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_label38_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-26 21:53:47,160 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 21:53:47,163 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 21:53:47,177 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 21:53:47,178 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 21:53:47,179 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 21:53:47,180 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 21:53:47,182 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 21:53:47,183 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 21:53:47,184 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 21:53:47,185 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 21:53:47,185 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 21:53:47,186 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 21:53:47,187 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 21:53:47,188 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 21:53:47,189 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 21:53:47,190 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 21:53:47,195 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 21:53:47,197 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 21:53:47,198 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 21:53:47,199 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 21:53:47,201 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 21:53:47,203 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-26 21:53:47,203 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-26 21:53:47,204 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-26 21:53:47,205 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-26 21:53:47,206 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-26 21:53:47,206 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-26 21:53:47,207 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-26 21:53:47,208 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-26 21:53:47,209 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-26 21:53:47,209 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-26 21:53:47,212 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 [2018-10-26 21:53:47,228 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 21:53:47,228 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 21:53:47,229 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 21:53:47,229 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 21:53:47,233 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 21:53:47,233 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 21:53:47,233 INFO L133 SettingsManager]: * Use SBE=true [2018-10-26 21:53:47,233 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 21:53:47,234 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 21:53:47,234 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 21:53:47,234 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 21:53:47,234 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 21:53:47,234 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 21:53:47,235 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 21:53:47,235 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 21:53:47,235 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 21:53:47,235 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 21:53:47,235 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 21:53:47,236 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 21:53:47,237 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 21:53:47,237 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 21:53:47,238 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 21:53:47,238 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 21:53:47,238 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-26 21:53:47,238 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 21:53:47,239 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 21:53:47,239 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 21:53:47,239 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-26 21:53:47,282 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 21:53:47,295 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 21:53:47,298 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 21:53:47,300 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 21:53:47,300 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 21:53:47,301 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label38_true-unreach-call.c [2018-10-26 21:53:47,363 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/22ad2027e/c65524a65d6a45ccadce0036d2cdfcb8/FLAG26eccf78e [2018-10-26 21:53:48,093 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 21:53:48,095 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label38_true-unreach-call.c [2018-10-26 21:53:48,116 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/22ad2027e/c65524a65d6a45ccadce0036d2cdfcb8/FLAG26eccf78e [2018-10-26 21:53:48,131 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/22ad2027e/c65524a65d6a45ccadce0036d2cdfcb8 [2018-10-26 21:53:48,142 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 21:53:48,147 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 21:53:48,148 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 21:53:48,148 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 21:53:48,152 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 21:53:48,153 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:53:48" (1/1) ... [2018-10-26 21:53:48,156 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a445e72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:53:48, skipping insertion in model container [2018-10-26 21:53:48,157 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:53:48" (1/1) ... [2018-10-26 21:53:48,167 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 21:53:48,275 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 21:53:49,308 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 21:53:49,313 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 21:53:49,706 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 21:53:49,728 INFO L193 MainTranslator]: Completed translation [2018-10-26 21:53:49,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:53:49 WrapperNode [2018-10-26 21:53:49,729 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 21:53:49,730 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 21:53:49,730 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 21:53:49,730 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 21:53:49,742 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:53:49" (1/1) ... [2018-10-26 21:53:49,793 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:53:49" (1/1) ... [2018-10-26 21:53:50,273 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 21:53:50,274 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 21:53:50,274 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 21:53:50,274 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 21:53:50,285 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:53:49" (1/1) ... [2018-10-26 21:53:50,286 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:53:49" (1/1) ... [2018-10-26 21:53:50,315 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:53:49" (1/1) ... [2018-10-26 21:53:50,316 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:53:49" (1/1) ... [2018-10-26 21:53:50,441 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:53:49" (1/1) ... [2018-10-26 21:53:50,478 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:53:49" (1/1) ... [2018-10-26 21:53:50,530 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:53:49" (1/1) ... [2018-10-26 21:53:50,561 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 21:53:50,562 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 21:53:50,562 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 21:53:50,562 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 21:53:50,563 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:53:49" (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 [2018-10-26 21:53:50,630 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-26 21:53:50,631 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 21:53:50,631 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 21:54:00,607 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 21:54:00,608 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:54:00 BoogieIcfgContainer [2018-10-26 21:54:00,609 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 21:54:00,610 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 21:54:00,610 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 21:54:00,614 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 21:54:00,614 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 09:53:48" (1/3) ... [2018-10-26 21:54:00,615 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e7c01da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:54:00, skipping insertion in model container [2018-10-26 21:54:00,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:53:49" (2/3) ... [2018-10-26 21:54:00,616 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e7c01da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:54:00, skipping insertion in model container [2018-10-26 21:54:00,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:54:00" (3/3) ... [2018-10-26 21:54:00,618 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label38_true-unreach-call.c [2018-10-26 21:54:00,630 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 21:54:00,645 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 21:54:00,663 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 21:54:00,719 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 21:54:00,720 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 21:54:00,720 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 21:54:00,720 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 21:54:00,720 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 21:54:00,720 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 21:54:00,720 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 21:54:00,721 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 21:54:00,721 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 21:54:00,763 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states. [2018-10-26 21:54:00,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-10-26 21:54:00,779 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:54:00,780 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:54:00,782 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:54:00,789 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:54:00,789 INFO L82 PathProgramCache]: Analyzing trace with hash -1884671582, now seen corresponding path program 1 times [2018-10-26 21:54:00,792 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:54:00,792 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:54:00,844 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:54:00,844 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:54:00,844 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:54:00,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:54:01,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:54:01,293 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:54:01,293 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 21:54:01,298 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 21:54:01,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 21:54:01,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:54:01,318 INFO L87 Difference]: Start difference. First operand 591 states. Second operand 4 states. [2018-10-26 21:54:11,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:54:11,003 INFO L93 Difference]: Finished difference Result 2097 states and 3909 transitions. [2018-10-26 21:54:11,004 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 21:54:11,005 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2018-10-26 21:54:11,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:54:11,044 INFO L225 Difference]: With dead ends: 2097 [2018-10-26 21:54:11,044 INFO L226 Difference]: Without dead ends: 1499 [2018-10-26 21:54:11,055 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 [2018-10-26 21:54:11,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1499 states. [2018-10-26 21:54:11,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1499 to 1485. [2018-10-26 21:54:11,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1485 states. [2018-10-26 21:54:11,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1485 states to 1485 states and 2304 transitions. [2018-10-26 21:54:11,179 INFO L78 Accepts]: Start accepts. Automaton has 1485 states and 2304 transitions. Word has length 53 [2018-10-26 21:54:11,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:54:11,180 INFO L481 AbstractCegarLoop]: Abstraction has 1485 states and 2304 transitions. [2018-10-26 21:54:11,180 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 21:54:11,180 INFO L276 IsEmpty]: Start isEmpty. Operand 1485 states and 2304 transitions. [2018-10-26 21:54:11,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2018-10-26 21:54:11,186 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:54:11,186 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 21:54:11,187 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:54:11,187 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:54:11,187 INFO L82 PathProgramCache]: Analyzing trace with hash -1097278039, now seen corresponding path program 1 times [2018-10-26 21:54:11,187 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:54:11,187 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:54:11,189 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:54:11,189 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:54:11,189 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:54:11,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:54:11,416 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:54:11,416 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 21:54:11,416 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 21:54:11,418 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 21:54:11,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 21:54:11,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 21:54:11,419 INFO L87 Difference]: Start difference. First operand 1485 states and 2304 transitions. Second operand 4 states. [2018-10-26 21:54:20,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 21:54:20,271 INFO L93 Difference]: Finished difference Result 4257 states and 6664 transitions. [2018-10-26 21:54:20,271 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 21:54:20,272 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 121 [2018-10-26 21:54:20,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 21:54:20,287 INFO L225 Difference]: With dead ends: 4257 [2018-10-26 21:54:20,287 INFO L226 Difference]: Without dead ends: 2774 [2018-10-26 21:54:20,294 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 [2018-10-26 21:54:20,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2774 states. [2018-10-26 21:54:20,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2774 to 2774. [2018-10-26 21:54:20,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2774 states. [2018-10-26 21:54:20,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2774 states to 2774 states and 3714 transitions. [2018-10-26 21:54:20,348 INFO L78 Accepts]: Start accepts. Automaton has 2774 states and 3714 transitions. Word has length 121 [2018-10-26 21:54:20,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 21:54:20,349 INFO L481 AbstractCegarLoop]: Abstraction has 2774 states and 3714 transitions. [2018-10-26 21:54:20,349 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 21:54:20,349 INFO L276 IsEmpty]: Start isEmpty. Operand 2774 states and 3714 transitions. [2018-10-26 21:54:20,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2018-10-26 21:54:20,355 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 21:54:20,355 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 21:54:20,355 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 21:54:20,356 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 21:54:20,356 INFO L82 PathProgramCache]: Analyzing trace with hash -1635175306, now seen corresponding path program 1 times [2018-10-26 21:54:20,356 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 21:54:20,356 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 21:54:20,357 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:54:20,357 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:54:20,358 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 21:54:20,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:54:20,789 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:54:20,790 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 21:54:20,790 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 [2018-10-26 21:54:20,809 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 21:54:20,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 21:54:20,905 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 21:55:25,718 WARN L179 SmtUtils]: Spent 1.07 m on a formula simplification. DAG size of input: 149 DAG size of output: 82 [2018-10-26 21:55:26,129 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-10-26 21:55:26,239 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 5 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 21:55:26,272 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-26 21:55:26,273 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 7 [2018-10-26 21:55:26,273 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-10-26 21:55:26,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-10-26 21:55:26,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-10-26 21:55:26,274 INFO L87 Difference]: Start difference. First operand 2774 states and 3714 transitions. Second operand 8 states. [2018-10-26 21:55:26,502 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2018-10-26 21:55:59,698 WARN L179 SmtUtils]: Spent 32.15 s on a formula simplification that was a NOOP. DAG size: 87 [2018-10-26 21:56:46,666 WARN L179 SmtUtils]: Spent 32.17 s on a formula simplification that was a NOOP. DAG size: 96 [2018-10-26 21:57:31,977 WARN L179 SmtUtils]: Spent 32.15 s on a formula simplification that was a NOOP. DAG size: 86 Received shutdown request... [2018-10-26 21:58:17,172 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-10-26 21:58:17,172 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-26 21:58:17,179 WARN L205 ceAbstractionStarter]: Timeout [2018-10-26 21:58:17,179 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 09:58:17 BoogieIcfgContainer [2018-10-26 21:58:17,179 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 21:58:17,180 INFO L168 Benchmark]: Toolchain (without parser) took 269037.10 ms. Allocated memory was 1.5 GB in the beginning and 2.7 GB in the end (delta: 1.2 GB). Free memory was 1.4 GB in the beginning and 2.1 GB in the end (delta: -691.6 MB). Peak memory consumption was 466.1 MB. Max. memory is 7.1 GB. [2018-10-26 21:58:17,181 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. [2018-10-26 21:58:17,182 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1581.47 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. [2018-10-26 21:58:17,183 INFO L168 Benchmark]: Boogie Procedure Inliner took 543.33 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 806.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -933.7 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. [2018-10-26 21:58:17,184 INFO L168 Benchmark]: Boogie Preprocessor took 288.09 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 27.2 MB). Peak memory consumption was 27.2 MB. Max. memory is 7.1 GB. [2018-10-26 21:58:17,185 INFO L168 Benchmark]: RCFGBuilder took 10046.73 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 476.5 MB). Peak memory consumption was 476.5 MB. Max. memory is 7.1 GB. [2018-10-26 21:58:17,186 INFO L168 Benchmark]: TraceAbstraction took 256569.20 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 350.7 MB). Free memory was 1.7 GB in the beginning and 2.1 GB in the end (delta: -399.0 MB). There was no memory consumed. Max. memory is 7.1 GB. [2018-10-26 21:58:17,192 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 1581.47 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 543.33 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 806.9 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -933.7 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 288.09 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 27.2 MB). Peak memory consumption was 27.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 10046.73 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 476.5 MB). Peak memory consumption was 476.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 256569.20 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 350.7 MB). Free memory was 1.7 GB in the beginning and 2.1 GB in the end (delta: -399.0 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 164]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 164). Cancelled while BasicCegarLoop was constructing difference of abstraction (2774states) and FLOYD_HOARE automaton (currently 13 states, 8 states before enhancement),while ReachableStatesComputation was computing reachable states (6416 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, 189.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1170 SDtfs, 4934 SDslu, 781 SDs, 0 SdLazy, 8534 SolverSat, 2399 SolverUnsat, 30 SolverUnknown, 0 SolverNotchecked, 89.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 140 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 162.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2774occurred 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, 14 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 66.2s InterpolantComputationTime, 422 NumberOfCodeBlocks, 422 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 418 ConstructedInterpolants, 6 QuantifiedInterpolants, 418936 SizeOfPredicates, 5 NumberOfNonLiveVariables, 187 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 55/150 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown