java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label14_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-14 18:00:10,541 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-14 18:00:10,544 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-14 18:00:10,564 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-14 18:00:10,565 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-14 18:00:10,567 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-14 18:00:10,569 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-14 18:00:10,571 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-14 18:00:10,575 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-14 18:00:10,578 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-14 18:00:10,581 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-14 18:00:10,581 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-14 18:00:10,582 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-14 18:00:10,583 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-14 18:00:10,587 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-14 18:00:10,588 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-14 18:00:10,590 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-14 18:00:10,592 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-14 18:00:10,602 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-14 18:00:10,606 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-14 18:00:10,607 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-14 18:00:10,612 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-14 18:00:10,618 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-09-14 18:00:10,635 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-09-14 18:00:10,665 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-14 18:00:10,665 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-14 18:00:10,666 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-14 18:00:10,667 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-14 18:00:10,667 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-14 18:00:10,667 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-14 18:00:10,667 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-14 18:00:10,668 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-14 18:00:10,668 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-14 18:00:10,669 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-14 18:00:10,669 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-14 18:00:10,670 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-14 18:00:10,670 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-14 18:00:10,670 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-14 18:00:10,670 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-14 18:00:10,671 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-14 18:00:10,671 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-14 18:00:10,672 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-14 18:00:10,672 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-14 18:00:10,672 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-14 18:00:10,672 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-14 18:00:10,673 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-14 18:00:10,674 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-14 18:00:10,674 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-14 18:00:10,674 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-14 18:00:10,674 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-14 18:00:10,675 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-14 18:00:10,675 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-14 18:00:10,675 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-14 18:00:10,675 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-14 18:00:10,675 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-14 18:00:10,676 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-14 18:00:10,676 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-14 18:00:10,750 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-14 18:00:10,768 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-14 18:00:10,775 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-14 18:00:10,777 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-14 18:00:10,777 INFO L276 PluginConnector]: CDTParser initialized [2018-09-14 18:00:10,778 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label14_true-unreach-call.c [2018-09-14 18:00:11,133 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2385576be/f345dc42f56e42ac99cf5764cf64bf37/FLAG3848b0b67 [2018-09-14 18:00:11,571 INFO L277 CDTParser]: Found 1 translation units. [2018-09-14 18:00:11,572 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label14_true-unreach-call.c [2018-09-14 18:00:11,595 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2385576be/f345dc42f56e42ac99cf5764cf64bf37/FLAG3848b0b67 [2018-09-14 18:00:11,611 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2385576be/f345dc42f56e42ac99cf5764cf64bf37 [2018-09-14 18:00:11,624 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-14 18:00:11,627 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-14 18:00:11,628 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-14 18:00:11,628 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-14 18:00:11,636 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-14 18:00:11,637 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 06:00:11" (1/1) ... [2018-09-14 18:00:11,640 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77eb0580 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:00:11, skipping insertion in model container [2018-09-14 18:00:11,640 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 06:00:11" (1/1) ... [2018-09-14 18:00:11,652 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-14 18:00:12,694 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 18:00:12,712 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-14 18:00:13,088 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 18:00:13,281 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:00:13 WrapperNode [2018-09-14 18:00:13,281 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-14 18:00:13,282 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-14 18:00:13,282 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-14 18:00:13,283 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-14 18:00:13,292 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:00:13" (1/1) ... [2018-09-14 18:00:13,368 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:00:13" (1/1) ... [2018-09-14 18:00:13,573 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-14 18:00:13,573 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-14 18:00:13,573 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-14 18:00:13,574 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-14 18:00:14,129 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:00:13" (1/1) ... [2018-09-14 18:00:14,130 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:00:13" (1/1) ... [2018-09-14 18:00:14,154 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:00:13" (1/1) ... [2018-09-14 18:00:14,155 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:00:13" (1/1) ... [2018-09-14 18:00:14,255 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:00:13" (1/1) ... [2018-09-14 18:00:14,293 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:00:13" (1/1) ... [2018-09-14 18:00:14,329 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:00:13" (1/1) ... [2018-09-14 18:00:14,397 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-14 18:00:14,398 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-14 18:00:14,398 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-14 18:00:14,398 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-14 18:00:14,399 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:00:13" (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 [2018-09-14 18:00:14,470 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-14 18:00:14,471 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-14 18:00:14,471 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-14 18:00:14,471 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-14 18:00:14,471 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-14 18:00:14,472 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-14 18:00:14,472 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-14 18:00:14,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-14 18:00:14,472 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-14 18:00:14,472 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-14 18:00:25,061 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-14 18:00:25,062 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 06:00:25 BoogieIcfgContainer [2018-09-14 18:00:25,062 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-14 18:00:25,064 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-14 18:00:25,066 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-14 18:00:25,069 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-14 18:00:25,069 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.09 06:00:11" (1/3) ... [2018-09-14 18:00:25,070 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5efbce63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 06:00:25, skipping insertion in model container [2018-09-14 18:00:25,070 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 06:00:13" (2/3) ... [2018-09-14 18:00:25,071 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5efbce63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 06:00:25, skipping insertion in model container [2018-09-14 18:00:25,071 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 06:00:25" (3/3) ... [2018-09-14 18:00:25,073 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label14_true-unreach-call.c [2018-09-14 18:00:25,081 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-14 18:00:25,090 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-14 18:00:25,151 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-14 18:00:25,151 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-14 18:00:25,152 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-14 18:00:25,152 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-14 18:00:25,152 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-14 18:00:25,152 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-14 18:00:25,152 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-14 18:00:25,152 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-14 18:00:25,152 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-14 18:00:25,187 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-09-14 18:00:25,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-09-14 18:00:25,199 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:00:25,202 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 18:00:25,203 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:00:25,209 INFO L82 PathProgramCache]: Analyzing trace with hash 104391076, now seen corresponding path program 1 times [2018-09-14 18:00:25,211 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:00:25,260 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:00:25,261 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:00:25,261 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:00:25,261 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:00:25,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:00:25,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:00:25,761 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 18:00:25,761 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-14 18:00:25,761 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:00:25,767 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-14 18:00:25,784 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-14 18:00:25,785 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 18:00:25,789 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-09-14 18:00:35,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:00:35,449 INFO L93 Difference]: Finished difference Result 2162 states and 4007 transitions. [2018-09-14 18:00:35,449 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-14 18:00:35,450 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2018-09-14 18:00:35,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:00:35,490 INFO L225 Difference]: With dead ends: 2162 [2018-09-14 18:00:35,491 INFO L226 Difference]: Without dead ends: 1552 [2018-09-14 18:00:35,502 INFO L604 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 [2018-09-14 18:00:35,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1552 states. [2018-09-14 18:00:35,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1552 to 1525. [2018-09-14 18:00:35,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1525 states. [2018-09-14 18:00:35,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1525 states to 1525 states and 2696 transitions. [2018-09-14 18:00:35,662 INFO L78 Accepts]: Start accepts. Automaton has 1525 states and 2696 transitions. Word has length 54 [2018-09-14 18:00:35,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:00:35,663 INFO L480 AbstractCegarLoop]: Abstraction has 1525 states and 2696 transitions. [2018-09-14 18:00:35,663 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-14 18:00:35,664 INFO L276 IsEmpty]: Start isEmpty. Operand 1525 states and 2696 transitions. [2018-09-14 18:00:35,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-09-14 18:00:35,683 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:00:35,683 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 18:00:35,687 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:00:35,687 INFO L82 PathProgramCache]: Analyzing trace with hash -733218574, now seen corresponding path program 1 times [2018-09-14 18:00:35,687 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:00:35,688 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:00:35,689 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:00:35,689 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:00:35,689 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:00:35,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:00:36,030 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:00:36,030 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 18:00:36,031 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 18:00:36,031 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:00:36,033 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 18:00:36,033 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 18:00:36,033 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-09-14 18:00:36,034 INFO L87 Difference]: Start difference. First operand 1525 states and 2696 transitions. Second operand 6 states. [2018-09-14 18:00:53,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:00:53,754 INFO L93 Difference]: Finished difference Result 5787 states and 10682 transitions. [2018-09-14 18:00:53,755 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 18:00:53,755 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 133 [2018-09-14 18:00:53,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:00:53,788 INFO L225 Difference]: With dead ends: 5787 [2018-09-14 18:00:53,788 INFO L226 Difference]: Without dead ends: 4268 [2018-09-14 18:00:53,807 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-09-14 18:00:53,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4268 states. [2018-09-14 18:00:53,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4268 to 4242. [2018-09-14 18:00:53,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4242 states. [2018-09-14 18:00:53,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4242 states to 4242 states and 6360 transitions. [2018-09-14 18:00:53,957 INFO L78 Accepts]: Start accepts. Automaton has 4242 states and 6360 transitions. Word has length 133 [2018-09-14 18:00:53,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:00:53,958 INFO L480 AbstractCegarLoop]: Abstraction has 4242 states and 6360 transitions. [2018-09-14 18:00:53,958 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 18:00:53,958 INFO L276 IsEmpty]: Start isEmpty. Operand 4242 states and 6360 transitions. [2018-09-14 18:00:53,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-09-14 18:00:53,965 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:00:53,966 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 18:00:53,966 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:00:53,967 INFO L82 PathProgramCache]: Analyzing trace with hash 9362786, now seen corresponding path program 1 times [2018-09-14 18:00:53,967 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:00:53,968 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:00:53,968 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:00:53,968 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:00:53,968 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:00:54,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:00:54,211 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:00:54,212 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 18:00:54,212 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-14 18:00:54,212 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:00:54,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 18:00:54,213 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 18:00:54,213 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-14 18:00:54,214 INFO L87 Difference]: Start difference. First operand 4242 states and 6360 transitions. Second operand 6 states. [2018-09-14 18:01:03,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:01:03,578 INFO L93 Difference]: Finished difference Result 12710 states and 20700 transitions. [2018-09-14 18:01:03,583 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 18:01:03,583 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 134 [2018-09-14 18:01:03,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:01:03,657 INFO L225 Difference]: With dead ends: 12710 [2018-09-14 18:01:03,657 INFO L226 Difference]: Without dead ends: 8474 [2018-09-14 18:01:03,791 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-14 18:01:03,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8474 states. [2018-09-14 18:01:04,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8474 to 8389. [2018-09-14 18:01:04,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8389 states. [2018-09-14 18:01:04,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8389 states to 8389 states and 12579 transitions. [2018-09-14 18:01:04,061 INFO L78 Accepts]: Start accepts. Automaton has 8389 states and 12579 transitions. Word has length 134 [2018-09-14 18:01:04,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:01:04,062 INFO L480 AbstractCegarLoop]: Abstraction has 8389 states and 12579 transitions. [2018-09-14 18:01:04,062 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 18:01:04,065 INFO L276 IsEmpty]: Start isEmpty. Operand 8389 states and 12579 transitions. [2018-09-14 18:01:04,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 209 [2018-09-14 18:01:04,072 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:01:04,073 INFO L376 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 18:01:04,074 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:01:04,074 INFO L82 PathProgramCache]: Analyzing trace with hash 1511832028, now seen corresponding path program 1 times [2018-09-14 18:01:04,074 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:01:04,075 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:01:04,075 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:01:04,075 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:01:04,075 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:01:04,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:01:04,400 WARN L178 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-14 18:01:04,756 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 95 proven. 5 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-09-14 18:01:04,756 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:01:04,757 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 18:01:04,769 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:01:04,769 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:01:04,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:01:04,868 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:01:05,262 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 167 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:01:05,262 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:01:05,425 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-09-14 18:01:05,530 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-09-14 18:01:06,095 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 167 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:01:06,116 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:01:06,116 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 18:01:06,133 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:01:06,133 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:01:06,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:01:06,296 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:01:06,551 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-09-14 18:01:06,551 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:01:06,967 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-09-14 18:01:06,969 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 3 imperfect interpolant sequences. [2018-09-14 18:01:06,969 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [6, 5, 5] total 13 [2018-09-14 18:01:06,969 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:01:06,970 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 18:01:06,970 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 18:01:06,970 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2018-09-14 18:01:06,971 INFO L87 Difference]: Start difference. First operand 8389 states and 12579 transitions. Second operand 5 states. [2018-09-14 18:01:13,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:01:13,597 INFO L93 Difference]: Finished difference Result 20855 states and 31933 transitions. [2018-09-14 18:01:13,598 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-14 18:01:13,598 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 208 [2018-09-14 18:01:13,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:01:13,703 INFO L225 Difference]: With dead ends: 20855 [2018-09-14 18:01:13,703 INFO L226 Difference]: Without dead ends: 12437 [2018-09-14 18:01:13,766 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 840 GetRequests, 821 SyntacticMatches, 7 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2018-09-14 18:01:13,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12437 states. [2018-09-14 18:01:14,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12437 to 12427. [2018-09-14 18:01:14,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12427 states. [2018-09-14 18:01:14,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12427 states to 12427 states and 17254 transitions. [2018-09-14 18:01:14,115 INFO L78 Accepts]: Start accepts. Automaton has 12427 states and 17254 transitions. Word has length 208 [2018-09-14 18:01:14,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:01:14,116 INFO L480 AbstractCegarLoop]: Abstraction has 12427 states and 17254 transitions. [2018-09-14 18:01:14,116 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 18:01:14,116 INFO L276 IsEmpty]: Start isEmpty. Operand 12427 states and 17254 transitions. [2018-09-14 18:01:14,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2018-09-14 18:01:14,123 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:01:14,124 INFO L376 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 18:01:14,124 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:01:14,124 INFO L82 PathProgramCache]: Analyzing trace with hash -1311071484, now seen corresponding path program 1 times [2018-09-14 18:01:14,124 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:01:14,125 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:01:14,126 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:01:14,126 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:01:14,127 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:01:14,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:01:14,516 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2018-09-14 18:01:14,516 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 18:01:14,517 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-09-14 18:01:14,517 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 18:01:14,518 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-14 18:01:14,518 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-14 18:01:14,518 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 18:01:14,518 INFO L87 Difference]: Start difference. First operand 12427 states and 17254 transitions. Second operand 4 states. [2018-09-14 18:01:22,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 18:01:22,393 INFO L93 Difference]: Finished difference Result 32371 states and 48133 transitions. [2018-09-14 18:01:22,396 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-14 18:01:22,396 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 221 [2018-09-14 18:01:22,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 18:01:22,465 INFO L225 Difference]: With dead ends: 32371 [2018-09-14 18:01:22,465 INFO L226 Difference]: Without dead ends: 15849 [2018-09-14 18:01:22,540 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-09-14 18:01:22,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15849 states. [2018-09-14 18:01:23,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15849 to 13161. [2018-09-14 18:01:23,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13161 states. [2018-09-14 18:01:23,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13161 states to 13161 states and 16871 transitions. [2018-09-14 18:01:23,063 INFO L78 Accepts]: Start accepts. Automaton has 13161 states and 16871 transitions. Word has length 221 [2018-09-14 18:01:23,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 18:01:23,064 INFO L480 AbstractCegarLoop]: Abstraction has 13161 states and 16871 transitions. [2018-09-14 18:01:23,064 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-14 18:01:23,064 INFO L276 IsEmpty]: Start isEmpty. Operand 13161 states and 16871 transitions. [2018-09-14 18:01:23,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2018-09-14 18:01:23,072 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 18:01:23,072 INFO L376 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 18:01:23,072 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 18:01:23,073 INFO L82 PathProgramCache]: Analyzing trace with hash -1606849281, now seen corresponding path program 1 times [2018-09-14 18:01:23,073 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 18:01:23,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:01:23,074 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:01:23,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 18:01:23,074 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 18:01:23,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:01:23,773 WARN L178 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-09-14 18:01:24,304 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 95 proven. 59 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2018-09-14 18:01:24,304 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:01:24,304 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 18:01:24,314 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:01:24,314 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:01:24,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:01:24,409 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:01:25,019 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 99 proven. 2 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2018-09-14 18:01:25,019 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:01:26,301 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 99 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:01:26,322 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 18:01:26,322 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 18:01:26,338 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 18:01:26,339 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 18:01:26,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 18:01:26,548 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 18:01:26,905 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 99 proven. 2 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2018-09-14 18:01:26,906 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 18:01:27,748 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 99 proven. 83 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 18:01:27,750 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 18:01:27,751 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8, 7, 8] total 18 [2018-09-14 18:01:27,751 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 18:01:27,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-09-14 18:01:27,753 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-09-14 18:01:27,753 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2018-09-14 18:01:27,753 INFO L87 Difference]: Start difference. First operand 13161 states and 16871 transitions. Second operand 13 states. Received shutdown request... [2018-09-14 18:04:30,023 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 117 states. [2018-09-14 18:04:30,024 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-14 18:04:30,032 WARN L206 ceAbstractionStarter]: Timeout [2018-09-14 18:04:30,032 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.09 06:04:30 BoogieIcfgContainer [2018-09-14 18:04:30,032 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-14 18:04:30,033 INFO L168 Benchmark]: Toolchain (without parser) took 258408.60 ms. Allocated memory was 1.5 GB in the beginning and 3.2 GB in the end (delta: 1.7 GB). Free memory was 1.4 GB in the beginning and 1.9 GB in the end (delta: -484.4 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-09-14 18:04:30,037 INFO L168 Benchmark]: CDTParser took 0.22 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. [2018-09-14 18:04:30,037 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1653.54 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 179.7 MB). Peak memory consumption was 179.7 MB. Max. memory is 7.1 GB. [2018-09-14 18:04:30,038 INFO L168 Benchmark]: Boogie Procedure Inliner took 290.66 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. [2018-09-14 18:04:30,040 INFO L168 Benchmark]: Boogie Preprocessor took 824.22 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 923.8 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 123.6 MB. Max. memory is 7.1 GB. [2018-09-14 18:04:30,041 INFO L168 Benchmark]: RCFGBuilder took 10665.10 ms. Allocated memory is still 2.5 GB. Free memory was 2.3 GB in the beginning and 1.9 GB in the end (delta: 458.1 MB). Peak memory consumption was 458.1 MB. Max. memory is 7.1 GB. [2018-09-14 18:04:30,042 INFO L168 Benchmark]: TraceAbstraction took 244968.83 ms. Allocated memory was 2.5 GB in the beginning and 3.2 GB in the end (delta: 774.9 MB). Free memory was 1.9 GB in the beginning and 1.9 GB in the end (delta: -25.8 MB). Peak memory consumption was 749.1 MB. Max. memory is 7.1 GB. [2018-09-14 18:04:30,054 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 1653.54 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 179.7 MB). Peak memory consumption was 179.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 290.66 ms. Allocated memory is still 1.5 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 52.8 MB). Peak memory consumption was 52.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 824.22 ms. Allocated memory was 1.5 GB in the beginning and 2.5 GB in the end (delta: 923.8 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 123.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 10665.10 ms. Allocated memory is still 2.5 GB. Free memory was 2.3 GB in the beginning and 1.9 GB in the end (delta: 458.1 MB). Peak memory consumption was 458.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 244968.83 ms. Allocated memory was 2.5 GB in the beginning and 3.2 GB in the end (delta: 774.9 MB). Free memory was 1.9 GB in the beginning and 1.9 GB in the end (delta: -25.8 MB). Peak memory consumption was 749.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 149]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 149). Cancelled while BasicCegarLoop was constructing difference of abstraction (13161states) and FLOYD_HOARE automaton (currently 117 states, 13 states before enhancement), while ReachableStatesComputation was computing reachable states (88956 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 244.8s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 234.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1782 SDtfs, 22605 SDslu, 2674 SDs, 0 SdLazy, 46727 SolverSat, 7015 SolverUnsat, 56 SolverUnknown, 0 SolverNotchecked, 215.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2125 GetRequests, 1957 SyntacticMatches, 14 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6120 ImplicationChecksByTransitivity, 8.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13161occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.4s AutomataMinimizationTime, 5 MinimizatonAttempts, 2836 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 7.7s InterpolantComputationTime, 2018 NumberOfCodeBlocks, 2018 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 2988 ConstructedInterpolants, 196 QuantifiedInterpolants, 4185203 SizeOfPredicates, 5 NumberOfNonLiveVariables, 1752 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 14 InterpolantComputations, 6 PerfectInterpolantSequences, 1784/2022 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/Problem17_label14_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-14_18-04-30-070.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem17_label14_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-14_18-04-30-070.csv Completed graceful shutdown