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/Problem12_label27_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 21:21:17,539 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 21:21:17,541 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 21:21:17,561 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 21:21:17,562 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 21:21:17,563 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 21:21:17,567 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 21:21:17,570 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 21:21:17,572 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 21:21:17,575 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 21:21:17,575 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 21:21:17,578 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 21:21:17,579 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 21:21:17,580 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 21:21:17,583 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 21:21:17,585 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 21:21:17,585 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 21:21:17,587 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 21:21:17,590 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 21:21:17,591 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 21:21:17,592 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 21:21:17,594 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 21:21:17,596 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 21:21:17,603 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 21:21:17,603 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 21:21:17,604 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 21:21:17,605 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 21:21:17,605 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 21:21:17,620 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 21:21:17,621 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 21:21:17,622 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 21:21:17,622 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 21:21:17,622 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 21:21:17,622 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 21:21:17,622 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 21:21:17,623 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 21:21:17,623 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 21:21:17,623 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 21:21:17,623 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 21:21:17,623 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 21:21:17,624 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 21:21:17,624 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 21:21:17,625 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 21:21:17,625 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 21:21:17,625 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 21:21:17,625 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 21:21:17,625 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 21:21:17,626 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 21:21:17,626 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 21:21:17,626 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 21:21:17,626 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 21:21:17,626 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 21:21:17,627 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 21:21:17,627 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 21:21:17,627 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 21:21:17,627 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 21:21:17,627 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 21:21:17,628 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 21:21:17,628 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 21:21:17,628 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 21:21:17,628 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 21:21:17,628 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 21:21:17,689 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 21:21:17,704 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 21:21:17,709 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 21:21:17,711 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 21:21:17,711 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 21:21:17,712 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label27_true-unreach-call.c [2018-10-24 21:21:17,773 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/8a7f713d1/0db6486518744547ad795d05f5c60ddc/FLAGacf850768 [2018-10-24 21:21:18,544 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 21:21:18,545 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label27_true-unreach-call.c [2018-10-24 21:21:18,575 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/8a7f713d1/0db6486518744547ad795d05f5c60ddc/FLAGacf850768 [2018-10-24 21:21:18,593 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/8a7f713d1/0db6486518744547ad795d05f5c60ddc [2018-10-24 21:21:18,606 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 21:21:18,608 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 21:21:18,609 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 21:21:18,609 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 21:21:18,613 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 21:21:18,615 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:21:18" (1/1) ... [2018-10-24 21:21:18,618 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1462e15c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:21:18, skipping insertion in model container [2018-10-24 21:21:18,618 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:21:18" (1/1) ... [2018-10-24 21:21:18,630 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 21:21:18,809 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 21:21:20,284 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:21:20,289 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 21:21:20,945 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:21:20,980 INFO L193 MainTranslator]: Completed translation [2018-10-24 21:21:20,981 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:21:20 WrapperNode [2018-10-24 21:21:20,981 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 21:21:20,983 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 21:21:20,983 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 21:21:20,983 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 21:21:20,996 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:21:20" (1/1) ... [2018-10-24 21:21:21,078 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:21:20" (1/1) ... [2018-10-24 21:21:21,494 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 21:21:21,495 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 21:21:21,495 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 21:21:21,495 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 21:21:21,506 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:21:20" (1/1) ... [2018-10-24 21:21:21,507 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:21:20" (1/1) ... [2018-10-24 21:21:21,547 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:21:20" (1/1) ... [2018-10-24 21:21:21,547 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:21:20" (1/1) ... [2018-10-24 21:21:21,671 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:21:20" (1/1) ... [2018-10-24 21:21:21,721 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:21:20" (1/1) ... [2018-10-24 21:21:21,785 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:21:20" (1/1) ... [2018-10-24 21:21:21,861 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 21:21:21,862 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 21:21:21,862 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 21:21:21,862 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 21:21:21,863 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:21:20" (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 21:21:21,938 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 21:21:21,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 21:21:21,939 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-24 21:21:21,939 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-24 21:21:21,939 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-24 21:21:21,941 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-24 21:21:21,941 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 21:21:21,941 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 21:21:21,941 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 21:21:21,942 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 21:21:21,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 21:21:21,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 21:21:21,942 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 21:21:21,945 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 21:21:34,014 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 21:21:34,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:21:34 BoogieIcfgContainer [2018-10-24 21:21:34,015 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 21:21:34,017 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 21:21:34,019 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 21:21:34,022 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 21:21:34,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:21:18" (1/3) ... [2018-10-24 21:21:34,024 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d20316c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:21:34, skipping insertion in model container [2018-10-24 21:21:34,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:21:20" (2/3) ... [2018-10-24 21:21:34,024 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d20316c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:21:34, skipping insertion in model container [2018-10-24 21:21:34,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:21:34" (3/3) ... [2018-10-24 21:21:34,028 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label27_true-unreach-call.c [2018-10-24 21:21:34,039 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 21:21:34,055 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 21:21:34,075 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 21:21:34,143 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 21:21:34,143 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 21:21:34,144 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 21:21:34,144 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 21:21:34,144 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 21:21:34,144 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 21:21:34,144 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 21:21:34,144 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 21:21:34,208 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-10-24 21:21:34,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-10-24 21:21:34,218 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:21:34,220 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] [2018-10-24 21:21:34,224 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:21:34,231 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:21:34,232 INFO L82 PathProgramCache]: Analyzing trace with hash 1410046180, now seen corresponding path program 1 times [2018-10-24 21:21:34,235 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:21:34,301 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:21:34,302 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:21:34,302 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:21:34,302 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:21:34,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:21:34,787 WARN L179 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 21:21:34,905 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 21:21:34,907 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:21:34,908 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 21:21:34,908 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:21:34,914 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 21:21:34,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 21:21:34,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 21:21:34,936 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-10-24 21:21:42,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:21:42,766 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-10-24 21:21:42,767 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 21:21:42,768 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2018-10-24 21:21:42,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:21:42,807 INFO L225 Difference]: With dead ends: 2446 [2018-10-24 21:21:42,807 INFO L226 Difference]: Without dead ends: 1604 [2018-10-24 21:21:42,825 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 21:21:42,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-10-24 21:21:42,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-10-24 21:21:42,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-10-24 21:21:42,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2969 transitions. [2018-10-24 21:21:42,993 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2969 transitions. Word has length 38 [2018-10-24 21:21:42,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:21:42,994 INFO L481 AbstractCegarLoop]: Abstraction has 1604 states and 2969 transitions. [2018-10-24 21:21:42,994 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 21:21:42,994 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2969 transitions. [2018-10-24 21:21:43,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-10-24 21:21:43,007 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:21:43,009 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:21:43,009 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:21:43,010 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:21:43,010 INFO L82 PathProgramCache]: Analyzing trace with hash -552195830, now seen corresponding path program 1 times [2018-10-24 21:21:43,010 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:21:43,011 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:21:43,012 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:21:43,012 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:21:43,012 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:21:43,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:21:43,279 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:21:43,280 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:21:43,280 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 21:21:43,280 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:21:43,282 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 21:21:43,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 21:21:43,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 21:21:43,283 INFO L87 Difference]: Start difference. First operand 1604 states and 2969 transitions. Second operand 5 states. [2018-10-24 21:21:56,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:21:56,778 INFO L93 Difference]: Finished difference Result 4811 states and 8985 transitions. [2018-10-24 21:21:56,781 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:21:56,781 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 112 [2018-10-24 21:21:56,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:21:56,803 INFO L225 Difference]: With dead ends: 4811 [2018-10-24 21:21:56,804 INFO L226 Difference]: Without dead ends: 3213 [2018-10-24 21:21:56,810 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-24 21:21:56,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3213 states. [2018-10-24 21:21:56,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3213 to 3197. [2018-10-24 21:21:56,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3197 states. [2018-10-24 21:21:56,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3197 states to 3197 states and 5703 transitions. [2018-10-24 21:21:56,931 INFO L78 Accepts]: Start accepts. Automaton has 3197 states and 5703 transitions. Word has length 112 [2018-10-24 21:21:56,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:21:56,931 INFO L481 AbstractCegarLoop]: Abstraction has 3197 states and 5703 transitions. [2018-10-24 21:21:56,932 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 21:21:56,934 INFO L276 IsEmpty]: Start isEmpty. Operand 3197 states and 5703 transitions. [2018-10-24 21:21:56,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-10-24 21:21:56,937 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:21:56,937 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:21:56,937 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:21:56,941 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:21:56,942 INFO L82 PathProgramCache]: Analyzing trace with hash -1294703450, now seen corresponding path program 1 times [2018-10-24 21:21:56,942 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:21:56,944 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:21:56,944 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:21:56,945 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:21:56,945 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:21:56,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:21:57,261 WARN L179 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 21:21:57,354 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 15 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:21:57,355 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:21:57,355 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:21:57,356 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 115 with the following transitions: [2018-10-24 21:21:57,358 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1987], [1995], [2003], [2011], [2019], [2027], [2035], [2043], [2051], [2059], [2067], [2071], [2073], [2076], [2084], [2092], [2100], [2108], [2116], [2124], [2132], [2140], [2148], [2156], [2164], [2172], [2180], [2188], [2196], [2204], [2212], [2220], [2228], [2236], [2244], [2252], [2260], [2268], [2276], [2284], [2292], [2300], [2308], [2316], [2324], [2332], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2384], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-10-24 21:21:57,450 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:21:57,451 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:22:02,402 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:22:02,404 INFO L272 AbstractInterpreter]: Visited 83 different actions 159 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-10-24 21:22:02,452 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:22:02,452 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:22:05,117 INFO L232 lantSequenceWeakener]: Weakened 25 states. On average, predicates are now at 80% of their original sizes. [2018-10-24 21:22:05,118 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:22:17,787 INFO L413 sIntCurrentIteration]: We have 113 unified AI predicates [2018-10-24 21:22:17,787 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:22:17,788 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:22:17,788 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [7] total 21 [2018-10-24 21:22:17,789 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:22:17,789 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-24 21:22:17,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-24 21:22:17,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2018-10-24 21:22:17,790 INFO L87 Difference]: Start difference. First operand 3197 states and 5703 transitions. Second operand 16 states. [2018-10-24 21:22:46,833 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-10-24 21:25:10,431 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-10-24 21:25:10,431 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 21:25:10,437 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 21:25:10,438 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:25:10 BoogieIcfgContainer [2018-10-24 21:25:10,438 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 21:25:10,439 INFO L168 Benchmark]: Toolchain (without parser) took 231832.03 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 3.4 GB in the end (delta: -1.9 GB). Peak memory consumption was 767.0 MB. Max. memory is 7.1 GB. [2018-10-24 21:25:10,440 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 21:25:10,441 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2373.16 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. [2018-10-24 21:25:10,441 INFO L168 Benchmark]: Boogie Procedure Inliner took 511.99 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 791.2 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 68.8 MB. Max. memory is 7.1 GB. [2018-10-24 21:25:10,442 INFO L168 Benchmark]: Boogie Preprocessor took 366.39 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: 43.1 MB). Peak memory consumption was 43.1 MB. Max. memory is 7.1 GB. [2018-10-24 21:25:10,443 INFO L168 Benchmark]: RCFGBuilder took 12153.86 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 177.2 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -183.4 MB). Peak memory consumption was 658.4 MB. Max. memory is 7.1 GB. [2018-10-24 21:25:10,444 INFO L168 Benchmark]: TraceAbstraction took 216421.35 ms. Allocated memory was 2.5 GB in the beginning and 4.2 GB in the end (delta: 1.7 GB). Free memory was 2.4 GB in the beginning and 3.4 GB in the end (delta: -974.9 MB). Peak memory consumption was 767.9 MB. Max. memory is 7.1 GB. [2018-10-24 21:25:10,450 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 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 2373.16 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 511.99 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 791.2 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 68.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 366.39 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: 43.1 MB). Peak memory consumption was 43.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 12153.86 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 177.2 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -183.4 MB). Peak memory consumption was 658.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 216421.35 ms. Allocated memory was 2.5 GB in the beginning and 4.2 GB in the end (delta: 1.7 GB). Free memory was 2.4 GB in the beginning and 3.4 GB in the end (delta: -974.9 MB). Peak memory consumption was 767.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 105]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 105). Cancelled while BasicCegarLoop was constructing difference of abstraction (3197states) and FLOYD_HOARE automaton (currently 16 states, 16 states before enhancement),while ReachableStatesComputation was computing reachable states (1274 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 216.3s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 194.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 416 SDtfs, 5292 SDslu, 271 SDs, 0 SdLazy, 7989 SolverSat, 2459 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 109.5s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 133 GetRequests, 100 SyntacticMatches, 6 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 15.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3197occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 5.0s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9921170864533697 AbsIntWeakeningRatio, 0.18584070796460178 AbsIntAvgWeakeningVarsNumRemoved, 375.86725663716817 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 2 MinimizatonAttempts, 16 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 264 NumberOfCodeBlocks, 264 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 261 ConstructedInterpolants, 0 QuantifiedInterpolants, 111041 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 46/62 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown