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-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label11_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 07:26:46,681 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 07:26:46,684 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 07:26:46,696 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 07:26:46,696 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 07:26:46,698 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 07:26:46,699 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 07:26:46,701 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 07:26:46,703 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 07:26:46,703 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 07:26:46,704 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 07:26:46,704 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 07:26:46,705 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 07:26:46,707 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 07:26:46,708 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 07:26:46,709 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 07:26:46,709 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 07:26:46,711 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 07:26:46,718 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 07:26:46,720 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 07:26:46,721 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 07:26:46,725 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 07:26:46,731 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 07:26:46,731 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 07:26:46,731 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 07:26:46,733 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 07:26:46,734 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 07:26:46,735 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 07:26:46,736 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 07:26:46,737 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 07:26:46,737 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 07:26:46,738 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 07:26:46,738 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 07:26:46,738 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 07:26:46,739 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 07:26:46,740 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 07:26:46,740 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-10-27 07:26:46,755 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 07:26:46,756 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 07:26:46,756 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 07:26:46,757 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 07:26:46,757 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 07:26:46,757 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 07:26:46,757 INFO L133 SettingsManager]: * Explicit value domain=true [2018-10-27 07:26:46,757 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 07:26:46,758 INFO L133 SettingsManager]: * Octagon Domain=false [2018-10-27 07:26:46,758 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 07:26:46,758 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 07:26:46,758 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 07:26:46,758 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 07:26:46,759 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 07:26:46,759 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 07:26:46,759 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 07:26:46,760 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 07:26:46,760 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 07:26:46,760 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 07:26:46,760 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 07:26:46,760 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 07:26:46,761 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 07:26:46,761 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 07:26:46,761 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 07:26:46,761 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 07:26:46,761 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 07:26:46,762 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 07:26:46,762 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 07:26:46,762 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 07:26:46,762 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 07:26:46,762 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 07:26:46,763 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 07:26:46,763 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 07:26:46,763 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 07:26:46,763 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 07:26:46,763 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 07:26:46,818 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 07:26:46,833 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 07:26:46,838 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 07:26:46,840 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 07:26:46,840 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 07:26:46,842 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label11_true-unreach-call.c [2018-10-27 07:26:46,914 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b6af10553/340bb8d7eb9442fdafa51cbae7f05dc4/FLAGce9c07bde [2018-10-27 07:26:47,550 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 07:26:47,551 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label11_true-unreach-call.c [2018-10-27 07:26:47,563 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b6af10553/340bb8d7eb9442fdafa51cbae7f05dc4/FLAGce9c07bde [2018-10-27 07:26:47,583 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b6af10553/340bb8d7eb9442fdafa51cbae7f05dc4 [2018-10-27 07:26:47,595 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 07:26:47,596 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 07:26:47,598 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 07:26:47,598 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 07:26:47,602 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 07:26:47,603 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:26:47" (1/1) ... [2018-10-27 07:26:47,606 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@46dcfc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:26:47, skipping insertion in model container [2018-10-27 07:26:47,607 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:26:47" (1/1) ... [2018-10-27 07:26:47,617 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 07:26:47,686 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 07:26:48,104 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 07:26:48,109 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 07:26:48,286 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 07:26:48,312 INFO L193 MainTranslator]: Completed translation [2018-10-27 07:26:48,312 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:26:48 WrapperNode [2018-10-27 07:26:48,312 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 07:26:48,314 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 07:26:48,314 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 07:26:48,314 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 07:26:48,324 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:26:48" (1/1) ... [2018-10-27 07:26:48,345 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:26:48" (1/1) ... [2018-10-27 07:26:48,558 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 07:26:48,559 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 07:26:48,559 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 07:26:48,559 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 07:26:48,570 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:26:48" (1/1) ... [2018-10-27 07:26:48,570 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:26:48" (1/1) ... [2018-10-27 07:26:48,587 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:26:48" (1/1) ... [2018-10-27 07:26:48,591 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:26:48" (1/1) ... [2018-10-27 07:26:48,619 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:26:48" (1/1) ... [2018-10-27 07:26:48,635 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:26:48" (1/1) ... [2018-10-27 07:26:48,645 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:26:48" (1/1) ... [2018-10-27 07:26:48,657 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 07:26:48,658 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 07:26:48,658 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 07:26:48,658 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 07:26:48,660 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:26:48" (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 07:26:48,732 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 07:26:48,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 07:26:48,733 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 07:26:48,733 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 07:26:48,733 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 07:26:48,733 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 07:26:48,734 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 07:26:48,734 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 07:26:51,882 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 07:26:51,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:26:51 BoogieIcfgContainer [2018-10-27 07:26:51,883 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 07:26:51,884 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 07:26:51,885 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 07:26:51,888 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 07:26:51,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 07:26:47" (1/3) ... [2018-10-27 07:26:51,889 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@af2ef3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:26:51, skipping insertion in model container [2018-10-27 07:26:51,889 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:26:48" (2/3) ... [2018-10-27 07:26:51,890 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@af2ef3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:26:51, skipping insertion in model container [2018-10-27 07:26:51,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:26:51" (3/3) ... [2018-10-27 07:26:51,892 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem10_label11_true-unreach-call.c [2018-10-27 07:26:51,902 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 07:26:51,911 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 07:26:51,929 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 07:26:51,978 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 07:26:51,978 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 07:26:51,978 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 07:26:51,978 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 07:26:51,978 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 07:26:51,980 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 07:26:51,980 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 07:26:51,980 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 07:26:52,026 INFO L276 IsEmpty]: Start isEmpty. Operand 216 states. [2018-10-27 07:26:52,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-10-27 07:26:52,037 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:26:52,038 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] [2018-10-27 07:26:52,040 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:26:52,046 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:26:52,047 INFO L82 PathProgramCache]: Analyzing trace with hash 1604912700, now seen corresponding path program 1 times [2018-10-27 07:26:52,049 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:26:52,102 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:26:52,102 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:26:52,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:26:52,103 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:26:52,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:26:52,624 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 07:26:52,706 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 07:26:52,709 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 07:26:52,709 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 07:26:52,710 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:26:52,717 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 07:26:52,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 07:26:52,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 07:26:52,736 INFO L87 Difference]: Start difference. First operand 216 states. Second operand 3 states. [2018-10-27 07:26:54,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:26:54,526 INFO L93 Difference]: Finished difference Result 574 states and 992 transitions. [2018-10-27 07:26:54,528 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 07:26:54,529 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 68 [2018-10-27 07:26:54,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:26:54,548 INFO L225 Difference]: With dead ends: 574 [2018-10-27 07:26:54,549 INFO L226 Difference]: Without dead ends: 356 [2018-10-27 07:26:54,557 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 07:26:54,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2018-10-27 07:26:54,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 356. [2018-10-27 07:26:54,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356 states. [2018-10-27 07:26:54,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 609 transitions. [2018-10-27 07:26:54,636 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 609 transitions. Word has length 68 [2018-10-27 07:26:54,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:26:54,637 INFO L481 AbstractCegarLoop]: Abstraction has 356 states and 609 transitions. [2018-10-27 07:26:54,637 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 07:26:54,638 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 609 transitions. [2018-10-27 07:26:54,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-10-27 07:26:54,649 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:26:54,650 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:26:54,650 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:26:54,651 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:26:54,651 INFO L82 PathProgramCache]: Analyzing trace with hash 633419456, now seen corresponding path program 1 times [2018-10-27 07:26:54,651 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:26:54,652 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:26:54,652 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:26:54,653 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:26:54,653 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:26:54,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:26:55,133 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:26:55,133 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 07:26:55,134 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 07:26:55,134 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:26:55,136 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 07:26:55,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 07:26:55,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 07:26:55,137 INFO L87 Difference]: Start difference. First operand 356 states and 609 transitions. Second operand 5 states. [2018-10-27 07:26:58,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:26:58,925 INFO L93 Difference]: Finished difference Result 1140 states and 2022 transitions. [2018-10-27 07:26:58,926 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 07:26:58,926 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 188 [2018-10-27 07:26:58,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:26:58,936 INFO L225 Difference]: With dead ends: 1140 [2018-10-27 07:26:58,936 INFO L226 Difference]: Without dead ends: 790 [2018-10-27 07:26:58,942 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-10-27 07:26:58,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 790 states. [2018-10-27 07:26:58,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 790 to 784. [2018-10-27 07:26:58,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 784 states. [2018-10-27 07:26:59,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1300 transitions. [2018-10-27 07:26:59,005 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1300 transitions. Word has length 188 [2018-10-27 07:26:59,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:26:59,006 INFO L481 AbstractCegarLoop]: Abstraction has 784 states and 1300 transitions. [2018-10-27 07:26:59,006 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 07:26:59,006 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1300 transitions. [2018-10-27 07:26:59,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2018-10-27 07:26:59,013 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:26:59,013 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:26:59,014 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:26:59,014 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:26:59,014 INFO L82 PathProgramCache]: Analyzing trace with hash 1277434075, now seen corresponding path program 1 times [2018-10-27 07:26:59,014 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:26:59,016 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:26:59,016 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:26:59,016 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:26:59,016 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:26:59,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:26:59,329 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 07:26:59,779 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:26:59,779 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 07:26:59,779 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 07:26:59,779 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:26:59,780 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 07:26:59,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 07:26:59,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 07:26:59,781 INFO L87 Difference]: Start difference. First operand 784 states and 1300 transitions. Second operand 6 states. [2018-10-27 07:27:04,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:27:04,759 INFO L93 Difference]: Finished difference Result 1975 states and 3367 transitions. [2018-10-27 07:27:04,759 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 07:27:04,759 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 195 [2018-10-27 07:27:04,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:27:04,768 INFO L225 Difference]: With dead ends: 1975 [2018-10-27 07:27:04,768 INFO L226 Difference]: Without dead ends: 1197 [2018-10-27 07:27:04,774 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 07:27:04,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1197 states. [2018-10-27 07:27:04,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1197 to 1177. [2018-10-27 07:27:04,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1177 states. [2018-10-27 07:27:04,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1177 states to 1177 states and 1754 transitions. [2018-10-27 07:27:04,814 INFO L78 Accepts]: Start accepts. Automaton has 1177 states and 1754 transitions. Word has length 195 [2018-10-27 07:27:04,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:27:04,815 INFO L481 AbstractCegarLoop]: Abstraction has 1177 states and 1754 transitions. [2018-10-27 07:27:04,815 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 07:27:04,815 INFO L276 IsEmpty]: Start isEmpty. Operand 1177 states and 1754 transitions. [2018-10-27 07:27:04,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2018-10-27 07:27:04,823 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:27:04,823 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 07:27:04,823 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:27:04,824 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:27:04,824 INFO L82 PathProgramCache]: Analyzing trace with hash -1200598705, now seen corresponding path program 1 times [2018-10-27 07:27:04,824 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:27:04,825 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:27:04,825 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:27:04,826 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:27:04,826 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:27:04,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:27:05,304 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-10-27 07:27:05,736 WARN L179 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 33 [2018-10-27 07:27:05,924 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 191 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:27:05,924 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 07:27:05,924 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 07:27:05,926 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 260 with the following transitions: [2018-10-27 07:27:05,928 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [445], [447], [450], [458], [466], [474], [482], [490], [495], [498], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [679], [683], [687], [691], [694], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-10-27 07:27:05,975 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 07:27:05,975 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 07:27:07,236 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 07:27:07,238 INFO L272 AbstractInterpreter]: Visited 129 different actions 500 times. Merged at 7 different actions 20 times. Never widened. Found 4 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-27 07:27:07,284 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:27:07,286 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 07:27:07,286 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 07:27:07,286 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 07:27:07,304 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:27:07,305 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 07:27:07,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:27:07,448 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 07:27:08,081 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 191 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:27:08,081 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 07:27:08,473 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 191 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:27:08,496 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 07:27:08,496 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 5, 5] total 17 [2018-10-27 07:27:08,496 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 07:27:08,497 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-27 07:27:08,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-27 07:27:08,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2018-10-27 07:27:08,498 INFO L87 Difference]: Start difference. First operand 1177 states and 1754 transitions. Second operand 16 states. [2018-10-27 07:27:09,123 WARN L179 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 21 [2018-10-27 07:27:14,137 WARN L179 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 26 [2018-10-27 07:27:14,344 WARN L179 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 29 [2018-10-27 07:27:17,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:27:17,717 INFO L93 Difference]: Finished difference Result 3810 states and 6145 transitions. [2018-10-27 07:27:17,717 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-10-27 07:27:17,717 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 259 [2018-10-27 07:27:17,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:27:17,739 INFO L225 Difference]: With dead ends: 3810 [2018-10-27 07:27:17,739 INFO L226 Difference]: Without dead ends: 2639 [2018-10-27 07:27:17,754 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 583 GetRequests, 529 SyntacticMatches, 3 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 686 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=654, Invalid=2102, Unknown=0, NotChecked=0, Total=2756 [2018-10-27 07:27:17,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2639 states. [2018-10-27 07:27:17,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2639 to 2321. [2018-10-27 07:27:17,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2321 states. [2018-10-27 07:27:17,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2321 states to 2321 states and 3108 transitions. [2018-10-27 07:27:17,847 INFO L78 Accepts]: Start accepts. Automaton has 2321 states and 3108 transitions. Word has length 259 [2018-10-27 07:27:17,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:27:17,848 INFO L481 AbstractCegarLoop]: Abstraction has 2321 states and 3108 transitions. [2018-10-27 07:27:17,848 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-27 07:27:17,848 INFO L276 IsEmpty]: Start isEmpty. Operand 2321 states and 3108 transitions. [2018-10-27 07:27:17,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2018-10-27 07:27:17,859 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:27:17,859 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, 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] [2018-10-27 07:27:17,860 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:27:17,860 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:27:17,860 INFO L82 PathProgramCache]: Analyzing trace with hash -1468713688, now seen corresponding path program 1 times [2018-10-27 07:27:17,861 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:27:17,862 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:27:17,862 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:27:17,862 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:27:17,862 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:27:17,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:27:18,368 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 200 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:27:18,369 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 07:27:18,369 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 07:27:18,370 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 275 with the following transitions: [2018-10-27 07:27:18,370 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [445], [447], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [534], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [718], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-10-27 07:27:18,382 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 07:27:18,382 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 07:27:18,730 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 07:27:18,730 INFO L272 AbstractInterpreter]: Visited 135 different actions 268 times. Merged at 7 different actions 10 times. Never widened. Found 2 fixpoints after 2 different actions. Largest state had 24 variables. [2018-10-27 07:27:18,772 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:27:18,772 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 07:27:18,772 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 07:27:18,773 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 07:27:18,789 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:27:18,789 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 07:27:18,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:27:18,892 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 07:27:19,064 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 200 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:27:19,064 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 07:27:19,277 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 200 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:27:19,299 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 07:27:19,299 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-10-27 07:27:19,299 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 07:27:19,300 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-27 07:27:19,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-27 07:27:19,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2018-10-27 07:27:19,301 INFO L87 Difference]: Start difference. First operand 2321 states and 3108 transitions. Second operand 9 states. [2018-10-27 07:27:22,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:27:22,914 INFO L93 Difference]: Finished difference Result 6950 states and 10487 transitions. [2018-10-27 07:27:22,915 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-10-27 07:27:22,915 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 274 [2018-10-27 07:27:22,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:27:22,927 INFO L225 Difference]: With dead ends: 6950 [2018-10-27 07:27:22,927 INFO L226 Difference]: Without dead ends: 1803 [2018-10-27 07:27:22,990 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 569 GetRequests, 551 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=114, Invalid=228, Unknown=0, NotChecked=0, Total=342 [2018-10-27 07:27:22,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1803 states. [2018-10-27 07:27:23,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1803 to 1637. [2018-10-27 07:27:23,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1637 states. [2018-10-27 07:27:23,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1637 states to 1637 states and 2042 transitions. [2018-10-27 07:27:23,051 INFO L78 Accepts]: Start accepts. Automaton has 1637 states and 2042 transitions. Word has length 274 [2018-10-27 07:27:23,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:27:23,051 INFO L481 AbstractCegarLoop]: Abstraction has 1637 states and 2042 transitions. [2018-10-27 07:27:23,051 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-10-27 07:27:23,052 INFO L276 IsEmpty]: Start isEmpty. Operand 1637 states and 2042 transitions. [2018-10-27 07:27:23,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2018-10-27 07:27:23,060 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:27:23,061 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 07:27:23,061 INFO L424 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:27:23,061 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:27:23,062 INFO L82 PathProgramCache]: Analyzing trace with hash -220726540, now seen corresponding path program 1 times [2018-10-27 07:27:23,062 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:27:23,063 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:27:23,063 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:27:23,063 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:27:23,063 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:27:23,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:27:23,320 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 07:27:23,749 INFO L134 CoverageAnalysis]: Checked inductivity of 218 backedges. 122 proven. 91 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 07:27:23,749 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 07:27:23,750 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 07:27:23,750 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 285 with the following transitions: [2018-10-27 07:27:23,751 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [445], [447], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [598], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [679], [683], [687], [691], [694], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-10-27 07:27:23,760 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 07:27:23,760 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 07:27:23,906 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 07:27:23,906 INFO L272 AbstractInterpreter]: Visited 125 different actions 125 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-27 07:27:23,943 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:27:23,943 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 07:27:24,475 INFO L227 lantSequenceWeakener]: Weakened 275 states. On average, predicates are now at 73.51% of their original sizes. [2018-10-27 07:27:24,476 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 07:27:24,752 INFO L415 sIntCurrentIteration]: We unified 283 AI predicates to 283 [2018-10-27 07:27:24,752 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 07:27:24,753 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 07:27:24,753 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2018-10-27 07:27:24,753 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:27:24,754 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 07:27:24,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 07:27:24,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 07:27:24,755 INFO L87 Difference]: Start difference. First operand 1637 states and 2042 transitions. Second operand 6 states. [2018-10-27 07:27:42,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:27:42,393 INFO L93 Difference]: Finished difference Result 2990 states and 3753 transitions. [2018-10-27 07:27:42,393 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-27 07:27:42,393 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 284 [2018-10-27 07:27:42,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:27:42,402 INFO L225 Difference]: With dead ends: 2990 [2018-10-27 07:27:42,402 INFO L226 Difference]: Without dead ends: 1639 [2018-10-27 07:27:42,406 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 284 GetRequests, 279 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-10-27 07:27:42,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1639 states. [2018-10-27 07:27:42,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1639 to 1637. [2018-10-27 07:27:42,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1637 states. [2018-10-27 07:27:42,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1637 states to 1637 states and 2031 transitions. [2018-10-27 07:27:42,458 INFO L78 Accepts]: Start accepts. Automaton has 1637 states and 2031 transitions. Word has length 284 [2018-10-27 07:27:42,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:27:42,459 INFO L481 AbstractCegarLoop]: Abstraction has 1637 states and 2031 transitions. [2018-10-27 07:27:42,459 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 07:27:42,459 INFO L276 IsEmpty]: Start isEmpty. Operand 1637 states and 2031 transitions. [2018-10-27 07:27:42,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2018-10-27 07:27:42,469 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:27:42,470 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-27 07:27:42,470 INFO L424 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:27:42,470 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:27:42,471 INFO L82 PathProgramCache]: Analyzing trace with hash 255407008, now seen corresponding path program 1 times [2018-10-27 07:27:42,471 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:27:42,472 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:27:42,472 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:27:42,472 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:27:42,472 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:27:42,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:27:42,820 WARN L179 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 07:27:42,998 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 123 proven. 46 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-10-27 07:27:42,999 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 07:27:42,999 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 07:27:42,999 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 311 with the following transitions: [2018-10-27 07:27:43,000 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [445], [447], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [678], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [718], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-10-27 07:27:43,003 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 07:27:43,003 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 07:27:43,199 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 07:27:43,199 INFO L272 AbstractInterpreter]: Visited 134 different actions 262 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-27 07:27:43,216 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:27:43,216 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 07:27:43,627 INFO L227 lantSequenceWeakener]: Weakened 307 states. On average, predicates are now at 78.45% of their original sizes. [2018-10-27 07:27:43,628 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 07:27:43,818 INFO L415 sIntCurrentIteration]: We unified 309 AI predicates to 309 [2018-10-27 07:27:43,819 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 07:27:43,819 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 07:27:43,819 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 14 [2018-10-27 07:27:43,819 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 07:27:43,820 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-27 07:27:43,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-27 07:27:43,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-10-27 07:27:43,820 INFO L87 Difference]: Start difference. First operand 1637 states and 2031 transitions. Second operand 10 states. [2018-10-27 07:28:01,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 07:28:01,677 INFO L93 Difference]: Finished difference Result 2944 states and 3704 transitions. [2018-10-27 07:28:01,677 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-27 07:28:01,677 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 310 [2018-10-27 07:28:01,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 07:28:01,684 INFO L225 Difference]: With dead ends: 2944 [2018-10-27 07:28:01,684 INFO L226 Difference]: Without dead ends: 1593 [2018-10-27 07:28:01,687 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 320 GetRequests, 301 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=108, Invalid=312, Unknown=0, NotChecked=0, Total=420 [2018-10-27 07:28:01,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1593 states. [2018-10-27 07:28:01,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1593 to 1532. [2018-10-27 07:28:01,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1532 states. [2018-10-27 07:28:01,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1532 states to 1532 states and 1752 transitions. [2018-10-27 07:28:01,724 INFO L78 Accepts]: Start accepts. Automaton has 1532 states and 1752 transitions. Word has length 310 [2018-10-27 07:28:01,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 07:28:01,725 INFO L481 AbstractCegarLoop]: Abstraction has 1532 states and 1752 transitions. [2018-10-27 07:28:01,725 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-10-27 07:28:01,725 INFO L276 IsEmpty]: Start isEmpty. Operand 1532 states and 1752 transitions. [2018-10-27 07:28:01,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2018-10-27 07:28:01,734 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 07:28:01,734 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 07:28:01,735 INFO L424 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 07:28:01,735 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:28:01,735 INFO L82 PathProgramCache]: Analyzing trace with hash -341971068, now seen corresponding path program 1 times [2018-10-27 07:28:01,735 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 07:28:01,736 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:28:01,736 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:28:01,737 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 07:28:01,737 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 07:28:01,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:28:03,241 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 315 proven. 140 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 07:28:03,242 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 07:28:03,242 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 07:28:03,242 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 383 with the following transitions: [2018-10-27 07:28:03,243 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [445], [447], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [526], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [667], [671], [675], [678], [679], [683], [687], [691], [694], [792], [796], [800], [806], [810], [812], [817], [818], [819], [821], [822] [2018-10-27 07:28:03,246 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-10-27 07:28:03,246 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 07:28:03,563 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-27 07:28:03,564 INFO L272 AbstractInterpreter]: Visited 130 different actions 388 times. Merged at 8 different actions 22 times. Never widened. Found 5 fixpoints after 3 different actions. Largest state had 24 variables. [2018-10-27 07:28:03,572 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 07:28:03,572 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-27 07:28:03,572 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 07:28:03,572 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) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-27 07:28:03,580 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 07:28:03,581 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-27 07:28:03,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 07:28:03,682 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-27 07:28:06,814 WARN L179 SmtUtils]: Spent 2.69 s on a formula simplification. DAG size of input: 90 DAG size of output: 32 [2018-10-27 07:28:07,118 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 391 proven. 2 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2018-10-27 07:28:07,119 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-27 07:28:07,236 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-10-27 07:28:08,139 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:28:08,507 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 304 [2018-10-27 07:29:14,439 WARN L177 XnfTransformerHelper]: Simplifying conjuction of 35801 disjunctions. This might take some time... [2018-10-27 07:29:14,816 INFO L193 XnfTransformerHelper]: Simplified to conjuction of 22 disjunctions. [2018-10-27 07:29:15,151 WARN L179 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 50 [2018-10-27 07:29:15,155 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:29:15,159 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:29:15,162 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:29:15,166 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:29:15,170 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:29:15,177 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:29:15,181 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:29:15,186 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:29:15,192 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:29:15,196 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:29:15,200 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:29:15,204 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:29:15,208 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:29:15,211 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:29:15,215 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:29:15,219 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:29:15,222 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:29:15,226 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:29:15,230 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:29:15,233 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:29:15,237 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:29:15,241 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:29:15,245 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:29:15,248 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:29:15,252 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:29:15,256 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:29:15,260 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:29:15,263 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:29:15,267 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:29:15,271 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:29:15,275 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:29:15,278 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:29:15,282 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:29:15,286 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:29:15,290 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:29:15,294 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:29:15,298 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:29:15,302 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:29:15,306 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:29:15,310 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:29:15,314 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:29:15,318 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:29:15,322 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:29:15,326 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:29:15,331 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:29:15,335 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:29:15,339 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:29:15,343 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:29:15,347 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:29:15,351 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:29:15,354 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:29:15,359 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:29:15,364 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:29:15,368 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:29:15,372 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:29:15,377 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:29:15,381 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:29:15,386 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:29:15,390 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:29:15,394 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:29:15,398 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:29:15,401 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:29:15,405 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:29:15,409 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:29:15,412 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:29:15,416 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:29:15,420 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:29:15,423 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:29:15,427 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:29:15,431 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:29:15,435 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:29:15,439 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:29:15,442 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:29:15,446 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:29:15,450 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:29:15,454 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:29:15,458 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:29:15,461 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:29:15,465 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:29:15,469 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:29:15,472 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:29:15,476 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:29:15,480 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:29:15,483 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:29:15,487 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:29:15,490 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:29:15,499 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:29:15,504 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:29:15,507 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:29:15,511 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:29:15,514 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:29:15,518 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:29:15,522 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:29:15,526 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:29:15,530 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:29:15,535 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:29:15,540 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:29:15,544 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:29:15,548 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:29:15,552 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:29:15,555 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:29:15,559 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:29:15,562 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:29:15,566 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:29:15,569 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:29:15,573 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:29:15,576 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:29:15,579 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2018-10-27 07:29:16,830 INFO L134 CoverageAnalysis]: Checked inductivity of 455 backedges. 189 proven. 261 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 07:29:16,852 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-27 07:29:16,853 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 8, 8] total 28 [2018-10-27 07:29:16,853 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-27 07:29:16,854 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-27 07:29:16,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-27 07:29:16,854 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=645, Unknown=0, NotChecked=0, Total=756 [2018-10-27 07:29:16,854 INFO L87 Difference]: Start difference. First operand 1532 states and 1752 transitions. Second operand 23 states. [2018-10-27 07:29:21,444 WARN L179 SmtUtils]: Spent 860.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 42 [2018-10-27 07:29:34,384 WARN L179 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 37 [2018-10-27 07:30:15,261 WARN L179 SmtUtils]: Spent 2.13 s on a formula simplification. DAG size of input: 56 DAG size of output: 40 [2018-10-27 07:30:21,991 WARN L179 SmtUtils]: Spent 2.15 s on a formula simplification. DAG size of input: 56 DAG size of output: 54 Received shutdown request... [2018-10-27 07:30:24,526 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2018-10-27 07:30:24,526 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 07:30:24,533 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 07:30:24,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 07:30:24 BoogieIcfgContainer [2018-10-27 07:30:24,534 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 07:30:24,534 INFO L168 Benchmark]: Toolchain (without parser) took 216938.94 ms. Allocated memory was 1.5 GB in the beginning and 5.9 GB in the end (delta: 4.3 GB). Free memory was 1.4 GB in the beginning and 3.4 GB in the end (delta: -2.0 GB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2018-10-27 07:30:24,536 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-27 07:30:24,536 INFO L168 Benchmark]: CACSL2BoogieTranslator took 715.24 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-10-27 07:30:24,538 INFO L168 Benchmark]: Boogie Procedure Inliner took 244.75 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 757.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -843.7 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. [2018-10-27 07:30:24,539 INFO L168 Benchmark]: Boogie Preprocessor took 98.68 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-27 07:30:24,539 INFO L168 Benchmark]: RCFGBuilder took 3225.68 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 119.4 MB). Peak memory consumption was 119.4 MB. Max. memory is 7.1 GB. [2018-10-27 07:30:24,540 INFO L168 Benchmark]: TraceAbstraction took 212649.39 ms. Allocated memory was 2.3 GB in the beginning and 5.9 GB in the end (delta: 3.6 GB). Free memory was 2.1 GB in the beginning and 3.4 GB in the end (delta: -1.3 GB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-10-27 07:30:24,545 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 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 715.24 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 244.75 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 757.1 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -843.7 MB). Peak memory consumption was 19.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 98.68 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 3225.68 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 119.4 MB). Peak memory consumption was 119.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 212649.39 ms. Allocated memory was 2.3 GB in the beginning and 5.9 GB in the end (delta: 3.6 GB). Free memory was 2.1 GB in the beginning and 3.4 GB in the end (delta: -1.3 GB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 187]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 187). Cancelled while BasicCegarLoop was constructing difference of abstraction (1532states) and FLOYD_HOARE automaton (currently 47 states, 23 states before enhancement),while ReachableStatesComputation was computing reachable states (2268 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 216 locations, 1 error locations. TIMEOUT Result, 212.5s OverallTime, 8 OverallIterations, 4 TraceHistogramMax, 126.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 681 SDtfs, 10186 SDslu, 1377 SDs, 0 SdLazy, 13838 SolverSat, 2866 SolverUnsat, 25 SolverUnknown, 0 SolverNotchecked, 99.0s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 2614 GetRequests, 2425 SyntacticMatches, 13 SemanticMatches, 176 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2317 ImplicationChecksByTransitivity, 18.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2321occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 2.5s AbstIntTime, 5 AbstIntIterations, 2 AbstIntStrong, 0.9976725651358006 AbsIntWeakeningRatio, 0.08783783783783784 AbsIntAvgWeakeningVarsNumRemoved, 14.58445945945946 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 7 MinimizatonAttempts, 573 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 79.5s InterpolantComputationTime, 2875 NumberOfCodeBlocks, 2875 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 3776 ConstructedInterpolants, 126 QuantifiedInterpolants, 9161433 SizeOfPredicates, 2 NumberOfNonLiveVariables, 1474 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 14 InterpolantComputations, 3 PerfectInterpolantSequences, 2576/3128 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown