46,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 12:38:46,308 INFO L93 Difference]: Finished difference Result 4476 states and 7003 transitions. [2018-10-27 12:38:46,309 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-27 12:38:46,309 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 214 [2018-10-27 12:38:46,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 12:38:46,322 INFO L225 Difference]: With dead ends: 4476 [2018-10-27 12:38:46,322 INFO L226 Difference]: Without dead ends: 2452 [2018-10-27 12:38:46,329 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 225 GetRequests, 148 SyntacticMatches, 33 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 873 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=373, Invalid=1697, Unknown=0, NotChecked=0, Total=2070 [2018-10-27 12:38:46,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2452 states. [2018-10-27 12:38:46,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2452 to 2449. [2018-10-27 12:38:46,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2449 states. [2018-10-27 12:38:46,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2449 states to 2449 states and 3670 transitions. [2018-10-27 12:38:46,394 INFO L78 Accepts]: Start accepts. Automaton has 2449 states and 3670 transitions. Word has length 214 [2018-10-27 12:38:46,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 12:38:46,394 INFO L481 AbstractCegarLoop]: Abstraction has 2449 states and 3670 transitions. [2018-10-27 12:38:46,394 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-10-27 12:38:46,394 INFO L276 IsEmpty]: Start isEmpty. Operand 2449 states and 3670 transitions. [2018-10-27 12:38:46,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2018-10-27 12:38:46,403 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 12:38:46,403 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 12:38:46,403 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 12:38:46,404 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:38:46,404 INFO L82 PathProgramCache]: Analyzing trace with hash 139297364, now seen corresponding path program 1 times [2018-10-27 12:38:46,404 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 12:38:46,405 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:38:46,405 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:38:46,405 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:38:46,405 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 12:38:46,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:38:46,761 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 12:38:46,761 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 12:38:46,762 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 12:38:46,762 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 215 with the following transitions: [2018-10-27 12:38:46,762 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [8], [12], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [909], [911], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 12:38:46,774 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 12:38:46,775 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 12:38:47,830 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 12:38:47,830 INFO L272 AbstractInterpreter]: Visited 186 different actions 364 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-10-27 12:38:47,835 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:38:47,836 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 12:38:47,836 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 12:38:47,836 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 12:38:47,844 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:38:47,844 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 12:38:48,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:38:48,061 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 12:38:48,282 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 12:38:48,283 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 12:38:48,449 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-10-27 12:38:49,308 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 12:38:49,337 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 12:38:49,337 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2018-10-27 12:38:49,337 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 12:38:49,338 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-27 12:38:49,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-27 12:38:49,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-10-27 12:38:49,338 INFO L87 Difference]: Start difference. First operand 2449 states and 3670 transitions. Second operand 8 states. [2018-10-27 12:38:53,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 12:38:53,412 INFO L93 Difference]: Finished difference Result 8331 states and 15541 transitions. [2018-10-27 12:38:53,422 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-10-27 12:38:53,422 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 214 [2018-10-27 12:38:53,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 12:38:53,475 INFO L225 Difference]: With dead ends: 8331 [2018-10-27 12:38:53,475 INFO L226 Difference]: Without dead ends: 6307 [2018-10-27 12:38:53,506 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 442 GetRequests, 428 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2018-10-27 12:38:53,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6307 states. [2018-10-27 12:38:53,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6307 to 6186. [2018-10-27 12:38:53,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6186 states. [2018-10-27 12:38:53,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6186 states to 6186 states and 9953 transitions. [2018-10-27 12:38:53,783 INFO L78 Accepts]: Start accepts. Automaton has 6186 states and 9953 transitions. Word has length 214 [2018-10-27 12:38:53,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 12:38:53,783 INFO L481 AbstractCegarLoop]: Abstraction has 6186 states and 9953 transitions. [2018-10-27 12:38:53,783 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-27 12:38:53,784 INFO L276 IsEmpty]: Start isEmpty. Operand 6186 states and 9953 transitions. [2018-10-27 12:38:53,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2018-10-27 12:38:53,812 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 12:38:53,812 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 12:38:53,812 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 12:38:53,813 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:38:53,813 INFO L82 PathProgramCache]: Analyzing trace with hash 1069054914, now seen corresponding path program 1 times [2018-10-27 12:38:53,813 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 12:38:53,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:38:53,814 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:38:53,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:38:53,814 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 12:38:53,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:38:54,364 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 70 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-10-27 12:38:54,365 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 12:38:54,365 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 12:38:54,365 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 240 with the following transitions: [2018-10-27 12:38:54,366 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [8], [12], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [65], [68], [71], [75], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [909], [911], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 12:38:54,373 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 12:38:54,373 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 12:38:56,412 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 12:38:56,412 INFO L272 AbstractInterpreter]: Visited 187 different actions 369 times. Merged at 5 different actions 7 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-10-27 12:38:56,418 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:38:56,418 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 12:38:56,418 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 12:38:56,418 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 12:38:56,427 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:38:56,427 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 12:38:56,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:38:56,622 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 12:38:56,739 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 64 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-10-27 12:38:56,740 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 12:38:56,832 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 64 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-10-27 12:38:56,854 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 12:38:56,854 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-10-27 12:38:56,854 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 12:38:56,855 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-27 12:38:56,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-27 12:38:56,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-10-27 12:38:56,856 INFO L87 Difference]: Start difference. First operand 6186 states and 9953 transitions. Second operand 9 states. [2018-10-27 12:38:59,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 12:38:59,655 INFO L93 Difference]: Finished difference Result 17910 states and 32073 transitions. [2018-10-27 12:38:59,656 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-27 12:38:59,656 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 239 [2018-10-27 12:38:59,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 12:38:59,749 INFO L225 Difference]: With dead ends: 17910 [2018-10-27 12:38:59,750 INFO L226 Difference]: Without dead ends: 12149 [2018-10-27 12:38:59,819 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 495 GetRequests, 478 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2018-10-27 12:38:59,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12149 states. [2018-10-27 12:39:00,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12149 to 11213. [2018-10-27 12:39:00,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11213 states. [2018-10-27 12:39:00,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11213 states to 11213 states and 17277 transitions. [2018-10-27 12:39:00,351 INFO L78 Accepts]: Start accepts. Automaton has 11213 states and 17277 transitions. Word has length 239 [2018-10-27 12:39:00,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 12:39:00,352 INFO L481 AbstractCegarLoop]: Abstraction has 11213 states and 17277 transitions. [2018-10-27 12:39:00,352 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-27 12:39:00,352 INFO L276 IsEmpty]: Start isEmpty. Operand 11213 states and 17277 transitions. [2018-10-27 12:39:00,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2018-10-27 12:39:00,388 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 12:39:00,389 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 12:39:00,389 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 12:39:00,389 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:39:00,389 INFO L82 PathProgramCache]: Analyzing trace with hash -1828610292, now seen corresponding path program 1 times [2018-10-27 12:39:00,390 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 12:39:00,390 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:39:00,390 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:39:00,391 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:39:00,391 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 12:39:00,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:39:00,783 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 87 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-10-27 12:39:00,784 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 12:39:00,784 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 12:39:00,784 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 261 with the following transitions: [2018-10-27 12:39:00,784 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [8], [12], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [174], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [909], [911], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 12:39:00,790 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 12:39:00,790 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 12:39:02,651 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 12:39:02,652 INFO L272 AbstractInterpreter]: Visited 187 different actions 369 times. Merged at 5 different actions 7 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-10-27 12:39:02,690 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:39:02,690 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 12:39:02,691 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 12:39:02,691 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2018-10-27 12:39:02,704 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:39:02,704 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 12:39:02,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:39:02,923 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 12:39:03,482 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 87 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-10-27 12:39:03,482 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 12:39:04,492 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 87 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-10-27 12:39:04,515 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 12:39:04,515 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2018-10-27 12:39:04,515 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 12:39:04,516 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-27 12:39:04,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-27 12:39:04,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-10-27 12:39:04,517 INFO L87 Difference]: Start difference. First operand 11213 states and 17277 transitions. Second operand 8 states. [2018-10-27 12:39:13,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 12:39:13,100 INFO L93 Difference]: Finished difference Result 45225 states and 78469 transitions. [2018-10-27 12:39:13,101 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-10-27 12:39:13,101 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 260 [2018-10-27 12:39:13,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 12:39:13,320 INFO L225 Difference]: With dead ends: 45225 [2018-10-27 12:39:13,321 INFO L226 Difference]: Without dead ends: 34492 [2018-10-27 12:39:13,384 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 574 GetRequests, 540 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=233, Invalid=957, Unknown=0, NotChecked=0, Total=1190 [2018-10-27 12:39:13,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34492 states. [2018-10-27 12:39:14,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34492 to 33433. [2018-10-27 12:39:14,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33433 states. [2018-10-27 12:39:14,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33433 states to 33433 states and 48097 transitions. [2018-10-27 12:39:14,788 INFO L78 Accepts]: Start accepts. Automaton has 33433 states and 48097 transitions. Word has length 260 [2018-10-27 12:39:14,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 12:39:14,788 INFO L481 AbstractCegarLoop]: Abstraction has 33433 states and 48097 transitions. [2018-10-27 12:39:14,788 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-27 12:39:14,788 INFO L276 IsEmpty]: Start isEmpty. Operand 33433 states and 48097 transitions. [2018-10-27 12:39:14,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2018-10-27 12:39:14,882 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 12:39:14,882 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 12:39:14,882 INFO L424 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 12:39:14,883 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:39:14,883 INFO L82 PathProgramCache]: Analyzing trace with hash 1896904569, now seen corresponding path program 1 times [2018-10-27 12:39:14,883 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 12:39:14,884 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:39:14,884 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:39:14,884 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:39:14,884 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 12:39:14,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:39:15,488 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 112 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 12:39:15,488 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 12:39:15,488 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 12:39:15,489 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 282 with the following transitions: [2018-10-27 12:39:15,489 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [315], [320], [322], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [909], [911], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 12:39:15,494 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 12:39:15,495 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 12:39:17,085 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 12:39:17,085 INFO L272 AbstractInterpreter]: Visited 186 different actions 367 times. Merged at 5 different actions 7 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-10-27 12:39:17,090 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:39:17,090 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 12:39:17,090 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 12:39:17,090 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 12:39:17,364 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:39:17,365 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 12:39:17,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:39:17,558 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 12:39:18,259 WARN L179 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 10 [2018-10-27 12:39:18,523 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 112 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 12:39:18,523 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 12:39:18,886 WARN L179 SmtUtils]: Spent 356.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 23 [2018-10-27 12:39:19,199 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 112 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 12:39:19,221 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 12:39:19,221 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2018-10-27 12:39:19,221 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 12:39:19,222 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-27 12:39:19,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-27 12:39:19,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2018-10-27 12:39:19,222 INFO L87 Difference]: Start difference. First operand 33433 states and 48097 transitions. Second operand 10 states. [2018-10-27 12:39:27,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 12:39:27,804 INFO L93 Difference]: Finished difference Result 83217 states and 134450 transitions. [2018-10-27 12:39:27,805 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2018-10-27 12:39:27,805 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 281 [2018-10-27 12:39:27,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 12:39:28,130 INFO L225 Difference]: With dead ends: 83217 [2018-10-27 12:39:28,130 INFO L226 Difference]: Without dead ends: 50206 [2018-10-27 12:39:28,280 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 636 GetRequests, 579 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 989 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=646, Invalid=2660, Unknown=0, NotChecked=0, Total=3306 [2018-10-27 12:39:28,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50206 states. [2018-10-27 12:39:30,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50206 to 47992. [2018-10-27 12:39:30,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47992 states. [2018-10-27 12:39:30,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47992 states to 47992 states and 64279 transitions. [2018-10-27 12:39:30,553 INFO L78 Accepts]: Start accepts. Automaton has 47992 states and 64279 transitions. Word has length 281 [2018-10-27 12:39:30,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 12:39:30,556 INFO L481 AbstractCegarLoop]: Abstraction has 47992 states and 64279 transitions. [2018-10-27 12:39:30,556 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-27 12:39:30,556 INFO L276 IsEmpty]: Start isEmpty. Operand 47992 states and 64279 transitions. [2018-10-27 12:39:30,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2018-10-27 12:39:30,625 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 12:39:30,625 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 12:39:30,625 INFO L424 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 12:39:30,625 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:39:30,626 INFO L82 PathProgramCache]: Analyzing trace with hash 1060268907, now seen corresponding path program 1 times [2018-10-27 12:39:30,626 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 12:39:30,627 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:39:30,627 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:39:30,627 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:39:30,627 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 12:39:30,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:39:31,188 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 111 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 12:39:31,188 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 12:39:31,189 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 12:39:31,189 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 294 with the following transitions: [2018-10-27 12:39:31,189 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [8], [12], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [436], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [909], [911], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 12:39:31,195 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 12:39:31,196 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 12:39:32,223 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 12:39:32,223 INFO L272 AbstractInterpreter]: Visited 185 different actions 364 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-10-27 12:39:32,234 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:39:32,234 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 12:39:33,712 INFO L227 lantSequenceWeakener]: Weakened 288 states. On average, predicates are now at 71.89% of their original sizes. [2018-10-27 12:39:33,713 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 12:39:35,113 INFO L415 sIntCurrentIteration]: We unified 292 AI predicates to 292 [2018-10-27 12:39:35,114 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 12:39:35,114 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 12:39:35,114 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [23] imperfect sequences [5] total 26 [2018-10-27 12:39:35,115 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 12:39:35,116 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-27 12:39:35,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-27 12:39:35,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=411, Unknown=0, NotChecked=0, Total=506 [2018-10-27 12:39:35,116 INFO L87 Difference]: Start difference. First operand 47992 states and 64279 transitions. Second operand 23 states. [2018-10-27 12:40:08,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 12:40:08,594 INFO L93 Difference]: Finished difference Result 92947 states and 124877 transitions. [2018-10-27 12:40:08,594 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-27 12:40:08,595 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 293 [2018-10-27 12:40:08,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 12:40:08,797 INFO L225 Difference]: With dead ends: 92947 [2018-10-27 12:40:08,798 INFO L226 Difference]: Without dead ends: 57450 [2018-10-27 12:40:08,883 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 301 GetRequests, 271 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=203, Invalid=789, Unknown=0, NotChecked=0, Total=992 [2018-10-27 12:40:08,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57450 states. [2018-10-27 12:40:09,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57450 to 57437. [2018-10-27 12:40:09,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57437 states. [2018-10-27 12:40:10,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57437 states to 57437 states and 75304 transitions. [2018-10-27 12:40:10,114 INFO L78 Accepts]: Start accepts. Automaton has 57437 states and 75304 transitions. Word has length 293 [2018-10-27 12:40:10,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 12:40:10,115 INFO L481 AbstractCegarLoop]: Abstraction has 57437 states and 75304 transitions. [2018-10-27 12:40:10,115 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-10-27 12:40:10,115 INFO L276 IsEmpty]: Start isEmpty. Operand 57437 states and 75304 transitions. [2018-10-27 12:40:10,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2018-10-27 12:40:10,179 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 12:40:10,180 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 12:40:10,180 INFO L424 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 12:40:10,180 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:40:10,181 INFO L82 PathProgramCache]: Analyzing trace with hash -1261781176, now seen corresponding path program 1 times [2018-10-27 12:40:10,181 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 12:40:10,182 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:40:10,182 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:40:10,182 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 12:40:10,182 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 12:40:10,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:40:11,299 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 119 proven. 19 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 12:40:11,299 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 12:40:11,299 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 12:40:11,300 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 306 with the following transitions: [2018-10-27 12:40:11,300 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [8], [12], [13], [17], [21], [24], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [436], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [909], [911], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-27 12:40:11,305 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-10-27 12:40:11,306 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 12:40:14,662 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 12:40:14,662 INFO L272 AbstractInterpreter]: Visited 189 different actions 747 times. Merged at 8 different actions 31 times. Never widened. Found 7 fixpoints after 3 different actions. Largest state had 88 variables. [2018-10-27 12:40:14,663 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 12:40:14,664 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 12:40:14,664 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 12:40:14,664 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 12:40:14,672 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 12:40:14,672 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) Received shutdown request... [2018-10-27 12:40:14,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 12:40:14,894 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 12:40:14,922 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-27 12:40:15,123 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 12:40:15,123 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 12:40:15,129 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 12:40:15,129 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 12:40:15 BoogieIcfgContainer [2018-10-27 12:40:15,129 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 12:40:15,130 INFO L168 Benchmark]: Toolchain (without parser) took 221280.54 ms. Allocated memory was 1.5 GB in the beginning and 3.9 GB in the end (delta: 2.4 GB). Free memory was 1.4 GB in the beginning and 1.7 GB in the end (delta: -294.6 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2018-10-27 12:40:15,131 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-27 12:40:15,131 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1108.27 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: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. [2018-10-27 12:40:15,135 INFO L168 Benchmark]: Boogie Procedure Inliner took 298.16 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 731.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -857.0 MB). Peak memory consumption was 40.4 MB. Max. memory is 7.1 GB. [2018-10-27 12:40:15,137 INFO L168 Benchmark]: Boogie Preprocessor took 171.13 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2018-10-27 12:40:15,138 INFO L168 Benchmark]: RCFGBuilder took 4871.05 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 262.0 MB). Peak memory consumption was 262.0 MB. Max. memory is 7.1 GB. [2018-10-27 12:40:15,139 INFO L168 Benchmark]: TraceAbstraction took 214826.51 ms. Allocated memory was 2.2 GB in the beginning and 3.9 GB in the end (delta: 1.7 GB). Free memory was 1.9 GB in the beginning and 1.7 GB in the end (delta: 212.4 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-10-27 12:40:15,144 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1108.27 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: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 298.16 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 731.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -857.0 MB). Peak memory consumption was 40.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 171.13 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 4871.05 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 262.0 MB). Peak memory consumption was 262.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 214826.51 ms. Allocated memory was 2.2 GB in the beginning and 3.9 GB in the end (delta: 1.7 GB). Free memory was 1.9 GB in the beginning and 1.7 GB in the end (delta: 212.4 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1557]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1557). Cancelled while BasicCegarLoop was analyzing trace of length 306 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 9 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 312 locations, 1 error locations. TIMEOUT Result, 214.7s OverallTime, 11 OverallIterations, 4 TraceHistogramMax, 166.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2493 SDtfs, 17893 SDslu, 4522 SDs, 0 SdLazy, 29074 SolverSat, 4979 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 90.8s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 2896 GetRequests, 2631 SyntacticMatches, 37 SemanticMatches, 228 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2529 ImplicationChecksByTransitivity, 15.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=57437occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 14.0s AbstIntTime, 8 AbstIntIterations, 3 AbstIntStrong, 0.9991088110676073 AbsIntWeakeningRatio, 0.29461756373937675 AbsIntAvgWeakeningVarsNumRemoved, 52.022662889518415 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 6.0s AutomataMinimizationTime, 10 MinimizatonAttempts, 4620 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 9.6s InterpolantComputationTime, 3264 NumberOfCodeBlocks, 3264 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 4240 ConstructedInterpolants, 0 QuantifiedInterpolants, 1804687 SizeOfPredicates, 15 NumberOfNonLiveVariables, 4600 ConjunctsInSsa, 17 ConjunctsInUnsatCore, 18 InterpolantComputations, 3 PerfectInterpolantSequences, 1171/1224 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown