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/loops/sum01_bug02_false-unreach-call_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-8c3fbe1 [2018-10-22 15:36:04,810 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-22 15:36:04,812 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-22 15:36:04,823 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-22 15:36:04,824 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-22 15:36:04,825 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-22 15:36:04,826 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-22 15:36:04,828 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-22 15:36:04,830 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-22 15:36:04,830 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-22 15:36:04,832 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-22 15:36:04,832 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-22 15:36:04,833 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-22 15:36:04,834 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-22 15:36:04,835 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-22 15:36:04,836 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-22 15:36:04,837 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-22 15:36:04,839 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-22 15:36:04,841 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-22 15:36:04,842 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-22 15:36:04,844 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-22 15:36:04,845 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-22 15:36:04,847 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-22 15:36:04,856 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 [2018-10-22 15:36:04,881 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-22 15:36:04,881 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-22 15:36:04,882 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-22 15:36:04,882 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-22 15:36:04,883 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-22 15:36:04,883 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-22 15:36:04,883 INFO L133 SettingsManager]: * Use SBE=true [2018-10-22 15:36:04,883 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-22 15:36:04,884 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-22 15:36:04,884 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-22 15:36:04,884 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-22 15:36:04,884 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-22 15:36:04,884 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-22 15:36:04,884 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-22 15:36:04,885 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-22 15:36:04,885 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-22 15:36:04,885 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-22 15:36:04,885 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-22 15:36:04,886 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-22 15:36:04,886 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-22 15:36:04,886 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-22 15:36:04,886 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-22 15:36:04,886 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-22 15:36:04,886 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-22 15:36:04,887 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-22 15:36:04,887 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-22 15:36:04,887 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-22 15:36:04,887 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-22 15:36:04,938 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-22 15:36:04,951 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-22 15:36:04,955 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-22 15:36:04,957 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-22 15:36:04,957 INFO L276 PluginConnector]: CDTParser initialized [2018-10-22 15:36:04,958 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/loops/sum01_bug02_false-unreach-call_true-termination.i [2018-10-22 15:36:05,018 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/81ff11bce/a86c52fb3713414eba886f520d06ef33/FLAG0a9fc85d8 [2018-10-22 15:36:05,515 INFO L298 CDTParser]: Found 1 translation units. [2018-10-22 15:36:05,516 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/sum01_bug02_false-unreach-call_true-termination.i [2018-10-22 15:36:05,528 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/81ff11bce/a86c52fb3713414eba886f520d06ef33/FLAG0a9fc85d8 [2018-10-22 15:36:05,542 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/81ff11bce/a86c52fb3713414eba886f520d06ef33 [2018-10-22 15:36:05,552 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-22 15:36:05,553 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-22 15:36:05,554 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-22 15:36:05,555 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-22 15:36:05,559 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-22 15:36:05,560 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 03:36:05" (1/1) ... [2018-10-22 15:36:05,563 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cc2c518 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:36:05, skipping insertion in model container [2018-10-22 15:36:05,563 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 03:36:05" (1/1) ... [2018-10-22 15:36:05,573 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-22 15:36:05,592 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-22 15:36:05,758 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-22 15:36:05,761 INFO L189 MainTranslator]: Completed pre-run [2018-10-22 15:36:05,777 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-22 15:36:05,793 INFO L193 MainTranslator]: Completed translation [2018-10-22 15:36:05,793 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:36:05 WrapperNode [2018-10-22 15:36:05,794 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-22 15:36:05,795 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-22 15:36:05,795 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-22 15:36:05,795 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-22 15:36:05,804 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:36:05" (1/1) ... [2018-10-22 15:36:05,810 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:36:05" (1/1) ... [2018-10-22 15:36:05,831 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-22 15:36:05,831 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-22 15:36:05,831 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-22 15:36:05,831 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-22 15:36:05,841 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:36:05" (1/1) ... [2018-10-22 15:36:05,842 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:36:05" (1/1) ... [2018-10-22 15:36:05,843 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:36:05" (1/1) ... [2018-10-22 15:36:05,843 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:36:05" (1/1) ... [2018-10-22 15:36:05,844 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:36:05" (1/1) ... [2018-10-22 15:36:05,850 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:36:05" (1/1) ... [2018-10-22 15:36:05,851 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:36:05" (1/1) ... [2018-10-22 15:36:05,852 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-22 15:36:05,853 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-22 15:36:05,853 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-22 15:36:05,853 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-22 15:36:05,854 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:36:05" (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 [2018-10-22 15:36:05,996 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-22 15:36:05,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-22 15:36:06,240 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-22 15:36:06,241 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 03:36:06 BoogieIcfgContainer [2018-10-22 15:36:06,241 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-22 15:36:06,242 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-22 15:36:06,242 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-22 15:36:06,245 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-22 15:36:06,246 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 03:36:05" (1/3) ... [2018-10-22 15:36:06,247 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1544b6d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 03:36:06, skipping insertion in model container [2018-10-22 15:36:06,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 03:36:05" (2/3) ... [2018-10-22 15:36:06,247 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1544b6d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 03:36:06, skipping insertion in model container [2018-10-22 15:36:06,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 03:36:06" (3/3) ... [2018-10-22 15:36:06,249 INFO L112 eAbstractionObserver]: Analyzing ICFG sum01_bug02_false-unreach-call_true-termination.i [2018-10-22 15:36:06,262 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-22 15:36:06,273 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-22 15:36:06,300 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-22 15:36:06,341 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-10-22 15:36:06,341 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-22 15:36:06,342 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-22 15:36:06,342 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-22 15:36:06,342 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-22 15:36:06,342 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-22 15:36:06,342 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-22 15:36:06,343 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-22 15:36:06,343 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-22 15:36:06,360 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2018-10-22 15:36:06,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2018-10-22 15:36:06,368 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:36:06,369 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2018-10-22 15:36:06,371 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:36:06,377 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:36:06,378 INFO L82 PathProgramCache]: Analyzing trace with hash 890030055, now seen corresponding path program 1 times [2018-10-22 15:36:06,380 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:36:06,381 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:36:06,466 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:36:06,466 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:36:06,466 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:36:06,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:36:06,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:36:06,536 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-22 15:36:06,536 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-22 15:36:06,540 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-10-22 15:36:06,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-10-22 15:36:06,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-10-22 15:36:06,555 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 2 states. [2018-10-22 15:36:06,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:36:06,570 INFO L93 Difference]: Finished difference Result 23 states and 26 transitions. [2018-10-22 15:36:06,570 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-22 15:36:06,571 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2018-10-22 15:36:06,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:36:06,581 INFO L225 Difference]: With dead ends: 23 [2018-10-22 15:36:06,582 INFO L226 Difference]: Without dead ends: 11 [2018-10-22 15:36:06,586 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 [2018-10-22 15:36:06,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2018-10-22 15:36:06,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2018-10-22 15:36:06,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2018-10-22 15:36:06,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 12 transitions. [2018-10-22 15:36:06,624 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 12 transitions. Word has length 6 [2018-10-22 15:36:06,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:36:06,625 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 12 transitions. [2018-10-22 15:36:06,625 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-10-22 15:36:06,625 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 12 transitions. [2018-10-22 15:36:06,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2018-10-22 15:36:06,626 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:36:06,626 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2018-10-22 15:36:06,627 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:36:06,627 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:36:06,627 INFO L82 PathProgramCache]: Analyzing trace with hash 1805901812, now seen corresponding path program 1 times [2018-10-22 15:36:06,628 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:36:06,628 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:36:06,629 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:36:06,629 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:36:06,629 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:36:06,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:36:06,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:36:06,834 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-22 15:36:06,834 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-22 15:36:06,836 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-22 15:36:06,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-22 15:36:06,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-10-22 15:36:06,837 INFO L87 Difference]: Start difference. First operand 11 states and 12 transitions. Second operand 4 states. [2018-10-22 15:36:07,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:36:07,045 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2018-10-22 15:36:07,046 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-22 15:36:07,046 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2018-10-22 15:36:07,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:36:07,047 INFO L225 Difference]: With dead ends: 20 [2018-10-22 15:36:07,047 INFO L226 Difference]: Without dead ends: 16 [2018-10-22 15:36:07,048 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-22 15:36:07,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2018-10-22 15:36:07,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2018-10-22 15:36:07,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2018-10-22 15:36:07,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2018-10-22 15:36:07,053 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 7 [2018-10-22 15:36:07,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:36:07,053 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2018-10-22 15:36:07,054 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-22 15:36:07,054 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2018-10-22 15:36:07,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2018-10-22 15:36:07,054 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:36:07,055 INFO L375 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 15:36:07,055 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:36:07,055 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:36:07,055 INFO L82 PathProgramCache]: Analyzing trace with hash -1175427889, now seen corresponding path program 1 times [2018-10-22 15:36:07,056 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:36:07,056 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:36:07,057 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:36:07,057 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:36:07,057 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:36:07,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:36:07,477 WARN L179 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 14 [2018-10-22 15:36:07,689 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 9 [2018-10-22 15:36:07,717 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:36:07,717 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 15:36:07,718 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 [2018-10-22 15:36:07,729 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:36:07,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:36:07,767 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-22 15:36:08,202 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:36:08,224 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-22 15:36:08,224 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2018-10-22 15:36:08,225 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-22 15:36:08,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-22 15:36:08,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2018-10-22 15:36:08,226 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 13 states. [2018-10-22 15:36:08,933 WARN L179 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 16 DAG size of output: 15 [2018-10-22 15:36:09,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:36:09,034 INFO L93 Difference]: Finished difference Result 41 states and 47 transitions. [2018-10-22 15:36:09,034 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-22 15:36:09,035 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 12 [2018-10-22 15:36:09,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:36:09,038 INFO L225 Difference]: With dead ends: 41 [2018-10-22 15:36:09,039 INFO L226 Difference]: Without dead ends: 35 [2018-10-22 15:36:09,040 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2018-10-22 15:36:09,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-10-22 15:36:09,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 28. [2018-10-22 15:36:09,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2018-10-22 15:36:09,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2018-10-22 15:36:09,049 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 12 [2018-10-22 15:36:09,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:36:09,049 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2018-10-22 15:36:09,049 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-10-22 15:36:09,049 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2018-10-22 15:36:09,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-22 15:36:09,050 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:36:09,051 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 15:36:09,051 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:36:09,051 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:36:09,051 INFO L82 PathProgramCache]: Analyzing trace with hash 227655126, now seen corresponding path program 1 times [2018-10-22 15:36:09,052 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:36:09,052 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:36:09,053 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:36:09,053 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:36:09,053 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:36:09,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:36:09,098 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-22 15:36:09,099 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-22 15:36:09,099 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-22 15:36:09,100 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-22 15:36:09,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-22 15:36:09,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-22 15:36:09,101 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 3 states. [2018-10-22 15:36:09,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:36:09,124 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2018-10-22 15:36:09,125 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-22 15:36:09,125 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2018-10-22 15:36:09,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:36:09,126 INFO L225 Difference]: With dead ends: 37 [2018-10-22 15:36:09,126 INFO L226 Difference]: Without dead ends: 23 [2018-10-22 15:36:09,127 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 [2018-10-22 15:36:09,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-10-22 15:36:09,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-10-22 15:36:09,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-10-22 15:36:09,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2018-10-22 15:36:09,132 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 17 [2018-10-22 15:36:09,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:36:09,132 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2018-10-22 15:36:09,132 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-22 15:36:09,132 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2018-10-22 15:36:09,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-10-22 15:36:09,133 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:36:09,133 INFO L375 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 15:36:09,134 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:36:09,134 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:36:09,134 INFO L82 PathProgramCache]: Analyzing trace with hash 5114514, now seen corresponding path program 2 times [2018-10-22 15:36:09,134 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:36:09,134 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:36:09,135 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:36:09,135 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-22 15:36:09,136 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:36:09,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:36:09,209 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:36:09,209 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 15:36:09,209 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 [2018-10-22 15:36:09,220 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-22 15:36:09,238 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-22 15:36:09,238 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-22 15:36:09,240 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-22 15:36:09,295 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:36:09,316 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-22 15:36:09,316 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2018-10-22 15:36:09,317 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-22 15:36:09,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-22 15:36:09,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-10-22 15:36:09,318 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 8 states. [2018-10-22 15:36:09,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:36:09,427 INFO L93 Difference]: Finished difference Result 32 states and 35 transitions. [2018-10-22 15:36:09,428 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-22 15:36:09,429 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2018-10-22 15:36:09,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:36:09,430 INFO L225 Difference]: With dead ends: 32 [2018-10-22 15:36:09,430 INFO L226 Difference]: Without dead ends: 23 [2018-10-22 15:36:09,431 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-10-22 15:36:09,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2018-10-22 15:36:09,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-10-22 15:36:09,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-10-22 15:36:09,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2018-10-22 15:36:09,436 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 17 [2018-10-22 15:36:09,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:36:09,436 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2018-10-22 15:36:09,436 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-22 15:36:09,436 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2018-10-22 15:36:09,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-10-22 15:36:09,437 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:36:09,437 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 15:36:09,438 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:36:09,438 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:36:09,438 INFO L82 PathProgramCache]: Analyzing trace with hash 728398253, now seen corresponding path program 3 times [2018-10-22 15:36:09,438 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:36:09,438 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:36:09,439 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:36:09,440 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-22 15:36:09,440 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:36:09,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:36:09,550 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:36:09,551 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 15:36:09,551 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-22 15:36:09,566 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-10-22 15:36:09,589 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-10-22 15:36:09,590 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-22 15:36:09,593 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-22 15:36:09,736 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:36:09,761 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-22 15:36:09,761 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2018-10-22 15:36:09,762 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-22 15:36:09,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-22 15:36:09,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=76, Unknown=0, NotChecked=0, Total=132 [2018-10-22 15:36:09,763 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 12 states. [2018-10-22 15:36:09,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:36:09,849 INFO L93 Difference]: Finished difference Result 34 states and 37 transitions. [2018-10-22 15:36:09,849 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-22 15:36:09,849 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 22 [2018-10-22 15:36:09,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:36:09,851 INFO L225 Difference]: With dead ends: 34 [2018-10-22 15:36:09,851 INFO L226 Difference]: Without dead ends: 25 [2018-10-22 15:36:09,852 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=76, Unknown=0, NotChecked=0, Total=132 [2018-10-22 15:36:09,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2018-10-22 15:36:09,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2018-10-22 15:36:09,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2018-10-22 15:36:09,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2018-10-22 15:36:09,857 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 22 [2018-10-22 15:36:09,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:36:09,857 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2018-10-22 15:36:09,857 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-22 15:36:09,858 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2018-10-22 15:36:09,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-10-22 15:36:09,859 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:36:09,859 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2018-10-22 15:36:09,861 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:36:09,861 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:36:09,861 INFO L82 PathProgramCache]: Analyzing trace with hash 1537744879, now seen corresponding path program 2 times [2018-10-22 15:36:09,861 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:36:09,862 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:36:09,862 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:36:09,863 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-22 15:36:09,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:36:09,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:36:10,158 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-10-22 15:36:10,159 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 15:36:10,159 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-22 15:36:10,170 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-10-22 15:36:10,192 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-10-22 15:36:10,192 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-22 15:36:10,196 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-22 15:36:10,579 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:36:10,600 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-22 15:36:10,600 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12] total 18 [2018-10-22 15:36:10,601 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-10-22 15:36:10,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-10-22 15:36:10,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2018-10-22 15:36:10,602 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 18 states. [2018-10-22 15:36:11,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:36:11,628 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2018-10-22 15:36:11,633 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-10-22 15:36:11,633 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 22 [2018-10-22 15:36:11,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:36:11,634 INFO L225 Difference]: With dead ends: 44 [2018-10-22 15:36:11,634 INFO L226 Difference]: Without dead ends: 38 [2018-10-22 15:36:11,635 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=172, Invalid=884, Unknown=0, NotChecked=0, Total=1056 [2018-10-22 15:36:11,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-10-22 15:36:11,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 29. [2018-10-22 15:36:11,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-10-22 15:36:11,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2018-10-22 15:36:11,645 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 22 [2018-10-22 15:36:11,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:36:11,646 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2018-10-22 15:36:11,646 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-10-22 15:36:11,646 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2018-10-22 15:36:11,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-10-22 15:36:11,647 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:36:11,647 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 15:36:11,647 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:36:11,650 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:36:11,650 INFO L82 PathProgramCache]: Analyzing trace with hash 701383538, now seen corresponding path program 4 times [2018-10-22 15:36:11,650 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:36:11,650 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:36:11,651 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:36:11,652 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-22 15:36:11,652 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:36:11,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:36:12,022 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 14 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:36:12,023 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 15:36:12,023 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-22 15:36:12,031 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-10-22 15:36:12,043 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-10-22 15:36:12,043 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-22 15:36:12,045 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-22 15:36:12,193 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 14 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:36:12,213 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-22 15:36:12,213 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2018-10-22 15:36:12,214 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-22 15:36:12,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-22 15:36:12,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=141, Unknown=0, NotChecked=0, Total=240 [2018-10-22 15:36:12,215 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand 16 states. [2018-10-22 15:36:12,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:36:12,308 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2018-10-22 15:36:12,310 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-22 15:36:12,310 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 27 [2018-10-22 15:36:12,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:36:12,311 INFO L225 Difference]: With dead ends: 44 [2018-10-22 15:36:12,311 INFO L226 Difference]: Without dead ends: 35 [2018-10-22 15:36:12,312 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=99, Invalid=141, Unknown=0, NotChecked=0, Total=240 [2018-10-22 15:36:12,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2018-10-22 15:36:12,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2018-10-22 15:36:12,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-10-22 15:36:12,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2018-10-22 15:36:12,319 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 27 [2018-10-22 15:36:12,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:36:12,319 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2018-10-22 15:36:12,319 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-10-22 15:36:12,319 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2018-10-22 15:36:12,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-10-22 15:36:12,320 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:36:12,321 INFO L375 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 15:36:12,321 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:36:12,321 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:36:12,321 INFO L82 PathProgramCache]: Analyzing trace with hash -7680819, now seen corresponding path program 5 times [2018-10-22 15:36:12,321 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:36:12,322 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:36:12,322 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:36:12,323 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-22 15:36:12,323 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:36:12,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-22 15:36:12,492 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 18 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:36:12,493 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-22 15:36:12,493 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-22 15:36:12,502 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-10-22 15:36:12,524 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2018-10-22 15:36:12,525 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-10-22 15:36:12,527 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-22 15:36:12,697 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 18 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-22 15:36:12,727 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-22 15:36:12,728 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 20 [2018-10-22 15:36:12,728 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-10-22 15:36:12,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-10-22 15:36:12,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=226, Unknown=0, NotChecked=0, Total=380 [2018-10-22 15:36:12,729 INFO L87 Difference]: Start difference. First operand 34 states and 36 transitions. Second operand 20 states. [2018-10-22 15:36:12,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-22 15:36:12,853 INFO L93 Difference]: Finished difference Result 50 states and 54 transitions. [2018-10-22 15:36:12,854 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-22 15:36:12,854 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 32 [2018-10-22 15:36:12,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-22 15:36:12,855 INFO L225 Difference]: With dead ends: 50 [2018-10-22 15:36:12,855 INFO L226 Difference]: Without dead ends: 41 [2018-10-22 15:36:12,856 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=154, Invalid=226, Unknown=0, NotChecked=0, Total=380 [2018-10-22 15:36:12,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2018-10-22 15:36:12,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2018-10-22 15:36:12,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-10-22 15:36:12,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2018-10-22 15:36:12,861 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 32 [2018-10-22 15:36:12,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-22 15:36:12,862 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2018-10-22 15:36:12,862 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-10-22 15:36:12,862 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2018-10-22 15:36:12,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2018-10-22 15:36:12,863 INFO L367 BasicCegarLoop]: Found error trace [2018-10-22 15:36:12,863 INFO L375 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 5, 1, 1, 1, 1, 1, 1, 1] [2018-10-22 15:36:12,864 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-22 15:36:12,864 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-22 15:36:12,864 INFO L82 PathProgramCache]: Analyzing trace with hash -1031478190, now seen corresponding path program 6 times [2018-10-22 15:36:12,864 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-22 15:36:12,864 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-22 15:36:12,865 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:36:12,865 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-22 15:36:12,866 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-22 15:36:12,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-22 15:36:12,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-22 15:36:12,919 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-10-22 15:36:12,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 03:36:12 BoogieIcfgContainer [2018-10-22 15:36:12,954 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-22 15:36:12,955 INFO L168 Benchmark]: Toolchain (without parser) took 7402.38 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 724.0 MB). Free memory was 1.4 GB in the beginning and 1.8 GB in the end (delta: -373.3 MB). Peak memory consumption was 350.7 MB. Max. memory is 7.1 GB. [2018-10-22 15:36:12,956 INFO L168 Benchmark]: CDTParser took 0.28 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. [2018-10-22 15:36:12,957 INFO L168 Benchmark]: CACSL2BoogieTranslator took 239.72 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. [2018-10-22 15:36:12,957 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.29 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. [2018-10-22 15:36:12,958 INFO L168 Benchmark]: Boogie Preprocessor took 21.27 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. [2018-10-22 15:36:12,959 INFO L168 Benchmark]: RCFGBuilder took 388.19 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 724.0 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -770.0 MB). Peak memory consumption was 26.8 MB. Max. memory is 7.1 GB. [2018-10-22 15:36:12,959 INFO L168 Benchmark]: TraceAbstraction took 6712.06 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 1.8 GB in the end (delta: 386.2 MB). Peak memory consumption was 386.2 MB. Max. memory is 7.1 GB. [2018-10-22 15:36:12,964 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 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. * CACSL2BoogieTranslator took 239.72 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 36.29 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 21.27 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 388.19 ms. Allocated memory was 1.5 GB in the beginning and 2.2 GB in the end (delta: 724.0 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -770.0 MB). Peak memory consumption was 26.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6712.06 ms. Allocated memory is still 2.2 GB. Free memory was 2.2 GB in the beginning and 1.8 GB in the end (delta: 386.2 MB). Peak memory consumption was 386.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L12] int i, j=10, n=__VERIFIER_nondet_uint(), sn=0; [L12] int i, j=10, n=__VERIFIER_nondet_uint(), sn=0; [L13] i=1 [L13] COND TRUE i<=n [L14] COND TRUE i