java -Xmx8000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --generate-csv --csv-dir csv -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-old.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label47_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dd2f093 [2018-07-23 22:33:46,471 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-07-23 22:33:46,473 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-07-23 22:33:46,486 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-07-23 22:33:46,486 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-07-23 22:33:46,487 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-07-23 22:33:46,489 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-07-23 22:33:46,493 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-07-23 22:33:46,495 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-07-23 22:33:46,497 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-07-23 22:33:46,500 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-07-23 22:33:46,500 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-07-23 22:33:46,501 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-07-23 22:33:46,502 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-07-23 22:33:46,506 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-07-23 22:33:46,507 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-07-23 22:33:46,508 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-07-23 22:33:46,516 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-07-23 22:33:46,521 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-07-23 22:33:46,526 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-07-23 22:33:46,528 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-07-23 22:33:46,529 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-07-23 22:33:46,535 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-07-23 22:33:46,554 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-old.epf [2018-07-23 22:33:46,581 INFO L110 SettingsManager]: Loading preferences was successful [2018-07-23 22:33:46,582 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-07-23 22:33:46,583 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-07-23 22:33:46,583 INFO L133 SettingsManager]: * User list type=DISABLED [2018-07-23 22:33:46,583 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-07-23 22:33:46,584 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-07-23 22:33:46,584 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-07-23 22:33:46,584 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-07-23 22:33:46,587 INFO L133 SettingsManager]: * Log string format=TERM [2018-07-23 22:33:46,587 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-07-23 22:33:46,587 INFO L133 SettingsManager]: * Interval Domain=false [2018-07-23 22:33:46,588 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-07-23 22:33:46,589 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-07-23 22:33:46,589 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-07-23 22:33:46,589 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-07-23 22:33:46,591 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-07-23 22:33:46,591 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-07-23 22:33:46,591 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-07-23 22:33:46,591 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-07-23 22:33:46,592 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-07-23 22:33:46,592 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-07-23 22:33:46,592 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-07-23 22:33:46,593 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-07-23 22:33:46,593 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-07-23 22:33:46,593 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-07-23 22:33:46,593 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-07-23 22:33:46,594 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-07-23 22:33:46,594 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-07-23 22:33:46,594 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-07-23 22:33:46,594 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-07-23 22:33:46,594 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-07-23 22:33:46,595 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-07-23 22:33:46,595 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-07-23 22:33:46,661 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-07-23 22:33:46,678 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-07-23 22:33:46,684 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-07-23 22:33:46,687 INFO L271 PluginConnector]: Initializing CDTParser... [2018-07-23 22:33:46,687 INFO L276 PluginConnector]: CDTParser initialized [2018-07-23 22:33:46,688 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label47_true-unreach-call_false-termination.c [2018-07-23 22:33:47,041 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/905fc167e/839855b46ddd4347a37edd394293a698/FLAG8f306ea1a [2018-07-23 22:33:47,329 INFO L276 CDTParser]: Found 1 translation units. [2018-07-23 22:33:47,330 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label47_true-unreach-call_false-termination.c [2018-07-23 22:33:47,366 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/905fc167e/839855b46ddd4347a37edd394293a698/FLAG8f306ea1a [2018-07-23 22:33:47,392 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/905fc167e/839855b46ddd4347a37edd394293a698 [2018-07-23 22:33:47,406 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-07-23 22:33:47,408 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-07-23 22:33:47,412 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-07-23 22:33:47,413 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-07-23 22:33:47,420 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-07-23 22:33:47,421 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 10:33:47" (1/1) ... [2018-07-23 22:33:47,425 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22224105 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 10:33:47, skipping insertion in model container [2018-07-23 22:33:47,425 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 10:33:47" (1/1) ... [2018-07-23 22:33:47,679 INFO L179 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-07-23 22:33:48,011 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-23 22:33:48,028 INFO L422 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-07-23 22:33:48,169 INFO L175 PostProcessor]: Settings: Checked method=main [2018-07-23 22:33:48,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 10:33:48 WrapperNode [2018-07-23 22:33:48,223 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-07-23 22:33:48,224 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-07-23 22:33:48,225 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-07-23 22:33:48,225 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-07-23 22:33:48,235 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 10:33:48" (1/1) ... [2018-07-23 22:33:48,273 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 10:33:48" (1/1) ... [2018-07-23 22:33:48,359 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-07-23 22:33:48,359 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-07-23 22:33:48,359 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-07-23 22:33:48,359 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-07-23 22:33:48,373 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 10:33:48" (1/1) ... [2018-07-23 22:33:48,374 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 10:33:48" (1/1) ... [2018-07-23 22:33:48,392 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 10:33:48" (1/1) ... [2018-07-23 22:33:48,393 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 10:33:48" (1/1) ... [2018-07-23 22:33:48,592 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 10:33:48" (1/1) ... [2018-07-23 22:33:48,620 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 10:33:48" (1/1) ... [2018-07-23 22:33:48,645 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 10:33:48" (1/1) ... [2018-07-23 22:33:48,667 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-07-23 22:33:48,668 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-07-23 22:33:48,668 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-07-23 22:33:48,668 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-07-23 22:33:48,672 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 10:33:48" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-07-23 22:33:48,742 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_output [2018-07-23 22:33:48,743 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_output [2018-07-23 22:33:48,743 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-07-23 22:33:48,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-07-23 22:33:48,743 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-07-23 22:33:48,743 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-07-23 22:33:48,744 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-07-23 22:33:48,744 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-07-23 22:33:52,700 INFO L261 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-07-23 22:33:52,701 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 10:33:52 BoogieIcfgContainer [2018-07-23 22:33:52,702 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-07-23 22:33:52,703 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-07-23 22:33:52,703 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-07-23 22:33:52,707 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-07-23 22:33:52,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.07 10:33:47" (1/3) ... [2018-07-23 22:33:52,708 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4da71df9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 10:33:52, skipping insertion in model container [2018-07-23 22:33:52,708 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 10:33:48" (2/3) ... [2018-07-23 22:33:52,708 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4da71df9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 10:33:52, skipping insertion in model container [2018-07-23 22:33:52,709 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 10:33:52" (3/3) ... [2018-07-23 22:33:52,711 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label47_true-unreach-call_false-termination.c [2018-07-23 22:33:52,720 INFO L132 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-07-23 22:33:52,729 INFO L144 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-07-23 22:33:52,785 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-07-23 22:33:52,786 INFO L373 AbstractCegarLoop]: Interprodecural is true [2018-07-23 22:33:52,786 INFO L374 AbstractCegarLoop]: Hoare is true [2018-07-23 22:33:52,786 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-07-23 22:33:52,787 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-07-23 22:33:52,787 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-07-23 22:33:52,787 INFO L378 AbstractCegarLoop]: Difference is false [2018-07-23 22:33:52,787 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-07-23 22:33:52,789 INFO L384 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-07-23 22:33:52,816 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-07-23 22:33:52,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-07-23 22:33:52,824 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 22:33:52,826 INFO L353 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 22:33:52,826 INFO L414 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 22:33:52,832 INFO L82 PathProgramCache]: Analyzing trace with hash -443843092, now seen corresponding path program 1 times [2018-07-23 22:33:52,834 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 22:33:52,891 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 22:33:52,892 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 22:33:52,892 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 22:33:52,892 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 22:33:52,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 22:33:53,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 22:33:53,229 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 22:33:53,229 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-07-23 22:33:53,229 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 22:33:53,236 INFO L450 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-07-23 22:33:53,248 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-07-23 22:33:53,248 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 22:33:53,251 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 3 states. [2018-07-23 22:33:55,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 22:33:55,282 INFO L93 Difference]: Finished difference Result 691 states and 1226 transitions. [2018-07-23 22:33:55,284 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-07-23 22:33:55,285 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 40 [2018-07-23 22:33:55,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 22:33:55,306 INFO L225 Difference]: With dead ends: 691 [2018-07-23 22:33:55,307 INFO L226 Difference]: Without dead ends: 434 [2018-07-23 22:33:55,314 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-07-23 22:33:55,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2018-07-23 22:33:55,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 434. [2018-07-23 22:33:55,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2018-07-23 22:33:55,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 755 transitions. [2018-07-23 22:33:55,397 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 755 transitions. Word has length 40 [2018-07-23 22:33:55,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 22:33:55,397 INFO L471 AbstractCegarLoop]: Abstraction has 434 states and 755 transitions. [2018-07-23 22:33:55,398 INFO L472 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-07-23 22:33:55,398 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 755 transitions. [2018-07-23 22:33:55,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2018-07-23 22:33:55,405 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 22:33:55,405 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 22:33:55,406 INFO L414 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 22:33:55,406 INFO L82 PathProgramCache]: Analyzing trace with hash 160208604, now seen corresponding path program 1 times [2018-07-23 22:33:55,406 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 22:33:55,407 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 22:33:55,408 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 22:33:55,408 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 22:33:55,408 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 22:33:55,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 22:33:55,727 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 22:33:55,728 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 22:33:55,728 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-07-23 22:33:55,728 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 22:33:55,730 INFO L450 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-07-23 22:33:55,731 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-07-23 22:33:55,731 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-07-23 22:33:55,731 INFO L87 Difference]: Start difference. First operand 434 states and 755 transitions. Second operand 6 states. [2018-07-23 22:33:58,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 22:33:58,403 INFO L93 Difference]: Finished difference Result 1254 states and 2256 transitions. [2018-07-23 22:33:58,405 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-23 22:33:58,405 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 120 [2018-07-23 22:33:58,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 22:33:58,419 INFO L225 Difference]: With dead ends: 1254 [2018-07-23 22:33:58,419 INFO L226 Difference]: Without dead ends: 826 [2018-07-23 22:33:58,423 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-07-23 22:33:58,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 826 states. [2018-07-23 22:33:58,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 826 to 812. [2018-07-23 22:33:58,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 812 states. [2018-07-23 22:33:58,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 812 states to 812 states and 1377 transitions. [2018-07-23 22:33:58,487 INFO L78 Accepts]: Start accepts. Automaton has 812 states and 1377 transitions. Word has length 120 [2018-07-23 22:33:58,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 22:33:58,488 INFO L471 AbstractCegarLoop]: Abstraction has 812 states and 1377 transitions. [2018-07-23 22:33:58,488 INFO L472 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-07-23 22:33:58,488 INFO L276 IsEmpty]: Start isEmpty. Operand 812 states and 1377 transitions. [2018-07-23 22:33:58,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-07-23 22:33:58,500 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 22:33:58,503 INFO L353 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 22:33:58,503 INFO L414 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 22:33:58,504 INFO L82 PathProgramCache]: Analyzing trace with hash -1178623583, now seen corresponding path program 1 times [2018-07-23 22:33:58,504 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 22:33:58,505 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 22:33:58,506 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 22:33:58,506 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 22:33:58,506 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 22:33:58,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 22:33:58,764 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-07-23 22:33:58,764 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-07-23 22:33:58,765 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-07-23 22:33:58,765 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 22:33:58,766 INFO L450 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-07-23 22:33:58,766 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-07-23 22:33:58,766 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-23 22:33:58,766 INFO L87 Difference]: Start difference. First operand 812 states and 1377 transitions. Second operand 4 states. [2018-07-23 22:34:02,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 22:34:02,083 INFO L93 Difference]: Finished difference Result 1988 states and 3385 transitions. [2018-07-23 22:34:02,084 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-07-23 22:34:02,084 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 153 [2018-07-23 22:34:02,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 22:34:02,100 INFO L225 Difference]: With dead ends: 1988 [2018-07-23 22:34:02,101 INFO L226 Difference]: Without dead ends: 1182 [2018-07-23 22:34:02,106 INFO L573 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-07-23 22:34:02,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1182 states. [2018-07-23 22:34:02,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1182 to 1182. [2018-07-23 22:34:02,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1182 states. [2018-07-23 22:34:02,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1182 states to 1182 states and 1748 transitions. [2018-07-23 22:34:02,159 INFO L78 Accepts]: Start accepts. Automaton has 1182 states and 1748 transitions. Word has length 153 [2018-07-23 22:34:02,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 22:34:02,160 INFO L471 AbstractCegarLoop]: Abstraction has 1182 states and 1748 transitions. [2018-07-23 22:34:02,160 INFO L472 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-07-23 22:34:02,160 INFO L276 IsEmpty]: Start isEmpty. Operand 1182 states and 1748 transitions. [2018-07-23 22:34:02,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2018-07-23 22:34:02,172 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 22:34:02,172 INFO L353 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 22:34:02,173 INFO L414 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 22:34:02,173 INFO L82 PathProgramCache]: Analyzing trace with hash 688088657, now seen corresponding path program 1 times [2018-07-23 22:34:02,175 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 22:34:02,176 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 22:34:02,176 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 22:34:02,176 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 22:34:02,177 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 22:34:02,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 22:34:02,867 WARN L169 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 10 [2018-07-23 22:34:03,217 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 66 proven. 107 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-23 22:34:03,218 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 22:34:03,218 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 22:34:03,219 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 266 with the following transitions: [2018-07-23 22:34:03,222 INFO L201 CegarAbsIntRunner]: [0], [7], [15], [23], [31], [39], [47], [55], [63], [71], [79], [87], [95], [103], [111], [119], [127], [135], [143], [151], [159], [167], [175], [183], [191], [199], [207], [215], [219], [221], [224], [232], [240], [248], [256], [264], [272], [280], [288], [296], [304], [312], [320], [328], [336], [344], [352], [360], [368], [376], [384], [392], [400], [408], [416], [424], [432], [440], [448], [456], [464], [472], [480], [488], [493], [497], [501], [505], [509], [513], [517], [521], [525], [529], [533], [537], [541], [545], [549], [553], [557], [561], [565], [569], [573], [577], [581], [585], [589], [593], [597], [601], [605], [609], [613], [617], [621], [625], [629], [633], [637], [641], [645], [649], [653], [657], [660], [661], [664], [946], [947], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-07-23 22:34:03,293 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-23 22:34:03,294 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-23 22:34:09,356 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-23 22:34:09,357 INFO L272 AbstractInterpreter]: Visited 118 different actions 118 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-07-23 22:34:09,379 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-07-23 22:34:14,716 INFO L232 lantSequenceWeakener]: Weakened 257 states. On average, predicates are now at 77.74% of their original sizes. [2018-07-23 22:34:14,716 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-07-23 22:34:15,085 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-07-23 22:34:15,086 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-23 22:34:15,086 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-07-23 22:34:15,086 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 22:34:15,087 INFO L450 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-07-23 22:34:15,088 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-07-23 22:34:15,088 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-07-23 22:34:15,088 INFO L87 Difference]: Start difference. First operand 1182 states and 1748 transitions. Second operand 7 states. [2018-07-23 22:34:34,757 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-07-23 22:34:52,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 22:34:52,419 INFO L93 Difference]: Finished difference Result 2543 states and 3768 transitions. [2018-07-23 22:34:52,419 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-07-23 22:34:52,419 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 265 [2018-07-23 22:34:52,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 22:34:52,426 INFO L225 Difference]: With dead ends: 2543 [2018-07-23 22:34:52,427 INFO L226 Difference]: Without dead ends: 1367 [2018-07-23 22:34:52,431 INFO L573 BasicCegarLoop]: 2 DeclaredPredicates, 265 GetRequests, 259 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-07-23 22:34:52,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1367 states. [2018-07-23 22:34:52,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1367 to 1365. [2018-07-23 22:34:52,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1365 states. [2018-07-23 22:34:52,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1365 states to 1365 states and 1938 transitions. [2018-07-23 22:34:52,468 INFO L78 Accepts]: Start accepts. Automaton has 1365 states and 1938 transitions. Word has length 265 [2018-07-23 22:34:52,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 22:34:52,469 INFO L471 AbstractCegarLoop]: Abstraction has 1365 states and 1938 transitions. [2018-07-23 22:34:52,469 INFO L472 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-07-23 22:34:52,469 INFO L276 IsEmpty]: Start isEmpty. Operand 1365 states and 1938 transitions. [2018-07-23 22:34:52,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2018-07-23 22:34:52,477 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 22:34:52,477 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 22:34:52,478 INFO L414 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 22:34:52,478 INFO L82 PathProgramCache]: Analyzing trace with hash 1171388228, now seen corresponding path program 1 times [2018-07-23 22:34:52,478 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 22:34:52,479 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 22:34:52,479 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 22:34:52,479 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 22:34:52,480 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 22:34:52,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 22:34:53,007 WARN L169 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-07-23 22:34:53,217 WARN L169 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-07-23 22:34:54,118 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 187 proven. 189 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-23 22:34:54,119 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 22:34:54,119 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 22:34:54,119 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 351 with the following transitions: [2018-07-23 22:34:54,120 INFO L201 CegarAbsIntRunner]: [0], [7], [15], [23], [31], [39], [47], [55], [63], [71], [79], [87], [95], [103], [111], [119], [127], [135], [143], [151], [159], [167], [175], [183], [191], [199], [207], [215], [219], [221], [224], [232], [240], [248], [256], [264], [272], [280], [288], [296], [304], [312], [320], [328], [336], [344], [352], [360], [368], [376], [384], [392], [400], [408], [416], [424], [432], [440], [448], [456], [464], [472], [480], [488], [493], [497], [501], [505], [509], [513], [517], [521], [525], [529], [533], [537], [541], [545], [549], [552], [553], [557], [561], [565], [569], [573], [577], [581], [585], [589], [593], [597], [601], [605], [609], [613], [617], [621], [625], [629], [633], [637], [641], [645], [649], [653], [657], [660], [661], [664], [946], [947], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-07-23 22:34:54,126 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-23 22:34:54,126 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-23 22:35:07,368 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-23 22:35:07,369 INFO L272 AbstractInterpreter]: Visited 122 different actions 237 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-07-23 22:35:07,378 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-07-23 22:35:17,845 INFO L232 lantSequenceWeakener]: Weakened 348 states. On average, predicates are now at 77.68% of their original sizes. [2018-07-23 22:35:17,845 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-07-23 22:35:19,644 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-07-23 22:35:19,645 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-23 22:35:19,645 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [12] total 21 [2018-07-23 22:35:19,646 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 22:35:19,647 INFO L450 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-23 22:35:19,647 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-23 22:35:19,647 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2018-07-23 22:35:19,647 INFO L87 Difference]: Start difference. First operand 1365 states and 1938 transitions. Second operand 11 states. [2018-07-23 22:35:57,722 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-07-23 22:36:20,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-07-23 22:36:20,538 INFO L93 Difference]: Finished difference Result 2913 states and 4241 transitions. [2018-07-23 22:36:20,539 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-07-23 22:36:20,539 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 350 [2018-07-23 22:36:20,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-07-23 22:36:20,548 INFO L225 Difference]: With dead ends: 2913 [2018-07-23 22:36:20,548 INFO L226 Difference]: Without dead ends: 1737 [2018-07-23 22:36:20,553 INFO L573 BasicCegarLoop]: 2 DeclaredPredicates, 356 GetRequests, 312 SyntacticMatches, 28 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2018-07-23 22:36:20,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1737 states. [2018-07-23 22:36:20,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1737 to 1734. [2018-07-23 22:36:20,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1734 states. [2018-07-23 22:36:20,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1734 states to 1734 states and 2325 transitions. [2018-07-23 22:36:20,602 INFO L78 Accepts]: Start accepts. Automaton has 1734 states and 2325 transitions. Word has length 350 [2018-07-23 22:36:20,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-07-23 22:36:20,603 INFO L471 AbstractCegarLoop]: Abstraction has 1734 states and 2325 transitions. [2018-07-23 22:36:20,603 INFO L472 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-07-23 22:36:20,603 INFO L276 IsEmpty]: Start isEmpty. Operand 1734 states and 2325 transitions. [2018-07-23 22:36:20,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2018-07-23 22:36:20,613 INFO L345 BasicCegarLoop]: Found error trace [2018-07-23 22:36:20,613 INFO L353 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-07-23 22:36:20,613 INFO L414 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_eca_rers_____Problem___label___true_unreach_call_false_termination_c__calculate_outputErr0AssertViolationERROR_FUNCTION]=== [2018-07-23 22:36:20,614 INFO L82 PathProgramCache]: Analyzing trace with hash -1983838440, now seen corresponding path program 1 times [2018-07-23 22:36:20,614 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-07-23 22:36:20,615 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 22:36:20,615 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-07-23 22:36:20,615 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-07-23 22:36:20,615 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-07-23 22:36:20,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-07-23 22:36:21,725 INFO L134 CoverageAnalysis]: Checked inductivity of 433 backedges. 112 proven. 316 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-07-23 22:36:21,726 INFO L297 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-07-23 22:36:21,726 INFO L191 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-07-23 22:36:21,726 INFO L199 CegarAbsIntRunner]: Running AI on error trace of length 377 with the following transitions: [2018-07-23 22:36:21,727 INFO L201 CegarAbsIntRunner]: [0], [7], [15], [23], [31], [39], [47], [55], [63], [71], [79], [87], [95], [103], [111], [119], [127], [135], [143], [151], [159], [167], [175], [183], [191], [199], [207], [215], [219], [221], [224], [232], [240], [248], [256], [264], [272], [280], [288], [296], [304], [312], [320], [328], [336], [344], [352], [360], [368], [376], [384], [392], [400], [408], [416], [424], [432], [440], [448], [456], [464], [472], [480], [488], [493], [497], [501], [505], [509], [513], [517], [521], [525], [529], [533], [537], [541], [545], [549], [553], [557], [561], [565], [569], [573], [577], [581], [585], [589], [593], [597], [601], [605], [609], [613], [617], [621], [625], [629], [633], [637], [641], [645], [649], [653], [656], [657], [660], [661], [664], [946], [947], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-07-23 22:36:21,732 INFO L148 AbstractInterpreter]: Using domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-07-23 22:36:21,732 INFO L101 FixpointEngine]: Starting fixpoint engine with domain CompoundDomain (maxUnwinding=3, maxParallelStates=2) [2018-07-23 22:36:41,641 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-07-23 22:36:41,642 INFO L272 AbstractInterpreter]: Visited 122 different actions 238 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-07-23 22:36:41,645 INFO L395 sIntCurrentIteration]: Generating AbsInt predicates [2018-07-23 22:37:01,285 INFO L232 lantSequenceWeakener]: Weakened 374 states. On average, predicates are now at 77.65% of their original sizes. [2018-07-23 22:37:01,285 INFO L408 sIntCurrentIteration]: Unifying AI predicates [2018-07-23 22:37:02,494 INFO L419 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-07-23 22:37:02,494 INFO L309 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-07-23 22:37:02,495 INFO L324 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [15] total 24 [2018-07-23 22:37:02,495 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-07-23 22:37:02,496 INFO L450 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-07-23 22:37:02,497 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-07-23 22:37:02,497 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2018-07-23 22:37:02,498 INFO L87 Difference]: Start difference. First operand 1734 states and 2325 transitions. Second operand 11 states. [2018-07-23 22:37:34,203 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-07-23 22:37:41,508 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-07-23 22:37:41,508 WARN L540 AbstractCegarLoop]: Verification canceled [2018-07-23 22:37:41,513 WARN L202 ceAbstractionStarter]: Timeout [2018-07-23 22:37:41,513 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.07 10:37:41 BoogieIcfgContainer [2018-07-23 22:37:41,513 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-07-23 22:37:41,514 INFO L168 Benchmark]: Toolchain (without parser) took 234107.40 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 1.8 GB in the end (delta: -355.6 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2018-07-23 22:37:41,516 INFO L168 Benchmark]: CDTParser took 0.25 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. [2018-07-23 22:37:41,516 INFO L168 Benchmark]: CACSL2BoogieTranslator took 812.13 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-07-23 22:37:41,517 INFO L168 Benchmark]: Boogie Procedure Inliner took 134.50 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-07-23 22:37:41,518 INFO L168 Benchmark]: Boogie Preprocessor took 308.54 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 790.1 MB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -891.4 MB). Peak memory consumption was 34.6 MB. Max. memory is 7.1 GB. [2018-07-23 22:37:41,519 INFO L168 Benchmark]: RCFGBuilder took 4034.02 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.1 GB in the end (delta: 149.2 MB). Peak memory consumption was 149.2 MB. Max. memory is 7.1 GB. [2018-07-23 22:37:41,520 INFO L168 Benchmark]: TraceAbstraction took 228810.48 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 333.7 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-07-23 22:37:41,526 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 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 812.13 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 134.50 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 308.54 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 790.1 MB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -891.4 MB). Peak memory consumption was 34.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 4034.02 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.1 GB in the end (delta: 149.2 MB). Peak memory consumption was 149.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 228810.48 ms. Allocated memory was 2.3 GB in the beginning and 4.2 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 1.8 GB in the end (delta: 333.7 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 103]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 103). Cancelled while BasicCegarLoop was constructing difference of abstraction (1734states) and interpolant automaton (currently 14 states, 11 states before enhancement), while ReachableStatesComputation was computing reachable states (1016 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 228.7s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 145.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 862 SDtfs, 3666 SDslu, 1045 SDs, 0 SdLazy, 5490 SolverSat, 1233 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 98.9s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 1024 GetRequests, 916 SyntacticMatches, 59 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 507 ImplicationChecksByTransitivity, 4.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1734occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 39.3s AbstIntTime, 3 AbstIntIterations, 3 AbstIntStrong, 0.9960742680279292 AbsIntWeakeningRatio, 0.09109311740890688 AbsIntAvgWeakeningVarsNumRemoved, 257.7793522267207 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 5 MinimizatonAttempts, 19 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.4s InterpolantComputationTime, 1304 NumberOfCodeBlocks, 1304 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 1298 ConstructedInterpolants, 0 QuantifiedInterpolants, 4379240 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 446/1058 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem14_label47_true-unreach-call_false-termination.c_svcomp-Reach-64bit-Taipan_Default-old.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-07-23_22-37-41-542.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem14_label47_true-unreach-call_false-termination.c_svcomp-Reach-64bit-Taipan_Default-old.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-07-23_22-37-41-542.csv Completed graceful shutdown