java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label37_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-06 19:07:04,902 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-06 19:07:04,904 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-06 19:07:04,916 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-06 19:07:04,917 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-06 19:07:04,918 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-06 19:07:04,919 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-06 19:07:04,921 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-06 19:07:04,924 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-06 19:07:04,925 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-06 19:07:04,925 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-06 19:07:04,926 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-06 19:07:04,927 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-06 19:07:04,928 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-06 19:07:04,929 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-06 19:07:04,930 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-06 19:07:04,931 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-06 19:07:04,933 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-06 19:07:04,935 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-06 19:07:04,937 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-06 19:07:04,938 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-06 19:07:04,940 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-06 19:07:04,942 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-06 19:07:04,965 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-64bit-Automizer_Default.epf [2018-11-06 19:07:04,996 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-06 19:07:04,996 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-06 19:07:04,997 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-06 19:07:04,997 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-11-06 19:07:04,998 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-06 19:07:04,998 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-06 19:07:04,998 INFO L133 SettingsManager]: * Use SBE=true [2018-11-06 19:07:04,998 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-06 19:07:04,999 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-06 19:07:04,999 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-06 19:07:04,999 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-06 19:07:04,999 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-06 19:07:04,999 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-06 19:07:04,999 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-06 19:07:05,000 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-06 19:07:05,000 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-06 19:07:05,000 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-06 19:07:05,000 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-06 19:07:05,000 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-06 19:07:05,001 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-06 19:07:05,001 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-06 19:07:05,001 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-06 19:07:05,001 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-06 19:07:05,001 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-06 19:07:05,002 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-06 19:07:05,002 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-06 19:07:05,002 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-06 19:07:05,002 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-06 19:07:05,046 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-06 19:07:05,058 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-06 19:07:05,062 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-06 19:07:05,064 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-06 19:07:05,064 INFO L276 PluginConnector]: CDTParser initialized [2018-11-06 19:07:05,065 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label37_false-unreach-call.c [2018-11-06 19:07:05,125 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38aa9b122/0f9e6e290c384094927623c7ace7826f/FLAG962cb3432 [2018-11-06 19:07:05,957 INFO L298 CDTParser]: Found 1 translation units. [2018-11-06 19:07:05,958 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label37_false-unreach-call.c [2018-11-06 19:07:05,986 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38aa9b122/0f9e6e290c384094927623c7ace7826f/FLAG962cb3432 [2018-11-06 19:07:06,001 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/38aa9b122/0f9e6e290c384094927623c7ace7826f [2018-11-06 19:07:06,011 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-06 19:07:06,012 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-06 19:07:06,013 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-06 19:07:06,013 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-06 19:07:06,018 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-06 19:07:06,019 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:07:06" (1/1) ... [2018-11-06 19:07:06,022 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e529910 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:07:06, skipping insertion in model container [2018-11-06 19:07:06,022 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:07:06" (1/1) ... [2018-11-06 19:07:06,033 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-06 19:07:06,189 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-06 19:07:07,485 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 19:07:07,490 INFO L189 MainTranslator]: Completed pre-run [2018-11-06 19:07:08,153 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-06 19:07:08,189 INFO L193 MainTranslator]: Completed translation [2018-11-06 19:07:08,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:07:08 WrapperNode [2018-11-06 19:07:08,190 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-06 19:07:08,191 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-06 19:07:08,192 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-06 19:07:08,192 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-06 19:07:08,203 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:07:08" (1/1) ... [2018-11-06 19:07:08,602 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:07:08" (1/1) ... [2018-11-06 19:07:08,930 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-06 19:07:08,930 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-06 19:07:08,930 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-06 19:07:08,931 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-06 19:07:08,943 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:07:08" (1/1) ... [2018-11-06 19:07:08,943 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:07:08" (1/1) ... [2018-11-06 19:07:08,987 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:07:08" (1/1) ... [2018-11-06 19:07:08,991 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:07:08" (1/1) ... [2018-11-06 19:07:09,143 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:07:08" (1/1) ... [2018-11-06 19:07:09,177 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:07:08" (1/1) ... [2018-11-06 19:07:09,231 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:07:08" (1/1) ... [2018-11-06 19:07:09,307 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-06 19:07:09,308 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-06 19:07:09,308 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-06 19:07:09,308 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-06 19:07:09,309 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:07:08" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-06 19:07:09,383 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-06 19:07:09,383 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-06 19:07:09,383 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-06 19:07:18,894 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-06 19:07:18,895 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:07:18 BoogieIcfgContainer [2018-11-06 19:07:18,895 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-06 19:07:18,896 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-06 19:07:18,896 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-06 19:07:18,900 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-06 19:07:18,900 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 07:07:06" (1/3) ... [2018-11-06 19:07:18,901 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@558bbba5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:07:18, skipping insertion in model container [2018-11-06 19:07:18,901 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:07:08" (2/3) ... [2018-11-06 19:07:18,901 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@558bbba5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:07:18, skipping insertion in model container [2018-11-06 19:07:18,902 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:07:18" (3/3) ... [2018-11-06 19:07:18,904 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label37_false-unreach-call.c [2018-11-06 19:07:18,914 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-06 19:07:18,926 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-06 19:07:18,946 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-06 19:07:19,001 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-06 19:07:19,001 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-06 19:07:19,002 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-06 19:07:19,002 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-06 19:07:19,002 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-06 19:07:19,002 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-06 19:07:19,002 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-06 19:07:19,002 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-06 19:07:19,002 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-06 19:07:19,062 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states. [2018-11-06 19:07:19,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2018-11-06 19:07:19,069 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:07:19,070 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:07:19,075 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:07:19,082 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:07:19,083 INFO L82 PathProgramCache]: Analyzing trace with hash 340357962, now seen corresponding path program 1 times [2018-11-06 19:07:19,085 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:07:19,085 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:07:19,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:07:19,143 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:07:19,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:07:19,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:07:19,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 19:07:19,406 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:07:19,407 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 19:07:19,411 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:07:19,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:07:19,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:07:19,431 INFO L87 Difference]: Start difference. First operand 819 states. Second operand 4 states. [2018-11-06 19:07:31,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:07:31,118 INFO L93 Difference]: Finished difference Result 3146 states and 6134 transitions. [2018-11-06 19:07:31,118 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:07:31,120 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2018-11-06 19:07:31,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:07:31,161 INFO L225 Difference]: With dead ends: 3146 [2018-11-06 19:07:31,161 INFO L226 Difference]: Without dead ends: 2320 [2018-11-06 19:07:31,168 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:07:31,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2320 states. [2018-11-06 19:07:31,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2320 to 2320. [2018-11-06 19:07:31,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2320 states. [2018-11-06 19:07:31,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2320 states to 2320 states and 4229 transitions. [2018-11-06 19:07:31,338 INFO L78 Accepts]: Start accepts. Automaton has 2320 states and 4229 transitions. Word has length 14 [2018-11-06 19:07:31,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:07:31,339 INFO L480 AbstractCegarLoop]: Abstraction has 2320 states and 4229 transitions. [2018-11-06 19:07:31,339 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:07:31,339 INFO L276 IsEmpty]: Start isEmpty. Operand 2320 states and 4229 transitions. [2018-11-06 19:07:31,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-11-06 19:07:31,343 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:07:31,343 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:07:31,343 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:07:31,344 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:07:31,344 INFO L82 PathProgramCache]: Analyzing trace with hash 1309216847, now seen corresponding path program 1 times [2018-11-06 19:07:31,344 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:07:31,344 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:07:31,345 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:07:31,346 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:07:31,346 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:07:31,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:07:31,676 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 19:07:31,676 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:07:31,677 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 19:07:31,679 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:07:31,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:07:31,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:07:31,680 INFO L87 Difference]: Start difference. First operand 2320 states and 4229 transitions. Second operand 4 states. [2018-11-06 19:07:42,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:07:42,161 INFO L93 Difference]: Finished difference Result 9150 states and 16788 transitions. [2018-11-06 19:07:42,162 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:07:42,162 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 90 [2018-11-06 19:07:42,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:07:42,197 INFO L225 Difference]: With dead ends: 9150 [2018-11-06 19:07:42,197 INFO L226 Difference]: Without dead ends: 6832 [2018-11-06 19:07:42,202 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:07:42,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6832 states. [2018-11-06 19:07:42,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6832 to 6832. [2018-11-06 19:07:42,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6832 states. [2018-11-06 19:07:42,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6832 states to 6832 states and 10629 transitions. [2018-11-06 19:07:42,339 INFO L78 Accepts]: Start accepts. Automaton has 6832 states and 10629 transitions. Word has length 90 [2018-11-06 19:07:42,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:07:42,340 INFO L480 AbstractCegarLoop]: Abstraction has 6832 states and 10629 transitions. [2018-11-06 19:07:42,340 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:07:42,340 INFO L276 IsEmpty]: Start isEmpty. Operand 6832 states and 10629 transitions. [2018-11-06 19:07:42,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2018-11-06 19:07:42,344 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:07:42,344 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:07:42,344 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:07:42,344 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:07:42,345 INFO L82 PathProgramCache]: Analyzing trace with hash -251409824, now seen corresponding path program 1 times [2018-11-06 19:07:42,345 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:07:42,345 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:07:42,346 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:07:42,346 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:07:42,346 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:07:42,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:07:42,674 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 19:07:42,676 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:07:42,676 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 19:07:42,676 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:07:42,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:07:42,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:07:42,677 INFO L87 Difference]: Start difference. First operand 6832 states and 10629 transitions. Second operand 4 states. [2018-11-06 19:07:50,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:07:50,148 INFO L93 Difference]: Finished difference Result 27260 states and 42449 transitions. [2018-11-06 19:07:50,149 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:07:50,149 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 96 [2018-11-06 19:07:50,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:07:50,226 INFO L225 Difference]: With dead ends: 27260 [2018-11-06 19:07:50,226 INFO L226 Difference]: Without dead ends: 20430 [2018-11-06 19:07:50,238 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:07:50,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20430 states. [2018-11-06 19:07:50,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20430 to 13600. [2018-11-06 19:07:50,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13600 states. [2018-11-06 19:07:50,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13600 states to 13600 states and 19341 transitions. [2018-11-06 19:07:50,547 INFO L78 Accepts]: Start accepts. Automaton has 13600 states and 19341 transitions. Word has length 96 [2018-11-06 19:07:50,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:07:50,547 INFO L480 AbstractCegarLoop]: Abstraction has 13600 states and 19341 transitions. [2018-11-06 19:07:50,547 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:07:50,552 INFO L276 IsEmpty]: Start isEmpty. Operand 13600 states and 19341 transitions. [2018-11-06 19:07:50,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-11-06 19:07:50,559 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:07:50,559 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:07:50,559 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:07:50,559 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:07:50,560 INFO L82 PathProgramCache]: Analyzing trace with hash -1742806893, now seen corresponding path program 1 times [2018-11-06 19:07:50,560 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:07:50,560 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:07:50,563 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:07:50,563 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:07:50,563 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:07:50,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:07:50,882 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 19:07:50,882 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:07:50,882 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 19:07:50,883 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:07:50,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:07:50,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:07:50,883 INFO L87 Difference]: Start difference. First operand 13600 states and 19341 transitions. Second operand 4 states. [2018-11-06 19:07:58,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:07:58,944 INFO L93 Difference]: Finished difference Result 52783 states and 74748 transitions. [2018-11-06 19:07:58,944 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:07:58,944 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 114 [2018-11-06 19:07:58,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:07:59,021 INFO L225 Difference]: With dead ends: 52783 [2018-11-06 19:07:59,022 INFO L226 Difference]: Without dead ends: 39185 [2018-11-06 19:07:59,041 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:07:59,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39185 states. [2018-11-06 19:07:59,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39185 to 26384. [2018-11-06 19:07:59,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26384 states. [2018-11-06 19:07:59,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26384 states to 26384 states and 33902 transitions. [2018-11-06 19:07:59,521 INFO L78 Accepts]: Start accepts. Automaton has 26384 states and 33902 transitions. Word has length 114 [2018-11-06 19:07:59,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:07:59,521 INFO L480 AbstractCegarLoop]: Abstraction has 26384 states and 33902 transitions. [2018-11-06 19:07:59,521 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:07:59,522 INFO L276 IsEmpty]: Start isEmpty. Operand 26384 states and 33902 transitions. [2018-11-06 19:07:59,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-11-06 19:07:59,526 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:07:59,526 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:07:59,526 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:07:59,527 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:07:59,527 INFO L82 PathProgramCache]: Analyzing trace with hash -882986230, now seen corresponding path program 1 times [2018-11-06 19:07:59,527 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:07:59,527 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:07:59,532 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:07:59,533 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:07:59,533 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:07:59,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:07:59,869 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-11-06 19:08:00,377 WARN L179 SmtUtils]: Spent 457.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 20 [2018-11-06 19:08:00,551 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 20 [2018-11-06 19:08:00,808 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 19:08:00,809 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 19:08:00,809 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 19:08:00,827 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:08:00,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:08:00,908 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 19:08:01,315 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 19:08:01,344 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 19:08:01,345 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 7 [2018-11-06 19:08:01,346 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-06 19:08:01,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-06 19:08:01,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-06 19:08:01,348 INFO L87 Difference]: Start difference. First operand 26384 states and 33902 transitions. Second operand 8 states. [2018-11-06 19:08:22,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:08:22,628 INFO L93 Difference]: Finished difference Result 79839 states and 102700 transitions. [2018-11-06 19:08:22,628 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-06 19:08:22,629 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 156 [2018-11-06 19:08:22,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:08:22,746 INFO L225 Difference]: With dead ends: 79839 [2018-11-06 19:08:22,746 INFO L226 Difference]: Without dead ends: 53457 [2018-11-06 19:08:22,777 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 155 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2018-11-06 19:08:22,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53457 states. [2018-11-06 19:08:23,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53457 to 52704. [2018-11-06 19:08:23,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52704 states. [2018-11-06 19:08:23,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52704 states to 52704 states and 65734 transitions. [2018-11-06 19:08:23,800 INFO L78 Accepts]: Start accepts. Automaton has 52704 states and 65734 transitions. Word has length 156 [2018-11-06 19:08:23,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:08:23,800 INFO L480 AbstractCegarLoop]: Abstraction has 52704 states and 65734 transitions. [2018-11-06 19:08:23,801 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-06 19:08:23,801 INFO L276 IsEmpty]: Start isEmpty. Operand 52704 states and 65734 transitions. [2018-11-06 19:08:23,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2018-11-06 19:08:23,809 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:08:23,809 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:08:23,811 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:08:23,812 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:08:23,812 INFO L82 PathProgramCache]: Analyzing trace with hash -1392819578, now seen corresponding path program 1 times [2018-11-06 19:08:23,812 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:08:23,812 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:08:23,813 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:08:23,813 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:08:23,814 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:08:23,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:08:24,233 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2018-11-06 19:08:24,234 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:08:24,234 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-06 19:08:24,235 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-06 19:08:24,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-06 19:08:24,235 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 19:08:24,235 INFO L87 Difference]: Start difference. First operand 52704 states and 65734 transitions. Second operand 3 states. [2018-11-06 19:08:32,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:08:32,954 INFO L93 Difference]: Finished difference Result 105406 states and 131466 transitions. [2018-11-06 19:08:32,954 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-06 19:08:32,954 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 274 [2018-11-06 19:08:32,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:08:33,030 INFO L225 Difference]: With dead ends: 105406 [2018-11-06 19:08:33,031 INFO L226 Difference]: Without dead ends: 52704 [2018-11-06 19:08:33,074 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 4 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-06 19:08:33,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52704 states. [2018-11-06 19:08:33,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52704 to 52704. [2018-11-06 19:08:33,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52704 states. [2018-11-06 19:08:33,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52704 states to 52704 states and 63215 transitions. [2018-11-06 19:08:33,715 INFO L78 Accepts]: Start accepts. Automaton has 52704 states and 63215 transitions. Word has length 274 [2018-11-06 19:08:33,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:08:33,716 INFO L480 AbstractCegarLoop]: Abstraction has 52704 states and 63215 transitions. [2018-11-06 19:08:33,716 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-06 19:08:33,716 INFO L276 IsEmpty]: Start isEmpty. Operand 52704 states and 63215 transitions. [2018-11-06 19:08:33,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2018-11-06 19:08:33,748 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:08:33,748 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:08:33,749 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:08:33,749 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:08:33,749 INFO L82 PathProgramCache]: Analyzing trace with hash 711428642, now seen corresponding path program 1 times [2018-11-06 19:08:33,749 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:08:33,749 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:08:33,750 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:08:33,750 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:08:33,751 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:08:33,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:08:34,266 WARN L179 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 9 [2018-11-06 19:08:34,565 WARN L179 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 9 [2018-11-06 19:08:34,808 WARN L179 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 19 [2018-11-06 19:08:34,976 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 89 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 19:08:34,976 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 19:08:34,976 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 19:08:34,987 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:08:35,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:08:35,109 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 19:08:35,324 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 19:08:35,345 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 19:08:35,345 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2018-11-06 19:08:35,347 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-06 19:08:35,347 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-06 19:08:35,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-11-06 19:08:35,348 INFO L87 Difference]: Start difference. First operand 52704 states and 63215 transitions. Second operand 6 states. [2018-11-06 19:08:48,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:08:48,884 INFO L93 Difference]: Finished difference Result 129502 states and 152222 transitions. [2018-11-06 19:08:48,884 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-06 19:08:48,885 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 439 [2018-11-06 19:08:48,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:08:48,969 INFO L225 Difference]: With dead ends: 129502 [2018-11-06 19:08:48,969 INFO L226 Difference]: Without dead ends: 74541 [2018-11-06 19:08:49,011 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 449 GetRequests, 440 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2018-11-06 19:08:49,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74541 states. [2018-11-06 19:08:50,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74541 to 54207. [2018-11-06 19:08:50,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54207 states. [2018-11-06 19:08:50,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54207 states to 54207 states and 63022 transitions. [2018-11-06 19:08:50,165 INFO L78 Accepts]: Start accepts. Automaton has 54207 states and 63022 transitions. Word has length 439 [2018-11-06 19:08:50,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:08:50,165 INFO L480 AbstractCegarLoop]: Abstraction has 54207 states and 63022 transitions. [2018-11-06 19:08:50,166 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-06 19:08:50,166 INFO L276 IsEmpty]: Start isEmpty. Operand 54207 states and 63022 transitions. [2018-11-06 19:08:50,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 590 [2018-11-06 19:08:50,210 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:08:50,210 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:08:50,211 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:08:50,211 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:08:50,211 INFO L82 PathProgramCache]: Analyzing trace with hash 1293834870, now seen corresponding path program 1 times [2018-11-06 19:08:50,211 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:08:50,212 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:08:50,213 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:08:50,213 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:08:50,213 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:08:50,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:08:50,901 WARN L179 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-11-06 19:08:51,651 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 303 proven. 8 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-11-06 19:08:51,652 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 19:08:51,652 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 19:08:51,660 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:08:51,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:08:51,816 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 19:08:53,194 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 225 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 19:08:53,214 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 19:08:53,215 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 10 [2018-11-06 19:08:53,216 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-06 19:08:53,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-06 19:08:53,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2018-11-06 19:08:53,217 INFO L87 Difference]: Start difference. First operand 54207 states and 63022 transitions. Second operand 11 states. [2018-11-06 19:09:12,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:09:12,237 INFO L93 Difference]: Finished difference Result 109165 states and 126801 transitions. [2018-11-06 19:09:12,237 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-06 19:09:12,238 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 589 [2018-11-06 19:09:12,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:09:12,319 INFO L225 Difference]: With dead ends: 109165 [2018-11-06 19:09:12,319 INFO L226 Difference]: Without dead ends: 54960 [2018-11-06 19:09:12,350 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 602 GetRequests, 586 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=76, Invalid=134, Unknown=0, NotChecked=0, Total=210 [2018-11-06 19:09:12,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54960 states. [2018-11-06 19:09:12,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54960 to 54207. [2018-11-06 19:09:12,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54207 states. [2018-11-06 19:09:12,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54207 states to 54207 states and 62757 transitions. [2018-11-06 19:09:12,993 INFO L78 Accepts]: Start accepts. Automaton has 54207 states and 62757 transitions. Word has length 589 [2018-11-06 19:09:12,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:09:12,994 INFO L480 AbstractCegarLoop]: Abstraction has 54207 states and 62757 transitions. [2018-11-06 19:09:12,994 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-06 19:09:12,994 INFO L276 IsEmpty]: Start isEmpty. Operand 54207 states and 62757 transitions. [2018-11-06 19:09:13,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 596 [2018-11-06 19:09:13,030 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:09:13,031 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:09:13,031 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:09:13,032 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:09:13,033 INFO L82 PathProgramCache]: Analyzing trace with hash -1803929979, now seen corresponding path program 1 times [2018-11-06 19:09:13,033 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:09:13,033 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:09:13,034 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:09:13,034 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:09:13,034 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:09:13,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:09:13,469 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 335 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-11-06 19:09:13,469 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:09:13,469 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 19:09:13,470 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:09:13,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:09:13,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:09:13,470 INFO L87 Difference]: Start difference. First operand 54207 states and 62757 transitions. Second operand 4 states. [2018-11-06 19:09:20,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:09:20,864 INFO L93 Difference]: Finished difference Result 108412 states and 125512 transitions. [2018-11-06 19:09:20,865 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:09:20,865 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 595 [2018-11-06 19:09:20,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:09:20,923 INFO L225 Difference]: With dead ends: 108412 [2018-11-06 19:09:20,923 INFO L226 Difference]: Without dead ends: 54207 [2018-11-06 19:09:20,951 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:09:20,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54207 states. [2018-11-06 19:09:21,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54207 to 54207. [2018-11-06 19:09:21,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54207 states. [2018-11-06 19:09:21,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54207 states to 54207 states and 61720 transitions. [2018-11-06 19:09:21,421 INFO L78 Accepts]: Start accepts. Automaton has 54207 states and 61720 transitions. Word has length 595 [2018-11-06 19:09:21,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:09:21,421 INFO L480 AbstractCegarLoop]: Abstraction has 54207 states and 61720 transitions. [2018-11-06 19:09:21,421 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:09:21,421 INFO L276 IsEmpty]: Start isEmpty. Operand 54207 states and 61720 transitions. [2018-11-06 19:09:21,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 600 [2018-11-06 19:09:21,446 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:09:21,447 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:09:21,447 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:09:21,447 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:09:21,448 INFO L82 PathProgramCache]: Analyzing trace with hash -1216200945, now seen corresponding path program 1 times [2018-11-06 19:09:21,448 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:09:21,448 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:09:21,449 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:09:21,449 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:09:21,449 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:09:21,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:09:22,342 WARN L179 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 12 [2018-11-06 19:09:22,981 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 342 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 19:09:22,981 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 19:09:22,981 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 19:09:22,989 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:09:23,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:09:23,140 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 19:09:24,344 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 266 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2018-11-06 19:09:24,376 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 19:09:24,377 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2018-11-06 19:09:24,380 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-06 19:09:24,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-06 19:09:24,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-06 19:09:24,384 INFO L87 Difference]: Start difference. First operand 54207 states and 61720 transitions. Second operand 6 states. [2018-11-06 19:09:40,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:09:40,306 INFO L93 Difference]: Finished difference Result 148267 states and 171206 transitions. [2018-11-06 19:09:40,307 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-06 19:09:40,307 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 599 [2018-11-06 19:09:40,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:09:40,423 INFO L225 Difference]: With dead ends: 148267 [2018-11-06 19:09:40,423 INFO L226 Difference]: Without dead ends: 93308 [2018-11-06 19:09:40,457 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 610 GetRequests, 602 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2018-11-06 19:09:40,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93308 states. [2018-11-06 19:09:41,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93308 to 93308. [2018-11-06 19:09:41,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93308 states. [2018-11-06 19:09:41,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93308 states to 93308 states and 102293 transitions. [2018-11-06 19:09:41,540 INFO L78 Accepts]: Start accepts. Automaton has 93308 states and 102293 transitions. Word has length 599 [2018-11-06 19:09:41,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:09:41,542 INFO L480 AbstractCegarLoop]: Abstraction has 93308 states and 102293 transitions. [2018-11-06 19:09:41,542 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-06 19:09:41,542 INFO L276 IsEmpty]: Start isEmpty. Operand 93308 states and 102293 transitions. [2018-11-06 19:09:41,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 610 [2018-11-06 19:09:41,575 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:09:41,576 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:09:41,576 INFO L423 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:09:41,576 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:09:41,577 INFO L82 PathProgramCache]: Analyzing trace with hash -568979800, now seen corresponding path program 1 times [2018-11-06 19:09:41,579 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:09:41,579 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:09:41,580 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:09:41,580 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:09:41,580 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:09:41,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:09:42,249 WARN L179 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 13 DAG size of output: 8 [2018-11-06 19:09:42,554 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 276 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2018-11-06 19:09:42,554 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:09:42,554 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 19:09:42,555 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:09:42,555 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:09:42,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:09:42,556 INFO L87 Difference]: Start difference. First operand 93308 states and 102293 transitions. Second operand 4 states. [2018-11-06 19:09:48,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:09:48,314 INFO L93 Difference]: Finished difference Result 222710 states and 243268 transitions. [2018-11-06 19:09:48,314 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-06 19:09:48,314 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 609 [2018-11-06 19:09:48,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:09:48,477 INFO L225 Difference]: With dead ends: 222710 [2018-11-06 19:09:48,477 INFO L226 Difference]: Without dead ends: 121873 [2018-11-06 19:09:48,529 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:09:48,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121873 states. [2018-11-06 19:09:49,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121873 to 120369. [2018-11-06 19:09:49,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120369 states. [2018-11-06 19:09:49,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120369 states to 120369 states and 129999 transitions. [2018-11-06 19:09:49,590 INFO L78 Accepts]: Start accepts. Automaton has 120369 states and 129999 transitions. Word has length 609 [2018-11-06 19:09:49,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:09:49,591 INFO L480 AbstractCegarLoop]: Abstraction has 120369 states and 129999 transitions. [2018-11-06 19:09:49,591 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:09:49,591 INFO L276 IsEmpty]: Start isEmpty. Operand 120369 states and 129999 transitions. [2018-11-06 19:09:49,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 628 [2018-11-06 19:09:49,616 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:09:49,617 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:09:49,617 INFO L423 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:09:49,617 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:09:49,618 INFO L82 PathProgramCache]: Analyzing trace with hash -1069367211, now seen corresponding path program 1 times [2018-11-06 19:09:49,618 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:09:49,618 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:09:49,619 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:09:49,619 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:09:49,619 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:09:49,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:09:51,540 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 341 proven. 52 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2018-11-06 19:09:51,540 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 19:09:51,541 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 19:09:51,549 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:09:51,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:09:51,693 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 19:09:52,428 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 297 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 19:09:52,449 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-06 19:09:52,449 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 11 [2018-11-06 19:09:52,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-06 19:09:52,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-06 19:09:52,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2018-11-06 19:09:52,451 INFO L87 Difference]: Start difference. First operand 120369 states and 129999 transitions. Second operand 12 states. [2018-11-06 19:10:16,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:10:16,970 INFO L93 Difference]: Finished difference Result 267176 states and 287827 transitions. [2018-11-06 19:10:16,971 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-06 19:10:16,971 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 627 [2018-11-06 19:10:16,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:10:17,127 INFO L225 Difference]: With dead ends: 267176 [2018-11-06 19:10:17,127 INFO L226 Difference]: Without dead ends: 132499 [2018-11-06 19:10:17,181 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 645 GetRequests, 624 SyntacticMatches, 6 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=94, Invalid=178, Unknown=0, NotChecked=0, Total=272 [2018-11-06 19:10:17,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132499 states. [2018-11-06 19:10:18,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132499 to 121851. [2018-11-06 19:10:18,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121851 states. [2018-11-06 19:10:18,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121851 states to 121851 states and 129004 transitions. [2018-11-06 19:10:18,267 INFO L78 Accepts]: Start accepts. Automaton has 121851 states and 129004 transitions. Word has length 627 [2018-11-06 19:10:18,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:10:18,267 INFO L480 AbstractCegarLoop]: Abstraction has 121851 states and 129004 transitions. [2018-11-06 19:10:18,267 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-06 19:10:18,268 INFO L276 IsEmpty]: Start isEmpty. Operand 121851 states and 129004 transitions. [2018-11-06 19:10:18,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 632 [2018-11-06 19:10:18,291 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:10:18,292 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-06 19:10:18,292 INFO L423 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:10:18,292 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:10:18,292 INFO L82 PathProgramCache]: Analyzing trace with hash -428591265, now seen corresponding path program 1 times [2018-11-06 19:10:18,292 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:10:18,293 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:10:18,293 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:10:18,294 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:10:18,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:10:18,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:10:18,900 WARN L179 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 8 [2018-11-06 19:10:19,901 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 298 proven. 0 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2018-11-06 19:10:19,901 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:10:19,902 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-06 19:10:19,902 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-06 19:10:19,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-06 19:10:19,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:10:19,903 INFO L87 Difference]: Start difference. First operand 121851 states and 129004 transitions. Second operand 4 states. [2018-11-06 19:10:25,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:10:25,788 INFO L93 Difference]: Finished difference Result 248964 states and 263369 transitions. [2018-11-06 19:10:25,788 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-06 19:10:25,789 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 631 [2018-11-06 19:10:25,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:10:25,928 INFO L225 Difference]: With dead ends: 248964 [2018-11-06 19:10:25,928 INFO L226 Difference]: Without dead ends: 125608 [2018-11-06 19:10:25,990 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-06 19:10:26,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125608 states. [2018-11-06 19:10:27,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125608 to 119592. [2018-11-06 19:10:27,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119592 states. [2018-11-06 19:10:27,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119592 states to 119592 states and 125505 transitions. [2018-11-06 19:10:27,635 INFO L78 Accepts]: Start accepts. Automaton has 119592 states and 125505 transitions. Word has length 631 [2018-11-06 19:10:27,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:10:27,635 INFO L480 AbstractCegarLoop]: Abstraction has 119592 states and 125505 transitions. [2018-11-06 19:10:27,635 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-06 19:10:27,635 INFO L276 IsEmpty]: Start isEmpty. Operand 119592 states and 125505 transitions. [2018-11-06 19:10:27,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 647 [2018-11-06 19:10:27,651 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:10:27,652 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-06 19:10:27,652 INFO L423 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:10:27,653 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:10:27,653 INFO L82 PathProgramCache]: Analyzing trace with hash -761895096, now seen corresponding path program 1 times [2018-11-06 19:10:27,653 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:10:27,653 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:10:27,654 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:10:27,654 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:10:27,654 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:10:27,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:10:28,942 INFO L134 CoverageAnalysis]: Checked inductivity of 449 backedges. 313 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2018-11-06 19:10:28,942 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-06 19:10:28,942 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-06 19:10:28,943 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-06 19:10:28,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-06 19:10:28,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-06 19:10:28,944 INFO L87 Difference]: Start difference. First operand 119592 states and 125505 transitions. Second operand 6 states. [2018-11-06 19:10:38,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-06 19:10:38,395 INFO L93 Difference]: Finished difference Result 247454 states and 259622 transitions. [2018-11-06 19:10:38,395 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-06 19:10:38,395 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 646 [2018-11-06 19:10:38,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-06 19:10:38,547 INFO L225 Difference]: With dead ends: 247454 [2018-11-06 19:10:38,547 INFO L226 Difference]: Without dead ends: 127109 [2018-11-06 19:10:38,623 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2018-11-06 19:10:38,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127109 states. [2018-11-06 19:10:40,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127109 to 121845. [2018-11-06 19:10:40,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121845 states. [2018-11-06 19:10:40,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121845 states to 121845 states and 126544 transitions. [2018-11-06 19:10:40,325 INFO L78 Accepts]: Start accepts. Automaton has 121845 states and 126544 transitions. Word has length 646 [2018-11-06 19:10:40,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-06 19:10:40,326 INFO L480 AbstractCegarLoop]: Abstraction has 121845 states and 126544 transitions. [2018-11-06 19:10:40,326 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-06 19:10:40,326 INFO L276 IsEmpty]: Start isEmpty. Operand 121845 states and 126544 transitions. [2018-11-06 19:10:40,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 730 [2018-11-06 19:10:40,350 INFO L367 BasicCegarLoop]: Found error trace [2018-11-06 19:10:40,350 INFO L375 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2018-11-06 19:10:40,351 INFO L423 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-06 19:10:40,351 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-06 19:10:40,351 INFO L82 PathProgramCache]: Analyzing trace with hash 200800177, now seen corresponding path program 1 times [2018-11-06 19:10:40,351 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-06 19:10:40,351 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-06 19:10:40,352 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:10:40,352 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:10:40,352 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-06 19:10:40,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:10:41,398 INFO L134 CoverageAnalysis]: Checked inductivity of 720 backedges. 595 proven. 12 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2018-11-06 19:10:41,399 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-06 19:10:41,399 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-06 19:10:41,408 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-06 19:10:41,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-06 19:10:41,586 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-06 19:10:42,617 INFO L134 CoverageAnalysis]: Checked inductivity of 720 backedges. 720 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-06 19:10:42,637 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-06 19:10:42,637 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 9 [2018-11-06 19:10:42,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-06 19:10:42,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-06 19:10:42,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2018-11-06 19:10:42,638 INFO L87 Difference]: Start difference. First operand 121845 states and 126544 transitions. Second operand 9 states. Received shutdown request... [2018-11-06 19:10:50,186 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-06 19:10:50,186 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-06 19:10:50,193 WARN L205 ceAbstractionStarter]: Timeout [2018-11-06 19:10:50,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 07:10:50 BoogieIcfgContainer [2018-11-06 19:10:50,194 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-06 19:10:50,195 INFO L168 Benchmark]: Toolchain (without parser) took 224183.37 ms. Allocated memory was 1.5 GB in the beginning and 3.4 GB in the end (delta: 1.9 GB). Free memory was 1.4 GB in the beginning and 2.8 GB in the end (delta: -1.4 GB). Peak memory consumption was 458.6 MB. Max. memory is 7.1 GB. [2018-11-06 19:10:50,196 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-06 19:10:50,196 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2177.65 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. [2018-11-06 19:10:50,197 INFO L168 Benchmark]: Boogie Procedure Inliner took 738.65 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 813.2 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -995.3 MB). Peak memory consumption was 54.5 MB. Max. memory is 7.1 GB. [2018-11-06 19:10:50,198 INFO L168 Benchmark]: Boogie Preprocessor took 376.97 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: 43.6 MB). Peak memory consumption was 43.6 MB. Max. memory is 7.1 GB. [2018-11-06 19:10:50,199 INFO L168 Benchmark]: RCFGBuilder took 9587.70 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 223.9 MB). Free memory was 2.2 GB in the beginning and 2.3 GB in the end (delta: -193.2 MB). Peak memory consumption was 632.7 MB. Max. memory is 7.1 GB. [2018-11-06 19:10:50,200 INFO L168 Benchmark]: TraceAbstraction took 211297.65 ms. Allocated memory was 2.6 GB in the beginning and 3.4 GB in the end (delta: 854.6 MB). Free memory was 2.3 GB in the beginning and 2.8 GB in the end (delta: -489.0 MB). Peak memory consumption was 365.6 MB. Max. memory is 7.1 GB. [2018-11-06 19:10:50,208 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2177.65 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 200.8 MB). Peak memory consumption was 200.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 738.65 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 813.2 MB). Free memory was 1.2 GB in the beginning and 2.2 GB in the end (delta: -995.3 MB). Peak memory consumption was 54.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 376.97 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: 43.6 MB). Peak memory consumption was 43.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9587.70 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 223.9 MB). Free memory was 2.2 GB in the beginning and 2.3 GB in the end (delta: -193.2 MB). Peak memory consumption was 632.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 211297.65 ms. Allocated memory was 2.6 GB in the beginning and 3.4 GB in the end (delta: 854.6 MB). Free memory was 2.3 GB in the beginning and 2.8 GB in the end (delta: -489.0 MB). Peak memory consumption was 365.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 51]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 51). Cancelled while BasicCegarLoop was constructing difference of abstraction (121845states) and FLOYD_HOARE automaton (currently 14 states, 9 states before enhancement),while ReachableStatesComputation was computing reachable states (60030 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 819 locations, 1 error locations. TIMEOUT Result, 211.2s OverallTime, 15 OverallIterations, 5 TraceHistogramMax, 178.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 9088 SDtfs, 64464 SDslu, 1923 SDs, 0 SdLazy, 108446 SolverSat, 19989 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 141.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3264 GetRequests, 3151 SyntacticMatches, 31 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 7.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=121851occurred 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: 11.5s AutomataMinimizationTime, 14 MinimizatonAttempts, 64903 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 13.5s InterpolantComputationTime, 9347 NumberOfCodeBlocks, 9347 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 9326 ConstructedInterpolants, 0 QuantifiedInterpolants, 28875649 SizeOfPredicates, 19 NumberOfNonLiveVariables, 3793 ConjunctsInSsa, 50 ConjunctsInUnsatCore, 21 InterpolantComputations, 12 PerfectInterpolantSequences, 5274/5595 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown