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 -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-df4b876 [2018-11-06 22:51:56,579 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-06 22:51:56,581 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-06 22:51:56,594 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-06 22:51:56,594 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-06 22:51:56,595 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-06 22:51:56,599 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-06 22:51:56,600 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-06 22:51:56,612 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-06 22:51:56,613 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-06 22:51:56,614 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-06 22:51:56,614 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-06 22:51:56,615 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-06 22:51:56,616 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-06 22:51:56,619 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-06 22:51:56,620 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-06 22:51:56,621 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-06 22:51:56,625 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-06 22:51:56,628 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-06 22:51:56,629 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-06 22:51:56,630 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-06 22:51:56,632 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-06 22:51:56,634 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-06 22:51:56,634 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-06 22:51:56,634 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-06 22:51:56,635 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-06 22:51:56,636 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-06 22:51:56,636 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-06 22:51:56,637 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-06 22:51:56,638 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-06 22:51:56,638 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-06 22:51:56,639 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-11-06 22:51:56,641 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-11-06 22:51:56,656 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-06 22:51:56,656 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-06 22:51:56,657 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-06 22:51:56,657 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-06 22:51:56,658 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-06 22:51:56,658 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-06 22:51:56,658 INFO L133 SettingsManager]: * Use SBE=true [2018-11-06 22:51:56,658 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-06 22:51:56,659 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-06 22:51:56,659 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-06 22:51:56,659 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-06 22:51:56,659 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-06 22:51:56,659 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-06 22:51:56,660 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-06 22:51:56,660 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-06 22:51:56,660 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-06 22:51:56,660 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-06 22:51:56,660 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-06 22:51:56,661 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-06 22:51:56,661 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-06 22:51:56,661 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-06 22:51:56,661 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-06 22:51:56,661 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-06 22:51:56,662 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-06 22:51:56,662 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-06 22:51:56,662 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-06 22:51:56,662 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-06 22:51:56,662 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-06 22:51:56,709 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-06 22:51:56,722 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-06 22:51:56,725 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-06 22:51:56,727 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-06 22:51:56,727 INFO L276 PluginConnector]: CDTParser initialized [2018-11-06 22:51:56,728 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/cggmp2005b_true-unreach-call_true-termination.c.i [2018-11-06 22:51:56,790 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67b9cb27b/85cc6471e6a145e8905360bed03d56d3/FLAGe3c34f754 [2018-11-06 22:51:57,257 INFO L298 CDTParser]: Found 1 translation units. [2018-11-06 22:51:57,260 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/cggmp2005b_true-unreach-call_true-termination.c.i [2018-11-06 22:51:57,267 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67b9cb27b/85cc6471e6a145e8905360bed03d56d3/FLAGe3c34f754 [2018-11-06 22:51:57,285 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/67b9cb27b/85cc6471e6a145e8905360bed03d56d3 [2018-11-06 22:51:57,298 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-06 22:51:57,301 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-06 22:51:57,303 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-06 22:51:57,304 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-06 22:51:57,308 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-06 22:51:57,309 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:51:57" (1/1) ... [2018-11-06 22:51:57,312 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65ed82e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:51:57, skipping insertion in model container [2018-11-06 22:51:57,312 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:51:57" (1/1) ... [2018-11-06 22:51:57,323 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-06 22:51:57,347 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-06 22:51:57,529 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 22:51:57,533 INFO L189 MainTranslator]: Completed pre-run [2018-11-06 22:51:57,555 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 22:51:57,569 INFO L193 MainTranslator]: Completed translation [2018-11-06 22:51:57,569 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:51:57 WrapperNode [2018-11-06 22:51:57,569 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-06 22:51:57,570 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-06 22:51:57,570 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-06 22:51:57,571 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-06 22:51:57,580 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:51:57" (1/1) ... [2018-11-06 22:51:57,585 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:51:57" (1/1) ... [2018-11-06 22:51:57,602 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-06 22:51:57,602 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-06 22:51:57,603 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-06 22:51:57,603 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-06 22:51:57,610 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:51:57" (1/1) ... [2018-11-06 22:51:57,611 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:51:57" (1/1) ... [2018-11-06 22:51:57,611 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:51:57" (1/1) ... [2018-11-06 22:51:57,612 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:51:57" (1/1) ... [2018-11-06 22:51:57,613 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:51:57" (1/1) ... [2018-11-06 22:51:57,619 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:51:57" (1/1) ... [2018-11-06 22:51:57,620 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:51:57" (1/1) ... [2018-11-06 22:51:57,621 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-06 22:51:57,622 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-06 22:51:57,622 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-06 22:51:57,622 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-06 22:51:57,623 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:51:57" (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 [2018-11-06 22:51:57,746 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-06 22:51:57,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-06 22:51:57,942 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-06 22:51:57,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:51:57 BoogieIcfgContainer [2018-11-06 22:51:57,943 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-06 22:51:57,944 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-06 22:51:57,944 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-06 22:51:57,949 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-06 22:51:57,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:51:57" (1/3) ... [2018-11-06 22:51:57,950 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dfb1e18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:51:57, skipping insertion in model container [2018-11-06 22:51:57,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:51:57" (2/3) ... [2018-11-06 22:51:57,951 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dfb1e18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:51:57, skipping insertion in model container [2018-11-06 22:51:57,951 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:51:57" (3/3) ... [2018-11-06 22:51:57,953 INFO L112 eAbstractionObserver]: Analyzing ICFG cggmp2005b_true-unreach-call_true-termination.c.i [2018-11-06 22:51:57,963 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-06 22:51:57,973 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-06 22:51:57,992 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-06 22:51:58,022 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-06 22:51:58,023 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-06 22:51:58,023 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-06 22:51:58,023 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-06 22:51:58,023 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-06 22:51:58,024 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-06 22:51:58,024 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-06 22:51:58,024 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-06 22:51:58,024 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-06 22:51:58,038 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2018-11-06 22:51:58,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-11-06 22:51:58,044 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:51:58,045 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-11-06 22:51:58,049 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:51:58,054 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:51:58,055 INFO L82 PathProgramCache]: Analyzing trace with hash 890614951, now seen corresponding path program 1 times [2018-11-06 22:51:58,057 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:51:58,058 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:51:58,107 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:51:58,107 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:51:58,107 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:51:58,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:51:58,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:51:58,159 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 22:51:58,159 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-06 22:51:58,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-06 22:51:58,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-06 22:51:58,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-06 22:51:58,178 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 2 states. [2018-11-06 22:51:58,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:51:58,194 INFO L93 Difference]: Finished difference Result 32 states and 44 transitions. [2018-11-06 22:51:58,194 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-06 22:51:58,195 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2018-11-06 22:51:58,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:51:58,205 INFO L225 Difference]: With dead ends: 32 [2018-11-06 22:51:58,205 INFO L226 Difference]: Without dead ends: 13 [2018-11-06 22:51:58,209 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 [2018-11-06 22:51:58,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2018-11-06 22:51:58,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2018-11-06 22:51:58,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2018-11-06 22:51:58,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2018-11-06 22:51:58,248 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 6 [2018-11-06 22:51:58,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:51:58,248 INFO L480 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2018-11-06 22:51:58,248 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-06 22:51:58,249 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2018-11-06 22:51:58,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-11-06 22:51:58,249 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:51:58,249 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:51:58,250 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:51:58,250 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:51:58,250 INFO L82 PathProgramCache]: Analyzing trace with hash 1805950470, now seen corresponding path program 1 times [2018-11-06 22:51:58,250 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:51:58,251 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:51:58,252 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:51:58,252 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:51:58,252 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:51:58,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:51:58,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:51:58,331 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 22:51:58,331 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 22:51:58,334 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-06 22:51:58,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-06 22:51:58,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 22:51:58,335 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand 3 states. [2018-11-06 22:51:58,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:51:58,412 INFO L93 Difference]: Finished difference Result 19 states and 21 transitions. [2018-11-06 22:51:58,412 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-06 22:51:58,413 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2018-11-06 22:51:58,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:51:58,413 INFO L225 Difference]: With dead ends: 19 [2018-11-06 22:51:58,413 INFO L226 Difference]: Without dead ends: 15 [2018-11-06 22:51:58,415 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 22:51:58,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2018-11-06 22:51:58,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2018-11-06 22:51:58,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2018-11-06 22:51:58,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2018-11-06 22:51:58,423 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 7 [2018-11-06 22:51:58,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:51:58,423 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2018-11-06 22:51:58,423 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-06 22:51:58,423 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2018-11-06 22:51:58,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-06 22:51:58,424 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:51:58,424 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:51:58,428 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:51:58,428 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:51:58,428 INFO L82 PathProgramCache]: Analyzing trace with hash 871070680, now seen corresponding path program 1 times [2018-11-06 22:51:58,428 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:51:58,429 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:51:58,429 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:51:58,430 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:51:58,430 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:51:58,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:51:58,514 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:51:58,515 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 22:51:58,515 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 22:51:58,515 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-06 22:51:58,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-06 22:51:58,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 22:51:58,517 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand 3 states. [2018-11-06 22:51:58,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:51:58,568 INFO L93 Difference]: Finished difference Result 28 states and 33 transitions. [2018-11-06 22:51:58,568 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-06 22:51:58,568 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2018-11-06 22:51:58,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:51:58,569 INFO L225 Difference]: With dead ends: 28 [2018-11-06 22:51:58,569 INFO L226 Difference]: Without dead ends: 17 [2018-11-06 22:51:58,570 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 22:51:58,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2018-11-06 22:51:58,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2018-11-06 22:51:58,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2018-11-06 22:51:58,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2018-11-06 22:51:58,575 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 14 [2018-11-06 22:51:58,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:51:58,575 INFO L480 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2018-11-06 22:51:58,575 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-06 22:51:58,575 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2018-11-06 22:51:58,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2018-11-06 22:51:58,576 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:51:58,576 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:51:58,577 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:51:58,577 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:51:58,577 INFO L82 PathProgramCache]: Analyzing trace with hash -1734266850, now seen corresponding path program 1 times [2018-11-06 22:51:58,577 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:51:58,578 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:51:58,579 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:51:58,579 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:51:58,579 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:51:58,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:51:58,674 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-06 22:51:58,675 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 22:51:58,675 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP 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 [2018-11-06 22:51:58,688 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:51:58,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:51:58,726 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:51:58,745 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-06 22:51:58,771 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 22:51:58,772 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2018-11-06 22:51:58,772 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 22:51:58,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 22:51:58,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 22:51:58,773 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand 4 states. [2018-11-06 22:51:58,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:51:58,850 INFO L93 Difference]: Finished difference Result 28 states and 32 transitions. [2018-11-06 22:51:58,850 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 22:51:58,851 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2018-11-06 22:51:58,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:51:58,851 INFO L225 Difference]: With dead ends: 28 [2018-11-06 22:51:58,852 INFO L226 Difference]: Without dead ends: 24 [2018-11-06 22:51:58,853 INFO L604 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 [2018-11-06 22:51:58,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2018-11-06 22:51:58,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2018-11-06 22:51:58,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-11-06 22:51:58,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2018-11-06 22:51:58,859 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 16 [2018-11-06 22:51:58,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:51:58,859 INFO L480 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2018-11-06 22:51:58,860 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 22:51:58,860 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2018-11-06 22:51:58,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-11-06 22:51:58,861 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:51:58,861 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:51:58,861 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:51:58,861 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:51:58,862 INFO L82 PathProgramCache]: Analyzing trace with hash -601694528, now seen corresponding path program 2 times [2018-11-06 22:51:58,862 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:51:58,862 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:51:58,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:51:58,863 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:51:58,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:51:58,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:51:58,939 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:51:58,939 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 22:51:58,939 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 22:51:58,955 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-06 22:51:58,971 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-06 22:51:58,972 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-06 22:51:58,975 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:51:59,120 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-06 22:51:59,147 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 22:51:59,148 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2018-11-06 22:51:59,148 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-06 22:51:59,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-06 22:51:59,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-11-06 22:51:59,149 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 7 states. [2018-11-06 22:51:59,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:51:59,372 INFO L93 Difference]: Finished difference Result 42 states and 50 transitions. [2018-11-06 22:51:59,373 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 22:51:59,373 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2018-11-06 22:51:59,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:51:59,374 INFO L225 Difference]: With dead ends: 42 [2018-11-06 22:51:59,374 INFO L226 Difference]: Without dead ends: 26 [2018-11-06 22:51:59,375 INFO L604 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 [2018-11-06 22:51:59,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2018-11-06 22:51:59,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-11-06 22:51:59,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-11-06 22:51:59,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2018-11-06 22:51:59,387 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 23 [2018-11-06 22:51:59,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:51:59,387 INFO L480 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2018-11-06 22:51:59,388 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-06 22:51:59,388 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2018-11-06 22:51:59,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-11-06 22:51:59,391 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:51:59,392 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2018-11-06 22:51:59,392 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:51:59,392 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:51:59,392 INFO L82 PathProgramCache]: Analyzing trace with hash 1655478586, now seen corresponding path program 3 times [2018-11-06 22:51:59,393 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:51:59,393 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:51:59,395 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:51:59,395 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-06 22:51:59,395 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:51:59,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:51:59,503 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-11-06 22:51:59,503 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 22:51:59,503 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 22:51:59,504 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 22:51:59,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 22:51:59,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-06 22:51:59,504 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 4 states. [2018-11-06 22:51:59,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:51:59,535 INFO L93 Difference]: Finished difference Result 39 states and 47 transitions. [2018-11-06 22:51:59,535 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 22:51:59,535 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2018-11-06 22:51:59,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:51:59,536 INFO L225 Difference]: With dead ends: 39 [2018-11-06 22:51:59,536 INFO L226 Difference]: Without dead ends: 0 [2018-11-06 22:51:59,537 INFO L604 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 [2018-11-06 22:51:59,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2018-11-06 22:51:59,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2018-11-06 22:51:59,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2018-11-06 22:51:59,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2018-11-06 22:51:59,538 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2018-11-06 22:51:59,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:51:59,538 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-06 22:51:59,538 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 22:51:59,539 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2018-11-06 22:51:59,539 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2018-11-06 22:51:59,543 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2018-11-06 22:51:59,652 INFO L425 ceAbstractionStarter]: For program point L15-1(lines 15 24) no Hoare annotation was computed. [2018-11-06 22:51:59,652 INFO L425 ceAbstractionStarter]: For program point L15-3(lines 15 24) no Hoare annotation was computed. [2018-11-06 22:51:59,653 INFO L425 ceAbstractionStarter]: For program point L-1(line -1) no Hoare annotation was computed. [2018-11-06 22:51:59,653 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2018-11-06 22:51:59,653 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2018-11-06 22:51:59,653 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2018-11-06 22:51:59,653 INFO L425 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2018-11-06 22:51:59,654 INFO L428 ceAbstractionStarter]: At program point L4-2(lines 3 8) the Hoare annotation is: true [2018-11-06 22:51:59,654 INFO L425 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2018-11-06 22:51:59,654 INFO L425 ceAbstractionStarter]: For program point L21-1(lines 21 23) no Hoare annotation was computed. [2018-11-06 22:51:59,654 INFO L421 ceAbstractionStarter]: At program point L21-3(lines 21 23) the Hoare annotation is: (= ULTIMATE.start_main_~k~0 4) [2018-11-06 22:51:59,654 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)) [2018-11-06 22:51:59,654 INFO L425 ceAbstractionStarter]: For program point L17-1(lines 17 19) no Hoare annotation was computed. [2018-11-06 22:51:59,655 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)) [2018-11-06 22:51:59,655 INFO L425 ceAbstractionStarter]: For program point L17-4(lines 17 19) no Hoare annotation was computed. [2018-11-06 22:51:59,655 INFO L425 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2018-11-06 22:51:59,655 INFO L428 ceAbstractionStarter]: At program point L26(lines 10 27) the Hoare annotation is: true [2018-11-06 22:51:59,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:51:59 BoogieIcfgContainer [2018-11-06 22:51:59,669 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-06 22:51:59,670 INFO L168 Benchmark]: Toolchain (without parser) took 2371.70 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 755.0 MB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -710.2 MB). Peak memory consumption was 44.8 MB. Max. memory is 7.1 GB. [2018-11-06 22:51:59,672 INFO L168 Benchmark]: CDTParser took 0.24 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. [2018-11-06 22:51:59,673 INFO L168 Benchmark]: CACSL2BoogieTranslator took 267.27 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. [2018-11-06 22:51:59,674 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.00 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. [2018-11-06 22:51:59,675 INFO L168 Benchmark]: Boogie Preprocessor took 18.98 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. [2018-11-06 22:51:59,675 INFO L168 Benchmark]: RCFGBuilder took 321.74 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 755.0 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -808.0 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. [2018-11-06 22:51:59,676 INFO L168 Benchmark]: TraceAbstraction took 1725.55 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: 87.3 MB). Peak memory consumption was 87.3 MB. Max. memory is 7.1 GB. [2018-11-06 22:51:59,680 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 267.27 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 32.00 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 18.98 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 321.74 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 755.0 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -808.0 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1725.55 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: 87.3 MB). Peak memory consumption was 87.3 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, 1.6s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 0.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.1s HoareAnnotationTime, HoareTripleCheckerStatistics: 89 SDtfs, 8 SDslu, 122 SDs, 0 SdLazy, 37 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s 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, 0.1s SatisfiabilityAnalysisTime, 0.5s 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...