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/Problem19_label58_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-06 19:46:30,856 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-06 19:46:30,858 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-06 19:46:30,870 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-06 19:46:30,871 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-06 19:46:30,872 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-06 19:46:30,873 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-06 19:46:30,875 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-06 19:46:30,877 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-06 19:46:30,878 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-06 19:46:30,880 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-06 19:46:30,880 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-06 19:46:30,881 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-06 19:46:30,882 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-06 19:46:30,885 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-06 19:46:30,887 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-06 19:46:30,887 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-06 19:46:30,892 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-06 19:46:30,897 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-06 19:46:30,898 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-06 19:46:30,903 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-06 19:46:30,904 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-06 19:46:30,906 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-06 19:46:30,915 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 19:46:30,932 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-06 19:46:30,932 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-06 19:46:30,933 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-06 19:46:30,933 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-06 19:46:30,934 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-06 19:46:30,934 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-06 19:46:30,934 INFO L133 SettingsManager]: * Use SBE=true [2018-11-06 19:46:30,934 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-06 19:46:30,935 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-06 19:46:30,935 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-06 19:46:30,935 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-06 19:46:30,935 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-06 19:46:30,935 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-06 19:46:30,936 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-06 19:46:30,936 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-06 19:46:30,936 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-06 19:46:30,936 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-06 19:46:30,936 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-06 19:46:30,937 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-06 19:46:30,937 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-06 19:46:30,937 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-06 19:46:30,937 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-06 19:46:30,937 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-06 19:46:30,937 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-06 19:46:30,938 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-06 19:46:30,938 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-06 19:46:30,938 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-06 19:46:30,938 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-06 19:46:30,983 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-06 19:46:30,996 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-06 19:46:31,000 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-06 19:46:31,001 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-06 19:46:31,002 INFO L276 PluginConnector]: CDTParser initialized [2018-11-06 19:46:31,003 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label58_false-unreach-call.c [2018-11-06 19:46:31,067 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35f63690d/9a07b40d3d7b4fd18ef6f013a6d911f7/FLAG6c776e720 [2018-11-06 19:46:31,916 INFO L298 CDTParser]: Found 1 translation units. [2018-11-06 19:46:31,917 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label58_false-unreach-call.c [2018-11-06 19:46:31,961 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35f63690d/9a07b40d3d7b4fd18ef6f013a6d911f7/FLAG6c776e720 [2018-11-06 19:46:31,978 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35f63690d/9a07b40d3d7b4fd18ef6f013a6d911f7 [2018-11-06 19:46:31,990 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-06 19:46:31,991 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-06 19:46:31,992 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-06 19:46:31,993 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-06 19:46:31,997 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-06 19:46:31,998 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:46:31" (1/1) ... [2018-11-06 19:46:32,001 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@516be650 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:46:31, skipping insertion in model container [2018-11-06 19:46:32,001 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:46:31" (1/1) ... [2018-11-06 19:46:32,012 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-06 19:46:32,284 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-06 19:46:34,272 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 19:46:34,278 INFO L189 MainTranslator]: Completed pre-run [2018-11-06 19:46:35,393 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 19:46:35,452 INFO L193 MainTranslator]: Completed translation [2018-11-06 19:46:35,453 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:46:35 WrapperNode [2018-11-06 19:46:35,453 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-06 19:46:35,455 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-06 19:46:35,455 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-06 19:46:35,455 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-06 19:46:35,467 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:46:35" (1/1) ... [2018-11-06 19:46:35,982 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:46:35" (1/1) ... [2018-11-06 19:46:36,648 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-06 19:46:36,649 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-06 19:46:36,649 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-06 19:46:36,649 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-06 19:46:36,663 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:46:35" (1/1) ... [2018-11-06 19:46:36,663 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:46:35" (1/1) ... [2018-11-06 19:46:36,820 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:46:35" (1/1) ... [2018-11-06 19:46:36,821 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:46:35" (1/1) ... [2018-11-06 19:46:37,203 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:46:35" (1/1) ... [2018-11-06 19:46:37,266 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:46:35" (1/1) ... [2018-11-06 19:46:37,468 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:46:35" (1/1) ... [2018-11-06 19:46:37,610 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-06 19:46:37,611 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-06 19:46:37,611 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-06 19:46:37,611 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-06 19:46:37,612 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:46:35" (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 19:46:37,685 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-06 19:46:37,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-06 19:46:37,685 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-06 19:46:54,096 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-06 19:46:54,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:46:54 BoogieIcfgContainer [2018-11-06 19:46:54,096 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-06 19:46:54,097 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-06 19:46:54,098 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-06 19:46:54,101 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-06 19:46:54,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 07:46:31" (1/3) ... [2018-11-06 19:46:54,102 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fc436b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:46:54, skipping insertion in model container [2018-11-06 19:46:54,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:46:35" (2/3) ... [2018-11-06 19:46:54,103 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fc436b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:46:54, skipping insertion in model container [2018-11-06 19:46:54,103 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:46:54" (3/3) ... [2018-11-06 19:46:54,105 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label58_false-unreach-call.c [2018-11-06 19:46:54,115 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-06 19:46:54,126 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-06 19:46:54,144 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-06 19:46:54,194 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-06 19:46:54,195 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-06 19:46:54,195 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-06 19:46:54,195 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-06 19:46:54,196 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-06 19:46:54,196 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-06 19:46:54,196 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-06 19:46:54,196 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-06 19:46:54,196 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-06 19:46:54,252 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states. [2018-11-06 19:46:54,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-06 19:46:54,260 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:46:54,261 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:46:54,264 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:46:54,270 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:46:54,270 INFO L82 PathProgramCache]: Analyzing trace with hash 340357962, now seen corresponding path program 1 times [2018-11-06 19:46:54,274 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:46:54,275 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:46:54,331 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:46:54,332 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:46:54,332 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:46:54,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:46:54,881 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 19:46:54,884 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:46:54,884 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 19:46:54,888 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:46:54,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:46:54,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:46:54,903 INFO L87 Difference]: Start difference. First operand 1749 states. Second operand 4 states. [2018-11-06 19:47:17,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:47:17,052 INFO L93 Difference]: Finished difference Result 6409 states and 12226 transitions. [2018-11-06 19:47:17,052 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:47:17,054 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2018-11-06 19:47:17,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:47:17,107 INFO L225 Difference]: With dead ends: 6409 [2018-11-06 19:47:17,108 INFO L226 Difference]: Without dead ends: 4653 [2018-11-06 19:47:17,119 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:47:17,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4653 states. [2018-11-06 19:47:17,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4653 to 4617. [2018-11-06 19:47:17,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4617 states. [2018-11-06 19:47:17,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4617 states to 4617 states and 7623 transitions. [2018-11-06 19:47:17,324 INFO L78 Accepts]: Start accepts. Automaton has 4617 states and 7623 transitions. Word has length 14 [2018-11-06 19:47:17,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:47:17,325 INFO L480 AbstractCegarLoop]: Abstraction has 4617 states and 7623 transitions. [2018-11-06 19:47:17,325 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:47:17,325 INFO L276 IsEmpty]: Start isEmpty. Operand 4617 states and 7623 transitions. [2018-11-06 19:47:17,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2018-11-06 19:47:17,329 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:47:17,329 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-06 19:47:17,329 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:47:17,330 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:47:17,330 INFO L82 PathProgramCache]: Analyzing trace with hash -1653441906, now seen corresponding path program 1 times [2018-11-06 19:47:17,330 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:47:17,330 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:47:17,332 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:47:17,332 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:47:17,332 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:47:17,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:47:17,881 WARN L179 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 19 [2018-11-06 19:47:18,623 WARN L179 SmtUtils]: Spent 669.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 24 [2018-11-06 19:47:18,770 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 19:47:18,771 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:47:18,771 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-06 19:47:18,773 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-06 19:47:18,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-06 19:47:18,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-11-06 19:47:18,773 INFO L87 Difference]: Start difference. First operand 4617 states and 7623 transitions. Second operand 6 states. [2018-11-06 19:47:49,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:47:49,442 INFO L93 Difference]: Finished difference Result 20192 states and 32413 transitions. [2018-11-06 19:47:49,448 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-06 19:47:49,448 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 82 [2018-11-06 19:47:49,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:47:49,519 INFO L225 Difference]: With dead ends: 20192 [2018-11-06 19:47:49,520 INFO L226 Difference]: Without dead ends: 15577 [2018-11-06 19:47:49,529 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-11-06 19:47:49,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15577 states. [2018-11-06 19:47:49,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15577 to 14204. [2018-11-06 19:47:49,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14204 states. [2018-11-06 19:47:49,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14204 states to 14204 states and 19574 transitions. [2018-11-06 19:47:49,795 INFO L78 Accepts]: Start accepts. Automaton has 14204 states and 19574 transitions. Word has length 82 [2018-11-06 19:47:49,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:47:49,796 INFO L480 AbstractCegarLoop]: Abstraction has 14204 states and 19574 transitions. [2018-11-06 19:47:49,796 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-06 19:47:49,796 INFO L276 IsEmpty]: Start isEmpty. Operand 14204 states and 19574 transitions. [2018-11-06 19:47:49,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2018-11-06 19:47:49,805 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:47:49,806 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:47:49,806 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:47:49,807 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:47:49,807 INFO L82 PathProgramCache]: Analyzing trace with hash 1315430701, now seen corresponding path program 1 times [2018-11-06 19:47:49,807 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:47:49,807 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:47:49,808 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:47:49,808 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:47:49,808 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:47:49,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:47:50,305 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2018-11-06 19:47:50,834 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-11-06 19:47:50,835 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:47:50,835 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-06 19:47:50,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-06 19:47:50,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-06 19:47:50,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-11-06 19:47:50,837 INFO L87 Difference]: Start difference. First operand 14204 states and 19574 transitions. Second operand 7 states. [2018-11-06 19:48:23,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:48:23,767 INFO L93 Difference]: Finished difference Result 40712 states and 55789 transitions. [2018-11-06 19:48:23,769 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-06 19:48:23,769 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 290 [2018-11-06 19:48:23,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:48:23,843 INFO L225 Difference]: With dead ends: 40712 [2018-11-06 19:48:23,843 INFO L226 Difference]: Without dead ends: 26510 [2018-11-06 19:48:23,862 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2018-11-06 19:48:23,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26510 states. [2018-11-06 19:48:24,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26510 to 23774. [2018-11-06 19:48:24,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23774 states. [2018-11-06 19:48:24,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23774 states to 23774 states and 29481 transitions. [2018-11-06 19:48:24,274 INFO L78 Accepts]: Start accepts. Automaton has 23774 states and 29481 transitions. Word has length 290 [2018-11-06 19:48:24,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:48:24,275 INFO L480 AbstractCegarLoop]: Abstraction has 23774 states and 29481 transitions. [2018-11-06 19:48:24,275 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-06 19:48:24,276 INFO L276 IsEmpty]: Start isEmpty. Operand 23774 states and 29481 transitions. [2018-11-06 19:48:24,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 319 [2018-11-06 19:48:24,280 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:48:24,280 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:48:24,280 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:48:24,281 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:48:24,281 INFO L82 PathProgramCache]: Analyzing trace with hash 557595975, now seen corresponding path program 1 times [2018-11-06 19:48:24,281 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:48:24,281 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:48:24,282 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:48:24,282 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:48:24,282 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:48:24,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:48:24,772 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 23 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 19:48:24,773 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 19:48:24,773 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 19:48:24,790 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:48:24,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:48:24,952 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 19:48:25,149 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 19:48:25,178 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 19:48:25,179 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2018-11-06 19:48:25,180 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-06 19:48:25,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-06 19:48:25,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-06 19:48:25,181 INFO L87 Difference]: Start difference. First operand 23774 states and 29481 transitions. Second operand 5 states. [2018-11-06 19:48:57,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:48:57,296 INFO L93 Difference]: Finished difference Result 109446 states and 147487 transitions. [2018-11-06 19:48:57,297 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-06 19:48:57,297 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 318 [2018-11-06 19:48:57,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:48:57,460 INFO L225 Difference]: With dead ends: 109446 [2018-11-06 19:48:57,461 INFO L226 Difference]: Without dead ends: 76108 [2018-11-06 19:48:57,511 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 319 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-11-06 19:48:57,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76108 states. [2018-11-06 19:48:58,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76108 to 76005. [2018-11-06 19:48:58,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76005 states. [2018-11-06 19:48:58,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76005 states to 76005 states and 90448 transitions. [2018-11-06 19:48:58,839 INFO L78 Accepts]: Start accepts. Automaton has 76005 states and 90448 transitions. Word has length 318 [2018-11-06 19:48:58,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:48:58,840 INFO L480 AbstractCegarLoop]: Abstraction has 76005 states and 90448 transitions. [2018-11-06 19:48:58,840 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-06 19:48:58,840 INFO L276 IsEmpty]: Start isEmpty. Operand 76005 states and 90448 transitions. [2018-11-06 19:48:58,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2018-11-06 19:48:58,845 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:48:58,845 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:48:58,846 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:48:58,846 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:48:58,846 INFO L82 PathProgramCache]: Analyzing trace with hash -405657409, now seen corresponding path program 1 times [2018-11-06 19:48:58,846 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:48:58,846 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:48:58,847 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:48:58,847 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:48:58,848 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:48:58,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:48:59,396 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 23 proven. 4 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-11-06 19:48:59,397 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 19:48:59,397 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 19:48:59,414 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:48:59,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:48:59,517 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 19:48:59,629 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 100 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 19:48:59,660 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 19:48:59,661 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-11-06 19:48:59,661 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:48:59,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:48:59,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:48:59,662 INFO L87 Difference]: Start difference. First operand 76005 states and 90448 transitions. Second operand 4 states. [2018-11-06 19:49:20,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:49:20,740 INFO L93 Difference]: Finished difference Result 271198 states and 327262 transitions. [2018-11-06 19:49:20,741 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:49:20,741 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 328 [2018-11-06 19:49:20,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:49:21,029 INFO L225 Difference]: With dead ends: 271198 [2018-11-06 19:49:21,029 INFO L226 Difference]: Without dead ends: 196561 [2018-11-06 19:49:21,130 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 328 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 19:49:21,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196561 states. [2018-11-06 19:49:23,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196561 to 126540. [2018-11-06 19:49:23,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126540 states. [2018-11-06 19:49:23,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126540 states to 126540 states and 149973 transitions. [2018-11-06 19:49:23,483 INFO L78 Accepts]: Start accepts. Automaton has 126540 states and 149973 transitions. Word has length 328 [2018-11-06 19:49:23,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:49:23,483 INFO L480 AbstractCegarLoop]: Abstraction has 126540 states and 149973 transitions. [2018-11-06 19:49:23,483 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:49:23,483 INFO L276 IsEmpty]: Start isEmpty. Operand 126540 states and 149973 transitions. [2018-11-06 19:49:23,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 795 [2018-11-06 19:49:23,513 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:49:23,514 INFO L375 BasicCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:49:23,514 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:49:23,515 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:49:23,515 INFO L82 PathProgramCache]: Analyzing trace with hash -1765513336, now seen corresponding path program 1 times [2018-11-06 19:49:23,515 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:49:23,515 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:49:23,516 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:49:23,516 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:49:23,516 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:49:23,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:49:24,122 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2018-11-06 19:49:24,605 WARN L179 SmtUtils]: Spent 430.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 15 [2018-11-06 19:49:26,032 INFO L134 CoverageAnalysis]: Checked inductivity of 998 backedges. 614 proven. 4 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2018-11-06 19:49:26,032 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 19:49:26,033 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 19:49:26,044 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:49:26,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:49:26,236 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 19:49:26,572 INFO L134 CoverageAnalysis]: Checked inductivity of 998 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 951 trivial. 0 not checked. [2018-11-06 19:49:26,592 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 19:49:26,593 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2018-11-06 19:49:26,594 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-06 19:49:26,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-06 19:49:26,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-06 19:49:26,595 INFO L87 Difference]: Start difference. First operand 126540 states and 149973 transitions. Second operand 6 states. [2018-11-06 19:49:55,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:49:55,898 INFO L93 Difference]: Finished difference Result 328218 states and 392967 transitions. [2018-11-06 19:49:55,899 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-06 19:49:55,899 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 794 [2018-11-06 19:49:55,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:49:56,114 INFO L225 Difference]: With dead ends: 328218 [2018-11-06 19:49:56,114 INFO L226 Difference]: Without dead ends: 196211 [2018-11-06 19:49:56,187 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 800 GetRequests, 794 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-06 19:49:56,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196211 states. [2018-11-06 19:49:57,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196211 to 155216. [2018-11-06 19:49:57,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155216 states. [2018-11-06 19:49:57,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155216 states to 155216 states and 171550 transitions. [2018-11-06 19:49:57,817 INFO L78 Accepts]: Start accepts. Automaton has 155216 states and 171550 transitions. Word has length 794 [2018-11-06 19:49:57,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:49:57,818 INFO L480 AbstractCegarLoop]: Abstraction has 155216 states and 171550 transitions. [2018-11-06 19:49:57,818 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-06 19:49:57,818 INFO L276 IsEmpty]: Start isEmpty. Operand 155216 states and 171550 transitions. [2018-11-06 19:49:57,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1085 [2018-11-06 19:49:57,867 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:49:57,868 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:49:57,868 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:49:57,869 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:49:57,869 INFO L82 PathProgramCache]: Analyzing trace with hash 510526005, now seen corresponding path program 1 times [2018-11-06 19:49:57,869 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:49:57,869 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:49:57,870 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:49:57,870 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:49:57,871 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:49:58,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:50:00,042 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 486 trivial. 0 not checked. [2018-11-06 19:50:00,042 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:50:00,043 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 19:50:00,043 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:50:00,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:50:00,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:50:00,044 INFO L87 Difference]: Start difference. First operand 155216 states and 171550 transitions. Second operand 4 states. [2018-11-06 19:50:15,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:50:15,350 INFO L93 Difference]: Finished difference Result 445854 states and 496053 transitions. [2018-11-06 19:50:15,350 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:50:15,350 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1084 [2018-11-06 19:50:15,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:50:15,674 INFO L225 Difference]: With dead ends: 445854 [2018-11-06 19:50:15,675 INFO L226 Difference]: Without dead ends: 292006 [2018-11-06 19:50:15,770 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 4 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:50:15,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292006 states. [2018-11-06 19:50:18,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292006 to 278164. [2018-11-06 19:50:18,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278164 states. [2018-11-06 19:50:19,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278164 states to 278164 states and 304089 transitions. [2018-11-06 19:50:19,268 INFO L78 Accepts]: Start accepts. Automaton has 278164 states and 304089 transitions. Word has length 1084 [2018-11-06 19:50:19,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:50:19,269 INFO L480 AbstractCegarLoop]: Abstraction has 278164 states and 304089 transitions. [2018-11-06 19:50:19,269 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:50:19,269 INFO L276 IsEmpty]: Start isEmpty. Operand 278164 states and 304089 transitions. [2018-11-06 19:50:19,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1196 [2018-11-06 19:50:19,292 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:50:19,294 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:50:19,294 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:50:19,294 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:50:19,295 INFO L82 PathProgramCache]: Analyzing trace with hash -877983521, now seen corresponding path program 1 times [2018-11-06 19:50:19,295 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:50:19,295 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:50:19,295 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:50:19,296 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:50:19,296 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:50:19,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:50:20,150 WARN L179 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 7 Received shutdown request... [2018-11-06 19:50:23,043 INFO L134 CoverageAnalysis]: Checked inductivity of 677 backedges. 191 proven. 0 refuted. 0 times theorem prover too weak. 486 trivial. 0 not checked. [2018-11-06 19:50:23,043 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:50:23,043 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-06 19:50:23,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-06 19:50:23,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-06 19:50:23,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-11-06 19:50:23,045 INFO L87 Difference]: Start difference. First operand 278164 states and 304089 transitions. Second operand 6 states. [2018-11-06 19:50:23,046 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-06 19:50:23,046 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-06 19:50:23,052 WARN L205 ceAbstractionStarter]: Timeout [2018-11-06 19:50:23,053 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 07:50:23 BoogieIcfgContainer [2018-11-06 19:50:23,053 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-06 19:50:23,054 INFO L168 Benchmark]: Toolchain (without parser) took 231063.73 ms. Allocated memory was 1.5 GB in the beginning and 3.4 GB in the end (delta: 1.9 GB). Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 291.1 MB). Peak memory consumption was 2.2 GB. Max. memory is 7.1 GB. [2018-11-06 19:50:23,055 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-06 19:50:23,056 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3461.20 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 402.5 MB). Peak memory consumption was 402.5 MB. Max. memory is 7.1 GB. [2018-11-06 19:50:23,056 INFO L168 Benchmark]: Boogie Procedure Inliner took 1193.84 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 852.5 MB). Free memory was 1.0 GB in the beginning and 2.1 GB in the end (delta: -1.1 GB). Peak memory consumption was 98.9 MB. Max. memory is 7.1 GB. [2018-11-06 19:50:23,057 INFO L168 Benchmark]: Boogie Preprocessor took 961.92 ms. Allocated memory is still 2.4 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 116.5 MB). Peak memory consumption was 116.5 MB. Max. memory is 7.1 GB. [2018-11-06 19:50:23,058 INFO L168 Benchmark]: RCFGBuilder took 16485.56 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 274.2 MB). Free memory was 2.0 GB in the beginning and 1.5 GB in the end (delta: 494.5 MB). Peak memory consumption was 768.7 MB. Max. memory is 7.1 GB. [2018-11-06 19:50:23,059 INFO L168 Benchmark]: TraceAbstraction took 208955.69 ms. Allocated memory was 2.7 GB in the beginning and 3.4 GB in the end (delta: 770.7 MB). Free memory was 1.5 GB in the beginning and 1.1 GB in the end (delta: 412.5 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. [2018-11-06 19:50:23,067 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 3461.20 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 402.5 MB). Peak memory consumption was 402.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 1193.84 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 852.5 MB). Free memory was 1.0 GB in the beginning and 2.1 GB in the end (delta: -1.1 GB). Peak memory consumption was 98.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 961.92 ms. Allocated memory is still 2.4 GB. Free memory was 2.1 GB in the beginning and 2.0 GB in the end (delta: 116.5 MB). Peak memory consumption was 116.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 16485.56 ms. Allocated memory was 2.4 GB in the beginning and 2.7 GB in the end (delta: 274.2 MB). Free memory was 2.0 GB in the beginning and 1.5 GB in the end (delta: 494.5 MB). Peak memory consumption was 768.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 208955.69 ms. Allocated memory was 2.7 GB in the beginning and 3.4 GB in the end (delta: 770.7 MB). Free memory was 1.5 GB in the beginning and 1.1 GB in the end (delta: 412.5 MB). Peak memory consumption was 1.2 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 55]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 55). Cancelled while BasicCegarLoop was constructing difference of abstraction (278164states) and FLOYD_HOARE automaton (currently 2 states, 6 states before enhancement),while ReachableStatesComputation was computing reachable states (1 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1749 locations, 1 error locations. TIMEOUT Result, 208.8s OverallTime, 8 OverallIterations, 5 TraceHistogramMax, 185.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 8076 SDtfs, 47068 SDslu, 3907 SDs, 0 SdLazy, 96517 SolverSat, 22721 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 150.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1493 GetRequests, 1449 SyntacticMatches, 10 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 3.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=278164occurred in iteration=7, 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: 9.6s AutomataMinimizationTime, 7 MinimizatonAttempts, 129106 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 6.4s InterpolantComputationTime, 5545 NumberOfCodeBlocks, 5545 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 5534 ConstructedInterpolants, 0 QuantifiedInterpolants, 9952854 SizeOfPredicates, 2 NumberOfNonLiveVariables, 1755 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 11 InterpolantComputations, 8 PerfectInterpolantSequences, 3585/3658 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown