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/eca-rers2012/Problem17_label05_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 20:40:35,741 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 20:40:35,743 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 20:40:35,755 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 20:40:35,755 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 20:40:35,756 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 20:40:35,758 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 20:40:35,760 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 20:40:35,762 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 20:40:35,763 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 20:40:35,764 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 20:40:35,764 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 20:40:35,765 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 20:40:35,766 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 20:40:35,767 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 20:40:35,768 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 20:40:35,769 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 20:40:35,771 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 20:40:35,773 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 20:40:35,775 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 20:40:35,776 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 20:40:35,777 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 20:40:35,780 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-23 20:40:35,780 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-23 20:40:35,781 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-23 20:40:35,782 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-23 20:40:35,783 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-23 20:40:35,784 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-23 20:40:35,784 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-23 20:40:35,788 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-23 20:40:35,790 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-23 20:40:35,791 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-23 20:40:35,796 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-23 20:40:35,820 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 20:40:35,820 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 20:40:35,822 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 20:40:35,822 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-23 20:40:35,823 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-23 20:40:35,823 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-23 20:40:35,823 INFO L133 SettingsManager]: * Use SBE=true [2018-10-23 20:40:35,824 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 20:40:35,824 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 20:40:35,824 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 20:40:35,824 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 20:40:35,824 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 20:40:35,825 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 20:40:35,825 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 20:40:35,825 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 20:40:35,825 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 20:40:35,825 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 20:40:35,826 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 20:40:35,827 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 20:40:35,827 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 20:40:35,827 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 20:40:35,828 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 20:40:35,828 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 20:40:35,828 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-23 20:40:35,828 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 20:40:35,828 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 20:40:35,829 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 20:40:35,829 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 20:40:35,882 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 20:40:35,898 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 20:40:35,901 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 20:40:35,903 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 20:40:35,903 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 20:40:35,904 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label05_true-unreach-call.c [2018-10-23 20:40:35,959 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b6bd1675a/944dbb9d17e74d0382b273f176e68a49/FLAG41cb79075 [2018-10-23 20:40:36,652 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 20:40:36,654 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label05_true-unreach-call.c [2018-10-23 20:40:36,682 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b6bd1675a/944dbb9d17e74d0382b273f176e68a49/FLAG41cb79075 [2018-10-23 20:40:36,704 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b6bd1675a/944dbb9d17e74d0382b273f176e68a49 [2018-10-23 20:40:36,717 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 20:40:36,719 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 20:40:36,723 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 20:40:36,724 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 20:40:36,728 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 20:40:36,729 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:40:36" (1/1) ... [2018-10-23 20:40:36,733 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c850ae3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:40:36, skipping insertion in model container [2018-10-23 20:40:36,733 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:40:36" (1/1) ... [2018-10-23 20:40:36,744 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 20:40:36,871 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 20:40:37,928 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 20:40:37,934 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 20:40:38,378 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 20:40:38,401 INFO L193 MainTranslator]: Completed translation [2018-10-23 20:40:38,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:40:38 WrapperNode [2018-10-23 20:40:38,402 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 20:40:38,404 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 20:40:38,404 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 20:40:38,404 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 20:40:38,414 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:40:38" (1/1) ... [2018-10-23 20:40:38,457 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:40:38" (1/1) ... [2018-10-23 20:40:39,024 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 20:40:39,025 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 20:40:39,025 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 20:40:39,025 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 20:40:39,037 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:40:38" (1/1) ... [2018-10-23 20:40:39,038 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:40:38" (1/1) ... [2018-10-23 20:40:39,074 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:40:38" (1/1) ... [2018-10-23 20:40:39,075 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:40:38" (1/1) ... [2018-10-23 20:40:39,215 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:40:38" (1/1) ... [2018-10-23 20:40:39,256 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:40:38" (1/1) ... [2018-10-23 20:40:39,298 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:40:38" (1/1) ... [2018-10-23 20:40:39,337 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 20:40:39,338 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 20:40:39,338 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 20:40:39,338 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 20:40:39,339 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:40:38" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 20:40:39,401 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-23 20:40:39,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 20:40:39,402 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 20:40:49,466 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 20:40:49,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:40:49 BoogieIcfgContainer [2018-10-23 20:40:49,468 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 20:40:49,469 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 20:40:49,469 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 20:40:49,472 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 20:40:49,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:40:36" (1/3) ... [2018-10-23 20:40:49,473 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38239faa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:40:49, skipping insertion in model container [2018-10-23 20:40:49,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:40:38" (2/3) ... [2018-10-23 20:40:49,474 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38239faa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:40:49, skipping insertion in model container [2018-10-23 20:40:49,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:40:49" (3/3) ... [2018-10-23 20:40:49,476 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label05_true-unreach-call.c [2018-10-23 20:40:49,486 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 20:40:49,496 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 20:40:49,513 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 20:40:49,559 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-23 20:40:49,560 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 20:40:49,560 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 20:40:49,560 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 20:40:49,561 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 20:40:49,561 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 20:40:49,561 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 20:40:49,561 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 20:40:49,561 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 20:40:49,595 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states. [2018-10-23 20:40:49,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-10-23 20:40:49,612 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:40:49,614 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:40:49,616 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:40:49,622 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:40:49,623 INFO L82 PathProgramCache]: Analyzing trace with hash -1515441142, now seen corresponding path program 1 times [2018-10-23 20:40:49,625 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:40:49,625 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:40:49,675 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:40:49,675 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:40:49,675 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:40:49,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:40:50,105 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-10-23 20:40:50,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:40:50,124 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:40:50,125 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:40:50,130 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:40:50,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:40:50,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:40:50,150 INFO L87 Difference]: Start difference. First operand 591 states. Second operand 4 states. [2018-10-23 20:40:59,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:40:59,729 INFO L93 Difference]: Finished difference Result 2126 states and 3956 transitions. [2018-10-23 20:40:59,729 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:40:59,731 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2018-10-23 20:40:59,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:40:59,766 INFO L225 Difference]: With dead ends: 2126 [2018-10-23 20:40:59,766 INFO L226 Difference]: Without dead ends: 1528 [2018-10-23 20:40:59,774 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:40:59,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1528 states. [2018-10-23 20:40:59,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1528 to 1048. [2018-10-23 20:40:59,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1048 states. [2018-10-23 20:40:59,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1048 states to 1048 states and 1826 transitions. [2018-10-23 20:40:59,887 INFO L78 Accepts]: Start accepts. Automaton has 1048 states and 1826 transitions. Word has length 62 [2018-10-23 20:40:59,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:40:59,888 INFO L481 AbstractCegarLoop]: Abstraction has 1048 states and 1826 transitions. [2018-10-23 20:40:59,888 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:40:59,888 INFO L276 IsEmpty]: Start isEmpty. Operand 1048 states and 1826 transitions. [2018-10-23 20:40:59,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-10-23 20:40:59,894 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:40:59,895 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:40:59,897 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:40:59,897 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:40:59,898 INFO L82 PathProgramCache]: Analyzing trace with hash 606696408, now seen corresponding path program 1 times [2018-10-23 20:40:59,898 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:40:59,898 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:40:59,899 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:40:59,899 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:40:59,899 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:40:59,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:41:00,315 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:41:00,316 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:41:00,316 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:41:00,318 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:41:00,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:41:00,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:41:00,318 INFO L87 Difference]: Start difference. First operand 1048 states and 1826 transitions. Second operand 4 states. [2018-10-23 20:41:10,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:41:10,014 INFO L93 Difference]: Finished difference Result 3810 states and 6822 transitions. [2018-10-23 20:41:10,014 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:41:10,014 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 134 [2018-10-23 20:41:10,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:41:10,030 INFO L225 Difference]: With dead ends: 3810 [2018-10-23 20:41:10,031 INFO L226 Difference]: Without dead ends: 2764 [2018-10-23 20:41:10,035 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:41:10,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2764 states. [2018-10-23 20:41:10,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2764 to 2764. [2018-10-23 20:41:10,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2764 states. [2018-10-23 20:41:10,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2764 states to 2764 states and 4043 transitions. [2018-10-23 20:41:10,098 INFO L78 Accepts]: Start accepts. Automaton has 2764 states and 4043 transitions. Word has length 134 [2018-10-23 20:41:10,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:41:10,098 INFO L481 AbstractCegarLoop]: Abstraction has 2764 states and 4043 transitions. [2018-10-23 20:41:10,099 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:41:10,099 INFO L276 IsEmpty]: Start isEmpty. Operand 2764 states and 4043 transitions. [2018-10-23 20:41:10,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2018-10-23 20:41:10,106 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:41:10,106 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:41:10,106 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:41:10,107 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:41:10,107 INFO L82 PathProgramCache]: Analyzing trace with hash -1990175672, now seen corresponding path program 1 times [2018-10-23 20:41:10,107 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:41:10,107 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:41:10,108 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:41:10,108 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:41:10,108 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:41:10,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:41:10,386 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-10-23 20:41:10,387 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:41:10,387 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:41:10,388 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-23 20:41:10,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-23 20:41:10,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 20:41:10,388 INFO L87 Difference]: Start difference. First operand 2764 states and 4043 transitions. Second operand 3 states. [2018-10-23 20:41:16,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:41:16,825 INFO L93 Difference]: Finished difference Result 8084 states and 11872 transitions. [2018-10-23 20:41:16,826 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 20:41:16,826 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 218 [2018-10-23 20:41:16,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:41:16,854 INFO L225 Difference]: With dead ends: 8084 [2018-10-23 20:41:16,854 INFO L226 Difference]: Without dead ends: 5322 [2018-10-23 20:41:16,859 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-23 20:41:16,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5322 states. [2018-10-23 20:41:16,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5322 to 5322. [2018-10-23 20:41:16,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5322 states. [2018-10-23 20:41:16,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5322 states to 5322 states and 7506 transitions. [2018-10-23 20:41:16,960 INFO L78 Accepts]: Start accepts. Automaton has 5322 states and 7506 transitions. Word has length 218 [2018-10-23 20:41:16,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:41:16,961 INFO L481 AbstractCegarLoop]: Abstraction has 5322 states and 7506 transitions. [2018-10-23 20:41:16,961 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-23 20:41:16,961 INFO L276 IsEmpty]: Start isEmpty. Operand 5322 states and 7506 transitions. [2018-10-23 20:41:16,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2018-10-23 20:41:16,968 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:41:16,968 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:41:16,969 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:41:16,969 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:41:16,969 INFO L82 PathProgramCache]: Analyzing trace with hash 1837451638, now seen corresponding path program 1 times [2018-10-23 20:41:16,969 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:41:16,970 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:41:16,973 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:41:16,973 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:41:16,973 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:41:17,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:41:17,370 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 195 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:41:17,371 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:41:17,372 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-23 20:41:17,372 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:41:17,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:41:17,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:41:17,373 INFO L87 Difference]: Start difference. First operand 5322 states and 7506 transitions. Second operand 4 states. [2018-10-23 20:41:22,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:41:22,224 INFO L93 Difference]: Finished difference Result 11493 states and 16259 transitions. [2018-10-23 20:41:22,225 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:41:22,225 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 225 [2018-10-23 20:41:22,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:41:22,254 INFO L225 Difference]: With dead ends: 11493 [2018-10-23 20:41:22,254 INFO L226 Difference]: Without dead ends: 6173 [2018-10-23 20:41:22,262 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:41:22,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6173 states. [2018-10-23 20:41:22,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6173 to 6173. [2018-10-23 20:41:22,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6173 states. [2018-10-23 20:41:22,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6173 states to 6173 states and 7808 transitions. [2018-10-23 20:41:22,383 INFO L78 Accepts]: Start accepts. Automaton has 6173 states and 7808 transitions. Word has length 225 [2018-10-23 20:41:22,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:41:22,384 INFO L481 AbstractCegarLoop]: Abstraction has 6173 states and 7808 transitions. [2018-10-23 20:41:22,384 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:41:22,384 INFO L276 IsEmpty]: Start isEmpty. Operand 6173 states and 7808 transitions. [2018-10-23 20:41:22,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2018-10-23 20:41:22,391 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:41:22,391 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:41:22,392 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:41:22,392 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:41:22,392 INFO L82 PathProgramCache]: Analyzing trace with hash -241982439, now seen corresponding path program 1 times [2018-10-23 20:41:22,392 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:41:22,392 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:41:22,393 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:41:22,393 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:41:22,394 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:41:22,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:41:22,989 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 260 proven. 71 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2018-10-23 20:41:22,989 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:41:22,989 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 20:41:23,011 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:41:23,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:41:23,149 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:41:23,502 INFO L134 CoverageAnalysis]: Checked inductivity of 391 backedges. 260 proven. 71 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2018-10-23 20:41:23,537 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 20:41:23,538 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3] total 4 [2018-10-23 20:41:23,539 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-23 20:41:23,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-23 20:41:23,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:41:23,539 INFO L87 Difference]: Start difference. First operand 6173 states and 7808 transitions. Second operand 5 states. [2018-10-23 20:41:34,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:41:34,816 INFO L93 Difference]: Finished difference Result 21329 states and 27065 transitions. [2018-10-23 20:41:34,817 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-23 20:41:34,817 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 289 [2018-10-23 20:41:34,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:41:34,869 INFO L225 Difference]: With dead ends: 21329 [2018-10-23 20:41:34,869 INFO L226 Difference]: Without dead ends: 13388 [2018-10-23 20:41:34,881 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 287 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-23 20:41:34,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13388 states. [2018-10-23 20:41:35,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13388 to 11670. [2018-10-23 20:41:35,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11670 states. [2018-10-23 20:41:35,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11670 states to 11670 states and 13334 transitions. [2018-10-23 20:41:35,124 INFO L78 Accepts]: Start accepts. Automaton has 11670 states and 13334 transitions. Word has length 289 [2018-10-23 20:41:35,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:41:35,125 INFO L481 AbstractCegarLoop]: Abstraction has 11670 states and 13334 transitions. [2018-10-23 20:41:35,125 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-23 20:41:35,125 INFO L276 IsEmpty]: Start isEmpty. Operand 11670 states and 13334 transitions. [2018-10-23 20:41:35,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2018-10-23 20:41:35,133 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:41:35,134 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:41:35,134 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:41:35,134 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:41:35,135 INFO L82 PathProgramCache]: Analyzing trace with hash -1305517648, now seen corresponding path program 1 times [2018-10-23 20:41:35,135 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:41:35,135 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:41:35,136 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:41:35,136 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:41:35,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:41:35,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:41:35,794 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 14 [2018-10-23 20:41:35,993 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 264 proven. 83 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2018-10-23 20:41:35,993 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:41:35,993 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 20:41:36,140 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:41:36,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:41:36,235 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:41:36,923 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 264 proven. 83 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2018-10-23 20:41:36,955 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 20:41:36,956 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 3] total 7 [2018-10-23 20:41:36,957 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-23 20:41:36,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-23 20:41:36,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-10-23 20:41:36,957 INFO L87 Difference]: Start difference. First operand 11670 states and 13334 transitions. Second operand 8 states. [2018-10-23 20:41:47,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:41:47,389 INFO L93 Difference]: Finished difference Result 24195 states and 27562 transitions. [2018-10-23 20:41:47,389 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-23 20:41:47,390 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 325 [2018-10-23 20:41:47,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:41:47,411 INFO L225 Difference]: With dead ends: 24195 [2018-10-23 20:41:47,411 INFO L226 Difference]: Without dead ends: 12093 [2018-10-23 20:41:47,425 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 331 GetRequests, 323 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2018-10-23 20:41:47,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12093 states. [2018-10-23 20:41:47,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12093 to 12092. [2018-10-23 20:41:47,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12092 states. [2018-10-23 20:41:47,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12092 states to 12092 states and 13765 transitions. [2018-10-23 20:41:47,587 INFO L78 Accepts]: Start accepts. Automaton has 12092 states and 13765 transitions. Word has length 325 [2018-10-23 20:41:47,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:41:47,588 INFO L481 AbstractCegarLoop]: Abstraction has 12092 states and 13765 transitions. [2018-10-23 20:41:47,588 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-23 20:41:47,588 INFO L276 IsEmpty]: Start isEmpty. Operand 12092 states and 13765 transitions. [2018-10-23 20:41:47,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 330 [2018-10-23 20:41:47,594 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:41:47,595 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:41:47,596 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:41:47,596 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:41:47,596 INFO L82 PathProgramCache]: Analyzing trace with hash -1290586109, now seen corresponding path program 1 times [2018-10-23 20:41:47,596 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:41:47,596 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:41:47,600 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:41:47,601 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:41:47,601 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:41:47,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:41:48,750 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 5 [2018-10-23 20:41:49,080 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 0 proven. 427 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:41:49,081 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:41:49,082 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 [2018-10-23 20:41:49,094 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:41:49,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:41:49,188 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:44:07,010 WARN L179 SmtUtils]: Spent 2.15 m on a formula simplification. DAG size of input: 1114 DAG size of output: 80 [2018-10-23 20:44:11,705 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 179 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2018-10-23 20:44:11,735 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 20:44:11,735 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 9 [2018-10-23 20:44:11,736 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-10-23 20:44:11,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-10-23 20:44:11,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=51, Unknown=3, NotChecked=0, Total=72 [2018-10-23 20:44:11,737 INFO L87 Difference]: Start difference. First operand 12092 states and 13765 transitions. Second operand 9 states. [2018-10-23 20:44:18,763 WARN L179 SmtUtils]: Spent 2.74 s on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2018-10-23 20:44:20,529 WARN L179 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 60 Received shutdown request... [2018-10-23 20:44:55,269 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-23 20:44:55,269 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 20:44:55,275 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 20:44:55,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 08:44:55 BoogieIcfgContainer [2018-10-23 20:44:55,276 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 20:44:55,276 INFO L168 Benchmark]: Toolchain (without parser) took 258558.57 ms. Allocated memory was 1.5 GB in the beginning and 3.1 GB in the end (delta: 1.6 GB). Free memory was 1.4 GB in the beginning and 2.0 GB in the end (delta: -665.5 MB). Peak memory consumption was 965.6 MB. Max. memory is 7.1 GB. [2018-10-23 20:44:55,277 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 20:44:55,278 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1679.57 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. [2018-10-23 20:44:55,279 INFO L168 Benchmark]: Boogie Procedure Inliner took 621.08 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 782.8 MB). Free memory was 1.2 GB in the beginning and 2.1 GB in the end (delta: -913.9 MB). Peak memory consumption was 56.0 MB. Max. memory is 7.1 GB. [2018-10-23 20:44:55,280 INFO L168 Benchmark]: Boogie Preprocessor took 312.38 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 59.2 MB). Peak memory consumption was 59.2 MB. Max. memory is 7.1 GB. [2018-10-23 20:44:55,280 INFO L168 Benchmark]: RCFGBuilder took 10130.08 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.6 GB in the end (delta: 461.8 MB). Peak memory consumption was 461.8 MB. Max. memory is 7.1 GB. [2018-10-23 20:44:55,282 INFO L168 Benchmark]: TraceAbstraction took 245806.94 ms. Allocated memory was 2.3 GB in the beginning and 3.1 GB in the end (delta: 848.3 MB). Free memory was 1.6 GB in the beginning and 2.0 GB in the end (delta: -410.0 MB). Peak memory consumption was 438.3 MB. Max. memory is 7.1 GB. [2018-10-23 20:44:55,287 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1679.57 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 621.08 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 782.8 MB). Free memory was 1.2 GB in the beginning and 2.1 GB in the end (delta: -913.9 MB). Peak memory consumption was 56.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 312.38 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 59.2 MB). Peak memory consumption was 59.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 10130.08 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.6 GB in the end (delta: 461.8 MB). Peak memory consumption was 461.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 245806.94 ms. Allocated memory was 2.3 GB in the beginning and 3.1 GB in the end (delta: 848.3 MB). Free memory was 1.6 GB in the beginning and 2.0 GB in the end (delta: -410.0 MB). Peak memory consumption was 438.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 191]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 191). Cancelled while BasicCegarLoop was constructing difference of abstraction (12092states) and FLOYD_HOARE automaton (currently 14 states, 9 states before enhancement),while ReachableStatesComputation was computing reachable states (19505 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 591 locations, 1 error locations. TIMEOUT Result, 245.7s OverallTime, 7 OverallIterations, 4 TraceHistogramMax, 96.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 2452 SDtfs, 11411 SDslu, 1514 SDs, 0 SdLazy, 31810 SolverSat, 4362 SolverUnsat, 10 SolverUnknown, 0 SolverNotchecked, 84.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 987 GetRequests, 892 SyntacticMatches, 64 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 147.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=12092occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.7s AutomataMinimizationTime, 6 MinimizatonAttempts, 2199 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 146.8s InterpolantComputationTime, 2525 NumberOfCodeBlocks, 2525 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 2515 ConstructedInterpolants, 166 QuantifiedInterpolants, 7341524 SizeOfPredicates, 3 NumberOfNonLiveVariables, 1284 ConjunctsInSsa, 14 ConjunctsInUnsatCore, 10 InterpolantComputations, 5 PerfectInterpolantSequences, 2159/2894 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown