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_label18_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 03:31:32,533 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 03:31:32,539 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 03:31:32,553 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 03:31:32,553 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 03:31:32,554 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 03:31:32,556 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 03:31:32,558 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 03:31:32,560 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 03:31:32,561 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 03:31:32,565 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 03:31:32,566 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 03:31:32,567 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 03:31:32,568 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 03:31:32,572 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 03:31:32,573 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 03:31:32,574 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 03:31:32,577 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 03:31:32,582 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 03:31:32,583 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 03:31:32,584 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 03:31:32,585 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 03:31:32,587 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-27 03:31:32,593 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 03:31:32,593 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 03:31:32,594 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 03:31:32,595 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 03:31:32,595 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 03:31:32,610 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 03:31:32,610 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 03:31:32,611 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 03:31:32,611 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 03:31:32,611 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 03:31:32,611 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 03:31:32,612 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 03:31:32,612 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 03:31:32,612 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 03:31:32,612 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 03:31:32,612 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 03:31:32,613 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 03:31:32,613 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 03:31:32,613 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 03:31:32,614 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 03:31:32,614 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 03:31:32,614 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 03:31:32,614 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 03:31:32,614 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 03:31:32,615 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 03:31:32,615 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 03:31:32,615 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 03:31:32,615 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 03:31:32,615 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 03:31:32,616 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 03:31:32,616 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 03:31:32,616 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 03:31:32,616 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 03:31:32,616 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 03:31:32,617 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 03:31:32,617 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 03:31:32,617 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 03:31:32,617 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 03:31:32,617 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 03:31:32,665 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 03:31:32,679 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 03:31:32,684 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 03:31:32,685 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 03:31:32,686 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 03:31:32,686 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label18_true-unreach-call.c [2018-10-27 03:31:32,744 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/232a99303/d2f44263fd244b9ea0aa4db17301527e/FLAGb9a804342 [2018-10-27 03:31:33,466 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 03:31:33,467 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label18_true-unreach-call.c [2018-10-27 03:31:33,490 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/232a99303/d2f44263fd244b9ea0aa4db17301527e/FLAGb9a804342 [2018-10-27 03:31:33,507 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/232a99303/d2f44263fd244b9ea0aa4db17301527e [2018-10-27 03:31:33,519 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 03:31:33,521 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 03:31:33,522 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 03:31:33,523 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 03:31:33,527 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 03:31:33,528 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:31:33" (1/1) ... [2018-10-27 03:31:33,531 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ba4e0b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:31:33, skipping insertion in model container [2018-10-27 03:31:33,532 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:31:33" (1/1) ... [2018-10-27 03:31:33,543 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 03:31:33,669 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 03:31:34,684 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 03:31:34,689 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 03:31:35,122 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 03:31:35,148 INFO L193 MainTranslator]: Completed translation [2018-10-27 03:31:35,148 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:31:35 WrapperNode [2018-10-27 03:31:35,149 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 03:31:35,150 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 03:31:35,150 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 03:31:35,150 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 03:31:35,161 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:31:35" (1/1) ... [2018-10-27 03:31:35,230 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:31:35" (1/1) ... [2018-10-27 03:31:35,630 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 03:31:35,630 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 03:31:35,630 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 03:31:35,631 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 03:31:35,642 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:31:35" (1/1) ... [2018-10-27 03:31:35,642 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:31:35" (1/1) ... [2018-10-27 03:31:35,671 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:31:35" (1/1) ... [2018-10-27 03:31:35,672 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:31:35" (1/1) ... [2018-10-27 03:31:35,794 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:31:35" (1/1) ... [2018-10-27 03:31:35,836 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:31:35" (1/1) ... [2018-10-27 03:31:35,898 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:31:35" (1/1) ... [2018-10-27 03:31:35,957 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 03:31:35,958 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 03:31:35,958 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 03:31:35,958 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 03:31:35,959 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:31:35" (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 [2018-10-27 03:31:36,036 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 03:31:36,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 03:31:36,037 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 03:31:36,037 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 03:31:36,037 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 03:31:36,038 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 03:31:36,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 03:31:36,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 03:31:36,038 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 03:31:36,038 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 03:31:48,250 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 03:31:48,251 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:31:48 BoogieIcfgContainer [2018-10-27 03:31:48,251 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 03:31:48,252 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 03:31:48,253 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 03:31:48,256 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 03:31:48,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 03:31:33" (1/3) ... [2018-10-27 03:31:48,257 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ba90990 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:31:48, skipping insertion in model container [2018-10-27 03:31:48,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:31:35" (2/3) ... [2018-10-27 03:31:48,258 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ba90990 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:31:48, skipping insertion in model container [2018-10-27 03:31:48,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:31:48" (3/3) ... [2018-10-27 03:31:48,260 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label18_true-unreach-call.c [2018-10-27 03:31:48,269 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 03:31:48,277 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 03:31:48,296 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 03:31:48,340 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 03:31:48,340 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 03:31:48,340 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 03:31:48,340 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 03:31:48,340 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 03:31:48,341 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 03:31:48,341 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 03:31:48,341 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 03:31:48,377 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-10-27 03:31:48,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-10-27 03:31:48,388 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:31:48,389 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] [2018-10-27 03:31:48,391 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:31:48,398 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:31:48,398 INFO L82 PathProgramCache]: Analyzing trace with hash -2094085436, now seen corresponding path program 1 times [2018-10-27 03:31:48,401 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:31:48,459 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:31:48,459 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:31:48,459 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:31:48,460 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:31:48,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:31:48,954 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-10-27 03:31:48,973 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 03:31:48,975 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 03:31:48,976 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 03:31:48,976 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:31:48,982 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 03:31:48,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 03:31:48,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 03:31:49,001 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-10-27 03:32:03,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:32:03,854 INFO L93 Difference]: Finished difference Result 2142 states and 3971 transitions. [2018-10-27 03:32:03,855 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 03:32:03,856 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2018-10-27 03:32:03,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:32:03,894 INFO L225 Difference]: With dead ends: 2142 [2018-10-27 03:32:03,895 INFO L226 Difference]: Without dead ends: 1532 [2018-10-27 03:32:03,907 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 03:32:03,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1532 states. [2018-10-27 03:32:04,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1532 to 1519. [2018-10-27 03:32:04,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1519 states. [2018-10-27 03:32:04,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1519 states to 1519 states and 2456 transitions. [2018-10-27 03:32:04,074 INFO L78 Accepts]: Start accepts. Automaton has 1519 states and 2456 transitions. Word has length 62 [2018-10-27 03:32:04,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:32:04,074 INFO L481 AbstractCegarLoop]: Abstraction has 1519 states and 2456 transitions. [2018-10-27 03:32:04,075 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 03:32:04,075 INFO L276 IsEmpty]: Start isEmpty. Operand 1519 states and 2456 transitions. [2018-10-27 03:32:04,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-10-27 03:32:04,090 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:32:04,090 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 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 03:32:04,091 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:32:04,091 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:32:04,091 INFO L82 PathProgramCache]: Analyzing trace with hash -858039278, now seen corresponding path program 1 times [2018-10-27 03:32:04,091 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:32:04,094 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:32:04,094 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:32:04,094 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:32:04,095 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:32:04,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:32:04,455 WARN L179 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 03:32:04,496 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:32:04,496 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 03:32:04,497 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-27 03:32:04,497 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:32:04,499 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-27 03:32:04,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-27 03:32:04,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-27 03:32:04,500 INFO L87 Difference]: Start difference. First operand 1519 states and 2456 transitions. Second operand 5 states. [2018-10-27 03:32:14,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 03:32:14,633 INFO L93 Difference]: Finished difference Result 4424 states and 7338 transitions. [2018-10-27 03:32:14,638 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 03:32:14,638 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 134 [2018-10-27 03:32:14,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 03:32:14,668 INFO L225 Difference]: With dead ends: 4424 [2018-10-27 03:32:14,668 INFO L226 Difference]: Without dead ends: 2911 [2018-10-27 03:32:14,676 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-27 03:32:14,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2911 states. [2018-10-27 03:32:14,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2911 to 2875. [2018-10-27 03:32:14,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2875 states. [2018-10-27 03:32:14,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2875 states to 2875 states and 4373 transitions. [2018-10-27 03:32:14,770 INFO L78 Accepts]: Start accepts. Automaton has 2875 states and 4373 transitions. Word has length 134 [2018-10-27 03:32:14,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 03:32:14,771 INFO L481 AbstractCegarLoop]: Abstraction has 2875 states and 4373 transitions. [2018-10-27 03:32:14,771 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-27 03:32:14,771 INFO L276 IsEmpty]: Start isEmpty. Operand 2875 states and 4373 transitions. [2018-10-27 03:32:14,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-10-27 03:32:14,776 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 03:32:14,776 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 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 03:32:14,776 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 03:32:14,777 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:32:14,777 INFO L82 PathProgramCache]: Analyzing trace with hash -1330082406, now seen corresponding path program 1 times [2018-10-27 03:32:14,777 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 03:32:14,778 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:32:14,778 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 03:32:14,779 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 03:32:14,779 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 03:32:14,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 03:32:15,101 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 03:32:15,101 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 03:32:15,101 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 03:32:15,103 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 138 with the following transitions: [2018-10-27 03:32:15,105 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1030], [1038], [1046], [1054], [1062], [1070], [1078], [1086], [1094], [1102], [1106], [1108], [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 03:32:15,177 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 03:32:15,177 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 03:32:16,555 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 03:32:34,530 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 03:32:34,532 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 03:32:34,548 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 03:32:34,548 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 03:32:37,201 INFO L227 lantSequenceWeakener]: Weakened 2 states. On average, predicates are now at 89.58% of their original sizes. [2018-10-27 03:32:37,201 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 03:33:22,435 INFO L415 sIntCurrentIteration]: We unified 136 AI predicates to 136 [2018-10-27 03:33:22,435 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 03:33:22,436 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 03:33:22,437 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [20] imperfect sequences [7] total 25 [2018-10-27 03:33:22,437 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 03:33:22,437 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-27 03:33:22,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-27 03:33:22,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=307, Unknown=0, NotChecked=0, Total=380 [2018-10-27 03:33:22,438 INFO L87 Difference]: Start difference. First operand 2875 states and 4373 transitions. Second operand 20 states. Received shutdown request... [2018-10-27 03:35:43,654 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-27 03:35:43,654 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 03:35:43,659 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 03:35:43,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 03:35:43 BoogieIcfgContainer [2018-10-27 03:35:43,660 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 03:35:43,661 INFO L168 Benchmark]: Toolchain (without parser) took 250140.96 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 3.1 GB in the end (delta: -1.7 GB). Peak memory consumption was 982.9 MB. Max. memory is 7.1 GB. [2018-10-27 03:35:43,662 INFO L168 Benchmark]: CDTParser took 0.19 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 03:35:43,663 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1626.72 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: 140.1 MB). Peak memory consumption was 140.1 MB. Max. memory is 7.1 GB. [2018-10-27 03:35:43,664 INFO L168 Benchmark]: Boogie Procedure Inliner took 480.43 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 784.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -937.6 MB). Peak memory consumption was 56.2 MB. Max. memory is 7.1 GB. [2018-10-27 03:35:43,665 INFO L168 Benchmark]: Boogie Preprocessor took 327.51 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: 27.8 MB). Peak memory consumption was 27.8 MB. Max. memory is 7.1 GB. [2018-10-27 03:35:43,666 INFO L168 Benchmark]: RCFGBuilder took 12293.61 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: 484.8 MB). Peak memory consumption was 484.8 MB. Max. memory is 7.1 GB. [2018-10-27 03:35:43,667 INFO L168 Benchmark]: TraceAbstraction took 235407.61 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 3.1 GB in the end (delta: -1.4 GB). Peak memory consumption was 483.0 MB. Max. memory is 7.1 GB. [2018-10-27 03:35:43,672 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 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 1626.72 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: 140.1 MB). Peak memory consumption was 140.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 480.43 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 784.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -937.6 MB). Peak memory consumption was 56.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 327.51 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: 27.8 MB). Peak memory consumption was 27.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 12293.61 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: 484.8 MB). Peak memory consumption was 484.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 235407.61 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 3.1 GB in the end (delta: -1.4 GB). Peak memory consumption was 483.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 173]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 173). Cancelled while BasicCegarLoop was constructing difference of abstraction (2875states) and FLOYD_HOARE automaton (currently 20 states, 20 states before enhancement),while ReachableStatesComputation was computing reachable states (582 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 235.3s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 166.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 776 SDtfs, 4111 SDslu, 569 SDs, 0 SdLazy, 6286 SolverSat, 1611 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 73.2s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 166 GetRequests, 99 SyntacticMatches, 26 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 469 ImplicationChecksByTransitivity, 55.2s 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, 19.4s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9934502262443438 AbsIntWeakeningRatio, 0.15441176470588236 AbsIntAvgWeakeningVarsNumRemoved, 715.9852941176471 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 2 MinimizatonAttempts, 49 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 333 NumberOfCodeBlocks, 333 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 330 ConstructedInterpolants, 0 QuantifiedInterpolants, 134340 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 55/110 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown