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/Problem17_label33_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 00:16:22,793 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 00:16:22,795 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 00:16:22,810 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 00:16:22,811 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 00:16:22,812 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 00:16:22,813 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 00:16:22,815 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 00:16:22,817 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 00:16:22,817 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 00:16:22,818 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 00:16:22,819 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 00:16:22,819 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 00:16:22,820 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 00:16:22,822 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 00:16:22,822 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 00:16:22,823 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 00:16:22,825 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 00:16:22,827 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 00:16:22,829 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 00:16:22,830 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 00:16:22,831 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 00:16:22,834 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-27 00:16:22,843 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 [2018-10-27 00:16:22,858 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 00:16:22,859 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 00:16:22,859 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 00:16:22,860 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 00:16:22,860 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 00:16:22,860 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 00:16:22,860 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 00:16:22,860 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 00:16:22,861 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 00:16:22,861 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 00:16:22,861 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 00:16:22,861 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 00:16:22,862 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 00:16:22,862 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 00:16:22,862 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 00:16:22,863 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 00:16:22,863 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 00:16:22,863 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 00:16:22,863 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 00:16:22,863 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 00:16:22,864 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 00:16:22,864 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 00:16:22,864 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 00:16:22,864 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 00:16:22,864 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 00:16:22,865 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 00:16:22,865 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 00:16:22,865 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 00:16:22,865 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 00:16:22,865 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 00:16:22,866 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 00:16:22,866 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 00:16:22,866 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 00:16:22,866 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 00:16:22,926 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 00:16:22,940 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 00:16:22,944 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 00:16:22,946 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 00:16:22,947 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 00:16:22,947 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label33_false-unreach-call.c [2018-10-27 00:16:23,008 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/4e80b6a4b/f76c8823d08345f9a082cb7a1a91500c/FLAGb096276e7 [2018-10-27 00:16:23,764 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 00:16:23,766 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label33_false-unreach-call.c [2018-10-27 00:16:23,796 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/4e80b6a4b/f76c8823d08345f9a082cb7a1a91500c/FLAGb096276e7 [2018-10-27 00:16:23,815 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/4e80b6a4b/f76c8823d08345f9a082cb7a1a91500c [2018-10-27 00:16:23,828 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 00:16:23,829 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 00:16:23,830 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 00:16:23,831 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 00:16:23,835 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 00:16:23,836 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:16:23" (1/1) ... [2018-10-27 00:16:23,839 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bc5d6a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:16:23, skipping insertion in model container [2018-10-27 00:16:23,839 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:16:23" (1/1) ... [2018-10-27 00:16:23,850 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 00:16:23,962 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 00:16:24,943 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 00:16:24,950 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 00:16:25,365 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 00:16:25,389 INFO L193 MainTranslator]: Completed translation [2018-10-27 00:16:25,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:16:25 WrapperNode [2018-10-27 00:16:25,390 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 00:16:25,392 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 00:16:25,392 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 00:16:25,392 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 00:16:25,404 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:16:25" (1/1) ... [2018-10-27 00:16:25,469 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:16:25" (1/1) ... [2018-10-27 00:16:25,969 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 00:16:25,970 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 00:16:25,970 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 00:16:25,970 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 00:16:25,981 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:16:25" (1/1) ... [2018-10-27 00:16:25,981 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:16:25" (1/1) ... [2018-10-27 00:16:26,013 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:16:25" (1/1) ... [2018-10-27 00:16:26,013 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:16:25" (1/1) ... [2018-10-27 00:16:26,130 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:16:25" (1/1) ... [2018-10-27 00:16:26,170 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:16:25" (1/1) ... [2018-10-27 00:16:26,210 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:16:25" (1/1) ... [2018-10-27 00:16:26,265 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 00:16:26,266 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 00:16:26,266 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 00:16:26,266 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 00:16:26,267 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:16:25" (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 [2018-10-27 00:16:26,342 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 00:16:26,342 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 00:16:26,342 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 00:16:26,342 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 00:16:26,342 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 00:16:26,343 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 00:16:26,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 00:16:26,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 00:16:26,343 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 00:16:26,343 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 00:16:39,130 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 00:16:39,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:16:39 BoogieIcfgContainer [2018-10-27 00:16:39,133 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 00:16:39,134 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 00:16:39,134 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 00:16:39,138 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 00:16:39,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 12:16:23" (1/3) ... [2018-10-27 00:16:39,139 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13d7e548 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:16:39, skipping insertion in model container [2018-10-27 00:16:39,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:16:25" (2/3) ... [2018-10-27 00:16:39,140 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13d7e548 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:16:39, skipping insertion in model container [2018-10-27 00:16:39,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:16:39" (3/3) ... [2018-10-27 00:16:39,142 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label33_false-unreach-call.c [2018-10-27 00:16:39,152 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 00:16:39,162 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 00:16:39,180 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 00:16:39,225 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 00:16:39,225 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 00:16:39,226 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 00:16:39,226 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 00:16:39,226 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 00:16:39,226 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 00:16:39,226 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 00:16:39,226 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 00:16:39,268 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-10-27 00:16:39,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-10-27 00:16:39,279 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:16:39,281 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] [2018-10-27 00:16:39,283 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:16:39,289 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:16:39,289 INFO L82 PathProgramCache]: Analyzing trace with hash 137132598, now seen corresponding path program 1 times [2018-10-27 00:16:39,292 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:16:39,343 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:16:39,343 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:16:39,343 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:16:39,343 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:16:39,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:16:39,775 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-10-27 00:16:39,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:16:39,785 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 00:16:39,785 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 00:16:39,786 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:16:39,792 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 00:16:39,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 00:16:39,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 00:16:39,813 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-10-27 00:16:51,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:16:51,070 INFO L93 Difference]: Finished difference Result 2142 states and 3971 transitions. [2018-10-27 00:16:51,070 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 00:16:51,071 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2018-10-27 00:16:51,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:16:51,106 INFO L225 Difference]: With dead ends: 2142 [2018-10-27 00:16:51,107 INFO L226 Difference]: Without dead ends: 1532 [2018-10-27 00:16:51,116 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 00:16:51,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1532 states. [2018-10-27 00:16:51,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1532 to 1519. [2018-10-27 00:16:51,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1519 states. [2018-10-27 00:16:51,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1519 states to 1519 states and 2456 transitions. [2018-10-27 00:16:51,286 INFO L78 Accepts]: Start accepts. Automaton has 1519 states and 2456 transitions. Word has length 23 [2018-10-27 00:16:51,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:16:51,287 INFO L481 AbstractCegarLoop]: Abstraction has 1519 states and 2456 transitions. [2018-10-27 00:16:51,287 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 00:16:51,287 INFO L276 IsEmpty]: Start isEmpty. Operand 1519 states and 2456 transitions. [2018-10-27 00:16:51,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2018-10-27 00:16:51,293 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:16:51,293 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-27 00:16:51,294 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:16:51,294 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:16:51,294 INFO L82 PathProgramCache]: Analyzing trace with hash -2044944537, now seen corresponding path program 1 times [2018-10-27 00:16:51,294 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:16:51,296 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:16:51,296 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:16:51,296 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:16:51,296 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:16:51,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:16:51,614 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 00:16:51,694 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:16:51,695 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 00:16:51,695 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 00:16:51,695 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:16:51,697 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 00:16:51,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 00:16:51,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 00:16:51,698 INFO L87 Difference]: Start difference. First operand 1519 states and 2456 transitions. Second operand 5 states. [2018-10-27 00:17:00,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:17:00,877 INFO L93 Difference]: Finished difference Result 4424 states and 7338 transitions. [2018-10-27 00:17:00,890 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 00:17:00,890 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 95 [2018-10-27 00:17:00,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:17:00,918 INFO L225 Difference]: With dead ends: 4424 [2018-10-27 00:17:00,918 INFO L226 Difference]: Without dead ends: 2911 [2018-10-27 00:17:00,925 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-27 00:17:00,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2911 states. [2018-10-27 00:17:01,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2911 to 2875. [2018-10-27 00:17:01,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2875 states. [2018-10-27 00:17:01,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2875 states to 2875 states and 4373 transitions. [2018-10-27 00:17:01,041 INFO L78 Accepts]: Start accepts. Automaton has 2875 states and 4373 transitions. Word has length 95 [2018-10-27 00:17:01,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:17:01,042 INFO L481 AbstractCegarLoop]: Abstraction has 2875 states and 4373 transitions. [2018-10-27 00:17:01,042 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 00:17:01,042 INFO L276 IsEmpty]: Start isEmpty. Operand 2875 states and 4373 transitions. [2018-10-27 00:17:01,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2018-10-27 00:17:01,045 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:17:01,046 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-27 00:17:01,046 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:17:01,046 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:17:01,046 INFO L82 PathProgramCache]: Analyzing trace with hash -552688383, now seen corresponding path program 1 times [2018-10-27 00:17:01,047 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:17:01,048 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:17:01,048 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:17:01,048 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:17:01,048 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:17:01,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:17:01,369 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:17:01,370 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 00:17:01,370 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 00:17:01,371 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 99 with the following transitions: [2018-10-27 00:17:01,373 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [794], [796], [799], [807], [815], [823], [831], [839], [847], [855], [863], [871], [879], [887], [895], [903], [911], [919], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-10-27 00:17:01,463 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 00:17:01,463 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 00:17:02,790 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 00:17:21,941 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 00:17:21,943 INFO L272 AbstractInterpreter]: Visited 82 different actions 538 times. Merged at 5 different actions 30 times. Widened at 1 different actions 2 times. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-27 00:17:21,962 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:17:21,962 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 00:17:23,657 INFO L227 lantSequenceWeakener]: Weakened 28 states. On average, predicates are now at 77.83% of their original sizes. [2018-10-27 00:17:23,657 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 00:18:01,387 INFO L415 sIntCurrentIteration]: We unified 97 AI predicates to 97 [2018-10-27 00:18:01,388 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 00:18:01,389 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 00:18:01,389 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [25] imperfect sequences [7] total 30 [2018-10-27 00:18:01,389 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:18:01,390 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-10-27 00:18:01,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-10-27 00:18:01,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=481, Unknown=0, NotChecked=0, Total=600 [2018-10-27 00:18:01,391 INFO L87 Difference]: Start difference. First operand 2875 states and 4373 transitions. Second operand 25 states. Received shutdown request... [2018-10-27 00:20:28,859 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-10-27 00:20:28,860 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 00:20:28,865 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 00:20:28,865 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 12:20:28 BoogieIcfgContainer [2018-10-27 00:20:28,865 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 00:20:28,868 INFO L168 Benchmark]: Toolchain (without parser) took 245037.90 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 3.6 GB in the end (delta: -2.2 GB). Peak memory consumption was 464.2 MB. Max. memory is 7.1 GB. [2018-10-27 00:20:28,871 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-27 00:20:28,872 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1560.56 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: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. [2018-10-27 00:20:28,875 INFO L168 Benchmark]: Boogie Procedure Inliner took 577.48 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 805.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -963.4 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. [2018-10-27 00:20:28,876 INFO L168 Benchmark]: Boogie Preprocessor took 296.10 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 28.9 MB). Peak memory consumption was 28.9 MB. Max. memory is 7.1 GB. [2018-10-27 00:20:28,881 INFO L168 Benchmark]: RCFGBuilder took 12867.20 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 464.4 MB). Peak memory consumption was 464.4 MB. Max. memory is 7.1 GB. [2018-10-27 00:20:28,885 INFO L168 Benchmark]: TraceAbstraction took 229731.30 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.7 GB in the beginning and 3.6 GB in the end (delta: -1.9 GB). There was no memory consumed. Max. memory is 7.1 GB. [2018-10-27 00:20:28,891 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1560.56 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: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 577.48 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 805.3 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -963.4 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 296.10 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 28.9 MB). Peak memory consumption was 28.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 12867.20 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 464.4 MB). Peak memory consumption was 464.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 229731.30 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.7 GB in the beginning and 3.6 GB in the end (delta: -1.9 GB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 56]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 56). Cancelled while BasicCegarLoop was constructing difference of abstraction (2875states) and FLOYD_HOARE automaton (currently 21 states, 25 states before enhancement),while ReachableStatesComputation was computing reachable states (578 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 229.6s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 168.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 774 SDtfs, 4361 SDslu, 628 SDs, 0 SdLazy, 6430 SolverSat, 1634 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 56.2s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 124 GetRequests, 62 SyntacticMatches, 19 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 473 ImplicationChecksByTransitivity, 48.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2875occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 20.5s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9908168120539256 AbsIntWeakeningRatio, 0.21649484536082475 AbsIntAvgWeakeningVarsNumRemoved, 795.9175257731958 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 2 MinimizatonAttempts, 49 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 216 NumberOfCodeBlocks, 216 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 213 ConstructedInterpolants, 0 QuantifiedInterpolants, 60561 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 16/32 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown