java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-lit/cggmp2005b_true-unreach-call_true-termination.c.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 15:53:49,753 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 15:53:49,755 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 15:53:49,767 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 15:53:49,767 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 15:53:49,768 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 15:53:49,769 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 15:53:49,771 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 15:53:49,773 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 15:53:49,774 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 15:53:49,775 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 15:53:49,775 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 15:53:49,776 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 15:53:49,777 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 15:53:49,779 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 15:53:49,779 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 15:53:49,780 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 15:53:49,783 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 15:53:49,785 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 15:53:49,787 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 15:53:49,788 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 15:53:49,790 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 15:53:49,792 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-23 15:53:49,802 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-23 15:53:49,821 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 15:53:49,822 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 15:53:49,822 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 15:53:49,826 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-23 15:53:49,827 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-23 15:53:49,827 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-23 15:53:49,828 INFO L133 SettingsManager]: * Use SBE=true [2018-10-23 15:53:49,830 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 15:53:49,830 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 15:53:49,830 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 15:53:49,831 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 15:53:49,831 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 15:53:49,831 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 15:53:49,831 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 15:53:49,831 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 15:53:49,832 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 15:53:49,832 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 15:53:49,832 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 15:53:49,832 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 15:53:49,833 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 15:53:49,833 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 15:53:49,833 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 15:53:49,833 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 15:53:49,834 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-23 15:53:49,834 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 15:53:49,834 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 15:53:49,834 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 15:53:49,834 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 15:53:49,877 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 15:53:49,898 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 15:53:49,903 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 15:53:49,904 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 15:53:49,905 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 15:53:49,905 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/loop-lit/cggmp2005b_true-unreach-call_true-termination.c.i [2018-10-23 15:53:49,954 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/12f3dd50c/3504026ebb454618a84144ec05c8b2c8/FLAG5618251bb [2018-10-23 15:53:50,399 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 15:53:50,400 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/cggmp2005b_true-unreach-call_true-termination.c.i [2018-10-23 15:53:50,406 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/12f3dd50c/3504026ebb454618a84144ec05c8b2c8/FLAG5618251bb [2018-10-23 15:53:50,421 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/12f3dd50c/3504026ebb454618a84144ec05c8b2c8 [2018-10-23 15:53:50,430 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 15:53:50,431 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 15:53:50,434 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 15:53:50,435 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 15:53:50,439 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 15:53:50,440 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 03:53:50" (1/1) ... [2018-10-23 15:53:50,443 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@628a7567 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 03:53:50, skipping insertion in model container [2018-10-23 15:53:50,443 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 03:53:50" (1/1) ... [2018-10-23 15:53:50,453 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 15:53:50,482 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 15:53:50,653 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 15:53:50,657 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 15:53:50,675 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 15:53:50,690 INFO L193 MainTranslator]: Completed translation [2018-10-23 15:53:50,691 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 03:53:50 WrapperNode [2018-10-23 15:53:50,691 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 15:53:50,693 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 15:53:50,693 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 15:53:50,693 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 15:53:50,705 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 03:53:50" (1/1) ... [2018-10-23 15:53:50,711 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 03:53:50" (1/1) ... [2018-10-23 15:53:50,731 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 15:53:50,732 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 15:53:50,732 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 15:53:50,732 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 15:53:50,742 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 03:53:50" (1/1) ... [2018-10-23 15:53:50,742 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 03:53:50" (1/1) ... [2018-10-23 15:53:50,743 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 03:53:50" (1/1) ... [2018-10-23 15:53:50,743 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 03:53:50" (1/1) ... [2018-10-23 15:53:50,745 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 03:53:50" (1/1) ... [2018-10-23 15:53:50,749 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 03:53:50" (1/1) ... [2018-10-23 15:53:50,750 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 03:53:50" (1/1) ... [2018-10-23 15:53:50,751 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 15:53:50,752 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 15:53:50,752 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 15:53:50,752 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 15:53:50,753 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 03:53:50" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-23 15:53:50,882 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 15:53:50,883 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 15:53:51,115 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 15:53:51,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 03:53:51 BoogieIcfgContainer [2018-10-23 15:53:51,116 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 15:53:51,117 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 15:53:51,117 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 15:53:51,126 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 15:53:51,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 03:53:50" (1/3) ... [2018-10-23 15:53:51,131 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13986dc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 03:53:51, skipping insertion in model container [2018-10-23 15:53:51,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 03:53:50" (2/3) ... [2018-10-23 15:53:51,132 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13986dc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 03:53:51, skipping insertion in model container [2018-10-23 15:53:51,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 03:53:51" (3/3) ... [2018-10-23 15:53:51,138 INFO L112 eAbstractionObserver]: Analyzing ICFG cggmp2005b_true-unreach-call_true-termination.c.i [2018-10-23 15:53:51,155 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 15:53:51,171 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 15:53:51,188 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 15:53:51,221 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-23 15:53:51,222 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 15:53:51,222 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 15:53:51,222 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 15:53:51,222 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 15:53:51,222 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 15:53:51,223 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 15:53:51,223 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 15:53:51,223 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 15:53:51,238 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2018-10-23 15:53:51,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-10-23 15:53:51,244 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 15:53:51,245 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-10-23 15:53:51,248 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 15:53:51,254 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 15:53:51,254 INFO L82 PathProgramCache]: Analyzing trace with hash 890614951, now seen corresponding path program 1 times [2018-10-23 15:53:51,256 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 15:53:51,257 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 15:53:51,309 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 15:53:51,309 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 15:53:51,309 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 15:53:51,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 15:53:51,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 15:53:51,369 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 15:53:51,369 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-23 15:53:51,373 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-23 15:53:51,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-23 15:53:51,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-23 15:53:51,392 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 2 states. [2018-10-23 15:53:51,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 15:53:51,409 INFO L93 Difference]: Finished difference Result 32 states and 44 transitions. [2018-10-23 15:53:51,410 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-23 15:53:51,411 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2018-10-23 15:53:51,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 15:53:51,422 INFO L225 Difference]: With dead ends: 32 [2018-10-23 15:53:51,422 INFO L226 Difference]: Without dead ends: 13 [2018-10-23 15:53:51,426 INFO L605 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 [2018-10-23 15:53:51,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-10-23 15:53:51,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-10-23 15:53:51,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-10-23 15:53:51,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2018-10-23 15:53:51,463 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 6 [2018-10-23 15:53:51,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 15:53:51,463 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2018-10-23 15:53:51,463 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-23 15:53:51,464 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2018-10-23 15:53:51,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-10-23 15:53:51,464 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 15:53:51,464 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-10-23 15:53:51,465 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 15:53:51,465 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 15:53:51,465 INFO L82 PathProgramCache]: Analyzing trace with hash 1805950470, now seen corresponding path program 1 times [2018-10-23 15:53:51,465 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 15:53:51,466 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 15:53:51,467 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 15:53:51,467 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 15:53:51,467 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 15:53:51,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 15:53:51,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 15:53:51,538 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 15:53:51,538 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 15:53:51,539 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 15:53:51,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 15:53:51,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 15:53:51,541 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand 3 states. [2018-10-23 15:53:51,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 15:53:51,582 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2018-10-23 15:53:51,582 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 15:53:51,582 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2018-10-23 15:53:51,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 15:53:51,583 INFO L225 Difference]: With dead ends: 19 [2018-10-23 15:53:51,583 INFO L226 Difference]: Without dead ends: 15 [2018-10-23 15:53:51,585 INFO L605 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 [2018-10-23 15:53:51,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-10-23 15:53:51,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-10-23 15:53:51,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-10-23 15:53:51,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2018-10-23 15:53:51,589 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 7 [2018-10-23 15:53:51,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 15:53:51,589 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2018-10-23 15:53:51,589 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 15:53:51,589 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2018-10-23 15:53:51,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-10-23 15:53:51,590 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 15:53:51,590 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 15:53:51,590 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 15:53:51,591 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 15:53:51,591 INFO L82 PathProgramCache]: Analyzing trace with hash 871070680, now seen corresponding path program 1 times [2018-10-23 15:53:51,591 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 15:53:51,591 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 15:53:51,592 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 15:53:51,592 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 15:53:51,592 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 15:53:51,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 15:53:51,644 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 15:53:51,645 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 15:53:51,645 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 15:53:51,645 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 15:53:51,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 15:53:51,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 15:53:51,646 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand 3 states. [2018-10-23 15:53:51,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 15:53:51,664 INFO L93 Difference]: Finished difference Result 28 states and 33 transitions. [2018-10-23 15:53:51,664 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 15:53:51,665 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2018-10-23 15:53:51,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 15:53:51,665 INFO L225 Difference]: With dead ends: 28 [2018-10-23 15:53:51,665 INFO L226 Difference]: Without dead ends: 17 [2018-10-23 15:53:51,666 INFO L605 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 [2018-10-23 15:53:51,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-10-23 15:53:51,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-10-23 15:53:51,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-10-23 15:53:51,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2018-10-23 15:53:51,670 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 14 [2018-10-23 15:53:51,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 15:53:51,671 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2018-10-23 15:53:51,671 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 15:53:51,671 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2018-10-23 15:53:51,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-10-23 15:53:51,672 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 15:53:51,672 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 15:53:51,672 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 15:53:51,673 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 15:53:51,673 INFO L82 PathProgramCache]: Analyzing trace with hash -1734266850, now seen corresponding path program 1 times [2018-10-23 15:53:51,673 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 15:53:51,673 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 15:53:51,674 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 15:53:51,674 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 15:53:51,675 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 15:53:51,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 15:53:51,741 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-23 15:53:51,742 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 15:53:51,742 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-23 15:53:51,753 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 15:53:51,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 15:53:51,782 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 15:53:51,801 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-10-23 15:53:51,823 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 15:53:51,824 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-10-23 15:53:51,824 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 15:53:51,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 15:53:51,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 15:53:51,825 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand 4 states. [2018-10-23 15:53:51,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 15:53:51,902 INFO L93 Difference]: Finished difference Result 28 states and 32 transitions. [2018-10-23 15:53:51,902 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 15:53:51,902 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2018-10-23 15:53:51,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 15:53:51,903 INFO L225 Difference]: With dead ends: 28 [2018-10-23 15:53:51,904 INFO L226 Difference]: Without dead ends: 24 [2018-10-23 15:53:51,904 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 15:53:51,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-10-23 15:53:51,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-10-23 15:53:51,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-10-23 15:53:51,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2018-10-23 15:53:51,910 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 16 [2018-10-23 15:53:51,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 15:53:51,911 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2018-10-23 15:53:51,911 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 15:53:51,911 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2018-10-23 15:53:51,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-10-23 15:53:51,912 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 15:53:51,912 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 15:53:51,912 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 15:53:51,912 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 15:53:51,913 INFO L82 PathProgramCache]: Analyzing trace with hash -601694528, now seen corresponding path program 2 times [2018-10-23 15:53:51,913 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 15:53:51,913 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 15:53:51,914 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 15:53:51,914 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 15:53:51,914 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 15:53:51,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 15:53:52,007 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 15:53:52,008 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 15:53:52,008 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 15:53:52,019 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-23 15:53:52,034 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-23 15:53:52,034 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-23 15:53:52,036 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 15:53:52,180 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-23 15:53:52,211 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 15:53:52,211 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2018-10-23 15:53:52,212 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-23 15:53:52,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-23 15:53:52,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-10-23 15:53:52,213 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 7 states. [2018-10-23 15:53:52,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 15:53:52,478 INFO L93 Difference]: Finished difference Result 42 states and 50 transitions. [2018-10-23 15:53:52,479 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 15:53:52,479 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2018-10-23 15:53:52,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 15:53:52,480 INFO L225 Difference]: With dead ends: 42 [2018-10-23 15:53:52,480 INFO L226 Difference]: Without dead ends: 26 [2018-10-23 15:53:52,481 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2018-10-23 15:53:52,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-10-23 15:53:52,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-10-23 15:53:52,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-10-23 15:53:52,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2018-10-23 15:53:52,487 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 23 [2018-10-23 15:53:52,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 15:53:52,487 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2018-10-23 15:53:52,487 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-23 15:53:52,488 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2018-10-23 15:53:52,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-10-23 15:53:52,489 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 15:53:52,489 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2018-10-23 15:53:52,489 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 15:53:52,489 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 15:53:52,489 INFO L82 PathProgramCache]: Analyzing trace with hash 1655478586, now seen corresponding path program 3 times [2018-10-23 15:53:52,490 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 15:53:52,490 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 15:53:52,490 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 15:53:52,491 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-23 15:53:52,491 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 15:53:52,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 15:53:52,545 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-10-23 15:53:52,545 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 15:53:52,546 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 15:53:52,547 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 15:53:52,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 15:53:52,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-23 15:53:52,548 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 4 states. [2018-10-23 15:53:52,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 15:53:52,579 INFO L93 Difference]: Finished difference Result 39 states and 47 transitions. [2018-10-23 15:53:52,579 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 15:53:52,580 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2018-10-23 15:53:52,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 15:53:52,580 INFO L225 Difference]: With dead ends: 39 [2018-10-23 15:53:52,580 INFO L226 Difference]: Without dead ends: 0 [2018-10-23 15:53:52,581 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-23 15:53:52,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-10-23 15:53:52,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-10-23 15:53:52,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-10-23 15:53:52,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-10-23 15:53:52,582 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2018-10-23 15:53:52,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 15:53:52,583 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-10-23 15:53:52,583 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 15:53:52,583 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-10-23 15:53:52,583 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-10-23 15:53:52,588 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-10-23 15:53:52,660 INFO L425 ceAbstractionStarter]: For program point L15-1(lines 15 24) no Hoare annotation was computed. [2018-10-23 15:53:52,660 INFO L425 ceAbstractionStarter]: For program point L15-3(lines 15 24) no Hoare annotation was computed. [2018-10-23 15:53:52,660 INFO L425 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2018-10-23 15:53:52,660 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2018-10-23 15:53:52,661 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-10-23 15:53:52,661 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-10-23 15:53:52,661 INFO L425 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-10-23 15:53:52,661 INFO L428 ceAbstractionStarter]: At program point L4-2(lines 3 8) the Hoare annotation is: true [2018-10-23 15:53:52,661 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-10-23 15:53:52,662 INFO L425 ceAbstractionStarter]: For program point L21-1(lines 21 23) no Hoare annotation was computed. [2018-10-23 15:53:52,662 INFO L421 ceAbstractionStarter]: At program point L21-3(lines 21 23) the Hoare annotation is: (= ULTIMATE.start_main_~k~0 4) [2018-10-23 15:53:52,662 INFO L421 ceAbstractionStarter]: At program point L21-4(lines 15 24) the Hoare annotation is: (or (and (<= ULTIMATE.start_main_~i~0 0) (<= (+ ULTIMATE.start_main_~j~0 100) ULTIMATE.start_main_~i~0)) (= ULTIMATE.start_main_~k~0 4)) [2018-10-23 15:53:52,662 INFO L425 ceAbstractionStarter]: For program point L17-1(lines 17 19) no Hoare annotation was computed. [2018-10-23 15:53:52,662 INFO L421 ceAbstractionStarter]: At program point L17-3(lines 17 19) the Hoare annotation is: (or (<= ULTIMATE.start_main_~i~0 1) (= ULTIMATE.start_main_~k~0 4)) [2018-10-23 15:53:52,663 INFO L425 ceAbstractionStarter]: For program point L17-4(lines 17 19) no Hoare annotation was computed. [2018-10-23 15:53:52,663 INFO L425 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-10-23 15:53:52,663 INFO L428 ceAbstractionStarter]: At program point L26(lines 10 27) the Hoare annotation is: true [2018-10-23 15:53:52,677 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 03:53:52 BoogieIcfgContainer [2018-10-23 15:53:52,678 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 15:53:52,679 INFO L168 Benchmark]: Toolchain (without parser) took 2248.05 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 746.6 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -699.7 MB). Peak memory consumption was 46.9 MB. Max. memory is 7.1 GB. [2018-10-23 15:53:52,681 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. [2018-10-23 15:53:52,682 INFO L168 Benchmark]: CACSL2BoogieTranslator took 257.13 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. [2018-10-23 15:53:52,683 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.70 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. [2018-10-23 15:53:52,683 INFO L168 Benchmark]: Boogie Preprocessor took 19.52 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. [2018-10-23 15:53:52,684 INFO L168 Benchmark]: RCFGBuilder took 364.01 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 746.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -798.8 MB). Peak memory consumption was 26.6 MB. Max. memory is 7.1 GB. [2018-10-23 15:53:52,685 INFO L168 Benchmark]: TraceAbstraction took 1560.82 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 88.6 MB). Peak memory consumption was 88.6 MB. Max. memory is 7.1 GB. [2018-10-23 15:53:52,690 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 257.13 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 38.70 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 19.52 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 364.01 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 746.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -798.8 MB). Peak memory consumption was 26.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1560.82 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 88.6 MB). Peak memory consumption was 88.6 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: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: (i <= 0 && j + 100 <= i) || k == 4 - InvariantResult [Line: 3]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: k == 4 - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: i <= 1 || k == 4 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 1 error locations. SAFE Result, 1.4s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 89 SDtfs, 8 SDslu, 122 SDs, 0 SdLazy, 37 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 61 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 16 NumberOfFragments, 25 HoareAnnotationTreeSize, 5 FomulaSimplifications, 44 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 8 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 130 NumberOfCodeBlocks, 130 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 122 ConstructedInterpolants, 0 QuantifiedInterpolants, 4768 SizeOfPredicates, 3 NumberOfNonLiveVariables, 74 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 8 InterpolantComputations, 4 PerfectInterpolantSequences, 51/61 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...