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/Problem16_label58_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 19:25:58,514 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 19:25:58,516 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 19:25:58,532 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 19:25:58,532 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 19:25:58,533 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 19:25:58,535 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 19:25:58,537 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 19:25:58,539 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 19:25:58,540 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 19:25:58,542 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 19:25:58,543 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 19:25:58,544 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 19:25:58,545 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 19:25:58,546 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 19:25:58,549 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 19:25:58,550 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 19:25:58,557 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 19:25:58,559 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 19:25:58,565 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 19:25:58,569 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 19:25:58,570 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 19:25:58,576 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 19:25:58,576 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 19:25:58,577 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 19:25:58,580 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 19:25:58,581 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 19:25:58,581 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 19:25:58,582 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 19:25:58,587 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 19:25:58,587 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 19:25:58,588 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-12 19:25:58,588 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-12 19:25:58,588 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-12 19:25:58,589 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-12 19:25:58,590 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-12 19:25:58,590 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 19:25:58,610 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 19:25:58,610 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 19:25:58,611 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 19:25:58,611 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 19:25:58,612 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 19:25:58,612 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 19:25:58,612 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 19:25:58,612 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 19:25:58,612 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 19:25:58,613 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 19:25:58,613 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 19:25:58,613 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 19:25:58,613 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 19:25:58,614 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 19:25:58,614 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 19:25:58,614 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 19:25:58,615 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 19:25:58,615 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 19:25:58,615 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 19:25:58,615 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 19:25:58,615 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 19:25:58,616 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 19:25:58,616 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 19:25:58,616 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 19:25:58,616 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 19:25:58,616 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 19:25:58,617 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 19:25:58,617 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 19:25:58,617 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 19:25:58,617 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 19:25:58,617 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 19:25:58,618 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 19:25:58,618 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 19:25:58,618 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 19:25:58,618 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 19:25:58,669 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 19:25:58,684 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 19:25:58,689 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 19:25:58,691 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 19:25:58,691 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 19:25:58,692 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label58_true-unreach-call.c [2018-11-12 19:25:58,764 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f5367730/f4cda3cd83e14346b24b71f33e1b8b9a/FLAGf9c0fe689 [2018-11-12 19:25:59,495 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 19:25:59,496 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem16_label58_true-unreach-call.c [2018-11-12 19:25:59,519 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f5367730/f4cda3cd83e14346b24b71f33e1b8b9a/FLAGf9c0fe689 [2018-11-12 19:25:59,535 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1f5367730/f4cda3cd83e14346b24b71f33e1b8b9a [2018-11-12 19:25:59,546 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 19:25:59,548 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 19:25:59,549 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 19:25:59,549 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 19:25:59,553 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 19:25:59,554 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 07:25:59" (1/1) ... [2018-11-12 19:25:59,557 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bc2efc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:25:59, skipping insertion in model container [2018-11-12 19:25:59,557 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 07:25:59" (1/1) ... [2018-11-12 19:25:59,568 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 19:25:59,661 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 19:26:00,600 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 19:26:00,606 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 19:26:00,868 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 19:26:00,889 INFO L193 MainTranslator]: Completed translation [2018-11-12 19:26:00,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:26:00 WrapperNode [2018-11-12 19:26:00,890 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 19:26:00,891 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 19:26:00,891 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 19:26:00,891 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 19:26:01,031 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:26:00" (1/1) ... [2018-11-12 19:26:01,082 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:26:00" (1/1) ... [2018-11-12 19:26:01,093 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 19:26:01,093 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 19:26:01,094 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 19:26:01,094 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 19:26:01,106 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:26:00" (1/1) ... [2018-11-12 19:26:01,106 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:26:00" (1/1) ... [2018-11-12 19:26:01,116 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:26:00" (1/1) ... [2018-11-12 19:26:01,117 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:26:00" (1/1) ... [2018-11-12 19:26:01,189 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:26:00" (1/1) ... [2018-11-12 19:26:01,217 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:26:00" (1/1) ... [2018-11-12 19:26:01,231 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:26:00" (1/1) ... [2018-11-12 19:26:01,243 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 19:26:01,244 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 19:26:01,244 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 19:26:01,245 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 19:26:01,246 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:26:00" (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 19:26:01,321 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-12 19:26:01,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 19:26:01,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 19:26:01,322 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-12 19:26:01,322 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-12 19:26:01,323 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-12 19:26:01,323 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-12 19:26:01,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 19:26:01,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 19:26:01,325 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 19:26:01,325 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 19:26:07,706 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 19:26:07,707 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 07:26:07 BoogieIcfgContainer [2018-11-12 19:26:07,707 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 19:26:07,708 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 19:26:07,708 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 19:26:07,712 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 19:26:07,712 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 07:25:59" (1/3) ... [2018-11-12 19:26:07,713 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eed6796 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 07:26:07, skipping insertion in model container [2018-11-12 19:26:07,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 07:26:00" (2/3) ... [2018-11-12 19:26:07,714 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eed6796 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 07:26:07, skipping insertion in model container [2018-11-12 19:26:07,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 07:26:07" (3/3) ... [2018-11-12 19:26:07,717 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label58_true-unreach-call.c [2018-11-12 19:26:07,728 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 19:26:07,741 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 19:26:07,759 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 19:26:07,809 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 19:26:07,810 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 19:26:07,810 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 19:26:07,810 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 19:26:07,810 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 19:26:07,810 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 19:26:07,810 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 19:26:07,811 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 19:26:07,843 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states. [2018-11-12 19:26:07,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-11-12 19:26:07,853 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:26:07,854 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 19:26:07,857 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:26:07,862 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:26:07,863 INFO L82 PathProgramCache]: Analyzing trace with hash -484315148, now seen corresponding path program 1 times [2018-11-12 19:26:07,865 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:26:07,915 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:26:07,916 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:26:07,916 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:26:07,916 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:26:08,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:26:08,331 WARN L179 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 19:26:08,466 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 19:26:08,469 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:26:08,469 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-12 19:26:08,469 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:26:08,477 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 19:26:08,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 19:26:08,494 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 19:26:08,497 INFO L87 Difference]: Start difference. First operand 410 states. Second operand 3 states. [2018-11-12 19:26:12,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:26:12,148 INFO L93 Difference]: Finished difference Result 1156 states and 2144 transitions. [2018-11-12 19:26:12,150 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 19:26:12,151 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 58 [2018-11-12 19:26:12,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:26:12,179 INFO L225 Difference]: With dead ends: 1156 [2018-11-12 19:26:12,179 INFO L226 Difference]: Without dead ends: 744 [2018-11-12 19:26:12,191 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 19:26:12,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2018-11-12 19:26:12,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2018-11-12 19:26:12,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-11-12 19:26:12,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1353 transitions. [2018-11-12 19:26:12,351 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1353 transitions. Word has length 58 [2018-11-12 19:26:12,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:26:12,352 INFO L480 AbstractCegarLoop]: Abstraction has 744 states and 1353 transitions. [2018-11-12 19:26:12,353 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 19:26:12,353 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1353 transitions. [2018-11-12 19:26:12,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2018-11-12 19:26:12,365 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:26:12,366 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:26:12,366 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:26:12,366 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:26:12,367 INFO L82 PathProgramCache]: Analyzing trace with hash 2051883855, now seen corresponding path program 1 times [2018-11-12 19:26:12,367 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:26:12,369 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:26:12,369 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:26:12,369 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:26:12,369 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:26:12,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:26:12,811 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 19:26:12,811 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 19:26:12,812 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 19:26:12,812 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:26:12,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 19:26:12,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 19:26:12,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 19:26:12,815 INFO L87 Difference]: Start difference. First operand 744 states and 1353 transitions. Second operand 6 states. [2018-11-12 19:26:19,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:26:19,525 INFO L93 Difference]: Finished difference Result 2184 states and 3997 transitions. [2018-11-12 19:26:19,528 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 19:26:19,528 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 151 [2018-11-12 19:26:19,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:26:19,544 INFO L225 Difference]: With dead ends: 2184 [2018-11-12 19:26:19,544 INFO L226 Difference]: Without dead ends: 1446 [2018-11-12 19:26:19,550 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-12 19:26:19,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1446 states. [2018-11-12 19:26:19,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1446 to 1425. [2018-11-12 19:26:19,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1425 states. [2018-11-12 19:26:19,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1425 states to 1425 states and 2267 transitions. [2018-11-12 19:26:19,625 INFO L78 Accepts]: Start accepts. Automaton has 1425 states and 2267 transitions. Word has length 151 [2018-11-12 19:26:19,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:26:19,626 INFO L480 AbstractCegarLoop]: Abstraction has 1425 states and 2267 transitions. [2018-11-12 19:26:19,626 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 19:26:19,626 INFO L276 IsEmpty]: Start isEmpty. Operand 1425 states and 2267 transitions. [2018-11-12 19:26:19,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2018-11-12 19:26:19,642 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:26:19,642 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-12 19:26:19,643 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:26:19,648 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:26:19,648 INFO L82 PathProgramCache]: Analyzing trace with hash -593361768, now seen corresponding path program 1 times [2018-11-12 19:26:19,648 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:26:19,649 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:26:19,649 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:26:19,650 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:26:19,650 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:26:19,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:26:19,996 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 102 proven. 88 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-12 19:26:19,996 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:26:19,996 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:26:19,997 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 263 with the following transitions: [2018-11-12 19:26:20,000 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [543], [545], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [764], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-12 19:26:20,054 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:26:20,054 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:26:21,032 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:26:21,035 INFO L272 AbstractInterpreter]: Visited 116 different actions 116 times. Never merged. Never widened. Performed 1920 root evaluator evaluations with a maximum evaluation depth of 6. Performed 1920 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Never found a fixpoint. Largest state had 24 variables. [2018-11-12 19:26:21,080 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:26:21,081 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:26:22,133 INFO L227 lantSequenceWeakener]: Weakened 240 states. On average, predicates are now at 78.13% of their original sizes. [2018-11-12 19:26:22,134 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:26:24,194 INFO L415 sIntCurrentIteration]: We unified 261 AI predicates to 261 [2018-11-12 19:26:24,194 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:26:24,197 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:26:24,198 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [6] total 14 [2018-11-12 19:26:24,198 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:26:24,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-12 19:26:24,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-12 19:26:24,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-11-12 19:26:24,199 INFO L87 Difference]: Start difference. First operand 1425 states and 2267 transitions. Second operand 10 states. [2018-11-12 19:26:29,093 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:26:49,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:26:49,555 INFO L93 Difference]: Finished difference Result 3187 states and 5096 transitions. [2018-11-12 19:26:49,555 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-12 19:26:49,555 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 262 [2018-11-12 19:26:49,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:26:49,566 INFO L225 Difference]: With dead ends: 3187 [2018-11-12 19:26:49,566 INFO L226 Difference]: Without dead ends: 1768 [2018-11-12 19:26:49,572 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 265 GetRequests, 233 SyntacticMatches, 20 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2018-11-12 19:26:49,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1768 states. [2018-11-12 19:26:49,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1768 to 1763. [2018-11-12 19:26:49,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1763 states. [2018-11-12 19:26:49,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1763 states to 1763 states and 2612 transitions. [2018-11-12 19:26:49,624 INFO L78 Accepts]: Start accepts. Automaton has 1763 states and 2612 transitions. Word has length 262 [2018-11-12 19:26:49,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:26:49,625 INFO L480 AbstractCegarLoop]: Abstraction has 1763 states and 2612 transitions. [2018-11-12 19:26:49,625 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-12 19:26:49,625 INFO L276 IsEmpty]: Start isEmpty. Operand 1763 states and 2612 transitions. [2018-11-12 19:26:49,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 355 [2018-11-12 19:26:49,638 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:26:49,638 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 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 19:26:49,638 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:26:49,640 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:26:49,640 INFO L82 PathProgramCache]: Analyzing trace with hash 260849530, now seen corresponding path program 1 times [2018-11-12 19:26:49,640 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:26:49,641 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:26:49,641 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:26:49,641 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:26:49,642 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:26:49,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:26:50,032 WARN L179 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 19:26:50,539 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 159 proven. 197 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-11-12 19:26:50,539 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:26:50,539 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:26:50,539 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 355 with the following transitions: [2018-11-12 19:26:50,540 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [543], [545], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [760], [761], [764], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-12 19:26:50,545 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:26:50,545 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:26:50,652 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:26:51,692 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:26:51,693 INFO L272 AbstractInterpreter]: Visited 120 different actions 347 times. Merged at 5 different actions 9 times. Never widened. Performed 5760 root evaluator evaluations with a maximum evaluation depth of 6. Performed 5760 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 19:26:51,720 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:26:51,721 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:26:52,627 INFO L227 lantSequenceWeakener]: Weakened 110 states. On average, predicates are now at 78.51% of their original sizes. [2018-11-12 19:26:52,628 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:26:54,810 INFO L415 sIntCurrentIteration]: We unified 353 AI predicates to 353 [2018-11-12 19:26:54,811 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:26:54,811 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:26:54,811 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [19] imperfect sequences [6] total 23 [2018-11-12 19:26:54,812 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:26:54,812 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-11-12 19:26:54,813 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-11-12 19:26:54,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2018-11-12 19:26:54,813 INFO L87 Difference]: Start difference. First operand 1763 states and 2612 transitions. Second operand 19 states. [2018-11-12 19:27:29,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:27:29,426 INFO L93 Difference]: Finished difference Result 4356 states and 6646 transitions. [2018-11-12 19:27:29,426 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-11-12 19:27:29,426 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 354 [2018-11-12 19:27:29,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:27:29,440 INFO L225 Difference]: With dead ends: 4356 [2018-11-12 19:27:29,440 INFO L226 Difference]: Without dead ends: 2937 [2018-11-12 19:27:29,445 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 363 GetRequests, 319 SyntacticMatches, 17 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 284 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=196, Invalid=616, Unknown=0, NotChecked=0, Total=812 [2018-11-12 19:27:29,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2937 states. [2018-11-12 19:27:29,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2937 to 2707. [2018-11-12 19:27:29,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2707 states. [2018-11-12 19:27:29,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2707 states to 2707 states and 3594 transitions. [2018-11-12 19:27:29,516 INFO L78 Accepts]: Start accepts. Automaton has 2707 states and 3594 transitions. Word has length 354 [2018-11-12 19:27:29,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:27:29,517 INFO L480 AbstractCegarLoop]: Abstraction has 2707 states and 3594 transitions. [2018-11-12 19:27:29,517 INFO L481 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-11-12 19:27:29,517 INFO L276 IsEmpty]: Start isEmpty. Operand 2707 states and 3594 transitions. [2018-11-12 19:27:29,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 391 [2018-11-12 19:27:29,527 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:27:29,527 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 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 19:27:29,528 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:27:29,528 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:27:29,528 INFO L82 PathProgramCache]: Analyzing trace with hash 2035569266, now seen corresponding path program 1 times [2018-11-12 19:27:29,528 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:27:29,529 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:27:29,529 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:27:29,530 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:27:29,530 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:27:29,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:27:29,830 WARN L179 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 19:27:30,372 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 159 proven. 217 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-11-12 19:27:30,372 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:27:30,373 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:27:30,373 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 391 with the following transitions: [2018-11-12 19:27:30,373 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [543], [545], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [764], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [904], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-12 19:27:30,383 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:27:30,383 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:27:30,486 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:27:30,903 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:27:30,903 INFO L272 AbstractInterpreter]: Visited 137 different actions 398 times. Merged at 5 different actions 9 times. Never widened. Performed 5969 root evaluator evaluations with a maximum evaluation depth of 6. Performed 5969 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 19:27:30,929 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:27:30,929 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:27:31,644 INFO L227 lantSequenceWeakener]: Weakened 87 states. On average, predicates are now at 77.64% of their original sizes. [2018-11-12 19:27:31,644 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:27:32,169 INFO L415 sIntCurrentIteration]: We unified 389 AI predicates to 389 [2018-11-12 19:27:32,169 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:27:32,170 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:27:32,170 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [6] total 21 [2018-11-12 19:27:32,170 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:27:32,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-12 19:27:32,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-12 19:27:32,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=206, Unknown=0, NotChecked=0, Total=272 [2018-11-12 19:27:32,172 INFO L87 Difference]: Start difference. First operand 2707 states and 3594 transitions. Second operand 17 states. [2018-11-12 19:28:10,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:28:10,842 INFO L93 Difference]: Finished difference Result 5628 states and 8152 transitions. [2018-11-12 19:28:10,842 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-11-12 19:28:10,843 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 390 [2018-11-12 19:28:10,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:28:10,860 INFO L225 Difference]: With dead ends: 5628 [2018-11-12 19:28:10,860 INFO L226 Difference]: Without dead ends: 3865 [2018-11-12 19:28:10,866 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 396 GetRequests, 372 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=128, Invalid=424, Unknown=0, NotChecked=0, Total=552 [2018-11-12 19:28:10,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3865 states. [2018-11-12 19:28:10,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3865 to 3390. [2018-11-12 19:28:10,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3390 states. [2018-11-12 19:28:10,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3390 states to 3390 states and 4310 transitions. [2018-11-12 19:28:10,956 INFO L78 Accepts]: Start accepts. Automaton has 3390 states and 4310 transitions. Word has length 390 [2018-11-12 19:28:10,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:28:10,956 INFO L480 AbstractCegarLoop]: Abstraction has 3390 states and 4310 transitions. [2018-11-12 19:28:10,957 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-12 19:28:10,957 INFO L276 IsEmpty]: Start isEmpty. Operand 3390 states and 4310 transitions. [2018-11-12 19:28:10,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 503 [2018-11-12 19:28:10,974 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:28:10,975 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:28:10,975 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:28:10,975 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:28:10,975 INFO L82 PathProgramCache]: Analyzing trace with hash 1800803474, now seen corresponding path program 1 times [2018-11-12 19:28:10,976 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:28:10,976 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:28:10,976 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:28:10,977 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:28:10,977 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:28:11,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:28:11,509 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 159 proven. 217 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-11-12 19:28:11,510 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:28:11,510 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:28:11,510 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 503 with the following transitions: [2018-11-12 19:28:11,510 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [543], [545], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [764], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1352], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-12 19:28:11,521 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:28:11,521 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:28:12,050 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:28:12,050 INFO L272 AbstractInterpreter]: Visited 249 different actions 494 times. Merged at 5 different actions 7 times. Never widened. Performed 8663 root evaluator evaluations with a maximum evaluation depth of 6. Performed 8663 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 19:28:12,058 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:28:12,058 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:28:12,591 INFO L227 lantSequenceWeakener]: Weakened 272 states. On average, predicates are now at 78.16% of their original sizes. [2018-11-12 19:28:12,591 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:28:14,684 INFO L415 sIntCurrentIteration]: We unified 501 AI predicates to 501 [2018-11-12 19:28:14,684 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:28:14,685 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:28:14,685 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [6] total 22 [2018-11-12 19:28:14,685 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:28:14,687 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-12 19:28:14,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-12 19:28:14,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2018-11-12 19:28:14,688 INFO L87 Difference]: Start difference. First operand 3390 states and 4310 transitions. Second operand 18 states. [2018-11-12 19:28:17,214 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:28:48,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:28:48,710 INFO L93 Difference]: Finished difference Result 6132 states and 8357 transitions. [2018-11-12 19:28:48,711 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-11-12 19:28:48,711 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 502 [2018-11-12 19:28:48,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:28:48,727 INFO L225 Difference]: With dead ends: 6132 [2018-11-12 19:28:48,727 INFO L226 Difference]: Without dead ends: 4026 [2018-11-12 19:28:48,734 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 517 GetRequests, 399 SyntacticMatches, 86 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 706 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=213, Invalid=909, Unknown=0, NotChecked=0, Total=1122 [2018-11-12 19:28:48,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4026 states. [2018-11-12 19:28:48,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4026 to 4021. [2018-11-12 19:28:48,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4021 states. [2018-11-12 19:28:48,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4021 states to 4021 states and 4975 transitions. [2018-11-12 19:28:48,836 INFO L78 Accepts]: Start accepts. Automaton has 4021 states and 4975 transitions. Word has length 502 [2018-11-12 19:28:48,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:28:48,837 INFO L480 AbstractCegarLoop]: Abstraction has 4021 states and 4975 transitions. [2018-11-12 19:28:48,837 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-12 19:28:48,837 INFO L276 IsEmpty]: Start isEmpty. Operand 4021 states and 4975 transitions. [2018-11-12 19:28:48,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 511 [2018-11-12 19:28:48,852 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:28:48,853 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:28:48,853 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:28:48,853 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:28:48,854 INFO L82 PathProgramCache]: Analyzing trace with hash -1664514302, now seen corresponding path program 1 times [2018-11-12 19:28:48,854 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:28:48,856 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:28:48,856 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:28:48,856 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:28:48,857 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:28:48,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:28:49,279 WARN L179 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 19:28:50,311 INFO L134 CoverageAnalysis]: Checked inductivity of 450 backedges. 159 proven. 217 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-11-12 19:28:50,311 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:28:50,311 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:28:50,312 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 511 with the following transitions: [2018-11-12 19:28:50,312 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [543], [545], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [764], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1384], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-12 19:28:50,317 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:28:50,317 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:28:52,543 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:28:52,543 INFO L272 AbstractInterpreter]: Visited 257 different actions 2265 times. Merged at 5 different actions 40 times. Widened at 1 different actions 4 times. Performed 40092 root evaluator evaluations with a maximum evaluation depth of 6. Performed 40092 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 19:28:52,553 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:28:52,553 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:28:53,548 INFO L227 lantSequenceWeakener]: Weakened 157 states. On average, predicates are now at 78.72% of their original sizes. [2018-11-12 19:28:53,548 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:28:53,892 INFO L415 sIntCurrentIteration]: We unified 509 AI predicates to 509 [2018-11-12 19:28:53,893 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:28:53,893 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:28:53,893 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [23] imperfect sequences [6] total 27 [2018-11-12 19:28:53,893 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:28:53,894 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-11-12 19:28:53,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-11-12 19:28:53,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=388, Unknown=0, NotChecked=0, Total=506 [2018-11-12 19:28:53,895 INFO L87 Difference]: Start difference. First operand 4021 states and 4975 transitions. Second operand 23 states. [2018-11-12 19:28:55,870 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:29:21,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:29:21,620 INFO L93 Difference]: Finished difference Result 6768 states and 9033 transitions. [2018-11-12 19:29:21,620 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-11-12 19:29:21,620 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 510 [2018-11-12 19:29:21,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:29:21,635 INFO L225 Difference]: With dead ends: 6768 [2018-11-12 19:29:21,635 INFO L226 Difference]: Without dead ends: 4662 [2018-11-12 19:29:21,641 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 522 GetRequests, 488 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=259, Invalid=1001, Unknown=0, NotChecked=0, Total=1260 [2018-11-12 19:29:21,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4662 states. [2018-11-12 19:29:21,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4662 to 4654. [2018-11-12 19:29:21,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4654 states. [2018-11-12 19:29:21,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4654 states to 4654 states and 5646 transitions. [2018-11-12 19:29:21,744 INFO L78 Accepts]: Start accepts. Automaton has 4654 states and 5646 transitions. Word has length 510 [2018-11-12 19:29:21,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:29:21,745 INFO L480 AbstractCegarLoop]: Abstraction has 4654 states and 5646 transitions. [2018-11-12 19:29:21,745 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-11-12 19:29:21,746 INFO L276 IsEmpty]: Start isEmpty. Operand 4654 states and 5646 transitions. [2018-11-12 19:29:21,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 595 [2018-11-12 19:29:21,768 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:29:21,768 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, 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, 3, 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] [2018-11-12 19:29:21,768 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:29:21,769 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:29:21,769 INFO L82 PathProgramCache]: Analyzing trace with hash 1608913780, now seen corresponding path program 1 times [2018-11-12 19:29:21,769 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:29:21,770 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:29:21,770 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:29:21,770 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:29:21,770 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:29:21,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:29:22,344 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-11-12 19:29:23,885 INFO L134 CoverageAnalysis]: Checked inductivity of 777 backedges. 304 proven. 200 refuted. 0 times theorem prover too weak. 273 trivial. 0 not checked. [2018-11-12 19:29:23,885 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:29:23,885 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:29:23,886 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 595 with the following transitions: [2018-11-12 19:29:23,886 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [543], [545], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [760], [761], [764], [765], [769], [773], [777], [781], [785], [789], [793], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1352], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-12 19:29:23,890 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:29:23,890 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:29:23,979 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 19:29:24,885 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 19:29:24,885 INFO L272 AbstractInterpreter]: Visited 250 different actions 992 times. Merged at 7 different actions 25 times. Never widened. Performed 17162 root evaluator evaluations with a maximum evaluation depth of 6. Performed 17162 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 5 fixpoints after 2 different actions. Largest state had 24 variables. [2018-11-12 19:29:24,891 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:29:24,891 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 19:29:25,404 INFO L227 lantSequenceWeakener]: Weakened 591 states. On average, predicates are now at 77.63% of their original sizes. [2018-11-12 19:29:25,405 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 19:29:25,523 INFO L415 sIntCurrentIteration]: We unified 593 AI predicates to 593 [2018-11-12 19:29:25,523 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 19:29:25,524 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 19:29:25,524 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [13] total 21 [2018-11-12 19:29:25,524 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 19:29:25,525 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-12 19:29:25,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-12 19:29:25,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2018-11-12 19:29:25,525 INFO L87 Difference]: Start difference. First operand 4654 states and 5646 transitions. Second operand 10 states. [2018-11-12 19:29:35,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 19:29:35,479 INFO L93 Difference]: Finished difference Result 7808 states and 10204 transitions. [2018-11-12 19:29:35,479 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-11-12 19:29:35,479 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 594 [2018-11-12 19:29:35,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 19:29:35,498 INFO L225 Difference]: With dead ends: 7808 [2018-11-12 19:29:35,498 INFO L226 Difference]: Without dead ends: 5362 [2018-11-12 19:29:35,504 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 601 GetRequests, 585 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 19:29:35,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5362 states. [2018-11-12 19:29:35,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5362 to 5348. [2018-11-12 19:29:35,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5348 states. [2018-11-12 19:29:35,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5348 states to 5348 states and 6388 transitions. [2018-11-12 19:29:35,620 INFO L78 Accepts]: Start accepts. Automaton has 5348 states and 6388 transitions. Word has length 594 [2018-11-12 19:29:35,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 19:29:35,621 INFO L480 AbstractCegarLoop]: Abstraction has 5348 states and 6388 transitions. [2018-11-12 19:29:35,622 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-12 19:29:35,622 INFO L276 IsEmpty]: Start isEmpty. Operand 5348 states and 6388 transitions. [2018-11-12 19:29:35,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 612 [2018-11-12 19:29:35,636 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 19:29:35,637 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:29:35,637 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 19:29:35,637 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 19:29:35,637 INFO L82 PathProgramCache]: Analyzing trace with hash 292794041, now seen corresponding path program 1 times [2018-11-12 19:29:35,638 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 19:29:35,638 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:29:35,639 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:29:35,639 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 19:29:35,639 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 19:29:35,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:29:36,011 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 19:29:36,231 INFO L134 CoverageAnalysis]: Checked inductivity of 796 backedges. 216 proven. 336 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2018-11-12 19:29:36,231 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:29:36,231 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 19:29:36,232 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 612 with the following transitions: [2018-11-12 19:29:36,232 INFO L202 CegarAbsIntRunner]: [0], [1], [180], [187], [195], [203], [211], [219], [227], [235], [243], [251], [259], [267], [275], [283], [291], [299], [307], [315], [323], [331], [339], [347], [355], [363], [371], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [523], [531], [539], [543], [545], [548], [556], [564], [572], [580], [588], [596], [604], [612], [620], [628], [636], [644], [652], [660], [668], [673], [677], [681], [685], [689], [693], [697], [701], [705], [709], [713], [717], [721], [725], [729], [733], [737], [741], [745], [749], [753], [757], [761], [764], [765], [769], [773], [777], [781], [785], [789], [793], [796], [797], [801], [805], [809], [813], [817], [821], [825], [829], [833], [836], [837], [841], [845], [849], [853], [857], [861], [865], [869], [873], [877], [881], [885], [889], [893], [897], [901], [905], [909], [913], [917], [921], [925], [929], [933], [937], [941], [945], [949], [953], [957], [961], [965], [969], [973], [977], [981], [985], [989], [993], [997], [1001], [1005], [1009], [1013], [1017], [1021], [1025], [1029], [1033], [1037], [1041], [1045], [1049], [1053], [1057], [1061], [1065], [1069], [1073], [1077], [1081], [1085], [1089], [1093], [1097], [1101], [1105], [1109], [1113], [1117], [1121], [1125], [1129], [1133], [1137], [1141], [1145], [1149], [1153], [1157], [1161], [1165], [1169], [1173], [1177], [1181], [1185], [1189], [1193], [1197], [1201], [1205], [1209], [1213], [1217], [1221], [1225], [1229], [1233], [1237], [1241], [1245], [1249], [1253], [1257], [1261], [1265], [1269], [1273], [1277], [1281], [1285], [1289], [1293], [1297], [1301], [1305], [1309], [1313], [1317], [1321], [1325], [1329], [1333], [1337], [1341], [1345], [1349], [1353], [1357], [1361], [1365], [1369], [1373], [1377], [1381], [1384], [1552], [1556], [1560], [1566], [1570], [1572], [1579], [1580], [1581], [1583], [1584] [2018-11-12 19:29:36,235 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 19:29:36,236 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 19:29:36,280 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-11-12 19:29:38,351 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-11-12 19:29:38,351 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-11-12 19:29:38,353 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-12 19:29:38,353 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 19:29:38,353 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 19:29:38,362 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 19:29:38,362 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 19:29:38,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 19:29:38,563 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 19:29:38,606 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-11-12 19:29:38,807 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-12 19:29:38,807 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-12 19:29:38,812 WARN L205 ceAbstractionStarter]: Timeout [2018-11-12 19:29:38,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 07:29:38 BoogieIcfgContainer [2018-11-12 19:29:38,812 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 19:29:38,813 INFO L168 Benchmark]: Toolchain (without parser) took 219266.38 ms. Allocated memory was 1.5 GB in the beginning and 4.6 GB in the end (delta: 3.0 GB). Free memory was 1.4 GB in the beginning and 2.6 GB in the end (delta: -1.1 GB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-11-12 19:29:38,814 INFO L168 Benchmark]: CDTParser took 0.21 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 19:29:38,815 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1341.33 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. [2018-11-12 19:29:38,815 INFO L168 Benchmark]: Boogie Procedure Inliner took 202.38 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 755.0 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -880.2 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. [2018-11-12 19:29:38,816 INFO L168 Benchmark]: Boogie Preprocessor took 150.34 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 19:29:38,817 INFO L168 Benchmark]: RCFGBuilder took 6463.03 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 253.0 MB). Peak memory consumption was 253.0 MB. Max. memory is 7.1 GB. [2018-11-12 19:29:38,821 INFO L168 Benchmark]: TraceAbstraction took 211104.27 ms. Allocated memory was 2.3 GB in the beginning and 4.6 GB in the end (delta: 2.3 GB). Free memory was 2.0 GB in the beginning and 2.6 GB in the end (delta: -585.6 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-11-12 19:29:38,828 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 1341.33 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 202.38 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 755.0 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -880.2 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 150.34 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 6463.03 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 253.0 MB). Peak memory consumption was 253.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 211104.27 ms. Allocated memory was 2.3 GB in the beginning and 4.6 GB in the end (delta: 2.3 GB). Free memory was 2.0 GB in the beginning and 2.6 GB in the end (delta: -585.6 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 160]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 160). Cancelled while BasicCegarLoop was analyzing trace of length 612 with TraceHistMax 5,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 6 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 410 locations, 1 error locations. TIMEOUT Result, 211.0s OverallTime, 9 OverallIterations, 5 TraceHistogramMax, 180.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2649 SDtfs, 21112 SDslu, 1638 SDs, 0 SdLazy, 27546 SolverSat, 4240 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 71.8s Time, PredicateUnifierStatistics: 12 DeclaredPredicates, 2679 GetRequests, 2400 SyntacticMatches, 128 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1601 ImplicationChecksByTransitivity, 8.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5348occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 8.7s AbstIntTime, 7 AbstIntIterations, 6 AbstIntStrong, 0.997755443973203 AbsIntWeakeningRatio, 0.07367613200306984 AbsIntAvgWeakeningVarsNumRemoved, 13.307367613200308 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 8 MinimizatonAttempts, 758 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 4.1s InterpolantComputationTime, 2821 NumberOfCodeBlocks, 2821 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 2813 ConstructedInterpolants, 0 QuantifiedInterpolants, 6561855 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 1667/2803 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown