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-INT-LIM.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label53_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 19:07:25,706 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 19:07:25,707 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 19:07:25,726 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 19:07:25,726 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 19:07:25,727 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 19:07:25,729 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 19:07:25,730 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 19:07:25,732 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 19:07:25,733 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 19:07:25,734 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 19:07:25,734 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 19:07:25,735 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 19:07:25,736 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 19:07:25,737 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 19:07:25,738 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 19:07:25,739 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 19:07:25,741 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 19:07:25,743 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 19:07:25,745 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 19:07:25,746 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 19:07:25,749 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 19:07:25,751 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 19:07:25,753 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 19:07:25,753 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 19:07:25,756 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 19:07:25,759 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 19:07:25,760 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 19:07:25,761 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 19:07:25,764 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 19:07:25,764 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 19:07:25,765 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-11-12 19:07:25,769 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-12 19:07:25,797 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 19:07:25,797 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 19:07:25,798 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 19:07:25,798 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 19:07:25,799 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 19:07:25,799 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 19:07:25,799 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 19:07:25,799 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 19:07:25,799 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 19:07:25,800 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 19:07:25,800 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 19:07:25,800 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 19:07:25,800 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 19:07:25,801 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 19:07:25,801 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 19:07:25,803 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 19:07:25,803 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 19:07:25,803 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 19:07:25,803 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 19:07:25,803 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 19:07:25,804 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 19:07:25,804 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 19:07:25,804 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 19:07:25,804 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 19:07:25,805 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 19:07:25,805 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 19:07:25,805 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 19:07:25,805 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 19:07:25,805 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 19:07:25,805 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 19:07:25,807 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 19:07:25,807 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 19:07:25,807 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 19:07:25,808 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 19:07:25,808 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 19:07:25,856 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 19:07:25,871 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 19:07:25,875 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 19:07:25,877 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 19:07:25,878 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 19:07:25,878 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label53_true-unreach-call_false-termination.c [2018-11-12 19:07:25,941 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdd5b8f74/59b48af13c6b4bf7a8048a812315e01b/FLAG0471717bf [2018-11-12 19:07:26,507 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 19:07:26,508 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label53_true-unreach-call_false-termination.c [2018-11-12 19:07:26,544 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdd5b8f74/59b48af13c6b4bf7a8048a812315e01b/FLAG0471717bf [2018-11-12 19:07:26,570 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fdd5b8f74/59b48af13c6b4bf7a8048a812315e01b [2018-11-12 19:07:26,584 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 19:07:26,586 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 19:07:26,587 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 19:07:26,588 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 19:07:26,593 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 19:07:26,595 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 07:07:26" (1/1) ... [2018-11-12 19:07:26,598 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6150c6a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:07:26, skipping insertion in model container [2018-11-12 19:07:26,598 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 07:07:26" (1/1) ... [2018-11-12 19:07:26,610 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 19:07:26,688 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 19:07:27,269 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 19:07:27,274 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 19:07:27,428 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 19:07:27,453 INFO L193 MainTranslator]: Completed translation [2018-11-12 19:07:27,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:07:27 WrapperNode [2018-11-12 19:07:27,454 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 19:07:27,455 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 19:07:27,455 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 19:07:27,456 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 19:07:27,471 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:07:27" (1/1) ... [2018-11-12 19:07:27,510 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:07:27" (1/1) ... [2018-11-12 19:07:27,640 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 19:07:27,642 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 19:07:27,642 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 19:07:27,643 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 19:07:27,655 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:07:27" (1/1) ... [2018-11-12 19:07:27,655 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:07:27" (1/1) ... [2018-11-12 19:07:27,669 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:07:27" (1/1) ... [2018-11-12 19:07:27,669 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:07:27" (1/1) ... [2018-11-12 19:07:27,731 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:07:27" (1/1) ... [2018-11-12 19:07:27,755 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:07:27" (1/1) ... [2018-11-12 19:07:27,763 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:07:27" (1/1) ... [2018-11-12 19:07:27,774 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 19:07:27,775 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 19:07:27,775 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 19:07:27,775 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 19:07:27,776 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:07:27" (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 [2018-11-12 19:07:27,855 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-12 19:07:27,855 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 19:07:27,855 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 19:07:27,855 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-12 19:07:27,855 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-12 19:07:27,856 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 19:07:27,856 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 19:07:27,856 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 19:07:27,857 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 19:07:31,637 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 19:07:31,638 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 07:07:31 BoogieIcfgContainer [2018-11-12 19:07:31,638 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 19:07:31,640 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 19:07:31,640 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 19:07:31,643 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 19:07:31,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 07:07:26" (1/3) ... [2018-11-12 19:07:31,644 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6009f742 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 07:07:31, skipping insertion in model container [2018-11-12 19:07:31,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:07:27" (2/3) ... [2018-11-12 19:07:31,645 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6009f742 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 07:07:31, skipping insertion in model container [2018-11-12 19:07:31,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 07:07:31" (3/3) ... [2018-11-12 19:07:31,647 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label53_true-unreach-call_false-termination.c [2018-11-12 19:07:31,657 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 19:07:31,666 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 19:07:31,684 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 19:07:31,724 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 19:07:31,724 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 19:07:31,725 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 19:07:31,725 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 19:07:31,725 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 19:07:31,725 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 19:07:31,726 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 19:07:31,726 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 19:07:31,758 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-11-12 19:07:31,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-11-12 19:07:31,768 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:07:31,770 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] [2018-11-12 19:07:31,772 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:07:31,779 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:07:31,779 INFO L82 PathProgramCache]: Analyzing trace with hash -1477043892, now seen corresponding path program 1 times [2018-11-12 19:07:31,782 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:07:31,844 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:07:31,844 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:07:31,844 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:07:31,844 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:07:31,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:07:32,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:07:32,358 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:07:32,358 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-12 19:07:32,359 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:07:32,367 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 19:07:32,384 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 19:07:32,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 19:07:32,388 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 3 states. [2018-11-12 19:07:34,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:07:34,174 INFO L93 Difference]: Finished difference Result 691 states and 1226 transitions. [2018-11-12 19:07:34,176 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 19:07:34,177 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 56 [2018-11-12 19:07:34,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:07:34,196 INFO L225 Difference]: With dead ends: 691 [2018-11-12 19:07:34,197 INFO L226 Difference]: Without dead ends: 434 [2018-11-12 19:07:34,204 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 19:07:34,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-11-12 19:07:34,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2018-11-12 19:07:34,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-11-12 19:07:34,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 765 transitions. [2018-11-12 19:07:34,322 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 765 transitions. Word has length 56 [2018-11-12 19:07:34,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:07:34,323 INFO L480 AbstractCegarLoop]: Abstraction has 434 states and 765 transitions. [2018-11-12 19:07:34,323 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 19:07:34,323 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 765 transitions. [2018-11-12 19:07:34,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-11-12 19:07:34,339 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:07:34,340 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:07:34,340 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:07:34,341 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:07:34,341 INFO L82 PathProgramCache]: Analyzing trace with hash 167474839, now seen corresponding path program 1 times [2018-11-12 19:07:34,341 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:07:34,344 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:07:34,344 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:07:34,344 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:07:34,344 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:07:34,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:07:34,864 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:07:34,864 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:07:34,865 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 19:07:34,865 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:07:34,867 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 19:07:34,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 19:07:34,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 19:07:34,868 INFO L87 Difference]: Start difference. First operand 434 states and 765 transitions. Second operand 6 states. [2018-11-12 19:07:37,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:07:37,051 INFO L93 Difference]: Finished difference Result 1062 states and 1897 transitions. [2018-11-12 19:07:37,052 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 19:07:37,052 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 143 [2018-11-12 19:07:37,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:07:37,058 INFO L225 Difference]: With dead ends: 1062 [2018-11-12 19:07:37,059 INFO L226 Difference]: Without dead ends: 634 [2018-11-12 19:07:37,061 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-12 19:07:37,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2018-11-12 19:07:37,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 625. [2018-11-12 19:07:37,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 625 states. [2018-11-12 19:07:37,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 1019 transitions. [2018-11-12 19:07:37,120 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 1019 transitions. Word has length 143 [2018-11-12 19:07:37,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:07:37,121 INFO L480 AbstractCegarLoop]: Abstraction has 625 states and 1019 transitions. [2018-11-12 19:07:37,121 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 19:07:37,121 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 1019 transitions. [2018-11-12 19:07:37,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2018-11-12 19:07:37,126 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:07:37,127 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:07:37,127 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:07:37,127 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:07:37,128 INFO L82 PathProgramCache]: Analyzing trace with hash 1433253212, now seen corresponding path program 1 times [2018-11-12 19:07:37,128 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:07:37,129 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:07:37,129 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:07:37,129 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:07:37,130 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:07:37,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:07:37,408 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:07:37,409 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:07:37,409 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-12 19:07:37,409 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:07:37,412 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-12 19:07:37,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-12 19:07:37,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 19:07:37,413 INFO L87 Difference]: Start difference. First operand 625 states and 1019 transitions. Second operand 4 states. [2018-11-12 19:07:40,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:07:40,657 INFO L93 Difference]: Finished difference Result 2350 states and 4002 transitions. [2018-11-12 19:07:40,660 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-12 19:07:40,660 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 152 [2018-11-12 19:07:40,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:07:40,678 INFO L225 Difference]: With dead ends: 2350 [2018-11-12 19:07:40,678 INFO L226 Difference]: Without dead ends: 1731 [2018-11-12 19:07:40,687 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 19:07:40,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1731 states. [2018-11-12 19:07:40,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1731 to 1731. [2018-11-12 19:07:40,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1731 states. [2018-11-12 19:07:40,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1731 states to 1731 states and 2678 transitions. [2018-11-12 19:07:40,777 INFO L78 Accepts]: Start accepts. Automaton has 1731 states and 2678 transitions. Word has length 152 [2018-11-12 19:07:40,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:07:40,778 INFO L480 AbstractCegarLoop]: Abstraction has 1731 states and 2678 transitions. [2018-11-12 19:07:40,778 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-12 19:07:40,778 INFO L276 IsEmpty]: Start isEmpty. Operand 1731 states and 2678 transitions. [2018-11-12 19:07:40,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2018-11-12 19:07:40,787 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:07:40,788 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-12 19:07:40,788 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:07:40,788 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:07:40,789 INFO L82 PathProgramCache]: Analyzing trace with hash -830750464, now seen corresponding path program 1 times [2018-11-12 19:07:40,789 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:07:40,790 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:07:40,790 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:07:40,790 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:07:40,790 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:07:40,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:07:41,774 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 183 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:07:41,774 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:07:41,774 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:07:41,775 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 257 with the following transitions: [2018-11-12 19:07:41,778 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], [349], [351], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [562], [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], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-12 19:07:41,827 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:07:41,827 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:07:42,514 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:07:42,523 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:07:42,525 INFO L272 AbstractInterpreter]: Visited 118 different actions 118 times. Never merged. Never widened. Performed 1028 root evaluator evaluations with a maximum evaluation depth of 6. Performed 1028 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Never found a fixpoint. Largest state had 24 variables. [2018-11-12 19:07:42,579 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:07:42,579 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:07:43,249 INFO L227 lantSequenceWeakener]: Weakened 247 states. On average, predicates are now at 77.96% of their original sizes. [2018-11-12 19:07:43,249 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:07:43,589 INFO L415 sIntCurrentIteration]: We unified 255 AI predicates to 255 [2018-11-12 19:07:43,589 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:07:43,590 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:07:43,590 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2018-11-12 19:07:43,590 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:07:43,591 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-12 19:07:43,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-12 19:07:43,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-12 19:07:43,592 INFO L87 Difference]: Start difference. First operand 1731 states and 2678 transitions. Second operand 7 states. [2018-11-12 19:07:57,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:07:57,907 INFO L93 Difference]: Finished difference Result 3641 states and 5641 transitions. [2018-11-12 19:07:57,907 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 19:07:57,907 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 256 [2018-11-12 19:07:57,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:07:57,920 INFO L225 Difference]: With dead ends: 3641 [2018-11-12 19:07:57,920 INFO L226 Difference]: Without dead ends: 1916 [2018-11-12 19:07:57,928 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 256 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-12 19:07:57,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1916 states. [2018-11-12 19:07:57,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1916 to 1914. [2018-11-12 19:07:57,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1914 states. [2018-11-12 19:07:57,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1914 states to 1914 states and 2869 transitions. [2018-11-12 19:07:57,986 INFO L78 Accepts]: Start accepts. Automaton has 1914 states and 2869 transitions. Word has length 256 [2018-11-12 19:07:57,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:07:57,987 INFO L480 AbstractCegarLoop]: Abstraction has 1914 states and 2869 transitions. [2018-11-12 19:07:57,987 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-12 19:07:57,987 INFO L276 IsEmpty]: Start isEmpty. Operand 1914 states and 2869 transitions. [2018-11-12 19:07:57,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2018-11-12 19:07:57,999 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:07:57,999 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:07:58,000 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:07:58,000 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:07:58,000 INFO L82 PathProgramCache]: Analyzing trace with hash -1183303121, now seen corresponding path program 1 times [2018-11-12 19:07:58,001 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:07:58,002 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:07:58,002 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:07:58,005 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:07:58,005 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:07:58,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:07:58,513 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-12 19:07:58,718 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-11-12 19:07:58,917 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-12 19:07:59,564 INFO L134 CoverageAnalysis]: Checked inductivity of 404 backedges. 235 proven. 164 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-12 19:07:59,564 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:07:59,564 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:07:59,564 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 342 with the following transitions: [2018-11-12 19:07:59,565 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], [349], [351], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [554], [555], [559], [562], [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], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-12 19:07:59,570 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:07:59,571 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:07:59,725 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:07:59,898 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:07:59,899 INFO L272 AbstractInterpreter]: Visited 122 different actions 237 times. Merged at 4 different actions 4 times. Never widened. Performed 2387 root evaluator evaluations with a maximum evaluation depth of 6. Performed 2387 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 19:07:59,937 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:07:59,938 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:08:00,838 INFO L227 lantSequenceWeakener]: Weakened 150 states. On average, predicates are now at 77.82% of their original sizes. [2018-11-12 19:08:00,838 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:08:02,795 INFO L415 sIntCurrentIteration]: We unified 340 AI predicates to 340 [2018-11-12 19:08:02,795 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:08:02,795 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:08:02,796 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [23] imperfect sequences [12] total 33 [2018-11-12 19:08:02,796 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:08:02,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-11-12 19:08:02,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-11-12 19:08:02,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2018-11-12 19:08:02,797 INFO L87 Difference]: Start difference. First operand 1914 states and 2869 transitions. Second operand 23 states. [2018-11-12 19:08:25,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:08:25,920 INFO L93 Difference]: Finished difference Result 4794 states and 6936 transitions. [2018-11-12 19:08:25,920 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-11-12 19:08:25,920 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 341 [2018-11-12 19:08:25,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:08:25,933 INFO L225 Difference]: With dead ends: 4794 [2018-11-12 19:08:25,934 INFO L226 Difference]: Without dead ends: 2284 [2018-11-12 19:08:25,944 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 350 GetRequests, 319 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=207, Invalid=849, Unknown=0, NotChecked=0, Total=1056 [2018-11-12 19:08:25,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2284 states. [2018-11-12 19:08:25,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2284 to 2282. [2018-11-12 19:08:25,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2282 states. [2018-11-12 19:08:26,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2282 states to 2282 states and 3245 transitions. [2018-11-12 19:08:26,008 INFO L78 Accepts]: Start accepts. Automaton has 2282 states and 3245 transitions. Word has length 341 [2018-11-12 19:08:26,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:08:26,009 INFO L480 AbstractCegarLoop]: Abstraction has 2282 states and 3245 transitions. [2018-11-12 19:08:26,009 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-11-12 19:08:26,009 INFO L276 IsEmpty]: Start isEmpty. Operand 2282 states and 3245 transitions. [2018-11-12 19:08:26,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2018-11-12 19:08:26,021 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:08:26,021 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:08:26,021 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:08:26,022 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:08:26,022 INFO L82 PathProgramCache]: Analyzing trace with hash -324101989, now seen corresponding path program 1 times [2018-11-12 19:08:26,022 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:08:26,023 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:08:26,023 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:08:26,023 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:08:26,023 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:08:26,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:08:26,501 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-12 19:08:26,696 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-11-12 19:08:26,915 WARN L179 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-12 19:08:27,279 WARN L179 SmtUtils]: Spent 256.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-11-12 19:08:28,110 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 160 proven. 267 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-12 19:08:28,110 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:08:28,111 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:08:28,111 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 368 with the following transitions: [2018-11-12 19:08:28,112 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], [349], [351], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [562], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [658], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-12 19:08:28,117 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:08:28,117 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:08:28,183 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:08:28,279 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:08:28,279 INFO L272 AbstractInterpreter]: Visited 122 different actions 238 times. Merged at 5 different actions 5 times. Never widened. Performed 2189 root evaluator evaluations with a maximum evaluation depth of 6. Performed 2189 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 19:08:28,284 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:08:28,284 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:08:28,728 INFO L227 lantSequenceWeakener]: Weakened 142 states. On average, predicates are now at 78.84% of their original sizes. [2018-11-12 19:08:28,728 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:08:29,116 INFO L415 sIntCurrentIteration]: We unified 366 AI predicates to 366 [2018-11-12 19:08:29,117 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:08:29,117 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:08:29,117 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [21] imperfect sequences [15] total 34 [2018-11-12 19:08:29,117 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:08:29,118 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-11-12 19:08:29,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-11-12 19:08:29,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2018-11-12 19:08:29,119 INFO L87 Difference]: Start difference. First operand 2282 states and 3245 transitions. Second operand 21 states. [2018-11-12 19:08:40,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:08:40,698 INFO L93 Difference]: Finished difference Result 4380 states and 6518 transitions. [2018-11-12 19:08:40,698 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-11-12 19:08:40,699 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 367 [2018-11-12 19:08:40,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:08:40,710 INFO L225 Difference]: With dead ends: 4380 [2018-11-12 19:08:40,711 INFO L226 Difference]: Without dead ends: 2655 [2018-11-12 19:08:40,719 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 384 GetRequests, 347 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 309 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=280, Invalid=1202, Unknown=0, NotChecked=0, Total=1482 [2018-11-12 19:08:40,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2655 states. [2018-11-12 19:08:40,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2655 to 2650. [2018-11-12 19:08:40,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2650 states. [2018-11-12 19:08:40,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2650 states to 2650 states and 3641 transitions. [2018-11-12 19:08:40,784 INFO L78 Accepts]: Start accepts. Automaton has 2650 states and 3641 transitions. Word has length 367 [2018-11-12 19:08:40,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:08:40,784 INFO L480 AbstractCegarLoop]: Abstraction has 2650 states and 3641 transitions. [2018-11-12 19:08:40,784 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-11-12 19:08:40,784 INFO L276 IsEmpty]: Start isEmpty. Operand 2650 states and 3641 transitions. [2018-11-12 19:08:40,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2018-11-12 19:08:40,796 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:08:40,796 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-12 19:08:40,797 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:08:40,797 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:08:40,797 INFO L82 PathProgramCache]: Analyzing trace with hash -2017815001, now seen corresponding path program 1 times [2018-11-12 19:08:40,797 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:08:40,798 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:08:40,798 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:08:40,798 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:08:40,799 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:08:40,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:08:41,329 WARN L179 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-12 19:08:41,928 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 263 proven. 166 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-12 19:08:41,929 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:08:41,929 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:08:41,929 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 378 with the following transitions: [2018-11-12 19:08:41,929 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], [349], [351], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [562], [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], [666], [667], [671], [675], [679], [683], [687], [691], [695], [698], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-12 19:08:41,933 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:08:41,933 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:08:42,048 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:08:42,206 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:08:42,207 INFO L272 AbstractInterpreter]: Visited 130 different actions 256 times. Merged at 5 different actions 7 times. Never widened. Performed 4336 root evaluator evaluations with a maximum evaluation depth of 6. Performed 4336 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 19:08:42,215 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:08:42,215 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:08:42,733 INFO L227 lantSequenceWeakener]: Weakened 88 states. On average, predicates are now at 78.2% of their original sizes. [2018-11-12 19:08:42,733 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:08:43,107 INFO L415 sIntCurrentIteration]: We unified 376 AI predicates to 376 [2018-11-12 19:08:43,108 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:08:43,108 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:08:43,108 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [12] total 29 [2018-11-12 19:08:43,108 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:08:43,109 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-11-12 19:08:43,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-11-12 19:08:43,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2018-11-12 19:08:43,109 INFO L87 Difference]: Start difference. First operand 2650 states and 3641 transitions. Second operand 19 states. [2018-11-12 19:09:02,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:09:02,413 INFO L93 Difference]: Finished difference Result 5350 states and 7519 transitions. [2018-11-12 19:09:02,414 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-11-12 19:09:02,414 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 377 [2018-11-12 19:09:02,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:09:02,428 INFO L225 Difference]: With dead ends: 5350 [2018-11-12 19:09:02,428 INFO L226 Difference]: Without dead ends: 2840 [2018-11-12 19:09:02,438 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 385 GetRequests, 359 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=154, Invalid=602, Unknown=0, NotChecked=0, Total=756 [2018-11-12 19:09:02,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2840 states. [2018-11-12 19:09:02,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2840 to 2652. [2018-11-12 19:09:02,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2652 states. [2018-11-12 19:09:02,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2652 states to 2652 states and 3642 transitions. [2018-11-12 19:09:02,513 INFO L78 Accepts]: Start accepts. Automaton has 2652 states and 3642 transitions. Word has length 377 [2018-11-12 19:09:02,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:09:02,514 INFO L480 AbstractCegarLoop]: Abstraction has 2652 states and 3642 transitions. [2018-11-12 19:09:02,514 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-11-12 19:09:02,514 INFO L276 IsEmpty]: Start isEmpty. Operand 2652 states and 3642 transitions. [2018-11-12 19:09:02,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 403 [2018-11-12 19:09:02,528 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:09:02,529 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-12 19:09:02,529 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:09:02,529 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:09:02,529 INFO L82 PathProgramCache]: Analyzing trace with hash -609602292, now seen corresponding path program 1 times [2018-11-12 19:09:02,530 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:09:02,530 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:09:02,531 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:09:02,531 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:09:02,531 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:09:02,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:09:03,094 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-12 19:09:03,677 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 247 proven. 182 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-12 19:09:03,677 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:09:03,677 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:09:03,677 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 403 with the following transitions: [2018-11-12 19:09:03,678 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], [349], [351], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [562], [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], [666], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [798], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-12 19:09:03,681 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:09:03,681 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:09:03,758 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:09:03,986 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:09:03,986 INFO L272 AbstractInterpreter]: Visited 155 different actions 303 times. Merged at 4 different actions 4 times. Never widened. Performed 3182 root evaluator evaluations with a maximum evaluation depth of 6. Performed 3182 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 19:09:04,027 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:09:04,028 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:09:04,647 INFO L227 lantSequenceWeakener]: Weakened 92 states. On average, predicates are now at 78.16% of their original sizes. [2018-11-12 19:09:04,647 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:09:05,067 INFO L415 sIntCurrentIteration]: We unified 401 AI predicates to 401 [2018-11-12 19:09:05,067 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:09:05,068 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:09:05,068 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [20] imperfect sequences [13] total 31 [2018-11-12 19:09:05,068 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:09:05,069 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-12 19:09:05,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-12 19:09:05,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2018-11-12 19:09:05,070 INFO L87 Difference]: Start difference. First operand 2652 states and 3642 transitions. Second operand 20 states. [2018-11-12 19:09:29,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:09:29,853 INFO L93 Difference]: Finished difference Result 5350 states and 7519 transitions. [2018-11-12 19:09:29,853 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-11-12 19:09:29,853 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 402 [2018-11-12 19:09:29,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:09:29,867 INFO L225 Difference]: With dead ends: 5350 [2018-11-12 19:09:29,867 INFO L226 Difference]: Without dead ends: 2840 [2018-11-12 19:09:29,876 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 411 GetRequests, 383 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=174, Invalid=696, Unknown=0, NotChecked=0, Total=870 [2018-11-12 19:09:29,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2840 states. [2018-11-12 19:09:29,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2840 to 2652. [2018-11-12 19:09:29,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2652 states. [2018-11-12 19:09:29,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2652 states to 2652 states and 3642 transitions. [2018-11-12 19:09:29,952 INFO L78 Accepts]: Start accepts. Automaton has 2652 states and 3642 transitions. Word has length 402 [2018-11-12 19:09:29,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:09:29,953 INFO L480 AbstractCegarLoop]: Abstraction has 2652 states and 3642 transitions. [2018-11-12 19:09:29,953 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-11-12 19:09:29,953 INFO L276 IsEmpty]: Start isEmpty. Operand 2652 states and 3642 transitions. [2018-11-12 19:09:29,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 416 [2018-11-12 19:09:29,963 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:09:29,964 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-12 19:09:29,964 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:09:29,964 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:09:29,964 INFO L82 PathProgramCache]: Analyzing trace with hash 553325371, now seen corresponding path program 1 times [2018-11-12 19:09:29,965 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:09:29,965 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:09:29,966 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:09:29,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:09:29,966 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:09:29,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:09:30,602 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-11-12 19:09:30,833 WARN L179 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-12 19:09:31,282 WARN L179 SmtUtils]: Spent 325.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2018-11-12 19:09:31,833 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 234 proven. 195 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-12 19:09:31,834 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:09:31,834 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:09:31,834 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 416 with the following transitions: [2018-11-12 19:09:31,834 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], [349], [351], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [562], [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], [666], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [850], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-12 19:09:31,837 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:09:31,838 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:09:31,915 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:09:32,132 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:09:32,132 INFO L272 AbstractInterpreter]: Visited 168 different actions 329 times. Merged at 4 different actions 4 times. Never widened. Performed 4637 root evaluator evaluations with a maximum evaluation depth of 6. Performed 4637 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 19:09:32,137 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:09:32,137 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:09:32,771 INFO L227 lantSequenceWeakener]: Weakened 90 states. On average, predicates are now at 78.18% of their original sizes. [2018-11-12 19:09:32,772 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:09:33,378 INFO L415 sIntCurrentIteration]: We unified 414 AI predicates to 414 [2018-11-12 19:09:33,379 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:09:33,379 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:09:33,379 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [20] imperfect sequences [12] total 30 [2018-11-12 19:09:33,379 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:09:33,380 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-12 19:09:33,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-12 19:09:33,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=294, Unknown=0, NotChecked=0, Total=380 [2018-11-12 19:09:33,380 INFO L87 Difference]: Start difference. First operand 2652 states and 3642 transitions. Second operand 20 states. [2018-11-12 19:09:53,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:09:53,226 INFO L93 Difference]: Finished difference Result 5350 states and 7519 transitions. [2018-11-12 19:09:53,226 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-11-12 19:09:53,226 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 415 [2018-11-12 19:09:53,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:09:53,238 INFO L225 Difference]: With dead ends: 5350 [2018-11-12 19:09:53,239 INFO L226 Difference]: Without dead ends: 2840 [2018-11-12 19:09:53,247 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 424 GetRequests, 392 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=185, Invalid=685, Unknown=0, NotChecked=0, Total=870 [2018-11-12 19:09:53,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2840 states. [2018-11-12 19:09:53,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2840 to 2652. [2018-11-12 19:09:53,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2652 states. [2018-11-12 19:09:53,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2652 states to 2652 states and 3642 transitions. [2018-11-12 19:09:53,311 INFO L78 Accepts]: Start accepts. Automaton has 2652 states and 3642 transitions. Word has length 415 [2018-11-12 19:09:53,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:09:53,311 INFO L480 AbstractCegarLoop]: Abstraction has 2652 states and 3642 transitions. [2018-11-12 19:09:53,311 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-11-12 19:09:53,312 INFO L276 IsEmpty]: Start isEmpty. Operand 2652 states and 3642 transitions. [2018-11-12 19:09:53,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2018-11-12 19:09:53,321 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:09:53,322 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-12 19:09:53,322 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:09:53,323 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:09:53,323 INFO L82 PathProgramCache]: Analyzing trace with hash 720011747, now seen corresponding path program 1 times [2018-11-12 19:09:53,323 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:09:53,324 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:09:53,324 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:09:53,324 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:09:53,324 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:09:53,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:09:53,809 WARN L179 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-12 19:09:54,416 INFO L134 CoverageAnalysis]: Checked inductivity of 434 backedges. 222 proven. 207 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-12 19:09:54,416 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:09:54,416 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:09:54,417 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 428 with the following transitions: [2018-11-12 19:09:54,417 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], [349], [351], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [562], [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], [666], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [898], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-12 19:09:54,419 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:09:54,419 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:09:54,470 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:09:55,008 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:09:55,009 INFO L272 AbstractInterpreter]: Visited 180 different actions 353 times. Merged at 4 different actions 4 times. Never widened. Performed 3748 root evaluator evaluations with a maximum evaluation depth of 6. Performed 3748 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 19:09:55,015 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:09:55,015 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:09:55,486 INFO L227 lantSequenceWeakener]: Weakened 92 states. On average, predicates are now at 78.16% of their original sizes. [2018-11-12 19:09:55,486 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:09:55,901 INFO L415 sIntCurrentIteration]: We unified 426 AI predicates to 426 [2018-11-12 19:09:55,902 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:09:55,902 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:09:55,902 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [20] imperfect sequences [14] total 32 [2018-11-12 19:09:55,902 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:09:55,903 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-12 19:09:55,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-12 19:09:55,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2018-11-12 19:09:55,904 INFO L87 Difference]: Start difference. First operand 2652 states and 3642 transitions. Second operand 20 states. [2018-11-12 19:10:17,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:10:17,758 INFO L93 Difference]: Finished difference Result 5348 states and 7517 transitions. [2018-11-12 19:10:17,758 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-11-12 19:10:17,758 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 427 [2018-11-12 19:10:17,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:10:17,769 INFO L225 Difference]: With dead ends: 5348 [2018-11-12 19:10:17,769 INFO L226 Difference]: Without dead ends: 2838 [2018-11-12 19:10:17,778 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 436 GetRequests, 408 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 185 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=174, Invalid=696, Unknown=0, NotChecked=0, Total=870 [2018-11-12 19:10:17,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2838 states. [2018-11-12 19:10:17,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2838 to 2650. [2018-11-12 19:10:17,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2650 states. [2018-11-12 19:10:17,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2650 states to 2650 states and 3640 transitions. [2018-11-12 19:10:17,831 INFO L78 Accepts]: Start accepts. Automaton has 2650 states and 3640 transitions. Word has length 427 [2018-11-12 19:10:17,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:10:17,832 INFO L480 AbstractCegarLoop]: Abstraction has 2650 states and 3640 transitions. [2018-11-12 19:10:17,832 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-11-12 19:10:17,832 INFO L276 IsEmpty]: Start isEmpty. Operand 2650 states and 3640 transitions. [2018-11-12 19:10:17,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 453 [2018-11-12 19:10:17,842 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:10:17,843 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2018-11-12 19:10:17,843 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:10:17,843 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:10:17,843 INFO L82 PathProgramCache]: Analyzing trace with hash -165865100, now seen corresponding path program 1 times [2018-11-12 19:10:17,843 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:10:17,844 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:10:17,844 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:10:17,844 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:10:17,845 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:10:17,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:10:18,206 INFO L134 CoverageAnalysis]: Checked inductivity of 736 backedges. 289 proven. 166 refuted. 0 times theorem prover too weak. 281 trivial. 0 not checked. [2018-11-12 19:10:18,206 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:10:18,206 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:10:18,206 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 453 with the following transitions: [2018-11-12 19:10:18,207 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], [349], [351], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [554], [555], [559], [562], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [658], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-12 19:10:18,208 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:10:18,208 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:10:18,294 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:10:18,551 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:10:18,551 INFO L272 AbstractInterpreter]: Visited 123 different actions 364 times. Merged at 7 different actions 17 times. Never widened. Performed 5061 root evaluator evaluations with a maximum evaluation depth of 6. Performed 5061 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 4 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-12 19:10:18,556 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:10:18,556 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:10:19,203 INFO L227 lantSequenceWeakener]: Weakened 127 states. On average, predicates are now at 77.92% of their original sizes. [2018-11-12 19:10:19,204 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:10:19,788 INFO L415 sIntCurrentIteration]: We unified 451 AI predicates to 451 [2018-11-12 19:10:19,788 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:10:19,788 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:10:19,789 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [24] imperfect sequences [6] total 28 [2018-11-12 19:10:19,789 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:10:19,790 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-11-12 19:10:19,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-11-12 19:10:19,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=441, Unknown=0, NotChecked=0, Total=552 [2018-11-12 19:10:19,791 INFO L87 Difference]: Start difference. First operand 2650 states and 3640 transitions. Second operand 24 states. [2018-11-12 19:10:42,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:10:42,848 INFO L93 Difference]: Finished difference Result 5541 states and 7708 transitions. [2018-11-12 19:10:42,848 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-11-12 19:10:42,848 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 452 [2018-11-12 19:10:42,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:10:42,861 INFO L225 Difference]: With dead ends: 5541 [2018-11-12 19:10:42,861 INFO L226 Difference]: Without dead ends: 3031 [2018-11-12 19:10:42,872 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 469 GetRequests, 429 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 430 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=330, Invalid=1392, Unknown=0, NotChecked=0, Total=1722 [2018-11-12 19:10:42,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3031 states. [2018-11-12 19:10:42,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3031 to 2840. [2018-11-12 19:10:42,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2840 states. [2018-11-12 19:10:42,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2840 states to 2840 states and 3828 transitions. [2018-11-12 19:10:42,935 INFO L78 Accepts]: Start accepts. Automaton has 2840 states and 3828 transitions. Word has length 452 [2018-11-12 19:10:42,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:10:42,936 INFO L480 AbstractCegarLoop]: Abstraction has 2840 states and 3828 transitions. [2018-11-12 19:10:42,936 INFO L481 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-11-12 19:10:42,936 INFO L276 IsEmpty]: Start isEmpty. Operand 2840 states and 3828 transitions. [2018-11-12 19:10:42,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 456 [2018-11-12 19:10:42,946 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:10:42,947 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2018-11-12 19:10:42,947 INFO L423 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:10:42,947 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:10:42,947 INFO L82 PathProgramCache]: Analyzing trace with hash -1530347973, now seen corresponding path program 1 times [2018-11-12 19:10:42,947 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:10:42,948 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:10:42,948 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:10:42,948 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:10:42,949 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:10:42,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:10:46,872 WARN L179 SmtUtils]: Spent 3.39 s on a formula simplification that was a NOOP. DAG size: 28 [2018-11-12 19:10:47,220 INFO L134 CoverageAnalysis]: Checked inductivity of 744 backedges. 307 proven. 432 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-12 19:10:47,220 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:10:47,220 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:10:47,221 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 456 with the following transitions: [2018-11-12 19:10:47,221 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], [349], [351], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [562], [563], [566], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [658], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-12 19:10:47,222 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:10:47,223 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:10:47,281 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:10:47,473 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:10:47,473 INFO L272 AbstractInterpreter]: Visited 123 different actions 364 times. Merged at 7 different actions 17 times. Never widened. Performed 3556 root evaluator evaluations with a maximum evaluation depth of 6. Performed 3556 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 3 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-12 19:10:47,481 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:10:47,481 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:10:47,957 INFO L227 lantSequenceWeakener]: Weakened 123 states. On average, predicates are now at 77.61% of their original sizes. [2018-11-12 19:10:47,957 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:10:48,279 INFO L415 sIntCurrentIteration]: We unified 454 AI predicates to 454 [2018-11-12 19:10:48,279 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:10:48,279 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:10:48,279 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [15] total 29 [2018-11-12 19:10:48,279 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:10:48,280 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-12 19:10:48,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-12 19:10:48,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2018-11-12 19:10:48,280 INFO L87 Difference]: Start difference. First operand 2840 states and 3828 transitions. Second operand 16 states. [2018-11-12 19:11:06,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:11:06,346 INFO L93 Difference]: Finished difference Result 5095 states and 7152 transitions. [2018-11-12 19:11:06,347 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-11-12 19:11:06,347 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 455 [2018-11-12 19:11:06,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:11:06,357 INFO L225 Difference]: With dead ends: 5095 [2018-11-12 19:11:06,357 INFO L226 Difference]: Without dead ends: 2470 [2018-11-12 19:11:06,365 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 464 GetRequests, 440 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=144, Invalid=506, Unknown=0, NotChecked=0, Total=650 [2018-11-12 19:11:06,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2470 states. [2018-11-12 19:11:06,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2470 to 2466. [2018-11-12 19:11:06,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2466 states. [2018-11-12 19:11:06,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2466 states to 2466 states and 3422 transitions. [2018-11-12 19:11:06,418 INFO L78 Accepts]: Start accepts. Automaton has 2466 states and 3422 transitions. Word has length 455 [2018-11-12 19:11:06,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:11:06,418 INFO L480 AbstractCegarLoop]: Abstraction has 2466 states and 3422 transitions. [2018-11-12 19:11:06,418 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-12 19:11:06,419 INFO L276 IsEmpty]: Start isEmpty. Operand 2466 states and 3422 transitions. [2018-11-12 19:11:06,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 478 [2018-11-12 19:11:06,428 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:11:06,428 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:11:06,429 INFO L423 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:11:06,429 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:11:06,429 INFO L82 PathProgramCache]: Analyzing trace with hash -748883729, now seen corresponding path program 1 times [2018-11-12 19:11:06,429 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:11:06,430 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:11:06,430 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:11:06,430 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:11:06,431 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:11:06,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:11:07,407 INFO L134 CoverageAnalysis]: Checked inductivity of 788 backedges. 461 proven. 2 refuted. 0 times theorem prover too weak. 325 trivial. 0 not checked. [2018-11-12 19:11:07,407 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:11:07,407 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:11:07,407 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 478 with the following transitions: [2018-11-12 19:11:07,408 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], [349], [351], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [562], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-12 19:11:07,410 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:11:07,410 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:11:07,467 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:11:07,662 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:11:07,662 INFO L272 AbstractInterpreter]: Visited 123 different actions 366 times. Merged at 7 different actions 19 times. Never widened. Performed 3592 root evaluator evaluations with a maximum evaluation depth of 6. Performed 3592 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 3 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-12 19:11:07,670 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:11:07,670 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:11:08,109 INFO L227 lantSequenceWeakener]: Weakened 474 states. On average, predicates are now at 80.29% of their original sizes. [2018-11-12 19:11:08,109 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:11:08,220 INFO L415 sIntCurrentIteration]: We unified 476 AI predicates to 476 [2018-11-12 19:11:08,220 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:11:08,220 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:11:08,221 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [7] total 15 [2018-11-12 19:11:08,221 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:11:08,221 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-12 19:11:08,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-12 19:11:08,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-11-12 19:11:08,222 INFO L87 Difference]: Start difference. First operand 2466 states and 3422 transitions. Second operand 10 states. [2018-11-12 19:11:12,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:11:12,201 INFO L93 Difference]: Finished difference Result 4582 states and 6735 transitions. [2018-11-12 19:11:12,201 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-12 19:11:12,201 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 477 [2018-11-12 19:11:12,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:11:12,212 INFO L225 Difference]: With dead ends: 4582 [2018-11-12 19:11:12,213 INFO L226 Difference]: Without dead ends: 2857 [2018-11-12 19:11:12,219 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 484 GetRequests, 468 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2018-11-12 19:11:12,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2857 states. [2018-11-12 19:11:12,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2857 to 2655. [2018-11-12 19:11:12,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2655 states. [2018-11-12 19:11:12,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2655 states to 2655 states and 3686 transitions. [2018-11-12 19:11:12,276 INFO L78 Accepts]: Start accepts. Automaton has 2655 states and 3686 transitions. Word has length 477 [2018-11-12 19:11:12,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:11:12,277 INFO L480 AbstractCegarLoop]: Abstraction has 2655 states and 3686 transitions. [2018-11-12 19:11:12,277 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-12 19:11:12,277 INFO L276 IsEmpty]: Start isEmpty. Operand 2655 states and 3686 transitions. [2018-11-12 19:11:12,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 545 [2018-11-12 19:11:12,287 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:11:12,288 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2018-11-12 19:11:12,288 INFO L423 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:11:12,288 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:11:12,289 INFO L82 PathProgramCache]: Analyzing trace with hash 816469536, now seen corresponding path program 1 times [2018-11-12 19:11:12,289 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:11:12,290 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:11:12,290 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:11:12,290 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:11:12,290 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:11:12,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2018-11-12 19:11:14,274 INFO L134 CoverageAnalysis]: Checked inductivity of 788 backedges. 430 proven. 273 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-11-12 19:11:14,274 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:11:14,274 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:11:14,274 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 545 with the following transitions: [2018-11-12 19:11:14,275 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], [349], [351], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [562], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [654], [655], [658], [659], [663], [667], [671], [675], [679], [683], [687], [691], [695], [699], [703], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [791], [795], [799], [803], [807], [811], [815], [819], [823], [827], [831], [835], [839], [843], [847], [851], [855], [859], [863], [867], [871], [875], [879], [883], [887], [891], [895], [899], [903], [907], [911], [915], [919], [923], [927], [931], [934], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-11-12 19:11:14,278 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:11:14,278 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:11:14,278 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-11-12 19:11:14,279 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-11-12 19:11:14,280 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-12 19:11:14,280 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:11:14,280 INFO L192 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 [2018-11-12 19:11:14,289 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:11:14,289 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 19:11:14,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:11:14,472 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 19:11:14,518 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-11-12 19:11:14,719 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 19:11:14,720 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-12 19:11:14,725 WARN L205 ceAbstractionStarter]: Timeout [2018-11-12 19:11:14,726 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 07:11:14 BoogieIcfgContainer [2018-11-12 19:11:14,726 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 19:11:14,727 INFO L168 Benchmark]: Toolchain (without parser) took 228141.76 ms. Allocated memory was 1.5 GB in the beginning and 4.9 GB in the end (delta: 3.4 GB). Free memory was 1.4 GB in the beginning and 3.3 GB in the end (delta: -1.8 GB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-11-12 19:11:14,728 INFO L168 Benchmark]: CDTParser took 0.27 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. [2018-11-12 19:11:14,728 INFO L168 Benchmark]: CACSL2BoogieTranslator took 867.17 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: 44.9 MB). Peak memory consumption was 44.9 MB. Max. memory is 7.1 GB. [2018-11-12 19:11:14,729 INFO L168 Benchmark]: Boogie Procedure Inliner took 186.80 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 754.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -853.3 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. [2018-11-12 19:11:14,731 INFO L168 Benchmark]: Boogie Preprocessor took 132.05 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-12 19:11:14,732 INFO L168 Benchmark]: RCFGBuilder took 3864.20 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: 132.2 MB). Peak memory consumption was 132.2 MB. Max. memory is 7.1 GB. [2018-11-12 19:11:14,733 INFO L168 Benchmark]: TraceAbstraction took 223086.48 ms. Allocated memory was 2.3 GB in the beginning and 4.9 GB in the end (delta: 2.6 GB). Free memory was 2.1 GB in the beginning and 3.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-11-12 19:11:14,744 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 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 867.17 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: 44.9 MB). Peak memory consumption was 44.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 186.80 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 754.5 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -853.3 MB). Peak memory consumption was 20.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 132.05 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 3864.20 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: 132.2 MB). Peak memory consumption was 132.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 223086.48 ms. Allocated memory was 2.3 GB in the beginning and 4.9 GB in the end (delta: 2.6 GB). Free memory was 2.1 GB in the beginning and 3.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 151]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 151). Cancelled while BasicCegarLoop was analyzing trace of length 545 with TraceHistMax 5,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 13 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 223.0s OverallTime, 14 OverallIterations, 5 TraceHistogramMax, 187.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2699 SDtfs, 33006 SDslu, 1983 SDs, 0 SdLazy, 31382 SolverSat, 3354 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 63.5s Time, PredicateUnifierStatistics: 20 DeclaredPredicates, 4083 GetRequests, 3802 SyntacticMatches, 7 SemanticMatches, 274 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1875 ImplicationChecksByTransitivity, 7.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2840occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 3.7s AbstIntTime, 11 AbstIntIterations, 10 AbstIntStrong, 0.9973604727063953 AbsIntWeakeningRatio, 0.08385956049507451 AbsIntAvgWeakeningVarsNumRemoved, 14.35741348825461 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 13 MinimizatonAttempts, 1167 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 12.7s InterpolantComputationTime, 4320 NumberOfCodeBlocks, 4320 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 4307 ConstructedInterpolants, 0 QuantifiedInterpolants, 15408825 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 3 PerfectInterpolantSequences, 3340/5123 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown