java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label48_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 17:09:48,121 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 17:09:48,123 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 17:09:48,135 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 17:09:48,135 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 17:09:48,136 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 17:09:48,137 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 17:09:48,139 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 17:09:48,141 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 17:09:48,141 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 17:09:48,142 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 17:09:48,143 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 17:09:48,144 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 17:09:48,145 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 17:09:48,146 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 17:09:48,147 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 17:09:48,148 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 17:09:48,150 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 17:09:48,152 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 17:09:48,153 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 17:09:48,154 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 17:09:48,156 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 17:09:48,159 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 17:09:48,175 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-24 17:09:48,200 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 17:09:48,200 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 17:09:48,201 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 17:09:48,201 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 17:09:48,202 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 17:09:48,202 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 17:09:48,202 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 17:09:48,203 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 17:09:48,203 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 17:09:48,203 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 17:09:48,203 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 17:09:48,203 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 17:09:48,204 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 17:09:48,204 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 17:09:48,204 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 17:09:48,204 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 17:09:48,204 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 17:09:48,205 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 17:09:48,205 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 17:09:48,205 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 17:09:48,205 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 17:09:48,205 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 17:09:48,206 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 17:09:48,206 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 17:09:48,206 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 17:09:48,206 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 17:09:48,206 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 17:09:48,207 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 17:09:48,251 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 17:09:48,268 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 17:09:48,272 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 17:09:48,274 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 17:09:48,274 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 17:09:48,275 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label48_true-unreach-call.c [2018-10-24 17:09:48,340 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7228f4e42/36278e535e9f4261aa8e76e3f5cca187/FLAG1044bbc33 [2018-10-24 17:09:49,295 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 17:09:49,296 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label48_true-unreach-call.c [2018-10-24 17:09:49,347 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7228f4e42/36278e535e9f4261aa8e76e3f5cca187/FLAG1044bbc33 [2018-10-24 17:09:49,365 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/7228f4e42/36278e535e9f4261aa8e76e3f5cca187 [2018-10-24 17:09:49,379 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 17:09:49,383 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 17:09:49,384 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 17:09:49,385 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 17:09:49,391 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 17:09:49,393 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 05:09:49" (1/1) ... [2018-10-24 17:09:49,396 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b326c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:09:49, skipping insertion in model container [2018-10-24 17:09:49,396 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 05:09:49" (1/1) ... [2018-10-24 17:09:49,407 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 17:09:49,657 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 17:09:51,593 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 17:09:51,597 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 17:09:52,854 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 17:09:52,921 INFO L193 MainTranslator]: Completed translation [2018-10-24 17:09:52,922 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:09:52 WrapperNode [2018-10-24 17:09:52,922 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 17:09:52,923 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 17:09:52,923 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 17:09:52,923 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 17:09:52,934 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:09:52" (1/1) ... [2018-10-24 17:09:53,036 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:09:52" (1/1) ... [2018-10-24 17:09:54,089 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 17:09:54,090 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 17:09:54,090 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 17:09:54,090 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 17:09:54,102 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:09:52" (1/1) ... [2018-10-24 17:09:54,102 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:09:52" (1/1) ... [2018-10-24 17:09:54,200 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:09:52" (1/1) ... [2018-10-24 17:09:54,200 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:09:52" (1/1) ... [2018-10-24 17:09:54,533 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:09:52" (1/1) ... [2018-10-24 17:09:54,594 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:09:52" (1/1) ... [2018-10-24 17:09:54,808 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:09:52" (1/1) ... [2018-10-24 17:09:55,006 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 17:09:55,007 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 17:09:55,007 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 17:09:55,007 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 17:09:55,008 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:09:52" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 17:09:55,077 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 17:09:55,077 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 17:09:55,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 17:10:12,898 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 17:10:12,899 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 05:10:12 BoogieIcfgContainer [2018-10-24 17:10:12,899 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 17:10:12,900 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 17:10:12,900 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 17:10:12,904 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 17:10:12,904 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 05:09:49" (1/3) ... [2018-10-24 17:10:12,905 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4727c817 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 05:10:12, skipping insertion in model container [2018-10-24 17:10:12,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 05:09:52" (2/3) ... [2018-10-24 17:10:12,905 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4727c817 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 05:10:12, skipping insertion in model container [2018-10-24 17:10:12,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 05:10:12" (3/3) ... [2018-10-24 17:10:12,908 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label48_true-unreach-call.c [2018-10-24 17:10:12,918 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 17:10:12,927 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 17:10:12,946 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 17:10:12,999 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 17:10:12,999 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 17:10:12,999 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 17:10:13,000 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 17:10:13,000 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 17:10:13,000 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 17:10:13,000 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 17:10:13,000 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 17:10:13,000 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 17:10:13,056 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states. [2018-10-24 17:10:13,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-10-24 17:10:13,075 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:10:13,076 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:10:13,079 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:10:13,085 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:10:13,086 INFO L82 PathProgramCache]: Analyzing trace with hash -717159398, now seen corresponding path program 1 times [2018-10-24 17:10:13,088 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:10:13,089 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:10:13,144 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:10:13,144 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:10:13,145 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:10:13,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:10:13,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:10:13,559 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:10:13,559 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 17:10:13,564 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:10:13,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:10:13,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:10:13,584 INFO L87 Difference]: Start difference. First operand 1749 states. Second operand 4 states. [2018-10-24 17:10:40,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:10:40,860 INFO L93 Difference]: Finished difference Result 6361 states and 12176 transitions. [2018-10-24 17:10:40,860 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:10:40,862 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 66 [2018-10-24 17:10:40,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:10:41,016 INFO L225 Difference]: With dead ends: 6361 [2018-10-24 17:10:41,016 INFO L226 Difference]: Without dead ends: 4605 [2018-10-24 17:10:41,027 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 [2018-10-24 17:10:41,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4605 states. [2018-10-24 17:10:41,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4605 to 3148. [2018-10-24 17:10:41,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3148 states. [2018-10-24 17:10:41,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3148 states to 3148 states and 5068 transitions. [2018-10-24 17:10:41,223 INFO L78 Accepts]: Start accepts. Automaton has 3148 states and 5068 transitions. Word has length 66 [2018-10-24 17:10:41,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:10:41,224 INFO L481 AbstractCegarLoop]: Abstraction has 3148 states and 5068 transitions. [2018-10-24 17:10:41,224 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 17:10:41,224 INFO L276 IsEmpty]: Start isEmpty. Operand 3148 states and 5068 transitions. [2018-10-24 17:10:41,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-10-24 17:10:41,230 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:10:41,230 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:10:41,231 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:10:41,231 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:10:41,231 INFO L82 PathProgramCache]: Analyzing trace with hash 751748638, now seen corresponding path program 1 times [2018-10-24 17:10:41,231 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:10:41,231 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:10:41,232 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:10:41,232 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:10:41,233 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:10:41,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:10:41,632 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-10-24 17:10:42,310 WARN L179 SmtUtils]: Spent 624.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 19 [2018-10-24 17:10:43,054 WARN L179 SmtUtils]: Spent 666.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 24 [2018-10-24 17:10:43,232 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 4 [2018-10-24 17:10:43,402 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 63 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:10:43,403 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:10:43,403 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 17:10:43,406 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 17:10:43,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 17:10:43,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-10-24 17:10:43,406 INFO L87 Difference]: Start difference. First operand 3148 states and 5068 transitions. Second operand 6 states. [2018-10-24 17:11:15,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:11:15,030 INFO L93 Difference]: Finished difference Result 13170 states and 20020 transitions. [2018-10-24 17:11:15,033 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-24 17:11:15,034 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 134 [2018-10-24 17:11:15,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:11:15,083 INFO L225 Difference]: With dead ends: 13170 [2018-10-24 17:11:15,084 INFO L226 Difference]: Without dead ends: 10024 [2018-10-24 17:11:15,090 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-10-24 17:11:15,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10024 states. [2018-10-24 17:11:15,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10024 to 8652. [2018-10-24 17:11:15,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8652 states. [2018-10-24 17:11:15,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8652 states to 8652 states and 12036 transitions. [2018-10-24 17:11:15,269 INFO L78 Accepts]: Start accepts. Automaton has 8652 states and 12036 transitions. Word has length 134 [2018-10-24 17:11:15,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:11:15,270 INFO L481 AbstractCegarLoop]: Abstraction has 8652 states and 12036 transitions. [2018-10-24 17:11:15,270 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 17:11:15,270 INFO L276 IsEmpty]: Start isEmpty. Operand 8652 states and 12036 transitions. [2018-10-24 17:11:15,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2018-10-24 17:11:15,286 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:11:15,287 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:11:15,287 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:11:15,288 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:11:15,288 INFO L82 PathProgramCache]: Analyzing trace with hash -1819213827, now seen corresponding path program 1 times [2018-10-24 17:11:15,288 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:11:15,288 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:11:15,289 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:11:15,289 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:11:15,290 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:11:15,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:11:15,890 WARN L179 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-10-24 17:11:16,346 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 128 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2018-10-24 17:11:16,347 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:11:16,347 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 17:11:16,348 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 17:11:16,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 17:11:16,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-24 17:11:16,349 INFO L87 Difference]: Start difference. First operand 8652 states and 12036 transitions. Second operand 7 states. [2018-10-24 17:11:53,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:11:53,433 INFO L93 Difference]: Finished difference Result 26878 states and 36468 transitions. [2018-10-24 17:11:53,434 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 17:11:53,434 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 342 [2018-10-24 17:11:53,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:11:53,512 INFO L225 Difference]: With dead ends: 26878 [2018-10-24 17:11:53,513 INFO L226 Difference]: Without dead ends: 18228 [2018-10-24 17:11:53,526 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2018-10-24 17:11:53,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18228 states. [2018-10-24 17:11:53,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18228 to 15493. [2018-10-24 17:11:53,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15493 states. [2018-10-24 17:11:53,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15493 states to 15493 states and 19189 transitions. [2018-10-24 17:11:53,823 INFO L78 Accepts]: Start accepts. Automaton has 15493 states and 19189 transitions. Word has length 342 [2018-10-24 17:11:53,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:11:53,823 INFO L481 AbstractCegarLoop]: Abstraction has 15493 states and 19189 transitions. [2018-10-24 17:11:53,824 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 17:11:53,824 INFO L276 IsEmpty]: Start isEmpty. Operand 15493 states and 19189 transitions. [2018-10-24 17:11:53,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 371 [2018-10-24 17:11:53,830 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:11:53,830 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:11:53,831 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:11:53,831 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:11:53,831 INFO L82 PathProgramCache]: Analyzing trace with hash -1414872297, now seen corresponding path program 1 times [2018-10-24 17:11:53,831 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:11:53,831 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:11:53,832 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:11:53,833 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:11:53,833 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:11:53,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:11:54,372 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 127 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:11:54,372 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 17:11:54,372 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 17:11:54,391 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:11:54,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:11:54,573 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 17:11:54,802 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 192 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:11:54,835 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 17:11:54,835 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2018-10-24 17:11:54,836 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 17:11:54,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 17:11:54,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-10-24 17:11:54,840 INFO L87 Difference]: Start difference. First operand 15493 states and 19189 transitions. Second operand 5 states. [2018-10-24 17:12:33,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:12:33,317 INFO L93 Difference]: Finished difference Result 70982 states and 95208 transitions. [2018-10-24 17:12:33,318 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 17:12:33,318 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 370 [2018-10-24 17:12:33,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:12:33,435 INFO L225 Difference]: With dead ends: 70982 [2018-10-24 17:12:33,436 INFO L226 Difference]: Without dead ends: 51391 [2018-10-24 17:12:33,464 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 371 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-10-24 17:12:33,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51391 states. [2018-10-24 17:12:34,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51391 to 51309. [2018-10-24 17:12:34,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51309 states. [2018-10-24 17:12:34,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51309 states to 51309 states and 60474 transitions. [2018-10-24 17:12:34,299 INFO L78 Accepts]: Start accepts. Automaton has 51309 states and 60474 transitions. Word has length 370 [2018-10-24 17:12:34,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:12:34,299 INFO L481 AbstractCegarLoop]: Abstraction has 51309 states and 60474 transitions. [2018-10-24 17:12:34,300 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 17:12:34,300 INFO L276 IsEmpty]: Start isEmpty. Operand 51309 states and 60474 transitions. [2018-10-24 17:12:34,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2018-10-24 17:12:34,307 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:12:34,308 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:12:34,308 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:12:34,308 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:12:34,308 INFO L82 PathProgramCache]: Analyzing trace with hash -1797881201, now seen corresponding path program 1 times [2018-10-24 17:12:34,309 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:12:34,309 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:12:34,310 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:12:34,310 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:12:34,310 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:12:34,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:12:34,971 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 127 proven. 4 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-10-24 17:12:34,971 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 17:12:34,971 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 17:12:34,989 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:12:35,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:12:35,107 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 17:12:35,544 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 204 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 17:12:35,575 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 17:12:35,575 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-10-24 17:12:35,576 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 17:12:35,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 17:12:35,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:12:35,577 INFO L87 Difference]: Start difference. First operand 51309 states and 60474 transitions. Second operand 4 states. [2018-10-24 17:12:59,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:12:59,724 INFO L93 Difference]: Finished difference Result 184884 states and 220626 transitions. [2018-10-24 17:12:59,725 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 17:12:59,725 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 380 [2018-10-24 17:12:59,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:12:59,891 INFO L225 Difference]: With dead ends: 184884 [2018-10-24 17:12:59,892 INFO L226 Difference]: Without dead ends: 134943 [2018-10-24 17:12:59,945 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 380 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 17:13:00,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134943 states. [2018-10-24 17:13:01,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134943 to 86821. [2018-10-24 17:13:01,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86821 states. [2018-10-24 17:13:01,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86821 states to 86821 states and 101830 transitions. [2018-10-24 17:13:01,258 INFO L78 Accepts]: Start accepts. Automaton has 86821 states and 101830 transitions. Word has length 380 [2018-10-24 17:13:01,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:13:01,259 INFO L481 AbstractCegarLoop]: Abstraction has 86821 states and 101830 transitions. [2018-10-24 17:13:01,259 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 17:13:01,259 INFO L276 IsEmpty]: Start isEmpty. Operand 86821 states and 101830 transitions. [2018-10-24 17:13:01,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 684 [2018-10-24 17:13:01,280 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:13:01,281 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:13:01,281 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:13:01,281 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:13:01,282 INFO L82 PathProgramCache]: Analyzing trace with hash 1733795924, now seen corresponding path program 1 times [2018-10-24 17:13:01,282 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:13:01,282 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:13:01,283 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:13:01,283 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:13:01,283 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:13:01,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:13:03,132 INFO L134 CoverageAnalysis]: Checked inductivity of 731 backedges. 492 proven. 4 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2018-10-24 17:13:03,132 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 17:13:03,132 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 17:13:03,142 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:13:03,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:13:03,321 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 17:13:03,703 INFO L134 CoverageAnalysis]: Checked inductivity of 731 backedges. 496 proven. 0 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2018-10-24 17:13:03,735 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 17:13:03,736 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-10-24 17:13:03,737 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 17:13:03,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 17:13:03,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-10-24 17:13:03,738 INFO L87 Difference]: Start difference. First operand 86821 states and 101830 transitions. Second operand 5 states. [2018-10-24 17:13:27,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 17:13:27,464 INFO L93 Difference]: Finished difference Result 183205 states and 213695 transitions. [2018-10-24 17:13:27,466 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-24 17:13:27,466 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 683 [2018-10-24 17:13:27,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 17:13:27,578 INFO L225 Difference]: With dead ends: 183205 [2018-10-24 17:13:27,578 INFO L226 Difference]: Without dead ends: 93651 [2018-10-24 17:13:27,625 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 689 GetRequests, 683 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-24 17:13:27,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93651 states. [2018-10-24 17:13:28,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93651 to 90917. [2018-10-24 17:13:28,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90917 states. [2018-10-24 17:13:28,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90917 states to 90917 states and 100334 transitions. [2018-10-24 17:13:28,612 INFO L78 Accepts]: Start accepts. Automaton has 90917 states and 100334 transitions. Word has length 683 [2018-10-24 17:13:28,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 17:13:28,613 INFO L481 AbstractCegarLoop]: Abstraction has 90917 states and 100334 transitions. [2018-10-24 17:13:28,613 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 17:13:28,613 INFO L276 IsEmpty]: Start isEmpty. Operand 90917 states and 100334 transitions. [2018-10-24 17:13:28,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 768 [2018-10-24 17:13:28,639 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 17:13:28,640 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 17:13:28,640 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 17:13:28,640 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 17:13:28,647 INFO L82 PathProgramCache]: Analyzing trace with hash 892125313, now seen corresponding path program 1 times [2018-10-24 17:13:28,647 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 17:13:28,647 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 17:13:28,648 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:13:28,648 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 17:13:28,648 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 17:13:28,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 17:13:29,902 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2018-10-24 17:13:29,902 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 17:13:29,903 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 17:13:29,904 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 17:13:29,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 17:13:29,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-24 17:13:29,904 INFO L87 Difference]: Start difference. First operand 90917 states and 100334 transitions. Second operand 5 states. Received shutdown request... [2018-10-24 17:13:46,383 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 17:13:46,384 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 17:13:46,388 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 17:13:46,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 05:13:46 BoogieIcfgContainer [2018-10-24 17:13:46,389 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 17:13:46,389 INFO L168 Benchmark]: Toolchain (without parser) took 237009.60 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 61.2 MB). Peak memory consumption was 2.5 GB. Max. memory is 7.1 GB. [2018-10-24 17:13:46,391 INFO L168 Benchmark]: CDTParser took 0.23 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. [2018-10-24 17:13:46,391 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3538.11 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 392.7 MB). Peak memory consumption was 392.7 MB. Max. memory is 7.1 GB. [2018-10-24 17:13:46,392 INFO L168 Benchmark]: Boogie Procedure Inliner took 1166.94 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 872.9 MB). Free memory was 1.0 GB in the beginning and 2.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 117.0 MB. Max. memory is 7.1 GB. [2018-10-24 17:13:46,393 INFO L168 Benchmark]: Boogie Preprocessor took 916.30 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 86.1 MB). Peak memory consumption was 86.1 MB. Max. memory is 7.1 GB. [2018-10-24 17:13:46,394 INFO L168 Benchmark]: RCFGBuilder took 17892.36 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 277.3 MB). Free memory was 2.1 GB in the beginning and 2.5 GB in the end (delta: -389.9 MB). Peak memory consumption was 866.3 MB. Max. memory is 7.1 GB. [2018-10-24 17:13:46,395 INFO L168 Benchmark]: TraceAbstraction took 213488.73 ms. Allocated memory was 2.7 GB in the beginning and 4.0 GB in the end (delta: 1.3 GB). Free memory was 2.5 GB in the beginning and 1.4 GB in the end (delta: 1.1 GB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2018-10-24 17:13:46,402 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 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 3538.11 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 392.7 MB). Peak memory consumption was 392.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 1166.94 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 872.9 MB). Free memory was 1.0 GB in the beginning and 2.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 117.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 916.30 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 86.1 MB). Peak memory consumption was 86.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 17892.36 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 277.3 MB). Free memory was 2.1 GB in the beginning and 2.5 GB in the end (delta: -389.9 MB). Peak memory consumption was 866.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 213488.73 ms. Allocated memory was 2.7 GB in the beginning and 4.0 GB in the end (delta: 1.3 GB). Free memory was 2.5 GB in the beginning and 1.4 GB in the end (delta: 1.1 GB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 211]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 211). Cancelled while BasicCegarLoop was constructing difference of abstraction (90917states) and FLOYD_HOARE automaton (currently 5 states, 5 states before enhancement),while ReachableStatesComputation was computing reachable states (176520 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1749 locations, 1 error locations. TIMEOUT Result, 213.3s OverallTime, 7 OverallIterations, 4 TraceHistogramMax, 199.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 8820 SDtfs, 48174 SDslu, 3899 SDs, 0 SdLazy, 91089 SolverSat, 18697 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 170.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1475 GetRequests, 1439 SyntacticMatches, 6 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 3.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=90917occurred in iteration=6, 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: 3.7s AutomataMinimizationTime, 6 MinimizatonAttempts, 56502 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 6.1s InterpolantComputationTime, 4175 NumberOfCodeBlocks, 4175 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 4165 ConstructedInterpolants, 0 QuantifiedInterpolants, 7475100 SizeOfPredicates, 6 NumberOfNonLiveVariables, 1727 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 10 InterpolantComputations, 7 PerfectInterpolantSequences, 2773/2846 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown