java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label40_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-26 19:16:11,930 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-26 19:16:11,932 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-26 19:16:11,950 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-26 19:16:11,950 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-26 19:16:11,952 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-26 19:16:11,955 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-26 19:16:11,957 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-26 19:16:11,959 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-26 19:16:11,960 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-26 19:16:11,961 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-26 19:16:11,961 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-26 19:16:11,962 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-26 19:16:11,963 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-26 19:16:11,964 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-26 19:16:11,965 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-26 19:16:11,966 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-26 19:16:11,968 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-26 19:16:11,970 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-26 19:16:11,971 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-26 19:16:11,972 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-26 19:16:11,974 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-26 19:16:11,976 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-26 19:16:11,985 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-10-26 19:16:12,000 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-26 19:16:12,001 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-26 19:16:12,002 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-26 19:16:12,002 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-26 19:16:12,002 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-26 19:16:12,002 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-26 19:16:12,003 INFO L133 SettingsManager]: * Use SBE=true [2018-10-26 19:16:12,003 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-26 19:16:12,003 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-26 19:16:12,003 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-26 19:16:12,003 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-26 19:16:12,004 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-26 19:16:12,004 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-26 19:16:12,004 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-26 19:16:12,004 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-26 19:16:12,004 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-26 19:16:12,005 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-26 19:16:12,005 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-26 19:16:12,005 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-26 19:16:12,005 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 19:16:12,005 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-26 19:16:12,006 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-26 19:16:12,006 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-26 19:16:12,006 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-26 19:16:12,006 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-26 19:16:12,006 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-26 19:16:12,007 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-26 19:16:12,007 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-26 19:16:12,051 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-26 19:16:12,064 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-26 19:16:12,067 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-26 19:16:12,069 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-26 19:16:12,070 INFO L276 PluginConnector]: CDTParser initialized [2018-10-26 19:16:12,070 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label40_false-unreach-call.c [2018-10-26 19:16:12,140 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ade400deb/33450f3837ed4e498ddcf39140a0bc11/FLAG58aa58f86 [2018-10-26 19:16:13,007 INFO L298 CDTParser]: Found 1 translation units. [2018-10-26 19:16:13,008 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label40_false-unreach-call.c [2018-10-26 19:16:13,040 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ade400deb/33450f3837ed4e498ddcf39140a0bc11/FLAG58aa58f86 [2018-10-26 19:16:13,056 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ade400deb/33450f3837ed4e498ddcf39140a0bc11 [2018-10-26 19:16:13,068 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-26 19:16:13,070 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-26 19:16:13,071 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-26 19:16:13,071 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-26 19:16:13,075 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-26 19:16:13,077 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:16:13" (1/1) ... [2018-10-26 19:16:13,080 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@441f49ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:16:13, skipping insertion in model container [2018-10-26 19:16:13,080 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:16:13" (1/1) ... [2018-10-26 19:16:13,093 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-26 19:16:13,251 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-26 19:16:14,680 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 19:16:14,685 INFO L189 MainTranslator]: Completed pre-run [2018-10-26 19:16:15,498 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-26 19:16:15,539 INFO L193 MainTranslator]: Completed translation [2018-10-26 19:16:15,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:16:15 WrapperNode [2018-10-26 19:16:15,540 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-26 19:16:15,541 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-26 19:16:15,544 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-26 19:16:15,544 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-26 19:16:15,555 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:16:15" (1/1) ... [2018-10-26 19:16:15,635 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:16:15" (1/1) ... [2018-10-26 19:16:16,575 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-26 19:16:16,575 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-26 19:16:16,575 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-26 19:16:16,575 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-26 19:16:16,587 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:16:15" (1/1) ... [2018-10-26 19:16:16,587 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:16:15" (1/1) ... [2018-10-26 19:16:16,652 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:16:15" (1/1) ... [2018-10-26 19:16:16,653 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:16:15" (1/1) ... [2018-10-26 19:16:16,884 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:16:15" (1/1) ... [2018-10-26 19:16:16,921 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:16:15" (1/1) ... [2018-10-26 19:16:17,032 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:16:15" (1/1) ... [2018-10-26 19:16:17,109 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-26 19:16:17,109 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-26 19:16:17,109 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-26 19:16:17,110 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-26 19:16:17,110 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:16:15" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-26 19:16:17,185 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-26 19:16:17,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-26 19:16:17,185 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-26 19:16:30,786 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-26 19:16:30,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:16:30 BoogieIcfgContainer [2018-10-26 19:16:30,787 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-26 19:16:30,788 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-26 19:16:30,788 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-26 19:16:30,791 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-26 19:16:30,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 07:16:13" (1/3) ... [2018-10-26 19:16:30,792 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53ff8ab8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:16:30, skipping insertion in model container [2018-10-26 19:16:30,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:16:15" (2/3) ... [2018-10-26 19:16:30,793 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53ff8ab8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:16:30, skipping insertion in model container [2018-10-26 19:16:30,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:16:30" (3/3) ... [2018-10-26 19:16:30,797 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label40_false-unreach-call.c [2018-10-26 19:16:30,806 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-26 19:16:30,818 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-26 19:16:30,835 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-26 19:16:30,878 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-26 19:16:30,879 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-26 19:16:30,879 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-26 19:16:30,880 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-26 19:16:30,880 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-26 19:16:30,880 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-26 19:16:30,880 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-26 19:16:30,880 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-26 19:16:30,880 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-26 19:16:30,918 INFO L276 IsEmpty]: Start isEmpty. Operand 1099 states. [2018-10-26 19:16:30,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-10-26 19:16:30,925 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:16:30,926 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] [2018-10-26 19:16:30,929 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:16:30,934 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:16:30,935 INFO L82 PathProgramCache]: Analyzing trace with hash 1827210562, now seen corresponding path program 1 times [2018-10-26 19:16:30,936 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:16:30,937 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:16:30,994 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:16:30,994 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:16:30,994 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:16:31,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:16:31,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:16:31,422 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:16:31,423 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:16:31,427 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:16:31,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:16:31,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:16:31,446 INFO L87 Difference]: Start difference. First operand 1099 states. Second operand 4 states. [2018-10-26 19:16:48,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:16:48,127 INFO L93 Difference]: Finished difference Result 3973 states and 7416 transitions. [2018-10-26 19:16:48,127 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:16:48,129 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2018-10-26 19:16:48,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:16:48,179 INFO L225 Difference]: With dead ends: 3973 [2018-10-26 19:16:48,180 INFO L226 Difference]: Without dead ends: 2867 [2018-10-26 19:16:48,189 INFO L605 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 [2018-10-26 19:16:48,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2867 states. [2018-10-26 19:16:48,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2867 to 1938. [2018-10-26 19:16:48,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1938 states. [2018-10-26 19:16:48,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1938 states to 1938 states and 3240 transitions. [2018-10-26 19:16:48,338 INFO L78 Accepts]: Start accepts. Automaton has 1938 states and 3240 transitions. Word has length 29 [2018-10-26 19:16:48,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:16:48,338 INFO L481 AbstractCegarLoop]: Abstraction has 1938 states and 3240 transitions. [2018-10-26 19:16:48,338 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:16:48,339 INFO L276 IsEmpty]: Start isEmpty. Operand 1938 states and 3240 transitions. [2018-10-26 19:16:48,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2018-10-26 19:16:48,343 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:16:48,343 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:16:48,343 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:16:48,344 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:16:48,344 INFO L82 PathProgramCache]: Analyzing trace with hash -495686712, now seen corresponding path program 1 times [2018-10-26 19:16:48,344 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:16:48,344 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:16:48,345 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:16:48,345 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:16:48,346 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:16:48,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:16:48,754 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:16:48,754 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:16:48,754 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:16:48,756 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:16:48,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:16:48,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:16:48,757 INFO L87 Difference]: Start difference. First operand 1938 states and 3240 transitions. Second operand 4 states. [2018-10-26 19:17:05,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:17:05,795 INFO L93 Difference]: Finished difference Result 7101 states and 12101 transitions. [2018-10-26 19:17:05,796 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:17:05,796 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 101 [2018-10-26 19:17:05,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:17:05,824 INFO L225 Difference]: With dead ends: 7101 [2018-10-26 19:17:05,825 INFO L226 Difference]: Without dead ends: 5165 [2018-10-26 19:17:05,830 INFO L605 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 [2018-10-26 19:17:05,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5165 states. [2018-10-26 19:17:05,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5165 to 3540. [2018-10-26 19:17:05,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3540 states. [2018-10-26 19:17:05,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3540 states to 3540 states and 5445 transitions. [2018-10-26 19:17:05,910 INFO L78 Accepts]: Start accepts. Automaton has 3540 states and 5445 transitions. Word has length 101 [2018-10-26 19:17:05,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:17:05,911 INFO L481 AbstractCegarLoop]: Abstraction has 3540 states and 5445 transitions. [2018-10-26 19:17:05,911 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:17:05,911 INFO L276 IsEmpty]: Start isEmpty. Operand 3540 states and 5445 transitions. [2018-10-26 19:17:05,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2018-10-26 19:17:05,914 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:17:05,914 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:17:05,915 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:17:05,915 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:17:05,915 INFO L82 PathProgramCache]: Analyzing trace with hash -57072693, now seen corresponding path program 1 times [2018-10-26 19:17:05,915 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:17:05,915 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:17:05,916 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:17:05,917 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:17:05,917 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:17:05,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:17:06,138 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:17:06,138 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:17:06,139 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:17:06,139 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:17:06,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:17:06,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:17:06,140 INFO L87 Difference]: Start difference. First operand 3540 states and 5445 transitions. Second operand 4 states. [2018-10-26 19:17:24,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:17:24,836 INFO L93 Difference]: Finished difference Result 13555 states and 21081 transitions. [2018-10-26 19:17:24,837 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:17:24,837 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 115 [2018-10-26 19:17:24,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:17:24,885 INFO L225 Difference]: With dead ends: 13555 [2018-10-26 19:17:24,886 INFO L226 Difference]: Without dead ends: 10017 [2018-10-26 19:17:24,894 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:17:24,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10017 states. [2018-10-26 19:17:25,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10017 to 6718. [2018-10-26 19:17:25,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6718 states. [2018-10-26 19:17:25,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6718 states to 6718 states and 9885 transitions. [2018-10-26 19:17:25,038 INFO L78 Accepts]: Start accepts. Automaton has 6718 states and 9885 transitions. Word has length 115 [2018-10-26 19:17:25,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:17:25,039 INFO L481 AbstractCegarLoop]: Abstraction has 6718 states and 9885 transitions. [2018-10-26 19:17:25,039 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:17:25,039 INFO L276 IsEmpty]: Start isEmpty. Operand 6718 states and 9885 transitions. [2018-10-26 19:17:25,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2018-10-26 19:17:25,043 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:17:25,043 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:17:25,043 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:17:25,044 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:17:25,044 INFO L82 PathProgramCache]: Analyzing trace with hash -429054184, now seen corresponding path program 1 times [2018-10-26 19:17:25,044 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:17:25,044 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:17:25,045 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:17:25,045 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:17:25,045 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:17:25,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:17:25,391 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:17:25,391 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:17:25,391 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:17:25,393 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:17:25,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:17:25,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:17:25,394 INFO L87 Difference]: Start difference. First operand 6718 states and 9885 transitions. Second operand 4 states. [2018-10-26 19:17:40,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:17:40,776 INFO L93 Difference]: Finished difference Result 23855 states and 35012 transitions. [2018-10-26 19:17:40,776 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:17:40,777 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 133 [2018-10-26 19:17:40,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:17:40,838 INFO L225 Difference]: With dead ends: 23855 [2018-10-26 19:17:40,838 INFO L226 Difference]: Without dead ends: 17139 [2018-10-26 19:17:40,852 INFO L605 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 [2018-10-26 19:17:40,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17139 states. [2018-10-26 19:17:41,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17139 to 13037. [2018-10-26 19:17:41,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13037 states. [2018-10-26 19:17:41,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13037 states to 13037 states and 18976 transitions. [2018-10-26 19:17:41,098 INFO L78 Accepts]: Start accepts. Automaton has 13037 states and 18976 transitions. Word has length 133 [2018-10-26 19:17:41,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:17:41,099 INFO L481 AbstractCegarLoop]: Abstraction has 13037 states and 18976 transitions. [2018-10-26 19:17:41,099 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:17:41,099 INFO L276 IsEmpty]: Start isEmpty. Operand 13037 states and 18976 transitions. [2018-10-26 19:17:41,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-10-26 19:17:41,101 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:17:41,101 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:17:41,102 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:17:41,102 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:17:41,102 INFO L82 PathProgramCache]: Analyzing trace with hash -842540244, now seen corresponding path program 1 times [2018-10-26 19:17:41,102 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:17:41,102 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:17:41,103 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:17:41,104 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:17:41,104 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:17:41,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:17:41,645 WARN L179 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 9 [2018-10-26 19:17:42,163 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:17:42,163 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:17:42,163 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-26 19:17:42,164 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-26 19:17:42,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-26 19:17:42,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-10-26 19:17:42,165 INFO L87 Difference]: Start difference. First operand 13037 states and 18976 transitions. Second operand 6 states. [2018-10-26 19:18:00,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:18:00,589 INFO L93 Difference]: Finished difference Result 41152 states and 59128 transitions. [2018-10-26 19:18:00,590 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-10-26 19:18:00,590 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 141 [2018-10-26 19:18:00,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:18:00,649 INFO L225 Difference]: With dead ends: 41152 [2018-10-26 19:18:00,649 INFO L226 Difference]: Without dead ends: 28117 [2018-10-26 19:18:00,670 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-10-26 19:18:00,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28117 states. [2018-10-26 19:18:01,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28117 to 27247. [2018-10-26 19:18:01,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27247 states. [2018-10-26 19:18:01,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27247 states to 27247 states and 35783 transitions. [2018-10-26 19:18:01,058 INFO L78 Accepts]: Start accepts. Automaton has 27247 states and 35783 transitions. Word has length 141 [2018-10-26 19:18:01,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:18:01,059 INFO L481 AbstractCegarLoop]: Abstraction has 27247 states and 35783 transitions. [2018-10-26 19:18:01,059 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-26 19:18:01,059 INFO L276 IsEmpty]: Start isEmpty. Operand 27247 states and 35783 transitions. [2018-10-26 19:18:01,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2018-10-26 19:18:01,062 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:18:01,064 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:18:01,065 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:18:01,065 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:18:01,065 INFO L82 PathProgramCache]: Analyzing trace with hash 517549558, now seen corresponding path program 1 times [2018-10-26 19:18:01,065 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:18:01,066 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:18:01,066 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:18:01,067 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:18:01,067 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:18:01,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:18:01,448 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:18:01,448 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:18:01,448 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:18:01,449 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 19:18:01,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 19:18:01,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 19:18:01,449 INFO L87 Difference]: Start difference. First operand 27247 states and 35783 transitions. Second operand 5 states. [2018-10-26 19:18:16,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:18:16,908 INFO L93 Difference]: Finished difference Result 68927 states and 90707 transitions. [2018-10-26 19:18:16,909 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 19:18:16,909 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 155 [2018-10-26 19:18:16,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:18:16,988 INFO L225 Difference]: With dead ends: 68927 [2018-10-26 19:18:16,988 INFO L226 Difference]: Without dead ends: 41681 [2018-10-26 19:18:17,024 INFO L605 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 [2018-10-26 19:18:17,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41681 states. [2018-10-26 19:18:17,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41681 to 39901. [2018-10-26 19:18:17,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39901 states. [2018-10-26 19:18:17,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39901 states to 39901 states and 51942 transitions. [2018-10-26 19:18:17,511 INFO L78 Accepts]: Start accepts. Automaton has 39901 states and 51942 transitions. Word has length 155 [2018-10-26 19:18:17,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:18:17,512 INFO L481 AbstractCegarLoop]: Abstraction has 39901 states and 51942 transitions. [2018-10-26 19:18:17,512 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 19:18:17,512 INFO L276 IsEmpty]: Start isEmpty. Operand 39901 states and 51942 transitions. [2018-10-26 19:18:17,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2018-10-26 19:18:17,516 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:18:17,517 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 19:18:17,517 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:18:17,517 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:18:17,517 INFO L82 PathProgramCache]: Analyzing trace with hash 1153759498, now seen corresponding path program 1 times [2018-10-26 19:18:17,517 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:18:17,518 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:18:17,518 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:18:17,519 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:18:17,519 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:18:17,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:18:17,976 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 138 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:18:17,976 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:18:17,976 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:18:17,977 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-26 19:18:17,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-26 19:18:17,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-10-26 19:18:17,977 INFO L87 Difference]: Start difference. First operand 39901 states and 51942 transitions. Second operand 5 states. [2018-10-26 19:18:37,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:18:37,413 INFO L93 Difference]: Finished difference Result 102967 states and 135205 transitions. [2018-10-26 19:18:37,419 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-26 19:18:37,420 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 212 [2018-10-26 19:18:37,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:18:37,511 INFO L225 Difference]: With dead ends: 102967 [2018-10-26 19:18:37,511 INFO L226 Difference]: Without dead ends: 63068 [2018-10-26 19:18:37,552 INFO L605 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 [2018-10-26 19:18:37,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63068 states. [2018-10-26 19:18:38,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63068 to 62871. [2018-10-26 19:18:38,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62871 states. [2018-10-26 19:18:38,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62871 states to 62871 states and 81367 transitions. [2018-10-26 19:18:38,873 INFO L78 Accepts]: Start accepts. Automaton has 62871 states and 81367 transitions. Word has length 212 [2018-10-26 19:18:38,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:18:38,874 INFO L481 AbstractCegarLoop]: Abstraction has 62871 states and 81367 transitions. [2018-10-26 19:18:38,874 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-26 19:18:38,874 INFO L276 IsEmpty]: Start isEmpty. Operand 62871 states and 81367 transitions. [2018-10-26 19:18:38,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2018-10-26 19:18:38,878 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:18:38,879 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 19:18:38,879 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:18:38,879 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:18:38,879 INFO L82 PathProgramCache]: Analyzing trace with hash -227015565, now seen corresponding path program 1 times [2018-10-26 19:18:38,879 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:18:38,880 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:18:38,880 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:18:38,881 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:18:38,881 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:18:38,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:18:39,268 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 53 proven. 4 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2018-10-26 19:18:39,268 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-26 19:18:39,268 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-26 19:18:39,283 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:18:39,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:18:39,417 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-26 19:18:39,521 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 149 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:18:39,558 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-26 19:18:39,558 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-10-26 19:18:39,559 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:18:39,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:18:39,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:18:39,560 INFO L87 Difference]: Start difference. First operand 62871 states and 81367 transitions. Second operand 4 states. [2018-10-26 19:18:54,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:18:54,198 INFO L93 Difference]: Finished difference Result 199085 states and 259089 transitions. [2018-10-26 19:18:54,198 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:18:54,198 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 241 [2018-10-26 19:18:54,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:18:54,392 INFO L225 Difference]: With dead ends: 199085 [2018-10-26 19:18:54,392 INFO L226 Difference]: Without dead ends: 136216 [2018-10-26 19:18:54,439 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 241 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:18:54,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136216 states. [2018-10-26 19:18:55,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136216 to 109360. [2018-10-26 19:18:55,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109360 states. [2018-10-26 19:18:56,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109360 states to 109360 states and 137444 transitions. [2018-10-26 19:18:56,115 INFO L78 Accepts]: Start accepts. Automaton has 109360 states and 137444 transitions. Word has length 241 [2018-10-26 19:18:56,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:18:56,115 INFO L481 AbstractCegarLoop]: Abstraction has 109360 states and 137444 transitions. [2018-10-26 19:18:56,115 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:18:56,115 INFO L276 IsEmpty]: Start isEmpty. Operand 109360 states and 137444 transitions. [2018-10-26 19:18:56,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2018-10-26 19:18:56,124 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:18:56,124 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 19:18:56,124 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:18:56,125 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:18:56,125 INFO L82 PathProgramCache]: Analyzing trace with hash 355724236, now seen corresponding path program 1 times [2018-10-26 19:18:56,125 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:18:56,125 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:18:56,126 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:18:56,126 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:18:56,127 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:18:56,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:18:56,374 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 156 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:18:56,375 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:18:56,375 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:18:56,376 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-26 19:18:56,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-26 19:18:56,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 19:18:56,377 INFO L87 Difference]: Start difference. First operand 109360 states and 137444 transitions. Second operand 3 states. [2018-10-26 19:19:05,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:19:05,154 INFO L93 Difference]: Finished difference Result 217115 states and 273078 transitions. [2018-10-26 19:19:05,155 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-26 19:19:05,155 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 259 [2018-10-26 19:19:05,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:19:05,297 INFO L225 Difference]: With dead ends: 217115 [2018-10-26 19:19:05,297 INFO L226 Difference]: Without dead ends: 108545 [2018-10-26 19:19:05,349 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-26 19:19:05,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108545 states. [2018-10-26 19:19:06,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108545 to 107748. [2018-10-26 19:19:06,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107748 states. [2018-10-26 19:19:06,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107748 states to 107748 states and 126558 transitions. [2018-10-26 19:19:06,420 INFO L78 Accepts]: Start accepts. Automaton has 107748 states and 126558 transitions. Word has length 259 [2018-10-26 19:19:06,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:19:06,421 INFO L481 AbstractCegarLoop]: Abstraction has 107748 states and 126558 transitions. [2018-10-26 19:19:06,421 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-26 19:19:06,421 INFO L276 IsEmpty]: Start isEmpty. Operand 107748 states and 126558 transitions. [2018-10-26 19:19:06,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2018-10-26 19:19:06,426 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:19:06,427 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 19:19:06,429 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:19:06,429 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:19:06,429 INFO L82 PathProgramCache]: Analyzing trace with hash -1643534312, now seen corresponding path program 1 times [2018-10-26 19:19:06,429 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:19:06,430 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:19:06,430 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:19:06,431 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:19:06,431 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:19:06,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:19:06,694 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 149 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-26 19:19:06,694 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:19:06,695 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-26 19:19:06,695 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:19:06,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:19:06,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:19:06,695 INFO L87 Difference]: Start difference. First operand 107748 states and 126558 transitions. Second operand 4 states. [2018-10-26 19:19:19,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:19:19,636 INFO L93 Difference]: Finished difference Result 303797 states and 356119 transitions. [2018-10-26 19:19:19,636 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:19:19,636 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 269 [2018-10-26 19:19:19,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:19:19,911 INFO L225 Difference]: With dead ends: 303797 [2018-10-26 19:19:19,912 INFO L226 Difference]: Without dead ends: 196837 [2018-10-26 19:19:20,003 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:19:20,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196837 states. [2018-10-26 19:19:22,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196837 to 193625. [2018-10-26 19:19:22,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193625 states. [2018-10-26 19:19:23,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193625 states to 193625 states and 218375 transitions. [2018-10-26 19:19:23,047 INFO L78 Accepts]: Start accepts. Automaton has 193625 states and 218375 transitions. Word has length 269 [2018-10-26 19:19:23,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:19:23,047 INFO L481 AbstractCegarLoop]: Abstraction has 193625 states and 218375 transitions. [2018-10-26 19:19:23,048 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:19:23,048 INFO L276 IsEmpty]: Start isEmpty. Operand 193625 states and 218375 transitions. [2018-10-26 19:19:23,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2018-10-26 19:19:23,058 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:19:23,058 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-26 19:19:23,058 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:19:23,059 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:19:23,059 INFO L82 PathProgramCache]: Analyzing trace with hash 1285746636, now seen corresponding path program 1 times [2018-10-26 19:19:23,059 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:19:23,059 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:19:23,060 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:19:23,060 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:19:23,060 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:19:23,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:19:23,417 INFO L134 CoverageAnalysis]: Checked inductivity of 178 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2018-10-26 19:19:23,417 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:19:23,418 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:19:23,418 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:19:23,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:19:23,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:19:23,419 INFO L87 Difference]: Start difference. First operand 193625 states and 218375 transitions. Second operand 4 states. [2018-10-26 19:19:36,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-26 19:19:36,032 INFO L93 Difference]: Finished difference Result 481782 states and 543891 transitions. [2018-10-26 19:19:36,032 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:19:36,033 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 309 [2018-10-26 19:19:36,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-26 19:19:36,363 INFO L225 Difference]: With dead ends: 481782 [2018-10-26 19:19:36,363 INFO L226 Difference]: Without dead ends: 276318 [2018-10-26 19:19:36,470 INFO L605 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 [2018-10-26 19:19:36,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276318 states. [2018-10-26 19:19:39,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276318 to 255017. [2018-10-26 19:19:39,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255017 states. [2018-10-26 19:19:41,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255017 states to 255017 states and 278274 transitions. [2018-10-26 19:19:41,819 INFO L78 Accepts]: Start accepts. Automaton has 255017 states and 278274 transitions. Word has length 309 [2018-10-26 19:19:41,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-26 19:19:41,820 INFO L481 AbstractCegarLoop]: Abstraction has 255017 states and 278274 transitions. [2018-10-26 19:19:41,820 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-26 19:19:41,820 INFO L276 IsEmpty]: Start isEmpty. Operand 255017 states and 278274 transitions. [2018-10-26 19:19:41,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 388 [2018-10-26 19:19:41,827 INFO L367 BasicCegarLoop]: Found error trace [2018-10-26 19:19:41,828 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-26 19:19:41,828 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-26 19:19:41,828 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-26 19:19:41,829 INFO L82 PathProgramCache]: Analyzing trace with hash 1207637578, now seen corresponding path program 1 times [2018-10-26 19:19:41,829 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-26 19:19:41,829 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-26 19:19:41,829 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:19:41,830 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-26 19:19:41,831 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-26 19:19:41,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-26 19:19:42,300 WARN L179 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 10 DAG size of output: 7 [2018-10-26 19:19:42,416 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 392 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2018-10-26 19:19:42,417 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-26 19:19:42,417 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-26 19:19:42,418 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-26 19:19:42,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-26 19:19:42,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-26 19:19:42,418 INFO L87 Difference]: Start difference. First operand 255017 states and 278274 transitions. Second operand 4 states. Received shutdown request... [2018-10-26 19:20:01,831 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-26 19:20:01,832 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-26 19:20:01,837 WARN L205 ceAbstractionStarter]: Timeout [2018-10-26 19:20:01,837 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 07:20:01 BoogieIcfgContainer [2018-10-26 19:20:01,837 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-26 19:20:01,838 INFO L168 Benchmark]: Toolchain (without parser) took 228769.46 ms. Allocated memory was 1.5 GB in the beginning and 4.4 GB in the end (delta: 2.9 GB). Free memory was 1.4 GB in the beginning and 3.7 GB in the end (delta: -2.3 GB). Peak memory consumption was 3.2 GB. Max. memory is 7.1 GB. [2018-10-26 19:20:01,839 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-26 19:20:01,840 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2468.95 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-10-26 19:20:01,841 INFO L168 Benchmark]: Boogie Procedure Inliner took 1034.28 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 837.3 MB). Free memory was 1.1 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 73.1 MB. Max. memory is 7.1 GB. [2018-10-26 19:20:01,842 INFO L168 Benchmark]: Boogie Preprocessor took 533.72 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 64.5 MB). Peak memory consumption was 64.5 MB. Max. memory is 7.1 GB. [2018-10-26 19:20:01,842 INFO L168 Benchmark]: RCFGBuilder took 13678.05 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 229.6 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 21.1 MB). Peak memory consumption was 631.9 MB. Max. memory is 7.1 GB. [2018-10-26 19:20:01,843 INFO L168 Benchmark]: TraceAbstraction took 211049.44 ms. Allocated memory was 2.6 GB in the beginning and 4.4 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 3.7 GB in the end (delta: -1.6 GB). Peak memory consumption was 2.8 GB. Max. memory is 7.1 GB. [2018-10-26 19:20:01,848 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 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2468.95 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 1034.28 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 837.3 MB). Free memory was 1.1 GB in the beginning and 2.2 GB in the end (delta: -1.0 GB). Peak memory consumption was 73.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 533.72 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 64.5 MB). Peak memory consumption was 64.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 13678.05 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 229.6 MB). Free memory was 2.1 GB in the beginning and 2.1 GB in the end (delta: 21.1 MB). Peak memory consumption was 631.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 211049.44 ms. Allocated memory was 2.6 GB in the beginning and 4.4 GB in the end (delta: 1.9 GB). Free memory was 2.1 GB in the beginning and 3.7 GB in the end (delta: -1.6 GB). Peak memory consumption was 2.8 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 96]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 96). Cancelled while BasicCegarLoop was constructing difference of abstraction (255017states) and FLOYD_HOARE automaton (currently 4 states, 4 states before enhancement),while ReachableStatesComputation was computing reachable states (489142 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 1099 locations, 1 error locations. TIMEOUT Result, 210.9s OverallTime, 12 OverallIterations, 4 TraceHistogramMax, 191.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 10050 SDtfs, 27932 SDslu, 3531 SDs, 0 SdLazy, 64323 SolverSat, 15185 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 154.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 284 GetRequests, 254 SyntacticMatches, 3 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=255017occurred in iteration=11, 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: 13.9s AutomataMinimizationTime, 11 MinimizatonAttempts, 64968 StatesRemovedByMinimization, 11 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 4.0s InterpolantComputationTime, 2592 NumberOfCodeBlocks, 2592 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 2579 ConstructedInterpolants, 0 QuantifiedInterpolants, 1816891 SizeOfPredicates, 1 NumberOfNonLiveVariables, 335 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 13 InterpolantComputations, 12 PerfectInterpolantSequences, 1464/1468 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown