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/cggmp2005_true-unreach-call_true-termination.c.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-69f5bdd-m [2018-09-18 10:01:59,050 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-18 10:01:59,052 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-18 10:01:59,065 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-18 10:01:59,066 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-18 10:01:59,067 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-18 10:01:59,068 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-18 10:01:59,070 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-18 10:01:59,071 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-18 10:01:59,072 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-18 10:01:59,073 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-18 10:01:59,073 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-18 10:01:59,074 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-18 10:01:59,075 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-18 10:01:59,076 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-18 10:01:59,077 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-18 10:01:59,078 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-18 10:01:59,079 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-18 10:01:59,081 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-18 10:01:59,083 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-18 10:01:59,084 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-18 10:01:59,085 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-18 10:01:59,088 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-18 10:01:59,088 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-18 10:01:59,088 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-18 10:01:59,089 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-18 10:01:59,090 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-18 10:01:59,091 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-18 10:01:59,092 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-18 10:01:59,093 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-18 10:01:59,093 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-18 10:01:59,094 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-09-18 10:01:59,096 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 [2018-09-18 10:01:59,111 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-18 10:01:59,112 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-18 10:01:59,113 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-18 10:01:59,113 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-18 10:01:59,113 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-18 10:01:59,113 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-18 10:01:59,113 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-18 10:01:59,114 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-18 10:01:59,114 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-18 10:01:59,114 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-18 10:01:59,114 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-09-18 10:01:59,114 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-18 10:01:59,115 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-18 10:01:59,115 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-18 10:01:59,115 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-18 10:01:59,116 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-18 10:01:59,116 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-18 10:01:59,116 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-18 10:01:59,116 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-18 10:01:59,116 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-18 10:01:59,117 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-18 10:01:59,117 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-18 10:01:59,117 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-18 10:01:59,117 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-18 10:01:59,117 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-18 10:01:59,118 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-18 10:01:59,118 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-18 10:01:59,118 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-18 10:01:59,118 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-18 10:01:59,118 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-18 10:01:59,118 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-18 10:01:59,119 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-18 10:01:59,119 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-18 10:01:59,119 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-18 10:01:59,169 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-18 10:01:59,186 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-18 10:01:59,192 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-18 10:01:59,193 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-18 10:01:59,194 INFO L276 PluginConnector]: CDTParser initialized [2018-09-18 10:01:59,195 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/cggmp2005_true-unreach-call_true-termination.c.i [2018-09-18 10:01:59,590 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b222bfe8b/62ec60cb3e534be4b1c1f75138123f13/FLAG2339aa122 [2018-09-18 10:01:59,772 INFO L277 CDTParser]: Found 1 translation units. [2018-09-18 10:01:59,773 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/cggmp2005_true-unreach-call_true-termination.c.i [2018-09-18 10:01:59,780 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b222bfe8b/62ec60cb3e534be4b1c1f75138123f13/FLAG2339aa122 [2018-09-18 10:01:59,801 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b222bfe8b/62ec60cb3e534be4b1c1f75138123f13 [2018-09-18 10:01:59,812 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-18 10:01:59,816 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-18 10:01:59,817 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-18 10:01:59,817 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-18 10:01:59,825 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-18 10:01:59,827 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 10:01:59" (1/1) ... [2018-09-18 10:01:59,830 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@322340bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:01:59, skipping insertion in model container [2018-09-18 10:01:59,830 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 10:01:59" (1/1) ... [2018-09-18 10:01:59,843 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-18 10:02:00,090 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 10:02:00,112 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-18 10:02:00,116 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 10:02:00,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:02:00 WrapperNode [2018-09-18 10:02:00,131 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-18 10:02:00,132 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-18 10:02:00,132 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-18 10:02:00,132 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-18 10:02:00,143 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:02:00" (1/1) ... [2018-09-18 10:02:00,149 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:02:00" (1/1) ... [2018-09-18 10:02:00,156 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-18 10:02:00,157 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-18 10:02:00,157 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-18 10:02:00,157 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-18 10:02:00,168 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:02:00" (1/1) ... [2018-09-18 10:02:00,169 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:02:00" (1/1) ... [2018-09-18 10:02:00,169 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:02:00" (1/1) ... [2018-09-18 10:02:00,170 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:02:00" (1/1) ... [2018-09-18 10:02:00,171 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:02:00" (1/1) ... [2018-09-18 10:02:00,177 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:02:00" (1/1) ... [2018-09-18 10:02:00,178 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:02:00" (1/1) ... [2018-09-18 10:02:00,181 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-18 10:02:00,181 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-18 10:02:00,181 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-18 10:02:00,182 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-18 10:02:00,184 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:02:00" (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 [2018-09-18 10:02:00,253 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-18 10:02:00,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-18 10:02:00,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-18 10:02:00,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-18 10:02:00,254 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-18 10:02:00,254 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-18 10:02:00,254 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-09-18 10:02:00,254 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-09-18 10:02:00,522 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-18 10:02:00,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 10:02:00 BoogieIcfgContainer [2018-09-18 10:02:00,523 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-18 10:02:00,524 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-18 10:02:00,525 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-18 10:02:00,528 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-18 10:02:00,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.09 10:01:59" (1/3) ... [2018-09-18 10:02:00,529 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68537c4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 10:02:00, skipping insertion in model container [2018-09-18 10:02:00,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 10:02:00" (2/3) ... [2018-09-18 10:02:00,530 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68537c4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 10:02:00, skipping insertion in model container [2018-09-18 10:02:00,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 10:02:00" (3/3) ... [2018-09-18 10:02:00,532 INFO L112 eAbstractionObserver]: Analyzing ICFG cggmp2005_true-unreach-call_true-termination.c.i [2018-09-18 10:02:00,541 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-18 10:02:00,549 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-18 10:02:00,601 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-18 10:02:00,602 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-18 10:02:00,602 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-18 10:02:00,602 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-18 10:02:00,602 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-18 10:02:00,602 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-18 10:02:00,603 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-18 10:02:00,603 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-18 10:02:00,603 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-18 10:02:00,622 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2018-09-18 10:02:00,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-09-18 10:02:00,629 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:02:00,630 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 10:02:00,631 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:02:00,637 INFO L82 PathProgramCache]: Analyzing trace with hash -1871509567, now seen corresponding path program 1 times [2018-09-18 10:02:00,640 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:02:00,696 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:02:00,697 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:02:00,697 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:02:00,697 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:02:00,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:02:00,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:02:00,769 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 10:02:00,769 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-18 10:02:00,770 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 10:02:00,775 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-18 10:02:00,789 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-18 10:02:00,789 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-18 10:02:00,792 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2018-09-18 10:02:00,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:02:00,811 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2018-09-18 10:02:00,811 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-18 10:02:00,813 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-09-18 10:02:00,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:02:00,822 INFO L225 Difference]: With dead ends: 31 [2018-09-18 10:02:00,822 INFO L226 Difference]: Without dead ends: 12 [2018-09-18 10:02:00,826 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 [2018-09-18 10:02:00,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-09-18 10:02:00,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-09-18 10:02:00,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-09-18 10:02:00,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-09-18 10:02:00,864 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-09-18 10:02:00,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:02:00,865 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-09-18 10:02:00,865 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-18 10:02:00,866 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-09-18 10:02:00,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-09-18 10:02:00,866 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:02:00,867 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 10:02:00,867 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:02:00,868 INFO L82 PathProgramCache]: Analyzing trace with hash 1861991801, now seen corresponding path program 1 times [2018-09-18 10:02:00,868 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:02:00,869 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:02:00,870 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:02:00,870 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:02:00,870 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:02:00,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:02:00,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:02:00,969 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 10:02:00,969 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-18 10:02:00,969 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 10:02:00,971 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 10:02:00,971 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 10:02:00,971 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 10:02:00,972 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 3 states. [2018-09-18 10:02:01,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:02:01,034 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-09-18 10:02:01,035 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 10:02:01,035 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-09-18 10:02:01,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:02:01,036 INFO L225 Difference]: With dead ends: 19 [2018-09-18 10:02:01,037 INFO L226 Difference]: Without dead ends: 14 [2018-09-18 10:02:01,038 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 [2018-09-18 10:02:01,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-09-18 10:02:01,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-09-18 10:02:01,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-09-18 10:02:01,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-09-18 10:02:01,051 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 11 [2018-09-18 10:02:01,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:02:01,051 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-09-18 10:02:01,051 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 10:02:01,051 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-09-18 10:02:01,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-09-18 10:02:01,052 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:02:01,052 INFO L376 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 10:02:01,053 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:02:01,053 INFO L82 PathProgramCache]: Analyzing trace with hash -661808769, now seen corresponding path program 1 times [2018-09-18 10:02:01,053 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:02:01,054 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:02:01,054 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:02:01,055 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:02:01,055 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:02:01,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:02:01,200 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:02:01,200 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:02:01,201 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 [2018-09-18 10:02:01,220 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:02:01,220 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:02:01,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:02:01,270 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:02:01,370 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:02:01,371 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:02:01,457 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:02:01,480 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:02:01,480 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 [2018-09-18 10:02:01,499 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:02:01,499 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 10:02:01,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:02:01,521 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:02:01,527 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:02:01,528 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:02:01,552 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:02:01,554 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 10:02:01,554 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4, 4] total 8 [2018-09-18 10:02:01,555 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 10:02:01,555 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 10:02:01,555 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 10:02:01,556 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2018-09-18 10:02:01,556 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 6 states. [2018-09-18 10:02:01,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:02:01,599 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-09-18 10:02:01,599 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-18 10:02:01,600 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2018-09-18 10:02:01,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:02:01,601 INFO L225 Difference]: With dead ends: 21 [2018-09-18 10:02:01,601 INFO L226 Difference]: Without dead ends: 16 [2018-09-18 10:02:01,601 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2018-09-18 10:02:01,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-09-18 10:02:01,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-09-18 10:02:01,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-09-18 10:02:01,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-09-18 10:02:01,606 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 13 [2018-09-18 10:02:01,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:02:01,607 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2018-09-18 10:02:01,607 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 10:02:01,607 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2018-09-18 10:02:01,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-09-18 10:02:01,608 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:02:01,608 INFO L376 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 10:02:01,608 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:02:01,608 INFO L82 PathProgramCache]: Analyzing trace with hash 622365701, now seen corresponding path program 2 times [2018-09-18 10:02:01,609 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:02:01,609 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:02:01,610 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 10:02:01,610 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:02:01,610 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:02:01,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:02:01,792 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:02:01,792 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:02:01,792 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 [2018-09-18 10:02:01,812 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-18 10:02:01,812 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-09-18 10:02:01,832 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-18 10:02:01,833 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-18 10:02:01,835 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:02:01,924 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:02:01,924 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:02:01,998 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:02:02,018 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:02:02,019 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 [2018-09-18 10:02:02,038 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-18 10:02:02,038 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-09-18 10:02:02,057 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-18 10:02:02,058 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-18 10:02:02,062 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:02:02,070 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:02:02,070 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:02:02,214 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:02:02,216 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 10:02:02,217 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5] total 9 [2018-09-18 10:02:02,217 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 10:02:02,217 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-09-18 10:02:02,217 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-09-18 10:02:02,218 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2018-09-18 10:02:02,218 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 8 states. [2018-09-18 10:02:02,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:02:02,265 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2018-09-18 10:02:02,266 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-18 10:02:02,266 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2018-09-18 10:02:02,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:02:02,267 INFO L225 Difference]: With dead ends: 23 [2018-09-18 10:02:02,267 INFO L226 Difference]: Without dead ends: 18 [2018-09-18 10:02:02,268 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 52 SyntacticMatches, 4 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2018-09-18 10:02:02,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-09-18 10:02:02,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-09-18 10:02:02,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-09-18 10:02:02,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-09-18 10:02:02,274 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 15 [2018-09-18 10:02:02,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:02:02,274 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2018-09-18 10:02:02,274 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-09-18 10:02:02,274 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2018-09-18 10:02:02,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-09-18 10:02:02,275 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:02:02,275 INFO L376 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 10:02:02,276 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:02:02,276 INFO L82 PathProgramCache]: Analyzing trace with hash 2058417419, now seen corresponding path program 3 times [2018-09-18 10:02:02,276 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:02:02,277 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:02:02,277 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-18 10:02:02,277 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:02:02,277 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:02:02,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:02:02,372 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:02:02,372 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:02:02,372 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 [2018-09-18 10:02:02,380 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-18 10:02:02,381 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-09-18 10:02:02,395 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-09-18 10:02:02,395 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-18 10:02:02,398 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:02:02,637 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:02:02,637 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:02:02,700 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:02:02,721 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:02:02,721 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 7 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 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 10:02:02,737 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-18 10:02:02,737 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-09-18 10:02:02,764 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-09-18 10:02:02,764 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-18 10:02:02,767 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:02:02,775 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:02:02,776 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:02:02,815 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:02:02,822 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 10:02:02,822 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6] total 10 [2018-09-18 10:02:02,822 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 10:02:02,823 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-09-18 10:02:02,823 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-09-18 10:02:02,824 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2018-09-18 10:02:02,824 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 10 states. [2018-09-18 10:02:02,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:02:02,856 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2018-09-18 10:02:02,857 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-18 10:02:02,857 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 17 [2018-09-18 10:02:02,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:02:02,858 INFO L225 Difference]: With dead ends: 25 [2018-09-18 10:02:02,858 INFO L226 Difference]: Without dead ends: 20 [2018-09-18 10:02:02,858 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 58 SyntacticMatches, 6 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2018-09-18 10:02:02,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2018-09-18 10:02:02,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2018-09-18 10:02:02,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2018-09-18 10:02:02,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2018-09-18 10:02:02,863 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 17 [2018-09-18 10:02:02,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:02:02,863 INFO L480 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2018-09-18 10:02:02,863 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-09-18 10:02:02,864 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2018-09-18 10:02:02,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-09-18 10:02:02,864 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:02:02,865 INFO L376 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 10:02:02,865 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:02:02,865 INFO L82 PathProgramCache]: Analyzing trace with hash -875350895, now seen corresponding path program 4 times [2018-09-18 10:02:02,865 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:02:02,866 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:02:02,866 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-18 10:02:02,867 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:02:02,867 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:02:02,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:02:03,366 WARN L178 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-09-18 10:02:03,402 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:02:03,403 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:02:03,403 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 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 10:02:03,411 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-18 10:02:03,411 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-09-18 10:02:03,430 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-18 10:02:03,431 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-18 10:02:03,433 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:02:03,495 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:02:03,495 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:02:03,567 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:02:03,589 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 10:02:03,589 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 9 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 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 10:02:03,605 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-09-18 10:02:03,605 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder TERMS_WITH_SMALL_CONSTANTS_FIRST (IT: FPandBP) [2018-09-18 10:02:03,621 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-09-18 10:02:03,622 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-18 10:02:03,625 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 10:02:03,666 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:02:03,666 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 10:02:03,713 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:02:03,715 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 10:02:03,715 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9, 9] total 11 [2018-09-18 10:02:03,715 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 10:02:03,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 10:02:03,716 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 10:02:03,716 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2018-09-18 10:02:03,716 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 9 states. [2018-09-18 10:02:03,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:02:03,819 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2018-09-18 10:02:03,820 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-18 10:02:03,821 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 19 [2018-09-18 10:02:03,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:02:03,822 INFO L225 Difference]: With dead ends: 27 [2018-09-18 10:02:03,822 INFO L226 Difference]: Without dead ends: 22 [2018-09-18 10:02:03,823 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 68 SyntacticMatches, 6 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2018-09-18 10:02:03,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2018-09-18 10:02:03,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2018-09-18 10:02:03,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2018-09-18 10:02:03,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2018-09-18 10:02:03,827 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 19 [2018-09-18 10:02:03,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:02:03,828 INFO L480 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2018-09-18 10:02:03,828 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-18 10:02:03,828 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2018-09-18 10:02:03,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-09-18 10:02:03,828 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 10:02:03,828 INFO L376 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 10:02:03,829 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 10:02:03,829 INFO L82 PathProgramCache]: Analyzing trace with hash 1566812823, now seen corresponding path program 5 times [2018-09-18 10:02:03,829 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 10:02:03,830 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:02:03,830 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-18 10:02:03,830 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 10:02:03,830 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 10:02:03,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 10:02:03,910 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 10:02:03,910 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 10:02:03,910 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-09-18 10:02:03,911 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 10:02:03,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-09-18 10:02:03,911 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-09-18 10:02:03,912 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-09-18 10:02:03,912 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 7 states. [2018-09-18 10:02:03,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 10:02:03,930 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2018-09-18 10:02:03,931 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 10:02:03,931 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2018-09-18 10:02:03,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 10:02:03,931 INFO L225 Difference]: With dead ends: 22 [2018-09-18 10:02:03,931 INFO L226 Difference]: Without dead ends: 0 [2018-09-18 10:02:03,932 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2018-09-18 10:02:03,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-09-18 10:02:03,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-09-18 10:02:03,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-09-18 10:02:03,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-09-18 10:02:03,933 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2018-09-18 10:02:03,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 10:02:03,933 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-09-18 10:02:03,933 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-09-18 10:02:03,933 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-09-18 10:02:03,933 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-09-18 10:02:03,938 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-09-18 10:02:04,156 WARN L178 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 35 [2018-09-18 10:02:04,166 INFO L429 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-09-18 10:02:04,166 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-09-18 10:02:04,166 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-09-18 10:02:04,166 INFO L429 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-09-18 10:02:04,167 INFO L429 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-09-18 10:02:04,167 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-09-18 10:02:04,167 INFO L429 ceAbstractionStarter]: At program point mainENTRY(lines 10 20) the Hoare annotation is: true [2018-09-18 10:02:04,167 INFO L426 ceAbstractionStarter]: For program point mainEXIT(lines 10 20) no Hoare annotation was computed. [2018-09-18 10:02:04,167 INFO L426 ceAbstractionStarter]: For program point L18(line 18) no Hoare annotation was computed. [2018-09-18 10:02:04,167 INFO L426 ceAbstractionStarter]: For program point L14-1(lines 14 17) no Hoare annotation was computed. [2018-09-18 10:02:04,167 INFO L426 ceAbstractionStarter]: For program point mainFINAL(lines 10 20) no Hoare annotation was computed. [2018-09-18 10:02:04,168 INFO L422 ceAbstractionStarter]: At program point L14-3(lines 14 17) the Hoare annotation is: (or (and (<= 8 main_~j~0) (<= main_~j~0 (+ main_~i~0 3)) (<= main_~i~0 5)) (and (<= 6 main_~j~0) (<= (+ main_~j~0 3) main_~i~0) (<= main_~j~0 6)) (and (<= main_~j~0 (+ main_~i~0 9)) (<= main_~i~0 1) (<= 10 main_~j~0)) (and (<= 7 main_~j~0) (<= main_~j~0 main_~i~0) (<= main_~i~0 7)) (and (<= main_~i~0 3) (<= main_~j~0 (+ main_~i~0 6)) (<= 9 main_~j~0))) [2018-09-18 10:02:04,168 INFO L422 ceAbstractionStarter]: At program point L14-4(lines 14 17) the Hoare annotation is: (and (<= 6 main_~j~0) (<= main_~j~0 6)) [2018-09-18 10:02:04,168 INFO L426 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-09-18 10:02:04,168 INFO L429 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2018-09-18 10:02:04,169 INFO L426 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2018-09-18 10:02:04,169 INFO L426 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-09-18 10:02:04,169 INFO L426 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-09-18 10:02:04,169 INFO L426 ceAbstractionStarter]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2018-09-18 10:02:04,183 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.09 10:02:04 BoogieIcfgContainer [2018-09-18 10:02:04,183 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-18 10:02:04,184 INFO L168 Benchmark]: Toolchain (without parser) took 4371.19 ms. Allocated memory was 1.6 GB in the beginning and 2.3 GB in the end (delta: 760.7 MB). Free memory was 1.4 GB in the beginning and 2.0 GB in the end (delta: -580.3 MB). Peak memory consumption was 180.5 MB. Max. memory is 7.1 GB. [2018-09-18 10:02:04,186 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-18 10:02:04,186 INFO L168 Benchmark]: CACSL2BoogieTranslator took 314.27 ms. Allocated memory is still 1.6 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. [2018-09-18 10:02:04,187 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.37 ms. Allocated memory is still 1.6 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-18 10:02:04,188 INFO L168 Benchmark]: Boogie Preprocessor took 24.23 ms. Allocated memory is still 1.6 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-18 10:02:04,188 INFO L168 Benchmark]: RCFGBuilder took 342.09 ms. Allocated memory was 1.6 GB in the beginning and 2.3 GB in the end (delta: 760.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -814.4 MB). Peak memory consumption was 26.5 MB. Max. memory is 7.1 GB. [2018-09-18 10:02:04,189 INFO L168 Benchmark]: TraceAbstraction took 3659.09 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 223.5 MB). Peak memory consumption was 223.5 MB. Max. memory is 7.1 GB. [2018-09-18 10:02:04,194 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.6 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 314.27 ms. Allocated memory is still 1.6 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 24.37 ms. Allocated memory is still 1.6 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * Boogie Preprocessor took 24.23 ms. Allocated memory is still 1.6 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 342.09 ms. Allocated memory was 1.6 GB in the beginning and 2.3 GB in the end (delta: 760.7 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -814.4 MB). Peak memory consumption was 26.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3659.09 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 223.5 MB). Peak memory consumption was 223.5 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: (((((8 <= j && j <= i + 3) && i <= 5) || ((6 <= j && j + 3 <= i) && j <= 6)) || ((j <= i + 9 && i <= 1) && 10 <= j)) || ((7 <= j && j <= i) && i <= 7)) || ((i <= 3 && j <= i + 6) && 9 <= j) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 locations, 1 error locations. SAFE Result, 3.5s OverallTime, 7 OverallIterations, 6 TraceHistogramMax, 0.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.2s HoareAnnotationTime, HoareTripleCheckerStatistics: 86 SDtfs, 1 SDslu, 206 SDs, 0 SdLazy, 98 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 285 GetRequests, 232 SyntacticMatches, 16 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 1.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=6, 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, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 13 PreInvPairs, 19 NumberOfFragments, 71 HoareAnnotationTreeSize, 13 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 17 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 234 NumberOfCodeBlocks, 234 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 339 ConstructedInterpolants, 0 QuantifiedInterpolants, 18193 SizeOfPredicates, 16 NumberOfNonLiveVariables, 320 ConjunctsInSsa, 74 ConjunctsInUnsatCore, 23 InterpolantComputations, 3 PerfectInterpolantSequences, 30/230 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/cggmp2005_true-unreach-call_true-termination.c.i_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-18_10-02-04-208.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/cggmp2005_true-unreach-call_true-termination.c.i_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-18_10-02-04-208.csv Received shutdown request...