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/Problem13_label21_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 14:08:30,939 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 14:08:30,941 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 14:08:30,952 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 14:08:30,953 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 14:08:30,954 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 14:08:30,955 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 14:08:30,956 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 14:08:30,958 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 14:08:30,959 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 14:08:30,960 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 14:08:30,960 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 14:08:30,961 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 14:08:30,962 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 14:08:30,963 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 14:08:30,964 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 14:08:30,965 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 14:08:30,967 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 14:08:30,969 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 14:08:30,976 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 14:08:30,980 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 14:08:30,981 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 14:08:30,987 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 14:08:30,987 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 14:08:30,987 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 14:08:30,990 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 14:08:30,992 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 14:08:30,993 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 14:08:30,994 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 14:08:30,997 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 14:08:30,997 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 14:08:30,998 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-24 14:08:31,002 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 14:08:31,022 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 14:08:31,023 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 14:08:31,023 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 14:08:31,024 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 14:08:31,024 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 14:08:31,024 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 14:08:31,025 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 14:08:31,025 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 14:08:31,025 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 14:08:31,025 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 14:08:31,025 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 14:08:31,026 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 14:08:31,026 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 14:08:31,026 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 14:08:31,026 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 14:08:31,026 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 14:08:31,027 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 14:08:31,027 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 14:08:31,027 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 14:08:31,027 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 14:08:31,027 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 14:08:31,028 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 14:08:31,028 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 14:08:31,028 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 14:08:31,028 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 14:08:31,028 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 14:08:31,029 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 14:08:31,029 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 14:08:31,105 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 14:08:31,121 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 14:08:31,125 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 14:08:31,127 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 14:08:31,127 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 14:08:31,128 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label21_false-unreach-call.c [2018-10-24 14:08:31,190 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0d9fef0bb/76eda6df51c74adc92a906f35b9fbe92/FLAGc7c88a934 [2018-10-24 14:08:32,013 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 14:08:32,014 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label21_false-unreach-call.c [2018-10-24 14:08:32,053 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0d9fef0bb/76eda6df51c74adc92a906f35b9fbe92/FLAGc7c88a934 [2018-10-24 14:08:32,077 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/0d9fef0bb/76eda6df51c74adc92a906f35b9fbe92 [2018-10-24 14:08:32,089 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 14:08:32,091 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 14:08:32,092 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 14:08:32,092 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 14:08:32,098 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 14:08:32,100 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:08:32" (1/1) ... [2018-10-24 14:08:32,103 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47d53142 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:08:32, skipping insertion in model container [2018-10-24 14:08:32,104 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:08:32" (1/1) ... [2018-10-24 14:08:32,116 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 14:08:32,302 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 14:08:33,818 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 14:08:33,828 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 14:08:34,566 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 14:08:34,604 INFO L193 MainTranslator]: Completed translation [2018-10-24 14:08:34,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:08:34 WrapperNode [2018-10-24 14:08:34,605 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 14:08:34,606 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 14:08:34,606 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 14:08:34,606 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 14:08:34,617 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:08:34" (1/1) ... [2018-10-24 14:08:34,705 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:08:34" (1/1) ... [2018-10-24 14:08:35,483 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 14:08:35,483 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 14:08:35,484 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 14:08:35,484 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 14:08:35,495 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:08:34" (1/1) ... [2018-10-24 14:08:35,495 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:08:34" (1/1) ... [2018-10-24 14:08:35,554 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:08:34" (1/1) ... [2018-10-24 14:08:35,554 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:08:34" (1/1) ... [2018-10-24 14:08:35,765 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:08:34" (1/1) ... [2018-10-24 14:08:35,800 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:08:34" (1/1) ... [2018-10-24 14:08:35,862 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:08:34" (1/1) ... [2018-10-24 14:08:35,934 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 14:08:35,935 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 14:08:35,935 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 14:08:35,936 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 14:08:35,937 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:08:34" (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 14:08:36,012 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 14:08:36,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 14:08:36,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 14:08:51,813 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 14:08:51,814 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:08:51 BoogieIcfgContainer [2018-10-24 14:08:51,814 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 14:08:51,815 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 14:08:51,815 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 14:08:51,818 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 14:08:51,819 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:08:32" (1/3) ... [2018-10-24 14:08:51,819 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1406961d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:08:51, skipping insertion in model container [2018-10-24 14:08:51,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:08:34" (2/3) ... [2018-10-24 14:08:51,820 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1406961d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:08:51, skipping insertion in model container [2018-10-24 14:08:51,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:08:51" (3/3) ... [2018-10-24 14:08:51,822 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label21_false-unreach-call.c [2018-10-24 14:08:51,832 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 14:08:51,842 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 14:08:51,860 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 14:08:51,920 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 14:08:51,920 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 14:08:51,920 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 14:08:51,921 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 14:08:51,921 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 14:08:51,921 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 14:08:51,921 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 14:08:51,921 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 14:08:51,921 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 14:08:51,968 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states. [2018-10-24 14:08:51,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-10-24 14:08:51,977 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:08:51,983 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] [2018-10-24 14:08:51,985 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:08:51,990 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:08:51,990 INFO L82 PathProgramCache]: Analyzing trace with hash 1407492386, now seen corresponding path program 1 times [2018-10-24 14:08:51,993 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:08:51,993 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:08:52,048 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:08:52,048 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:08:52,049 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:08:52,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:08:52,342 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 14:08:52,350 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:08:52,350 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:08:52,356 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:08:52,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:08:52,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:08:52,375 INFO L87 Difference]: Start difference. First operand 1099 states. Second operand 4 states. [2018-10-24 14:09:08,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:09:08,037 INFO L93 Difference]: Finished difference Result 3896 states and 7286 transitions. [2018-10-24 14:09:08,037 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:09:08,039 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2018-10-24 14:09:08,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:09:08,085 INFO L225 Difference]: With dead ends: 3896 [2018-10-24 14:09:08,085 INFO L226 Difference]: Without dead ends: 2790 [2018-10-24 14:09:08,093 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 14:09:08,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2790 states. [2018-10-24 14:09:08,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2790 to 1945. [2018-10-24 14:09:08,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1945 states. [2018-10-24 14:09:08,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1945 states to 1945 states and 3412 transitions. [2018-10-24 14:09:08,236 INFO L78 Accepts]: Start accepts. Automaton has 1945 states and 3412 transitions. Word has length 21 [2018-10-24 14:09:08,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:09:08,237 INFO L481 AbstractCegarLoop]: Abstraction has 1945 states and 3412 transitions. [2018-10-24 14:09:08,237 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:09:08,237 INFO L276 IsEmpty]: Start isEmpty. Operand 1945 states and 3412 transitions. [2018-10-24 14:09:08,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2018-10-24 14:09:08,240 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:09:08,241 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 14:09:08,241 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:09:08,241 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:09:08,242 INFO L82 PathProgramCache]: Analyzing trace with hash -1679127623, now seen corresponding path program 1 times [2018-10-24 14:09:08,242 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:09:08,242 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:09:08,243 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:09:08,243 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:09:08,243 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:09:08,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:09:09,145 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:09:09,146 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:09:09,146 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:09:09,149 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 14:09:09,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 14:09:09,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:09:09,150 INFO L87 Difference]: Start difference. First operand 1945 states and 3412 transitions. Second operand 5 states. [2018-10-24 14:09:09,414 WARN L179 SmtUtils]: Spent 212.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2018-10-24 14:09:25,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:09:25,671 INFO L93 Difference]: Finished difference Result 7061 states and 12475 transitions. [2018-10-24 14:09:25,672 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 14:09:25,672 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 87 [2018-10-24 14:09:25,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:09:25,698 INFO L225 Difference]: With dead ends: 7061 [2018-10-24 14:09:25,698 INFO L226 Difference]: Without dead ends: 5118 [2018-10-24 14:09:25,702 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-24 14:09:25,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5118 states. [2018-10-24 14:09:25,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5118 to 5117. [2018-10-24 14:09:25,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5117 states. [2018-10-24 14:09:25,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5117 states to 5117 states and 7612 transitions. [2018-10-24 14:09:25,810 INFO L78 Accepts]: Start accepts. Automaton has 5117 states and 7612 transitions. Word has length 87 [2018-10-24 14:09:25,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:09:25,810 INFO L481 AbstractCegarLoop]: Abstraction has 5117 states and 7612 transitions. [2018-10-24 14:09:25,810 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 14:09:25,811 INFO L276 IsEmpty]: Start isEmpty. Operand 5117 states and 7612 transitions. [2018-10-24 14:09:25,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2018-10-24 14:09:25,816 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:09:25,816 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 14:09:25,817 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:09:25,817 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:09:25,817 INFO L82 PathProgramCache]: Analyzing trace with hash -1632760234, now seen corresponding path program 1 times [2018-10-24 14:09:25,817 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:09:25,818 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:09:25,819 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:09:25,819 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:09:25,819 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:09:25,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:09:25,972 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:09:25,972 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:09:25,972 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 14:09:25,973 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 14:09:25,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 14:09:25,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 14:09:25,974 INFO L87 Difference]: Start difference. First operand 5117 states and 7612 transitions. Second operand 3 states. [2018-10-24 14:09:32,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:09:32,082 INFO L93 Difference]: Finished difference Result 10220 states and 15517 transitions. [2018-10-24 14:09:32,083 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 14:09:32,083 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 147 [2018-10-24 14:09:32,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:09:32,111 INFO L225 Difference]: With dead ends: 10220 [2018-10-24 14:09:32,111 INFO L226 Difference]: Without dead ends: 5893 [2018-10-24 14:09:32,118 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 14:09:32,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5893 states. [2018-10-24 14:09:32,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5893 to 5892. [2018-10-24 14:09:32,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5892 states. [2018-10-24 14:09:32,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5892 states to 5892 states and 7437 transitions. [2018-10-24 14:09:32,217 INFO L78 Accepts]: Start accepts. Automaton has 5892 states and 7437 transitions. Word has length 147 [2018-10-24 14:09:32,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:09:32,218 INFO L481 AbstractCegarLoop]: Abstraction has 5892 states and 7437 transitions. [2018-10-24 14:09:32,218 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 14:09:32,218 INFO L276 IsEmpty]: Start isEmpty. Operand 5892 states and 7437 transitions. [2018-10-24 14:09:32,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-10-24 14:09:32,222 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:09:32,222 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-24 14:09:32,223 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:09:32,223 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:09:32,223 INFO L82 PathProgramCache]: Analyzing trace with hash 1987378621, now seen corresponding path program 1 times [2018-10-24 14:09:32,223 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:09:32,223 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:09:32,224 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:09:32,224 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:09:32,225 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:09:32,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:09:32,556 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 37 proven. 66 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-10-24 14:09:32,556 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:09:32,556 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 14:09:32,574 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:09:32,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:09:32,675 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:09:32,838 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 104 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 14:09:32,873 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 14:09:32,874 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2018-10-24 14:09:32,878 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 14:09:32,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 14:09:32,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:09:32,879 INFO L87 Difference]: Start difference. First operand 5892 states and 7437 transitions. Second operand 5 states. [2018-10-24 14:09:44,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:09:44,583 INFO L93 Difference]: Finished difference Result 20501 states and 27031 transitions. [2018-10-24 14:09:44,590 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 14:09:44,590 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 186 [2018-10-24 14:09:44,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:09:44,653 INFO L225 Difference]: With dead ends: 20501 [2018-10-24 14:09:44,653 INFO L226 Difference]: Without dead ends: 15399 [2018-10-24 14:09:44,666 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 185 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 14:09:44,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15399 states. [2018-10-24 14:09:45,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15399 to 10627. [2018-10-24 14:09:45,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10627 states. [2018-10-24 14:09:45,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10627 states to 10627 states and 13141 transitions. [2018-10-24 14:09:45,083 INFO L78 Accepts]: Start accepts. Automaton has 10627 states and 13141 transitions. Word has length 186 [2018-10-24 14:09:45,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:09:45,083 INFO L481 AbstractCegarLoop]: Abstraction has 10627 states and 13141 transitions. [2018-10-24 14:09:45,084 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 14:09:45,084 INFO L276 IsEmpty]: Start isEmpty. Operand 10627 states and 13141 transitions. [2018-10-24 14:09:45,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2018-10-24 14:09:45,087 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:09:45,087 INFO L375 BasicCegarLoop]: trace histogram [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, 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 14:09:45,092 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:09:45,092 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:09:45,092 INFO L82 PathProgramCache]: Analyzing trace with hash -839750290, now seen corresponding path program 1 times [2018-10-24 14:09:45,092 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:09:45,092 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:09:45,093 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:09:45,094 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:09:45,094 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:09:45,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:09:45,355 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-10-24 14:09:45,355 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:09:45,355 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-24 14:09:45,356 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 14:09:45,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 14:09:45,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 14:09:45,357 INFO L87 Difference]: Start difference. First operand 10627 states and 13141 transitions. Second operand 3 states. [2018-10-24 14:09:53,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:09:53,338 INFO L93 Difference]: Finished difference Result 28343 states and 35767 transitions. [2018-10-24 14:09:53,339 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 14:09:53,339 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 197 [2018-10-24 14:09:53,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:09:53,373 INFO L225 Difference]: With dead ends: 28343 [2018-10-24 14:09:53,373 INFO L226 Difference]: Without dead ends: 18506 [2018-10-24 14:09:53,387 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 14:09:53,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18506 states. [2018-10-24 14:09:53,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18506 to 18505. [2018-10-24 14:09:53,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18505 states. [2018-10-24 14:09:53,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18505 states to 18505 states and 22008 transitions. [2018-10-24 14:09:53,646 INFO L78 Accepts]: Start accepts. Automaton has 18505 states and 22008 transitions. Word has length 197 [2018-10-24 14:09:53,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:09:53,647 INFO L481 AbstractCegarLoop]: Abstraction has 18505 states and 22008 transitions. [2018-10-24 14:09:53,647 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 14:09:53,647 INFO L276 IsEmpty]: Start isEmpty. Operand 18505 states and 22008 transitions. [2018-10-24 14:09:53,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2018-10-24 14:09:53,650 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:09:53,651 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 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 14:09:53,651 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:09:53,651 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:09:53,651 INFO L82 PathProgramCache]: Analyzing trace with hash 194313023, now seen corresponding path program 1 times [2018-10-24 14:09:53,652 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:09:53,652 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:09:53,652 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:09:53,653 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:09:53,653 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:09:53,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:09:54,053 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2018-10-24 14:09:54,053 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:09:54,053 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:09:54,054 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:09:54,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:09:54,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:09:54,055 INFO L87 Difference]: Start difference. First operand 18505 states and 22008 transitions. Second operand 4 states. [2018-10-24 14:10:05,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:10:05,430 INFO L93 Difference]: Finished difference Result 67764 states and 81588 transitions. [2018-10-24 14:10:05,430 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:10:05,431 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 235 [2018-10-24 14:10:05,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:10:05,498 INFO L225 Difference]: With dead ends: 67764 [2018-10-24 14:10:05,498 INFO L226 Difference]: Without dead ends: 48456 [2018-10-24 14:10:05,527 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 14:10:05,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48456 states. [2018-10-24 14:10:06,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48456 to 47647. [2018-10-24 14:10:06,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47647 states. [2018-10-24 14:10:06,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47647 states to 47647 states and 54708 transitions. [2018-10-24 14:10:06,138 INFO L78 Accepts]: Start accepts. Automaton has 47647 states and 54708 transitions. Word has length 235 [2018-10-24 14:10:06,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:10:06,139 INFO L481 AbstractCegarLoop]: Abstraction has 47647 states and 54708 transitions. [2018-10-24 14:10:06,139 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:10:06,139 INFO L276 IsEmpty]: Start isEmpty. Operand 47647 states and 54708 transitions. [2018-10-24 14:10:06,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 309 [2018-10-24 14:10:06,146 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:10:06,146 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:10:06,147 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:10:06,147 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:10:06,147 INFO L82 PathProgramCache]: Analyzing trace with hash -1947080896, now seen corresponding path program 1 times [2018-10-24 14:10:06,147 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:10:06,147 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:10:06,148 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:10:06,148 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:10:06,148 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:10:06,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:10:06,674 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 308 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-10-24 14:10:06,674 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:10:06,674 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:10:06,675 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 14:10:06,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 14:10:06,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:10:06,680 INFO L87 Difference]: Start difference. First operand 47647 states and 54708 transitions. Second operand 5 states. [2018-10-24 14:10:28,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:10:28,910 INFO L93 Difference]: Finished difference Result 187761 states and 214891 transitions. [2018-10-24 14:10:28,911 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 14:10:28,911 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 308 [2018-10-24 14:10:28,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:10:29,092 INFO L225 Difference]: With dead ends: 187761 [2018-10-24 14:10:29,092 INFO L226 Difference]: Without dead ends: 140904 [2018-10-24 14:10:29,173 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 14:10:29,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140904 states. [2018-10-24 14:10:30,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140904 to 129689. [2018-10-24 14:10:30,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129689 states. [2018-10-24 14:10:31,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129689 states to 129689 states and 145450 transitions. [2018-10-24 14:10:31,154 INFO L78 Accepts]: Start accepts. Automaton has 129689 states and 145450 transitions. Word has length 308 [2018-10-24 14:10:31,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:10:31,155 INFO L481 AbstractCegarLoop]: Abstraction has 129689 states and 145450 transitions. [2018-10-24 14:10:31,155 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 14:10:31,155 INFO L276 IsEmpty]: Start isEmpty. Operand 129689 states and 145450 transitions. [2018-10-24 14:10:31,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 452 [2018-10-24 14:10:31,182 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:10:31,182 INFO L375 BasicCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-24 14:10:31,182 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:10:31,183 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:10:31,183 INFO L82 PathProgramCache]: Analyzing trace with hash -1318216046, now seen corresponding path program 1 times [2018-10-24 14:10:31,183 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:10:31,183 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:10:31,184 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:10:31,184 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:10:31,184 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:10:31,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:10:31,763 INFO L134 CoverageAnalysis]: Checked inductivity of 647 backedges. 372 proven. 0 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2018-10-24 14:10:31,763 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:10:31,764 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:10:31,764 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:10:31,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:10:31,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:10:31,765 INFO L87 Difference]: Start difference. First operand 129689 states and 145450 transitions. Second operand 4 states. [2018-10-24 14:10:46,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:10:46,875 INFO L93 Difference]: Finished difference Result 301306 states and 339277 transitions. [2018-10-24 14:10:46,876 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:10:46,876 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 451 [2018-10-24 14:10:46,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:10:47,088 INFO L225 Difference]: With dead ends: 301306 [2018-10-24 14:10:47,088 INFO L226 Difference]: Without dead ends: 172407 [2018-10-24 14:10:47,174 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 14:10:47,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172407 states. [2018-10-24 14:10:49,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172407 to 171490. [2018-10-24 14:10:49,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171490 states. [2018-10-24 14:10:49,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171490 states to 171490 states and 191710 transitions. [2018-10-24 14:10:49,981 INFO L78 Accepts]: Start accepts. Automaton has 171490 states and 191710 transitions. Word has length 451 [2018-10-24 14:10:49,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:10:49,982 INFO L481 AbstractCegarLoop]: Abstraction has 171490 states and 191710 transitions. [2018-10-24 14:10:49,982 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:10:49,982 INFO L276 IsEmpty]: Start isEmpty. Operand 171490 states and 191710 transitions. [2018-10-24 14:10:50,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 476 [2018-10-24 14:10:50,010 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:10:50,011 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-24 14:10:50,011 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:10:50,011 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:10:50,011 INFO L82 PathProgramCache]: Analyzing trace with hash -933411502, now seen corresponding path program 1 times [2018-10-24 14:10:50,012 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:10:50,012 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:10:50,012 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:10:50,013 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:10:50,013 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:10:50,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:10:50,542 INFO L134 CoverageAnalysis]: Checked inductivity of 888 backedges. 693 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2018-10-24 14:10:50,542 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:10:50,542 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:10:50,543 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:10:50,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:10:50,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:10:50,544 INFO L87 Difference]: Start difference. First operand 171490 states and 191710 transitions. Second operand 4 states. [2018-10-24 14:11:02,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:11:02,644 INFO L93 Difference]: Finished difference Result 428894 states and 479842 transitions. [2018-10-24 14:11:02,647 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 14:11:02,648 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 475 [2018-10-24 14:11:02,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:11:02,917 INFO L225 Difference]: With dead ends: 428894 [2018-10-24 14:11:02,917 INFO L226 Difference]: Without dead ends: 251079 [2018-10-24 14:11:03,008 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 14:11:03,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251079 states. [2018-10-24 14:11:04,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251079 to 247898. [2018-10-24 14:11:04,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247898 states. [2018-10-24 14:11:06,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247898 states to 247898 states and 270772 transitions. [2018-10-24 14:11:06,728 INFO L78 Accepts]: Start accepts. Automaton has 247898 states and 270772 transitions. Word has length 475 [2018-10-24 14:11:06,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:11:06,729 INFO L481 AbstractCegarLoop]: Abstraction has 247898 states and 270772 transitions. [2018-10-24 14:11:06,729 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 14:11:06,729 INFO L276 IsEmpty]: Start isEmpty. Operand 247898 states and 270772 transitions. [2018-10-24 14:11:06,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 510 [2018-10-24 14:11:06,759 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:11:06,760 INFO L375 BasicCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 14:11:06,760 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:11:06,760 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:11:06,760 INFO L82 PathProgramCache]: Analyzing trace with hash 197526059, now seen corresponding path program 1 times [2018-10-24 14:11:06,760 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:11:06,761 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:11:06,761 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:11:06,761 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:11:06,762 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:11:06,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:11:07,121 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-24 14:11:07,316 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-10-24 14:11:07,795 WARN L179 SmtUtils]: Spent 416.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 21 [2018-10-24 14:11:08,338 INFO L134 CoverageAnalysis]: Checked inductivity of 761 backedges. 502 proven. 110 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2018-10-24 14:11:08,338 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 14:11:08,338 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 14:11:08,348 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:11:08,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:11:08,495 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 14:11:08,653 INFO L134 CoverageAnalysis]: Checked inductivity of 761 backedges. 498 proven. 0 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2018-10-24 14:11:08,673 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 14:11:08,673 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2018-10-24 14:11:08,675 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-24 14:11:08,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-24 14:11:08,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2018-10-24 14:11:08,675 INFO L87 Difference]: Start difference. First operand 247898 states and 270772 transitions. Second operand 8 states. [2018-10-24 14:11:44,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:11:44,485 INFO L93 Difference]: Finished difference Result 514794 states and 562261 transitions. [2018-10-24 14:11:44,486 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-24 14:11:44,486 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 509 [2018-10-24 14:11:44,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:11:45,113 INFO L225 Difference]: With dead ends: 514794 [2018-10-24 14:11:45,113 INFO L226 Difference]: Without dead ends: 253474 [2018-10-24 14:11:45,196 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 526 GetRequests, 514 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2018-10-24 14:11:45,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253474 states. [2018-10-24 14:11:47,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253474 to 233658. [2018-10-24 14:11:47,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233658 states. [2018-10-24 14:11:47,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233658 states to 233658 states and 246264 transitions. [2018-10-24 14:11:47,887 INFO L78 Accepts]: Start accepts. Automaton has 233658 states and 246264 transitions. Word has length 509 [2018-10-24 14:11:47,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:11:47,888 INFO L481 AbstractCegarLoop]: Abstraction has 233658 states and 246264 transitions. [2018-10-24 14:11:47,888 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-10-24 14:11:47,888 INFO L276 IsEmpty]: Start isEmpty. Operand 233658 states and 246264 transitions. [2018-10-24 14:11:47,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 791 [2018-10-24 14:11:47,942 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:11:47,943 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:11:47,943 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:11:47,943 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:11:47,943 INFO L82 PathProgramCache]: Analyzing trace with hash -1473432348, now seen corresponding path program 1 times [2018-10-24 14:11:47,944 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:11:47,944 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:11:47,944 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:11:47,945 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:11:47,945 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:11:48,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 14:11:49,480 INFO L134 CoverageAnalysis]: Checked inductivity of 1584 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 1471 trivial. 0 not checked. [2018-10-24 14:11:49,480 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:11:49,480 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 14:11:49,481 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 14:11:49,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 14:11:49,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:11:49,482 INFO L87 Difference]: Start difference. First operand 233658 states and 246264 transitions. Second operand 5 states. [2018-10-24 14:12:15,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 14:12:15,296 INFO L93 Difference]: Finished difference Result 570764 states and 601028 transitions. [2018-10-24 14:12:15,296 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 14:12:15,297 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 790 [2018-10-24 14:12:15,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 14:12:15,660 INFO L225 Difference]: With dead ends: 570764 [2018-10-24 14:12:15,660 INFO L226 Difference]: Without dead ends: 337107 [2018-10-24 14:12:15,782 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-24 14:12:16,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337107 states. [2018-10-24 14:12:19,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337107 to 314069. [2018-10-24 14:12:19,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 314069 states. [2018-10-24 14:12:19,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314069 states to 314069 states and 328697 transitions. [2018-10-24 14:12:19,571 INFO L78 Accepts]: Start accepts. Automaton has 314069 states and 328697 transitions. Word has length 790 [2018-10-24 14:12:19,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 14:12:19,572 INFO L481 AbstractCegarLoop]: Abstraction has 314069 states and 328697 transitions. [2018-10-24 14:12:19,572 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 14:12:19,572 INFO L276 IsEmpty]: Start isEmpty. Operand 314069 states and 328697 transitions. [2018-10-24 14:12:19,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 913 [2018-10-24 14:12:19,618 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 14:12:19,619 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2018-10-24 14:12:19,619 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 14:12:19,619 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 14:12:19,620 INFO L82 PathProgramCache]: Analyzing trace with hash -136687427, now seen corresponding path program 1 times [2018-10-24 14:12:19,621 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 14:12:19,621 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 14:12:19,621 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:12:19,622 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 14:12:19,622 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 14:12:19,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Received shutdown request... [2018-10-24 14:12:21,682 INFO L134 CoverageAnalysis]: Checked inductivity of 1621 backedges. 1106 proven. 0 refuted. 0 times theorem prover too weak. 515 trivial. 0 not checked. [2018-10-24 14:12:21,683 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 14:12:21,683 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 14:12:21,683 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 14:12:21,684 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 14:12:21,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 14:12:21,684 INFO L87 Difference]: Start difference. First operand 314069 states and 328697 transitions. Second operand 4 states. [2018-10-24 14:12:21,685 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-10-24 14:12:21,685 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 14:12:21,690 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 14:12:21,690 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 02:12:21 BoogieIcfgContainer [2018-10-24 14:12:21,690 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 14:12:21,691 INFO L168 Benchmark]: Toolchain (without parser) took 229601.02 ms. Allocated memory was 1.5 GB in the beginning and 4.5 GB in the end (delta: 3.0 GB). Free memory was 1.4 GB in the beginning and 1.9 GB in the end (delta: -506.9 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-10-24 14:12:21,692 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 14:12:21,692 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2512.86 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 256.3 MB). Peak memory consumption was 256.3 MB. Max. memory is 7.1 GB. [2018-10-24 14:12:21,693 INFO L168 Benchmark]: Boogie Procedure Inliner took 877.52 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 811.6 MB). Free memory was 1.1 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 84.1 MB. Max. memory is 7.1 GB. [2018-10-24 14:12:21,694 INFO L168 Benchmark]: Boogie Preprocessor took 451.40 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 69.8 MB). Peak memory consumption was 69.8 MB. Max. memory is 7.1 GB. [2018-10-24 14:12:21,696 INFO L168 Benchmark]: RCFGBuilder took 15878.70 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 223.3 MB). Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 41.7 MB). Peak memory consumption was 596.8 MB. Max. memory is 7.1 GB. [2018-10-24 14:12:21,697 INFO L168 Benchmark]: TraceAbstraction took 209875.18 ms. Allocated memory was 2.5 GB in the beginning and 4.5 GB in the end (delta: 2.0 GB). Free memory was 2.0 GB in the beginning and 1.9 GB in the end (delta: 135.5 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2018-10-24 14:12:21,704 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 2512.86 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 256.3 MB). Peak memory consumption was 256.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 877.52 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 811.6 MB). Free memory was 1.1 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 84.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 451.40 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 69.8 MB). Peak memory consumption was 69.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 15878.70 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 223.3 MB). Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 41.7 MB). Peak memory consumption was 596.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 209875.18 ms. Allocated memory was 2.5 GB in the beginning and 4.5 GB in the end (delta: 2.0 GB). Free memory was 2.0 GB in the beginning and 1.9 GB in the end (delta: 135.5 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 72]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 72). Cancelled while BasicCegarLoop was constructing difference of abstraction (314069states) and FLOYD_HOARE automaton (currently 2 states, 4 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1099 locations, 1 error locations. TIMEOUT Result, 209.7s OverallTime, 12 OverallIterations, 7 TraceHistogramMax, 182.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 8630 SDtfs, 34340 SDslu, 3421 SDs, 0 SdLazy, 71086 SolverSat, 17359 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 145.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 758 GetRequests, 715 SyntacticMatches, 6 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 3.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=314069occurred in iteration=11, 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: 16.6s AutomataMinimizationTime, 11 MinimizatonAttempts, 64596 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 5.5s InterpolantComputationTime, 5013 NumberOfCodeBlocks, 5013 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 4999 ConstructedInterpolants, 0 QuantifiedInterpolants, 6418409 SizeOfPredicates, 1 NumberOfNonLiveVariables, 945 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 14 InterpolantComputations, 12 PerfectInterpolantSequences, 6905/7081 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown