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/Problem12_label08_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-06 19:03:38,739 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-06 19:03:38,743 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-06 19:03:38,759 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-06 19:03:38,759 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-06 19:03:38,760 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-06 19:03:38,763 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-06 19:03:38,766 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-06 19:03:38,769 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-06 19:03:38,770 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-06 19:03:38,772 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-06 19:03:38,772 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-06 19:03:38,773 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-06 19:03:38,774 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-06 19:03:38,775 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-06 19:03:38,776 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-06 19:03:38,786 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-06 19:03:38,787 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-06 19:03:38,792 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-06 19:03:38,794 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-06 19:03:38,795 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-06 19:03:38,797 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-06 19:03:38,802 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-06 19:03:38,803 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-06 19:03:38,803 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-06 19:03:38,804 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-06 19:03:38,805 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-06 19:03:38,806 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-06 19:03:38,807 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-06 19:03:38,812 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-06 19:03:38,813 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-06 19:03:38,814 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-06 19:03:38,814 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-06 19:03:38,815 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-06 19:03:38,815 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-06 19:03:38,818 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-06 19:03:38,819 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 19:03:38,844 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-06 19:03:38,845 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-06 19:03:38,846 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-06 19:03:38,846 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-06 19:03:38,846 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-06 19:03:38,847 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-06 19:03:38,847 INFO L133 SettingsManager]: * Use SBE=true [2018-11-06 19:03:38,847 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-06 19:03:38,847 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-06 19:03:38,847 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-06 19:03:38,848 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-06 19:03:38,848 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-06 19:03:38,848 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-06 19:03:38,848 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-06 19:03:38,848 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-06 19:03:38,849 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-06 19:03:38,850 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-06 19:03:38,850 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-06 19:03:38,850 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-06 19:03:38,850 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-06 19:03:38,850 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-06 19:03:38,851 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-06 19:03:38,851 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-06 19:03:38,851 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-06 19:03:38,851 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-06 19:03:38,851 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-06 19:03:38,852 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-06 19:03:38,852 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-06 19:03:38,920 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-06 19:03:38,936 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-06 19:03:38,941 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-06 19:03:38,946 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-06 19:03:38,946 INFO L276 PluginConnector]: CDTParser initialized [2018-11-06 19:03:38,947 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label08_false-unreach-call.c [2018-11-06 19:03:39,030 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa5c421ac/1cbfa528ec784cd9af95f8a05352eeb6/FLAG712fd9048 [2018-11-06 19:03:39,783 INFO L298 CDTParser]: Found 1 translation units. [2018-11-06 19:03:39,784 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label08_false-unreach-call.c [2018-11-06 19:03:39,816 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa5c421ac/1cbfa528ec784cd9af95f8a05352eeb6/FLAG712fd9048 [2018-11-06 19:03:39,836 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa5c421ac/1cbfa528ec784cd9af95f8a05352eeb6 [2018-11-06 19:03:39,848 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-06 19:03:39,851 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-06 19:03:39,853 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-06 19:03:39,853 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-06 19:03:39,859 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-06 19:03:39,860 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:03:39" (1/1) ... [2018-11-06 19:03:39,863 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@193d11b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:39, skipping insertion in model container [2018-11-06 19:03:39,863 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:03:39" (1/1) ... [2018-11-06 19:03:39,875 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-06 19:03:40,048 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-06 19:03:41,291 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 19:03:41,297 INFO L189 MainTranslator]: Completed pre-run [2018-11-06 19:03:41,897 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 19:03:41,934 INFO L193 MainTranslator]: Completed translation [2018-11-06 19:03:41,934 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:41 WrapperNode [2018-11-06 19:03:41,934 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-06 19:03:41,935 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-06 19:03:41,936 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-06 19:03:41,937 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-06 19:03:41,947 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:41" (1/1) ... [2018-11-06 19:03:42,278 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:41" (1/1) ... [2018-11-06 19:03:42,582 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-06 19:03:42,583 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-06 19:03:42,583 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-06 19:03:42,583 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-06 19:03:42,595 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:41" (1/1) ... [2018-11-06 19:03:42,595 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:41" (1/1) ... [2018-11-06 19:03:42,632 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:41" (1/1) ... [2018-11-06 19:03:42,632 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:41" (1/1) ... [2018-11-06 19:03:42,754 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:41" (1/1) ... [2018-11-06 19:03:42,791 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:41" (1/1) ... [2018-11-06 19:03:42,842 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:41" (1/1) ... [2018-11-06 19:03:42,919 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-06 19:03:42,920 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-06 19:03:42,920 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-06 19:03:42,920 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-06 19:03:42,921 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:41" (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 19:03:42,987 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-06 19:03:42,987 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-06 19:03:42,988 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-06 19:03:51,903 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-06 19:03:51,904 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:03:51 BoogieIcfgContainer [2018-11-06 19:03:51,904 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-06 19:03:51,905 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-06 19:03:51,905 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-06 19:03:51,908 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-06 19:03:51,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 07:03:39" (1/3) ... [2018-11-06 19:03:51,909 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43c8a7b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:03:51, skipping insertion in model container [2018-11-06 19:03:51,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:03:41" (2/3) ... [2018-11-06 19:03:51,910 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43c8a7b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:03:51, skipping insertion in model container [2018-11-06 19:03:51,910 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:03:51" (3/3) ... [2018-11-06 19:03:51,912 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label08_false-unreach-call.c [2018-11-06 19:03:51,922 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-06 19:03:51,932 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-06 19:03:51,950 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-06 19:03:51,993 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-06 19:03:51,994 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-06 19:03:51,994 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-06 19:03:51,994 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-06 19:03:51,994 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-06 19:03:51,994 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-06 19:03:51,994 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-06 19:03:51,995 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-06 19:03:51,995 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-06 19:03:52,029 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states. [2018-11-06 19:03:52,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-06 19:03:52,039 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:03:52,040 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:03:52,042 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:03:52,049 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:03:52,049 INFO L82 PathProgramCache]: Analyzing trace with hash 808956810, now seen corresponding path program 1 times [2018-11-06 19:03:52,052 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:03:52,052 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:03:52,105 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:03:52,106 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:03:52,106 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:03:52,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:03:52,436 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 19:03:52,441 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:03:52,442 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 19:03:52,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:03:52,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:03:52,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:03:52,465 INFO L87 Difference]: Start difference. First operand 819 states. Second operand 4 states. [2018-11-06 19:04:04,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:04:04,345 INFO L93 Difference]: Finished difference Result 3146 states and 6134 transitions. [2018-11-06 19:04:04,345 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:04:04,347 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2018-11-06 19:04:04,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:04:04,396 INFO L225 Difference]: With dead ends: 3146 [2018-11-06 19:04:04,396 INFO L226 Difference]: Without dead ends: 2320 [2018-11-06 19:04:04,405 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 19:04:04,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2320 states. [2018-11-06 19:04:04,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2320 to 2320. [2018-11-06 19:04:04,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2320 states. [2018-11-06 19:04:04,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2320 states to 2320 states and 4222 transitions. [2018-11-06 19:04:04,571 INFO L78 Accepts]: Start accepts. Automaton has 2320 states and 4222 transitions. Word has length 30 [2018-11-06 19:04:04,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:04:04,572 INFO L480 AbstractCegarLoop]: Abstraction has 2320 states and 4222 transitions. [2018-11-06 19:04:04,572 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:04:04,572 INFO L276 IsEmpty]: Start isEmpty. Operand 2320 states and 4222 transitions. [2018-11-06 19:04:04,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-11-06 19:04:04,577 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:04:04,578 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:04:04,578 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:04:04,578 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:04:04,581 INFO L82 PathProgramCache]: Analyzing trace with hash -1843346744, now seen corresponding path program 1 times [2018-11-06 19:04:04,581 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:04:04,581 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:04:04,582 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:04:04,583 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:04:04,583 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:04:04,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:04:05,171 WARN L179 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 20 DAG size of output: 15 [2018-11-06 19:04:05,414 WARN L179 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 21 [2018-11-06 19:04:05,647 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 19:04:05,647 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:04:05,647 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-06 19:04:05,649 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-06 19:04:05,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-06 19:04:05,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-11-06 19:04:05,650 INFO L87 Difference]: Start difference. First operand 2320 states and 4222 transitions. Second operand 7 states. [2018-11-06 19:04:22,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:04:22,941 INFO L93 Difference]: Finished difference Result 9904 states and 17611 transitions. [2018-11-06 19:04:22,945 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-06 19:04:22,945 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 96 [2018-11-06 19:04:22,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:04:22,984 INFO L225 Difference]: With dead ends: 9904 [2018-11-06 19:04:22,984 INFO L226 Difference]: Without dead ends: 7586 [2018-11-06 19:04:22,990 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 4 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2018-11-06 19:04:22,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7586 states. [2018-11-06 19:04:23,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7586 to 6080. [2018-11-06 19:04:23,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6080 states. [2018-11-06 19:04:23,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6080 states to 6080 states and 9384 transitions. [2018-11-06 19:04:23,108 INFO L78 Accepts]: Start accepts. Automaton has 6080 states and 9384 transitions. Word has length 96 [2018-11-06 19:04:23,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:04:23,108 INFO L480 AbstractCegarLoop]: Abstraction has 6080 states and 9384 transitions. [2018-11-06 19:04:23,109 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-06 19:04:23,109 INFO L276 IsEmpty]: Start isEmpty. Operand 6080 states and 9384 transitions. [2018-11-06 19:04:23,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-11-06 19:04:23,112 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:04:23,112 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:04:23,113 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:04:23,113 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:04:23,113 INFO L82 PathProgramCache]: Analyzing trace with hash -995895591, now seen corresponding path program 1 times [2018-11-06 19:04:23,113 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:04:23,114 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:04:23,114 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:04:23,115 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:04:23,115 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:04:23,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:04:23,274 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2018-11-06 19:04:23,274 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 19:04:23,275 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 19:04:23,291 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:04:23,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:04:23,349 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 19:04:23,419 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 19:04:23,447 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 19:04:23,447 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2018-11-06 19:04:23,448 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-06 19:04:23,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-06 19:04:23,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-06 19:04:23,449 INFO L87 Difference]: Start difference. First operand 6080 states and 9384 transitions. Second operand 5 states. [2018-11-06 19:04:35,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:04:35,917 INFO L93 Difference]: Finished difference Result 27214 states and 43707 transitions. [2018-11-06 19:04:35,920 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-06 19:04:35,920 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 102 [2018-11-06 19:04:35,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:04:35,996 INFO L225 Difference]: With dead ends: 27214 [2018-11-06 19:04:35,996 INFO L226 Difference]: Without dead ends: 21136 [2018-11-06 19:04:36,007 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-06 19:04:36,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21136 states. [2018-11-06 19:04:36,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21136 to 15104. [2018-11-06 19:04:36,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15104 states. [2018-11-06 19:04:36,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15104 states to 15104 states and 22198 transitions. [2018-11-06 19:04:36,320 INFO L78 Accepts]: Start accepts. Automaton has 15104 states and 22198 transitions. Word has length 102 [2018-11-06 19:04:36,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:04:36,321 INFO L480 AbstractCegarLoop]: Abstraction has 15104 states and 22198 transitions. [2018-11-06 19:04:36,321 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-06 19:04:36,322 INFO L276 IsEmpty]: Start isEmpty. Operand 15104 states and 22198 transitions. [2018-11-06 19:04:36,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-11-06 19:04:36,330 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:04:36,330 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:04:36,331 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:04:36,331 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:04:36,331 INFO L82 PathProgramCache]: Analyzing trace with hash 1710188800, now seen corresponding path program 1 times [2018-11-06 19:04:36,331 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:04:36,331 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:04:36,332 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:04:36,332 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:04:36,333 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:04:36,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:04:36,682 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-11-06 19:04:36,893 WARN L179 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 20 [2018-11-06 19:04:37,016 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 23 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 19:04:37,017 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 19:04:37,017 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 19:04:37,029 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:04:37,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:04:37,095 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 19:04:37,256 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2018-11-06 19:04:37,285 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 19:04:37,285 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2018-11-06 19:04:37,286 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-06 19:04:37,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-06 19:04:37,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-06 19:04:37,287 INFO L87 Difference]: Start difference. First operand 15104 states and 22198 transitions. Second operand 7 states. [2018-11-06 19:04:50,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:04:50,886 INFO L93 Difference]: Finished difference Result 59535 states and 86819 transitions. [2018-11-06 19:04:50,886 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-06 19:04:50,887 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 176 [2018-11-06 19:04:50,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:04:50,962 INFO L225 Difference]: With dead ends: 59535 [2018-11-06 19:04:50,963 INFO L226 Difference]: Without dead ends: 44433 [2018-11-06 19:04:50,979 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 176 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2018-11-06 19:04:51,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44433 states. [2018-11-06 19:04:51,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44433 to 42928. [2018-11-06 19:04:51,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42928 states. [2018-11-06 19:04:51,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42928 states to 42928 states and 56765 transitions. [2018-11-06 19:04:51,611 INFO L78 Accepts]: Start accepts. Automaton has 42928 states and 56765 transitions. Word has length 176 [2018-11-06 19:04:51,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:04:51,612 INFO L480 AbstractCegarLoop]: Abstraction has 42928 states and 56765 transitions. [2018-11-06 19:04:51,612 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-06 19:04:51,612 INFO L276 IsEmpty]: Start isEmpty. Operand 42928 states and 56765 transitions. [2018-11-06 19:04:51,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2018-11-06 19:04:51,626 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:04:51,627 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-06 19:04:51,627 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:04:51,627 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:04:51,627 INFO L82 PathProgramCache]: Analyzing trace with hash -1630931784, now seen corresponding path program 1 times [2018-11-06 19:04:51,627 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:04:51,628 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:04:51,629 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:04:51,629 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:04:51,629 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:04:51,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:04:52,042 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 55 proven. 7 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2018-11-06 19:04:52,043 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 19:04:52,043 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 19:04:52,061 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:04:52,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:04:52,146 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 19:04:52,321 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-11-06 19:04:52,350 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 19:04:52,351 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 4 [2018-11-06 19:04:52,352 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-06 19:04:52,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-06 19:04:52,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-06 19:04:52,352 INFO L87 Difference]: Start difference. First operand 42928 states and 56765 transitions. Second operand 5 states. [2018-11-06 19:05:03,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:05:03,716 INFO L93 Difference]: Finished difference Result 123454 states and 163040 transitions. [2018-11-06 19:05:03,717 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-06 19:05:03,717 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 270 [2018-11-06 19:05:03,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:05:03,820 INFO L225 Difference]: With dead ends: 123454 [2018-11-06 19:05:03,820 INFO L226 Difference]: Without dead ends: 80528 [2018-11-06 19:05:03,866 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 269 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 19:05:03,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80528 states. [2018-11-06 19:05:04,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80528 to 79776. [2018-11-06 19:05:04,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79776 states. [2018-11-06 19:05:04,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79776 states to 79776 states and 95811 transitions. [2018-11-06 19:05:04,847 INFO L78 Accepts]: Start accepts. Automaton has 79776 states and 95811 transitions. Word has length 270 [2018-11-06 19:05:04,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:05:04,847 INFO L480 AbstractCegarLoop]: Abstraction has 79776 states and 95811 transitions. [2018-11-06 19:05:04,848 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-06 19:05:04,848 INFO L276 IsEmpty]: Start isEmpty. Operand 79776 states and 95811 transitions. [2018-11-06 19:05:04,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2018-11-06 19:05:04,880 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:05:04,881 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:05:04,881 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:05:04,881 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:05:04,881 INFO L82 PathProgramCache]: Analyzing trace with hash -1107446318, now seen corresponding path program 1 times [2018-11-06 19:05:04,882 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:05:04,882 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:05:04,883 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:05:04,883 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:05:04,883 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:05:04,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:05:05,432 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 227 proven. 5 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2018-11-06 19:05:05,433 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 19:05:05,433 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 19:05:05,444 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:05:05,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:05:05,536 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 19:05:05,633 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 321 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2018-11-06 19:05:05,655 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 19:05:05,655 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2018-11-06 19:05:05,657 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-06 19:05:05,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-06 19:05:05,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2018-11-06 19:05:05,658 INFO L87 Difference]: Start difference. First operand 79776 states and 95811 transitions. Second operand 7 states. [2018-11-06 19:05:22,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:05:22,995 INFO L93 Difference]: Finished difference Result 241540 states and 284793 transitions. [2018-11-06 19:05:22,995 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-06 19:05:22,995 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 376 [2018-11-06 19:05:22,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:05:23,197 INFO L225 Difference]: With dead ends: 241540 [2018-11-06 19:05:23,197 INFO L226 Difference]: Without dead ends: 159507 [2018-11-06 19:05:23,263 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 377 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=39, Unknown=0, NotChecked=0, Total=72 [2018-11-06 19:05:23,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159507 states. [2018-11-06 19:05:24,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159507 to 127151. [2018-11-06 19:05:24,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127151 states. [2018-11-06 19:05:24,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127151 states to 127151 states and 140626 transitions. [2018-11-06 19:05:24,543 INFO L78 Accepts]: Start accepts. Automaton has 127151 states and 140626 transitions. Word has length 376 [2018-11-06 19:05:24,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:05:24,543 INFO L480 AbstractCegarLoop]: Abstraction has 127151 states and 140626 transitions. [2018-11-06 19:05:24,543 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-06 19:05:24,543 INFO L276 IsEmpty]: Start isEmpty. Operand 127151 states and 140626 transitions. [2018-11-06 19:05:24,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2018-11-06 19:05:24,564 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:05:24,564 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:05:24,564 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:05:24,565 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:05:24,565 INFO L82 PathProgramCache]: Analyzing trace with hash 640689002, now seen corresponding path program 1 times [2018-11-06 19:05:24,565 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:05:24,565 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:05:24,566 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:05:24,566 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:05:24,566 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:05:24,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:05:25,133 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 3 [2018-11-06 19:05:25,237 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 250 proven. 28 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2018-11-06 19:05:25,237 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 19:05:25,238 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 19:05:25,251 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:05:25,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:05:25,362 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 19:05:25,676 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 250 proven. 28 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2018-11-06 19:05:25,705 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 19:05:25,705 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2018-11-06 19:05:25,706 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-06 19:05:25,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-06 19:05:25,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-06 19:05:25,707 INFO L87 Difference]: Start difference. First operand 127151 states and 140626 transitions. Second operand 6 states. [2018-11-06 19:05:43,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:05:43,929 INFO L93 Difference]: Finished difference Result 290411 states and 319745 transitions. [2018-11-06 19:05:43,930 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-06 19:05:43,930 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 392 [2018-11-06 19:05:43,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:05:44,112 INFO L225 Difference]: With dead ends: 290411 [2018-11-06 19:05:44,112 INFO L226 Difference]: Without dead ends: 163262 [2018-11-06 19:05:44,162 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 393 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2018-11-06 19:05:44,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163262 states. [2018-11-06 19:05:45,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163262 to 130159. [2018-11-06 19:05:45,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130159 states. [2018-11-06 19:05:45,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130159 states to 130159 states and 142542 transitions. [2018-11-06 19:05:45,361 INFO L78 Accepts]: Start accepts. Automaton has 130159 states and 142542 transitions. Word has length 392 [2018-11-06 19:05:45,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:05:45,361 INFO L480 AbstractCegarLoop]: Abstraction has 130159 states and 142542 transitions. [2018-11-06 19:05:45,362 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-06 19:05:45,362 INFO L276 IsEmpty]: Start isEmpty. Operand 130159 states and 142542 transitions. [2018-11-06 19:05:45,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 457 [2018-11-06 19:05:45,391 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:05:45,392 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, 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, 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, 1, 1, 1, 1, 1, 1, 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 19:05:45,392 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:05:45,392 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:05:45,393 INFO L82 PathProgramCache]: Analyzing trace with hash -321722547, now seen corresponding path program 1 times [2018-11-06 19:05:45,393 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:05:45,393 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:05:45,394 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:05:45,394 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:05:45,394 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:05:45,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:05:45,756 INFO L134 CoverageAnalysis]: Checked inductivity of 614 backedges. 501 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2018-11-06 19:05:45,756 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:05:45,756 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 19:05:45,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-06 19:05:45,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-06 19:05:45,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 19:05:45,757 INFO L87 Difference]: Start difference. First operand 130159 states and 142542 transitions. Second operand 3 states. [2018-11-06 19:05:51,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:05:51,159 INFO L93 Difference]: Finished difference Result 277612 states and 304664 transitions. [2018-11-06 19:05:51,159 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-06 19:05:51,160 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 456 [2018-11-06 19:05:51,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:05:51,287 INFO L225 Difference]: With dead ends: 277612 [2018-11-06 19:05:51,287 INFO L226 Difference]: Without dead ends: 147455 [2018-11-06 19:05:51,332 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 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 19:05:51,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147455 states. [2018-11-06 19:05:52,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147455 to 147455. [2018-11-06 19:05:52,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147455 states. [2018-11-06 19:05:52,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147455 states to 147455 states and 159421 transitions. [2018-11-06 19:05:52,517 INFO L78 Accepts]: Start accepts. Automaton has 147455 states and 159421 transitions. Word has length 456 [2018-11-06 19:05:52,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:05:52,517 INFO L480 AbstractCegarLoop]: Abstraction has 147455 states and 159421 transitions. [2018-11-06 19:05:52,517 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-06 19:05:52,517 INFO L276 IsEmpty]: Start isEmpty. Operand 147455 states and 159421 transitions. [2018-11-06 19:05:52,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2018-11-06 19:05:52,531 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:05:52,531 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:05:52,531 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:05:52,532 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:05:52,532 INFO L82 PathProgramCache]: Analyzing trace with hash 1900862473, now seen corresponding path program 1 times [2018-11-06 19:05:52,532 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:05:52,532 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:05:52,533 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:05:52,533 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:05:52,533 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:05:52,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:05:53,270 INFO L134 CoverageAnalysis]: Checked inductivity of 451 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 368 trivial. 0 not checked. [2018-11-06 19:05:53,271 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:05:53,271 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 19:05:53,272 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-06 19:05:53,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-06 19:05:53,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-06 19:05:53,272 INFO L87 Difference]: Start difference. First operand 147455 states and 159421 transitions. Second operand 5 states. [2018-11-06 19:06:04,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:06:04,731 INFO L93 Difference]: Finished difference Result 422045 states and 456666 transitions. [2018-11-06 19:06:04,731 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-06 19:06:04,732 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 467 [2018-11-06 19:06:04,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:06:05,041 INFO L225 Difference]: With dead ends: 422045 [2018-11-06 19:06:05,041 INFO L226 Difference]: Without dead ends: 274592 [2018-11-06 19:06:05,135 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 19:06:05,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274592 states. [2018-11-06 19:06:08,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274592 to 223454. [2018-11-06 19:06:08,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223454 states. [2018-11-06 19:06:08,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223454 states to 223454 states and 238973 transitions. [2018-11-06 19:06:08,380 INFO L78 Accepts]: Start accepts. Automaton has 223454 states and 238973 transitions. Word has length 467 [2018-11-06 19:06:08,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:06:08,381 INFO L480 AbstractCegarLoop]: Abstraction has 223454 states and 238973 transitions. [2018-11-06 19:06:08,381 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-06 19:06:08,381 INFO L276 IsEmpty]: Start isEmpty. Operand 223454 states and 238973 transitions. [2018-11-06 19:06:08,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 489 [2018-11-06 19:06:08,394 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:06:08,394 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 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 19:06:08,394 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:06:08,395 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:06:08,395 INFO L82 PathProgramCache]: Analyzing trace with hash 1940674813, now seen corresponding path program 1 times [2018-11-06 19:06:08,395 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:06:08,395 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:06:08,396 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:06:08,396 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:06:08,396 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:06:08,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:06:08,852 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-11-06 19:06:09,038 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 3 [2018-11-06 19:06:09,178 INFO L134 CoverageAnalysis]: Checked inductivity of 678 backedges. 491 proven. 70 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2018-11-06 19:06:09,179 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 19:06:09,179 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 19:06:09,187 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:06:09,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:06:09,317 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 19:06:11,188 INFO L134 CoverageAnalysis]: Checked inductivity of 678 backedges. 491 proven. 70 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2018-11-06 19:06:11,210 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 19:06:11,210 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 6 [2018-11-06 19:06:11,211 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-06 19:06:11,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-06 19:06:11,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-06 19:06:11,211 INFO L87 Difference]: Start difference. First operand 223454 states and 238973 transitions. Second operand 6 states. [2018-11-06 19:06:33,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:06:33,679 INFO L93 Difference]: Finished difference Result 489783 states and 525278 transitions. [2018-11-06 19:06:33,680 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-06 19:06:33,680 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 488 [2018-11-06 19:06:33,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:06:34,003 INFO L225 Difference]: With dead ends: 489783 [2018-11-06 19:06:34,003 INFO L226 Difference]: Without dead ends: 266331 [2018-11-06 19:06:34,105 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 496 GetRequests, 489 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2018-11-06 19:06:34,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266331 states. [2018-11-06 19:06:41,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266331 to 232478. [2018-11-06 19:06:41,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232478 states. [2018-11-06 19:06:42,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232478 states to 232478 states and 245233 transitions. [2018-11-06 19:06:42,095 INFO L78 Accepts]: Start accepts. Automaton has 232478 states and 245233 transitions. Word has length 488 [2018-11-06 19:06:42,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:06:42,096 INFO L480 AbstractCegarLoop]: Abstraction has 232478 states and 245233 transitions. [2018-11-06 19:06:42,096 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-06 19:06:42,096 INFO L276 IsEmpty]: Start isEmpty. Operand 232478 states and 245233 transitions. [2018-11-06 19:06:42,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2018-11-06 19:06:42,106 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:06:42,107 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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 19:06:42,107 INFO L423 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:06:42,107 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:06:42,108 INFO L82 PathProgramCache]: Analyzing trace with hash -198234994, now seen corresponding path program 1 times [2018-11-06 19:06:42,108 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:06:42,108 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:06:42,108 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:06:42,109 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:06:42,109 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:06:42,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:06:42,670 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 428 proven. 0 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2018-11-06 19:06:42,670 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:06:42,670 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 19:06:42,671 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:06:42,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:06:42,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:06:42,672 INFO L87 Difference]: Start difference. First operand 232478 states and 245233 transitions. Second operand 4 states. [2018-11-06 19:06:49,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:06:49,955 INFO L93 Difference]: Finished difference Result 454409 states and 479748 transitions. [2018-11-06 19:06:49,955 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:06:49,955 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 494 [2018-11-06 19:06:49,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:06:50,168 INFO L225 Difference]: With dead ends: 454409 [2018-11-06 19:06:50,169 INFO L226 Difference]: Without dead ends: 187285 [2018-11-06 19:06:50,270 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:06:50,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187285 states. [2018-11-06 19:06:52,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187285 to 181269. [2018-11-06 19:06:52,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181269 states. [2018-11-06 19:06:52,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181269 states to 181269 states and 190102 transitions. [2018-11-06 19:06:52,472 INFO L78 Accepts]: Start accepts. Automaton has 181269 states and 190102 transitions. Word has length 494 [2018-11-06 19:06:52,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:06:52,473 INFO L480 AbstractCegarLoop]: Abstraction has 181269 states and 190102 transitions. [2018-11-06 19:06:52,473 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:06:52,473 INFO L276 IsEmpty]: Start isEmpty. Operand 181269 states and 190102 transitions. [2018-11-06 19:06:52,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 511 [2018-11-06 19:06:52,481 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:06:52,482 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, 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, 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, 1, 1, 1, 1, 1, 1, 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 19:06:52,482 INFO L423 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:06:52,482 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:06:52,482 INFO L82 PathProgramCache]: Analyzing trace with hash -1920332186, now seen corresponding path program 1 times [2018-11-06 19:06:52,482 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:06:52,482 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:06:52,483 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:06:52,483 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:06:52,483 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:06:52,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:06:53,066 WARN L179 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 8 [2018-11-06 19:06:53,158 INFO L134 CoverageAnalysis]: Checked inductivity of 678 backedges. 378 proven. 0 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2018-11-06 19:06:53,159 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:06:53,159 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 19:06:53,159 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:06:53,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:06:53,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:06:53,160 INFO L87 Difference]: Start difference. First operand 181269 states and 190102 transitions. Second operand 4 states. [2018-11-06 19:06:59,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:06:59,189 INFO L93 Difference]: Finished difference Result 360272 states and 377919 transitions. [2018-11-06 19:06:59,190 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-06 19:06:59,190 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 510 [2018-11-06 19:06:59,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:06:59,408 INFO L225 Difference]: With dead ends: 360272 [2018-11-06 19:06:59,409 INFO L226 Difference]: Without dead ends: 179005 [2018-11-06 19:06:59,505 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:06:59,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179005 states. [2018-11-06 19:07:01,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179005 to 172989. [2018-11-06 19:07:01,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172989 states. [2018-11-06 19:07:01,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172989 states to 172989 states and 180428 transitions. [2018-11-06 19:07:01,718 INFO L78 Accepts]: Start accepts. Automaton has 172989 states and 180428 transitions. Word has length 510 [2018-11-06 19:07:01,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:07:01,719 INFO L480 AbstractCegarLoop]: Abstraction has 172989 states and 180428 transitions. [2018-11-06 19:07:01,719 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:07:01,719 INFO L276 IsEmpty]: Start isEmpty. Operand 172989 states and 180428 transitions. [2018-11-06 19:07:01,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 518 [2018-11-06 19:07:01,726 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:07:01,726 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:07:01,726 INFO L423 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:07:01,726 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:07:01,727 INFO L82 PathProgramCache]: Analyzing trace with hash 1340619621, now seen corresponding path program 1 times [2018-11-06 19:07:01,727 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:07:01,727 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:07:01,728 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:07:01,728 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:07:01,728 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:07:01,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:07:02,144 WARN L179 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-11-06 19:07:02,319 INFO L134 CoverageAnalysis]: Checked inductivity of 700 backedges. 485 proven. 98 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2018-11-06 19:07:02,319 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 19:07:02,319 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 19:07:02,328 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:07:02,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:07:02,470 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 19:07:03,694 INFO L134 CoverageAnalysis]: Checked inductivity of 700 backedges. 485 proven. 98 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2018-11-06 19:07:03,731 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 19:07:03,731 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2018-11-06 19:07:03,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-06 19:07:03,733 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-06 19:07:03,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-11-06 19:07:03,733 INFO L87 Difference]: Start difference. First operand 172989 states and 180428 transitions. Second operand 7 states. [2018-11-06 19:07:22,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:07:22,914 INFO L93 Difference]: Finished difference Result 422687 states and 441137 transitions. [2018-11-06 19:07:22,914 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-06 19:07:22,914 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 517 [2018-11-06 19:07:22,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. Received shutdown request... [2018-11-06 19:07:23,632 INFO L225 Difference]: With dead ends: 422687 [2018-11-06 19:07:23,632 INFO L226 Difference]: Without dead ends: 248948 [2018-11-06 19:07:23,706 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 528 GetRequests, 519 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2018-11-06 19:07:23,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248948 states. [2018-11-06 19:07:23,851 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-06 19:07:23,855 WARN L205 ceAbstractionStarter]: Timeout [2018-11-06 19:07:23,855 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 07:07:23 BoogieIcfgContainer [2018-11-06 19:07:23,855 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-06 19:07:23,856 INFO L168 Benchmark]: Toolchain (without parser) took 224007.59 ms. Allocated memory was 1.5 GB in the beginning and 4.5 GB in the end (delta: 3.0 GB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -740.9 MB). Peak memory consumption was 3.6 GB. Max. memory is 7.1 GB. [2018-11-06 19:07:23,857 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-06 19:07:23,858 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2081.95 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. [2018-11-06 19:07:23,858 INFO L168 Benchmark]: Boogie Procedure Inliner took 646.97 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 810.5 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -994.0 MB). Peak memory consumption was 54.5 MB. Max. memory is 7.1 GB. [2018-11-06 19:07:23,859 INFO L168 Benchmark]: Boogie Preprocessor took 336.82 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 43.3 MB). Peak memory consumption was 43.3 MB. Max. memory is 7.1 GB. [2018-11-06 19:07:23,860 INFO L168 Benchmark]: RCFGBuilder took 8984.07 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 218.6 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -188.8 MB). Peak memory consumption was 620.6 MB. Max. memory is 7.1 GB. [2018-11-06 19:07:23,861 INFO L168 Benchmark]: TraceAbstraction took 211950.60 ms. Allocated memory was 2.6 GB in the beginning and 4.5 GB in the end (delta: 1.9 GB). Free memory was 2.4 GB in the beginning and 2.2 GB in the end (delta: 197.8 MB). Peak memory consumption was 3.5 GB. Max. memory is 7.1 GB. [2018-11-06 19:07:23,867 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2081.95 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 646.97 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 810.5 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -994.0 MB). Peak memory consumption was 54.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 336.82 ms. Allocated memory is still 2.4 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 43.3 MB). Peak memory consumption was 43.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8984.07 ms. Allocated memory was 2.4 GB in the beginning and 2.6 GB in the end (delta: 218.6 MB). Free memory was 2.2 GB in the beginning and 2.4 GB in the end (delta: -188.8 MB). Peak memory consumption was 620.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 211950.60 ms. Allocated memory was 2.6 GB in the beginning and 4.5 GB in the end (delta: 1.9 GB). Free memory was 2.4 GB in the beginning and 2.2 GB in the end (delta: 197.8 MB). Peak memory consumption was 3.5 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 99]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 99). Cancelled while executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 819 locations, 1 error locations. TIMEOUT Result, 211.8s OverallTime, 13 OverallIterations, 5 TraceHistogramMax, 177.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 7139 SDtfs, 43296 SDslu, 1805 SDs, 0 SdLazy, 102519 SolverSat, 19125 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 135.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2407 GetRequests, 2334 SyntacticMatches, 15 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 4.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=232478occurred 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: 21.6s AutomataMinimizationTime, 13 MinimizatonAttempts, 172277 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 9.6s InterpolantComputationTime, 6695 NumberOfCodeBlocks, 6695 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 6675 ConstructedInterpolants, 0 QuantifiedInterpolants, 5880382 SizeOfPredicates, 5 NumberOfNonLiveVariables, 3068 ConjunctsInSsa, 21 ConjunctsInUnsatCore, 20 InterpolantComputations, 10 PerfectInterpolantSequences, 6690/7102 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown