java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label43_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 03:58:53,582 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 03:58:53,584 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 03:58:53,601 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 03:58:53,602 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 03:58:53,603 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 03:58:53,606 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 03:58:53,609 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 03:58:53,612 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 03:58:53,613 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 03:58:53,615 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 03:58:53,615 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 03:58:53,617 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 03:58:53,620 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 03:58:53,626 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 03:58:53,627 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 03:58:53,631 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 03:58:53,633 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 03:58:53,635 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 03:58:53,637 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 03:58:53,639 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 03:58:53,640 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 03:58:53,644 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 03:58:53,645 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 03:58:53,645 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 03:58:53,648 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 03:58:53,649 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 03:58:53,650 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 03:58:53,653 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 03:58:53,654 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 03:58:53,654 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 03:58:53,655 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 03:58:53,655 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 03:58:53,655 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 03:58:53,658 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 03:58:53,659 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 03:58:53,659 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-11-07 03:58:53,683 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 03:58:53,683 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 03:58:53,687 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 03:58:53,687 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 03:58:53,687 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 03:58:53,687 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 03:58:53,688 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 03:58:53,688 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 03:58:53,688 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 03:58:53,688 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 03:58:53,688 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 03:58:53,688 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 03:58:53,689 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 03:58:53,692 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 03:58:53,692 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 03:58:53,693 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 03:58:53,693 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 03:58:53,693 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 03:58:53,693 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 03:58:53,693 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 03:58:53,694 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 03:58:53,694 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 03:58:53,694 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 03:58:53,694 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 03:58:53,694 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 03:58:53,695 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 03:58:53,697 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 03:58:53,697 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 03:58:53,697 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 03:58:53,697 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 03:58:53,698 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 03:58:53,698 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 03:58:53,698 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 03:58:53,698 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 03:58:53,755 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 03:58:53,768 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 03:58:53,772 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 03:58:53,774 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 03:58:53,774 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 03:58:53,775 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label43_true-unreach-call.c [2018-11-07 03:58:53,833 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2850f8787/67241133ffaf4be98e628522aee095fd/FLAG1a47ac134 [2018-11-07 03:58:54,487 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 03:58:54,487 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label43_true-unreach-call.c [2018-11-07 03:58:54,510 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2850f8787/67241133ffaf4be98e628522aee095fd/FLAG1a47ac134 [2018-11-07 03:58:54,525 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2850f8787/67241133ffaf4be98e628522aee095fd [2018-11-07 03:58:54,536 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 03:58:54,538 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 03:58:54,539 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 03:58:54,539 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 03:58:54,543 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 03:58:54,544 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:58:54" (1/1) ... [2018-11-07 03:58:54,546 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a760589 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:58:54, skipping insertion in model container [2018-11-07 03:58:54,547 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 03:58:54" (1/1) ... [2018-11-07 03:58:54,558 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 03:58:54,662 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 03:58:55,670 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 03:58:55,676 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 03:58:56,116 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 03:58:56,138 INFO L193 MainTranslator]: Completed translation [2018-11-07 03:58:56,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:58:56 WrapperNode [2018-11-07 03:58:56,139 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 03:58:56,140 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 03:58:56,140 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 03:58:56,140 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 03:58:56,150 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:58:56" (1/1) ... [2018-11-07 03:58:56,406 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:58:56" (1/1) ... [2018-11-07 03:58:56,416 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 03:58:56,417 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 03:58:56,417 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 03:58:56,417 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 03:58:56,429 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:58:56" (1/1) ... [2018-11-07 03:58:56,429 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:58:56" (1/1) ... [2018-11-07 03:58:56,454 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:58:56" (1/1) ... [2018-11-07 03:58:56,455 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:58:56" (1/1) ... [2018-11-07 03:58:56,542 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:58:56" (1/1) ... [2018-11-07 03:58:56,577 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:58:56" (1/1) ... [2018-11-07 03:58:56,608 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:58:56" (1/1) ... [2018-11-07 03:58:56,629 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 03:58:56,630 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 03:58:56,630 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 03:58:56,630 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 03:58:56,631 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:58:56" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 03:58:56,702 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 03:58:56,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 03:58:56,702 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 03:58:56,702 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 03:58:56,703 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 03:58:56,703 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 03:58:56,703 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 03:58:56,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 03:58:56,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 03:58:56,703 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 03:58:56,704 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 03:59:05,248 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 03:59:05,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:59:05 BoogieIcfgContainer [2018-11-07 03:59:05,249 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 03:59:05,250 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 03:59:05,250 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 03:59:05,257 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 03:59:05,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 03:58:54" (1/3) ... [2018-11-07 03:59:05,258 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22f26a6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:59:05, skipping insertion in model container [2018-11-07 03:59:05,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 03:58:56" (2/3) ... [2018-11-07 03:59:05,258 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22f26a6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 03:59:05, skipping insertion in model container [2018-11-07 03:59:05,259 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 03:59:05" (3/3) ... [2018-11-07 03:59:05,261 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label43_true-unreach-call.c [2018-11-07 03:59:05,272 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 03:59:05,283 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 03:59:05,303 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 03:59:05,359 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 03:59:05,359 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 03:59:05,360 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 03:59:05,360 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 03:59:05,360 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 03:59:05,360 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 03:59:05,360 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 03:59:05,361 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 03:59:05,417 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-11-07 03:59:05,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-11-07 03:59:05,430 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:59:05,432 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] [2018-11-07 03:59:05,436 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:59:05,442 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:59:05,443 INFO L82 PathProgramCache]: Analyzing trace with hash 1064773166, now seen corresponding path program 1 times [2018-11-07 03:59:05,447 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:59:05,500 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:59:05,501 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:59:05,501 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:59:05,501 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:59:05,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:59:06,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:59:06,046 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 03:59:06,047 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 03:59:06,047 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:59:06,053 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 03:59:06,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 03:59:06,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 03:59:06,074 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-11-07 03:59:14,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 03:59:14,190 INFO L93 Difference]: Finished difference Result 2118 states and 3937 transitions. [2018-11-07 03:59:14,190 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 03:59:14,191 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 69 [2018-11-07 03:59:14,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 03:59:14,220 INFO L225 Difference]: With dead ends: 2118 [2018-11-07 03:59:14,221 INFO L226 Difference]: Without dead ends: 1508 [2018-11-07 03:59:14,234 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 03:59:14,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1508 states. [2018-11-07 03:59:14,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1508 to 1039. [2018-11-07 03:59:14,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1039 states. [2018-11-07 03:59:14,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 1596 transitions. [2018-11-07 03:59:14,368 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 1596 transitions. Word has length 69 [2018-11-07 03:59:14,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 03:59:14,369 INFO L480 AbstractCegarLoop]: Abstraction has 1039 states and 1596 transitions. [2018-11-07 03:59:14,369 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 03:59:14,370 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 1596 transitions. [2018-11-07 03:59:14,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-11-07 03:59:14,378 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 03:59:14,379 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 03:59:14,379 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 03:59:14,379 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:59:14,380 INFO L82 PathProgramCache]: Analyzing trace with hash -213445479, now seen corresponding path program 1 times [2018-11-07 03:59:14,380 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 03:59:14,381 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:59:14,381 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:59:14,381 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 03:59:14,382 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 03:59:14,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:59:14,793 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 62 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:59:14,793 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 03:59:14,793 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 03:59:14,795 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 145 with the following transitions: [2018-11-07 03:59:14,797 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1030], [1038], [1046], [1054], [1062], [1070], [1078], [1086], [1094], [1102], [1110], [1118], [1126], [1134], [1142], [1150], [1158], [1162], [1164], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-07 03:59:14,869 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 03:59:14,869 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 03:59:16,330 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 03:59:38,164 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 03:59:38,166 INFO L272 AbstractInterpreter]: Visited 83 different actions 543 times. Merged at 5 different actions 30 times. Widened at 1 different actions 2 times. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-07 03:59:38,181 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 03:59:38,182 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 03:59:38,182 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 03:59:38,182 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-07 03:59:38,194 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 03:59:38,195 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 03:59:38,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 03:59:38,283 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 03:59:40,882 WARN L179 SmtUtils]: Spent 2.17 s on a formula simplification that was a NOOP. DAG size: 42 [2018-11-07 03:59:41,036 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 4 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:59:41,036 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 03:59:44,235 WARN L179 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 25 [2018-11-07 03:59:44,623 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 03:59:44,656 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-11-07 03:59:44,656 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 13 [2018-11-07 03:59:44,656 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 03:59:44,657 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 03:59:44,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 03:59:44,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=110, Unknown=1, NotChecked=0, Total=156 [2018-11-07 03:59:44,659 INFO L87 Difference]: Start difference. First operand 1039 states and 1596 transitions. Second operand 6 states. [2018-11-07 04:00:06,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 04:00:06,305 INFO L93 Difference]: Finished difference Result 3453 states and 5550 transitions. [2018-11-07 04:00:06,311 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 04:00:06,311 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 144 [2018-11-07 04:00:06,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 04:00:06,327 INFO L225 Difference]: With dead ends: 3453 [2018-11-07 04:00:06,328 INFO L226 Difference]: Without dead ends: 2420 [2018-11-07 04:00:06,335 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 283 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=45, Invalid=110, Unknown=1, NotChecked=0, Total=156 [2018-11-07 04:00:06,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2420 states. [2018-11-07 04:00:06,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2420 to 2412. [2018-11-07 04:00:06,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2412 states. [2018-11-07 04:00:06,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2412 states to 2412 states and 3754 transitions. [2018-11-07 04:00:06,418 INFO L78 Accepts]: Start accepts. Automaton has 2412 states and 3754 transitions. Word has length 144 [2018-11-07 04:00:06,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 04:00:06,419 INFO L480 AbstractCegarLoop]: Abstraction has 2412 states and 3754 transitions. [2018-11-07 04:00:06,420 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 04:00:06,420 INFO L276 IsEmpty]: Start isEmpty. Operand 2412 states and 3754 transitions. [2018-11-07 04:00:06,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2018-11-07 04:00:06,426 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 04:00:06,426 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 04:00:06,426 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 04:00:06,427 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 04:00:06,427 INFO L82 PathProgramCache]: Analyzing trace with hash -1594999713, now seen corresponding path program 1 times [2018-11-07 04:00:06,427 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 04:00:06,428 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:00:06,428 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 04:00:06,428 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:00:06,428 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 04:00:06,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 04:00:06,832 WARN L179 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 04:00:06,925 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 56 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 04:00:06,926 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 04:00:06,926 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 04:00:06,926 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 158 with the following transitions: [2018-11-07 04:00:06,927 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1030], [1038], [1046], [1054], [1062], [1070], [1078], [1086], [1094], [1102], [1110], [1118], [1126], [1134], [1142], [1150], [1158], [1162], [1164], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-07 04:00:06,933 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 04:00:06,933 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 04:00:08,760 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 04:00:18,110 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 04:00:18,110 INFO L272 AbstractInterpreter]: Visited 96 different actions 274 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-07 04:00:18,144 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 04:00:18,145 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 04:00:18,145 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 04:00:18,145 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-07 04:00:18,162 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 04:00:18,162 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 04:00:18,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 04:00:18,257 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 04:00:18,434 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 04:00:18,434 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 04:00:18,799 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 04:00:18,832 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-11-07 04:00:18,832 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 8 [2018-11-07 04:00:18,832 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 04:00:18,833 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 04:00:18,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 04:00:18,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-07 04:00:18,836 INFO L87 Difference]: Start difference. First operand 2412 states and 3754 transitions. Second operand 3 states. [2018-11-07 04:00:23,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 04:00:23,152 INFO L93 Difference]: Finished difference Result 6995 states and 11104 transitions. [2018-11-07 04:00:23,156 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 04:00:23,156 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 157 [2018-11-07 04:00:23,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 04:00:23,187 INFO L225 Difference]: With dead ends: 6995 [2018-11-07 04:00:23,187 INFO L226 Difference]: Without dead ends: 4589 [2018-11-07 04:00:23,200 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 323 GetRequests, 313 SyntacticMatches, 4 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-07 04:00:23,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4589 states. [2018-11-07 04:00:23,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4589 to 4588. [2018-11-07 04:00:23,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4588 states. [2018-11-07 04:00:23,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4588 states to 4588 states and 7097 transitions. [2018-11-07 04:00:23,329 INFO L78 Accepts]: Start accepts. Automaton has 4588 states and 7097 transitions. Word has length 157 [2018-11-07 04:00:23,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 04:00:23,330 INFO L480 AbstractCegarLoop]: Abstraction has 4588 states and 7097 transitions. [2018-11-07 04:00:23,330 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 04:00:23,330 INFO L276 IsEmpty]: Start isEmpty. Operand 4588 states and 7097 transitions. [2018-11-07 04:00:23,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2018-11-07 04:00:23,336 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 04:00:23,336 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 04:00:23,336 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 04:00:23,337 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 04:00:23,337 INFO L82 PathProgramCache]: Analyzing trace with hash -963850834, now seen corresponding path program 1 times [2018-11-07 04:00:23,337 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 04:00:23,338 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:00:23,338 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 04:00:23,338 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:00:23,338 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 04:00:23,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 04:00:23,618 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 125 proven. 7 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-11-07 04:00:23,619 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 04:00:23,619 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 04:00:23,619 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 235 with the following transitions: [2018-11-07 04:00:23,620 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1030], [1038], [1046], [1054], [1062], [1070], [1078], [1086], [1094], [1102], [1110], [1118], [1126], [1134], [1142], [1150], [1158], [1162], [1164], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1283], [1287], [1290], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-07 04:00:23,625 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 04:00:23,626 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 04:00:24,267 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 04:00:43,311 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 04:00:43,311 INFO L272 AbstractInterpreter]: Visited 99 different actions 562 times. Merged at 5 different actions 25 times. Widened at 1 different actions 1 times. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-07 04:00:43,316 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 04:00:43,316 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 04:00:43,316 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 04:00:43,316 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 04:00:43,330 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 04:00:43,330 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 04:00:43,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 04:00:43,403 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 04:00:43,665 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 197 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 04:00:43,665 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 04:00:43,904 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 197 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 04:00:43,924 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 04:00:43,925 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-11-07 04:00:43,925 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 04:00:43,926 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 04:00:43,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 04:00:43,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-11-07 04:00:43,926 INFO L87 Difference]: Start difference. First operand 4588 states and 7097 transitions. Second operand 9 states. [2018-11-07 04:00:50,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 04:00:50,762 INFO L93 Difference]: Finished difference Result 11486 states and 17894 transitions. [2018-11-07 04:00:50,763 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-07 04:00:50,763 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 234 [2018-11-07 04:00:50,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 04:00:50,794 INFO L225 Difference]: With dead ends: 11486 [2018-11-07 04:00:50,795 INFO L226 Difference]: Without dead ends: 6418 [2018-11-07 04:00:50,813 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 485 GetRequests, 466 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=101, Invalid=205, Unknown=0, NotChecked=0, Total=306 [2018-11-07 04:00:50,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6418 states. [2018-11-07 04:00:50,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6418 to 6406. [2018-11-07 04:00:50,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6406 states. [2018-11-07 04:00:50,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6406 states to 6406 states and 7901 transitions. [2018-11-07 04:00:50,983 INFO L78 Accepts]: Start accepts. Automaton has 6406 states and 7901 transitions. Word has length 234 [2018-11-07 04:00:50,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 04:00:50,983 INFO L480 AbstractCegarLoop]: Abstraction has 6406 states and 7901 transitions. [2018-11-07 04:00:50,984 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-07 04:00:50,984 INFO L276 IsEmpty]: Start isEmpty. Operand 6406 states and 7901 transitions. [2018-11-07 04:00:50,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2018-11-07 04:00:50,988 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 04:00:50,988 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 04:00:50,988 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 04:00:50,988 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 04:00:50,989 INFO L82 PathProgramCache]: Analyzing trace with hash -1177890901, now seen corresponding path program 1 times [2018-11-07 04:00:50,989 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 04:00:50,989 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:00:50,993 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 04:00:50,994 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:00:50,994 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 04:00:51,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 04:00:51,227 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-11-07 04:00:51,228 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 04:00:51,228 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 04:00:51,228 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 04:00:51,229 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 04:00:51,229 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 04:00:51,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 04:00:51,229 INFO L87 Difference]: Start difference. First operand 6406 states and 7901 transitions. Second operand 3 states. [2018-11-07 04:00:54,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 04:00:54,525 INFO L93 Difference]: Finished difference Result 17165 states and 21197 transitions. [2018-11-07 04:00:54,531 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 04:00:54,531 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 246 [2018-11-07 04:00:54,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 04:00:54,568 INFO L225 Difference]: With dead ends: 17165 [2018-11-07 04:00:54,568 INFO L226 Difference]: Without dead ends: 8928 [2018-11-07 04:00:54,596 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 04:00:54,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8928 states. [2018-11-07 04:00:54,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8928 to 8488. [2018-11-07 04:00:54,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8488 states. [2018-11-07 04:00:54,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8488 states to 8488 states and 10056 transitions. [2018-11-07 04:00:54,773 INFO L78 Accepts]: Start accepts. Automaton has 8488 states and 10056 transitions. Word has length 246 [2018-11-07 04:00:54,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 04:00:54,774 INFO L480 AbstractCegarLoop]: Abstraction has 8488 states and 10056 transitions. [2018-11-07 04:00:54,774 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 04:00:54,774 INFO L276 IsEmpty]: Start isEmpty. Operand 8488 states and 10056 transitions. [2018-11-07 04:00:54,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2018-11-07 04:00:54,781 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 04:00:54,782 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 04:00:54,782 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 04:00:54,782 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 04:00:54,783 INFO L82 PathProgramCache]: Analyzing trace with hash -862340150, now seen corresponding path program 1 times [2018-11-07 04:00:54,783 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 04:00:54,784 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:00:54,784 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 04:00:54,784 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:00:54,784 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 04:00:54,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 04:00:55,240 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 129 proven. 2 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2018-11-07 04:00:55,241 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 04:00:55,241 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 04:00:55,241 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 318 with the following transitions: [2018-11-07 04:00:55,242 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1030], [1038], [1046], [1054], [1062], [1070], [1078], [1086], [1094], [1102], [1110], [1118], [1126], [1134], [1142], [1150], [1158], [1162], [1164], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1654], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-07 04:00:55,249 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 04:00:55,249 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 04:00:56,324 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 04:02:13,648 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 04:02:13,648 INFO L272 AbstractInterpreter]: Visited 169 different actions 1329 times. Merged at 7 different actions 55 times. Widened at 1 different actions 2 times. Found 8 fixpoints after 2 different actions. Largest state had 26 variables. [2018-11-07 04:02:13,655 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 04:02:13,655 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 04:02:13,655 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 04:02:13,655 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-07 04:02:13,664 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 04:02:13,664 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 04:02:13,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 04:02:13,763 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 04:02:14,171 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 17 [2018-11-07 04:02:14,314 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 129 proven. 2 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2018-11-07 04:02:14,314 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 04:02:15,075 INFO L134 CoverageAnalysis]: Checked inductivity of 212 backedges. 129 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 04:02:15,095 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 04:02:15,095 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8] total 16 [2018-11-07 04:02:15,095 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 04:02:15,096 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 04:02:15,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 04:02:15,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2018-11-07 04:02:15,097 INFO L87 Difference]: Start difference. First operand 8488 states and 10056 transitions. Second operand 10 states. [2018-11-07 04:02:24,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 04:02:24,370 INFO L93 Difference]: Finished difference Result 29441 states and 35810 transitions. [2018-11-07 04:02:24,370 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-07 04:02:24,370 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 317 [2018-11-07 04:02:24,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 04:02:24,433 INFO L225 Difference]: With dead ends: 29441 [2018-11-07 04:02:24,434 INFO L226 Difference]: Without dead ends: 20515 [2018-11-07 04:02:24,463 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 650 GetRequests, 627 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=160, Invalid=392, Unknown=0, NotChecked=0, Total=552 [2018-11-07 04:02:24,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20515 states. [2018-11-07 04:02:24,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20515 to 17398. [2018-11-07 04:02:24,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17398 states. [2018-11-07 04:02:24,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17398 states to 17398 states and 20571 transitions. [2018-11-07 04:02:24,843 INFO L78 Accepts]: Start accepts. Automaton has 17398 states and 20571 transitions. Word has length 317 [2018-11-07 04:02:24,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 04:02:24,844 INFO L480 AbstractCegarLoop]: Abstraction has 17398 states and 20571 transitions. [2018-11-07 04:02:24,844 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-07 04:02:24,844 INFO L276 IsEmpty]: Start isEmpty. Operand 17398 states and 20571 transitions. [2018-11-07 04:02:24,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 426 [2018-11-07 04:02:24,858 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 04:02:24,858 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-07 04:02:24,859 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 04:02:24,859 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 04:02:24,859 INFO L82 PathProgramCache]: Analyzing trace with hash -1394066486, now seen corresponding path program 1 times [2018-11-07 04:02:24,859 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 04:02:24,860 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:02:24,860 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 04:02:24,861 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 04:02:24,861 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 04:02:24,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 04:02:25,536 INFO L134 CoverageAnalysis]: Checked inductivity of 470 backedges. 192 proven. 192 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2018-11-07 04:02:25,537 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 04:02:25,537 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 04:02:25,537 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 426 with the following transitions: [2018-11-07 04:02:25,537 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1030], [1038], [1046], [1054], [1062], [1070], [1078], [1086], [1094], [1102], [1110], [1118], [1126], [1134], [1142], [1150], [1158], [1162], [1164], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [1283], [1287], [1291], [1295], [1299], [1303], [1307], [1318], [1322], [1326], [1330], [1334], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1376], [1377], [1381], [1385], [1389], [1393], [1397], [1401], [1405], [1409], [1413], [1417], [1428], [1432], [1436], [1440], [1451], [1455], [1459], [1463], [1467], [1471], [1475], [1479], [1490], [1501], [1505], [1516], [1520], [1524], [1528], [1532], [1536], [1540], [1544], [1548], [1559], [1563], [1567], [1578], [1582], [1593], [1597], [1601], [1612], [1623], [1627], [1631], [1635], [1639], [1643], [1647], [1651], [1654], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-07 04:02:25,543 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 04:02:25,543 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 04:02:27,549 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-11-07 04:02:52,930 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-11-07 04:02:52,931 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-11-07 04:02:52,932 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-07 04:02:52,932 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 04:02:52,932 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-07 04:02:52,943 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 04:02:52,943 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 04:02:53,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 04:02:53,058 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 04:02:53,066 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-11-07 04:02:53,267 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 04:02:53,267 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 04:02:53,272 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 04:02:53,272 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 04:02:53 BoogieIcfgContainer [2018-11-07 04:02:53,272 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 04:02:53,273 INFO L168 Benchmark]: Toolchain (without parser) took 238736.75 ms. Allocated memory was 1.5 GB in the beginning and 4.3 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 2.7 GB in the end (delta: -1.3 GB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-11-07 04:02:53,275 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 04:02:53,282 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1600.82 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: 140.1 MB). Peak memory consumption was 140.1 MB. Max. memory is 7.1 GB. [2018-11-07 04:02:53,283 INFO L168 Benchmark]: Boogie Procedure Inliner took 276.73 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 796.4 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -979.4 MB). Peak memory consumption was 42.4 MB. Max. memory is 7.1 GB. [2018-11-07 04:02:53,284 INFO L168 Benchmark]: Boogie Preprocessor took 212.73 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. [2018-11-07 04:02:53,289 INFO L168 Benchmark]: RCFGBuilder took 8619.46 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 1.8 GB in the end (delta: 452.1 MB). Peak memory consumption was 452.1 MB. Max. memory is 7.1 GB. [2018-11-07 04:02:53,290 INFO L168 Benchmark]: TraceAbstraction took 228022.34 ms. Allocated memory was 2.3 GB in the beginning and 4.3 GB in the end (delta: 1.9 GB). Free memory was 1.8 GB in the beginning and 2.7 GB in the end (delta: -946.6 MB). Peak memory consumption was 977.5 MB. Max. memory is 7.1 GB. [2018-11-07 04:02:53,301 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1600.82 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: 140.1 MB). Peak memory consumption was 140.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 276.73 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 796.4 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -979.4 MB). Peak memory consumption was 42.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 212.73 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8619.46 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 1.8 GB in the end (delta: 452.1 MB). Peak memory consumption was 452.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 228022.34 ms. Allocated memory was 2.3 GB in the beginning and 4.3 GB in the end (delta: 1.9 GB). Free memory was 1.8 GB in the beginning and 2.7 GB in the end (delta: -946.6 MB). Peak memory consumption was 977.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 194]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 194). Cancelled while BasicCegarLoop was analyzing trace of length 426 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while XnfDer was eliminating 1 quantified variables from 1 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 227.9s OverallTime, 7 OverallIterations, 4 TraceHistogramMax, 53.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2652 SDtfs, 13128 SDslu, 1480 SDs, 0 SdLazy, 19697 SolverSat, 5624 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 46.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1765 GetRequests, 1697 SyntacticMatches, 10 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 8.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17398occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 160.1s AbstIntTime, 5 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 4047 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 10.5s InterpolantComputationTime, 2019 NumberOfCodeBlocks, 2019 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 2857 ConstructedInterpolants, 173 QuantifiedInterpolants, 3163182 SizeOfPredicates, 8 NumberOfNonLiveVariables, 1546 ConjunctsInSsa, 27 ConjunctsInUnsatCore, 14 InterpolantComputations, 5 PerfectInterpolantSequences, 1593/1817 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown