java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label16_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-24 01:42:13,637 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 01:42:13,640 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 01:42:13,652 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 01:42:13,652 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 01:42:13,653 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 01:42:13,658 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 01:42:13,660 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 01:42:13,662 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 01:42:13,669 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 01:42:13,670 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 01:42:13,670 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 01:42:13,673 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 01:42:13,674 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 01:42:13,678 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 01:42:13,679 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 01:42:13,680 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 01:42:13,686 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 01:42:13,688 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 01:42:13,693 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 01:42:13,694 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 01:42:13,702 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 01:42:13,704 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 01:42:13,724 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 01:42:13,756 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 01:42:13,756 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 01:42:13,757 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 01:42:13,758 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 01:42:13,758 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 01:42:13,758 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 01:42:13,758 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 01:42:13,759 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 01:42:13,759 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 01:42:13,759 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 01:42:13,759 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 01:42:13,759 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 01:42:13,763 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 01:42:13,763 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 01:42:13,763 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 01:42:13,763 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 01:42:13,764 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 01:42:13,764 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 01:42:13,764 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 01:42:13,764 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 01:42:13,765 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 01:42:13,765 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 01:42:13,765 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 01:42:13,765 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 01:42:13,765 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 01:42:13,766 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 01:42:13,767 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 01:42:13,768 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 01:42:13,768 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 01:42:13,768 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 01:42:13,768 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 01:42:13,768 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 01:42:13,769 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 01:42:13,769 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 01:42:13,838 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 01:42:13,853 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 01:42:13,858 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 01:42:13,860 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 01:42:13,860 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 01:42:13,861 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label16_true-unreach-call.c [2018-10-24 01:42:13,925 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/58d8d9cb4/80bdf226fb064d968189a21aefe262f2/FLAGad3d104f0 [2018-10-24 01:42:14,595 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 01:42:14,596 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label16_true-unreach-call.c [2018-10-24 01:42:14,622 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/58d8d9cb4/80bdf226fb064d968189a21aefe262f2/FLAGad3d104f0 [2018-10-24 01:42:14,641 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/58d8d9cb4/80bdf226fb064d968189a21aefe262f2 [2018-10-24 01:42:14,653 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 01:42:14,654 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 01:42:14,656 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 01:42:14,656 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 01:42:14,662 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 01:42:14,663 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:42:14" (1/1) ... [2018-10-24 01:42:14,666 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62c5ece5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:42:14, skipping insertion in model container [2018-10-24 01:42:14,666 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 01:42:14" (1/1) ... [2018-10-24 01:42:14,678 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 01:42:14,789 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 01:42:15,643 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 01:42:15,648 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 01:42:15,902 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 01:42:15,922 INFO L193 MainTranslator]: Completed translation [2018-10-24 01:42:15,922 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:42:15 WrapperNode [2018-10-24 01:42:15,922 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 01:42:15,923 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 01:42:15,924 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 01:42:15,924 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 01:42:15,933 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:42:15" (1/1) ... [2018-10-24 01:42:15,971 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:42:15" (1/1) ... [2018-10-24 01:42:16,305 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 01:42:16,305 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 01:42:16,306 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 01:42:16,306 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 01:42:16,318 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:42:15" (1/1) ... [2018-10-24 01:42:16,318 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:42:15" (1/1) ... [2018-10-24 01:42:16,336 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:42:15" (1/1) ... [2018-10-24 01:42:16,336 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:42:15" (1/1) ... [2018-10-24 01:42:16,400 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:42:15" (1/1) ... [2018-10-24 01:42:16,417 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:42:15" (1/1) ... [2018-10-24 01:42:16,443 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:42:15" (1/1) ... [2018-10-24 01:42:16,465 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 01:42:16,466 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 01:42:16,466 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 01:42:16,466 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 01:42:16,467 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:42:15" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 01:42:16,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 01:42:16,542 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 01:42:16,542 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 01:42:16,542 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 01:42:16,542 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 01:42:16,542 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 01:42:16,543 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 01:42:16,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 01:42:16,543 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 01:42:16,543 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 01:42:25,717 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 01:42:25,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:42:25 BoogieIcfgContainer [2018-10-24 01:42:25,718 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 01:42:25,719 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 01:42:25,719 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 01:42:25,722 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 01:42:25,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 01:42:14" (1/3) ... [2018-10-24 01:42:25,724 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2462292d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:42:25, skipping insertion in model container [2018-10-24 01:42:25,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 01:42:15" (2/3) ... [2018-10-24 01:42:25,724 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2462292d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 01:42:25, skipping insertion in model container [2018-10-24 01:42:25,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 01:42:25" (3/3) ... [2018-10-24 01:42:25,726 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label16_true-unreach-call.c [2018-10-24 01:42:25,736 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 01:42:25,745 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 01:42:25,763 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 01:42:25,804 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 01:42:25,804 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 01:42:25,804 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 01:42:25,804 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 01:42:25,805 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 01:42:25,805 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 01:42:25,805 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 01:42:25,805 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 01:42:25,837 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-10-24 01:42:25,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-10-24 01:42:25,848 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:42:25,849 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 01:42:25,851 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:42:25,856 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:42:25,857 INFO L82 PathProgramCache]: Analyzing trace with hash 539142097, now seen corresponding path program 1 times [2018-10-24 01:42:25,859 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:42:25,911 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:42:25,911 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:42:25,911 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:42:25,911 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:42:26,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:42:26,412 WARN L179 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 01:42:26,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:42:26,559 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:42:26,560 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 01:42:26,560 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:42:26,566 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 01:42:26,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 01:42:26,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 01:42:26,585 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 3 states. [2018-10-24 01:42:33,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:42:33,970 INFO L93 Difference]: Finished difference Result 1193 states and 2149 transitions. [2018-10-24 01:42:33,970 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 01:42:33,971 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 69 [2018-10-24 01:42:33,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:42:33,996 INFO L225 Difference]: With dead ends: 1193 [2018-10-24 01:42:33,996 INFO L226 Difference]: Without dead ends: 753 [2018-10-24 01:42:34,008 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 01:42:34,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2018-10-24 01:42:34,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 753. [2018-10-24 01:42:34,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 753 states. [2018-10-24 01:42:34,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 1315 transitions. [2018-10-24 01:42:34,140 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 1315 transitions. Word has length 69 [2018-10-24 01:42:34,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:42:34,141 INFO L481 AbstractCegarLoop]: Abstraction has 753 states and 1315 transitions. [2018-10-24 01:42:34,142 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 01:42:34,142 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 1315 transitions. [2018-10-24 01:42:34,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2018-10-24 01:42:34,162 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:42:34,163 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 01:42:34,163 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:42:34,163 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:42:34,163 INFO L82 PathProgramCache]: Analyzing trace with hash -1189160704, now seen corresponding path program 1 times [2018-10-24 01:42:34,164 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:42:34,165 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:42:34,165 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:42:34,165 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:42:34,165 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:42:34,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:42:34,485 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:42:34,486 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:42:34,486 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 01:42:34,486 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:42:34,488 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 01:42:34,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 01:42:34,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 01:42:34,489 INFO L87 Difference]: Start difference. First operand 753 states and 1315 transitions. Second operand 5 states. [2018-10-24 01:42:53,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:42:53,245 INFO L93 Difference]: Finished difference Result 2822 states and 5078 transitions. [2018-10-24 01:42:53,246 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 01:42:53,246 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 149 [2018-10-24 01:42:53,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:42:53,262 INFO L225 Difference]: With dead ends: 2822 [2018-10-24 01:42:53,262 INFO L226 Difference]: Without dead ends: 2075 [2018-10-24 01:42:53,271 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 01:42:53,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2075 states. [2018-10-24 01:42:53,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2075 to 2048. [2018-10-24 01:42:53,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2048 states. [2018-10-24 01:42:53,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2048 states to 2048 states and 3214 transitions. [2018-10-24 01:42:53,382 INFO L78 Accepts]: Start accepts. Automaton has 2048 states and 3214 transitions. Word has length 149 [2018-10-24 01:42:53,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:42:53,382 INFO L481 AbstractCegarLoop]: Abstraction has 2048 states and 3214 transitions. [2018-10-24 01:42:53,383 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 01:42:53,384 INFO L276 IsEmpty]: Start isEmpty. Operand 2048 states and 3214 transitions. [2018-10-24 01:42:53,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-10-24 01:42:53,392 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:42:53,393 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 01:42:53,393 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:42:53,393 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:42:53,394 INFO L82 PathProgramCache]: Analyzing trace with hash -719504888, now seen corresponding path program 1 times [2018-10-24 01:42:53,394 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:42:53,395 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:42:53,396 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:42:53,396 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:42:53,396 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:42:53,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:42:53,701 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 01:42:53,702 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 01:42:53,702 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 01:42:53,702 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:42:53,703 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 01:42:53,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 01:42:53,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-24 01:42:53,704 INFO L87 Difference]: Start difference. First operand 2048 states and 3214 transitions. Second operand 6 states. [2018-10-24 01:43:05,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:43:05,253 INFO L93 Difference]: Finished difference Result 6276 states and 10295 transitions. [2018-10-24 01:43:05,254 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 01:43:05,254 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 153 [2018-10-24 01:43:05,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:43:05,280 INFO L225 Difference]: With dead ends: 6276 [2018-10-24 01:43:05,280 INFO L226 Difference]: Without dead ends: 4234 [2018-10-24 01:43:05,297 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-10-24 01:43:05,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4234 states. [2018-10-24 01:43:05,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4234 to 4178. [2018-10-24 01:43:05,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4178 states. [2018-10-24 01:43:05,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4178 states to 4178 states and 6128 transitions. [2018-10-24 01:43:05,409 INFO L78 Accepts]: Start accepts. Automaton has 4178 states and 6128 transitions. Word has length 153 [2018-10-24 01:43:05,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:43:05,409 INFO L481 AbstractCegarLoop]: Abstraction has 4178 states and 6128 transitions. [2018-10-24 01:43:05,409 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 01:43:05,410 INFO L276 IsEmpty]: Start isEmpty. Operand 4178 states and 6128 transitions. [2018-10-24 01:43:05,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2018-10-24 01:43:05,416 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:43:05,417 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 01:43:05,417 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:43:05,417 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:43:05,418 INFO L82 PathProgramCache]: Analyzing trace with hash 1625872252, now seen corresponding path program 1 times [2018-10-24 01:43:05,418 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:43:05,419 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:43:05,419 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:43:05,419 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:43:05,419 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:43:05,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:43:05,769 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 125 proven. 63 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-24 01:43:05,769 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 01:43:05,769 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 01:43:05,770 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 224 with the following transitions: [2018-10-24 01:43:05,772 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [521], [525], [527], [530], [538], [546], [554], [562], [566], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [629], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-24 01:43:05,846 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 01:43:05,847 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 01:43:07,495 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 01:43:07,756 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 01:43:07,758 INFO L272 AbstractInterpreter]: Visited 89 different actions 89 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-24 01:43:07,801 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:43:07,801 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 01:43:09,746 INFO L232 lantSequenceWeakener]: Weakened 215 states. On average, predicates are now at 78.44% of their original sizes. [2018-10-24 01:43:09,747 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 01:43:10,170 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 01:43:10,171 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 01:43:10,171 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-10-24 01:43:10,171 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:43:10,172 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 01:43:10,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 01:43:10,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 01:43:10,173 INFO L87 Difference]: Start difference. First operand 4178 states and 6128 transitions. Second operand 7 states. [2018-10-24 01:44:29,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 01:44:29,415 INFO L93 Difference]: Finished difference Result 8660 states and 12605 transitions. [2018-10-24 01:44:29,415 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 01:44:29,415 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 223 [2018-10-24 01:44:29,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 01:44:29,435 INFO L225 Difference]: With dead ends: 8660 [2018-10-24 01:44:29,435 INFO L226 Difference]: Without dead ends: 4488 [2018-10-24 01:44:29,446 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 223 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-24 01:44:29,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4488 states. [2018-10-24 01:44:29,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4488 to 4486. [2018-10-24 01:44:29,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4486 states. [2018-10-24 01:44:29,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4486 states to 4486 states and 6445 transitions. [2018-10-24 01:44:29,548 INFO L78 Accepts]: Start accepts. Automaton has 4486 states and 6445 transitions. Word has length 223 [2018-10-24 01:44:29,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 01:44:29,548 INFO L481 AbstractCegarLoop]: Abstraction has 4486 states and 6445 transitions. [2018-10-24 01:44:29,549 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 01:44:29,549 INFO L276 IsEmpty]: Start isEmpty. Operand 4486 states and 6445 transitions. [2018-10-24 01:44:29,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2018-10-24 01:44:29,555 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 01:44:29,556 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 01:44:29,556 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 01:44:29,556 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:44:29,557 INFO L82 PathProgramCache]: Analyzing trace with hash -378898114, now seen corresponding path program 1 times [2018-10-24 01:44:29,557 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 01:44:29,558 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:44:29,558 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 01:44:29,558 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 01:44:29,558 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 01:44:29,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 01:44:29,847 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 125 proven. 77 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-24 01:44:29,847 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 01:44:29,847 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 01:44:29,848 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 250 with the following transitions: [2018-10-24 01:44:29,848 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [521], [525], [527], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [629], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-24 01:44:29,857 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 01:44:29,857 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 01:44:31,001 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 01:44:38,140 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 01:44:38,141 INFO L272 AbstractInterpreter]: Visited 104 different actions 299 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 01:44:38,151 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 01:44:38,151 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 01:44:40,728 INFO L232 lantSequenceWeakener]: Weakened 24 states. On average, predicates are now at 78.6% of their original sizes. [2018-10-24 01:44:40,728 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 01:46:05,595 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 01:46:05,595 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 01:46:05,595 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [6] total 21 [2018-10-24 01:46:05,596 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 01:46:05,596 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-24 01:46:05,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-24 01:46:05,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2018-10-24 01:46:05,597 INFO L87 Difference]: Start difference. First operand 4486 states and 6445 transitions. Second operand 17 states. Received shutdown request... [2018-10-24 01:46:14,121 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-24 01:46:14,122 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 01:46:14,128 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 01:46:14,129 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 01:46:14 BoogieIcfgContainer [2018-10-24 01:46:14,129 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 01:46:14,130 INFO L168 Benchmark]: Toolchain (without parser) took 239476.22 ms. Allocated memory was 1.5 GB in the beginning and 3.8 GB in the end (delta: 2.3 GB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -777.8 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-10-24 01:46:14,131 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 01:46:14,131 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1267.20 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 105.9 MB). Peak memory consumption was 105.9 MB. Max. memory is 7.1 GB. [2018-10-24 01:46:14,132 INFO L168 Benchmark]: Boogie Procedure Inliner took 381.79 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 742.4 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -859.3 MB). Peak memory consumption was 33.5 MB. Max. memory is 7.1 GB. [2018-10-24 01:46:14,133 INFO L168 Benchmark]: Boogie Preprocessor took 160.18 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2018-10-24 01:46:14,134 INFO L168 Benchmark]: RCFGBuilder took 9251.81 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 318.7 MB). Peak memory consumption was 318.7 MB. Max. memory is 7.1 GB. [2018-10-24 01:46:14,135 INFO L168 Benchmark]: TraceAbstraction took 228410.12 ms. Allocated memory was 2.3 GB in the beginning and 3.8 GB in the end (delta: 1.6 GB). Free memory was 1.8 GB in the beginning and 2.2 GB in the end (delta: -357.0 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-10-24 01:46:14,140 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1267.20 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 105.9 MB). Peak memory consumption was 105.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 381.79 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 742.4 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -859.3 MB). Peak memory consumption was 33.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 160.18 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9251.81 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 318.7 MB). Peak memory consumption was 318.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 228410.12 ms. Allocated memory was 2.3 GB in the beginning and 3.8 GB in the end (delta: 1.6 GB). Free memory was 1.8 GB in the beginning and 2.2 GB in the end (delta: -357.0 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 193]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 193). Cancelled while BasicCegarLoop was constructing difference of abstraction (4486states) and FLOYD_HOARE automaton (currently 9 states, 17 states before enhancement),while ReachableStatesComputation was computing reachable states (25 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 228.3s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 125.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1000 SDtfs, 4823 SDslu, 927 SDs, 0 SdLazy, 8329 SolverSat, 1745 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 83.5s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 501 GetRequests, 372 SyntacticMatches, 89 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 481 ImplicationChecksByTransitivity, 86.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4486occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 10.3s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9953438174529755 AbsIntWeakeningRatio, 0.11063829787234042 AbsIntAvgWeakeningVarsNumRemoved, 527.3021276595745 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 4 MinimizatonAttempts, 85 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 843 NumberOfCodeBlocks, 843 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 838 ConstructedInterpolants, 0 QuantifiedInterpolants, 682048 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 386/526 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown