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/Problem12_label09_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 16:10:05,882 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 16:10:05,884 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 16:10:05,896 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 16:10:05,897 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 16:10:05,898 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 16:10:05,901 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 16:10:05,903 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 16:10:05,905 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 16:10:05,906 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 16:10:05,906 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 16:10:05,907 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 16:10:05,908 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 16:10:05,909 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 16:10:05,910 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 16:10:05,911 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 16:10:05,912 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 16:10:05,913 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 16:10:05,915 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 16:10:05,917 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 16:10:05,918 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 16:10:05,919 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 16:10:05,922 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 16:10:05,928 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 16:10:05,928 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 16:10:05,929 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 16:10:05,930 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 16:10:05,931 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 [2018-10-24 16:10:05,956 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 16:10:05,956 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 16:10:05,957 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 16:10:05,957 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-10-24 16:10:05,958 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-24 16:10:05,959 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-24 16:10:05,959 INFO L133 SettingsManager]: * Use SBE=true [2018-10-24 16:10:05,959 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 16:10:05,959 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 16:10:05,959 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 16:10:05,960 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 16:10:05,960 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 16:10:05,960 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 16:10:05,960 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 16:10:05,960 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 16:10:05,960 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 16:10:05,962 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 16:10:05,962 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 16:10:05,962 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 16:10:05,962 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 16:10:05,962 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 16:10:05,963 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 16:10:05,963 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 16:10:05,963 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-24 16:10:05,963 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 16:10:05,964 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 16:10:05,964 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 16:10:05,964 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 16:10:06,034 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 16:10:06,053 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 16:10:06,058 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 16:10:06,059 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 16:10:06,060 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 16:10:06,061 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label09_true-unreach-call.c [2018-10-24 16:10:06,124 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/dc2194313/230c9fd45422470ca914f6f03610344a/FLAG4ab9118ad [2018-10-24 16:10:06,863 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 16:10:06,864 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label09_true-unreach-call.c [2018-10-24 16:10:06,898 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/dc2194313/230c9fd45422470ca914f6f03610344a/FLAG4ab9118ad [2018-10-24 16:10:06,920 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/dc2194313/230c9fd45422470ca914f6f03610344a [2018-10-24 16:10:06,935 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 16:10:06,939 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 16:10:06,941 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 16:10:06,942 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 16:10:06,946 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 16:10:06,947 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:10:06" (1/1) ... [2018-10-24 16:10:06,951 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b326c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:10:06, skipping insertion in model container [2018-10-24 16:10:06,951 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 04:10:06" (1/1) ... [2018-10-24 16:10:06,962 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 16:10:07,137 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 16:10:08,395 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:10:08,400 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 16:10:09,113 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 16:10:09,144 INFO L193 MainTranslator]: Completed translation [2018-10-24 16:10:09,145 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:10:09 WrapperNode [2018-10-24 16:10:09,145 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 16:10:09,146 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 16:10:09,146 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 16:10:09,147 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 16:10:09,156 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:10:09" (1/1) ... [2018-10-24 16:10:09,226 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:10:09" (1/1) ... [2018-10-24 16:10:09,738 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 16:10:09,739 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 16:10:09,739 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 16:10:09,739 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 16:10:09,751 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:10:09" (1/1) ... [2018-10-24 16:10:09,751 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:10:09" (1/1) ... [2018-10-24 16:10:09,790 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:10:09" (1/1) ... [2018-10-24 16:10:09,790 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:10:09" (1/1) ... [2018-10-24 16:10:09,954 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:10:09" (1/1) ... [2018-10-24 16:10:10,005 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:10:09" (1/1) ... [2018-10-24 16:10:10,086 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:10:09" (1/1) ... [2018-10-24 16:10:10,190 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 16:10:10,190 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 16:10:10,190 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 16:10:10,190 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 16:10:10,191 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:10:09" (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 [2018-10-24 16:10:10,260 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-10-24 16:10:10,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 16:10:10,261 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 16:10:18,632 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 16:10:18,633 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:10:18 BoogieIcfgContainer [2018-10-24 16:10:18,633 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 16:10:18,634 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 16:10:18,634 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 16:10:18,637 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 16:10:18,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 04:10:06" (1/3) ... [2018-10-24 16:10:18,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6502e358 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:10:18, skipping insertion in model container [2018-10-24 16:10:18,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 04:10:09" (2/3) ... [2018-10-24 16:10:18,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6502e358 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 04:10:18, skipping insertion in model container [2018-10-24 16:10:18,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 04:10:18" (3/3) ... [2018-10-24 16:10:18,643 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label09_true-unreach-call.c [2018-10-24 16:10:18,653 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 16:10:18,663 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 16:10:18,681 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 16:10:18,726 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-24 16:10:18,727 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 16:10:18,727 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 16:10:18,727 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 16:10:18,728 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 16:10:18,728 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 16:10:18,728 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 16:10:18,728 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 16:10:18,728 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 16:10:18,765 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states. [2018-10-24 16:10:18,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-10-24 16:10:18,775 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:10:18,777 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:10:18,779 INFO L424 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:10:18,785 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:10:18,786 INFO L82 PathProgramCache]: Analyzing trace with hash -757100326, now seen corresponding path program 1 times [2018-10-24 16:10:18,788 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:10:18,789 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:10:18,847 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:10:18,847 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:10:18,847 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:10:18,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:10:19,319 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-24 16:10:19,498 WARN L179 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 20 [2018-10-24 16:10:19,992 WARN L179 SmtUtils]: Spent 419.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 21 [2018-10-24 16:10:20,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:10:20,273 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:10:20,273 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 16:10:20,278 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 16:10:20,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 16:10:20,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2018-10-24 16:10:20,292 INFO L87 Difference]: Start difference. First operand 819 states. Second operand 6 states. [2018-10-24 16:10:20,497 WARN L179 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-10-24 16:10:37,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:10:37,823 INFO L93 Difference]: Finished difference Result 3901 states and 7636 transitions. [2018-10-24 16:10:37,824 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-10-24 16:10:37,825 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 67 [2018-10-24 16:10:37,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:10:37,876 INFO L225 Difference]: With dead ends: 3901 [2018-10-24 16:10:37,876 INFO L226 Difference]: Without dead ends: 3072 [2018-10-24 16:10:37,884 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2018-10-24 16:10:37,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3072 states. [2018-10-24 16:10:38,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3072 to 3072. [2018-10-24 16:10:38,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3072 states. [2018-10-24 16:10:38,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3072 states to 3072 states and 5067 transitions. [2018-10-24 16:10:38,041 INFO L78 Accepts]: Start accepts. Automaton has 3072 states and 5067 transitions. Word has length 67 [2018-10-24 16:10:38,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:10:38,042 INFO L481 AbstractCegarLoop]: Abstraction has 3072 states and 5067 transitions. [2018-10-24 16:10:38,043 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 16:10:38,043 INFO L276 IsEmpty]: Start isEmpty. Operand 3072 states and 5067 transitions. [2018-10-24 16:10:38,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-10-24 16:10:38,053 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:10:38,053 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 16:10:38,053 INFO L424 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:10:38,054 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:10:38,054 INFO L82 PathProgramCache]: Analyzing trace with hash 2087852650, now seen corresponding path program 1 times [2018-10-24 16:10:38,054 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:10:38,054 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:10:38,057 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:10:38,057 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:10:38,057 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:10:38,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:10:38,543 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 59 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:10:38,543 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:10:38,543 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 [2018-10-24 16:10:38,552 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:10:38,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:10:38,633 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:10:38,849 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:10:38,876 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:10:38,876 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2018-10-24 16:10:38,877 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 16:10:38,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 16:10:38,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 16:10:38,878 INFO L87 Difference]: Start difference. First operand 3072 states and 5067 transitions. Second operand 7 states. [2018-10-24 16:11:10,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:11:10,891 INFO L93 Difference]: Finished difference Result 20462 states and 37421 transitions. [2018-10-24 16:11:10,891 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-24 16:11:10,891 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 139 [2018-10-24 16:11:10,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:11:10,963 INFO L225 Difference]: With dead ends: 20462 [2018-10-24 16:11:10,964 INFO L226 Difference]: Without dead ends: 15133 [2018-10-24 16:11:10,974 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 143 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=54, Invalid=78, Unknown=0, NotChecked=0, Total=132 [2018-10-24 16:11:10,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15133 states. [2018-10-24 16:11:11,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15133 to 7583. [2018-10-24 16:11:11,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7583 states. [2018-10-24 16:11:11,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7583 states to 7583 states and 9797 transitions. [2018-10-24 16:11:11,164 INFO L78 Accepts]: Start accepts. Automaton has 7583 states and 9797 transitions. Word has length 139 [2018-10-24 16:11:11,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:11:11,165 INFO L481 AbstractCegarLoop]: Abstraction has 7583 states and 9797 transitions. [2018-10-24 16:11:11,165 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 16:11:11,165 INFO L276 IsEmpty]: Start isEmpty. Operand 7583 states and 9797 transitions. [2018-10-24 16:11:11,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2018-10-24 16:11:11,175 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:11:11,175 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:11:11,175 INFO L424 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:11:11,176 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:11:11,176 INFO L82 PathProgramCache]: Analyzing trace with hash 2054372, now seen corresponding path program 1 times [2018-10-24 16:11:11,176 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:11:11,176 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:11:11,177 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:11:11,177 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:11:11,177 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:11:11,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:11:11,982 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 180 proven. 4 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-10-24 16:11:11,982 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:11:11,983 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-24 16:11:11,990 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:11:12,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:11:12,064 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:11:12,156 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 129 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2018-10-24 16:11:12,190 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:11:12,190 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [5] total 6 [2018-10-24 16:11:12,191 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 16:11:12,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 16:11:12,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-10-24 16:11:12,192 INFO L87 Difference]: Start difference. First operand 7583 states and 9797 transitions. Second operand 7 states. [2018-10-24 16:11:24,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:11:24,992 INFO L93 Difference]: Finished difference Result 28701 states and 37293 transitions. [2018-10-24 16:11:24,993 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 16:11:24,993 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 279 [2018-10-24 16:11:24,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:11:25,058 INFO L225 Difference]: With dead ends: 28701 [2018-10-24 16:11:25,059 INFO L226 Difference]: Without dead ends: 21120 [2018-10-24 16:11:25,071 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 279 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2018-10-24 16:11:25,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21120 states. [2018-10-24 16:11:25,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21120 to 21120. [2018-10-24 16:11:25,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21120 states. [2018-10-24 16:11:25,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21120 states to 21120 states and 24054 transitions. [2018-10-24 16:11:25,387 INFO L78 Accepts]: Start accepts. Automaton has 21120 states and 24054 transitions. Word has length 279 [2018-10-24 16:11:25,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:11:25,388 INFO L481 AbstractCegarLoop]: Abstraction has 21120 states and 24054 transitions. [2018-10-24 16:11:25,388 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 16:11:25,388 INFO L276 IsEmpty]: Start isEmpty. Operand 21120 states and 24054 transitions. [2018-10-24 16:11:25,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2018-10-24 16:11:25,396 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:11:25,396 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:11:25,396 INFO L424 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:11:25,397 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:11:25,397 INFO L82 PathProgramCache]: Analyzing trace with hash -220240638, now seen corresponding path program 1 times [2018-10-24 16:11:25,397 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:11:25,397 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:11:25,398 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:11:25,398 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:11:25,399 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:11:25,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:11:25,805 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 129 proven. 4 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2018-10-24 16:11:25,805 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:11:25,805 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-24 16:11:25,813 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:11:25,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:11:25,883 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:11:25,930 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 210 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 16:11:25,950 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 16:11:25,951 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2018-10-24 16:11:25,951 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:11:25,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:11:25,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:11:25,952 INFO L87 Difference]: Start difference. First operand 21120 states and 24054 transitions. Second operand 4 states. [2018-10-24 16:11:35,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:11:35,150 INFO L93 Difference]: Finished difference Result 69371 states and 80694 transitions. [2018-10-24 16:11:35,151 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:11:35,151 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 291 [2018-10-24 16:11:35,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:11:35,252 INFO L225 Difference]: With dead ends: 69371 [2018-10-24 16:11:35,253 INFO L226 Difference]: Without dead ends: 49005 [2018-10-24 16:11:35,274 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 291 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:11:35,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49005 states. [2018-10-24 16:11:35,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49005 to 30144. [2018-10-24 16:11:35,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30144 states. [2018-10-24 16:11:35,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30144 states to 30144 states and 34300 transitions. [2018-10-24 16:11:35,843 INFO L78 Accepts]: Start accepts. Automaton has 30144 states and 34300 transitions. Word has length 291 [2018-10-24 16:11:35,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:11:35,844 INFO L481 AbstractCegarLoop]: Abstraction has 30144 states and 34300 transitions. [2018-10-24 16:11:35,844 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:11:35,844 INFO L276 IsEmpty]: Start isEmpty. Operand 30144 states and 34300 transitions. [2018-10-24 16:11:35,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 400 [2018-10-24 16:11:35,858 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:11:35,858 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:11:35,858 INFO L424 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:11:35,859 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:11:35,859 INFO L82 PathProgramCache]: Analyzing trace with hash 44678380, now seen corresponding path program 1 times [2018-10-24 16:11:35,859 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:11:35,859 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:11:35,860 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:11:35,860 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:11:35,861 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:11:35,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:11:36,356 INFO L134 CoverageAnalysis]: Checked inductivity of 462 backedges. 383 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2018-10-24 16:11:36,356 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:11:36,357 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:11:36,357 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:11:36,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:11:36,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:11:36,359 INFO L87 Difference]: Start difference. First operand 30144 states and 34300 transitions. Second operand 4 states. [2018-10-24 16:11:45,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:11:45,007 INFO L93 Difference]: Finished difference Result 71566 states and 82345 transitions. [2018-10-24 16:11:45,007 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:11:45,008 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 399 [2018-10-24 16:11:45,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:11:45,072 INFO L225 Difference]: With dead ends: 71566 [2018-10-24 16:11:45,072 INFO L226 Difference]: Without dead ends: 42176 [2018-10-24 16:11:45,096 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:11:45,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42176 states. [2018-10-24 16:11:45,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42176 to 42176. [2018-10-24 16:11:45,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42176 states. [2018-10-24 16:11:45,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42176 states to 42176 states and 47577 transitions. [2018-10-24 16:11:45,557 INFO L78 Accepts]: Start accepts. Automaton has 42176 states and 47577 transitions. Word has length 399 [2018-10-24 16:11:45,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:11:45,558 INFO L481 AbstractCegarLoop]: Abstraction has 42176 states and 47577 transitions. [2018-10-24 16:11:45,558 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:11:45,558 INFO L276 IsEmpty]: Start isEmpty. Operand 42176 states and 47577 transitions. [2018-10-24 16:11:45,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2018-10-24 16:11:45,576 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:11:45,577 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, 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, 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] [2018-10-24 16:11:45,577 INFO L424 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:11:45,578 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:11:45,578 INFO L82 PathProgramCache]: Analyzing trace with hash -1687742139, now seen corresponding path program 1 times [2018-10-24 16:11:45,578 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:11:45,578 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:11:45,579 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:11:45,579 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:11:45,579 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:11:45,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:11:46,007 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 389 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-10-24 16:11:46,008 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:11:46,008 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:11:46,009 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:11:46,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:11:46,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:11:46,009 INFO L87 Difference]: Start difference. First operand 42176 states and 47577 transitions. Second operand 4 states. [2018-10-24 16:11:53,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:11:53,686 INFO L93 Difference]: Finished difference Result 102398 states and 115192 transitions. [2018-10-24 16:11:53,692 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:11:53,692 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 409 [2018-10-24 16:11:53,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:11:53,765 INFO L225 Difference]: With dead ends: 102398 [2018-10-24 16:11:53,765 INFO L226 Difference]: Without dead ends: 60223 [2018-10-24 16:11:53,801 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:11:53,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60223 states. [2018-10-24 16:11:54,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60223 to 60223. [2018-10-24 16:11:54,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60223 states. [2018-10-24 16:11:54,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60223 states to 60223 states and 64544 transitions. [2018-10-24 16:11:54,847 INFO L78 Accepts]: Start accepts. Automaton has 60223 states and 64544 transitions. Word has length 409 [2018-10-24 16:11:54,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:11:54,847 INFO L481 AbstractCegarLoop]: Abstraction has 60223 states and 64544 transitions. [2018-10-24 16:11:54,847 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:11:54,848 INFO L276 IsEmpty]: Start isEmpty. Operand 60223 states and 64544 transitions. [2018-10-24 16:11:54,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 452 [2018-10-24 16:11:54,872 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:11:54,873 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, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-10-24 16:11:54,873 INFO L424 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:11:54,873 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:11:54,873 INFO L82 PathProgramCache]: Analyzing trace with hash -369277302, now seen corresponding path program 1 times [2018-10-24 16:11:54,874 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:11:54,874 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:11:54,875 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:11:54,881 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:11:54,881 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:11:54,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:11:55,282 INFO L134 CoverageAnalysis]: Checked inductivity of 716 backedges. 566 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2018-10-24 16:11:55,283 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:11:55,283 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:11:55,284 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 16:11:55,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 16:11:55,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:11:55,284 INFO L87 Difference]: Start difference. First operand 60223 states and 64544 transitions. Second operand 3 states. [2018-10-24 16:12:00,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:12:00,012 INFO L93 Difference]: Finished difference Result 133228 states and 143498 transitions. [2018-10-24 16:12:00,013 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 16:12:00,013 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 451 [2018-10-24 16:12:00,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:12:00,094 INFO L225 Difference]: With dead ends: 133228 [2018-10-24 16:12:00,094 INFO L226 Difference]: Without dead ends: 73759 [2018-10-24 16:12:00,134 INFO L605 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 [2018-10-24 16:12:00,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73759 states. [2018-10-24 16:12:00,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73759 to 73007. [2018-10-24 16:12:00,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73007 states. [2018-10-24 16:12:00,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73007 states to 73007 states and 77211 transitions. [2018-10-24 16:12:00,878 INFO L78 Accepts]: Start accepts. Automaton has 73007 states and 77211 transitions. Word has length 451 [2018-10-24 16:12:00,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:12:00,878 INFO L481 AbstractCegarLoop]: Abstraction has 73007 states and 77211 transitions. [2018-10-24 16:12:00,878 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 16:12:00,878 INFO L276 IsEmpty]: Start isEmpty. Operand 73007 states and 77211 transitions. [2018-10-24 16:12:00,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 480 [2018-10-24 16:12:00,901 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:12:00,901 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, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:12:00,902 INFO L424 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:12:00,902 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:12:00,902 INFO L82 PathProgramCache]: Analyzing trace with hash -1068466992, now seen corresponding path program 1 times [2018-10-24 16:12:00,902 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:12:00,902 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:12:00,903 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:12:00,903 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:12:00,903 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:12:00,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:12:02,137 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 259 proven. 0 refuted. 0 times theorem prover too weak. 489 trivial. 0 not checked. [2018-10-24 16:12:02,138 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:12:02,138 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:12:02,138 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:12:02,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:12:02,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:12:02,139 INFO L87 Difference]: Start difference. First operand 73007 states and 77211 transitions. Second operand 4 states. [2018-10-24 16:12:10,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:12:10,854 INFO L93 Difference]: Finished difference Result 146012 states and 154425 transitions. [2018-10-24 16:12:10,854 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:12:10,855 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 479 [2018-10-24 16:12:10,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:12:10,926 INFO L225 Difference]: With dead ends: 146012 [2018-10-24 16:12:10,926 INFO L226 Difference]: Without dead ends: 73759 [2018-10-24 16:12:10,966 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:12:11,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73759 states. [2018-10-24 16:12:11,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73759 to 73007. [2018-10-24 16:12:11,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73007 states. [2018-10-24 16:12:11,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73007 states to 73007 states and 76813 transitions. [2018-10-24 16:12:11,592 INFO L78 Accepts]: Start accepts. Automaton has 73007 states and 76813 transitions. Word has length 479 [2018-10-24 16:12:11,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:12:11,593 INFO L481 AbstractCegarLoop]: Abstraction has 73007 states and 76813 transitions. [2018-10-24 16:12:11,593 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:12:11,593 INFO L276 IsEmpty]: Start isEmpty. Operand 73007 states and 76813 transitions. [2018-10-24 16:12:11,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 564 [2018-10-24 16:12:11,615 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:12:11,615 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, 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, 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, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:12:11,615 INFO L424 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:12:11,616 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:12:11,616 INFO L82 PathProgramCache]: Analyzing trace with hash 686703586, now seen corresponding path program 1 times [2018-10-24 16:12:11,616 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:12:11,616 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:12:11,616 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:12:11,617 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:12:11,617 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:12:11,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:12:12,515 INFO L134 CoverageAnalysis]: Checked inductivity of 858 backedges. 558 proven. 0 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2018-10-24 16:12:12,515 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:12:12,516 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:12:12,516 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:12:12,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:12:12,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:12:12,517 INFO L87 Difference]: Start difference. First operand 73007 states and 76813 transitions. Second operand 4 states. [2018-10-24 16:12:19,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:12:19,776 INFO L93 Difference]: Finished difference Result 154284 states and 162904 transitions. [2018-10-24 16:12:19,776 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:12:19,776 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 563 [2018-10-24 16:12:19,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:12:19,855 INFO L225 Difference]: With dead ends: 154284 [2018-10-24 16:12:19,856 INFO L226 Difference]: Without dead ends: 82031 [2018-10-24 16:12:19,896 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:12:19,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82031 states. [2018-10-24 16:12:20,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82031 to 81279. [2018-10-24 16:12:20,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81279 states. [2018-10-24 16:12:20,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81279 states to 81279 states and 85349 transitions. [2018-10-24 16:12:20,694 INFO L78 Accepts]: Start accepts. Automaton has 81279 states and 85349 transitions. Word has length 563 [2018-10-24 16:12:20,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:12:20,695 INFO L481 AbstractCegarLoop]: Abstraction has 81279 states and 85349 transitions. [2018-10-24 16:12:20,696 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:12:20,696 INFO L276 IsEmpty]: Start isEmpty. Operand 81279 states and 85349 transitions. [2018-10-24 16:12:20,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 575 [2018-10-24 16:12:20,728 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:12:20,728 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:12:20,729 INFO L424 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:12:20,729 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:12:20,729 INFO L82 PathProgramCache]: Analyzing trace with hash -1045696149, now seen corresponding path program 1 times [2018-10-24 16:12:20,729 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:12:20,729 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:12:20,730 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:12:20,730 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:12:20,730 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:12:20,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:12:21,646 INFO L134 CoverageAnalysis]: Checked inductivity of 933 backedges. 751 proven. 0 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2018-10-24 16:12:21,646 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:12:21,647 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 16:12:21,647 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 16:12:21,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 16:12:21,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:12:21,650 INFO L87 Difference]: Start difference. First operand 81279 states and 85349 transitions. Second operand 4 states. [2018-10-24 16:12:32,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:12:32,239 INFO L93 Difference]: Finished difference Result 161804 states and 169939 transitions. [2018-10-24 16:12:32,239 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 16:12:32,239 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 574 [2018-10-24 16:12:32,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:12:32,320 INFO L225 Difference]: With dead ends: 161804 [2018-10-24 16:12:32,320 INFO L226 Difference]: Without dead ends: 81279 [2018-10-24 16:12:32,360 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 16:12:32,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81279 states. [2018-10-24 16:12:32,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81279 to 79775. [2018-10-24 16:12:32,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79775 states. [2018-10-24 16:12:32,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79775 states to 79775 states and 82869 transitions. [2018-10-24 16:12:32,961 INFO L78 Accepts]: Start accepts. Automaton has 79775 states and 82869 transitions. Word has length 574 [2018-10-24 16:12:32,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:12:32,962 INFO L481 AbstractCegarLoop]: Abstraction has 79775 states and 82869 transitions. [2018-10-24 16:12:32,962 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 16:12:32,962 INFO L276 IsEmpty]: Start isEmpty. Operand 79775 states and 82869 transitions. [2018-10-24 16:12:32,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 650 [2018-10-24 16:12:32,980 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:12:32,980 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, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:12:32,981 INFO L424 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:12:32,981 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:12:32,981 INFO L82 PathProgramCache]: Analyzing trace with hash -266169991, now seen corresponding path program 1 times [2018-10-24 16:12:32,981 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:12:32,981 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:12:32,982 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:12:32,982 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:12:32,982 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:12:33,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:12:33,464 INFO L134 CoverageAnalysis]: Checked inductivity of 1044 backedges. 259 proven. 0 refuted. 0 times theorem prover too weak. 785 trivial. 0 not checked. [2018-10-24 16:12:33,464 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 16:12:33,464 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 16:12:33,465 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 16:12:33,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 16:12:33,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 16:12:33,466 INFO L87 Difference]: Start difference. First operand 79775 states and 82869 transitions. Second operand 3 states. [2018-10-24 16:12:39,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:12:39,619 INFO L93 Difference]: Finished difference Result 159544 states and 165901 transitions. [2018-10-24 16:12:39,620 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 16:12:39,620 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 649 [2018-10-24 16:12:39,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:12:39,708 INFO L225 Difference]: With dead ends: 159544 [2018-10-24 16:12:39,708 INFO L226 Difference]: Without dead ends: 80523 [2018-10-24 16:12:39,754 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 [2018-10-24 16:12:39,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80523 states. [2018-10-24 16:12:40,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80523 to 80523. [2018-10-24 16:12:40,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80523 states. [2018-10-24 16:12:40,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80523 states to 80523 states and 83241 transitions. [2018-10-24 16:12:40,415 INFO L78 Accepts]: Start accepts. Automaton has 80523 states and 83241 transitions. Word has length 649 [2018-10-24 16:12:40,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:12:40,415 INFO L481 AbstractCegarLoop]: Abstraction has 80523 states and 83241 transitions. [2018-10-24 16:12:40,416 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 16:12:40,416 INFO L276 IsEmpty]: Start isEmpty. Operand 80523 states and 83241 transitions. [2018-10-24 16:12:40,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 976 [2018-10-24 16:12:40,459 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:12:40,459 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, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:12:40,460 INFO L424 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:12:40,460 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:12:40,460 INFO L82 PathProgramCache]: Analyzing trace with hash 1175089573, now seen corresponding path program 1 times [2018-10-24 16:12:40,460 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:12:40,461 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:12:40,461 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:12:40,461 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:12:40,462 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:12:40,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:12:44,593 INFO L134 CoverageAnalysis]: Checked inductivity of 1076 backedges. 691 proven. 5 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2018-10-24 16:12:44,593 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:12:44,593 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-24 16:12:44,601 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:12:44,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:12:44,844 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:12:45,148 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-24 16:12:47,140 INFO L134 CoverageAnalysis]: Checked inductivity of 1076 backedges. 631 proven. 65 refuted. 0 times theorem prover too weak. 380 trivial. 0 not checked. [2018-10-24 16:12:47,160 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 16:12:47,161 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5] total 11 [2018-10-24 16:12:47,162 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-10-24 16:12:47,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-10-24 16:12:47,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=66, Unknown=0, NotChecked=0, Total=110 [2018-10-24 16:12:47,163 INFO L87 Difference]: Start difference. First operand 80523 states and 83241 transitions. Second operand 11 states. [2018-10-24 16:13:14,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 16:13:14,019 INFO L93 Difference]: Finished difference Result 261305 states and 270643 transitions. [2018-10-24 16:13:14,020 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-24 16:13:14,020 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 975 [2018-10-24 16:13:14,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 16:13:14,243 INFO L225 Difference]: With dead ends: 261305 [2018-10-24 16:13:14,243 INFO L226 Difference]: Without dead ends: 178524 [2018-10-24 16:13:14,311 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 994 GetRequests, 978 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=102, Invalid=138, Unknown=0, NotChecked=0, Total=240 [2018-10-24 16:13:14,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178524 states. [2018-10-24 16:13:16,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178524 to 124108. [2018-10-24 16:13:16,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124108 states. [2018-10-24 16:13:16,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124108 states to 124108 states and 128129 transitions. [2018-10-24 16:13:16,128 INFO L78 Accepts]: Start accepts. Automaton has 124108 states and 128129 transitions. Word has length 975 [2018-10-24 16:13:16,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 16:13:16,129 INFO L481 AbstractCegarLoop]: Abstraction has 124108 states and 128129 transitions. [2018-10-24 16:13:16,129 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-10-24 16:13:16,129 INFO L276 IsEmpty]: Start isEmpty. Operand 124108 states and 128129 transitions. [2018-10-24 16:13:16,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1036 [2018-10-24 16:13:16,205 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 16:13:16,206 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, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 16:13:16,206 INFO L424 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 16:13:16,206 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 16:13:16,206 INFO L82 PathProgramCache]: Analyzing trace with hash 1200302459, now seen corresponding path program 1 times [2018-10-24 16:13:16,207 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-24 16:13:16,207 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-24 16:13:16,207 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:13:16,208 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:13:16,208 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 16:13:16,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:13:17,226 WARN L179 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 11 [2018-10-24 16:13:18,675 INFO L134 CoverageAnalysis]: Checked inductivity of 1076 backedges. 720 proven. 239 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2018-10-24 16:13:18,676 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 16:13:18,676 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-24 16:13:18,686 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 16:13:18,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 16:13:18,931 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 16:13:24,567 INFO L134 CoverageAnalysis]: Checked inductivity of 1076 backedges. 669 proven. 290 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2018-10-24 16:13:24,590 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-10-24 16:13:24,591 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6] total 13 [2018-10-24 16:13:24,592 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-10-24 16:13:24,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-10-24 16:13:24,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2018-10-24 16:13:24,593 INFO L87 Difference]: Start difference. First operand 124108 states and 128129 transitions. Second operand 13 states. Received shutdown request... [2018-10-24 16:14:04,003 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-10-24 16:14:04,004 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 16:14:04,011 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 16:14:04,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 04:14:04 BoogieIcfgContainer [2018-10-24 16:14:04,012 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 16:14:04,012 INFO L168 Benchmark]: Toolchain (without parser) took 237076.75 ms. Allocated memory was 1.5 GB in the beginning and 3.6 GB in the end (delta: 2.0 GB). Free memory was 1.4 GB in the beginning and 2.7 GB in the end (delta: -1.3 GB). Peak memory consumption was 769.2 MB. Max. memory is 7.1 GB. [2018-10-24 16:14:04,013 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 16:14:04,014 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2205.10 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: 203.5 MB). Peak memory consumption was 203.5 MB. Max. memory is 7.1 GB. [2018-10-24 16:14:04,015 INFO L168 Benchmark]: Boogie Procedure Inliner took 592.55 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 803.2 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -990.7 MB). Peak memory consumption was 68.9 MB. Max. memory is 7.1 GB. [2018-10-24 16:14:04,016 INFO L168 Benchmark]: Boogie Preprocessor took 450.68 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 47.5 MB). Peak memory consumption was 47.5 MB. Max. memory is 7.1 GB. [2018-10-24 16:14:04,017 INFO L168 Benchmark]: RCFGBuilder took 8443.19 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 212.3 MB). Free memory was 2.2 GB in the beginning and 2.3 GB in the end (delta: -177.2 MB). Peak memory consumption was 613.7 MB. Max. memory is 7.1 GB. [2018-10-24 16:14:04,018 INFO L168 Benchmark]: TraceAbstraction took 225377.46 ms. Allocated memory was 2.6 GB in the beginning and 3.6 GB in the end (delta: 1.0 GB). Free memory was 2.3 GB in the beginning and 2.7 GB in the end (delta: -359.6 MB). Peak memory consumption was 670.6 MB. Max. memory is 7.1 GB. [2018-10-24 16:14:04,023 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2205.10 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: 203.5 MB). Peak memory consumption was 203.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 592.55 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 803.2 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -990.7 MB). Peak memory consumption was 68.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 450.68 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 47.5 MB). Peak memory consumption was 47.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8443.19 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 212.3 MB). Free memory was 2.2 GB in the beginning and 2.3 GB in the end (delta: -177.2 MB). Peak memory consumption was 613.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 225377.46 ms. Allocated memory was 2.6 GB in the beginning and 3.6 GB in the end (delta: 1.0 GB). Free memory was 2.3 GB in the beginning and 2.7 GB in the end (delta: -359.6 MB). Peak memory consumption was 670.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 210]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 210). Cancelled while BasicCegarLoop was constructing difference of abstraction (124108states) and FLOYD_HOARE automaton (currently 42 states, 13 states before enhancement),while ReachableStatesComputation was computing reachable states (84894 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 819 locations, 1 error locations. TIMEOUT Result, 225.2s OverallTime, 13 OverallIterations, 5 TraceHistogramMax, 193.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 8048 SDtfs, 46333 SDslu, 1863 SDs, 0 SdLazy, 110984 SolverSat, 16923 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 157.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2885 GetRequests, 2773 SyntacticMatches, 16 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 659 ImplicationChecksByTransitivity, 5.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=124108occurred in iteration=12, 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: 7.9s AutomataMinimizationTime, 12 MinimizatonAttempts, 84587 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 14.5s InterpolantComputationTime, 9029 NumberOfCodeBlocks, 9029 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 9011 ConstructedInterpolants, 544 QuantifiedInterpolants, 46370654 SizeOfPredicates, 12 NumberOfNonLiveVariables, 3272 ConjunctsInSsa, 33 ConjunctsInUnsatCore, 18 InterpolantComputations, 11 PerfectInterpolantSequences, 9871/10483 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown