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/Problem03_label52_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 17:23:50,756 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 17:23:50,758 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 17:23:50,771 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 17:23:50,772 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 17:23:50,773 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 17:23:50,774 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 17:23:50,776 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 17:23:50,777 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 17:23:50,778 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 17:23:50,779 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 17:23:50,780 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 17:23:50,781 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 17:23:50,782 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 17:23:50,783 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 17:23:50,784 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 17:23:50,785 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 17:23:50,786 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 17:23:50,789 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 17:23:50,790 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 17:23:50,791 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 17:23:50,793 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 17:23:50,795 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 17:23:50,805 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 17:23:50,821 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 17:23:50,821 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 17:23:50,822 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 17:23:50,822 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 17:23:50,823 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 17:23:50,823 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 17:23:50,823 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 17:23:50,823 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 17:23:50,823 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 17:23:50,824 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 17:23:50,824 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 17:23:50,824 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 17:23:50,825 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 17:23:50,825 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 17:23:50,825 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 17:23:50,825 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 17:23:50,825 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 17:23:50,826 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 17:23:50,826 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 17:23:50,826 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 17:23:50,826 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 17:23:50,827 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 17:23:50,827 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 17:23:50,827 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 17:23:50,827 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 17:23:50,827 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 17:23:50,827 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 17:23:50,828 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 17:23:50,828 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 17:23:50,828 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 17:23:50,828 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 17:23:50,828 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 17:23:50,829 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 17:23:50,829 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 17:23:50,873 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 17:23:50,886 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 17:23:50,890 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 17:23:50,892 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 17:23:50,892 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 17:23:50,893 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label52_false-unreach-call.c [2018-10-24 17:23:50,956 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/29b0f5c6e/93d894c59ad449bcbaca0f348528ba2b/FLAG6aca94f64 [2018-10-24 17:23:51,659 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 17:23:51,660 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label52_false-unreach-call.c [2018-10-24 17:23:51,682 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/29b0f5c6e/93d894c59ad449bcbaca0f348528ba2b/FLAG6aca94f64 [2018-10-24 17:23:51,702 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/29b0f5c6e/93d894c59ad449bcbaca0f348528ba2b [2018-10-24 17:23:51,714 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 17:23:51,716 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 17:23:51,717 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 17:23:51,717 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 17:23:51,722 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 17:23:51,723 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 05:23:51" (1/1) ... [2018-10-24 17:23:51,726 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a25570f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:23:51, skipping insertion in model container [2018-10-24 17:23:51,726 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 05:23:51" (1/1) ... [2018-10-24 17:23:51,737 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 17:23:51,836 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 17:23:52,615 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 17:23:52,621 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 17:23:52,953 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 17:23:52,977 INFO L193 MainTranslator]: Completed translation [2018-10-24 17:23:52,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:23:52 WrapperNode [2018-10-24 17:23:52,978 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 17:23:52,980 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 17:23:52,981 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 17:23:52,981 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 17:23:52,991 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:23:52" (1/1) ... [2018-10-24 17:23:53,049 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:23:52" (1/1) ... [2018-10-24 17:23:53,309 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 17:23:53,310 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 17:23:53,310 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 17:23:53,310 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 17:23:53,321 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:23:52" (1/1) ... [2018-10-24 17:23:53,322 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:23:52" (1/1) ... [2018-10-24 17:23:53,329 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:23:52" (1/1) ... [2018-10-24 17:23:53,330 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:23:52" (1/1) ... [2018-10-24 17:23:53,403 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:23:52" (1/1) ... [2018-10-24 17:23:53,428 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:23:52" (1/1) ... [2018-10-24 17:23:53,448 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:23:52" (1/1) ... [2018-10-24 17:23:53,464 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 17:23:53,465 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 17:23:53,465 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 17:23:53,465 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 17:23:53,466 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:23:52" (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 17:23:53,539 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 17:23:53,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 17:23:53,540 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 17:23:53,540 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 17:23:53,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 17:23:53,541 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 17:23:53,541 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 17:23:53,541 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 17:23:58,730 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 17:23:58,731 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 05:23:58 BoogieIcfgContainer [2018-10-24 17:23:58,734 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 17:23:58,737 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 17:23:58,737 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 17:23:58,741 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 17:23:58,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 05:23:51" (1/3) ... [2018-10-24 17:23:58,742 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@303fb7d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 05:23:58, skipping insertion in model container [2018-10-24 17:23:58,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:23:52" (2/3) ... [2018-10-24 17:23:58,743 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@303fb7d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 05:23:58, skipping insertion in model container [2018-10-24 17:23:58,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 05:23:58" (3/3) ... [2018-10-24 17:23:58,745 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label52_false-unreach-call.c [2018-10-24 17:23:58,756 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 17:23:58,771 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 17:23:58,790 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 17:23:58,856 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 17:23:58,857 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 17:23:58,857 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 17:23:58,857 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 17:23:58,857 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 17:23:58,857 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 17:23:58,858 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 17:23:58,858 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 17:23:58,912 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-10-24 17:23:58,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-10-24 17:23:58,934 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:23:58,938 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:23:58,940 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:23:58,949 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:23:58,949 INFO L82 PathProgramCache]: Analyzing trace with hash 132642340, now seen corresponding path program 1 times [2018-10-24 17:23:58,952 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 17:23:59,013 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:23:59,014 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:23:59,014 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:23:59,014 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 17:23:59,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:23:59,938 WARN L179 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 17:24:00,126 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 17:24:00,130 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:24:00,130 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 17:24:00,131 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 17:24:00,139 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 17:24:00,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 17:24:00,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 17:24:00,165 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 3 states. [2018-10-24 17:24:02,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:24:02,187 INFO L93 Difference]: Finished difference Result 848 states and 1491 transitions. [2018-10-24 17:24:02,187 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 17:24:02,188 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 153 [2018-10-24 17:24:02,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:24:02,210 INFO L225 Difference]: With dead ends: 848 [2018-10-24 17:24:02,210 INFO L226 Difference]: Without dead ends: 534 [2018-10-24 17:24:02,219 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 17:24:02,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2018-10-24 17:24:02,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 532. [2018-10-24 17:24:02,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 532 states. [2018-10-24 17:24:02,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 867 transitions. [2018-10-24 17:24:02,309 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 867 transitions. Word has length 153 [2018-10-24 17:24:02,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:24:02,313 INFO L481 AbstractCegarLoop]: Abstraction has 532 states and 867 transitions. [2018-10-24 17:24:02,314 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 17:24:02,315 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 867 transitions. [2018-10-24 17:24:02,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2018-10-24 17:24:02,321 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:24:02,322 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:24:02,322 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:24:02,322 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:24:02,323 INFO L82 PathProgramCache]: Analyzing trace with hash 962373920, now seen corresponding path program 1 times [2018-10-24 17:24:02,323 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 17:24:02,324 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:24:02,325 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:24:02,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:24:02,325 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 17:24:02,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:24:02,695 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:24:02,696 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:24:02,696 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 17:24:02,696 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 17:24:02,700 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 17:24:02,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 17:24:02,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 17:24:02,701 INFO L87 Difference]: Start difference. First operand 532 states and 867 transitions. Second operand 3 states. [2018-10-24 17:24:04,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:24:04,845 INFO L93 Difference]: Finished difference Result 1494 states and 2513 transitions. [2018-10-24 17:24:04,846 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 17:24:04,846 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 166 [2018-10-24 17:24:04,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:24:04,857 INFO L225 Difference]: With dead ends: 1494 [2018-10-24 17:24:04,857 INFO L226 Difference]: Without dead ends: 968 [2018-10-24 17:24:04,865 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 17:24:04,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2018-10-24 17:24:04,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 952. [2018-10-24 17:24:04,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 952 states. [2018-10-24 17:24:04,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 952 states to 952 states and 1529 transitions. [2018-10-24 17:24:04,926 INFO L78 Accepts]: Start accepts. Automaton has 952 states and 1529 transitions. Word has length 166 [2018-10-24 17:24:04,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:24:04,927 INFO L481 AbstractCegarLoop]: Abstraction has 952 states and 1529 transitions. [2018-10-24 17:24:04,927 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 17:24:04,928 INFO L276 IsEmpty]: Start isEmpty. Operand 952 states and 1529 transitions. [2018-10-24 17:24:04,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2018-10-24 17:24:04,932 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:24:04,932 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:24:04,936 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:24:04,936 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:24:04,936 INFO L82 PathProgramCache]: Analyzing trace with hash 766647040, now seen corresponding path program 1 times [2018-10-24 17:24:04,936 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 17:24:04,937 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:24:04,938 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:24:04,938 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:24:04,938 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 17:24:04,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:24:05,202 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 27 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:24:05,203 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 17:24:05,203 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 17:24:05,204 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 178 with the following transitions: [2018-10-24 17:24:05,209 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [20], [21], [25], [28], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [685], [687], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-10-24 17:24:05,301 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 17:24:05,301 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... [2018-10-24 17:28:31,365 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-10-24 17:28:31,366 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-10-24 17:28:31,367 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-24 17:28:31,367 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 17:28:31,368 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 17:28:31,378 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:28:31,378 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 17:28:31,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:28:31,576 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 17:28:31,622 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-24 17:28:31,823 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 17:28:31,824 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 17:28:31,831 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 17:28:31,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 05:28:31 BoogieIcfgContainer [2018-10-24 17:28:31,832 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 17:28:31,833 INFO L168 Benchmark]: Toolchain (without parser) took 280118.01 ms. Allocated memory was 1.5 GB in the beginning and 2.6 GB in the end (delta: 1.1 GB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -457.8 MB). Peak memory consumption was 661.5 MB. Max. memory is 7.1 GB. [2018-10-24 17:28:31,834 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 17:28:31,835 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1262.48 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. [2018-10-24 17:28:31,836 INFO L168 Benchmark]: Boogie Procedure Inliner took 328.88 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 725.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -847.5 MB). Peak memory consumption was 40.3 MB. Max. memory is 7.1 GB. [2018-10-24 17:28:31,837 INFO L168 Benchmark]: Boogie Preprocessor took 154.67 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2018-10-24 17:28:31,838 INFO L168 Benchmark]: RCFGBuilder took 5270.93 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.9 GB in the end (delta: 251.3 MB). Peak memory consumption was 251.3 MB. Max. memory is 7.1 GB. [2018-10-24 17:28:31,844 INFO L168 Benchmark]: TraceAbstraction took 273095.46 ms. Allocated memory was 2.2 GB in the beginning and 2.6 GB in the end (delta: 393.7 MB). Free memory was 1.9 GB in the beginning and 1.8 GB in the end (delta: 50.2 MB). Peak memory consumption was 444.0 MB. Max. memory is 7.1 GB. [2018-10-24 17:28:31,853 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 1262.48 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 74.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 328.88 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 725.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -847.5 MB). Peak memory consumption was 40.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 154.67 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 5270.93 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 1.9 GB in the end (delta: 251.3 MB). Peak memory consumption was 251.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 273095.46 ms. Allocated memory was 2.2 GB in the beginning and 2.6 GB in the end (delta: 393.7 MB). Free memory was 1.9 GB in the beginning and 1.8 GB in the end (delta: 50.2 MB). Peak memory consumption was 444.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1473]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1473). Cancelled while BasicCegarLoop was analyzing trace of length 178 with TraceHistMax 3,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 6 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 312 locations, 1 error locations. TIMEOUT Result, 272.9s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 4.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 729 SDtfs, 315 SDslu, 145 SDs, 0 SdLazy, 1257 SolverSat, 410 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=952occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 266.1s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 2 MinimizatonAttempts, 18 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 319 NumberOfCodeBlocks, 319 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 317 ConstructedInterpolants, 0 QuantifiedInterpolants, 167899 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 10/10 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown