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/loop-new/count_by_1_true-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-14 15:53:23,604 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-14 15:53:23,606 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-14 15:53:23,619 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-14 15:53:23,619 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-14 15:53:23,620 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-14 15:53:23,622 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-14 15:53:23,623 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-14 15:53:23,625 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-14 15:53:23,626 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-14 15:53:23,627 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-14 15:53:23,627 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-14 15:53:23,628 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-14 15:53:23,629 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-14 15:53:23,630 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-14 15:53:23,631 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-14 15:53:23,632 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-14 15:53:23,634 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-14 15:53:23,636 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-14 15:53:23,637 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-14 15:53:23,638 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-14 15:53:23,639 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-14 15:53:23,642 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-09-14 15:53:23,651 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 15:53:23,668 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-14 15:53:23,669 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-14 15:53:23,670 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-14 15:53:23,670 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-14 15:53:23,670 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-14 15:53:23,671 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-14 15:53:23,671 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-14 15:53:23,671 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-14 15:53:23,671 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-14 15:53:23,671 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-14 15:53:23,672 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-14 15:53:23,672 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-14 15:53:23,673 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-14 15:53:23,674 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-14 15:53:23,674 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-14 15:53:23,674 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-14 15:53:23,674 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-14 15:53:23,674 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-14 15:53:23,675 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-14 15:53:23,675 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-14 15:53:23,675 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-14 15:53:23,675 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-14 15:53:23,677 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-14 15:53:23,677 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-14 15:53:23,677 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-14 15:53:23,677 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-14 15:53:23,677 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-14 15:53:23,678 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-14 15:53:23,678 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-14 15:53:23,678 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-14 15:53:23,678 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-14 15:53:23,678 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-14 15:53:23,679 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-14 15:53:23,727 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-14 15:53:23,745 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-14 15:53:23,749 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-14 15:53:23,751 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-14 15:53:23,752 INFO L276 PluginConnector]: CDTParser initialized [2018-09-14 15:53:23,752 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-new/count_by_1_true-unreach-call_true-termination.i [2018-09-14 15:53:24,120 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f33556a7f/4160fdc28f7a4ec5b0613f0c4179e2d7/FLAGd9cd9cb2a [2018-09-14 15:53:24,261 INFO L277 CDTParser]: Found 1 translation units. [2018-09-14 15:53:24,262 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-new/count_by_1_true-unreach-call_true-termination.i [2018-09-14 15:53:24,268 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f33556a7f/4160fdc28f7a4ec5b0613f0c4179e2d7/FLAGd9cd9cb2a [2018-09-14 15:53:24,286 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f33556a7f/4160fdc28f7a4ec5b0613f0c4179e2d7 [2018-09-14 15:53:24,296 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-14 15:53:24,299 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-14 15:53:24,301 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-14 15:53:24,301 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-14 15:53:24,309 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-14 15:53:24,310 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 03:53:24" (1/1) ... [2018-09-14 15:53:24,313 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60d8d9e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 03:53:24, skipping insertion in model container [2018-09-14 15:53:24,313 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 03:53:24" (1/1) ... [2018-09-14 15:53:24,324 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-14 15:53:24,500 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 15:53:24,517 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-14 15:53:24,521 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 15:53:24,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 03:53:24 WrapperNode [2018-09-14 15:53:24,533 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-14 15:53:24,534 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-14 15:53:24,534 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-14 15:53:24,535 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-14 15:53:24,545 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 03:53:24" (1/1) ... [2018-09-14 15:53:24,551 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 03:53:24" (1/1) ... [2018-09-14 15:53:24,557 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-14 15:53:24,558 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-14 15:53:24,558 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-14 15:53:24,558 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-14 15:53:24,569 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 03:53:24" (1/1) ... [2018-09-14 15:53:24,569 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 03:53:24" (1/1) ... [2018-09-14 15:53:24,570 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 03:53:24" (1/1) ... [2018-09-14 15:53:24,570 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 03:53:24" (1/1) ... [2018-09-14 15:53:24,575 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 03:53:24" (1/1) ... [2018-09-14 15:53:24,581 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 03:53:24" (1/1) ... [2018-09-14 15:53:24,582 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 03:53:24" (1/1) ... [2018-09-14 15:53:24,584 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-14 15:53:24,585 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-14 15:53:24,585 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-14 15:53:24,585 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-14 15:53:24,586 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 03:53:24" (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 15:53:24,650 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-14 15:53:24,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-14 15:53:24,650 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-14 15:53:24,650 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-14 15:53:24,651 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-14 15:53:24,651 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-14 15:53:24,651 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-09-14 15:53:24,651 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-09-14 15:53:24,916 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-14 15:53:24,917 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 03:53:24 BoogieIcfgContainer [2018-09-14 15:53:24,917 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-14 15:53:24,918 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-14 15:53:24,918 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-14 15:53:24,921 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-14 15:53:24,922 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.09 03:53:24" (1/3) ... [2018-09-14 15:53:24,923 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38edd47e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 03:53:24, skipping insertion in model container [2018-09-14 15:53:24,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 03:53:24" (2/3) ... [2018-09-14 15:53:24,923 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38edd47e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 03:53:24, skipping insertion in model container [2018-09-14 15:53:24,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 03:53:24" (3/3) ... [2018-09-14 15:53:24,925 INFO L112 eAbstractionObserver]: Analyzing ICFG count_by_1_true-unreach-call_true-termination.i [2018-09-14 15:53:24,933 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-14 15:53:24,940 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-14 15:53:24,984 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-14 15:53:24,985 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-14 15:53:24,985 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-14 15:53:24,985 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-14 15:53:24,985 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-14 15:53:24,985 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-14 15:53:24,986 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-14 15:53:24,986 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-14 15:53:24,986 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-14 15:53:25,002 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2018-09-14 15:53:25,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-09-14 15:53:25,008 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 15:53:25,010 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 15:53:25,011 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 15:53:25,016 INFO L82 PathProgramCache]: Analyzing trace with hash 563245249, now seen corresponding path program 1 times [2018-09-14 15:53:25,019 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 15:53:25,073 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:53:25,073 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 15:53:25,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:53:25,074 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 15:53:25,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 15:53:25,127 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 15:53:25,129 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 15:53:25,129 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-14 15:53:25,130 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 15:53:25,133 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-14 15:53:25,145 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-14 15:53:25,146 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-14 15:53:25,148 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2018-09-14 15:53:25,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 15:53:25,169 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2018-09-14 15:53:25,170 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-14 15:53:25,171 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-09-14 15:53:25,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 15:53:25,180 INFO L225 Difference]: With dead ends: 32 [2018-09-14 15:53:25,181 INFO L226 Difference]: Without dead ends: 13 [2018-09-14 15:53:25,188 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-14 15:53:25,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-09-14 15:53:25,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-09-14 15:53:25,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-09-14 15:53:25,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2018-09-14 15:53:25,237 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 10 [2018-09-14 15:53:25,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 15:53:25,238 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2018-09-14 15:53:25,238 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-14 15:53:25,238 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2018-09-14 15:53:25,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-09-14 15:53:25,239 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 15:53:25,239 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 15:53:25,240 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 15:53:25,240 INFO L82 PathProgramCache]: Analyzing trace with hash -496423, now seen corresponding path program 1 times [2018-09-14 15:53:25,240 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 15:53:25,241 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:53:25,241 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 15:53:25,242 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:53:25,242 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 15:53:25,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 15:53:25,313 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 15:53:25,313 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 15:53:25,313 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-14 15:53:25,313 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 15:53:25,316 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-14 15:53:25,316 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-14 15:53:25,316 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 15:53:25,317 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 3 states. [2018-09-14 15:53:25,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 15:53:25,395 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-09-14 15:53:25,396 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-14 15:53:25,396 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-09-14 15:53:25,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 15:53:25,398 INFO L225 Difference]: With dead ends: 21 [2018-09-14 15:53:25,398 INFO L226 Difference]: Without dead ends: 16 [2018-09-14 15:53:25,399 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-14 15:53:25,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-09-14 15:53:25,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2018-09-14 15:53:25,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-09-14 15:53:25,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2018-09-14 15:53:25,405 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 11 [2018-09-14 15:53:25,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 15:53:25,406 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2018-09-14 15:53:25,406 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-14 15:53:25,406 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2018-09-14 15:53:25,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-09-14 15:53:25,407 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 15:53:25,408 INFO L376 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 15:53:25,408 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 15:53:25,408 INFO L82 PathProgramCache]: Analyzing trace with hash -1177044387, now seen corresponding path program 1 times [2018-09-14 15:53:25,408 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 15:53:25,418 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:53:25,418 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 15:53:25,418 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:53:25,418 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 15:53:25,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 15:53:25,522 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:53:25,522 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 15:53:25,522 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 15:53:25,535 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 15:53:25,536 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 15:53:25,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 15:53:25,565 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 15:53:25,584 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:53:25,585 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 15:53:25,662 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:53:25,683 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 15:53:25,683 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 15:53:25,700 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 15:53:25,701 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 15:53:25,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 15:53:25,716 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 15:53:25,721 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:53:25,721 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 15:53:25,761 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:53:25,766 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 15:53:25,766 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4] total 6 [2018-09-14 15:53:25,766 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 15:53:25,767 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-14 15:53:25,767 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-14 15:53:25,767 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-09-14 15:53:25,768 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 4 states. [2018-09-14 15:53:25,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 15:53:25,802 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2018-09-14 15:53:25,804 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-14 15:53:25,806 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2018-09-14 15:53:25,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 15:53:25,807 INFO L225 Difference]: With dead ends: 24 [2018-09-14 15:53:25,807 INFO L226 Difference]: Without dead ends: 19 [2018-09-14 15:53:25,809 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-09-14 15:53:25,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2018-09-14 15:53:25,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2018-09-14 15:53:25,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-09-14 15:53:25,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-09-14 15:53:25,815 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 14 [2018-09-14 15:53:25,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 15:53:25,815 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2018-09-14 15:53:25,816 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-14 15:53:25,816 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2018-09-14 15:53:25,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-09-14 15:53:25,817 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 15:53:25,817 INFO L376 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 15:53:25,817 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 15:53:25,817 INFO L82 PathProgramCache]: Analyzing trace with hash -489337255, now seen corresponding path program 2 times [2018-09-14 15:53:25,818 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 15:53:25,819 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:53:25,819 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 15:53:25,819 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:53:25,819 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 15:53:25,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 15:53:25,874 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:53:25,874 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 15:53:25,875 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 15:53:25,888 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-14 15:53:25,889 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-09-14 15:53:25,922 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-14 15:53:25,922 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-14 15:53:25,924 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 15:53:25,930 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:53:25,931 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 15:53:26,175 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:53:26,207 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 15:53:26,207 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 15:53:26,235 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-14 15:53:26,236 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-09-14 15:53:26,252 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-14 15:53:26,253 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-14 15:53:26,257 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 15:53:26,268 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:53:26,268 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 15:53:26,298 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [MP cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (5)] Exception during sending of exit command (exit): Broken pipe [2018-09-14 15:53:26,302 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 15:53:26,302 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5] total 8 [2018-09-14 15:53:26,303 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 15:53:26,303 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 15:53:26,303 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 15:53:26,304 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-09-14 15:53:26,304 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 5 states. [2018-09-14 15:53:26,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 15:53:26,358 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2018-09-14 15:53:26,358 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-14 15:53:26,358 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2018-09-14 15:53:26,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 15:53:26,360 INFO L225 Difference]: With dead ends: 27 [2018-09-14 15:53:26,360 INFO L226 Difference]: Without dead ends: 22 [2018-09-14 15:53:26,360 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2018-09-14 15:53:26,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-09-14 15:53:26,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2018-09-14 15:53:26,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-09-14 15:53:26,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2018-09-14 15:53:26,365 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 17 [2018-09-14 15:53:26,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 15:53:26,366 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2018-09-14 15:53:26,366 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 15:53:26,366 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2018-09-14 15:53:26,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-09-14 15:53:26,367 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 15:53:26,367 INFO L376 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 15:53:26,367 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 15:53:26,368 INFO L82 PathProgramCache]: Analyzing trace with hash -169763, now seen corresponding path program 3 times [2018-09-14 15:53:26,368 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 15:53:26,369 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:53:26,369 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-14 15:53:26,369 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:53:26,369 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 15:53:26,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 15:53:26,457 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:53:26,457 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 15:53:26,458 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 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 15:53:26,467 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-14 15:53:26,467 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-09-14 15:53:26,476 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2018-09-14 15:53:26,477 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-14 15:53:26,479 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 15:53:26,691 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-09-14 15:53:26,691 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 15:53:26,775 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-09-14 15:53:26,795 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-14 15:53:26,796 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [6] total 13 [2018-09-14 15:53:26,796 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 15:53:26,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-14 15:53:26,797 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-14 15:53:26,797 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2018-09-14 15:53:26,798 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 7 states. [2018-09-14 15:53:26,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 15:53:26,887 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-09-14 15:53:26,887 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 15:53:26,887 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2018-09-14 15:53:26,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 15:53:26,888 INFO L225 Difference]: With dead ends: 21 [2018-09-14 15:53:26,888 INFO L226 Difference]: Without dead ends: 0 [2018-09-14 15:53:26,889 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 32 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2018-09-14 15:53:26,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-09-14 15:53:26,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-09-14 15:53:26,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-09-14 15:53:26,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-09-14 15:53:26,890 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2018-09-14 15:53:26,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 15:53:26,891 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-09-14 15:53:26,891 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-14 15:53:26,891 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-09-14 15:53:26,891 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-09-14 15:53:26,896 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-09-14 15:53:26,963 INFO L429 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-09-14 15:53:26,964 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-09-14 15:53:26,964 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-09-14 15:53:26,964 INFO L429 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-09-14 15:53:26,964 INFO L429 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-09-14 15:53:26,964 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-09-14 15:53:26,964 INFO L429 ceAbstractionStarter]: At program point mainENTRY(lines 10 15) the Hoare annotation is: true [2018-09-14 15:53:26,964 INFO L426 ceAbstractionStarter]: For program point mainEXIT(lines 10 15) no Hoare annotation was computed. [2018-09-14 15:53:26,965 INFO L426 ceAbstractionStarter]: For program point L13(line 13) no Hoare annotation was computed. [2018-09-14 15:53:26,965 INFO L426 ceAbstractionStarter]: For program point mainFINAL(lines 10 15) no Hoare annotation was computed. [2018-09-14 15:53:26,965 INFO L426 ceAbstractionStarter]: For program point L12-1(line 12) no Hoare annotation was computed. [2018-09-14 15:53:26,965 INFO L426 ceAbstractionStarter]: For program point L12-3(line 12) no Hoare annotation was computed. [2018-09-14 15:53:26,965 INFO L422 ceAbstractionStarter]: At program point L12-4(line 12) the Hoare annotation is: (<= main_~i~0 1000000) [2018-09-14 15:53:26,965 INFO L422 ceAbstractionStarter]: At program point L12-5(line 12) the Hoare annotation is: (and (<= main_~i~0 1000000) (<= 1000000 main_~i~0)) [2018-09-14 15:53:26,966 INFO L429 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-09-14 15:53:26,966 INFO L426 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-09-14 15:53:26,966 INFO L426 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-09-14 15:53:26,966 INFO L426 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-09-14 15:53:26,966 INFO L426 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-09-14 15:53:26,967 INFO L426 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-09-14 15:53:26,978 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.09 03:53:26 BoogieIcfgContainer [2018-09-14 15:53:26,978 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-14 15:53:26,979 INFO L168 Benchmark]: Toolchain (without parser) took 2682.34 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 709.4 MB). Free memory was 1.4 GB in the beginning and 2.0 GB in the end (delta: -609.3 MB). Peak memory consumption was 100.1 MB. Max. memory is 7.1 GB. [2018-09-14 15:53:26,981 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-14 15:53:26,982 INFO L168 Benchmark]: CACSL2BoogieTranslator took 233.19 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. [2018-09-14 15:53:26,983 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-14 15:53:26,983 INFO L168 Benchmark]: Boogie Preprocessor took 26.68 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-14 15:53:26,984 INFO L168 Benchmark]: RCFGBuilder took 332.48 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 709.4 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -750.6 MB). Peak memory consumption was 26.5 MB. Max. memory is 7.1 GB. [2018-09-14 15:53:26,985 INFO L168 Benchmark]: TraceAbstraction took 2060.20 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 130.8 MB). Peak memory consumption was 130.8 MB. Max. memory is 7.1 GB. [2018-09-14 15:53:26,990 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 233.19 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 Procedure Inliner took 23.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 26.68 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 332.48 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 709.4 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -750.6 MB). Peak memory consumption was 26.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2060.20 ms. Allocated memory is still 2.2 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 130.8 MB). Peak memory consumption was 130.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 12]: Loop Invariant Derived loop invariant: i <= 1000000 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 1 error locations. SAFE Result, 1.9s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 60 SDtfs, 11 SDslu, 84 SDs, 0 SdLazy, 42 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 180 GetRequests, 155 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=4, 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: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 3 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 11 PreInvPairs, 15 NumberOfFragments, 15 HoareAnnotationTreeSize, 11 FomulaSimplifications, 14 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 8 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 154 NumberOfCodeBlocks, 148 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 221 ConstructedInterpolants, 0 QuantifiedInterpolants, 6423 SizeOfPredicates, 6 NumberOfNonLiveVariables, 143 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 15 InterpolantComputations, 4 PerfectInterpolantSequences, 30/90 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/count_by_1_true-unreach-call_true-termination.i_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-14_15-53-27-005.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/count_by_1_true-unreach-call_true-termination.i_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-14_15-53-27-005.csv Received shutdown request...