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/Problem15_label18_false-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 00:00:09,606 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 00:00:09,609 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 00:00:09,628 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 00:00:09,629 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 00:00:09,630 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 00:00:09,631 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 00:00:09,633 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 00:00:09,635 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 00:00:09,636 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 00:00:09,637 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 00:00:09,637 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 00:00:09,638 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 00:00:09,639 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 00:00:09,640 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 00:00:09,641 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 00:00:09,641 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 00:00:09,643 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 00:00:09,645 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 00:00:09,647 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 00:00:09,648 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 00:00:09,649 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 00:00:09,651 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-27 00:00:09,665 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-27 00:00:09,686 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 00:00:09,686 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 00:00:09,687 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 00:00:09,687 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 00:00:09,687 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 00:00:09,688 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 00:00:09,688 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 00:00:09,688 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 00:00:09,688 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 00:00:09,689 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 00:00:09,689 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 00:00:09,689 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 00:00:09,690 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 00:00:09,690 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 00:00:09,690 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 00:00:09,690 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 00:00:09,690 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 00:00:09,691 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 00:00:09,692 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 00:00:09,692 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 00:00:09,692 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 00:00:09,692 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 00:00:09,693 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 00:00:09,693 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 00:00:09,693 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 00:00:09,693 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 00:00:09,693 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 00:00:09,694 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 00:00:09,694 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 00:00:09,694 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 00:00:09,695 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 00:00:09,695 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 00:00:09,695 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 00:00:09,695 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 00:00:09,747 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 00:00:09,762 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 00:00:09,766 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 00:00:09,768 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 00:00:09,768 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 00:00:09,769 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label18_false-unreach-call_false-termination.c [2018-10-27 00:00:09,828 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/42c044ae8/b5bef275872644838895c4dd1526df4f/FLAGa250ffc81 [2018-10-27 00:00:10,449 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 00:00:10,450 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label18_false-unreach-call_false-termination.c [2018-10-27 00:00:10,482 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/42c044ae8/b5bef275872644838895c4dd1526df4f/FLAGa250ffc81 [2018-10-27 00:00:10,506 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/42c044ae8/b5bef275872644838895c4dd1526df4f [2018-10-27 00:00:10,520 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 00:00:10,523 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 00:00:10,524 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 00:00:10,524 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 00:00:10,528 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 00:00:10,529 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:00:10" (1/1) ... [2018-10-27 00:00:10,533 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2563410d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:00:10, skipping insertion in model container [2018-10-27 00:00:10,533 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:00:10" (1/1) ... [2018-10-27 00:00:10,546 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 00:00:10,663 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 00:00:11,517 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 00:00:11,522 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 00:00:11,817 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 00:00:11,840 INFO L193 MainTranslator]: Completed translation [2018-10-27 00:00:11,840 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:00:11 WrapperNode [2018-10-27 00:00:11,841 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 00:00:11,841 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 00:00:11,842 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 00:00:11,842 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 00:00:11,853 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:00:11" (1/1) ... [2018-10-27 00:00:11,909 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:00:11" (1/1) ... [2018-10-27 00:00:12,271 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 00:00:12,271 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 00:00:12,272 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 00:00:12,272 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 00:00:12,283 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:00:11" (1/1) ... [2018-10-27 00:00:12,283 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:00:11" (1/1) ... [2018-10-27 00:00:12,301 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:00:11" (1/1) ... [2018-10-27 00:00:12,302 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:00:11" (1/1) ... [2018-10-27 00:00:12,400 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:00:11" (1/1) ... [2018-10-27 00:00:12,436 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:00:11" (1/1) ... [2018-10-27 00:00:12,480 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:00:11" (1/1) ... [2018-10-27 00:00:12,539 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 00:00:12,540 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 00:00:12,540 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 00:00:12,540 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 00:00:12,541 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:00:11" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 00:00:12,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 00:00:12,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 00:00:12,619 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 00:00:12,620 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 00:00:12,620 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 00:00:12,620 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 00:00:12,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 00:00:12,620 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 00:00:12,621 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 00:00:12,621 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 00:00:20,714 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 00:00:20,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:00:20 BoogieIcfgContainer [2018-10-27 00:00:20,715 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 00:00:20,717 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 00:00:20,717 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 00:00:20,721 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 00:00:20,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 12:00:10" (1/3) ... [2018-10-27 00:00:20,722 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30d2808a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:00:20, skipping insertion in model container [2018-10-27 00:00:20,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:00:11" (2/3) ... [2018-10-27 00:00:20,722 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30d2808a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:00:20, skipping insertion in model container [2018-10-27 00:00:20,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:00:20" (3/3) ... [2018-10-27 00:00:20,725 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem15_label18_false-unreach-call_false-termination.c [2018-10-27 00:00:20,735 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 00:00:20,745 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 00:00:20,760 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 00:00:20,801 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 00:00:20,802 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 00:00:20,802 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 00:00:20,802 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 00:00:20,802 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 00:00:20,803 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 00:00:20,803 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 00:00:20,803 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 00:00:20,839 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states. [2018-10-27 00:00:20,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-10-27 00:00:20,846 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:00:20,847 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 00:00:20,850 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:00:20,855 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:00:20,856 INFO L82 PathProgramCache]: Analyzing trace with hash 1622466265, now seen corresponding path program 1 times [2018-10-27 00:00:20,858 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:00:20,906 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:00:20,906 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:00:20,906 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:00:20,907 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:00:20,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:00:21,265 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-10-27 00:00:21,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:00:21,272 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 00:00:21,272 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 00:00:21,273 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:00:21,279 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 00:00:21,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 00:00:21,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 00:00:21,299 INFO L87 Difference]: Start difference. First operand 438 states. Second operand 4 states. [2018-10-27 00:00:30,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:00:30,672 INFO L93 Difference]: Finished difference Result 1514 states and 2777 transitions. [2018-10-27 00:00:30,673 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 00:00:30,674 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2018-10-27 00:00:30,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:00:30,707 INFO L225 Difference]: With dead ends: 1514 [2018-10-27 00:00:30,708 INFO L226 Difference]: Without dead ends: 1070 [2018-10-27 00:00:30,721 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 [2018-10-27 00:00:30,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1070 states. [2018-10-27 00:00:30,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1070 to 1068. [2018-10-27 00:00:30,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1068 states. [2018-10-27 00:00:30,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1675 transitions. [2018-10-27 00:00:30,900 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1675 transitions. Word has length 15 [2018-10-27 00:00:30,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:00:30,900 INFO L481 AbstractCegarLoop]: Abstraction has 1068 states and 1675 transitions. [2018-10-27 00:00:30,901 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 00:00:30,902 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1675 transitions. [2018-10-27 00:00:30,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2018-10-27 00:00:30,909 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:00:30,909 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] [2018-10-27 00:00:30,909 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:00:30,911 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:00:30,911 INFO L82 PathProgramCache]: Analyzing trace with hash -1644253011, now seen corresponding path program 1 times [2018-10-27 00:00:30,911 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:00:30,912 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:00:30,913 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:00:30,914 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:00:30,914 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:00:31,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:00:31,189 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:00:31,189 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 00:00:31,190 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-27 00:00:31,190 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:00:31,192 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-27 00:00:31,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 00:00:31,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 00:00:31,193 INFO L87 Difference]: Start difference. First operand 1068 states and 1675 transitions. Second operand 3 states. [2018-10-27 00:00:37,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:00:37,785 INFO L93 Difference]: Finished difference Result 3059 states and 4890 transitions. [2018-10-27 00:00:37,786 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 00:00:37,786 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 85 [2018-10-27 00:00:37,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:00:37,804 INFO L225 Difference]: With dead ends: 3059 [2018-10-27 00:00:37,804 INFO L226 Difference]: Without dead ends: 1997 [2018-10-27 00:00:37,812 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 00:00:37,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1997 states. [2018-10-27 00:00:37,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1997 to 1995. [2018-10-27 00:00:37,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1995 states. [2018-10-27 00:00:37,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1995 states to 1995 states and 2748 transitions. [2018-10-27 00:00:37,882 INFO L78 Accepts]: Start accepts. Automaton has 1995 states and 2748 transitions. Word has length 85 [2018-10-27 00:00:37,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:00:37,884 INFO L481 AbstractCegarLoop]: Abstraction has 1995 states and 2748 transitions. [2018-10-27 00:00:37,884 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-27 00:00:37,884 INFO L276 IsEmpty]: Start isEmpty. Operand 1995 states and 2748 transitions. [2018-10-27 00:00:37,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2018-10-27 00:00:37,899 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:00:37,900 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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, 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] [2018-10-27 00:00:37,900 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:00:37,900 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:00:37,900 INFO L82 PathProgramCache]: Analyzing trace with hash -76739898, now seen corresponding path program 1 times [2018-10-27 00:00:37,901 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:00:37,901 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:00:37,902 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:00:37,902 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:00:37,902 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:00:37,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:00:38,294 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 17 proven. 77 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-10-27 00:00:38,295 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 00:00:38,295 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 00:00:38,296 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 196 with the following transitions: [2018-10-27 00:00:38,298 INFO L202 CegarAbsIntRunner]: [0], [1], [74], [81], [89], [93], [95], [98], [106], [114], [122], [130], [138], [146], [154], [162], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [498], [506], [514], [522], [530], [538], [546], [554], [562], [567], [571], [582], [586], [590], [594], [598], [602], [606], [610], [614], [618], [622], [626], [629], [630], [641], [645], [649], [653], [657], [668], [672], [676], [680], [684], [688], [691], [1635], [1639], [1643], [1649], [1653], [1655], [1662], [1663], [1664], [1666], [1667] [2018-10-27 00:00:38,382 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 00:00:38,383 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 00:00:40,008 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-27 00:00:51,313 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 00:00:51,315 INFO L272 AbstractInterpreter]: Visited 104 different actions 299 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-27 00:00:51,358 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:00:51,358 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 00:00:55,517 INFO L227 lantSequenceWeakener]: Weakened 24 states. On average, predicates are now at 78.6% of their original sizes. [2018-10-27 00:00:55,517 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 00:02:25,223 INFO L415 sIntCurrentIteration]: We unified 194 AI predicates to 194 [2018-10-27 00:02:25,223 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 00:02:25,224 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 00:02:25,225 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [6] total 21 [2018-10-27 00:02:25,225 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:02:25,226 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-27 00:02:25,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-27 00:02:25,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2018-10-27 00:02:25,227 INFO L87 Difference]: Start difference. First operand 1995 states and 2748 transitions. Second operand 17 states. Received shutdown request... [2018-10-27 00:04:24,334 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-10-27 00:04:24,335 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-27 00:04:24,340 WARN L205 ceAbstractionStarter]: Timeout [2018-10-27 00:04:24,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 12:04:24 BoogieIcfgContainer [2018-10-27 00:04:24,341 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-27 00:04:24,341 INFO L168 Benchmark]: Toolchain (without parser) took 253820.38 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 2.7 GB in the end (delta: -1.3 GB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-10-27 00:04:24,342 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-27 00:04:24,343 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1317.12 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: 105.9 MB). Peak memory consumption was 105.9 MB. Max. memory is 7.1 GB. [2018-10-27 00:04:24,344 INFO L168 Benchmark]: Boogie Procedure Inliner took 429.63 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 765.5 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -882.9 MB). Peak memory consumption was 33.3 MB. Max. memory is 7.1 GB. [2018-10-27 00:04:24,346 INFO L168 Benchmark]: Boogie Preprocessor took 268.06 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: 27.6 MB). Peak memory consumption was 27.6 MB. Max. memory is 7.1 GB. [2018-10-27 00:04:24,347 INFO L168 Benchmark]: RCFGBuilder took 8175.68 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 302.3 MB). Peak memory consumption was 302.3 MB. Max. memory is 7.1 GB. [2018-10-27 00:04:24,348 INFO L168 Benchmark]: TraceAbstraction took 243624.19 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.9 GB in the beginning and 2.7 GB in the end (delta: -824.5 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-10-27 00:04:24,353 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 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 1317.12 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: 105.9 MB). Peak memory consumption was 105.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 429.63 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 765.5 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -882.9 MB). Peak memory consumption was 33.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 268.06 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: 27.6 MB). Peak memory consumption was 27.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8175.68 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 302.3 MB). Peak memory consumption was 302.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 243624.19 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 1.9 GB in the beginning and 2.7 GB in the end (delta: -824.5 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 31]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 31). Cancelled while BasicCegarLoop was constructing difference of abstraction (1995states) and FLOYD_HOARE automaton (currently 17 states, 17 states before enhancement),while ReachableStatesComputation was computing reachable states (709 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 438 locations, 1 error locations. TIMEOUT Result, 243.5s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 135.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 811 SDtfs, 2811 SDslu, 308 SDs, 0 SdLazy, 4256 SolverSat, 882 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 46.2s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 213 GetRequests, 109 SyntacticMatches, 77 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 92.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1995occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 13.0s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9939208874943973 AbsIntWeakeningRatio, 0.13402061855670103 AbsIntAvgWeakeningVarsNumRemoved, 167.15463917525773 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 2 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 295 NumberOfCodeBlocks, 295 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 292 ConstructedInterpolants, 0 QuantifiedInterpolants, 211532 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 31/108 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown