java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label10_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 20:40:47,951 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 20:40:47,954 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 20:40:47,969 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 20:40:47,970 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 20:40:47,971 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 20:40:47,972 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 20:40:47,974 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 20:40:47,975 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 20:40:47,976 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 20:40:47,977 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 20:40:47,977 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 20:40:47,978 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 20:40:47,979 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 20:40:47,980 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 20:40:47,981 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 20:40:47,982 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 20:40:47,984 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 20:40:47,986 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 20:40:47,988 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 20:40:47,989 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 20:40:47,990 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 20:40:47,992 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-23 20:40:47,993 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-23 20:40:47,993 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-23 20:40:47,994 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-23 20:40:47,995 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-23 20:40:47,996 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-23 20:40:47,997 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-23 20:40:47,998 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-23 20:40:47,998 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-23 20:40:47,999 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-23 20:40:48,001 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-23 20:40:48,016 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 20:40:48,016 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 20:40:48,017 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 20:40:48,017 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-23 20:40:48,018 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-23 20:40:48,018 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-23 20:40:48,018 INFO L133 SettingsManager]: * Use SBE=true [2018-10-23 20:40:48,019 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 20:40:48,019 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 20:40:48,019 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 20:40:48,019 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 20:40:48,020 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 20:40:48,020 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 20:40:48,020 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 20:40:48,020 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 20:40:48,020 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 20:40:48,021 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 20:40:48,021 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 20:40:48,021 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 20:40:48,021 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 20:40:48,021 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 20:40:48,022 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 20:40:48,022 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 20:40:48,022 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-23 20:40:48,022 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 20:40:48,022 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 20:40:48,024 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 20:40:48,024 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 20:40:48,068 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 20:40:48,083 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 20:40:48,087 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 20:40:48,089 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 20:40:48,089 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 20:40:48,090 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label10_true-unreach-call.c [2018-10-23 20:40:48,156 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d4cb37a7d/8717199e8eba40f0adb66e015fa63029/FLAG9798f5aa5 [2018-10-23 20:40:48,922 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 20:40:48,923 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label10_true-unreach-call.c [2018-10-23 20:40:48,945 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d4cb37a7d/8717199e8eba40f0adb66e015fa63029/FLAG9798f5aa5 [2018-10-23 20:40:48,965 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d4cb37a7d/8717199e8eba40f0adb66e015fa63029 [2018-10-23 20:40:48,979 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 20:40:48,981 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 20:40:48,982 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 20:40:48,982 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 20:40:48,988 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 20:40:48,989 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:40:48" (1/1) ... [2018-10-23 20:40:48,993 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bc1ab2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:40:48, skipping insertion in model container [2018-10-23 20:40:48,993 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:40:48" (1/1) ... [2018-10-23 20:40:49,004 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 20:40:49,137 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 20:40:50,266 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 20:40:50,275 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 20:40:50,654 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 20:40:50,678 INFO L193 MainTranslator]: Completed translation [2018-10-23 20:40:50,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:40:50 WrapperNode [2018-10-23 20:40:50,679 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 20:40:50,680 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 20:40:50,680 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 20:40:50,680 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 20:40:50,690 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:40:50" (1/1) ... [2018-10-23 20:40:50,740 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:40:50" (1/1) ... [2018-10-23 20:40:51,202 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 20:40:51,203 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 20:40:51,203 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 20:40:51,203 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 20:40:51,214 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:40:50" (1/1) ... [2018-10-23 20:40:51,214 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:40:50" (1/1) ... [2018-10-23 20:40:51,248 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:40:50" (1/1) ... [2018-10-23 20:40:51,248 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:40:50" (1/1) ... [2018-10-23 20:40:51,349 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:40:50" (1/1) ... [2018-10-23 20:40:51,395 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:40:50" (1/1) ... [2018-10-23 20:40:51,437 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:40:50" (1/1) ... [2018-10-23 20:40:51,485 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 20:40:51,486 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 20:40:51,486 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 20:40:51,486 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 20:40:51,487 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:40:50" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 20:40:51,558 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-23 20:40:51,558 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 20:40:51,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 20:41:01,441 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 20:41:01,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:41:01 BoogieIcfgContainer [2018-10-23 20:41:01,443 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 20:41:01,444 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 20:41:01,444 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 20:41:01,447 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 20:41:01,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:40:48" (1/3) ... [2018-10-23 20:41:01,449 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63810170 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:41:01, skipping insertion in model container [2018-10-23 20:41:01,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:40:50" (2/3) ... [2018-10-23 20:41:01,449 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63810170 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:41:01, skipping insertion in model container [2018-10-23 20:41:01,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:41:01" (3/3) ... [2018-10-23 20:41:01,452 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label10_true-unreach-call.c [2018-10-23 20:41:01,462 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 20:41:01,473 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 20:41:01,491 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 20:41:01,535 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-23 20:41:01,536 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 20:41:01,536 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 20:41:01,536 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 20:41:01,536 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 20:41:01,537 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 20:41:01,537 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 20:41:01,537 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 20:41:01,537 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 20:41:01,568 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states. [2018-10-23 20:41:01,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-10-23 20:41:01,577 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:41:01,579 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] [2018-10-23 20:41:01,581 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:41:01,587 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:41:01,588 INFO L82 PathProgramCache]: Analyzing trace with hash 935177138, now seen corresponding path program 1 times [2018-10-23 20:41:01,590 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:41:01,591 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:41:01,641 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:41:01,642 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:41:01,642 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:41:01,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:41:02,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:41:02,079 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:41:02,080 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:41:02,085 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:41:02,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:41:02,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:41:02,104 INFO L87 Difference]: Start difference. First operand 591 states. Second operand 4 states. [2018-10-23 20:41:12,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:41:12,216 INFO L93 Difference]: Finished difference Result 2085 states and 3898 transitions. [2018-10-23 20:41:12,217 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 20:41:12,218 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 40 [2018-10-23 20:41:12,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:41:12,250 INFO L225 Difference]: With dead ends: 2085 [2018-10-23 20:41:12,250 INFO L226 Difference]: Without dead ends: 1487 [2018-10-23 20:41:12,261 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:41:12,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1487 states. [2018-10-23 20:41:12,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1487 to 1023. [2018-10-23 20:41:12,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1023 states. [2018-10-23 20:41:12,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1023 states to 1023 states and 1623 transitions. [2018-10-23 20:41:12,381 INFO L78 Accepts]: Start accepts. Automaton has 1023 states and 1623 transitions. Word has length 40 [2018-10-23 20:41:12,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:41:12,382 INFO L481 AbstractCegarLoop]: Abstraction has 1023 states and 1623 transitions. [2018-10-23 20:41:12,382 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:41:12,382 INFO L276 IsEmpty]: Start isEmpty. Operand 1023 states and 1623 transitions. [2018-10-23 20:41:12,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2018-10-23 20:41:12,387 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:41:12,387 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:41:12,388 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:41:12,388 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:41:12,388 INFO L82 PathProgramCache]: Analyzing trace with hash -1031753686, now seen corresponding path program 1 times [2018-10-23 20:41:12,388 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:41:12,388 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:41:12,393 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:41:12,393 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:41:12,393 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:41:12,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:41:12,611 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:41:12,611 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 20:41:12,611 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 20:41:12,613 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 20:41:12,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 20:41:12,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:41:12,614 INFO L87 Difference]: Start difference. First operand 1023 states and 1623 transitions. Second operand 4 states. [2018-10-23 20:41:23,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 20:41:23,040 INFO L93 Difference]: Finished difference Result 2908 states and 4662 transitions. [2018-10-23 20:41:23,040 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 20:41:23,041 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 108 [2018-10-23 20:41:23,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 20:41:23,051 INFO L225 Difference]: With dead ends: 2908 [2018-10-23 20:41:23,052 INFO L226 Difference]: Without dead ends: 1887 [2018-10-23 20:41:23,055 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 20:41:23,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1887 states. [2018-10-23 20:41:23,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1887 to 1887. [2018-10-23 20:41:23,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1887 states. [2018-10-23 20:41:23,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1887 states to 1887 states and 2573 transitions. [2018-10-23 20:41:23,100 INFO L78 Accepts]: Start accepts. Automaton has 1887 states and 2573 transitions. Word has length 108 [2018-10-23 20:41:23,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 20:41:23,101 INFO L481 AbstractCegarLoop]: Abstraction has 1887 states and 2573 transitions. [2018-10-23 20:41:23,101 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 20:41:23,101 INFO L276 IsEmpty]: Start isEmpty. Operand 1887 states and 2573 transitions. [2018-10-23 20:41:23,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2018-10-23 20:41:23,106 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 20:41:23,106 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 20:41:23,106 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 20:41:23,107 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 20:41:23,107 INFO L82 PathProgramCache]: Analyzing trace with hash -1752829921, now seen corresponding path program 1 times [2018-10-23 20:41:23,107 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 20:41:23,107 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 20:41:23,108 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:41:23,108 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:41:23,108 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 20:41:23,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:41:23,574 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:41:23,575 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 20:41:23,575 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-23 20:41:23,589 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 20:41:23,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 20:41:23,674 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 20:42:28,616 WARN L179 SmtUtils]: Spent 1.08 m on a formula simplification. DAG size of input: 149 DAG size of output: 82 [2018-10-23 20:42:29,156 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 25 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 20:42:29,177 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-23 20:42:29,178 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2018-10-23 20:42:29,178 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-23 20:42:29,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-23 20:42:29,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-10-23 20:42:29,179 INFO L87 Difference]: Start difference. First operand 1887 states and 2573 transitions. Second operand 8 states. [2018-10-23 20:43:03,058 WARN L179 SmtUtils]: Spent 32.17 s on a formula simplification that was a NOOP. DAG size: 87 [2018-10-23 20:43:40,058 WARN L179 SmtUtils]: Spent 32.15 s on a formula simplification that was a NOOP. DAG size: 87 [2018-10-23 20:44:20,187 WARN L179 SmtUtils]: Spent 32.15 s on a formula simplification that was a NOOP. DAG size: 95 Received shutdown request... [2018-10-23 20:45:15,975 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-23 20:45:15,976 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 20:45:15,982 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 20:45:15,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 08:45:15 BoogieIcfgContainer [2018-10-23 20:45:15,983 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 20:45:15,984 INFO L168 Benchmark]: Toolchain (without parser) took 267004.87 ms. Allocated memory was 1.5 GB in the beginning and 2.6 GB in the end (delta: 1.1 GB). Free memory was 1.4 GB in the beginning and 1.7 GB in the end (delta: -315.7 MB). Peak memory consumption was 784.8 MB. Max. memory is 7.1 GB. [2018-10-23 20:45:15,986 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-23 20:45:15,986 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1697.63 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. [2018-10-23 20:45:15,987 INFO L168 Benchmark]: Boogie Procedure Inliner took 522.62 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 785.4 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -905.2 MB). Peak memory consumption was 56.0 MB. Max. memory is 7.1 GB. [2018-10-23 20:45:15,988 INFO L168 Benchmark]: Boogie Preprocessor took 282.80 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 42.9 MB). Peak memory consumption was 42.9 MB. Max. memory is 7.1 GB. [2018-10-23 20:45:15,989 INFO L168 Benchmark]: RCFGBuilder took 9956.62 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 486.0 MB). Peak memory consumption was 486.0 MB. Max. memory is 7.1 GB. [2018-10-23 20:45:15,990 INFO L168 Benchmark]: TraceAbstraction took 254539.67 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 315.1 MB). Free memory was 1.7 GB in the beginning and 1.7 GB in the end (delta: -76.7 MB). Peak memory consumption was 238.4 MB. Max. memory is 7.1 GB. [2018-10-23 20:45:15,996 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1697.63 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 522.62 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 785.4 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -905.2 MB). Peak memory consumption was 56.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 282.80 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 42.9 MB). Peak memory consumption was 42.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9956.62 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 486.0 MB). Peak memory consumption was 486.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 254539.67 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 315.1 MB). Free memory was 1.7 GB in the beginning and 1.7 GB in the end (delta: -76.7 MB). Peak memory consumption was 238.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 125]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 125). Cancelled while BasicCegarLoop was constructing difference of abstraction (1887states) and FLOYD_HOARE automaton (currently 14 states, 8 states before enhancement),while ReachableStatesComputation was computing reachable states (6379 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 591 locations, 1 error locations. TIMEOUT Result, 254.4s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 187.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1195 SDtfs, 5689 SDslu, 918 SDs, 0 SdLazy, 10110 SolverSat, 2480 SolverUnsat, 27 SolverUnknown, 0 SolverNotchecked, 86.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 127 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 162.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1887occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 2 MinimizatonAttempts, 464 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 66.3s InterpolantComputationTime, 370 NumberOfCodeBlocks, 370 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 366 ConstructedInterpolants, 26 QuantifiedInterpolants, 751090 SizeOfPredicates, 5 NumberOfNonLiveVariables, 173 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 62/111 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown