java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-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_label09_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-06 19:29:09,019 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-06 19:29:09,021 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-06 19:29:09,036 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-06 19:29:09,037 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-06 19:29:09,038 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-06 19:29:09,040 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-06 19:29:09,043 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-06 19:29:09,046 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-06 19:29:09,047 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-06 19:29:09,049 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-06 19:29:09,049 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-06 19:29:09,050 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-06 19:29:09,058 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-06 19:29:09,059 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-06 19:29:09,062 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-06 19:29:09,063 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-06 19:29:09,065 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-06 19:29:09,068 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-06 19:29:09,071 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-06 19:29:09,074 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-06 19:29:09,076 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-06 19:29:09,079 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-06 19:29:09,079 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-06 19:29:09,079 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-06 19:29:09,081 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-06 19:29:09,082 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-06 19:29:09,084 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-06 19:29:09,086 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-06 19:29:09,087 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-06 19:29:09,087 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-06 19:29:09,088 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-11-06 19:29:09,091 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-11-06 19:29:09,105 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-06 19:29:09,106 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-06 19:29:09,107 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-06 19:29:09,107 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-06 19:29:09,107 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-06 19:29:09,108 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-06 19:29:09,108 INFO L133 SettingsManager]: * Use SBE=true [2018-11-06 19:29:09,108 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-06 19:29:09,108 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-06 19:29:09,108 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-06 19:29:09,108 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-06 19:29:09,109 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-06 19:29:09,109 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-06 19:29:09,109 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-06 19:29:09,109 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-06 19:29:09,109 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-06 19:29:09,110 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-06 19:29:09,110 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-06 19:29:09,110 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-06 19:29:09,110 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-06 19:29:09,110 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-06 19:29:09,111 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-06 19:29:09,111 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-06 19:29:09,111 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-06 19:29:09,111 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-06 19:29:09,111 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-06 19:29:09,111 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-06 19:29:09,112 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-06 19:29:09,172 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-06 19:29:09,189 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-06 19:29:09,194 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-06 19:29:09,195 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-06 19:29:09,196 INFO L276 PluginConnector]: CDTParser initialized [2018-11-06 19:29:09,197 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label09_false-unreach-call.c [2018-11-06 19:29:09,275 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3fd9fb68d/d11e3bf8cd0244c9a6ca15d115e51149/FLAGad042363e [2018-11-06 19:29:10,007 INFO L298 CDTParser]: Found 1 translation units. [2018-11-06 19:29:10,008 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label09_false-unreach-call.c [2018-11-06 19:29:10,036 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3fd9fb68d/d11e3bf8cd0244c9a6ca15d115e51149/FLAGad042363e [2018-11-06 19:29:10,058 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3fd9fb68d/d11e3bf8cd0244c9a6ca15d115e51149 [2018-11-06 19:29:10,072 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-06 19:29:10,075 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-06 19:29:10,076 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-06 19:29:10,076 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-06 19:29:10,082 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-06 19:29:10,083 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:29:10" (1/1) ... [2018-11-06 19:29:10,087 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63c9c17 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:29:10, skipping insertion in model container [2018-11-06 19:29:10,087 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:29:10" (1/1) ... [2018-11-06 19:29:10,098 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-06 19:29:10,234 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-06 19:29:11,324 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 19:29:11,330 INFO L189 MainTranslator]: Completed pre-run [2018-11-06 19:29:11,758 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 19:29:11,783 INFO L193 MainTranslator]: Completed translation [2018-11-06 19:29:11,784 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:29:11 WrapperNode [2018-11-06 19:29:11,784 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-06 19:29:11,785 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-06 19:29:11,785 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-06 19:29:11,785 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-06 19:29:11,796 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:29:11" (1/1) ... [2018-11-06 19:29:12,071 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:29:11" (1/1) ... [2018-11-06 19:29:12,346 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-06 19:29:12,347 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-06 19:29:12,347 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-06 19:29:12,347 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-06 19:29:12,359 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:29:11" (1/1) ... [2018-11-06 19:29:12,360 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:29:11" (1/1) ... [2018-11-06 19:29:12,416 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:29:11" (1/1) ... [2018-11-06 19:29:12,416 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:29:11" (1/1) ... [2018-11-06 19:29:12,520 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:29:11" (1/1) ... [2018-11-06 19:29:12,570 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:29:11" (1/1) ... [2018-11-06 19:29:12,644 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:29:11" (1/1) ... [2018-11-06 19:29:12,686 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-06 19:29:12,687 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-06 19:29:12,687 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-06 19:29:12,687 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-06 19:29:12,688 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:29:11" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-06 19:29:12,758 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-06 19:29:12,759 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-06 19:29:12,759 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-06 19:29:21,180 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-06 19:29:21,181 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:29:21 BoogieIcfgContainer [2018-11-06 19:29:21,181 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-06 19:29:21,182 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-06 19:29:21,182 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-06 19:29:21,186 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-06 19:29:21,186 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 07:29:10" (1/3) ... [2018-11-06 19:29:21,187 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cb68a90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:29:21, skipping insertion in model container [2018-11-06 19:29:21,187 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:29:11" (2/3) ... [2018-11-06 19:29:21,188 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cb68a90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:29:21, skipping insertion in model container [2018-11-06 19:29:21,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:29:21" (3/3) ... [2018-11-06 19:29:21,193 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label09_false-unreach-call.c [2018-11-06 19:29:21,204 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-06 19:29:21,217 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-06 19:29:21,236 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-06 19:29:21,294 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-06 19:29:21,295 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-06 19:29:21,295 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-06 19:29:21,296 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-06 19:29:21,296 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-06 19:29:21,296 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-06 19:29:21,296 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-06 19:29:21,296 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-06 19:29:21,296 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-06 19:29:21,336 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states. [2018-11-06 19:29:21,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2018-11-06 19:29:21,343 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:29:21,345 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:29:21,347 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:29:21,355 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:29:21,356 INFO L82 PathProgramCache]: Analyzing trace with hash 1534999810, now seen corresponding path program 1 times [2018-11-06 19:29:21,358 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:29:21,358 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:29:21,420 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:29:21,420 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:29:21,420 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:29:21,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:29:21,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 19:29:21,610 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:29:21,610 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-06 19:29:21,615 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-06 19:29:21,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-06 19:29:21,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 19:29:21,632 INFO L87 Difference]: Start difference. First operand 591 states. Second operand 3 states. [2018-11-06 19:29:27,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:29:27,011 INFO L93 Difference]: Finished difference Result 1645 states and 3027 transitions. [2018-11-06 19:29:27,011 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-06 19:29:27,013 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2018-11-06 19:29:27,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:29:27,042 INFO L225 Difference]: With dead ends: 1645 [2018-11-06 19:29:27,042 INFO L226 Difference]: Without dead ends: 1050 [2018-11-06 19:29:27,049 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 19:29:27,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1050 states. [2018-11-06 19:29:27,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1050 to 1047. [2018-11-06 19:29:27,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1047 states. [2018-11-06 19:29:27,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1047 states to 1047 states and 1612 transitions. [2018-11-06 19:29:27,153 INFO L78 Accepts]: Start accepts. Automaton has 1047 states and 1612 transitions. Word has length 13 [2018-11-06 19:29:27,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:29:27,154 INFO L480 AbstractCegarLoop]: Abstraction has 1047 states and 1612 transitions. [2018-11-06 19:29:27,154 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-06 19:29:27,154 INFO L276 IsEmpty]: Start isEmpty. Operand 1047 states and 1612 transitions. [2018-11-06 19:29:27,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2018-11-06 19:29:27,157 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:29:27,158 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-06 19:29:27,158 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:29:27,158 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:29:27,159 INFO L82 PathProgramCache]: Analyzing trace with hash 597877078, now seen corresponding path program 1 times [2018-11-06 19:29:27,159 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:29:27,159 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:29:27,160 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:29:27,160 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:29:27,160 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:29:27,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:29:27,541 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 19:29:27,542 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 19:29:27,542 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-06 19:29:27,562 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:29:27,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:29:27,641 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 19:29:28,136 WARN L179 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 23 [2018-11-06 19:29:28,189 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 19:29:28,221 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 19:29:28,221 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-11-06 19:29:28,222 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-06 19:29:28,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-06 19:29:28,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-11-06 19:29:28,226 INFO L87 Difference]: Start difference. First operand 1047 states and 1612 transitions. Second operand 7 states. [2018-11-06 19:30:33,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:30:33,642 INFO L93 Difference]: Finished difference Result 9570 states and 14977 transitions. [2018-11-06 19:30:33,643 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-06 19:30:33,643 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 84 [2018-11-06 19:30:33,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:30:33,689 INFO L225 Difference]: With dead ends: 9570 [2018-11-06 19:30:33,690 INFO L226 Difference]: Without dead ends: 8525 [2018-11-06 19:30:33,700 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-11-06 19:30:33,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8525 states. [2018-11-06 19:30:33,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8525 to 8464. [2018-11-06 19:30:33,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8464 states. [2018-11-06 19:30:33,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8464 states to 8464 states and 10728 transitions. [2018-11-06 19:30:33,869 INFO L78 Accepts]: Start accepts. Automaton has 8464 states and 10728 transitions. Word has length 84 [2018-11-06 19:30:33,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:30:33,869 INFO L480 AbstractCegarLoop]: Abstraction has 8464 states and 10728 transitions. [2018-11-06 19:30:33,869 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-06 19:30:33,870 INFO L276 IsEmpty]: Start isEmpty. Operand 8464 states and 10728 transitions. [2018-11-06 19:30:33,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2018-11-06 19:30:33,874 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:30:33,874 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-06 19:30:33,875 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:30:33,875 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:30:33,875 INFO L82 PathProgramCache]: Analyzing trace with hash 593298398, now seen corresponding path program 1 times [2018-11-06 19:30:33,875 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:30:33,875 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:30:33,876 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:30:33,877 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:30:33,877 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:30:33,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:30:34,170 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 19:30:34,170 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:30:34,170 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-06 19:30:34,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-06 19:30:34,171 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-06 19:30:34,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 19:30:34,172 INFO L87 Difference]: Start difference. First operand 8464 states and 10728 transitions. Second operand 3 states. [2018-11-06 19:30:37,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:30:37,522 INFO L93 Difference]: Finished difference Result 24177 states and 30861 transitions. [2018-11-06 19:30:37,523 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-06 19:30:37,523 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 125 [2018-11-06 19:30:37,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:30:37,562 INFO L225 Difference]: With dead ends: 24177 [2018-11-06 19:30:37,562 INFO L226 Difference]: Without dead ends: 10044 [2018-11-06 19:30:37,578 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 19:30:37,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10044 states. [2018-11-06 19:30:37,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10044 to 10039. [2018-11-06 19:30:37,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10039 states. [2018-11-06 19:30:37,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10039 states to 10039 states and 11449 transitions. [2018-11-06 19:30:37,755 INFO L78 Accepts]: Start accepts. Automaton has 10039 states and 11449 transitions. Word has length 125 [2018-11-06 19:30:37,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:30:37,756 INFO L480 AbstractCegarLoop]: Abstraction has 10039 states and 11449 transitions. [2018-11-06 19:30:37,756 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-06 19:30:37,756 INFO L276 IsEmpty]: Start isEmpty. Operand 10039 states and 11449 transitions. [2018-11-06 19:30:37,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2018-11-06 19:30:37,759 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:30:37,760 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:30:37,760 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:30:37,760 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:30:37,760 INFO L82 PathProgramCache]: Analyzing trace with hash 378122124, now seen corresponding path program 1 times [2018-11-06 19:30:37,761 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:30:37,761 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:30:37,761 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:30:37,762 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:30:37,762 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:30:37,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:30:38,096 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 7 DAG size of output: 4 [2018-11-06 19:30:38,126 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 92 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-11-06 19:30:38,126 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 19:30:38,127 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-06 19:30:38,141 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:30:38,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:30:38,205 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 19:30:38,321 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 92 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-11-06 19:30:38,350 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 19:30:38,350 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-11-06 19:30:38,351 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-06 19:30:38,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-06 19:30:38,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-06 19:30:38,352 INFO L87 Difference]: Start difference. First operand 10039 states and 11449 transitions. Second operand 5 states. [2018-11-06 19:30:42,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:30:42,357 INFO L93 Difference]: Finished difference Result 24761 states and 28715 transitions. [2018-11-06 19:30:42,357 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:30:42,357 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 180 [2018-11-06 19:30:42,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:30:42,403 INFO L225 Difference]: With dead ends: 24761 [2018-11-06 19:30:42,403 INFO L226 Difference]: Without dead ends: 15150 [2018-11-06 19:30:42,416 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-06 19:30:42,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15150 states. [2018-11-06 19:30:42,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15150 to 15150. [2018-11-06 19:30:42,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15150 states. [2018-11-06 19:30:42,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15150 states to 15150 states and 17004 transitions. [2018-11-06 19:30:42,630 INFO L78 Accepts]: Start accepts. Automaton has 15150 states and 17004 transitions. Word has length 180 [2018-11-06 19:30:42,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:30:42,631 INFO L480 AbstractCegarLoop]: Abstraction has 15150 states and 17004 transitions. [2018-11-06 19:30:42,631 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-06 19:30:42,631 INFO L276 IsEmpty]: Start isEmpty. Operand 15150 states and 17004 transitions. [2018-11-06 19:30:42,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2018-11-06 19:30:42,634 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:30:42,634 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:30:42,635 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:30:42,635 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:30:42,635 INFO L82 PathProgramCache]: Analyzing trace with hash 715563569, now seen corresponding path program 1 times [2018-11-06 19:30:42,635 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:30:42,635 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:30:42,636 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:30:42,636 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:30:42,636 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:30:42,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:30:42,995 INFO L134 CoverageAnalysis]: Checked inductivity of 259 backedges. 177 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-11-06 19:30:42,996 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:30:42,996 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 19:30:42,997 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-06 19:30:42,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-06 19:30:42,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 19:30:42,997 INFO L87 Difference]: Start difference. First operand 15150 states and 17004 transitions. Second operand 3 states. [2018-11-06 19:30:46,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:30:46,171 INFO L93 Difference]: Finished difference Result 36266 states and 41046 transitions. [2018-11-06 19:30:46,171 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-06 19:30:46,171 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 253 [2018-11-06 19:30:46,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:30:46,213 INFO L225 Difference]: With dead ends: 36266 [2018-11-06 19:30:46,214 INFO L226 Difference]: Without dead ends: 21111 [2018-11-06 19:30:46,230 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 19:30:46,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21111 states. [2018-11-06 19:30:46,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21111 to 21107. [2018-11-06 19:30:46,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21107 states. [2018-11-06 19:30:46,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21107 states to 21107 states and 23290 transitions. [2018-11-06 19:30:46,488 INFO L78 Accepts]: Start accepts. Automaton has 21107 states and 23290 transitions. Word has length 253 [2018-11-06 19:30:46,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:30:46,489 INFO L480 AbstractCegarLoop]: Abstraction has 21107 states and 23290 transitions. [2018-11-06 19:30:46,489 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-06 19:30:46,489 INFO L276 IsEmpty]: Start isEmpty. Operand 21107 states and 23290 transitions. [2018-11-06 19:30:46,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2018-11-06 19:30:46,493 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:30:46,493 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:30:46,494 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:30:46,494 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:30:46,494 INFO L82 PathProgramCache]: Analyzing trace with hash -518970657, now seen corresponding path program 1 times [2018-11-06 19:30:46,494 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:30:46,494 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:30:46,495 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:30:46,495 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:30:46,496 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:30:46,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:30:47,284 WARN L179 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 14 [2018-11-06 19:30:47,663 WARN L179 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 14 [2018-11-06 19:30:48,094 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 166 proven. 83 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-11-06 19:30:48,094 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 19:30:48,094 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-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 [2018-11-06 19:30:48,114 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:30:48,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:30:48,212 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 19:30:48,703 INFO L134 CoverageAnalysis]: Checked inductivity of 260 backedges. 166 proven. 83 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2018-11-06 19:30:48,733 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 19:30:48,733 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 3] total 8 [2018-11-06 19:30:48,734 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-06 19:30:48,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-06 19:30:48,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-11-06 19:30:48,736 INFO L87 Difference]: Start difference. First operand 21107 states and 23290 transitions. Second operand 9 states. [2018-11-06 19:30:58,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:30:58,596 INFO L93 Difference]: Finished difference Result 46058 states and 50652 transitions. [2018-11-06 19:30:58,597 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-06 19:30:58,597 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 276 [2018-11-06 19:30:58,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:30:58,635 INFO L225 Difference]: With dead ends: 46058 [2018-11-06 19:30:58,636 INFO L226 Difference]: Without dead ends: 24953 [2018-11-06 19:30:58,656 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2018-11-06 19:30:58,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24953 states. [2018-11-06 19:30:58,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24953 to 24519. [2018-11-06 19:30:58,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24519 states. [2018-11-06 19:30:58,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24519 states to 24519 states and 26801 transitions. [2018-11-06 19:30:58,908 INFO L78 Accepts]: Start accepts. Automaton has 24519 states and 26801 transitions. Word has length 276 [2018-11-06 19:30:58,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:30:58,909 INFO L480 AbstractCegarLoop]: Abstraction has 24519 states and 26801 transitions. [2018-11-06 19:30:58,909 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-06 19:30:58,909 INFO L276 IsEmpty]: Start isEmpty. Operand 24519 states and 26801 transitions. [2018-11-06 19:30:58,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2018-11-06 19:30:58,914 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:30:58,914 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:30:58,914 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:30:58,915 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:30:58,915 INFO L82 PathProgramCache]: Analyzing trace with hash 134883082, now seen corresponding path program 1 times [2018-11-06 19:30:58,915 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:30:58,915 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:30:58,916 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:30:58,916 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:30:58,916 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:30:58,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:31:00,161 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 0 proven. 280 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 19:31:00,162 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 19:31:00,162 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 19:31:00,169 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:31:00,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:31:00,244 INFO L273 TraceCheckSpWp]: Computing forward predicates... Received shutdown request... [2018-11-06 19:33:31,052 WARN L187 SmtUtils]: Removed 84 from assertion stack [2018-11-06 19:33:31,053 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-11-06 19:33:31,254 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 19:33:31,255 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-06 19:33:31,261 WARN L205 ceAbstractionStarter]: Timeout [2018-11-06 19:33:31,261 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 07:33:31 BoogieIcfgContainer [2018-11-06 19:33:31,261 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-06 19:33:31,262 INFO L168 Benchmark]: Toolchain (without parser) took 261189.35 ms. Allocated memory was 1.5 GB in the beginning and 3.0 GB in the end (delta: 1.5 GB). Free memory was 1.4 GB in the beginning and 1.7 GB in the end (delta: -307.8 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-11-06 19:33:31,266 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-06 19:33:31,266 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1708.29 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. [2018-11-06 19:33:31,267 INFO L168 Benchmark]: Boogie Procedure Inliner took 561.51 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 751.3 MB). Free memory was 1.3 GB in the beginning and 2.1 GB in the end (delta: -875.5 MB). Peak memory consumption was 42.4 MB. Max. memory is 7.1 GB. [2018-11-06 19:33:31,268 INFO L168 Benchmark]: Boogie Preprocessor took 339.79 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 42.8 MB). Peak memory consumption was 42.8 MB. Max. memory is 7.1 GB. [2018-11-06 19:33:31,272 INFO L168 Benchmark]: RCFGBuilder took 8494.46 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.6 GB in the end (delta: 471.9 MB). Peak memory consumption was 471.9 MB. Max. memory is 7.1 GB. [2018-11-06 19:33:31,273 INFO L168 Benchmark]: TraceAbstraction took 250079.33 ms. Allocated memory was 2.3 GB in the beginning and 3.0 GB in the end (delta: 775.4 MB). Free memory was 1.6 GB in the beginning and 1.7 GB in the end (delta: -84.4 MB). Peak memory consumption was 691.1 MB. Max. memory is 7.1 GB. [2018-11-06 19:33:31,280 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1708.29 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 561.51 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 751.3 MB). Free memory was 1.3 GB in the beginning and 2.1 GB in the end (delta: -875.5 MB). Peak memory consumption was 42.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 339.79 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 42.8 MB). Peak memory consumption was 42.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8494.46 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.6 GB in the end (delta: 471.9 MB). Peak memory consumption was 471.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 250079.33 ms. Allocated memory was 2.3 GB in the beginning and 3.0 GB in the end (delta: 775.4 MB). Free memory was 1.6 GB in the beginning and 1.7 GB in the end (delta: -84.4 MB). Peak memory consumption was 691.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 44]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 44). Cancelled while BasicCegarLoop was analyzing trace of length 281 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while PredicateUnifier was unifying predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 1114. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 591 locations, 1 error locations. TIMEOUT Result, 249.9s OverallTime, 7 OverallIterations, 4 TraceHistogramMax, 91.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3507 SDtfs, 10065 SDslu, 1662 SDs, 0 SdLazy, 23372 SolverSat, 3543 SolverUnsat, 26 SolverUnknown, 0 SolverNotchecked, 83.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 568 GetRequests, 541 SyntacticMatches, 2 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 2.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24519occurred 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: 1.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 507 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.6s InterpolantComputationTime, 1471 NumberOfCodeBlocks, 1471 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 1462 ConstructedInterpolants, 11 QuantifiedInterpolants, 1370001 SizeOfPredicates, 2 NumberOfNonLiveVariables, 806 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 9 InterpolantComputations, 5 PerfectInterpolantSequences, 834/1015 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown