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_label25_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-06 19:29:30,101 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-06 19:29:30,103 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-06 19:29:30,115 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-06 19:29:30,115 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-06 19:29:30,116 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-06 19:29:30,118 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-06 19:29:30,120 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-06 19:29:30,122 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-06 19:29:30,123 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-06 19:29:30,124 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-06 19:29:30,124 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-06 19:29:30,125 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-06 19:29:30,126 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-06 19:29:30,127 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-06 19:29:30,128 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-06 19:29:30,129 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-06 19:29:30,131 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-06 19:29:30,133 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-06 19:29:30,135 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-06 19:29:30,136 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-06 19:29:30,137 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-06 19:29:30,140 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-06 19:29:30,140 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-06 19:29:30,141 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-06 19:29:30,142 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-06 19:29:30,143 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-06 19:29:30,144 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-06 19:29:30,145 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-06 19:29:30,146 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-06 19:29:30,146 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-06 19:29:30,147 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-06 19:29:30,147 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-06 19:29:30,147 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-06 19:29:30,149 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-06 19:29:30,149 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-06 19:29:30,150 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 19:29:30,165 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-06 19:29:30,165 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-06 19:29:30,166 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-06 19:29:30,166 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-06 19:29:30,167 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-06 19:29:30,167 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-06 19:29:30,168 INFO L133 SettingsManager]: * Use SBE=true [2018-11-06 19:29:30,168 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-06 19:29:30,168 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-06 19:29:30,168 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-06 19:29:30,169 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-06 19:29:30,169 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-06 19:29:30,169 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-06 19:29:30,169 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-06 19:29:30,169 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-06 19:29:30,170 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-06 19:29:30,170 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-06 19:29:30,170 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-06 19:29:30,170 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-06 19:29:30,171 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-06 19:29:30,171 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-06 19:29:30,171 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-06 19:29:30,171 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-06 19:29:30,172 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-06 19:29:30,172 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-06 19:29:30,172 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-06 19:29:30,172 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-06 19:29:30,172 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-06 19:29:30,232 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-06 19:29:30,256 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-06 19:29:30,260 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-06 19:29:30,262 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-06 19:29:30,262 INFO L276 PluginConnector]: CDTParser initialized [2018-11-06 19:29:30,263 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label25_false-unreach-call.c [2018-11-06 19:29:30,336 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce4871d82/419cc90172894c47985ef5604f646fc4/FLAGd5251fcf1 [2018-11-06 19:29:31,068 INFO L298 CDTParser]: Found 1 translation units. [2018-11-06 19:29:31,069 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label25_false-unreach-call.c [2018-11-06 19:29:31,095 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce4871d82/419cc90172894c47985ef5604f646fc4/FLAGd5251fcf1 [2018-11-06 19:29:31,117 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce4871d82/419cc90172894c47985ef5604f646fc4 [2018-11-06 19:29:31,129 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-06 19:29:31,131 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-06 19:29:31,132 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-06 19:29:31,132 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-06 19:29:31,140 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-06 19:29:31,141 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:29:31" (1/1) ... [2018-11-06 19:29:31,144 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7293a3c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:29:31, skipping insertion in model container [2018-11-06 19:29:31,144 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:29:31" (1/1) ... [2018-11-06 19:29:31,155 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-06 19:29:31,271 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-06 19:29:32,208 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 19:29:32,212 INFO L189 MainTranslator]: Completed pre-run [2018-11-06 19:29:32,600 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 19:29:32,624 INFO L193 MainTranslator]: Completed translation [2018-11-06 19:29:32,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:29:32 WrapperNode [2018-11-06 19:29:32,625 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-06 19:29:32,626 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-06 19:29:32,626 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-06 19:29:32,627 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-06 19:29:32,641 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:29:32" (1/1) ... [2018-11-06 19:29:32,894 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:29:32" (1/1) ... [2018-11-06 19:29:33,151 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-06 19:29:33,151 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-06 19:29:33,152 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-06 19:29:33,152 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-06 19:29:33,164 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:29:32" (1/1) ... [2018-11-06 19:29:33,164 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:29:32" (1/1) ... [2018-11-06 19:29:33,197 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:29:32" (1/1) ... [2018-11-06 19:29:33,198 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:29:32" (1/1) ... [2018-11-06 19:29:33,321 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:29:32" (1/1) ... [2018-11-06 19:29:33,365 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:29:32" (1/1) ... [2018-11-06 19:29:33,424 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:29:32" (1/1) ... [2018-11-06 19:29:33,490 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-06 19:29:33,490 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-06 19:29:33,490 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-06 19:29:33,491 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-06 19:29:33,492 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:29:32" (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 19:29:33,564 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-06 19:29:33,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-06 19:29:33,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-06 19:29:42,349 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-06 19:29:42,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:29:42 BoogieIcfgContainer [2018-11-06 19:29:42,350 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-06 19:29:42,351 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-06 19:29:42,351 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-06 19:29:42,354 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-06 19:29:42,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 07:29:31" (1/3) ... [2018-11-06 19:29:42,355 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65540cb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:29:42, skipping insertion in model container [2018-11-06 19:29:42,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:29:32" (2/3) ... [2018-11-06 19:29:42,356 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65540cb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:29:42, skipping insertion in model container [2018-11-06 19:29:42,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:29:42" (3/3) ... [2018-11-06 19:29:42,358 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label25_false-unreach-call.c [2018-11-06 19:29:42,368 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-06 19:29:42,377 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-06 19:29:42,395 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-06 19:29:42,451 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-06 19:29:42,452 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-06 19:29:42,452 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-06 19:29:42,452 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-06 19:29:42,453 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-06 19:29:42,453 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-06 19:29:42,453 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-06 19:29:42,453 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-06 19:29:42,453 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-06 19:29:42,491 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states. [2018-11-06 19:29:42,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-06 19:29:42,499 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:29:42,500 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] [2018-11-06 19:29:42,502 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:29:42,508 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:29:42,509 INFO L82 PathProgramCache]: Analyzing trace with hash -1155896462, now seen corresponding path program 1 times [2018-11-06 19:29:42,511 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:29:42,511 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:29:42,565 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:29:42,565 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:29:42,565 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:29:42,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:29:42,914 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 19:29:42,921 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:29:42,922 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 19:29:42,927 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:29:42,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:29:42,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:29:42,943 INFO L87 Difference]: Start difference. First operand 591 states. Second operand 4 states. [2018-11-06 19:29:55,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:29:55,304 INFO L93 Difference]: Finished difference Result 2093 states and 3901 transitions. [2018-11-06 19:29:55,304 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:29:55,306 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2018-11-06 19:29:55,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:29:55,337 INFO L225 Difference]: With dead ends: 2093 [2018-11-06 19:29:55,337 INFO L226 Difference]: Without dead ends: 1495 [2018-11-06 19:29:55,345 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:29:55,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1495 states. [2018-11-06 19:29:55,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1495 to 1488. [2018-11-06 19:29:55,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1488 states. [2018-11-06 19:29:55,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1488 states to 1488 states and 2247 transitions. [2018-11-06 19:29:55,485 INFO L78 Accepts]: Start accepts. Automaton has 1488 states and 2247 transitions. Word has length 24 [2018-11-06 19:29:55,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:29:55,485 INFO L480 AbstractCegarLoop]: Abstraction has 1488 states and 2247 transitions. [2018-11-06 19:29:55,485 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:29:55,486 INFO L276 IsEmpty]: Start isEmpty. Operand 1488 states and 2247 transitions. [2018-11-06 19:29:55,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2018-11-06 19:29:55,490 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:29:55,490 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:29:55,491 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:29:55,491 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:29:55,491 INFO L82 PathProgramCache]: Analyzing trace with hash -85382945, now seen corresponding path program 1 times [2018-11-06 19:29:55,491 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:29:55,491 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:29:55,492 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:29:55,493 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:29:55,493 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:29:55,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:29:55,824 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 19:29:55,825 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 19:29:55,825 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 19:29:55,842 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:29:55,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:29:55,921 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 19:29:56,450 WARN L179 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 23 [2018-11-06 19:29:56,579 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 19:29:56,620 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 19:29:56,620 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-11-06 19:29:56,621 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-06 19:29:56,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-06 19:29:56,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2018-11-06 19:29:56,623 INFO L87 Difference]: Start difference. First operand 1488 states and 2247 transitions. Second operand 7 states. [2018-11-06 19:31:28,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:31:28,702 INFO L93 Difference]: Finished difference Result 9603 states and 15418 transitions. [2018-11-06 19:31:28,702 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-06 19:31:28,703 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 95 [2018-11-06 19:31:28,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:31:28,744 INFO L225 Difference]: With dead ends: 9603 [2018-11-06 19:31:28,744 INFO L226 Difference]: Without dead ends: 8117 [2018-11-06 19:31:28,752 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2018-11-06 19:31:28,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8117 states. [2018-11-06 19:31:28,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8117 to 6745. [2018-11-06 19:31:28,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6745 states. [2018-11-06 19:31:28,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6745 states to 6745 states and 8850 transitions. [2018-11-06 19:31:28,893 INFO L78 Accepts]: Start accepts. Automaton has 6745 states and 8850 transitions. Word has length 95 [2018-11-06 19:31:28,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:31:28,894 INFO L480 AbstractCegarLoop]: Abstraction has 6745 states and 8850 transitions. [2018-11-06 19:31:28,894 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-06 19:31:28,894 INFO L276 IsEmpty]: Start isEmpty. Operand 6745 states and 8850 transitions. [2018-11-06 19:31:28,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-11-06 19:31:28,903 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:31:28,904 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:31:28,904 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:31:28,904 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:31:28,904 INFO L82 PathProgramCache]: Analyzing trace with hash 1864906576, now seen corresponding path program 1 times [2018-11-06 19:31:28,905 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:31:28,905 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:31:28,906 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:31:28,906 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:31:28,907 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:31:28,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:31:29,494 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 19:31:29,494 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:31:29,495 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 19:31:29,495 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:31:29,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:31:29,496 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:31:29,496 INFO L87 Difference]: Start difference. First operand 6745 states and 8850 transitions. Second operand 4 states. [2018-11-06 19:31:37,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:31:37,823 INFO L93 Difference]: Finished difference Result 22866 states and 30630 transitions. [2018-11-06 19:31:37,824 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:31:37,824 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 158 [2018-11-06 19:31:37,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:31:37,885 INFO L225 Difference]: With dead ends: 22866 [2018-11-06 19:31:37,886 INFO L226 Difference]: Without dead ends: 16123 [2018-11-06 19:31:37,898 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:31:37,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16123 states. [2018-11-06 19:31:38,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16123 to 10956. [2018-11-06 19:31:38,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10956 states. [2018-11-06 19:31:38,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10956 states to 10956 states and 13468 transitions. [2018-11-06 19:31:38,124 INFO L78 Accepts]: Start accepts. Automaton has 10956 states and 13468 transitions. Word has length 158 [2018-11-06 19:31:38,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:31:38,125 INFO L480 AbstractCegarLoop]: Abstraction has 10956 states and 13468 transitions. [2018-11-06 19:31:38,125 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:31:38,125 INFO L276 IsEmpty]: Start isEmpty. Operand 10956 states and 13468 transitions. [2018-11-06 19:31:38,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2018-11-06 19:31:38,133 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:31:38,133 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:31:38,133 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:31:38,134 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:31:38,134 INFO L82 PathProgramCache]: Analyzing trace with hash 338777354, now seen corresponding path program 1 times [2018-11-06 19:31:38,134 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:31:38,134 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:31:38,136 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:31:38,136 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:31:38,136 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:31:38,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:31:38,443 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 174 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-11-06 19:31:38,444 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:31:38,444 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-06 19:31:38,445 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-06 19:31:38,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-06 19:31:38,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 19:31:38,445 INFO L87 Difference]: Start difference. First operand 10956 states and 13468 transitions. Second operand 3 states. [2018-11-06 19:31:41,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:31:41,977 INFO L93 Difference]: Finished difference Result 30860 states and 38236 transitions. [2018-11-06 19:31:41,982 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-06 19:31:41,982 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 244 [2018-11-06 19:31:41,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:31:42,016 INFO L225 Difference]: With dead ends: 30860 [2018-11-06 19:31:42,016 INFO L226 Difference]: Without dead ends: 15171 [2018-11-06 19:31:42,030 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 19:31:42,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15171 states. [2018-11-06 19:31:42,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15171 to 15171. [2018-11-06 19:31:42,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15171 states. [2018-11-06 19:31:42,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15171 states to 15171 states and 17153 transitions. [2018-11-06 19:31:42,242 INFO L78 Accepts]: Start accepts. Automaton has 15171 states and 17153 transitions. Word has length 244 [2018-11-06 19:31:42,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:31:42,243 INFO L480 AbstractCegarLoop]: Abstraction has 15171 states and 17153 transitions. [2018-11-06 19:31:42,243 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-06 19:31:42,243 INFO L276 IsEmpty]: Start isEmpty. Operand 15171 states and 17153 transitions. [2018-11-06 19:31:42,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2018-11-06 19:31:42,247 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:31:42,247 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:31:42,248 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:31:42,248 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:31:42,248 INFO L82 PathProgramCache]: Analyzing trace with hash -1957789817, now seen corresponding path program 1 times [2018-11-06 19:31:42,248 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:31:42,248 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:31:42,249 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:31:42,249 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:31:42,249 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:31:42,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:31:42,653 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 212 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 19:31:42,653 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 19:31:42,654 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 19:31:42,670 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:31:42,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:31:42,774 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 19:31:42,936 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 212 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2018-11-06 19:31:42,964 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 19:31:42,965 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2018-11-06 19:31:42,967 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-06 19:31:42,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-06 19:31:42,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-06 19:31:42,967 INFO L87 Difference]: Start difference. First operand 15171 states and 17153 transitions. Second operand 5 states. [2018-11-06 19:31:47,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:31:47,816 INFO L93 Difference]: Finished difference Result 36305 states and 41801 transitions. [2018-11-06 19:31:47,816 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-06 19:31:47,817 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 257 [2018-11-06 19:31:47,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:31:47,855 INFO L225 Difference]: With dead ends: 36305 [2018-11-06 19:31:47,855 INFO L226 Difference]: Without dead ends: 21563 [2018-11-06 19:31:47,868 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 261 GetRequests, 258 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 19:31:47,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21563 states. [2018-11-06 19:31:48,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21563 to 20711. [2018-11-06 19:31:48,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20711 states. [2018-11-06 19:31:48,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20711 states to 20711 states and 23242 transitions. [2018-11-06 19:31:48,144 INFO L78 Accepts]: Start accepts. Automaton has 20711 states and 23242 transitions. Word has length 257 [2018-11-06 19:31:48,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:31:48,144 INFO L480 AbstractCegarLoop]: Abstraction has 20711 states and 23242 transitions. [2018-11-06 19:31:48,144 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-06 19:31:48,145 INFO L276 IsEmpty]: Start isEmpty. Operand 20711 states and 23242 transitions. [2018-11-06 19:31:48,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2018-11-06 19:31:48,152 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:31:48,152 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 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 19:31:48,153 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:31:48,153 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:31:48,153 INFO L82 PathProgramCache]: Analyzing trace with hash 1236016666, now seen corresponding path program 1 times [2018-11-06 19:31:48,153 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:31:48,154 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:31:48,154 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:31:48,154 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:31:48,155 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:31:48,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:31:48,619 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2018-11-06 19:31:48,620 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:31:48,620 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 19:31:48,620 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:31:48,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:31:48,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:31:48,621 INFO L87 Difference]: Start difference. First operand 20711 states and 23242 transitions. Second operand 4 states. [2018-11-06 19:31:56,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:31:56,250 INFO L93 Difference]: Finished difference Result 53408 states and 60414 transitions. [2018-11-06 19:31:56,250 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:31:56,251 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 339 [2018-11-06 19:31:56,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:31:56,306 INFO L225 Difference]: With dead ends: 53408 [2018-11-06 19:31:56,306 INFO L226 Difference]: Without dead ends: 33126 [2018-11-06 19:31:56,328 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:31:56,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33126 states. [2018-11-06 19:31:56,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33126 to 27110. [2018-11-06 19:31:56,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27110 states. [2018-11-06 19:31:56,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27110 states to 27110 states and 30173 transitions. [2018-11-06 19:31:56,672 INFO L78 Accepts]: Start accepts. Automaton has 27110 states and 30173 transitions. Word has length 339 [2018-11-06 19:31:56,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:31:56,673 INFO L480 AbstractCegarLoop]: Abstraction has 27110 states and 30173 transitions. [2018-11-06 19:31:56,673 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:31:56,673 INFO L276 IsEmpty]: Start isEmpty. Operand 27110 states and 30173 transitions. [2018-11-06 19:31:56,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 349 [2018-11-06 19:31:56,683 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:31:56,683 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:31:56,684 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:31:56,684 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:31:56,684 INFO L82 PathProgramCache]: Analyzing trace with hash -192754446, now seen corresponding path program 1 times [2018-11-06 19:31:56,684 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:31:56,685 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:31:56,685 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:31:56,686 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:31:56,686 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:31:56,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:31:57,367 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2018-11-06 19:31:57,368 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:31:57,368 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 19:31:57,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:31:57,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:31:57,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:31:57,375 INFO L87 Difference]: Start difference. First operand 27110 states and 30173 transitions. Second operand 4 states. [2018-11-06 19:32:04,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:32:04,465 INFO L93 Difference]: Finished difference Result 75999 states and 85244 transitions. [2018-11-06 19:32:04,465 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:32:04,466 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 348 [2018-11-06 19:32:04,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:32:04,526 INFO L225 Difference]: With dead ends: 75999 [2018-11-06 19:32:04,527 INFO L226 Difference]: Without dead ends: 42852 [2018-11-06 19:32:04,553 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:32:04,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42852 states. [2018-11-06 19:32:04,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42852 to 42408. [2018-11-06 19:32:04,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42408 states. [2018-11-06 19:32:05,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42408 states to 42408 states and 45903 transitions. [2018-11-06 19:32:05,025 INFO L78 Accepts]: Start accepts. Automaton has 42408 states and 45903 transitions. Word has length 348 [2018-11-06 19:32:05,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:32:05,025 INFO L480 AbstractCegarLoop]: Abstraction has 42408 states and 45903 transitions. [2018-11-06 19:32:05,026 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:32:05,026 INFO L276 IsEmpty]: Start isEmpty. Operand 42408 states and 45903 transitions. [2018-11-06 19:32:05,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2018-11-06 19:32:05,039 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:32:05,040 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:32:05,040 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:32:05,041 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:32:05,041 INFO L82 PathProgramCache]: Analyzing trace with hash -1442617208, now seen corresponding path program 1 times [2018-11-06 19:32:05,041 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:32:05,041 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:32:05,042 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:32:05,042 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:32:05,042 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:32:05,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:32:06,083 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 232 proven. 83 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2018-11-06 19:32:06,083 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 19:32:06,083 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 19:32:06,092 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:32:06,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:32:06,208 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 19:32:06,613 WARN L179 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 20 [2018-11-06 19:32:07,154 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 232 proven. 83 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2018-11-06 19:32:07,184 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 19:32:07,184 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 3] total 7 [2018-11-06 19:32:07,185 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-06 19:32:07,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-06 19:32:07,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-06 19:32:07,186 INFO L87 Difference]: Start difference. First operand 42408 states and 45903 transitions. Second operand 8 states. [2018-11-06 19:32:16,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:32:16,039 INFO L93 Difference]: Finished difference Result 85239 states and 92240 transitions. [2018-11-06 19:32:16,039 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:32:16,039 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 409 [2018-11-06 19:32:16,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:32:16,080 INFO L225 Difference]: With dead ends: 85239 [2018-11-06 19:32:16,080 INFO L226 Difference]: Without dead ends: 42833 [2018-11-06 19:32:16,108 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 414 GetRequests, 407 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-06 19:32:16,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42833 states. [2018-11-06 19:32:16,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42833 to 42833. [2018-11-06 19:32:16,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42833 states. [2018-11-06 19:32:16,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42833 states to 42833 states and 46334 transitions. [2018-11-06 19:32:16,524 INFO L78 Accepts]: Start accepts. Automaton has 42833 states and 46334 transitions. Word has length 409 [2018-11-06 19:32:16,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:32:16,524 INFO L480 AbstractCegarLoop]: Abstraction has 42833 states and 46334 transitions. [2018-11-06 19:32:16,524 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-06 19:32:16,524 INFO L276 IsEmpty]: Start isEmpty. Operand 42833 states and 46334 transitions. [2018-11-06 19:32:16,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2018-11-06 19:32:16,539 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:32:16,540 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:32:16,540 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:32:16,540 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:32:16,541 INFO L82 PathProgramCache]: Analyzing trace with hash 107908636, now seen corresponding path program 1 times [2018-11-06 19:32:16,541 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:32:16,541 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:32:16,542 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:32:16,542 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:32:16,542 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:32:16,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:32:17,878 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 65 proven. 292 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 19:32:17,879 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 19:32:17,879 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 19:32:17,893 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:32:18,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:32:18,019 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 19:32:18,549 WARN L179 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 22 [2018-11-06 19:32:18,942 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 252 proven. 83 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2018-11-06 19:32:18,963 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 19:32:18,964 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 8 [2018-11-06 19:32:18,964 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-06 19:32:18,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-06 19:32:18,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2018-11-06 19:32:18,965 INFO L87 Difference]: Start difference. First operand 42833 states and 46334 transitions. Second operand 9 states. [2018-11-06 19:32:36,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:32:36,233 INFO L93 Difference]: Finished difference Result 122559 states and 132617 transitions. [2018-11-06 19:32:36,233 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-06 19:32:36,233 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 441 [2018-11-06 19:32:36,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:32:36,300 INFO L225 Difference]: With dead ends: 122559 [2018-11-06 19:32:36,301 INFO L226 Difference]: Without dead ends: 67347 [2018-11-06 19:32:36,333 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 451 GetRequests, 438 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2018-11-06 19:32:36,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67347 states. [2018-11-06 19:32:36,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67347 to 60282. [2018-11-06 19:32:36,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60282 states. [2018-11-06 19:32:36,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60282 states to 60282 states and 65024 transitions. [2018-11-06 19:32:36,892 INFO L78 Accepts]: Start accepts. Automaton has 60282 states and 65024 transitions. Word has length 441 [2018-11-06 19:32:36,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:32:36,893 INFO L480 AbstractCegarLoop]: Abstraction has 60282 states and 65024 transitions. [2018-11-06 19:32:36,893 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-06 19:32:36,893 INFO L276 IsEmpty]: Start isEmpty. Operand 60282 states and 65024 transitions. [2018-11-06 19:32:36,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 493 [2018-11-06 19:32:36,907 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:32:36,908 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2018-11-06 19:32:36,908 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:32:36,908 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:32:36,909 INFO L82 PathProgramCache]: Analyzing trace with hash 1056888352, now seen corresponding path program 1 times [2018-11-06 19:32:36,909 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:32:36,909 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:32:36,910 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:32:36,910 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:32:36,910 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:32:36,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:32:37,799 INFO L134 CoverageAnalysis]: Checked inductivity of 607 backedges. 502 proven. 83 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2018-11-06 19:32:37,799 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 19:32:37,799 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 19:32:37,808 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:32:38,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:32:38,282 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 19:32:38,899 INFO L134 CoverageAnalysis]: Checked inductivity of 607 backedges. 585 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2018-11-06 19:32:38,930 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 19:32:38,930 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2018-11-06 19:32:38,931 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-06 19:32:38,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-06 19:32:38,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2018-11-06 19:32:38,932 INFO L87 Difference]: Start difference. First operand 60282 states and 65024 transitions. Second operand 11 states. [2018-11-06 19:32:50,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:32:50,792 INFO L93 Difference]: Finished difference Result 119038 states and 128563 transitions. [2018-11-06 19:32:50,792 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-06 19:32:50,792 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 492 [2018-11-06 19:32:50,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:32:50,851 INFO L225 Difference]: With dead ends: 119038 [2018-11-06 19:32:50,851 INFO L226 Difference]: Without dead ends: 66450 [2018-11-06 19:32:50,873 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 516 GetRequests, 499 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=116, Invalid=226, Unknown=0, NotChecked=0, Total=342 [2018-11-06 19:32:50,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66450 states. [2018-11-06 19:32:51,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66450 to 62838. [2018-11-06 19:32:51,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62838 states. [2018-11-06 19:32:51,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62838 states to 62838 states and 67540 transitions. [2018-11-06 19:32:51,421 INFO L78 Accepts]: Start accepts. Automaton has 62838 states and 67540 transitions. Word has length 492 [2018-11-06 19:32:51,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:32:51,422 INFO L480 AbstractCegarLoop]: Abstraction has 62838 states and 67540 transitions. [2018-11-06 19:32:51,422 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-06 19:32:51,422 INFO L276 IsEmpty]: Start isEmpty. Operand 62838 states and 67540 transitions. [2018-11-06 19:32:51,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 498 [2018-11-06 19:32:51,431 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:32:51,432 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2018-11-06 19:32:51,432 INFO L423 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:32:51,432 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:32:51,433 INFO L82 PathProgramCache]: Analyzing trace with hash -1875244757, now seen corresponding path program 1 times [2018-11-06 19:32:51,433 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:32:51,433 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:32:51,434 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:32:51,434 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:32:51,434 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:32:51,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:32:52,117 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 22 proven. 495 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2018-11-06 19:32:52,117 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 19:32:52,117 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 19:32:52,126 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:32:52,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:32:52,251 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 19:32:58,495 WARN L179 SmtUtils]: Spent 6.16 s on a formula simplification. DAG size of input: 120 DAG size of output: 31 [2018-11-06 19:32:59,984 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 352 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2018-11-06 19:33:00,004 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 19:33:00,004 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2018-11-06 19:33:00,005 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-06 19:33:00,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-06 19:33:00,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-06 19:33:00,006 INFO L87 Difference]: Start difference. First operand 62838 states and 67540 transitions. Second operand 8 states. Received shutdown request... [2018-11-06 19:33:36,959 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-06 19:33:36,959 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-06 19:33:36,966 WARN L205 ceAbstractionStarter]: Timeout [2018-11-06 19:33:36,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 07:33:36 BoogieIcfgContainer [2018-11-06 19:33:36,966 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-06 19:33:36,967 INFO L168 Benchmark]: Toolchain (without parser) took 245838.07 ms. Allocated memory was 1.5 GB in the beginning and 3.9 GB in the end (delta: 2.4 GB). Free memory was 1.4 GB in the beginning and 2.8 GB in the end (delta: -1.4 GB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. [2018-11-06 19:33:36,969 INFO L168 Benchmark]: CDTParser took 0.24 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. [2018-11-06 19:33:36,969 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1493.55 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 19:33:36,970 INFO L168 Benchmark]: Boogie Procedure Inliner took 524.85 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 781.2 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -905.8 MB). Peak memory consumption was 42.4 MB. Max. memory is 7.1 GB. [2018-11-06 19:33:36,971 INFO L168 Benchmark]: Boogie Preprocessor took 338.32 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 41.5 MB). Peak memory consumption was 41.5 MB. Max. memory is 7.1 GB. [2018-11-06 19:33:36,972 INFO L168 Benchmark]: RCFGBuilder took 8859.84 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.7 GB in the end (delta: 473.9 MB). Peak memory consumption was 473.9 MB. Max. memory is 7.1 GB. [2018-11-06 19:33:36,972 INFO L168 Benchmark]: TraceAbstraction took 234615.63 ms. Allocated memory was 2.3 GB in the beginning and 3.9 GB in the end (delta: 1.6 GB). Free memory was 1.7 GB in the beginning and 2.8 GB in the end (delta: -1.1 GB). Peak memory consumption was 498.4 MB. Max. memory is 7.1 GB. [2018-11-06 19:33:36,978 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 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1493.55 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 524.85 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 781.2 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -905.8 MB). Peak memory consumption was 42.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 338.32 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 41.5 MB). Peak memory consumption was 41.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8859.84 ms. Allocated memory is still 2.3 GB. Free memory was 2.1 GB in the beginning and 1.7 GB in the end (delta: 473.9 MB). Peak memory consumption was 473.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 234615.63 ms. Allocated memory was 2.3 GB in the beginning and 3.9 GB in the end (delta: 1.6 GB). Free memory was 1.7 GB in the beginning and 2.8 GB in the end (delta: -1.1 GB). Peak memory consumption was 498.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 77]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 77). Cancelled while BasicCegarLoop was constructing difference of abstraction (62838states) and FLOYD_HOARE automaton (currently 10 states, 8 states before enhancement),while ReachableStatesComputation was computing reachable states (4753 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 591 locations, 1 error locations. TIMEOUT Result, 234.5s OverallTime, 11 OverallIterations, 5 TraceHistogramMax, 211.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4827 SDtfs, 24636 SDslu, 2684 SDs, 0 SdLazy, 48884 SolverSat, 8287 SolverUnsat, 61 SolverUnknown, 0 SolverNotchecked, 194.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2271 GetRequests, 2200 SyntacticMatches, 4 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 11.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=62838occurred in iteration=10, 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: 3.3s AutomataMinimizationTime, 10 MinimizatonAttempts, 24535 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 15.3s InterpolantComputationTime, 5495 NumberOfCodeBlocks, 5495 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 5478 ConstructedInterpolants, 418 QuantifiedInterpolants, 15916336 SizeOfPredicates, 6 NumberOfNonLiveVariables, 2880 ConjunctsInSsa, 27 ConjunctsInUnsatCore, 17 InterpolantComputations, 9 PerfectInterpolantSequences, 4155/5361 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown