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/Problem19_label09_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 17:03:15,868 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 17:03:15,870 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 17:03:15,886 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 17:03:15,887 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 17:03:15,888 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 17:03:15,889 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 17:03:15,891 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 17:03:15,892 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 17:03:15,893 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 17:03:15,894 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 17:03:15,894 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 17:03:15,895 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 17:03:15,896 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 17:03:15,897 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 17:03:15,898 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 17:03:15,899 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 17:03:15,901 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 17:03:15,902 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 17:03:15,904 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 17:03:15,905 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 17:03:15,906 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 17:03:15,909 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 17:03:15,909 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 17:03:15,909 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 17:03:15,910 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 17:03:15,911 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 17:03:15,912 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 17:03:15,913 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 17:03:15,914 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 17:03:15,914 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 17:03:15,915 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 17:03:15,915 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 17:03:15,915 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 17:03:15,916 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 17:03:15,917 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 17:03:15,917 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 [2018-10-24 17:03:15,932 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 17:03:15,933 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 17:03:15,934 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 17:03:15,934 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 17:03:15,934 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 17:03:15,935 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 17:03:15,935 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 17:03:15,935 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 17:03:15,935 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 17:03:15,935 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 17:03:15,936 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 17:03:15,936 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 17:03:15,936 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 17:03:15,936 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 17:03:15,936 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 17:03:15,937 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 17:03:15,937 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 17:03:15,937 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 17:03:15,937 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 17:03:15,937 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 17:03:15,938 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 17:03:15,938 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 17:03:15,938 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 17:03:15,938 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 17:03:15,938 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 17:03:15,939 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 17:03:15,939 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 17:03:15,939 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 17:03:15,981 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 17:03:15,994 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 17:03:15,998 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 17:03:15,999 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 17:03:16,000 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 17:03:16,000 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label09_true-unreach-call.c [2018-10-24 17:03:16,061 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c721d8679/ad4e82a1209541eaab91ce0c541f2996/FLAG1b01635e4 [2018-10-24 17:03:16,888 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 17:03:16,889 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label09_true-unreach-call.c [2018-10-24 17:03:16,936 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c721d8679/ad4e82a1209541eaab91ce0c541f2996/FLAG1b01635e4 [2018-10-24 17:03:16,956 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/c721d8679/ad4e82a1209541eaab91ce0c541f2996 [2018-10-24 17:03:16,969 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 17:03:16,971 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 17:03:16,973 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 17:03:16,973 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 17:03:16,978 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 17:03:16,979 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 05:03:16" (1/1) ... [2018-10-24 17:03:16,982 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a445e72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:03:16, skipping insertion in model container [2018-10-24 17:03:16,982 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 05:03:16" (1/1) ... [2018-10-24 17:03:16,993 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 17:03:17,262 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 17:03:19,306 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 17:03:19,311 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 17:03:20,442 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 17:03:20,501 INFO L193 MainTranslator]: Completed translation [2018-10-24 17:03:20,502 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:03:20 WrapperNode [2018-10-24 17:03:20,502 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 17:03:20,503 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 17:03:20,503 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 17:03:20,503 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 17:03:20,516 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:03:20" (1/1) ... [2018-10-24 17:03:20,606 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:03:20" (1/1) ... [2018-10-24 17:03:21,683 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 17:03:21,683 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 17:03:21,683 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 17:03:21,684 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 17:03:21,695 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:03:20" (1/1) ... [2018-10-24 17:03:21,695 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:03:20" (1/1) ... [2018-10-24 17:03:21,876 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:03:20" (1/1) ... [2018-10-24 17:03:21,876 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:03:20" (1/1) ... [2018-10-24 17:03:22,156 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:03:20" (1/1) ... [2018-10-24 17:03:22,206 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:03:20" (1/1) ... [2018-10-24 17:03:22,311 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:03:20" (1/1) ... [2018-10-24 17:03:22,482 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 17:03:22,482 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 17:03:22,483 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 17:03:22,483 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 17:03:22,484 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:03:20" (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 [2018-10-24 17:03:22,552 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 17:03:22,552 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 17:03:22,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 17:03:39,261 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 17:03:39,261 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 05:03:39 BoogieIcfgContainer [2018-10-24 17:03:39,262 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 17:03:39,263 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 17:03:39,263 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 17:03:39,266 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 17:03:39,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 05:03:16" (1/3) ... [2018-10-24 17:03:39,268 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24a12a4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 05:03:39, skipping insertion in model container [2018-10-24 17:03:39,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:03:20" (2/3) ... [2018-10-24 17:03:39,268 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24a12a4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 05:03:39, skipping insertion in model container [2018-10-24 17:03:39,269 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 05:03:39" (3/3) ... [2018-10-24 17:03:39,271 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label09_true-unreach-call.c [2018-10-24 17:03:39,279 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 17:03:39,289 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 17:03:39,307 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 17:03:39,356 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 17:03:39,357 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 17:03:39,357 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 17:03:39,357 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 17:03:39,357 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 17:03:39,358 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 17:03:39,358 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 17:03:39,358 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 17:03:39,358 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 17:03:39,405 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states. [2018-10-24 17:03:39,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-10-24 17:03:39,414 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:03:39,415 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] [2018-10-24 17:03:39,418 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:03:39,423 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:03:39,423 INFO L82 PathProgramCache]: Analyzing trace with hash 1705034714, now seen corresponding path program 1 times [2018-10-24 17:03:39,425 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:03:39,425 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:03:39,480 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:03:39,481 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:03:39,481 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:03:39,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:03:39,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:03:39,954 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:03:39,955 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 17:03:39,960 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:03:39,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:03:39,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:03:39,978 INFO L87 Difference]: Start difference. First operand 1749 states. Second operand 4 states. [2018-10-24 17:04:05,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:04:05,182 INFO L93 Difference]: Finished difference Result 6324 states and 12081 transitions. [2018-10-24 17:04:05,184 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:04:05,185 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 50 [2018-10-24 17:04:05,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:04:05,237 INFO L225 Difference]: With dead ends: 6324 [2018-10-24 17:04:05,238 INFO L226 Difference]: Without dead ends: 4568 [2018-10-24 17:04:05,250 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:04:05,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4568 states. [2018-10-24 17:04:05,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4568 to 4563. [2018-10-24 17:04:05,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4563 states. [2018-10-24 17:04:05,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4563 states to 4563 states and 7487 transitions. [2018-10-24 17:04:05,472 INFO L78 Accepts]: Start accepts. Automaton has 4563 states and 7487 transitions. Word has length 50 [2018-10-24 17:04:05,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:04:05,473 INFO L481 AbstractCegarLoop]: Abstraction has 4563 states and 7487 transitions. [2018-10-24 17:04:05,473 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 17:04:05,473 INFO L276 IsEmpty]: Start isEmpty. Operand 4563 states and 7487 transitions. [2018-10-24 17:04:05,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2018-10-24 17:04:05,483 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:04:05,484 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:04:05,484 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:04:05,485 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:04:05,485 INFO L82 PathProgramCache]: Analyzing trace with hash 362906006, now seen corresponding path program 1 times [2018-10-24 17:04:05,485 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:04:05,485 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:04:05,488 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:04:05,489 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:04:05,489 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:04:05,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:04:05,887 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-10-24 17:04:05,923 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:04:05,923 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:04:05,923 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 17:04:05,927 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:04:05,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:04:05,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:04:05,928 INFO L87 Difference]: Start difference. First operand 4563 states and 7487 transitions. Second operand 4 states. [2018-10-24 17:04:34,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:04:34,878 INFO L93 Difference]: Finished difference Result 17544 states and 29003 transitions. [2018-10-24 17:04:34,879 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:04:34,879 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 128 [2018-10-24 17:04:34,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:04:34,944 INFO L225 Difference]: With dead ends: 17544 [2018-10-24 17:04:34,944 INFO L226 Difference]: Without dead ends: 12983 [2018-10-24 17:04:34,952 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:04:34,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12983 states. [2018-10-24 17:04:35,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12983 to 8662. [2018-10-24 17:04:35,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8662 states. [2018-10-24 17:04:35,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8662 states to 8662 states and 13841 transitions. [2018-10-24 17:04:35,136 INFO L78 Accepts]: Start accepts. Automaton has 8662 states and 13841 transitions. Word has length 128 [2018-10-24 17:04:35,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:04:35,137 INFO L481 AbstractCegarLoop]: Abstraction has 8662 states and 13841 transitions. [2018-10-24 17:04:35,137 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 17:04:35,137 INFO L276 IsEmpty]: Start isEmpty. Operand 8662 states and 13841 transitions. [2018-10-24 17:04:35,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-10-24 17:04:35,140 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:04:35,141 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:04:35,141 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:04:35,141 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:04:35,142 INFO L82 PathProgramCache]: Analyzing trace with hash -1220319178, now seen corresponding path program 1 times [2018-10-24 17:04:35,142 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:04:35,142 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:04:35,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:04:35,143 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:04:35,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:04:35,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:04:35,450 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 3 [2018-10-24 17:04:35,477 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:04:35,478 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:04:35,478 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 17:04:35,478 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:04:35,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:04:35,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:04:35,479 INFO L87 Difference]: Start difference. First operand 8662 states and 13841 transitions. Second operand 4 states. [2018-10-24 17:04:54,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:04:54,858 INFO L93 Difference]: Finished difference Result 33991 states and 54526 transitions. [2018-10-24 17:04:54,858 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:04:54,858 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 148 [2018-10-24 17:04:54,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:04:54,935 INFO L225 Difference]: With dead ends: 33991 [2018-10-24 17:04:54,936 INFO L226 Difference]: Without dead ends: 25331 [2018-10-24 17:04:54,955 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 [2018-10-24 17:04:54,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25331 states. [2018-10-24 17:04:55,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25331 to 25321. [2018-10-24 17:04:55,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25321 states. [2018-10-24 17:04:55,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25321 states to 25321 states and 34467 transitions. [2018-10-24 17:04:55,750 INFO L78 Accepts]: Start accepts. Automaton has 25321 states and 34467 transitions. Word has length 148 [2018-10-24 17:04:55,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:04:55,752 INFO L481 AbstractCegarLoop]: Abstraction has 25321 states and 34467 transitions. [2018-10-24 17:04:55,753 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 17:04:55,753 INFO L276 IsEmpty]: Start isEmpty. Operand 25321 states and 34467 transitions. [2018-10-24 17:04:55,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2018-10-24 17:04:55,757 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:04:55,758 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:04:55,758 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:04:55,759 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:04:55,759 INFO L82 PathProgramCache]: Analyzing trace with hash -1377368241, now seen corresponding path program 1 times [2018-10-24 17:04:55,759 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:04:55,759 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:04:55,762 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:04:55,763 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:04:55,763 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:04:55,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:04:56,088 WARN L179 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-10-24 17:04:56,325 WARN L179 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 19 [2018-10-24 17:04:56,449 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 24 [2018-10-24 17:04:56,595 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:04:56,596 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:04:56,596 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 17:04:56,596 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 17:04:56,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 17:04:56,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-24 17:04:56,597 INFO L87 Difference]: Start difference. First operand 25321 states and 34467 transitions. Second operand 6 states. [2018-10-24 17:05:27,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:05:27,744 INFO L93 Difference]: Finished difference Result 82151 states and 109854 transitions. [2018-10-24 17:05:27,744 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-24 17:05:27,744 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 155 [2018-10-24 17:05:27,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:05:27,835 INFO L225 Difference]: With dead ends: 82151 [2018-10-24 17:05:27,835 INFO L226 Difference]: Without dead ends: 56832 [2018-10-24 17:05:27,876 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-10-24 17:05:27,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56832 states. [2018-10-24 17:05:28,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56832 to 55390. [2018-10-24 17:05:28,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55390 states. [2018-10-24 17:05:28,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55390 states to 55390 states and 72762 transitions. [2018-10-24 17:05:28,957 INFO L78 Accepts]: Start accepts. Automaton has 55390 states and 72762 transitions. Word has length 155 [2018-10-24 17:05:28,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:05:28,958 INFO L481 AbstractCegarLoop]: Abstraction has 55390 states and 72762 transitions. [2018-10-24 17:05:28,958 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 17:05:28,958 INFO L276 IsEmpty]: Start isEmpty. Operand 55390 states and 72762 transitions. [2018-10-24 17:05:28,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2018-10-24 17:05:28,964 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:05:28,965 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:05:28,965 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:05:28,965 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:05:28,965 INFO L82 PathProgramCache]: Analyzing trace with hash -986324909, now seen corresponding path program 1 times [2018-10-24 17:05:28,966 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:05:28,966 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:05:28,966 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:05:28,967 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:05:28,967 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:05:29,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:05:29,531 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2018-10-24 17:05:29,531 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 17:05:29,531 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 [2018-10-24 17:05:29,556 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:05:29,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:05:29,721 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 17:05:29,929 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:05:29,962 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 17:05:29,962 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2018-10-24 17:05:29,963 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 17:05:29,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 17:05:29,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 17:05:29,964 INFO L87 Difference]: Start difference. First operand 55390 states and 72762 transitions. Second operand 5 states. [2018-10-24 17:05:58,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:05:58,298 INFO L93 Difference]: Finished difference Result 240734 states and 318643 transitions. [2018-10-24 17:05:58,302 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 17:05:58,302 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 286 [2018-10-24 17:05:58,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:05:58,668 INFO L225 Difference]: With dead ends: 240734 [2018-10-24 17:05:58,669 INFO L226 Difference]: Without dead ends: 185346 [2018-10-24 17:05:58,749 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 17:05:58,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185346 states. [2018-10-24 17:06:01,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185346 to 141467. [2018-10-24 17:06:01,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141467 states. [2018-10-24 17:06:01,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141467 states to 141467 states and 171476 transitions. [2018-10-24 17:06:01,487 INFO L78 Accepts]: Start accepts. Automaton has 141467 states and 171476 transitions. Word has length 286 [2018-10-24 17:06:01,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:06:01,488 INFO L481 AbstractCegarLoop]: Abstraction has 141467 states and 171476 transitions. [2018-10-24 17:06:01,488 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 17:06:01,488 INFO L276 IsEmpty]: Start isEmpty. Operand 141467 states and 171476 transitions. [2018-10-24 17:06:01,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 518 [2018-10-24 17:06:01,507 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:06:01,508 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:06:01,508 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:06:01,508 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:06:01,509 INFO L82 PathProgramCache]: Analyzing trace with hash -89499515, now seen corresponding path program 1 times [2018-10-24 17:06:01,509 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:06:01,509 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:06:01,510 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:06:01,510 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:06:01,510 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:06:01,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:06:02,193 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 394 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2018-10-24 17:06:02,193 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:06:02,193 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 17:06:02,195 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:06:02,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:06:02,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:06:02,196 INFO L87 Difference]: Start difference. First operand 141467 states and 171476 transitions. Second operand 4 states. [2018-10-24 17:06:23,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:06:23,439 INFO L93 Difference]: Finished difference Result 315713 states and 385092 transitions. [2018-10-24 17:06:23,440 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:06:23,440 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 517 [2018-10-24 17:06:23,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:06:23,660 INFO L225 Difference]: With dead ends: 315713 [2018-10-24 17:06:23,660 INFO L226 Difference]: Without dead ends: 174248 [2018-10-24 17:06:23,751 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:06:23,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174248 states. [2018-10-24 17:06:26,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174248 to 174237. [2018-10-24 17:06:26,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174237 states. [2018-10-24 17:06:26,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174237 states to 174237 states and 199055 transitions. [2018-10-24 17:06:26,283 INFO L78 Accepts]: Start accepts. Automaton has 174237 states and 199055 transitions. Word has length 517 [2018-10-24 17:06:26,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:06:26,283 INFO L481 AbstractCegarLoop]: Abstraction has 174237 states and 199055 transitions. [2018-10-24 17:06:26,283 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 17:06:26,284 INFO L276 IsEmpty]: Start isEmpty. Operand 174237 states and 199055 transitions. [2018-10-24 17:06:26,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 908 [2018-10-24 17:06:26,319 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:06:26,320 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 17:06:26,320 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:06:26,320 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:06:26,321 INFO L82 PathProgramCache]: Analyzing trace with hash -1539725812, now seen corresponding path program 1 times [2018-10-24 17:06:26,321 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:06:26,321 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:06:26,322 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:06:26,322 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:06:26,322 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:06:26,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:06:27,585 INFO L134 CoverageAnalysis]: Checked inductivity of 589 backedges. 283 proven. 0 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2018-10-24 17:06:27,585 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:06:27,586 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 17:06:27,587 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:06:27,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:06:27,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:06:27,588 INFO L87 Difference]: Start difference. First operand 174237 states and 199055 transitions. Second operand 4 states. [2018-10-24 17:06:49,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:06:49,634 INFO L93 Difference]: Finished difference Result 392195 states and 449898 transitions. [2018-10-24 17:06:49,634 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:06:49,634 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 907 [2018-10-24 17:06:49,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:06:49,901 INFO L225 Difference]: With dead ends: 392195 [2018-10-24 17:06:49,902 INFO L226 Difference]: Without dead ends: 217960 [2018-10-24 17:06:49,981 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 [2018-10-24 17:06:50,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217960 states. [2018-10-24 17:06:51,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217960 to 205651. [2018-10-24 17:06:51,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205651 states. [2018-10-24 17:06:53,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205651 states to 205651 states and 228573 transitions. [2018-10-24 17:06:53,358 INFO L78 Accepts]: Start accepts. Automaton has 205651 states and 228573 transitions. Word has length 907 [2018-10-24 17:06:53,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:06:53,359 INFO L481 AbstractCegarLoop]: Abstraction has 205651 states and 228573 transitions. [2018-10-24 17:06:53,360 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 17:06:53,360 INFO L276 IsEmpty]: Start isEmpty. Operand 205651 states and 228573 transitions. [2018-10-24 17:06:53,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1009 [2018-10-24 17:06:53,382 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:06:53,383 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 17:06:53,383 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:06:53,384 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:06:53,384 INFO L82 PathProgramCache]: Analyzing trace with hash -526540857, now seen corresponding path program 1 times [2018-10-24 17:06:53,384 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:06:53,384 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:06:53,385 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:06:53,385 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:06:53,385 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:06:53,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:06:54,387 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2018-10-24 17:07:02,302 INFO L134 CoverageAnalysis]: Checked inductivity of 908 backedges. 331 proven. 457 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2018-10-24 17:07:02,302 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 17:07:02,302 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 [2018-10-24 17:07:02,310 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:07:02,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:07:02,553 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 17:07:03,059 INFO L134 CoverageAnalysis]: Checked inductivity of 908 backedges. 400 proven. 0 refuted. 0 times theorem prover too weak. 508 trivial. 0 not checked. [2018-10-24 17:07:03,079 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 17:07:03,080 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2018-10-24 17:07:03,082 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-10-24 17:07:03,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-10-24 17:07:03,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2018-10-24 17:07:03,083 INFO L87 Difference]: Start difference. First operand 205651 states and 228573 transitions. Second operand 10 states. Received shutdown request... [2018-10-24 17:07:04,523 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 17:07:04,523 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 17:07:04,529 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 17:07:04,530 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 05:07:04 BoogieIcfgContainer [2018-10-24 17:07:04,530 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 17:07:04,531 INFO L168 Benchmark]: Toolchain (without parser) took 227560.89 ms. Allocated memory was 1.5 GB in the beginning and 4.4 GB in the end (delta: 2.9 GB). Free memory was 1.4 GB in the beginning and 3.7 GB in the end (delta: -2.3 GB). Peak memory consumption was 622.3 MB. Max. memory is 7.1 GB. [2018-10-24 17:07:04,532 INFO L168 Benchmark]: CDTParser took 0.21 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. [2018-10-24 17:07:04,532 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3529.56 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 974.4 MB in the end (delta: 401.7 MB). Peak memory consumption was 401.7 MB. Max. memory is 7.1 GB. [2018-10-24 17:07:04,533 INFO L168 Benchmark]: Boogie Procedure Inliner took 1180.12 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 818.9 MB). Free memory was 974.4 MB in the beginning and 2.1 GB in the end (delta: -1.1 GB). Peak memory consumption was 117.1 MB. Max. memory is 7.1 GB. [2018-10-24 17:07:04,534 INFO L168 Benchmark]: Boogie Preprocessor took 798.88 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 107.3 MB). Peak memory consumption was 107.3 MB. Max. memory is 7.1 GB. [2018-10-24 17:07:04,535 INFO L168 Benchmark]: RCFGBuilder took 16779.42 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 280.0 MB). Free memory was 2.0 GB in the beginning and 1.5 GB in the end (delta: 519.1 MB). Peak memory consumption was 799.1 MB. Max. memory is 7.1 GB. [2018-10-24 17:07:04,536 INFO L168 Benchmark]: TraceAbstraction took 205267.04 ms. Allocated memory was 2.6 GB in the beginning and 4.4 GB in the end (delta: 1.8 GB). Free memory was 1.5 GB in the beginning and 3.7 GB in the end (delta: -2.2 GB). There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 17:07:04,541 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 3529.56 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 974.4 MB in the end (delta: 401.7 MB). Peak memory consumption was 401.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 1180.12 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 818.9 MB). Free memory was 974.4 MB in the beginning and 2.1 GB in the end (delta: -1.1 GB). Peak memory consumption was 117.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 798.88 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 107.3 MB). Peak memory consumption was 107.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 16779.42 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 280.0 MB). Free memory was 2.0 GB in the beginning and 1.5 GB in the end (delta: 519.1 MB). Peak memory consumption was 799.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 205267.04 ms. Allocated memory was 2.6 GB in the beginning and 4.4 GB in the end (delta: 1.8 GB). Free memory was 1.5 GB in the beginning and 3.7 GB in the end (delta: -2.2 GB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 163]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 163). Cancelled while BasicCegarLoop was constructing difference of abstraction (205651states) and FLOYD_HOARE automaton (currently 3 states, 10 states before enhancement),while ReachableStatesComputation was computing reachable states (124 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1749 locations, 1 error locations. TIMEOUT Result, 205.1s OverallTime, 8 OverallIterations, 5 TraceHistogramMax, 179.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 8931 SDtfs, 31002 SDslu, 2822 SDs, 0 SdLazy, 68627 SolverSat, 18485 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 152.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1338 GetRequests, 1304 SyntacticMatches, 7 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 2.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=205651occurred in iteration=7, 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: 10.9s AutomataMinimizationTime, 7 MinimizatonAttempts, 61977 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 4.9s InterpolantComputationTime, 4493 NumberOfCodeBlocks, 4493 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 4483 ConstructedInterpolants, 0 QuantifiedInterpolants, 10676774 SizeOfPredicates, 1 NumberOfNonLiveVariables, 1515 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 10 InterpolantComputations, 8 PerfectInterpolantSequences, 2620/3082 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown