java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label45_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-06 22:03:34,719 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-06 22:03:34,721 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-06 22:03:34,739 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-06 22:03:34,739 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-06 22:03:34,742 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-06 22:03:34,743 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-06 22:03:34,745 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-06 22:03:34,748 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-06 22:03:34,749 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-06 22:03:34,750 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-06 22:03:34,750 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-06 22:03:34,751 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-06 22:03:34,752 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-06 22:03:34,754 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-06 22:03:34,755 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-06 22:03:34,755 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-06 22:03:34,757 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-06 22:03:34,759 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-06 22:03:34,761 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-06 22:03:34,764 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-06 22:03:34,765 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-06 22:03:34,767 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-06 22:03:34,768 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-06 22:03:34,768 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-06 22:03:34,769 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-06 22:03:34,770 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-06 22:03:34,770 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-06 22:03:34,771 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-06 22:03:34,772 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-06 22:03:34,772 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-06 22:03:34,773 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-06 22:03:34,773 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-06 22:03:34,773 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-06 22:03:34,774 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-06 22:03:34,775 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-06 22:03:34,775 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-11-06 22:03:34,790 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-06 22:03:34,790 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-06 22:03:34,791 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-06 22:03:34,792 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-06 22:03:34,792 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-06 22:03:34,792 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-06 22:03:34,793 INFO L133 SettingsManager]: * Use SBE=true [2018-11-06 22:03:34,793 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-06 22:03:34,793 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-06 22:03:34,793 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-06 22:03:34,793 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-06 22:03:34,794 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-06 22:03:34,794 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-06 22:03:34,794 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-06 22:03:34,794 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-06 22:03:34,795 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-06 22:03:34,795 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-06 22:03:34,795 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-06 22:03:34,795 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-06 22:03:34,795 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-06 22:03:34,796 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-06 22:03:34,796 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-06 22:03:34,796 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-06 22:03:34,796 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-06 22:03:34,796 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-06 22:03:34,797 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-06 22:03:34,797 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-06 22:03:34,797 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-06 22:03:34,863 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-06 22:03:34,883 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-06 22:03:34,887 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-06 22:03:34,888 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-06 22:03:34,889 INFO L276 PluginConnector]: CDTParser initialized [2018-11-06 22:03:34,890 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label45_true-unreach-call.c [2018-11-06 22:03:34,953 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd59d1912/0e8b112a27f140749d7cf7f2f4b72b06/FLAG6e8c6cb39 [2018-11-06 22:03:35,823 INFO L298 CDTParser]: Found 1 translation units. [2018-11-06 22:03:35,824 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label45_true-unreach-call.c [2018-11-06 22:03:35,867 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd59d1912/0e8b112a27f140749d7cf7f2f4b72b06/FLAG6e8c6cb39 [2018-11-06 22:03:35,883 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd59d1912/0e8b112a27f140749d7cf7f2f4b72b06 [2018-11-06 22:03:35,894 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-06 22:03:35,896 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-06 22:03:35,897 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-06 22:03:35,897 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-06 22:03:35,901 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-06 22:03:35,903 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:03:35" (1/1) ... [2018-11-06 22:03:35,906 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41c2de68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:35, skipping insertion in model container [2018-11-06 22:03:35,907 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:03:35" (1/1) ... [2018-11-06 22:03:35,919 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-06 22:03:36,178 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-06 22:03:38,084 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 22:03:38,089 INFO L189 MainTranslator]: Completed pre-run [2018-11-06 22:03:39,211 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 22:03:39,270 INFO L193 MainTranslator]: Completed translation [2018-11-06 22:03:39,271 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:39 WrapperNode [2018-11-06 22:03:39,271 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-06 22:03:39,272 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-06 22:03:39,272 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-06 22:03:39,272 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-06 22:03:39,284 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:39" (1/1) ... [2018-11-06 22:03:39,823 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:39" (1/1) ... [2018-11-06 22:03:40,411 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-06 22:03:40,411 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-06 22:03:40,411 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-06 22:03:40,411 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-06 22:03:40,425 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:39" (1/1) ... [2018-11-06 22:03:40,425 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:39" (1/1) ... [2018-11-06 22:03:40,547 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:39" (1/1) ... [2018-11-06 22:03:40,548 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:39" (1/1) ... [2018-11-06 22:03:40,840 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:39" (1/1) ... [2018-11-06 22:03:40,922 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:39" (1/1) ... [2018-11-06 22:03:41,041 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:39" (1/1) ... [2018-11-06 22:03:41,273 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-06 22:03:41,274 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-06 22:03:41,274 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-06 22:03:41,274 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-06 22:03:41,275 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:39" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-06 22:03:41,348 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-06 22:03:41,348 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-06 22:03:41,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-06 22:03:58,921 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-06 22:03:58,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:03:58 BoogieIcfgContainer [2018-11-06 22:03:58,921 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-06 22:03:58,922 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-06 22:03:58,922 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-06 22:03:58,925 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-06 22:03:58,926 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:03:35" (1/3) ... [2018-11-06 22:03:58,926 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e4e84f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:03:58, skipping insertion in model container [2018-11-06 22:03:58,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:03:39" (2/3) ... [2018-11-06 22:03:58,927 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e4e84f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:03:58, skipping insertion in model container [2018-11-06 22:03:58,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:03:58" (3/3) ... [2018-11-06 22:03:58,929 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label45_true-unreach-call.c [2018-11-06 22:03:58,939 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-06 22:03:58,950 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-06 22:03:58,968 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-06 22:03:59,021 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-06 22:03:59,022 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-06 22:03:59,022 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-06 22:03:59,022 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-06 22:03:59,022 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-06 22:03:59,022 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-06 22:03:59,022 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-06 22:03:59,022 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-06 22:03:59,023 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-06 22:03:59,071 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states. [2018-11-06 22:03:59,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-11-06 22:03:59,081 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:03:59,082 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] [2018-11-06 22:03:59,084 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:03:59,090 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:03:59,090 INFO L82 PathProgramCache]: Analyzing trace with hash -1660793902, now seen corresponding path program 1 times [2018-11-06 22:03:59,093 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:03:59,093 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:03:59,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:03:59,137 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:03:59,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:03:59,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:03:59,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:03:59,563 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 22:03:59,563 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 22:03:59,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 22:03:59,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 22:03:59,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 22:03:59,588 INFO L87 Difference]: Start difference. First operand 1749 states. Second operand 4 states. [2018-11-06 22:04:20,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:04:20,416 INFO L93 Difference]: Finished difference Result 6361 states and 12176 transitions. [2018-11-06 22:04:20,418 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 22:04:20,420 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 48 [2018-11-06 22:04:20,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:04:20,478 INFO L225 Difference]: With dead ends: 6361 [2018-11-06 22:04:20,478 INFO L226 Difference]: Without dead ends: 4605 [2018-11-06 22:04:20,486 INFO L604 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 [2018-11-06 22:04:20,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4605 states. [2018-11-06 22:04:20,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4605 to 3148. [2018-11-06 22:04:20,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3148 states. [2018-11-06 22:04:20,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3148 states to 3148 states and 5068 transitions. [2018-11-06 22:04:20,691 INFO L78 Accepts]: Start accepts. Automaton has 3148 states and 5068 transitions. Word has length 48 [2018-11-06 22:04:20,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:04:20,692 INFO L480 AbstractCegarLoop]: Abstraction has 3148 states and 5068 transitions. [2018-11-06 22:04:20,692 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 22:04:20,692 INFO L276 IsEmpty]: Start isEmpty. Operand 3148 states and 5068 transitions. [2018-11-06 22:04:20,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-11-06 22:04:20,697 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:04:20,698 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, 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] [2018-11-06 22:04:20,698 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:04:20,698 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:04:20,699 INFO L82 PathProgramCache]: Analyzing trace with hash 1361041398, now seen corresponding path program 1 times [2018-11-06 22:04:20,699 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:04:20,699 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:04:20,700 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:04:20,700 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:04:20,700 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:04:20,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:04:21,068 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-11-06 22:04:21,702 WARN L179 SmtUtils]: Spent 578.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 19 [2018-11-06 22:04:22,081 WARN L179 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 24 [2018-11-06 22:04:22,172 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:04:22,172 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 22:04:22,173 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-06 22:04:22,174 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-06 22:04:22,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-06 22:04:22,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-11-06 22:04:22,175 INFO L87 Difference]: Start difference. First operand 3148 states and 5068 transitions. Second operand 6 states. [2018-11-06 22:04:49,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:04:49,219 INFO L93 Difference]: Finished difference Result 13170 states and 20020 transitions. [2018-11-06 22:04:49,219 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-06 22:04:49,219 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 116 [2018-11-06 22:04:49,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:04:49,266 INFO L225 Difference]: With dead ends: 13170 [2018-11-06 22:04:49,267 INFO L226 Difference]: Without dead ends: 10024 [2018-11-06 22:04:49,273 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-11-06 22:04:49,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10024 states. [2018-11-06 22:04:49,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10024 to 8652. [2018-11-06 22:04:49,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8652 states. [2018-11-06 22:04:49,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8652 states to 8652 states and 12036 transitions. [2018-11-06 22:04:49,450 INFO L78 Accepts]: Start accepts. Automaton has 8652 states and 12036 transitions. Word has length 116 [2018-11-06 22:04:49,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:04:49,451 INFO L480 AbstractCegarLoop]: Abstraction has 8652 states and 12036 transitions. [2018-11-06 22:04:49,451 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-06 22:04:49,451 INFO L276 IsEmpty]: Start isEmpty. Operand 8652 states and 12036 transitions. [2018-11-06 22:04:49,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2018-11-06 22:04:49,470 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:04:49,471 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:04:49,471 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:04:49,472 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:04:49,472 INFO L82 PathProgramCache]: Analyzing trace with hash -692491083, now seen corresponding path program 1 times [2018-11-06 22:04:49,472 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:04:49,472 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:04:49,477 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:04:49,478 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:04:49,478 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:04:49,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:04:50,239 WARN L179 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-11-06 22:04:50,760 WARN L179 SmtUtils]: Spent 468.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 18 [2018-11-06 22:04:51,141 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 110 proven. 0 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2018-11-06 22:04:51,141 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 22:04:51,142 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-06 22:04:51,143 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-06 22:04:51,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-06 22:04:51,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-11-06 22:04:51,144 INFO L87 Difference]: Start difference. First operand 8652 states and 12036 transitions. Second operand 7 states. [2018-11-06 22:05:21,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:05:21,819 INFO L93 Difference]: Finished difference Result 26878 states and 36468 transitions. [2018-11-06 22:05:21,820 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-06 22:05:21,821 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 324 [2018-11-06 22:05:21,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:05:21,908 INFO L225 Difference]: With dead ends: 26878 [2018-11-06 22:05:21,908 INFO L226 Difference]: Without dead ends: 18228 [2018-11-06 22:05:21,919 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2018-11-06 22:05:21,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18228 states. [2018-11-06 22:05:22,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18228 to 15493. [2018-11-06 22:05:22,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15493 states. [2018-11-06 22:05:22,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15493 states to 15493 states and 19189 transitions. [2018-11-06 22:05:22,196 INFO L78 Accepts]: Start accepts. Automaton has 15493 states and 19189 transitions. Word has length 324 [2018-11-06 22:05:22,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:05:22,197 INFO L480 AbstractCegarLoop]: Abstraction has 15493 states and 19189 transitions. [2018-11-06 22:05:22,197 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-06 22:05:22,197 INFO L276 IsEmpty]: Start isEmpty. Operand 15493 states and 19189 transitions. [2018-11-06 22:05:22,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2018-11-06 22:05:22,205 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:05:22,205 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, 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, 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, 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, 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] [2018-11-06 22:05:22,206 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:05:22,206 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:05:22,206 INFO L82 PathProgramCache]: Analyzing trace with hash 408990287, now seen corresponding path program 1 times [2018-11-06 22:05:22,206 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:05:22,206 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:05:22,208 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:05:22,208 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:05:22,209 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:05:22,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:05:22,854 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 91 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:05:22,855 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 22:05:22,855 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 22:05:22,876 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:05:23,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:05:23,029 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:05:23,163 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 156 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:05:23,185 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 22:05:23,185 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2018-11-06 22:05:23,186 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-06 22:05:23,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-06 22:05:23,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-06 22:05:23,187 INFO L87 Difference]: Start difference. First operand 15493 states and 19189 transitions. Second operand 5 states. [2018-11-06 22:05:54,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:05:54,958 INFO L93 Difference]: Finished difference Result 70982 states and 95208 transitions. [2018-11-06 22:05:54,959 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-06 22:05:54,959 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 352 [2018-11-06 22:05:54,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:05:55,062 INFO L225 Difference]: With dead ends: 70982 [2018-11-06 22:05:55,062 INFO L226 Difference]: Without dead ends: 51391 [2018-11-06 22:05:55,087 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 353 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-11-06 22:05:55,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51391 states. [2018-11-06 22:05:55,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51391 to 51309. [2018-11-06 22:05:55,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51309 states. [2018-11-06 22:05:55,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51309 states to 51309 states and 60472 transitions. [2018-11-06 22:05:55,935 INFO L78 Accepts]: Start accepts. Automaton has 51309 states and 60472 transitions. Word has length 352 [2018-11-06 22:05:55,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:05:55,936 INFO L480 AbstractCegarLoop]: Abstraction has 51309 states and 60472 transitions. [2018-11-06 22:05:55,936 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-06 22:05:55,936 INFO L276 IsEmpty]: Start isEmpty. Operand 51309 states and 60472 transitions. [2018-11-06 22:05:55,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2018-11-06 22:05:55,943 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:05:55,944 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:05:55,944 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:05:55,944 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:05:55,944 INFO L82 PathProgramCache]: Analyzing trace with hash 208015303, now seen corresponding path program 1 times [2018-11-06 22:05:55,945 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:05:55,945 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:05:55,946 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:05:55,946 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:05:55,946 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:05:56,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:05:56,561 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 91 proven. 4 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-11-06 22:05:56,561 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 22:05:56,562 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 22:05:56,577 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:05:56,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:05:56,676 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:05:56,787 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 168 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 22:05:56,809 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 22:05:56,809 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-11-06 22:05:56,810 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 22:05:56,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 22:05:56,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 22:05:56,811 INFO L87 Difference]: Start difference. First operand 51309 states and 60472 transitions. Second operand 4 states. [2018-11-06 22:06:14,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:06:14,594 INFO L93 Difference]: Finished difference Result 184884 states and 220618 transitions. [2018-11-06 22:06:14,595 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 22:06:14,595 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 362 [2018-11-06 22:06:14,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:06:14,829 INFO L225 Difference]: With dead ends: 184884 [2018-11-06 22:06:14,829 INFO L226 Difference]: Without dead ends: 134943 [2018-11-06 22:06:14,903 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 364 GetRequests, 362 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 22:06:15,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134943 states. [2018-11-06 22:06:16,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134943 to 86821. [2018-11-06 22:06:16,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86821 states. [2018-11-06 22:06:16,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86821 states to 86821 states and 101826 transitions. [2018-11-06 22:06:16,613 INFO L78 Accepts]: Start accepts. Automaton has 86821 states and 101826 transitions. Word has length 362 [2018-11-06 22:06:16,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:06:16,614 INFO L480 AbstractCegarLoop]: Abstraction has 86821 states and 101826 transitions. [2018-11-06 22:06:16,614 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 22:06:16,614 INFO L276 IsEmpty]: Start isEmpty. Operand 86821 states and 101826 transitions. [2018-11-06 22:06:16,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 666 [2018-11-06 22:06:16,634 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:06:16,635 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, 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, 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, 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, 1, 1, 1, 1, 1] [2018-11-06 22:06:16,635 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:06:16,635 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:06:16,635 INFO L82 PathProgramCache]: Analyzing trace with hash -1985217748, now seen corresponding path program 1 times [2018-11-06 22:06:16,636 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:06:16,636 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:06:16,637 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:06:16,637 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:06:16,637 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:06:16,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:06:17,671 WARN L179 SmtUtils]: Spent 402.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 15 [2018-11-06 22:06:17,898 WARN L179 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 22 [2018-11-06 22:06:18,562 INFO L134 CoverageAnalysis]: Checked inductivity of 677 backedges. 474 proven. 4 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2018-11-06 22:06:18,562 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 22:06:18,562 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 22:06:18,572 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:06:18,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:06:18,738 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:06:19,784 INFO L134 CoverageAnalysis]: Checked inductivity of 677 backedges. 478 proven. 0 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2018-11-06 22:06:19,809 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 22:06:19,810 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-11-06 22:06:19,811 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-06 22:06:19,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-06 22:06:19,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-06 22:06:19,812 INFO L87 Difference]: Start difference. First operand 86821 states and 101826 transitions. Second operand 5 states. [2018-11-06 22:06:37,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:06:37,669 INFO L93 Difference]: Finished difference Result 183205 states and 213687 transitions. [2018-11-06 22:06:37,670 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-06 22:06:37,670 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 665 [2018-11-06 22:06:37,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:06:37,793 INFO L225 Difference]: With dead ends: 183205 [2018-11-06 22:06:37,794 INFO L226 Difference]: Without dead ends: 93651 [2018-11-06 22:06:37,842 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 671 GetRequests, 665 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-11-06 22:06:37,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93651 states. [2018-11-06 22:06:38,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93651 to 90917. [2018-11-06 22:06:38,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90917 states. [2018-11-06 22:06:38,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90917 states to 90917 states and 100330 transitions. [2018-11-06 22:06:38,767 INFO L78 Accepts]: Start accepts. Automaton has 90917 states and 100330 transitions. Word has length 665 [2018-11-06 22:06:38,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:06:38,768 INFO L480 AbstractCegarLoop]: Abstraction has 90917 states and 100330 transitions. [2018-11-06 22:06:38,768 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-06 22:06:38,768 INFO L276 IsEmpty]: Start isEmpty. Operand 90917 states and 100330 transitions. [2018-11-06 22:06:38,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 750 [2018-11-06 22:06:38,794 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:06:38,794 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, 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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:06:38,795 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:06:38,795 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:06:38,795 INFO L82 PathProgramCache]: Analyzing trace with hash -232953415, now seen corresponding path program 1 times [2018-11-06 22:06:38,796 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:06:38,796 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:06:38,796 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:06:38,805 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:06:38,805 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:06:38,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:06:39,876 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2018-11-06 22:06:39,877 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 22:06:39,877 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-06 22:06:39,878 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-06 22:06:39,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-06 22:06:39,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-06 22:06:39,878 INFO L87 Difference]: Start difference. First operand 90917 states and 100330 transitions. Second operand 5 states. [2018-11-06 22:06:59,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:06:59,943 INFO L93 Difference]: Finished difference Result 283097 states and 316959 transitions. [2018-11-06 22:06:59,943 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-06 22:06:59,943 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 749 [2018-11-06 22:06:59,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:07:00,217 INFO L225 Difference]: With dead ends: 283097 [2018-11-06 22:07:00,217 INFO L226 Difference]: Without dead ends: 193548 [2018-11-06 22:07:00,295 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-06 22:07:00,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193548 states. [2018-11-06 22:07:02,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193548 to 122342. [2018-11-06 22:07:02,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122342 states. [2018-11-06 22:07:02,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122342 states to 122342 states and 136739 transitions. [2018-11-06 22:07:02,399 INFO L78 Accepts]: Start accepts. Automaton has 122342 states and 136739 transitions. Word has length 749 [2018-11-06 22:07:02,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:07:02,400 INFO L480 AbstractCegarLoop]: Abstraction has 122342 states and 136739 transitions. [2018-11-06 22:07:02,400 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-06 22:07:02,400 INFO L276 IsEmpty]: Start isEmpty. Operand 122342 states and 136739 transitions. [2018-11-06 22:07:02,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 911 [2018-11-06 22:07:02,412 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:07:02,413 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, 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, 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, 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, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 22:07:02,413 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:07:02,413 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:07:02,414 INFO L82 PathProgramCache]: Analyzing trace with hash 983598751, now seen corresponding path program 1 times [2018-11-06 22:07:02,414 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:07:02,414 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:07:02,415 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:07:02,415 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:07:02,415 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:07:02,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:07:03,712 INFO L134 CoverageAnalysis]: Checked inductivity of 668 backedges. 458 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2018-11-06 22:07:03,713 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 22:07:03,713 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 22:07:03,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 22:07:03,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 22:07:03,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 22:07:03,715 INFO L87 Difference]: Start difference. First operand 122342 states and 136739 transitions. Second operand 4 states. [2018-11-06 22:07:19,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 22:07:19,380 INFO L93 Difference]: Finished difference Result 360967 states and 407433 transitions. [2018-11-06 22:07:19,381 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 22:07:19,381 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 910 [2018-11-06 22:07:19,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 22:07:19,681 INFO L225 Difference]: With dead ends: 360967 [2018-11-06 22:07:19,681 INFO L226 Difference]: Without dead ends: 239993 [2018-11-06 22:07:19,754 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 4 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 22:07:19,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239993 states. [2018-11-06 22:07:21,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239993 to 230269. [2018-11-06 22:07:21,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230269 states. [2018-11-06 22:07:21,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230269 states to 230269 states and 254700 transitions. [2018-11-06 22:07:21,702 INFO L78 Accepts]: Start accepts. Automaton has 230269 states and 254700 transitions. Word has length 910 [2018-11-06 22:07:21,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 22:07:21,704 INFO L480 AbstractCegarLoop]: Abstraction has 230269 states and 254700 transitions. [2018-11-06 22:07:21,704 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 22:07:21,704 INFO L276 IsEmpty]: Start isEmpty. Operand 230269 states and 254700 transitions. [2018-11-06 22:07:21,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1000 [2018-11-06 22:07:21,725 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 22:07:21,726 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, 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, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 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, 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, 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] [2018-11-06 22:07:21,727 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 22:07:21,727 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 22:07:21,727 INFO L82 PathProgramCache]: Analyzing trace with hash 1927149908, now seen corresponding path program 1 times [2018-11-06 22:07:21,727 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 22:07:21,727 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 22:07:21,728 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:07:21,728 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:07:21,729 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 22:07:21,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2018-11-06 22:07:25,924 INFO L134 CoverageAnalysis]: Checked inductivity of 827 backedges. 548 proven. 72 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2018-11-06 22:07:25,925 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 22:07:25,925 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-06 22:07:25,933 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 22:07:26,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 22:07:26,177 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 22:07:26,226 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-11-06 22:07:26,428 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 22:07:26,428 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-06 22:07:26,433 WARN L205 ceAbstractionStarter]: Timeout [2018-11-06 22:07:26,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:07:26 BoogieIcfgContainer [2018-11-06 22:07:26,434 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-06 22:07:26,435 INFO L168 Benchmark]: Toolchain (without parser) took 230540.37 ms. Allocated memory was 1.5 GB in the beginning and 3.4 GB in the end (delta: 1.8 GB). Free memory was 1.4 GB in the beginning and 1.6 GB in the end (delta: -202.4 MB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-11-06 22:07:26,436 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-06 22:07:26,436 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3374.90 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 401.7 MB). Peak memory consumption was 401.7 MB. Max. memory is 7.1 GB. [2018-11-06 22:07:26,437 INFO L168 Benchmark]: Boogie Procedure Inliner took 1138.75 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 877.7 MB). Free memory was 1.0 GB in the beginning and 2.2 GB in the end (delta: -1.2 GB). Peak memory consumption was 99.0 MB. Max. memory is 7.1 GB. [2018-11-06 22:07:26,438 INFO L168 Benchmark]: Boogie Preprocessor took 862.52 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 100.9 MB). Peak memory consumption was 100.9 MB. Max. memory is 7.1 GB. [2018-11-06 22:07:26,440 INFO L168 Benchmark]: RCFGBuilder took 17647.49 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 299.4 MB). Free memory was 2.1 GB in the beginning and 2.4 GB in the end (delta: -371.6 MB). Peak memory consumption was 812.4 MB. Max. memory is 7.1 GB. [2018-11-06 22:07:26,441 INFO L168 Benchmark]: TraceAbstraction took 207511.82 ms. Allocated memory was 2.7 GB in the beginning and 3.4 GB in the end (delta: 635.4 MB). Free memory was 2.4 GB in the beginning and 1.6 GB in the end (delta: 830.0 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-11-06 22:07:26,448 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 3374.90 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 401.7 MB). Peak memory consumption was 401.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 1138.75 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 877.7 MB). Free memory was 1.0 GB in the beginning and 2.2 GB in the end (delta: -1.2 GB). Peak memory consumption was 99.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 862.52 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 100.9 MB). Peak memory consumption was 100.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 17647.49 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 299.4 MB). Free memory was 2.1 GB in the beginning and 2.4 GB in the end (delta: -371.6 MB). Peak memory consumption was 812.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 207511.82 ms. Allocated memory was 2.7 GB in the beginning and 3.4 GB in the end (delta: 635.4 MB). Free memory was 2.4 GB in the beginning and 1.6 GB in the end (delta: 830.0 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 157]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 157). Cancelled while BasicCegarLoop was analyzing trace of length 1000 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while PredicateComparison was comparing new predicate (quantifier-free) to 4 known predicates. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1749 locations, 1 error locations. TIMEOUT Result, 207.4s OverallTime, 9 OverallIterations, 4 TraceHistogramMax, 183.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 9783 SDtfs, 47414 SDslu, 4414 SDs, 0 SdLazy, 101758 SolverSat, 21345 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 149.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1430 GetRequests, 1388 SyntacticMatches, 10 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 4.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=230269occurred in iteration=8, 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: 8.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 137432 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 7.7s InterpolantComputationTime, 4905 NumberOfCodeBlocks, 4905 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 4894 ConstructedInterpolants, 0 QuantifiedInterpolants, 8196405 SizeOfPredicates, 6 NumberOfNonLiveVariables, 1673 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 11 InterpolantComputations, 8 PerfectInterpolantSequences, 3099/3172 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown