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/Problem15_label22_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 16:34:26,705 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 16:34:26,708 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 16:34:26,721 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 16:34:26,721 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 16:34:26,722 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 16:34:26,723 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 16:34:26,725 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 16:34:26,727 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 16:34:26,728 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 16:34:26,729 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 16:34:26,729 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 16:34:26,730 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 16:34:26,731 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 16:34:26,733 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 16:34:26,734 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 16:34:26,734 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 16:34:26,736 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 16:34:26,739 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 16:34:26,740 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 16:34:26,742 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 16:34:26,743 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 16:34:26,745 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 16:34:26,745 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 16:34:26,746 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 16:34:26,746 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 16:34:26,747 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 16:34:26,748 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 16:34:26,749 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 16:34:26,750 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 16:34:26,750 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 16:34:26,751 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-11-12 16:34:26,754 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 16:34:26,782 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 16:34:26,783 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 16:34:26,784 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 16:34:26,784 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 16:34:26,784 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 16:34:26,784 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 16:34:26,784 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 16:34:26,787 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 16:34:26,787 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 16:34:26,788 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 16:34:26,788 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 16:34:26,788 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 16:34:26,788 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 16:34:26,789 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 16:34:26,789 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 16:34:26,789 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 16:34:26,790 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 16:34:26,790 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 16:34:26,790 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 16:34:26,790 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 16:34:26,790 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 16:34:26,791 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 16:34:26,791 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 16:34:26,791 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 16:34:26,791 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 16:34:26,791 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 16:34:26,792 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 16:34:26,794 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 16:34:26,794 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 16:34:26,794 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 16:34:26,794 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 16:34:26,794 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 16:34:26,795 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 16:34:26,795 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 16:34:26,795 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 16:34:26,846 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 16:34:26,861 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 16:34:26,865 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 16:34:26,867 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 16:34:26,867 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 16:34:26,868 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label22_false-unreach-call.c [2018-11-12 16:34:26,942 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce143af9e/6b223ab3ed5d44f09816af2578a7b87e/FLAG4e2ea0c66 [2018-11-12 16:34:27,570 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 16:34:27,571 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label22_false-unreach-call.c [2018-11-12 16:34:27,589 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce143af9e/6b223ab3ed5d44f09816af2578a7b87e/FLAG4e2ea0c66 [2018-11-12 16:34:27,605 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce143af9e/6b223ab3ed5d44f09816af2578a7b87e [2018-11-12 16:34:27,617 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 16:34:27,619 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 16:34:27,620 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 16:34:27,620 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 16:34:27,624 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 16:34:27,625 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:34:27" (1/1) ... [2018-11-12 16:34:27,628 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1505bcf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:34:27, skipping insertion in model container [2018-11-12 16:34:27,628 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:34:27" (1/1) ... [2018-11-12 16:34:27,639 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 16:34:27,727 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 16:34:28,510 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 16:34:28,516 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 16:34:28,817 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 16:34:28,841 INFO L193 MainTranslator]: Completed translation [2018-11-12 16:34:28,842 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:34:28 WrapperNode [2018-11-12 16:34:28,842 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 16:34:28,843 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 16:34:28,844 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 16:34:28,844 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 16:34:28,854 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:34:28" (1/1) ... [2018-11-12 16:34:29,050 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:34:28" (1/1) ... [2018-11-12 16:34:29,067 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 16:34:29,068 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 16:34:29,068 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 16:34:29,068 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 16:34:29,080 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:34:28" (1/1) ... [2018-11-12 16:34:29,080 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:34:28" (1/1) ... [2018-11-12 16:34:29,089 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:34:28" (1/1) ... [2018-11-12 16:34:29,090 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:34:28" (1/1) ... [2018-11-12 16:34:29,158 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:34:28" (1/1) ... [2018-11-12 16:34:29,174 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:34:28" (1/1) ... [2018-11-12 16:34:29,202 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:34:28" (1/1) ... [2018-11-12 16:34:29,227 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 16:34:29,228 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 16:34:29,228 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 16:34:29,228 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 16:34:29,229 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:34:28" (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 16:34:29,298 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-12 16:34:29,298 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 16:34:29,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 16:34:29,299 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-12 16:34:29,299 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-12 16:34:29,299 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-12 16:34:29,299 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-12 16:34:29,299 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 16:34:29,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 16:34:29,300 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 16:34:29,300 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 16:34:34,988 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 16:34:34,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:34:34 BoogieIcfgContainer [2018-11-12 16:34:34,989 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 16:34:34,991 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 16:34:34,991 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 16:34:34,995 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 16:34:34,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 04:34:27" (1/3) ... [2018-11-12 16:34:34,996 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1eaa23a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:34:34, skipping insertion in model container [2018-11-12 16:34:34,996 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:34:28" (2/3) ... [2018-11-12 16:34:34,996 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1eaa23a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:34:34, skipping insertion in model container [2018-11-12 16:34:34,997 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:34:34" (3/3) ... [2018-11-12 16:34:34,999 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label22_false-unreach-call.c [2018-11-12 16:34:35,009 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 16:34:35,018 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 16:34:35,032 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 16:34:35,074 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 16:34:35,074 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 16:34:35,075 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 16:34:35,075 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 16:34:35,075 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 16:34:35,075 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 16:34:35,075 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 16:34:35,076 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 16:34:35,116 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-11-12 16:34:35,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-12 16:34:35,122 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:34:35,123 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] [2018-11-12 16:34:35,126 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:34:35,132 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:34:35,132 INFO L82 PathProgramCache]: Analyzing trace with hash 417311457, now seen corresponding path program 1 times [2018-11-12 16:34:35,134 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:34:35,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:34:35,186 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:34:35,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:34:35,186 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:34:35,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:34:35,584 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 16:34:35,586 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:34:35,586 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-12 16:34:35,586 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:34:35,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-12 16:34:35,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-12 16:34:35,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 16:34:35,607 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 4 states. [2018-11-12 16:34:43,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:34:43,152 INFO L93 Difference]: Finished difference Result 1558 states and 2849 transitions. [2018-11-12 16:34:43,153 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-12 16:34:43,154 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2018-11-12 16:34:43,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:34:43,180 INFO L225 Difference]: With dead ends: 1558 [2018-11-12 16:34:43,180 INFO L226 Difference]: Without dead ends: 1114 [2018-11-12 16:34:43,189 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 16:34:43,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1114 states. [2018-11-12 16:34:43,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1114 to 1091. [2018-11-12 16:34:43,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1091 states. [2018-11-12 16:34:43,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1091 states to 1091 states and 1853 transitions. [2018-11-12 16:34:43,315 INFO L78 Accepts]: Start accepts. Automaton has 1091 states and 1853 transitions. Word has length 25 [2018-11-12 16:34:43,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:34:43,316 INFO L480 AbstractCegarLoop]: Abstraction has 1091 states and 1853 transitions. [2018-11-12 16:34:43,316 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-12 16:34:43,316 INFO L276 IsEmpty]: Start isEmpty. Operand 1091 states and 1853 transitions. [2018-11-12 16:34:43,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-11-12 16:34:43,322 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:34:43,323 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-12 16:34:43,324 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:34:43,324 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:34:43,326 INFO L82 PathProgramCache]: Analyzing trace with hash -764927732, now seen corresponding path program 1 times [2018-11-12 16:34:43,326 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:34:43,327 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:34:43,327 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:34:43,327 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:34:43,328 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:34:43,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:34:43,609 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:34:43,609 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:34:43,609 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-12 16:34:43,609 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:34:43,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-12 16:34:43,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-12 16:34:43,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-12 16:34:43,612 INFO L87 Difference]: Start difference. First operand 1091 states and 1853 transitions. Second operand 5 states. [2018-11-12 16:34:49,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:34:49,496 INFO L93 Difference]: Finished difference Result 3246 states and 5588 transitions. [2018-11-12 16:34:49,496 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-12 16:34:49,496 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2018-11-12 16:34:49,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:34:49,513 INFO L225 Difference]: With dead ends: 3246 [2018-11-12 16:34:49,514 INFO L226 Difference]: Without dead ends: 2161 [2018-11-12 16:34:49,520 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-12 16:34:49,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2161 states. [2018-11-12 16:34:49,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2161 to 2114. [2018-11-12 16:34:49,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2114 states. [2018-11-12 16:34:49,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2114 states to 2114 states and 3176 transitions. [2018-11-12 16:34:49,599 INFO L78 Accepts]: Start accepts. Automaton has 2114 states and 3176 transitions. Word has length 98 [2018-11-12 16:34:49,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:34:49,600 INFO L480 AbstractCegarLoop]: Abstraction has 2114 states and 3176 transitions. [2018-11-12 16:34:49,600 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-12 16:34:49,600 INFO L276 IsEmpty]: Start isEmpty. Operand 2114 states and 3176 transitions. [2018-11-12 16:34:49,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-11-12 16:34:49,604 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:34:49,605 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:34:49,605 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:34:49,605 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:34:49,606 INFO L82 PathProgramCache]: Analyzing trace with hash -349048548, now seen corresponding path program 1 times [2018-11-12 16:34:49,606 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:34:49,607 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:34:49,607 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:34:49,607 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:34:49,607 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:34:49,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:34:49,791 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:34:49,791 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:34:49,791 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-12 16:34:49,791 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:34:49,792 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-12 16:34:49,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-12 16:34:49,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 16:34:49,792 INFO L87 Difference]: Start difference. First operand 2114 states and 3176 transitions. Second operand 4 states. [2018-11-12 16:34:55,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:34:55,118 INFO L93 Difference]: Finished difference Result 7944 states and 12441 transitions. [2018-11-12 16:34:55,119 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-12 16:34:55,119 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 106 [2018-11-12 16:34:55,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:34:55,161 INFO L225 Difference]: With dead ends: 7944 [2018-11-12 16:34:55,162 INFO L226 Difference]: Without dead ends: 5836 [2018-11-12 16:34:55,189 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 16:34:55,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5836 states. [2018-11-12 16:34:55,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5836 to 5834. [2018-11-12 16:34:55,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5834 states. [2018-11-12 16:34:55,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5834 states to 5834 states and 8173 transitions. [2018-11-12 16:34:55,366 INFO L78 Accepts]: Start accepts. Automaton has 5834 states and 8173 transitions. Word has length 106 [2018-11-12 16:34:55,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:34:55,366 INFO L480 AbstractCegarLoop]: Abstraction has 5834 states and 8173 transitions. [2018-11-12 16:34:55,367 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-12 16:34:55,367 INFO L276 IsEmpty]: Start isEmpty. Operand 5834 states and 8173 transitions. [2018-11-12 16:34:55,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2018-11-12 16:34:55,381 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:34:55,382 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:34:55,382 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:34:55,382 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:34:55,383 INFO L82 PathProgramCache]: Analyzing trace with hash -1121522118, now seen corresponding path program 1 times [2018-11-12 16:34:55,383 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:34:55,384 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:34:55,384 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:34:55,384 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:34:55,384 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:34:55,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:34:55,753 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 16:34:56,111 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 36 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-12 16:34:56,111 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:34:56,112 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:34:56,113 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 196 with the following transitions: [2018-11-12 16:34:56,116 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [173], [175], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [566], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [714], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-12 16:34:56,165 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:34:56,166 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:34:56,723 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:34:56,724 INFO L272 AbstractInterpreter]: Visited 105 different actions 105 times. Never merged. Never widened. Performed 993 root evaluator evaluations with a maximum evaluation depth of 4. Performed 993 inverse root evaluator evaluations with a maximum inverse evaluation depth of 4. Never found a fixpoint. Largest state had 24 variables. [2018-11-12 16:34:56,771 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:34:56,771 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:34:57,249 INFO L227 lantSequenceWeakener]: Weakened 186 states. On average, predicates are now at 77.43% of their original sizes. [2018-11-12 16:34:57,250 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:34:57,699 INFO L415 sIntCurrentIteration]: We unified 194 AI predicates to 194 [2018-11-12 16:34:57,700 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:34:57,701 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:34:57,701 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [6] total 12 [2018-11-12 16:34:57,701 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:34:57,702 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-12 16:34:57,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-12 16:34:57,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-12 16:34:57,703 INFO L87 Difference]: Start difference. First operand 5834 states and 8173 transitions. Second operand 8 states. [2018-11-12 16:35:01,032 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:35:35,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:35:35,826 INFO L93 Difference]: Finished difference Result 11972 states and 16730 transitions. [2018-11-12 16:35:35,827 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-12 16:35:35,827 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 195 [2018-11-12 16:35:35,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:35:35,862 INFO L225 Difference]: With dead ends: 11972 [2018-11-12 16:35:35,862 INFO L226 Difference]: Without dead ends: 6144 [2018-11-12 16:35:35,894 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 196 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-12 16:35:35,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6144 states. [2018-11-12 16:35:36,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6144 to 6142. [2018-11-12 16:35:36,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6142 states. [2018-11-12 16:35:36,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6142 states to 6142 states and 8490 transitions. [2018-11-12 16:35:36,066 INFO L78 Accepts]: Start accepts. Automaton has 6142 states and 8490 transitions. Word has length 195 [2018-11-12 16:35:36,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:35:36,067 INFO L480 AbstractCegarLoop]: Abstraction has 6142 states and 8490 transitions. [2018-11-12 16:35:36,067 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-12 16:35:36,067 INFO L276 IsEmpty]: Start isEmpty. Operand 6142 states and 8490 transitions. [2018-11-12 16:35:36,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2018-11-12 16:35:36,076 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:35:36,077 INFO L375 BasicCegarLoop]: trace histogram [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, 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] [2018-11-12 16:35:36,077 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:35:36,078 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:35:36,078 INFO L82 PathProgramCache]: Analyzing trace with hash 138024112, now seen corresponding path program 1 times [2018-11-12 16:35:36,078 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:35:36,079 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:35:36,079 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:35:36,079 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:35:36,080 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:35:36,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:35:36,439 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 16:35:36,542 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 60 proven. 212 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-12 16:35:36,543 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:35:36,543 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:35:36,543 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 292 with the following transitions: [2018-11-12 16:35:36,544 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [173], [175], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [566], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [692], [696], [707], [711], [714], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-12 16:35:36,549 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:35:36,549 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:35:36,619 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:35:37,755 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:35:37,755 INFO L272 AbstractInterpreter]: Visited 109 different actions 727 times. Merged at 5 different actions 30 times. Widened at 1 different actions 2 times. Performed 11347 root evaluator evaluations with a maximum evaluation depth of 6. Performed 11347 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 16:35:37,796 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:35:37,796 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:35:38,420 INFO L227 lantSequenceWeakener]: Weakened 68 states. On average, predicates are now at 78.07% of their original sizes. [2018-11-12 16:35:38,421 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:35:39,756 INFO L415 sIntCurrentIteration]: We unified 290 AI predicates to 290 [2018-11-12 16:35:39,756 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:35:39,756 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:35:39,757 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [6] total 23 [2018-11-12 16:35:39,757 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:35:39,758 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-11-12 16:35:39,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-11-12 16:35:39,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2018-11-12 16:35:39,759 INFO L87 Difference]: Start difference. First operand 6142 states and 8490 transitions. Second operand 19 states. [2018-11-12 16:36:27,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:36:27,362 INFO L93 Difference]: Finished difference Result 13412 states and 18385 transitions. [2018-11-12 16:36:27,362 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-11-12 16:36:27,362 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 291 [2018-11-12 16:36:27,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:36:27,411 INFO L225 Difference]: With dead ends: 13412 [2018-11-12 16:36:27,411 INFO L226 Difference]: Without dead ends: 7584 [2018-11-12 16:36:27,447 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 304 GetRequests, 270 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=246, Invalid=810, Unknown=0, NotChecked=0, Total=1056 [2018-11-12 16:36:27,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7584 states. [2018-11-12 16:36:27,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7584 to 7075. [2018-11-12 16:36:27,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7075 states. [2018-11-12 16:36:27,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7075 states to 7075 states and 9462 transitions. [2018-11-12 16:36:27,631 INFO L78 Accepts]: Start accepts. Automaton has 7075 states and 9462 transitions. Word has length 291 [2018-11-12 16:36:27,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:36:27,632 INFO L480 AbstractCegarLoop]: Abstraction has 7075 states and 9462 transitions. [2018-11-12 16:36:27,632 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-11-12 16:36:27,632 INFO L276 IsEmpty]: Start isEmpty. Operand 7075 states and 9462 transitions. [2018-11-12 16:36:27,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2018-11-12 16:36:27,642 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:36:27,643 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:36:27,643 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:36:27,643 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:36:27,643 INFO L82 PathProgramCache]: Analyzing trace with hash -983454560, now seen corresponding path program 1 times [2018-11-12 16:36:27,644 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:36:27,644 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:36:27,645 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:36:27,645 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:36:27,645 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:36:27,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:36:28,480 WARN L179 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 13 [2018-11-12 16:36:28,838 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-11-12 16:36:28,839 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:36:28,839 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:36:28,839 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 383 with the following transitions: [2018-11-12 16:36:28,840 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [173], [175], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [566], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1562], [1566], [1570], [1581], [1585], [1589], [1593], [1597], [1601], [1612], [1616], [1620], [1623], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-12 16:36:28,849 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:36:28,849 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:36:29,072 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:36:29,576 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 16:36:29,576 INFO L272 AbstractInterpreter]: Visited 296 different actions 882 times. Merged at 7 different actions 18 times. Never widened. Performed 12991 root evaluator evaluations with a maximum evaluation depth of 6. Performed 12991 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 3 fixpoints after 3 different actions. Largest state had 24 variables. [2018-11-12 16:36:29,584 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:36:29,585 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 16:36:29,585 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:36:29,585 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 16:36:29,597 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:36:29,597 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 16:36:29,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:36:29,728 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 16:36:54,972 WARN L179 SmtUtils]: Spent 24.57 s on a formula simplification. DAG size of input: 472 DAG size of output: 156 [2018-11-12 16:36:57,535 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 9 proven. 30 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-11-12 16:36:57,535 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 16:36:58,049 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-11-12 16:36:58,083 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-11-12 16:36:58,084 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7, 6] total 11 [2018-11-12 16:36:58,084 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:36:58,086 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 16:36:58,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 16:36:58,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=77, Unknown=1, NotChecked=0, Total=110 [2018-11-12 16:36:58,087 INFO L87 Difference]: Start difference. First operand 7075 states and 9462 transitions. Second operand 3 states. [2018-11-12 16:37:02,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:37:02,158 INFO L93 Difference]: Finished difference Result 19393 states and 27180 transitions. [2018-11-12 16:37:02,159 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 16:37:02,159 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 382 [2018-11-12 16:37:02,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:37:02,208 INFO L225 Difference]: With dead ends: 19393 [2018-11-12 16:37:02,208 INFO L226 Difference]: Without dead ends: 9497 [2018-11-12 16:37:02,259 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 774 GetRequests, 761 SyntacticMatches, 4 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 28.1s TimeCoverageRelationStatistics Valid=32, Invalid=77, Unknown=1, NotChecked=0, Total=110 [2018-11-12 16:37:02,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9497 states. [2018-11-12 16:37:02,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9497 to 9497. [2018-11-12 16:37:02,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9497 states. [2018-11-12 16:37:02,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9497 states to 9497 states and 12013 transitions. [2018-11-12 16:37:02,496 INFO L78 Accepts]: Start accepts. Automaton has 9497 states and 12013 transitions. Word has length 382 [2018-11-12 16:37:02,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:37:02,497 INFO L480 AbstractCegarLoop]: Abstraction has 9497 states and 12013 transitions. [2018-11-12 16:37:02,497 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 16:37:02,497 INFO L276 IsEmpty]: Start isEmpty. Operand 9497 states and 12013 transitions. [2018-11-12 16:37:02,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 513 [2018-11-12 16:37:02,527 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:37:02,528 INFO L375 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:37:02,528 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:37:02,529 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:37:02,529 INFO L82 PathProgramCache]: Analyzing trace with hash -1057795027, now seen corresponding path program 1 times [2018-11-12 16:37:02,529 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:37:02,530 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:37:02,530 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:37:02,530 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:37:02,531 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:37:02,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:37:03,411 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 182 proven. 72 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-11-12 16:37:03,411 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:37:03,411 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:37:03,412 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 513 with the following transitions: [2018-11-12 16:37:03,412 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [173], [175], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [585], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [842], [847], [849], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1562], [1566], [1570], [1581], [1585], [1589], [1593], [1597], [1601], [1612], [1616], [1620], [1623], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-12 16:37:03,419 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:37:03,420 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:37:03,850 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:37:03,850 INFO L272 AbstractInterpreter]: Visited 296 different actions 586 times. Merged at 5 different actions 5 times. Never widened. Performed 7994 root evaluator evaluations with a maximum evaluation depth of 6. Performed 7994 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 16:37:03,857 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:37:03,857 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:37:04,543 INFO L227 lantSequenceWeakener]: Weakened 105 states. On average, predicates are now at 79.72% of their original sizes. [2018-11-12 16:37:04,544 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:37:05,065 INFO L415 sIntCurrentIteration]: We unified 511 AI predicates to 511 [2018-11-12 16:37:05,066 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:37:05,066 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:37:05,066 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [21] imperfect sequences [6] total 25 [2018-11-12 16:37:05,067 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:37:05,068 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-11-12 16:37:05,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-11-12 16:37:05,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2018-11-12 16:37:05,069 INFO L87 Difference]: Start difference. First operand 9497 states and 12013 transitions. Second operand 21 states. [2018-11-12 16:37:10,822 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:37:45,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:37:45,484 INFO L93 Difference]: Finished difference Result 18990 states and 24203 transitions. [2018-11-12 16:37:45,484 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-11-12 16:37:45,484 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 512 [2018-11-12 16:37:45,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:37:45,525 INFO L225 Difference]: With dead ends: 18990 [2018-11-12 16:37:45,525 INFO L226 Difference]: Without dead ends: 10414 [2018-11-12 16:37:45,554 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 526 GetRequests, 492 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=243, Invalid=1017, Unknown=0, NotChecked=0, Total=1260 [2018-11-12 16:37:45,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10414 states. [2018-11-12 16:37:45,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10414 to 9807. [2018-11-12 16:37:45,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9807 states. [2018-11-12 16:37:45,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9807 states to 9807 states and 12331 transitions. [2018-11-12 16:37:45,767 INFO L78 Accepts]: Start accepts. Automaton has 9807 states and 12331 transitions. Word has length 512 [2018-11-12 16:37:45,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:37:45,768 INFO L480 AbstractCegarLoop]: Abstraction has 9807 states and 12331 transitions. [2018-11-12 16:37:45,769 INFO L481 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-11-12 16:37:45,769 INFO L276 IsEmpty]: Start isEmpty. Operand 9807 states and 12331 transitions. [2018-11-12 16:37:45,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 528 [2018-11-12 16:37:45,791 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:37:45,792 INFO L375 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:37:45,793 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:37:45,793 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:37:45,793 INFO L82 PathProgramCache]: Analyzing trace with hash -709305353, now seen corresponding path program 1 times [2018-11-12 16:37:45,793 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:37:45,794 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:37:45,794 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:37:45,795 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:37:45,795 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:37:45,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:37:46,303 INFO L134 CoverageAnalysis]: Checked inductivity of 393 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 333 trivial. 0 not checked. [2018-11-12 16:37:46,304 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:37:46,304 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-12 16:37:46,304 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:37:46,305 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 16:37:46,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 16:37:46,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 16:37:46,305 INFO L87 Difference]: Start difference. First operand 9807 states and 12331 transitions. Second operand 3 states. [2018-11-12 16:37:48,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:37:48,636 INFO L93 Difference]: Finished difference Result 23317 states and 30824 transitions. [2018-11-12 16:37:48,637 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 16:37:48,637 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 527 [2018-11-12 16:37:48,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:37:48,707 INFO L225 Difference]: With dead ends: 23317 [2018-11-12 16:37:48,708 INFO L226 Difference]: Without dead ends: 14741 [2018-11-12 16:37:48,748 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 1 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 16:37:48,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14741 states. [2018-11-12 16:37:49,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14741 to 14741. [2018-11-12 16:37:49,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14741 states. [2018-11-12 16:37:49,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14741 states to 14741 states and 18780 transitions. [2018-11-12 16:37:49,055 INFO L78 Accepts]: Start accepts. Automaton has 14741 states and 18780 transitions. Word has length 527 [2018-11-12 16:37:49,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:37:49,056 INFO L480 AbstractCegarLoop]: Abstraction has 14741 states and 18780 transitions. [2018-11-12 16:37:49,057 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 16:37:49,057 INFO L276 IsEmpty]: Start isEmpty. Operand 14741 states and 18780 transitions. [2018-11-12 16:37:49,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 562 [2018-11-12 16:37:49,086 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:37:49,086 INFO L375 BasicCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:37:49,086 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:37:49,087 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:37:49,087 INFO L82 PathProgramCache]: Analyzing trace with hash 1887349557, now seen corresponding path program 1 times [2018-11-12 16:37:49,087 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:37:49,088 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:37:49,088 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:37:49,088 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:37:49,088 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:37:49,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:37:50,066 WARN L179 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 13 [2018-11-12 16:37:50,465 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2018-11-12 16:37:51,386 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 386 proven. 32 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2018-11-12 16:37:51,387 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:37:51,387 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:37:51,387 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 562 with the following transitions: [2018-11-12 16:37:51,388 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [173], [175], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [585], [586], [590], [594], [597], [598], [602], [606], [610], [614], [618], [622], [626], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [755], [759], [762], [763], [767], [771], [775], [779], [783], [787], [798], [809], [813], [824], [835], [839], [850], [854], [865], [869], [873], [877], [881], [885], [896], [900], [904], [908], [912], [916], [920], [924], [935], [939], [943], [947], [951], [955], [959], [963], [967], [971], [975], [979], [983], [987], [991], [1002], [1006], [1010], [1014], [1018], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1072], [1076], [1080], [1084], [1088], [1092], [1096], [1100], [1104], [1108], [1112], [1116], [1120], [1124], [1128], [1132], [1136], [1140], [1144], [1148], [1152], [1156], [1160], [1164], [1168], [1172], [1176], [1180], [1191], [1202], [1206], [1210], [1214], [1218], [1229], [1233], [1237], [1241], [1245], [1256], [1260], [1264], [1268], [1272], [1276], [1280], [1284], [1288], [1292], [1296], [1300], [1304], [1308], [1312], [1316], [1320], [1324], [1328], [1332], [1336], [1340], [1344], [1348], [1352], [1356], [1367], [1371], [1375], [1379], [1383], [1394], [1398], [1402], [1406], [1417], [1421], [1425], [1429], [1433], [1437], [1441], [1452], [1456], [1460], [1471], [1475], [1486], [1490], [1494], [1498], [1502], [1506], [1510], [1514], [1518], [1522], [1526], [1530], [1534], [1538], [1542], [1546], [1550], [1554], [1558], [1561], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-11-12 16:37:51,394 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:37:51,395 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:37:51,442 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:37:52,681 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 16:37:52,681 INFO L272 AbstractInterpreter]: Visited 286 different actions 1129 times. Merged at 7 different actions 20 times. Never widened. Performed 18468 root evaluator evaluations with a maximum evaluation depth of 6. Performed 18468 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 4 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-12 16:37:52,688 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:37:52,688 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 16:37:52,688 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:37:52,688 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 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 16:37:52,699 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:37:52,699 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 16:37:52,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:37:52,855 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 16:37:53,107 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 425 proven. 2 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2018-11-12 16:37:53,107 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 16:37:53,489 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 235 proven. 72 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2018-11-12 16:37:53,510 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 16:37:53,511 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2018-11-12 16:37:53,511 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 16:37:53,512 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-12 16:37:53,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-12 16:37:53,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2018-11-12 16:37:53,512 INFO L87 Difference]: Start difference. First operand 14741 states and 18780 transitions. Second operand 10 states. Received shutdown request... [2018-11-12 16:37:59,731 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-11-12 16:37:59,732 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-12 16:37:59,737 WARN L205 ceAbstractionStarter]: Timeout [2018-11-12 16:37:59,738 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 04:37:59 BoogieIcfgContainer [2018-11-12 16:37:59,738 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 16:37:59,738 INFO L168 Benchmark]: Toolchain (without parser) took 212120.99 ms. Allocated memory was 1.5 GB in the beginning and 4.5 GB in the end (delta: 2.9 GB). Free memory was 1.4 GB in the beginning and 2.6 GB in the end (delta: -1.2 GB). Peak memory consumption was 1.8 GB. Max. memory is 7.1 GB. [2018-11-12 16:37:59,740 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-12 16:37:59,740 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1222.67 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 105.7 MB). Peak memory consumption was 105.7 MB. Max. memory is 7.1 GB. [2018-11-12 16:37:59,741 INFO L168 Benchmark]: Boogie Procedure Inliner took 223.98 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 756.5 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -899.5 MB). Peak memory consumption was 31.4 MB. Max. memory is 7.1 GB. [2018-11-12 16:37:59,742 INFO L168 Benchmark]: Boogie Preprocessor took 159.79 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2018-11-12 16:37:59,743 INFO L168 Benchmark]: RCFGBuilder took 5761.61 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 288.4 MB). Peak memory consumption was 288.4 MB. Max. memory is 7.1 GB. [2018-11-12 16:37:59,743 INFO L168 Benchmark]: TraceAbstraction took 204746.96 ms. Allocated memory was 2.3 GB in the beginning and 4.5 GB in the end (delta: 2.2 GB). Free memory was 1.9 GB in the beginning and 2.6 GB in the end (delta: -701.3 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-11-12 16:37:59,748 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1222.67 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 105.7 MB). Peak memory consumption was 105.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 223.98 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 756.5 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -899.5 MB). Peak memory consumption was 31.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 159.79 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 5761.61 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 288.4 MB). Peak memory consumption was 288.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 204746.96 ms. Allocated memory was 2.3 GB in the beginning and 4.5 GB in the end (delta: 2.2 GB). Free memory was 1.9 GB in the beginning and 2.6 GB in the end (delta: -701.3 MB). 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: 61]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 61). Cancelled while BasicCegarLoop was constructing difference of abstraction (14741states) and FLOYD_HOARE automaton (currently 28 states, 10 states before enhancement),while ReachableStatesComputation was computing reachable states (17443 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 204.6s OverallTime, 9 OverallIterations, 5 TraceHistogramMax, 158.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3800 SDtfs, 17183 SDslu, 2721 SDs, 0 SdLazy, 24060 SolverSat, 3702 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 72.9s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 2998 GetRequests, 2863 SyntacticMatches, 12 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 795 ImplicationChecksByTransitivity, 33.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=14741occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 4.4s AbstIntTime, 5 AbstIntIterations, 3 AbstIntStrong, 0.997401977643575 AbsIntWeakeningRatio, 0.09045226130653267 AbsIntAvgWeakeningVarsNumRemoved, 17.01608040201005 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.4s AutomataMinimizationTime, 8 MinimizatonAttempts, 1190 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 33.8s InterpolantComputationTime, 3640 NumberOfCodeBlocks, 3640 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 4570 ConstructedInterpolants, 21 QuantifiedInterpolants, 5472881 SizeOfPredicates, 4 NumberOfNonLiveVariables, 1379 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 13 InterpolantComputations, 5 PerfectInterpolantSequences, 2609/3133 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown