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_label40_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-23 18:28:44,975 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-23 18:28:44,978 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-23 18:28:44,991 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-23 18:28:44,992 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-23 18:28:44,993 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-23 18:28:44,994 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-23 18:28:44,996 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-23 18:28:44,998 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-23 18:28:44,998 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-23 18:28:44,999 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-23 18:28:44,999 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-23 18:28:45,000 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-23 18:28:45,001 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-23 18:28:45,002 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-23 18:28:45,003 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-23 18:28:45,004 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-23 18:28:45,006 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-23 18:28:45,008 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-23 18:28:45,010 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-23 18:28:45,011 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-23 18:28:45,012 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-23 18:28:45,015 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-23 18:28:45,015 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-23 18:28:45,015 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-23 18:28:45,016 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-23 18:28:45,017 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-23 18:28:45,018 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-23 18:28:45,019 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-23 18:28:45,020 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-23 18:28:45,020 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-23 18:28:45,021 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-23 18:28:45,024 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 18:28:45,039 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-23 18:28:45,040 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-23 18:28:45,040 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-23 18:28:45,041 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-23 18:28:45,041 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-23 18:28:45,041 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-23 18:28:45,042 INFO L133 SettingsManager]: * Use SBE=true [2018-10-23 18:28:45,042 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-23 18:28:45,042 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-23 18:28:45,042 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-23 18:28:45,043 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-23 18:28:45,043 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-23 18:28:45,043 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-23 18:28:45,043 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-23 18:28:45,043 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-23 18:28:45,044 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-23 18:28:45,044 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-23 18:28:45,044 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-23 18:28:45,044 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-23 18:28:45,044 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-23 18:28:45,045 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-23 18:28:45,045 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-23 18:28:45,045 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-23 18:28:45,045 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-23 18:28:45,045 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-23 18:28:45,046 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-23 18:28:45,046 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-23 18:28:45,046 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-23 18:28:45,089 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-23 18:28:45,103 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-23 18:28:45,106 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-23 18:28:45,108 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-23 18:28:45,108 INFO L276 PluginConnector]: CDTParser initialized [2018-10-23 18:28:45,109 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label40_false-unreach-call.c [2018-10-23 18:28:45,171 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d950e7b0f/18b6079c2df045a7a6f2d12c566443d1/FLAGb6f2a5343 [2018-10-23 18:28:45,919 INFO L298 CDTParser]: Found 1 translation units. [2018-10-23 18:28:45,920 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label40_false-unreach-call.c [2018-10-23 18:28:45,950 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d950e7b0f/18b6079c2df045a7a6f2d12c566443d1/FLAGb6f2a5343 [2018-10-23 18:28:45,967 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/d950e7b0f/18b6079c2df045a7a6f2d12c566443d1 [2018-10-23 18:28:45,978 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-23 18:28:45,980 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-23 18:28:45,981 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-23 18:28:45,982 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-23 18:28:45,988 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-23 18:28:45,989 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:28:45" (1/1) ... [2018-10-23 18:28:45,993 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37cd0be8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:28:45, skipping insertion in model container [2018-10-23 18:28:45,993 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:28:45" (1/1) ... [2018-10-23 18:28:46,004 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-23 18:28:46,119 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-23 18:28:47,109 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 18:28:47,115 INFO L189 MainTranslator]: Completed pre-run [2018-10-23 18:28:47,516 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-23 18:28:47,539 INFO L193 MainTranslator]: Completed translation [2018-10-23 18:28:47,540 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:28:47 WrapperNode [2018-10-23 18:28:47,540 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-23 18:28:47,541 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-23 18:28:47,541 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-23 18:28:47,542 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-23 18:28:47,554 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:28:47" (1/1) ... [2018-10-23 18:28:47,617 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:28:47" (1/1) ... [2018-10-23 18:28:48,050 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-23 18:28:48,051 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-23 18:28:48,051 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-23 18:28:48,051 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-23 18:28:48,061 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:28:47" (1/1) ... [2018-10-23 18:28:48,062 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:28:47" (1/1) ... [2018-10-23 18:28:48,099 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:28:47" (1/1) ... [2018-10-23 18:28:48,100 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:28:47" (1/1) ... [2018-10-23 18:28:48,213 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:28:47" (1/1) ... [2018-10-23 18:28:48,270 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:28:47" (1/1) ... [2018-10-23 18:28:48,312 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:28:47" (1/1) ... [2018-10-23 18:28:48,374 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-23 18:28:48,374 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-23 18:28:48,375 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-23 18:28:48,375 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-23 18:28:48,375 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:28:47" (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 18:28:48,440 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-23 18:28:48,440 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-23 18:28:48,441 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-23 18:28:59,218 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-23 18:28:59,219 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:28:59 BoogieIcfgContainer [2018-10-23 18:28:59,219 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-23 18:28:59,220 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-23 18:28:59,220 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-23 18:28:59,224 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-23 18:28:59,224 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 06:28:45" (1/3) ... [2018-10-23 18:28:59,225 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63b19118 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:28:59, skipping insertion in model container [2018-10-23 18:28:59,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:28:47" (2/3) ... [2018-10-23 18:28:59,226 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63b19118 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:28:59, skipping insertion in model container [2018-10-23 18:28:59,226 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:28:59" (3/3) ... [2018-10-23 18:28:59,228 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label40_false-unreach-call.c [2018-10-23 18:28:59,239 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-23 18:28:59,248 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-23 18:28:59,267 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-23 18:28:59,309 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-23 18:28:59,310 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-23 18:28:59,310 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-23 18:28:59,311 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-23 18:28:59,311 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-23 18:28:59,311 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-23 18:28:59,311 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-23 18:28:59,311 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-23 18:28:59,311 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-23 18:28:59,342 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states. [2018-10-23 18:28:59,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2018-10-23 18:28:59,350 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:28:59,351 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] [2018-10-23 18:28:59,354 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:28:59,359 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:28:59,360 INFO L82 PathProgramCache]: Analyzing trace with hash -314381782, now seen corresponding path program 1 times [2018-10-23 18:28:59,361 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:28:59,362 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:28:59,422 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:28:59,423 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:28:59,423 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:28:59,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:28:59,780 WARN L179 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-10-23 18:28:59,787 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 18:28:59,790 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:28:59,790 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:28:59,796 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:28:59,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:28:59,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:28:59,816 INFO L87 Difference]: Start difference. First operand 591 states. Second operand 4 states. [2018-10-23 18:29:10,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:29:10,005 INFO L93 Difference]: Finished difference Result 2085 states and 3898 transitions. [2018-10-23 18:29:10,006 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-23 18:29:10,008 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2018-10-23 18:29:10,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:29:10,044 INFO L225 Difference]: With dead ends: 2085 [2018-10-23 18:29:10,044 INFO L226 Difference]: Without dead ends: 1487 [2018-10-23 18:29:10,052 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 18:29:10,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1487 states. [2018-10-23 18:29:10,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1487 to 1023. [2018-10-23 18:29:10,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1023 states. [2018-10-23 18:29:10,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1023 states to 1023 states and 1623 transitions. [2018-10-23 18:29:10,175 INFO L78 Accepts]: Start accepts. Automaton has 1023 states and 1623 transitions. Word has length 23 [2018-10-23 18:29:10,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:29:10,175 INFO L481 AbstractCegarLoop]: Abstraction has 1023 states and 1623 transitions. [2018-10-23 18:29:10,175 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:29:10,176 INFO L276 IsEmpty]: Start isEmpty. Operand 1023 states and 1623 transitions. [2018-10-23 18:29:10,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2018-10-23 18:29:10,179 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:29:10,179 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-23 18:29:10,180 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:29:10,180 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:29:10,180 INFO L82 PathProgramCache]: Analyzing trace with hash 530671185, now seen corresponding path program 1 times [2018-10-23 18:29:10,180 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:29:10,180 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:29:10,182 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:29:10,182 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:29:10,182 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:29:10,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:29:10,435 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:29:10,435 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-23 18:29:10,436 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-23 18:29:10,437 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-23 18:29:10,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-23 18:29:10,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-23 18:29:10,438 INFO L87 Difference]: Start difference. First operand 1023 states and 1623 transitions. Second operand 4 states. [2018-10-23 18:29:18,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-23 18:29:18,616 INFO L93 Difference]: Finished difference Result 2908 states and 4662 transitions. [2018-10-23 18:29:18,617 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-23 18:29:18,617 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 91 [2018-10-23 18:29:18,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-23 18:29:18,630 INFO L225 Difference]: With dead ends: 2908 [2018-10-23 18:29:18,631 INFO L226 Difference]: Without dead ends: 1887 [2018-10-23 18:29:18,639 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 18:29:18,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1887 states. [2018-10-23 18:29:18,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1887 to 1887. [2018-10-23 18:29:18,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1887 states. [2018-10-23 18:29:18,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1887 states to 1887 states and 2573 transitions. [2018-10-23 18:29:18,715 INFO L78 Accepts]: Start accepts. Automaton has 1887 states and 2573 transitions. Word has length 91 [2018-10-23 18:29:18,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-23 18:29:18,715 INFO L481 AbstractCegarLoop]: Abstraction has 1887 states and 2573 transitions. [2018-10-23 18:29:18,716 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-23 18:29:18,716 INFO L276 IsEmpty]: Start isEmpty. Operand 1887 states and 2573 transitions. [2018-10-23 18:29:18,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-10-23 18:29:18,718 INFO L367 BasicCegarLoop]: Found error trace [2018-10-23 18:29:18,720 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-23 18:29:18,721 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-23 18:29:18,721 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-23 18:29:18,721 INFO L82 PathProgramCache]: Analyzing trace with hash -265539042, now seen corresponding path program 1 times [2018-10-23 18:29:18,721 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-23 18:29:18,722 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-23 18:29:18,723 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:29:18,724 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:29:18,724 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-23 18:29:18,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:29:19,116 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:29:19,117 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-23 18:29:19,117 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 18:29:19,135 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-23 18:29:19,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-23 18:29:19,212 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-23 18:29:35,757 WARN L179 SmtUtils]: Spent 16.25 s on a formula simplification. DAG size of input: 135 DAG size of output: 73 [2018-10-23 18:29:36,030 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-23 18:29:36,065 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-23 18:29:36,066 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-10-23 18:29:36,066 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-23 18:29:36,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-23 18:29:36,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-10-23 18:29:36,067 INFO L87 Difference]: Start difference. First operand 1887 states and 2573 transitions. Second operand 7 states. [2018-10-23 18:29:45,902 WARN L179 SmtUtils]: Spent 8.15 s on a formula simplification that was a NOOP. DAG size: 78 [2018-10-23 18:29:55,413 WARN L179 SmtUtils]: Spent 8.05 s on a formula simplification that was a NOOP. DAG size: 77 Received shutdown request... [2018-10-23 18:33:15,704 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-10-23 18:33:15,704 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-23 18:33:15,710 WARN L205 ceAbstractionStarter]: Timeout [2018-10-23 18:33:15,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 06:33:15 BoogieIcfgContainer [2018-10-23 18:33:15,711 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-23 18:33:15,711 INFO L168 Benchmark]: Toolchain (without parser) took 269732.59 ms. Allocated memory was 1.5 GB in the beginning and 2.7 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: -267.0 MB). Peak memory consumption was 859.2 MB. Max. memory is 7.1 GB. [2018-10-23 18:33:15,713 INFO L168 Benchmark]: CDTParser took 0.21 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 18:33:15,714 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1559.36 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 18:33:15,715 INFO L168 Benchmark]: Boogie Procedure Inliner took 509.00 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 791.2 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -916.4 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. [2018-10-23 18:33:15,716 INFO L168 Benchmark]: Boogie Preprocessor took 323.48 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: 41.7 MB). Peak memory consumption was 41.7 MB. Max. memory is 7.1 GB. [2018-10-23 18:33:15,717 INFO L168 Benchmark]: RCFGBuilder took 10844.87 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.7 GB in the end (delta: 473.6 MB). Peak memory consumption was 473.6 MB. Max. memory is 7.1 GB. [2018-10-23 18:33:15,718 INFO L168 Benchmark]: TraceAbstraction took 256490.67 ms. Allocated memory was 2.3 GB in the beginning and 2.7 GB in the end (delta: 335.0 MB). Free memory was 1.7 GB in the beginning and 1.7 GB in the end (delta: -3.3 MB). Peak memory consumption was 331.7 MB. Max. memory is 7.1 GB. [2018-10-23 18:33:15,723 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 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1559.36 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 509.00 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 791.2 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -916.4 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 323.48 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: 41.7 MB). Peak memory consumption was 41.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 10844.87 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.7 GB in the end (delta: 473.6 MB). Peak memory consumption was 473.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 256490.67 ms. Allocated memory was 2.3 GB in the beginning and 2.7 GB in the end (delta: 335.0 MB). Free memory was 1.7 GB in the beginning and 1.7 GB in the end (delta: -3.3 MB). Peak memory consumption was 331.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 74]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 74). Cancelled while BasicCegarLoop was constructing difference of abstraction (1887states) and FLOYD_HOARE automaton (currently 11 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (10380 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 591 locations, 1 error locations. TIMEOUT Result, 256.4s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 238.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1297 SDtfs, 5994 SDslu, 884 SDs, 0 SdLazy, 10040 SolverSat, 2951 SolverUnsat, 87 SolverUnknown, 0 SolverNotchecked, 217.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 108 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 33.3s 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, 0.1s SatisfiabilityAnalysisTime, 17.6s InterpolantComputationTime, 302 NumberOfCodeBlocks, 302 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 298 ConstructedInterpolants, 21 QuantifiedInterpolants, 406390 SizeOfPredicates, 1 NumberOfNonLiveVariables, 158 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 40/60 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown