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-lit/gj2007b_true-unreach-call_true-termination.c.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-dace188-m [2018-09-14 15:52:09,956 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-14 15:52:09,958 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-14 15:52:09,970 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-14 15:52:09,971 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-14 15:52:09,972 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-14 15:52:09,973 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-14 15:52:09,975 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-14 15:52:09,976 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-14 15:52:09,977 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-14 15:52:09,978 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-14 15:52:09,978 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-14 15:52:09,979 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-14 15:52:09,980 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-14 15:52:09,982 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-14 15:52:09,982 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-14 15:52:09,983 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-14 15:52:09,985 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-14 15:52:09,987 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-14 15:52:09,989 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-14 15:52:09,990 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-14 15:52:09,991 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-14 15:52:09,993 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-14 15:52:09,993 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-14 15:52:09,994 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-14 15:52:09,994 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-14 15:52:09,996 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-14 15:52:09,996 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-14 15:52:09,997 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-14 15:52:09,998 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-14 15:52:09,999 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-14 15:52:09,999 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-09-14 15:52:10,002 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 15:52:10,017 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-14 15:52:10,017 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-14 15:52:10,018 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-14 15:52:10,018 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-14 15:52:10,018 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-14 15:52:10,019 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-14 15:52:10,019 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-14 15:52:10,019 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-14 15:52:10,019 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-14 15:52:10,019 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-14 15:52:10,020 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-14 15:52:10,020 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-14 15:52:10,020 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-14 15:52:10,021 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-14 15:52:10,021 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-14 15:52:10,021 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-14 15:52:10,021 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-14 15:52:10,021 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-14 15:52:10,022 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-14 15:52:10,022 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-14 15:52:10,022 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-14 15:52:10,022 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-14 15:52:10,022 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-14 15:52:10,023 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-14 15:52:10,023 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-14 15:52:10,023 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-14 15:52:10,023 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-14 15:52:10,023 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-14 15:52:10,024 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-14 15:52:10,024 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-14 15:52:10,024 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-14 15:52:10,024 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-14 15:52:10,024 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-14 15:52:10,071 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-14 15:52:10,086 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-14 15:52:10,093 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-14 15:52:10,095 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-14 15:52:10,095 INFO L276 PluginConnector]: CDTParser initialized [2018-09-14 15:52:10,096 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gj2007b_true-unreach-call_true-termination.c.i [2018-09-14 15:52:10,487 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24f887653/7652ff3215a64fe688f645d80b3e21e5/FLAG1e93fc38a [2018-09-14 15:52:10,638 INFO L277 CDTParser]: Found 1 translation units. [2018-09-14 15:52:10,639 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gj2007b_true-unreach-call_true-termination.c.i [2018-09-14 15:52:10,645 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24f887653/7652ff3215a64fe688f645d80b3e21e5/FLAG1e93fc38a [2018-09-14 15:52:10,662 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/24f887653/7652ff3215a64fe688f645d80b3e21e5 [2018-09-14 15:52:10,675 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-14 15:52:10,679 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-14 15:52:10,683 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-14 15:52:10,683 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-14 15:52:10,692 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-14 15:52:10,693 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 03:52:10" (1/1) ... [2018-09-14 15:52:10,697 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d56e01f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 03:52:10, skipping insertion in model container [2018-09-14 15:52:10,697 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.09 03:52:10" (1/1) ... [2018-09-14 15:52:10,709 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-14 15:52:10,903 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 15:52:10,920 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-14 15:52:10,925 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-14 15:52:10,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 03:52:10 WrapperNode [2018-09-14 15:52:10,940 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-14 15:52:10,941 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-14 15:52:10,941 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-14 15:52:10,941 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-14 15:52:10,951 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 03:52:10" (1/1) ... [2018-09-14 15:52:10,957 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 03:52:10" (1/1) ... [2018-09-14 15:52:10,964 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-14 15:52:10,964 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-14 15:52:10,964 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-14 15:52:10,965 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-14 15:52:10,975 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 03:52:10" (1/1) ... [2018-09-14 15:52:10,976 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 03:52:10" (1/1) ... [2018-09-14 15:52:10,976 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 03:52:10" (1/1) ... [2018-09-14 15:52:10,977 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 03:52:10" (1/1) ... [2018-09-14 15:52:10,982 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 03:52:10" (1/1) ... [2018-09-14 15:52:10,989 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 03:52:10" (1/1) ... [2018-09-14 15:52:10,990 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 03:52:10" (1/1) ... [2018-09-14 15:52:10,992 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-14 15:52:10,992 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-14 15:52:10,993 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-14 15:52:10,993 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-14 15:52:10,994 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 03:52:10" (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 15:52:11,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-14 15:52:11,065 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-14 15:52:11,065 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-14 15:52:11,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-14 15:52:11,066 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-14 15:52:11,066 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-14 15:52:11,067 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-09-14 15:52:11,067 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-09-14 15:52:11,524 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-14 15:52:11,525 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 03:52:11 BoogieIcfgContainer [2018-09-14 15:52:11,525 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-14 15:52:11,533 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-14 15:52:11,534 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-14 15:52:11,545 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-14 15:52:11,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.09 03:52:10" (1/3) ... [2018-09-14 15:52:11,547 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@394e26de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 03:52:11, skipping insertion in model container [2018-09-14 15:52:11,547 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.09 03:52:10" (2/3) ... [2018-09-14 15:52:11,547 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@394e26de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.09 03:52:11, skipping insertion in model container [2018-09-14 15:52:11,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.09 03:52:11" (3/3) ... [2018-09-14 15:52:11,554 INFO L112 eAbstractionObserver]: Analyzing ICFG gj2007b_true-unreach-call_true-termination.c.i [2018-09-14 15:52:11,582 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-14 15:52:11,598 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-14 15:52:11,656 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-14 15:52:11,657 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-14 15:52:11,657 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-14 15:52:11,657 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-14 15:52:11,657 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-14 15:52:11,658 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-14 15:52:11,658 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-14 15:52:11,658 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-14 15:52:11,658 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-14 15:52:11,677 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2018-09-14 15:52:11,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-09-14 15:52:11,683 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 15:52:11,684 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 15:52:11,685 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 15:52:11,691 INFO L82 PathProgramCache]: Analyzing trace with hash 425736256, now seen corresponding path program 1 times [2018-09-14 15:52:11,694 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 15:52:11,750 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:52:11,751 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 15:52:11,751 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:52:11,751 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 15:52:11,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 15:52:11,811 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 15:52:11,813 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 15:52:11,814 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-14 15:52:11,814 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 15:52:11,818 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-14 15:52:11,830 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-14 15:52:11,830 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-14 15:52:11,833 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 2 states. [2018-09-14 15:52:11,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 15:52:11,855 INFO L93 Difference]: Finished difference Result 35 states and 42 transitions. [2018-09-14 15:52:11,856 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-14 15:52:11,857 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-09-14 15:52:11,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 15:52:11,868 INFO L225 Difference]: With dead ends: 35 [2018-09-14 15:52:11,868 INFO L226 Difference]: Without dead ends: 17 [2018-09-14 15:52:11,872 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 15:52:11,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-09-14 15:52:11,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-09-14 15:52:11,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-09-14 15:52:11,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2018-09-14 15:52:11,915 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 10 [2018-09-14 15:52:11,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 15:52:11,915 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2018-09-14 15:52:11,916 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-14 15:52:11,916 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2018-09-14 15:52:11,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-09-14 15:52:11,917 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 15:52:11,917 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 15:52:11,917 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 15:52:11,918 INFO L82 PathProgramCache]: Analyzing trace with hash -145623935, now seen corresponding path program 1 times [2018-09-14 15:52:11,918 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 15:52:11,919 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:52:11,919 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 15:52:11,920 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:52:11,920 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 15:52:11,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 15:52:12,046 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 15:52:12,046 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-14 15:52:12,046 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-14 15:52:12,046 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 15:52:12,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-14 15:52:12,049 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-14 15:52:12,049 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-14 15:52:12,049 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand 5 states. [2018-09-14 15:52:12,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 15:52:12,181 INFO L93 Difference]: Finished difference Result 29 states and 33 transitions. [2018-09-14 15:52:12,182 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-14 15:52:12,182 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2018-09-14 15:52:12,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 15:52:12,184 INFO L225 Difference]: With dead ends: 29 [2018-09-14 15:52:12,184 INFO L226 Difference]: Without dead ends: 27 [2018-09-14 15:52:12,185 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-09-14 15:52:12,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2018-09-14 15:52:12,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2018-09-14 15:52:12,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-09-14 15:52:12,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2018-09-14 15:52:12,195 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 11 [2018-09-14 15:52:12,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 15:52:12,195 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2018-09-14 15:52:12,196 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-14 15:52:12,196 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2018-09-14 15:52:12,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-09-14 15:52:12,197 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 15:52:12,197 INFO L376 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 15:52:12,197 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 15:52:12,198 INFO L82 PathProgramCache]: Analyzing trace with hash 1098814237, now seen corresponding path program 1 times [2018-09-14 15:52:12,198 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 15:52:12,199 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:52:12,199 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 15:52:12,199 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:52:12,200 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 15:52:12,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 15:52:12,351 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:52:12,351 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 15:52:12,351 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 15:52:12,364 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 15:52:12,364 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 15:52:12,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 15:52:12,406 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 15:52:12,863 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:52:12,864 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 15:52:12,915 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:52:12,935 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-14 15:52:12,936 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [7] total 11 [2018-09-14 15:52:12,936 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 15:52:12,936 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 15:52:12,936 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 15:52:12,937 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2018-09-14 15:52:12,937 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 6 states. [2018-09-14 15:52:13,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 15:52:13,128 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2018-09-14 15:52:13,130 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-14 15:52:13,130 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2018-09-14 15:52:13,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 15:52:13,133 INFO L225 Difference]: With dead ends: 43 [2018-09-14 15:52:13,133 INFO L226 Difference]: Without dead ends: 31 [2018-09-14 15:52:13,134 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2018-09-14 15:52:13,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2018-09-14 15:52:13,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 28. [2018-09-14 15:52:13,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-09-14 15:52:13,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2018-09-14 15:52:13,141 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 16 [2018-09-14 15:52:13,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 15:52:13,141 INFO L480 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2018-09-14 15:52:13,141 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 15:52:13,142 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2018-09-14 15:52:13,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-09-14 15:52:13,142 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 15:52:13,143 INFO L376 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 15:52:13,143 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 15:52:13,143 INFO L82 PathProgramCache]: Analyzing trace with hash -1093455445, now seen corresponding path program 1 times [2018-09-14 15:52:13,143 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 15:52:13,145 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:52:13,145 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 15:52:13,145 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:52:13,145 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 15:52:13,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 15:52:13,224 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 15:52:13,224 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 15:52:13,224 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 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 15:52:13,234 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 15:52:13,235 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 15:52:13,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 15:52:13,245 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 15:52:13,268 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 15:52:13,268 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 15:52:13,377 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 15:52:13,397 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 15:52:13,398 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 4 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 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-14 15:52:13,415 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 15:52:13,415 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 15:52:13,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 15:52:13,433 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 15:52:13,548 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 15:52:13,548 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 15:52:13,557 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 15:52:13,561 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-14 15:52:13,561 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6] total 10 [2018-09-14 15:52:13,561 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-14 15:52:13,562 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 15:52:13,562 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 15:52:13,562 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2018-09-14 15:52:13,563 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 6 states. [2018-09-14 15:52:13,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 15:52:13,929 INFO L93 Difference]: Finished difference Result 34 states and 37 transitions. [2018-09-14 15:52:13,930 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-14 15:52:13,930 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2018-09-14 15:52:13,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 15:52:13,931 INFO L225 Difference]: With dead ends: 34 [2018-09-14 15:52:13,931 INFO L226 Difference]: Without dead ends: 30 [2018-09-14 15:52:13,932 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 53 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2018-09-14 15:52:13,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2018-09-14 15:52:13,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 21. [2018-09-14 15:52:13,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2018-09-14 15:52:13,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2018-09-14 15:52:13,938 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 15 [2018-09-14 15:52:13,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 15:52:13,938 INFO L480 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2018-09-14 15:52:13,938 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 15:52:13,938 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2018-09-14 15:52:13,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-09-14 15:52:13,939 INFO L368 BasicCegarLoop]: Found error trace [2018-09-14 15:52:13,940 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-14 15:52:13,940 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-14 15:52:13,940 INFO L82 PathProgramCache]: Analyzing trace with hash 1642528819, now seen corresponding path program 1 times [2018-09-14 15:52:13,940 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-14 15:52:13,941 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:52:13,941 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 15:52:13,942 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-14 15:52:13,942 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-14 15:52:13,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 15:52:14,104 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:52:14,105 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-14 15:52:14,105 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 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-14 15:52:14,121 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-14 15:52:14,121 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-14 15:52:14,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-14 15:52:14,135 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-14 15:52:14,268 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:52:14,268 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-14 15:52:14,503 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-14 15:52:14,525 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-14 15:52:14,525 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [9, 9] total 15 [2018-09-14 15:52:14,525 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-14 15:52:14,525 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-14 15:52:14,526 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-14 15:52:14,526 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2018-09-14 15:52:14,526 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 6 states. [2018-09-14 15:52:14,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-14 15:52:14,643 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2018-09-14 15:52:14,643 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-14 15:52:14,643 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2018-09-14 15:52:14,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-14 15:52:14,643 INFO L225 Difference]: With dead ends: 21 [2018-09-14 15:52:14,643 INFO L226 Difference]: Without dead ends: 0 [2018-09-14 15:52:14,644 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 33 SyntacticMatches, 4 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2018-09-14 15:52:14,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-09-14 15:52:14,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-09-14 15:52:14,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-09-14 15:52:14,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-09-14 15:52:14,645 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2018-09-14 15:52:14,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-14 15:52:14,645 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-09-14 15:52:14,645 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-14 15:52:14,646 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-09-14 15:52:14,646 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-09-14 15:52:14,650 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-09-14 15:52:14,848 INFO L429 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-09-14 15:52:14,849 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-09-14 15:52:14,849 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-09-14 15:52:14,849 INFO L429 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-09-14 15:52:14,849 INFO L429 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-09-14 15:52:14,849 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-09-14 15:52:14,849 INFO L429 ceAbstractionStarter]: At program point mainENTRY(lines 10 23) the Hoare annotation is: true [2018-09-14 15:52:14,850 INFO L426 ceAbstractionStarter]: For program point mainEXIT(lines 10 23) no Hoare annotation was computed. [2018-09-14 15:52:14,850 INFO L426 ceAbstractionStarter]: For program point L21(line 21) no Hoare annotation was computed. [2018-09-14 15:52:14,850 INFO L422 ceAbstractionStarter]: At program point L20(line 20) the Hoare annotation is: (let ((.cse0 (<= main_~n~0 0))) (or (and (<= 0 main_~m~0) (or .cse0 (< main_~m~0 main_~n~0)) (<= 0 main_~x~0)) (and .cse0 (<= main_~x~0 0)))) [2018-09-14 15:52:14,850 INFO L426 ceAbstractionStarter]: For program point L15(lines 15 17) no Hoare annotation was computed. [2018-09-14 15:52:14,850 INFO L426 ceAbstractionStarter]: For program point L14-1(lines 14 19) no Hoare annotation was computed. [2018-09-14 15:52:14,851 INFO L426 ceAbstractionStarter]: For program point L15-2(lines 15 17) no Hoare annotation was computed. [2018-09-14 15:52:14,851 INFO L426 ceAbstractionStarter]: For program point mainFINAL(lines 10 23) no Hoare annotation was computed. [2018-09-14 15:52:14,851 INFO L422 ceAbstractionStarter]: At program point L14-3(lines 14 19) the Hoare annotation is: (and (<= 0 main_~m~0) (or (<= main_~n~0 0) (< main_~m~0 main_~n~0)) (<= 0 main_~x~0)) [2018-09-14 15:52:14,851 INFO L422 ceAbstractionStarter]: At program point L14-4(lines 14 19) the Hoare annotation is: (let ((.cse0 (<= 0 main_~m~0))) (or (and (<= main_~n~0 0) .cse0) (and .cse0 (< main_~m~0 main_~n~0) (<= 0 main_~x~0)))) [2018-09-14 15:52:14,851 INFO L429 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-09-14 15:52:14,852 INFO L426 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-09-14 15:52:14,852 INFO L426 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-09-14 15:52:14,852 INFO L426 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-09-14 15:52:14,852 INFO L426 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-09-14 15:52:14,852 INFO L426 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-09-14 15:52:14,865 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.09 03:52:14 BoogieIcfgContainer [2018-09-14 15:52:14,865 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-14 15:52:14,866 INFO L168 Benchmark]: Toolchain (without parser) took 4190.26 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 715.7 MB). Free memory was 1.4 GB in the beginning and 2.0 GB in the end (delta: -578.0 MB). Peak memory consumption was 137.7 MB. Max. memory is 7.1 GB. [2018-09-14 15:52:14,868 INFO L168 Benchmark]: CDTParser took 0.21 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 15:52:14,869 INFO L168 Benchmark]: CACSL2BoogieTranslator took 257.37 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 15:52:14,870 INFO L168 Benchmark]: Boogie Procedure Inliner took 23.21 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 15:52:14,870 INFO L168 Benchmark]: Boogie Preprocessor took 27.62 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 15:52:14,871 INFO L168 Benchmark]: RCFGBuilder took 533.25 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 715.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -766.8 MB). Peak memory consumption was 26.5 MB. Max. memory is 7.1 GB. [2018-09-14 15:52:14,872 INFO L168 Benchmark]: TraceAbstraction took 3332.08 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 174.8 MB). Peak memory consumption was 174.8 MB. Max. memory is 7.1 GB. [2018-09-14 15:52:14,877 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 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 257.37 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 23.21 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. * Boogie Preprocessor took 27.62 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 533.25 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 715.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -766.8 MB). Peak memory consumption was 26.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3332.08 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 174.8 MB). Peak memory consumption was 174.8 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: 14]: Loop Invariant Derived loop invariant: (0 <= m && (n <= 0 || m < n)) && 0 <= x - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 22 locations, 1 error locations. SAFE Result, 3.2s OverallTime, 5 OverallIterations, 2 TraceHistogramMax, 0.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 80 SDtfs, 33 SDslu, 176 SDs, 0 SdLazy, 97 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 167 GetRequests, 118 SyntacticMatches, 9 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=28occurred in iteration=3, 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, 13 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 13 PreInvPairs, 18 NumberOfFragments, 59 HoareAnnotationTreeSize, 13 FomulaSimplifications, 33 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 24 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 138 NumberOfCodeBlocks, 138 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 191 ConstructedInterpolants, 0 QuantifiedInterpolants, 8259 SizeOfPredicates, 17 NumberOfNonLiveVariables, 161 ConjunctsInSsa, 41 ConjunctsInUnsatCore, 13 InterpolantComputations, 5 PerfectInterpolantSequences, 11/28 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/gj2007b_true-unreach-call_true-termination.c.i_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-14_15-52-14-896.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/gj2007b_true-unreach-call_true-termination.c.i_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-14_15-52-14-896.csv Received shutdown request...