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_label31_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 22:48:49,596 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 22:48:49,599 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 22:48:49,611 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 22:48:49,612 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 22:48:49,613 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 22:48:49,614 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 22:48:49,617 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 22:48:49,619 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 22:48:49,620 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 22:48:49,621 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 22:48:49,621 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 22:48:49,622 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 22:48:49,623 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 22:48:49,625 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 22:48:49,626 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 22:48:49,627 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 22:48:49,629 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 22:48:49,631 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 22:48:49,633 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 22:48:49,634 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 22:48:49,636 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 22:48:49,639 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-23 22:48:49,639 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-23 22:48:49,639 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-23 22:48:49,640 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-23 22:48:49,641 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-23 22:48:49,642 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-23 22:48:49,643 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-23 22:48:49,644 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-23 22:48:49,644 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-23 22:48:49,645 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-23 22:48:49,648 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 [2018-10-23 22:48:49,665 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 22:48:49,665 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 22:48:49,666 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 22:48:49,666 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-23 22:48:49,667 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-23 22:48:49,667 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-23 22:48:49,667 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-23 22:48:49,668 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-23 22:48:49,668 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-23 22:48:49,668 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-23 22:48:49,668 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-23 22:48:49,669 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-23 22:48:49,669 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 22:48:49,670 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 22:48:49,670 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 22:48:49,670 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 22:48:49,670 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 22:48:49,671 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 22:48:49,671 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 22:48:49,671 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 22:48:49,672 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 22:48:49,672 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 22:48:49,672 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 22:48:49,672 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 22:48:49,673 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 22:48:49,673 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 22:48:49,673 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 22:48:49,673 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 22:48:49,673 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-23 22:48:49,674 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 22:48:49,674 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 22:48:49,674 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 22:48:49,674 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 22:48:49,675 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-23 22:48:49,720 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 22:48:49,748 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 22:48:49,752 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 22:48:49,754 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 22:48:49,754 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 22:48:49,755 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label31_false-unreach-call.c [2018-10-23 22:48:49,835 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/696cb414f/4128336e7ba74f438d4ea11e2f7abe68/FLAG261136493 [2018-10-23 22:48:50,675 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 22:48:50,678 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label31_false-unreach-call.c [2018-10-23 22:48:50,705 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/696cb414f/4128336e7ba74f438d4ea11e2f7abe68/FLAG261136493 [2018-10-23 22:48:50,730 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/696cb414f/4128336e7ba74f438d4ea11e2f7abe68 [2018-10-23 22:48:50,743 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 22:48:50,745 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 22:48:50,747 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 22:48:50,747 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 22:48:50,756 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 22:48:50,757 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:48:50" (1/1) ... [2018-10-23 22:48:50,761 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5392a41c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:48:50, skipping insertion in model container [2018-10-23 22:48:50,761 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 10:48:50" (1/1) ... [2018-10-23 22:48:50,774 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 22:48:50,910 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 22:48:51,949 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 22:48:51,955 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 22:48:52,428 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 22:48:52,452 INFO L193 MainTranslator]: Completed translation [2018-10-23 22:48:52,453 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:48:52 WrapperNode [2018-10-23 22:48:52,453 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 22:48:52,454 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 22:48:52,454 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 22:48:52,455 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 22:48:52,465 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:48:52" (1/1) ... [2018-10-23 22:48:52,530 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:48:52" (1/1) ... [2018-10-23 22:48:52,943 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 22:48:52,944 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 22:48:52,944 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 22:48:52,944 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 22:48:52,955 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:48:52" (1/1) ... [2018-10-23 22:48:52,956 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:48:52" (1/1) ... [2018-10-23 22:48:52,993 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:48:52" (1/1) ... [2018-10-23 22:48:52,993 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:48:52" (1/1) ... [2018-10-23 22:48:53,128 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:48:52" (1/1) ... [2018-10-23 22:48:53,170 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:48:52" (1/1) ... [2018-10-23 22:48:53,234 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:48:52" (1/1) ... [2018-10-23 22:48:53,312 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 22:48:53,313 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 22:48:53,313 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 22:48:53,313 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 22:48:53,314 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:48:52" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 22:48:53,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-23 22:48:53,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-23 22:48:53,390 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-23 22:48:53,390 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-23 22:48:53,391 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-23 22:48:53,391 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-23 22:48:53,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 22:48:53,391 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 22:48:53,391 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-23 22:48:53,393 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-23 22:49:05,895 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 22:49:05,896 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:49:05 BoogieIcfgContainer [2018-10-23 22:49:05,896 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 22:49:05,897 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 22:49:05,898 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 22:49:05,901 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 22:49:05,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 10:48:50" (1/3) ... [2018-10-23 22:49:05,902 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6532d45b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:49:05, skipping insertion in model container [2018-10-23 22:49:05,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 10:48:52" (2/3) ... [2018-10-23 22:49:05,903 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6532d45b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 10:49:05, skipping insertion in model container [2018-10-23 22:49:05,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 10:49:05" (3/3) ... [2018-10-23 22:49:05,905 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label31_false-unreach-call.c [2018-10-23 22:49:05,916 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 22:49:05,926 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 22:49:05,945 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 22:49:05,990 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 22:49:05,991 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 22:49:05,991 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 22:49:05,991 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 22:49:05,991 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 22:49:05,992 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 22:49:05,992 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 22:49:05,992 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 22:49:06,038 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-10-23 22:49:06,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-23 22:49:06,046 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:49:06,047 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 22:49:06,050 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:49:06,058 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:49:06,059 INFO L82 PathProgramCache]: Analyzing trace with hash -1332199658, now seen corresponding path program 1 times [2018-10-23 22:49:06,062 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:49:06,124 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:49:06,124 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:49:06,124 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:49:06,125 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:49:06,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:49:06,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:49:06,525 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 22:49:06,525 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 22:49:06,525 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:49:06,531 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 22:49:06,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 22:49:06,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 22:49:06,552 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-10-23 22:49:16,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 22:49:16,770 INFO L93 Difference]: Finished difference Result 2118 states and 3937 transitions. [2018-10-23 22:49:16,771 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 22:49:16,772 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2018-10-23 22:49:16,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 22:49:16,800 INFO L225 Difference]: With dead ends: 2118 [2018-10-23 22:49:16,800 INFO L226 Difference]: Without dead ends: 1508 [2018-10-23 22:49:16,812 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 22:49:16,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1508 states. [2018-10-23 22:49:16,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1508 to 1039. [2018-10-23 22:49:16,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1039 states. [2018-10-23 22:49:16,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 1596 transitions. [2018-10-23 22:49:16,977 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 1596 transitions. Word has length 15 [2018-10-23 22:49:16,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 22:49:16,978 INFO L481 AbstractCegarLoop]: Abstraction has 1039 states and 1596 transitions. [2018-10-23 22:49:16,978 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 22:49:16,978 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 1596 transitions. [2018-10-23 22:49:16,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-10-23 22:49:16,985 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 22:49:16,985 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 22:49:16,986 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 22:49:16,986 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:49:16,986 INFO L82 PathProgramCache]: Analyzing trace with hash 1251140705, now seen corresponding path program 1 times [2018-10-23 22:49:16,986 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-23 22:49:16,989 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:49:16,989 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:49:16,989 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 22:49:16,990 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-23 22:49:17,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:49:17,440 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:49:17,441 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 22:49:17,441 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-23 22:49:17,442 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 91 with the following transitions: [2018-10-23 22:49:17,444 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [730], [732], [735], [743], [751], [759], [767], [775], [783], [791], [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] [2018-10-23 22:49:17,540 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-23 22:49:17,540 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-23 22:49:19,159 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-23 22:49:39,734 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-23 22:49:39,735 INFO L272 AbstractInterpreter]: Visited 83 different actions 543 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. [2018-10-23 22:49:39,747 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 22:49:39,748 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-23 22:49:39,748 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 22:49:39,749 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 22:49:39,758 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 22:49:39,758 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-23 22:49:39,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 22:49:39,825 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 22:49:46,326 WARN L179 SmtUtils]: Spent 6.09 s on a formula simplification that was a NOOP. DAG size: 42 [2018-10-23 22:49:46,479 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:49:46,479 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-23 22:49:47,094 WARN L179 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 17 [2018-10-23 22:49:47,832 WARN L179 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 25 [2018-10-23 22:49:48,154 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 22:49:48,192 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-10-23 22:49:48,192 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 13 [2018-10-23 22:49:48,193 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-23 22:49:48,194 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-23 22:49:48,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-23 22:49:48,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2018-10-23 22:49:48,198 INFO L87 Difference]: Start difference. First operand 1039 states and 1596 transitions. Second operand 6 states. Received shutdown request... [2018-10-23 22:53:15,754 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-23 22:53:15,755 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 22:53:15,761 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 22:53:15,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 10:53:15 BoogieIcfgContainer [2018-10-23 22:53:15,762 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 22:53:15,764 INFO L168 Benchmark]: Toolchain (without parser) took 265018.33 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 3.2 GB in the end (delta: -1.8 GB). Peak memory consumption was 850.0 MB. Max. memory is 7.1 GB. [2018-10-23 22:53:15,765 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. [2018-10-23 22:53:15,766 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1706.79 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: 126.8 MB). Peak memory consumption was 126.8 MB. Max. memory is 7.1 GB. [2018-10-23 22:53:15,767 INFO L168 Benchmark]: Boogie Procedure Inliner took 489.11 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 767.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -920.7 MB). Peak memory consumption was 56.2 MB. Max. memory is 7.1 GB. [2018-10-23 22:53:15,769 INFO L168 Benchmark]: Boogie Preprocessor took 369.05 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: 28.3 MB). Peak memory consumption was 28.3 MB. Max. memory is 7.1 GB. [2018-10-23 22:53:15,770 INFO L168 Benchmark]: RCFGBuilder took 12583.36 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: 483.4 MB). Peak memory consumption was 483.4 MB. Max. memory is 7.1 GB. [2018-10-23 22:53:15,770 INFO L168 Benchmark]: TraceAbstraction took 249864.25 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 3.2 GB in the end (delta: -1.5 GB). Peak memory consumption was 364.7 MB. Max. memory is 7.1 GB. [2018-10-23 22:53:15,780 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 1706.79 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: 126.8 MB). Peak memory consumption was 126.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 489.11 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 767.6 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -920.7 MB). Peak memory consumption was 56.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 369.05 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: 28.3 MB). Peak memory consumption was 28.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 12583.36 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: 483.4 MB). Peak memory consumption was 483.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 249864.25 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 3.2 GB in the end (delta: -1.5 GB). Peak memory consumption was 364.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 32]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 32). Cancelled while BasicCegarLoop was constructing difference of abstraction (1039states) and FLOYD_HOARE automaton (currently 6 states, 6 states before enhancement),while ReachableStatesComputation was computing reachable states (1623 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 249.7s OverallTime, 2 OverallIterations, 2 TraceHistogramMax, 217.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 664 SDtfs, 1851 SDslu, 456 SDs, 0 SdLazy, 4293 SolverSat, 1138 SolverUnsat, 99 SolverUnknown, 0 SolverNotchecked, 214.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 194 GetRequests, 179 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 8.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1039occurred in iteration=1, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 22.3s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 1 MinimizatonAttempts, 469 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 8.9s InterpolantComputationTime, 195 NumberOfCodeBlocks, 195 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 281 ConstructedInterpolants, 80 QuantifiedInterpolants, 281505 SizeOfPredicates, 3 NumberOfNonLiveVariables, 241 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 12/24 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown