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/Problem02_label20_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 19:25:33,718 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 19:25:33,720 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 19:25:33,732 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 19:25:33,732 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 19:25:33,733 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 19:25:33,734 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 19:25:33,736 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 19:25:33,738 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 19:25:33,739 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 19:25:33,740 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 19:25:33,740 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 19:25:33,741 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 19:25:33,742 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 19:25:33,743 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 19:25:33,744 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 19:25:33,745 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 19:25:33,747 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 19:25:33,749 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 19:25:33,751 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 19:25:33,752 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 19:25:33,753 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 19:25:33,756 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 19:25:33,765 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 19:25:33,784 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 19:25:33,785 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 19:25:33,785 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 19:25:33,786 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 19:25:33,786 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 19:25:33,786 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 19:25:33,786 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 19:25:33,787 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 19:25:33,787 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 19:25:33,787 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 19:25:33,787 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 19:25:33,787 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 19:25:33,788 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 19:25:33,789 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 19:25:33,789 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 19:25:33,789 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 19:25:33,789 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 19:25:33,789 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 19:25:33,790 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 19:25:33,790 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 19:25:33,790 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 19:25:33,790 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 19:25:33,790 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 19:25:33,790 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 19:25:33,791 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 19:25:33,792 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 19:25:33,792 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 19:25:33,792 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 19:25:33,792 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 19:25:33,792 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 19:25:33,793 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 19:25:33,793 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 19:25:33,793 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 19:25:33,793 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 19:25:33,850 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 19:25:33,868 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 19:25:33,872 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 19:25:33,873 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 19:25:33,873 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 19:25:33,874 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label20_true-unreach-call_false-termination.c [2018-10-24 19:25:33,929 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6d2c98600/a58748c22a1c4e2a9cf169a15cf9fbfd/FLAGa684de240 [2018-10-24 19:25:34,484 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 19:25:34,485 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem02_label20_true-unreach-call_false-termination.c [2018-10-24 19:25:34,505 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6d2c98600/a58748c22a1c4e2a9cf169a15cf9fbfd/FLAGa684de240 [2018-10-24 19:25:34,527 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/6d2c98600/a58748c22a1c4e2a9cf169a15cf9fbfd [2018-10-24 19:25:34,540 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 19:25:34,542 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 19:25:34,547 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 19:25:34,547 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 19:25:34,551 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 19:25:34,552 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:25:34" (1/1) ... [2018-10-24 19:25:34,556 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f51eb09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:25:34, skipping insertion in model container [2018-10-24 19:25:34,556 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 07:25:34" (1/1) ... [2018-10-24 19:25:34,568 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 19:25:34,645 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 19:25:35,072 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 19:25:35,078 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 19:25:35,211 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 19:25:35,228 INFO L193 MainTranslator]: Completed translation [2018-10-24 19:25:35,229 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:25:35 WrapperNode [2018-10-24 19:25:35,229 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 19:25:35,230 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 19:25:35,231 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 19:25:35,231 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 19:25:35,241 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:25:35" (1/1) ... [2018-10-24 19:25:35,260 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:25:35" (1/1) ... [2018-10-24 19:25:35,410 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 19:25:35,410 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 19:25:35,410 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 19:25:35,410 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 19:25:35,419 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:25:35" (1/1) ... [2018-10-24 19:25:35,419 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:25:35" (1/1) ... [2018-10-24 19:25:35,424 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:25:35" (1/1) ... [2018-10-24 19:25:35,424 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:25:35" (1/1) ... [2018-10-24 19:25:35,444 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:25:35" (1/1) ... [2018-10-24 19:25:35,458 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:25:35" (1/1) ... [2018-10-24 19:25:35,465 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:25:35" (1/1) ... [2018-10-24 19:25:35,473 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 19:25:35,474 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 19:25:35,474 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 19:25:35,474 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 19:25:35,475 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:25:35" (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 19:25:35,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 19:25:35,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 19:25:35,572 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 19:25:35,572 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 19:25:35,572 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 19:25:35,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 19:25:35,573 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 19:25:35,574 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 19:25:38,966 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 19:25:38,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:25:38 BoogieIcfgContainer [2018-10-24 19:25:38,967 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 19:25:38,968 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 19:25:38,968 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 19:25:38,972 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 19:25:38,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 07:25:34" (1/3) ... [2018-10-24 19:25:38,973 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33f39d02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:25:38, skipping insertion in model container [2018-10-24 19:25:38,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 07:25:35" (2/3) ... [2018-10-24 19:25:38,973 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33f39d02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 07:25:38, skipping insertion in model container [2018-10-24 19:25:38,974 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 07:25:38" (3/3) ... [2018-10-24 19:25:38,976 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem02_label20_true-unreach-call_false-termination.c [2018-10-24 19:25:38,986 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 19:25:38,995 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 19:25:39,013 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 19:25:39,052 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 19:25:39,053 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 19:25:39,053 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 19:25:39,053 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 19:25:39,053 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 19:25:39,054 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 19:25:39,054 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 19:25:39,054 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 19:25:39,082 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states. [2018-10-24 19:25:39,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2018-10-24 19:25:39,098 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:25:39,099 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:25:39,102 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:25:39,108 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:25:39,108 INFO L82 PathProgramCache]: Analyzing trace with hash 915772480, now seen corresponding path program 1 times [2018-10-24 19:25:39,111 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:25:39,162 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:25:39,162 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:25:39,162 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:25:39,163 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:25:39,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:25:39,683 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 19:25:39,685 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:25:39,686 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 19:25:39,686 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:25:39,693 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 19:25:39,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 19:25:39,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 19:25:39,712 INFO L87 Difference]: Start difference. First operand 237 states. Second operand 3 states. [2018-10-24 19:25:41,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:25:41,631 INFO L93 Difference]: Finished difference Result 618 states and 1056 transitions. [2018-10-24 19:25:41,632 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 19:25:41,633 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 106 [2018-10-24 19:25:41,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:25:41,652 INFO L225 Difference]: With dead ends: 618 [2018-10-24 19:25:41,652 INFO L226 Difference]: Without dead ends: 379 [2018-10-24 19:25:41,659 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 19:25:41,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2018-10-24 19:25:41,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 379. [2018-10-24 19:25:41,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 379 states. [2018-10-24 19:25:41,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 621 transitions. [2018-10-24 19:25:41,741 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 621 transitions. Word has length 106 [2018-10-24 19:25:41,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:25:41,742 INFO L481 AbstractCegarLoop]: Abstraction has 379 states and 621 transitions. [2018-10-24 19:25:41,742 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 19:25:41,742 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 621 transitions. [2018-10-24 19:25:41,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-10-24 19:25:41,750 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:25:41,750 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 19:25:41,750 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:25:41,751 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:25:41,751 INFO L82 PathProgramCache]: Analyzing trace with hash 1354213973, now seen corresponding path program 1 times [2018-10-24 19:25:41,751 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:25:41,752 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:25:41,752 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:25:41,753 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:25:41,753 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:25:41,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:25:41,983 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:25:41,984 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:25:41,984 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 19:25:41,984 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:25:41,986 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 19:25:41,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 19:25:41,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 19:25:41,987 INFO L87 Difference]: Start difference. First operand 379 states and 621 transitions. Second operand 6 states. [2018-10-24 19:25:44,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:25:44,036 INFO L93 Difference]: Finished difference Result 1229 states and 2094 transitions. [2018-10-24 19:25:44,041 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-24 19:25:44,041 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 122 [2018-10-24 19:25:44,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:25:44,050 INFO L225 Difference]: With dead ends: 1229 [2018-10-24 19:25:44,050 INFO L226 Difference]: Without dead ends: 856 [2018-10-24 19:25:44,056 INFO L605 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 [2018-10-24 19:25:44,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 856 states. [2018-10-24 19:25:44,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 856 to 823. [2018-10-24 19:25:44,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 823 states. [2018-10-24 19:25:44,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 823 states to 823 states and 1292 transitions. [2018-10-24 19:25:44,131 INFO L78 Accepts]: Start accepts. Automaton has 823 states and 1292 transitions. Word has length 122 [2018-10-24 19:25:44,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:25:44,131 INFO L481 AbstractCegarLoop]: Abstraction has 823 states and 1292 transitions. [2018-10-24 19:25:44,132 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 19:25:44,132 INFO L276 IsEmpty]: Start isEmpty. Operand 823 states and 1292 transitions. [2018-10-24 19:25:44,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-10-24 19:25:44,138 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:25:44,139 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 19:25:44,139 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:25:44,139 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:25:44,139 INFO L82 PathProgramCache]: Analyzing trace with hash -796384502, now seen corresponding path program 1 times [2018-10-24 19:25:44,140 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:25:44,141 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:25:44,141 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:25:44,141 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:25:44,141 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:25:44,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:25:44,431 WARN L179 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 19:25:44,486 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 19:25:44,486 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 19:25:44,486 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 19:25:44,487 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:25:44,487 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 19:25:44,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 19:25:44,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 19:25:44,488 INFO L87 Difference]: Start difference. First operand 823 states and 1292 transitions. Second operand 6 states. [2018-10-24 19:25:48,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:25:48,006 INFO L93 Difference]: Finished difference Result 2557 states and 4222 transitions. [2018-10-24 19:25:48,009 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 19:25:48,009 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 129 [2018-10-24 19:25:48,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:25:48,027 INFO L225 Difference]: With dead ends: 2557 [2018-10-24 19:25:48,028 INFO L226 Difference]: Without dead ends: 1740 [2018-10-24 19:25:48,037 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 19:25:48,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1740 states. [2018-10-24 19:25:48,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1740 to 1682. [2018-10-24 19:25:48,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1682 states. [2018-10-24 19:25:48,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1682 states to 1682 states and 2540 transitions. [2018-10-24 19:25:48,119 INFO L78 Accepts]: Start accepts. Automaton has 1682 states and 2540 transitions. Word has length 129 [2018-10-24 19:25:48,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:25:48,120 INFO L481 AbstractCegarLoop]: Abstraction has 1682 states and 2540 transitions. [2018-10-24 19:25:48,120 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 19:25:48,120 INFO L276 IsEmpty]: Start isEmpty. Operand 1682 states and 2540 transitions. [2018-10-24 19:25:48,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-10-24 19:25:48,128 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:25:48,128 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 19:25:48,128 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:25:48,129 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:25:48,130 INFO L82 PathProgramCache]: Analyzing trace with hash 80807714, now seen corresponding path program 1 times [2018-10-24 19:25:48,130 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:25:48,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:25:48,131 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:25:48,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:25:48,131 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:25:48,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:25:48,421 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 19:25:48,864 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-24 19:25:48,864 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 19:25:48,864 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 19:25:48,866 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 132 with the following transitions: [2018-10-24 19:25:48,868 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [6], [10], [14], [18], [22], [26], [30], [33], [34], [38], [42], [53], [64], [68], [72], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [152], [156], [160], [171], [175], [179], [183], [187], [191], [195], [199], [210], [214], [218], [222], [233], [237], [241], [245], [249], [253], [257], [268], [272], [283], [287], [298], [309], [313], [317], [321], [325], [329], [333], [344], [348], [352], [356], [360], [364], [368], [372], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [519], [521], [863], [867], [871], [877], [881], [883], [888], [889], [890], [892], [893] [2018-10-24 19:25:48,944 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 19:25:48,945 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 19:26:01,986 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 19:26:01,988 INFO L272 AbstractInterpreter]: Visited 107 different actions 107 times. Never merged. Never widened. Never found a fixpoint. Largest state had 38 variables. [2018-10-24 19:26:02,010 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:26:02,010 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 19:26:06,304 INFO L232 lantSequenceWeakener]: Weakened 110 states. On average, predicates are now at 81.2% of their original sizes. [2018-10-24 19:26:06,305 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 19:26:09,618 INFO L413 sIntCurrentIteration]: We have 130 unified AI predicates [2018-10-24 19:26:09,619 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 19:26:09,620 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 19:26:09,621 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [14] imperfect sequences [6] total 18 [2018-10-24 19:26:09,621 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 19:26:09,621 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2018-10-24 19:26:09,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2018-10-24 19:26:09,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2018-10-24 19:26:09,622 INFO L87 Difference]: Start difference. First operand 1682 states and 2540 transitions. Second operand 14 states. [2018-10-24 19:28:39,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 19:28:39,603 INFO L93 Difference]: Finished difference Result 3656 states and 5500 transitions. [2018-10-24 19:28:39,603 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-10-24 19:28:39,603 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 131 [2018-10-24 19:28:39,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 19:28:39,613 INFO L225 Difference]: With dead ends: 3656 [2018-10-24 19:28:39,614 INFO L226 Difference]: Without dead ends: 1980 [2018-10-24 19:28:39,620 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 143 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=193, Invalid=509, Unknown=0, NotChecked=0, Total=702 [2018-10-24 19:28:39,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1980 states. [2018-10-24 19:28:39,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1980 to 1827. [2018-10-24 19:28:39,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1827 states. [2018-10-24 19:28:39,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1827 states to 1827 states and 2692 transitions. [2018-10-24 19:28:39,751 INFO L78 Accepts]: Start accepts. Automaton has 1827 states and 2692 transitions. Word has length 131 [2018-10-24 19:28:39,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 19:28:39,752 INFO L481 AbstractCegarLoop]: Abstraction has 1827 states and 2692 transitions. [2018-10-24 19:28:39,752 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2018-10-24 19:28:39,752 INFO L276 IsEmpty]: Start isEmpty. Operand 1827 states and 2692 transitions. [2018-10-24 19:28:39,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-10-24 19:28:39,757 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 19:28:39,757 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 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] [2018-10-24 19:28:39,758 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 19:28:39,758 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:28:39,758 INFO L82 PathProgramCache]: Analyzing trace with hash -2031058527, now seen corresponding path program 1 times [2018-10-24 19:28:39,758 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 19:28:39,759 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:28:39,759 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 19:28:39,760 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 19:28:39,760 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 19:28:39,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 19:28:39,998 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 32 proven. 17 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 19:28:39,998 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 19:28:39,998 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 19:28:39,999 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 142 with the following transitions: [2018-10-24 19:28:39,999 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [6], [9], [10], [14], [18], [22], [26], [30], [33], [34], [38], [42], [53], [64], [68], [72], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [152], [156], [160], [171], [175], [179], [183], [187], [191], [195], [199], [210], [214], [218], [222], [233], [237], [241], [245], [249], [253], [257], [268], [272], [283], [287], [298], [309], [313], [317], [321], [325], [329], [333], [344], [348], [352], [356], [360], [364], [368], [372], [379], [387], [395], [403], [411], [419], [427], [435], [443], [451], [459], [467], [475], [483], [491], [499], [507], [515], [519], [521], [863], [867], [871], [877], [881], [883], [888], [889], [890], [892], [893] [2018-10-24 19:28:40,005 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 19:28:40,005 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 19:29:34,292 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 19:29:34,292 INFO L272 AbstractInterpreter]: Visited 111 different actions 432 times. Merged at 7 different actions 21 times. Never widened. Found 4 fixpoints after 2 different actions. Largest state had 38 variables. [2018-10-24 19:29:34,303 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 19:29:34,303 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 19:29:37,866 INFO L232 lantSequenceWeakener]: Weakened 21 states. On average, predicates are now at 83.73% of their original sizes. [2018-10-24 19:29:37,866 INFO L411 sIntCurrentIteration]: Unifying AI predicates Received shutdown request... [2018-10-24 19:29:49,822 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 19:29:49,827 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 19:29:49,828 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 07:29:49 BoogieIcfgContainer [2018-10-24 19:29:49,828 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 19:29:49,829 INFO L168 Benchmark]: Toolchain (without parser) took 255288.04 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 3.2 GB in the end (delta: -1.8 GB). Peak memory consumption was 800.3 MB. Max. memory is 7.1 GB. [2018-10-24 19:29:49,830 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 19:29:49,830 INFO L168 Benchmark]: CACSL2BoogieTranslator took 682.99 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-10-24 19:29:49,831 INFO L168 Benchmark]: Boogie Procedure Inliner took 179.54 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 738.2 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -813.8 MB). Peak memory consumption was 18.8 MB. Max. memory is 7.1 GB. [2018-10-24 19:29:49,832 INFO L168 Benchmark]: Boogie Preprocessor took 63.63 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 19:29:49,833 INFO L168 Benchmark]: RCFGBuilder took 3492.81 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 119.1 MB). Peak memory consumption was 119.1 MB. Max. memory is 7.1 GB. [2018-10-24 19:29:49,834 INFO L168 Benchmark]: TraceAbstraction took 250859.85 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 3.2 GB in the end (delta: -1.2 GB). Peak memory consumption was 725.1 MB. Max. memory is 7.1 GB. [2018-10-24 19:29:49,841 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 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 682.99 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 179.54 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 738.2 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -813.8 MB). Peak memory consumption was 18.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 63.63 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 3492.81 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 119.1 MB). Peak memory consumption was 119.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 250859.85 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 3.2 GB in the end (delta: -1.2 GB). Peak memory consumption was 725.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 469]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 469). Cancelled while BasicCegarLoop was analyzing trace of length 142 with TraceHistMax 4,while AbsIntCurrentIteration was generating AI predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 14 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 237 locations, 1 error locations. TIMEOUT Result, 250.7s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 157.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 649 SDtfs, 2997 SDslu, 912 SDs, 0 SdLazy, 3530 SolverSat, 679 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 94.2s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 168 GetRequests, 124 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 7.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1827occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 67.4s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9929429429429432 AbsIntWeakeningRatio, 0.26666666666666666 AbsIntAvgWeakeningVarsNumRemoved, 1256.2 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 4 MinimizatonAttempts, 244 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 488 NumberOfCodeBlocks, 488 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 484 ConstructedInterpolants, 0 QuantifiedInterpolants, 134412 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 59/61 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown