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-acceleration/underapprox_true-unreach-call2_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-3142e50-m [2018-09-10 10:13:23,027 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-10 10:13:23,029 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-10 10:13:23,049 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-10 10:13:23,050 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-10 10:13:23,051 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-10 10:13:23,053 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-10 10:13:23,055 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-10 10:13:23,057 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-10 10:13:23,060 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-10 10:13:23,063 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-10 10:13:23,063 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-10 10:13:23,064 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-10 10:13:23,065 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-10 10:13:23,069 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-10 10:13:23,070 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-10 10:13:23,070 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-10 10:13:23,072 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-10 10:13:23,074 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-10 10:13:23,076 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-10 10:13:23,077 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-10 10:13:23,078 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-10 10:13:23,081 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-10 10:13:23,081 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-10 10:13:23,081 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-10 10:13:23,082 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-10 10:13:23,083 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-10 10:13:23,084 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-10 10:13:23,085 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-10 10:13:23,086 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-10 10:13:23,086 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-10 10:13:23,087 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-09-10 10:13:23,089 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 [2018-09-10 10:13:23,104 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-10 10:13:23,105 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-10 10:13:23,105 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-10 10:13:23,106 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-10 10:13:23,106 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-10 10:13:23,106 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-10 10:13:23,106 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-10 10:13:23,107 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-10 10:13:23,107 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-10 10:13:23,107 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-10 10:13:23,107 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-10 10:13:23,108 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-10 10:13:23,108 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-10 10:13:23,108 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-10 10:13:23,108 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-10 10:13:23,109 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-10 10:13:23,109 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-10 10:13:23,109 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-10 10:13:23,109 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-10 10:13:23,109 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-10 10:13:23,110 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-10 10:13:23,110 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-10 10:13:23,110 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-10 10:13:23,110 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-10 10:13:23,110 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-10 10:13:23,111 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-10 10:13:23,111 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-10 10:13:23,111 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-10 10:13:23,111 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-10 10:13:23,111 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-10 10:13:23,112 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-10 10:13:23,112 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-10 10:13:23,112 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-10 10:13:23,156 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-10 10:13:23,169 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-10 10:13:23,174 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-10 10:13:23,176 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-10 10:13:23,176 INFO L276 PluginConnector]: CDTParser initialized [2018-09-10 10:13:23,177 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/underapprox_true-unreach-call2_true-termination.i [2018-09-10 10:13:23,535 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fe75bfdc/34b8b3d4bdd0477ba0a33dff807a784c/FLAGf0c482006 [2018-09-10 10:13:23,657 INFO L276 CDTParser]: Found 1 translation units. [2018-09-10 10:13:23,658 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/underapprox_true-unreach-call2_true-termination.i [2018-09-10 10:13:23,664 INFO L324 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fe75bfdc/34b8b3d4bdd0477ba0a33dff807a784c/FLAGf0c482006 [2018-09-10 10:13:23,683 INFO L332 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fe75bfdc/34b8b3d4bdd0477ba0a33dff807a784c [2018-09-10 10:13:23,696 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-10 10:13:23,702 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-10 10:13:23,704 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-10 10:13:23,704 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-10 10:13:23,716 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-10 10:13:23,717 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 10:13:23" (1/1) ... [2018-09-10 10:13:23,721 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@510c1ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:13:23, skipping insertion in model container [2018-09-10 10:13:23,721 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 10:13:23" (1/1) ... [2018-09-10 10:13:23,918 INFO L180 PRDispatcher]: Starting pre-run dispatcher in SV-COMP mode [2018-09-10 10:13:23,969 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 10:13:23,991 INFO L431 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-10 10:13:23,996 INFO L175 PostProcessor]: Settings: Checked method=main [2018-09-10 10:13:24,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:13:24 WrapperNode [2018-09-10 10:13:24,012 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-10 10:13:24,013 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-10 10:13:24,013 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-10 10:13:24,014 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-10 10:13:24,024 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:13:24" (1/1) ... [2018-09-10 10:13:24,031 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:13:24" (1/1) ... [2018-09-10 10:13:24,038 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-10 10:13:24,038 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-10 10:13:24,039 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-10 10:13:24,039 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-10 10:13:24,050 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:13:24" (1/1) ... [2018-09-10 10:13:24,051 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:13:24" (1/1) ... [2018-09-10 10:13:24,051 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:13:24" (1/1) ... [2018-09-10 10:13:24,051 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:13:24" (1/1) ... [2018-09-10 10:13:24,053 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:13:24" (1/1) ... [2018-09-10 10:13:24,059 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:13:24" (1/1) ... [2018-09-10 10:13:24,061 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:13:24" (1/1) ... [2018-09-10 10:13:24,063 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-10 10:13:24,063 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-10 10:13:24,063 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-10 10:13:24,064 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-10 10:13:24,065 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:13:24" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-10 10:13:24,141 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-10 10:13:24,141 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-10 10:13:24,141 INFO L130 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_acceleration_underapprox_true_unreach_call__true_termination_i____VERIFIER_assert [2018-09-10 10:13:24,141 INFO L138 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_acceleration_underapprox_true_unreach_call__true_termination_i____VERIFIER_assert [2018-09-10 10:13:24,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-10 10:13:24,142 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-10 10:13:24,142 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-10 10:13:24,142 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-10 10:13:24,461 INFO L353 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-10 10:13:24,462 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 10:13:24 BoogieIcfgContainer [2018-09-10 10:13:24,462 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-10 10:13:24,463 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-10 10:13:24,463 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-10 10:13:24,466 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-10 10:13:24,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 10:13:23" (1/3) ... [2018-09-10 10:13:24,467 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eb49b71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 10:13:24, skipping insertion in model container [2018-09-10 10:13:24,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 10:13:24" (2/3) ... [2018-09-10 10:13:24,468 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6eb49b71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 10:13:24, skipping insertion in model container [2018-09-10 10:13:24,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 10:13:24" (3/3) ... [2018-09-10 10:13:24,470 INFO L112 eAbstractionObserver]: Analyzing ICFG underapprox_true-unreach-call2_true-termination.i [2018-09-10 10:13:24,480 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-10 10:13:24,488 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-10 10:13:24,539 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-10 10:13:24,540 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-10 10:13:24,540 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-10 10:13:24,541 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-10 10:13:24,541 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-10 10:13:24,541 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-10 10:13:24,541 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-10 10:13:24,541 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-10 10:13:24,541 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-10 10:13:24,559 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2018-09-10 10:13:24,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2018-09-10 10:13:24,565 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 10:13:24,566 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 10:13:24,568 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_acceleration_underapprox_true_unreach_call__true_termination_i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 10:13:24,573 INFO L82 PathProgramCache]: Analyzing trace with hash 314686959, now seen corresponding path program 1 times [2018-09-10 10:13:24,576 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 10:13:24,630 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:13:24,630 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:13:24,631 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:13:24,631 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 10:13:24,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:13:24,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:13:24,702 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 10:13:24,702 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-09-10 10:13:24,702 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 10:13:24,707 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-09-10 10:13:24,723 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-09-10 10:13:24,724 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-09-10 10:13:24,727 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 2 states. [2018-09-10 10:13:24,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 10:13:24,759 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2018-09-10 10:13:24,759 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-10 10:13:24,761 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2018-09-10 10:13:24,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 10:13:24,773 INFO L225 Difference]: With dead ends: 29 [2018-09-10 10:13:24,773 INFO L226 Difference]: Without dead ends: 12 [2018-09-10 10:13:24,777 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 [2018-09-10 10:13:24,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2018-09-10 10:13:24,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2018-09-10 10:13:24,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2018-09-10 10:13:24,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2018-09-10 10:13:24,823 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 10 [2018-09-10 10:13:24,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 10:13:24,823 INFO L480 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2018-09-10 10:13:24,823 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-09-10 10:13:24,824 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2018-09-10 10:13:24,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-09-10 10:13:24,824 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 10:13:24,825 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 10:13:24,825 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_acceleration_underapprox_true_unreach_call__true_termination_i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 10:13:24,825 INFO L82 PathProgramCache]: Analyzing trace with hash 926255632, now seen corresponding path program 1 times [2018-09-10 10:13:24,826 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 10:13:24,827 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:13:24,827 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:13:24,827 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:13:24,828 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 10:13:24,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:13:24,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:13:24,971 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-10 10:13:24,972 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-10 10:13:24,972 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 10:13:24,975 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-10 10:13:24,976 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-10 10:13:24,976 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 10:13:24,977 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 3 states. [2018-09-10 10:13:25,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 10:13:25,032 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2018-09-10 10:13:25,035 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-10 10:13:25,035 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2018-09-10 10:13:25,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 10:13:25,036 INFO L225 Difference]: With dead ends: 19 [2018-09-10 10:13:25,036 INFO L226 Difference]: Without dead ends: 14 [2018-09-10 10:13:25,038 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-10 10:13:25,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2018-09-10 10:13:25,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2018-09-10 10:13:25,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2018-09-10 10:13:25,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2018-09-10 10:13:25,045 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 11 [2018-09-10 10:13:25,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 10:13:25,045 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2018-09-10 10:13:25,045 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-10 10:13:25,047 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2018-09-10 10:13:25,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-09-10 10:13:25,047 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 10:13:25,048 INFO L376 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 10:13:25,048 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_acceleration_underapprox_true_unreach_call__true_termination_i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 10:13:25,048 INFO L82 PathProgramCache]: Analyzing trace with hash -1883357962, now seen corresponding path program 1 times [2018-09-10 10:13:25,049 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 10:13:25,051 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:13:25,051 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:13:25,051 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:13:25,051 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 10:13:25,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:13:25,175 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:13:25,176 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:13:25,176 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 [2018-09-10 10:13:25,187 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:13:25,187 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 10:13:25,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:13:25,222 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:13:25,249 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:13:25,250 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:13:25,496 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:13:25,525 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:13:25,525 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 [2018-09-10 10:13:25,541 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:13:25,542 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-10 10:13:25,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:13:25,560 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:13:25,597 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:13:25,597 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:13:25,884 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:13:25,889 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 10:13:25,889 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 7, 4, 4] total 11 [2018-09-10 10:13:25,889 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 10:13:25,890 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-09-10 10:13:25,890 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-09-10 10:13:25,892 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-09-10 10:13:25,892 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 4 states. [2018-09-10 10:13:25,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 10:13:25,966 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2018-09-10 10:13:25,967 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-09-10 10:13:25,968 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2018-09-10 10:13:25,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 10:13:25,969 INFO L225 Difference]: With dead ends: 21 [2018-09-10 10:13:25,970 INFO L226 Difference]: Without dead ends: 16 [2018-09-10 10:13:25,970 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 42 SyntacticMatches, 4 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-09-10 10:13:25,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-09-10 10:13:25,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-09-10 10:13:25,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-09-10 10:13:25,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2018-09-10 10:13:25,975 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 13 [2018-09-10 10:13:25,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 10:13:25,976 INFO L480 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2018-09-10 10:13:25,976 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-09-10 10:13:25,976 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2018-09-10 10:13:25,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2018-09-10 10:13:25,977 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 10:13:25,977 INFO L376 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 10:13:25,977 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_acceleration_underapprox_true_unreach_call__true_termination_i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 10:13:25,977 INFO L82 PathProgramCache]: Analyzing trace with hash -387592612, now seen corresponding path program 2 times [2018-09-10 10:13:25,977 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 10:13:25,978 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:13:25,979 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-10 10:13:25,979 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:13:25,979 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 10:13:25,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:13:26,155 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:13:26,155 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:13:26,155 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 [2018-09-10 10:13:26,165 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-10 10:13:26,165 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-09-10 10:13:26,177 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-10 10:13:26,177 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-10 10:13:26,181 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:13:26,198 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:13:26,198 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:13:26,522 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:13:26,542 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:13:26,543 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 [2018-09-10 10:13:26,558 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-09-10 10:13:26,559 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST1 (IT: FPandBP) [2018-09-10 10:13:26,577 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-09-10 10:13:26,577 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-10 10:13:26,581 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:13:26,631 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:13:26,631 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:13:26,760 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:13:26,762 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-10 10:13:26,762 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 8, 5, 5] total 14 [2018-09-10 10:13:26,762 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-10 10:13:26,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-10 10:13:26,763 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-10 10:13:26,763 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2018-09-10 10:13:26,764 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 5 states. [2018-09-10 10:13:26,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 10:13:26,793 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2018-09-10 10:13:26,795 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-09-10 10:13:26,795 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2018-09-10 10:13:26,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 10:13:26,796 INFO L225 Difference]: With dead ends: 23 [2018-09-10 10:13:26,796 INFO L226 Difference]: Without dead ends: 18 [2018-09-10 10:13:26,797 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 48 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2018-09-10 10:13:26,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2018-09-10 10:13:26,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2018-09-10 10:13:26,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2018-09-10 10:13:26,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2018-09-10 10:13:26,801 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 15 [2018-09-10 10:13:26,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 10:13:26,801 INFO L480 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2018-09-10 10:13:26,802 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-10 10:13:26,802 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2018-09-10 10:13:26,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-09-10 10:13:26,803 INFO L368 BasicCegarLoop]: Found error trace [2018-09-10 10:13:26,803 INFO L376 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-10 10:13:26,803 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_acceleration_underapprox_true_unreach_call__true_termination_i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-10 10:13:26,803 INFO L82 PathProgramCache]: Analyzing trace with hash -1771135422, now seen corresponding path program 3 times [2018-09-10 10:13:26,804 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-10 10:13:26,804 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:13:26,805 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-09-10 10:13:26,805 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-10 10:13:26,805 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-10 10:13:26,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-10 10:13:27,210 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-10 10:13:27,211 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-10 10:13:27,211 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 [2018-09-10 10:13:27,222 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-09-10 10:13:27,223 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-09-10 10:13:27,235 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2018-09-10 10:13:27,235 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-09-10 10:13:27,239 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-10 10:13:27,356 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-09-10 10:13:27,357 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-10 10:13:27,461 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-09-10 10:13:27,482 INFO L313 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-09-10 10:13:27,482 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [6] total 13 [2018-09-10 10:13:27,482 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-10 10:13:27,483 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-10 10:13:27,483 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-10 10:13:27,483 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2018-09-10 10:13:27,484 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 6 states. [2018-09-10 10:13:27,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-10 10:13:27,526 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2018-09-10 10:13:27,527 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-09-10 10:13:27,527 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2018-09-10 10:13:27,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-10 10:13:27,528 INFO L225 Difference]: With dead ends: 18 [2018-09-10 10:13:27,528 INFO L226 Difference]: Without dead ends: 0 [2018-09-10 10:13:27,529 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2018-09-10 10:13:27,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-09-10 10:13:27,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-09-10 10:13:27,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-09-10 10:13:27,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-09-10 10:13:27,530 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2018-09-10 10:13:27,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-10 10:13:27,530 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-09-10 10:13:27,530 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-10 10:13:27,530 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-09-10 10:13:27,531 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-09-10 10:13:27,535 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-09-10 10:13:27,587 INFO L429 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2018-09-10 10:13:27,588 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2018-09-10 10:13:27,588 INFO L426 ceAbstractionStarter]: For program point L3-2(lines 2 7) no Hoare annotation was computed. [2018-09-10 10:13:27,588 INFO L426 ceAbstractionStarter]: For program point __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_acceleration_underapprox_true_unreach_call__true_termination_i____VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2018-09-10 10:13:27,589 INFO L429 ceAbstractionStarter]: At program point __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_acceleration_underapprox_true_unreach_call__true_termination_i____VERIFIER_assertENTRY(lines 2 7) the Hoare annotation is: true [2018-09-10 10:13:27,589 INFO L426 ceAbstractionStarter]: For program point __U_MULTI_f_storage_repos_ultimate_trunk_examples_svcomp_loop_acceleration_underapprox_true_unreach_call__true_termination_i____VERIFIER_assertEXIT(lines 2 7) no Hoare annotation was computed. [2018-09-10 10:13:27,589 INFO L426 ceAbstractionStarter]: For program point L4(line 4) no Hoare annotation was computed. [2018-09-10 10:13:27,589 INFO L426 ceAbstractionStarter]: For program point L3(lines 3 5) no Hoare annotation was computed. [2018-09-10 10:13:27,589 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-09-10 10:13:27,590 INFO L429 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2018-09-10 10:13:27,590 INFO L429 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2018-09-10 10:13:27,590 INFO L426 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-09-10 10:13:27,590 INFO L429 ceAbstractionStarter]: At program point mainENTRY(lines 8 16) the Hoare annotation is: true [2018-09-10 10:13:27,590 INFO L426 ceAbstractionStarter]: For program point mainEXIT(lines 8 16) no Hoare annotation was computed. [2018-09-10 10:13:27,590 INFO L426 ceAbstractionStarter]: For program point mainFINAL(lines 8 16) no Hoare annotation was computed. [2018-09-10 10:13:27,591 INFO L426 ceAbstractionStarter]: For program point L11-1(lines 11 14) no Hoare annotation was computed. [2018-09-10 10:13:27,591 INFO L422 ceAbstractionStarter]: At program point L11-3(lines 11 14) the Hoare annotation is: (or (and (<= main_~x~0 0) (<= 0 main_~x~0)) (< (mod (+ main_~x~0 4294967295) 4294967296) 6)) [2018-09-10 10:13:27,591 INFO L422 ceAbstractionStarter]: At program point L11-4(lines 11 14) the Hoare annotation is: (and (< (mod (+ main_~x~0 4294967295) 4294967296) 6) (<= 6 (mod main_~x~0 4294967296))) [2018-09-10 10:13:27,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 10:13:27 BoogieIcfgContainer [2018-09-10 10:13:27,603 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-10 10:13:27,604 INFO L168 Benchmark]: Toolchain (without parser) took 3907.59 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 750.3 MB). Free memory was 1.4 GB in the beginning and 2.0 GB in the end (delta: -625.7 MB). Peak memory consumption was 124.5 MB. Max. memory is 7.1 GB. [2018-09-10 10:13:27,606 INFO L168 Benchmark]: CDTParser took 0.23 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. [2018-09-10 10:13:27,607 INFO L168 Benchmark]: CACSL2BoogieTranslator took 309.11 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. [2018-09-10 10:13:27,608 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.93 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. [2018-09-10 10:13:27,608 INFO L168 Benchmark]: Boogie Preprocessor took 24.40 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. [2018-09-10 10:13:27,609 INFO L168 Benchmark]: RCFGBuilder took 398.73 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 750.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -792.3 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. [2018-09-10 10:13:27,610 INFO L168 Benchmark]: TraceAbstraction took 3140.42 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: 156.0 MB). Peak memory consumption was 156.0 MB. Max. memory is 7.1 GB. [2018-09-10 10:13:27,615 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 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 309.11 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 24.93 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 24.40 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 398.73 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 750.3 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -792.3 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3140.42 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: 156.0 MB). Peak memory consumption was 156.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: 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: 11]: Loop Invariant Derived loop invariant: (x <= 0 && 0 <= x) || (x + 4294967295) % 4294967296 < 6 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 18 locations, 1 error locations. SAFE Result, 3.0s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 63 SDtfs, 2 SDslu, 81 SDs, 0 SdLazy, 37 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 166 GetRequests, 121 SyntacticMatches, 11 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 11 PreInvPairs, 15 NumberOfFragments, 33 HoareAnnotationTreeSize, 11 FomulaSimplifications, 28 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 139 NumberOfCodeBlocks, 135 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 197 ConstructedInterpolants, 0 QuantifiedInterpolants, 9621 SizeOfPredicates, 5 NumberOfNonLiveVariables, 167 ConjunctsInSsa, 46 ConjunctsInUnsatCore, 15 InterpolantComputations, 4 PerfectInterpolantSequences, 24/76 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/underapprox_true-unreach-call2_true-termination.i_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-10_10-13-27-630.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/underapprox_true-unreach-call2_true-termination.i_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-10_10-13-27-630.csv Received shutdown request...