java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-08 11:45:29,005 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-08 11:45:29,007 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-08 11:45:29,019 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-08 11:45:29,019 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-08 11:45:29,021 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-08 11:45:29,022 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-08 11:45:29,024 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-08 11:45:29,026 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-08 11:45:29,026 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-08 11:45:29,027 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-08 11:45:29,029 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-08 11:45:29,029 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-08 11:45:29,030 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-08 11:45:29,031 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-08 11:45:29,032 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-08 11:45:29,033 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-08 11:45:29,034 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-08 11:45:29,036 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-08 11:45:29,038 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-08 11:45:29,040 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-08 11:45:29,041 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-08 11:45:29,042 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-08 11:45:29,043 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-08 11:45:29,045 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-08 11:45:29,048 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-08 11:45:29,049 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-08 11:45:29,050 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-08 11:45:29,051 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-08 11:45:29,052 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-08 11:45:29,052 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-08 11:45:29,053 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-08 11:45:29,053 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-08 11:45:29,053 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-08 11:45:29,054 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-08 11:45:29,055 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-08 11:45:29,055 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-09-08 11:45:29,070 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-08 11:45:29,070 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-08 11:45:29,071 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-08 11:45:29,072 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-08 11:45:29,072 INFO L138 SettingsManager]: * Use SBE=true [2019-09-08 11:45:29,072 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-08 11:45:29,072 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-08 11:45:29,073 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-08 11:45:29,073 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-08 11:45:29,073 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-08 11:45:29,073 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-08 11:45:29,073 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-08 11:45:29,074 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-08 11:45:29,074 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-08 11:45:29,074 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-08 11:45:29,074 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-08 11:45:29,074 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-08 11:45:29,074 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-08 11:45:29,075 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-08 11:45:29,075 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-08 11:45:29,075 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-08 11:45:29,075 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-08 11:45:29,075 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-08 11:45:29,076 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-08 11:45:29,076 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-08 11:45:29,076 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-08 11:45:29,076 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-08 11:45:29,077 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-08 11:45:29,077 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-08 11:45:29,105 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-08 11:45:29,118 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-08 11:45:29,121 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-08 11:45:29,123 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-08 11:45:29,123 INFO L275 PluginConnector]: CDTParser initialized [2019-09-08 11:45:29,124 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2019-09-08 11:45:29,199 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c801ffd99/beaf00a86e5d409f9797332f623365ba/FLAG81de1ef1d [2019-09-08 11:45:29,672 INFO L306 CDTParser]: Found 1 translation units. [2019-09-08 11:45:29,672 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2019-09-08 11:45:29,687 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c801ffd99/beaf00a86e5d409f9797332f623365ba/FLAG81de1ef1d [2019-09-08 11:45:30,061 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c801ffd99/beaf00a86e5d409f9797332f623365ba [2019-09-08 11:45:30,071 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-08 11:45:30,072 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-08 11:45:30,073 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-08 11:45:30,073 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-08 11:45:30,076 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-08 11:45:30,077 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 11:45:30" (1/1) ... [2019-09-08 11:45:30,080 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@200f2ca2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 11:45:30, skipping insertion in model container [2019-09-08 11:45:30,080 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 11:45:30" (1/1) ... [2019-09-08 11:45:30,087 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-08 11:45:30,131 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-08 11:45:30,384 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 11:45:30,398 INFO L188 MainTranslator]: Completed pre-run [2019-09-08 11:45:30,534 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 11:45:30,560 INFO L192 MainTranslator]: Completed translation [2019-09-08 11:45:30,560 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 11:45:30 WrapperNode [2019-09-08 11:45:30,560 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-08 11:45:30,561 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-08 11:45:30,561 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-08 11:45:30,561 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-08 11:45:30,571 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 11:45:30" (1/1) ... [2019-09-08 11:45:30,571 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 11:45:30" (1/1) ... [2019-09-08 11:45:30,579 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 11:45:30" (1/1) ... [2019-09-08 11:45:30,579 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 11:45:30" (1/1) ... [2019-09-08 11:45:30,590 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 11:45:30" (1/1) ... [2019-09-08 11:45:30,597 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 11:45:30" (1/1) ... [2019-09-08 11:45:30,600 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 11:45:30" (1/1) ... [2019-09-08 11:45:30,603 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-08 11:45:30,604 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-08 11:45:30,604 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-08 11:45:30,604 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-08 11:45:30,605 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 11:45:30" (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 [2019-09-08 11:45:30,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-08 11:45:30,665 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-08 11:45:30,665 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-08 11:45:30,665 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-08 11:45:30,665 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-09-08 11:45:30,665 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-09-08 11:45:30,666 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2019-09-08 11:45:30,666 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2019-09-08 11:45:30,666 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-08 11:45:30,666 INFO L130 BoogieDeclarations]: Found specification of procedure read [2019-09-08 11:45:30,666 INFO L130 BoogieDeclarations]: Found specification of procedure write [2019-09-08 11:45:30,666 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2019-09-08 11:45:30,669 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2019-09-08 11:45:30,669 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2019-09-08 11:45:30,670 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2019-09-08 11:45:30,670 INFO L130 BoogieDeclarations]: Found specification of procedure init [2019-09-08 11:45:30,670 INFO L130 BoogieDeclarations]: Found specification of procedure check [2019-09-08 11:45:30,670 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-08 11:45:30,670 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-08 11:45:30,670 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-08 11:45:31,236 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-08 11:45:31,237 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-09-08 11:45:31,238 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 11:45:31 BoogieIcfgContainer [2019-09-08 11:45:31,238 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-08 11:45:31,239 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-08 11:45:31,239 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-08 11:45:31,242 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-08 11:45:31,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.09 11:45:30" (1/3) ... [2019-09-08 11:45:31,243 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65b460d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 11:45:31, skipping insertion in model container [2019-09-08 11:45:31,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 11:45:30" (2/3) ... [2019-09-08 11:45:31,244 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65b460d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 11:45:31, skipping insertion in model container [2019-09-08 11:45:31,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 11:45:31" (3/3) ... [2019-09-08 11:45:31,246 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2019-09-08 11:45:31,255 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-08 11:45:31,263 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-08 11:45:31,279 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-08 11:45:31,310 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-08 11:45:31,311 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-08 11:45:31,311 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-08 11:45:31,311 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-08 11:45:31,312 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-08 11:45:31,312 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-08 11:45:31,312 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-08 11:45:31,313 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-08 11:45:31,313 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-08 11:45:31,333 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states. [2019-09-08 11:45:31,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-09-08 11:45:31,342 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:45:31,343 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 11:45:31,345 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:45:31,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:45:31,350 INFO L82 PathProgramCache]: Analyzing trace with hash -1010910297, now seen corresponding path program 1 times [2019-09-08 11:45:31,351 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:45:31,352 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:45:31,403 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:45:31,403 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:45:31,403 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:45:31,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:45:31,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 11:45:31,761 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 11:45:31,761 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-08 11:45:31,766 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-08 11:45:31,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-08 11:45:31,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 11:45:31,782 INFO L87 Difference]: Start difference. First operand 86 states. Second operand 3 states. [2019-09-08 11:45:31,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:45:31,852 INFO L93 Difference]: Finished difference Result 190 states and 299 transitions. [2019-09-08 11:45:31,852 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-08 11:45:31,854 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2019-09-08 11:45:31,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:45:31,867 INFO L225 Difference]: With dead ends: 190 [2019-09-08 11:45:31,867 INFO L226 Difference]: Without dead ends: 126 [2019-09-08 11:45:31,871 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 11:45:31,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2019-09-08 11:45:31,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 124. [2019-09-08 11:45:31,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2019-09-08 11:45:31,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 179 transitions. [2019-09-08 11:45:31,921 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 179 transitions. Word has length 52 [2019-09-08 11:45:31,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:45:31,922 INFO L475 AbstractCegarLoop]: Abstraction has 124 states and 179 transitions. [2019-09-08 11:45:31,922 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-08 11:45:31,922 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 179 transitions. [2019-09-08 11:45:31,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-09-08 11:45:31,924 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:45:31,924 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 11:45:31,925 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:45:31,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:45:31,925 INFO L82 PathProgramCache]: Analyzing trace with hash 642580825, now seen corresponding path program 1 times [2019-09-08 11:45:31,926 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:45:31,926 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:45:31,928 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:45:31,928 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:45:31,928 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:45:31,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:45:32,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 11:45:32,041 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 11:45:32,041 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-08 11:45:32,043 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-08 11:45:32,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-08 11:45:32,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 11:45:32,044 INFO L87 Difference]: Start difference. First operand 124 states and 179 transitions. Second operand 3 states. [2019-09-08 11:45:32,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:45:32,090 INFO L93 Difference]: Finished difference Result 296 states and 451 transitions. [2019-09-08 11:45:32,092 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-08 11:45:32,092 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2019-09-08 11:45:32,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:45:32,096 INFO L225 Difference]: With dead ends: 296 [2019-09-08 11:45:32,096 INFO L226 Difference]: Without dead ends: 202 [2019-09-08 11:45:32,099 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 11:45:32,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2019-09-08 11:45:32,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 200. [2019-09-08 11:45:32,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2019-09-08 11:45:32,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 299 transitions. [2019-09-08 11:45:32,131 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 299 transitions. Word has length 53 [2019-09-08 11:45:32,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:45:32,132 INFO L475 AbstractCegarLoop]: Abstraction has 200 states and 299 transitions. [2019-09-08 11:45:32,132 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-08 11:45:32,132 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 299 transitions. [2019-09-08 11:45:32,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2019-09-08 11:45:32,134 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:45:32,134 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 11:45:32,135 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:45:32,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:45:32,135 INFO L82 PathProgramCache]: Analyzing trace with hash 228050420, now seen corresponding path program 1 times [2019-09-08 11:45:32,135 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:45:32,135 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:45:32,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:45:32,138 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:45:32,138 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:45:32,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:45:32,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 11:45:32,246 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 11:45:32,246 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-08 11:45:32,247 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-08 11:45:32,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-08 11:45:32,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 11:45:32,247 INFO L87 Difference]: Start difference. First operand 200 states and 299 transitions. Second operand 3 states. [2019-09-08 11:45:32,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:45:32,303 INFO L93 Difference]: Finished difference Result 508 states and 785 transitions. [2019-09-08 11:45:32,305 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-08 11:45:32,306 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 54 [2019-09-08 11:45:32,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:45:32,312 INFO L225 Difference]: With dead ends: 508 [2019-09-08 11:45:32,312 INFO L226 Difference]: Without dead ends: 338 [2019-09-08 11:45:32,314 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 11:45:32,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2019-09-08 11:45:32,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 336. [2019-09-08 11:45:32,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 336 states. [2019-09-08 11:45:32,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 511 transitions. [2019-09-08 11:45:32,367 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 511 transitions. Word has length 54 [2019-09-08 11:45:32,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:45:32,368 INFO L475 AbstractCegarLoop]: Abstraction has 336 states and 511 transitions. [2019-09-08 11:45:32,368 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-08 11:45:32,372 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 511 transitions. [2019-09-08 11:45:32,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2019-09-08 11:45:32,374 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:45:32,374 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 11:45:32,374 INFO L418 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:45:32,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:45:32,375 INFO L82 PathProgramCache]: Analyzing trace with hash -742349385, now seen corresponding path program 1 times [2019-09-08 11:45:32,375 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:45:32,375 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:45:32,379 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:45:32,380 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:45:32,380 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:45:32,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:45:32,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 11:45:32,514 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 11:45:32,514 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 11:45:32,514 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 11:45:32,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 11:45:32,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-08 11:45:32,515 INFO L87 Difference]: Start difference. First operand 336 states and 511 transitions. Second operand 5 states. [2019-09-08 11:45:32,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:45:32,656 INFO L93 Difference]: Finished difference Result 642 states and 992 transitions. [2019-09-08 11:45:32,656 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 11:45:32,656 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 55 [2019-09-08 11:45:32,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:45:32,659 INFO L225 Difference]: With dead ends: 642 [2019-09-08 11:45:32,660 INFO L226 Difference]: Without dead ends: 336 [2019-09-08 11:45:32,662 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-09-08 11:45:32,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2019-09-08 11:45:32,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 336. [2019-09-08 11:45:32,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 336 states. [2019-09-08 11:45:32,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 507 transitions. [2019-09-08 11:45:32,688 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 507 transitions. Word has length 55 [2019-09-08 11:45:32,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:45:32,688 INFO L475 AbstractCegarLoop]: Abstraction has 336 states and 507 transitions. [2019-09-08 11:45:32,688 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 11:45:32,689 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 507 transitions. [2019-09-08 11:45:32,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2019-09-08 11:45:32,690 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:45:32,690 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 11:45:32,691 INFO L418 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:45:32,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:45:32,691 INFO L82 PathProgramCache]: Analyzing trace with hash 1710587378, now seen corresponding path program 1 times [2019-09-08 11:45:32,691 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:45:32,692 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:45:32,693 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:45:32,693 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:45:32,693 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:45:32,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:45:32,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 11:45:32,792 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 11:45:32,792 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 11:45:32,792 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 11:45:32,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 11:45:32,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-08 11:45:32,793 INFO L87 Difference]: Start difference. First operand 336 states and 507 transitions. Second operand 5 states. [2019-09-08 11:45:32,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:45:32,946 INFO L93 Difference]: Finished difference Result 642 states and 984 transitions. [2019-09-08 11:45:32,947 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 11:45:32,947 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 55 [2019-09-08 11:45:32,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:45:32,954 INFO L225 Difference]: With dead ends: 642 [2019-09-08 11:45:32,954 INFO L226 Difference]: Without dead ends: 336 [2019-09-08 11:45:32,955 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-09-08 11:45:32,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2019-09-08 11:45:32,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 336. [2019-09-08 11:45:32,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 336 states. [2019-09-08 11:45:32,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 503 transitions. [2019-09-08 11:45:32,997 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 503 transitions. Word has length 55 [2019-09-08 11:45:32,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:45:32,997 INFO L475 AbstractCegarLoop]: Abstraction has 336 states and 503 transitions. [2019-09-08 11:45:32,998 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 11:45:32,998 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 503 transitions. [2019-09-08 11:45:33,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2019-09-08 11:45:33,005 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:45:33,006 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 11:45:33,006 INFO L418 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:45:33,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:45:33,007 INFO L82 PathProgramCache]: Analyzing trace with hash 263557783, now seen corresponding path program 1 times [2019-09-08 11:45:33,007 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:45:33,007 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:45:33,011 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:45:33,011 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:45:33,012 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:45:33,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:45:33,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 11:45:33,198 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 11:45:33,198 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-08 11:45:33,198 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-08 11:45:33,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-08 11:45:33,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-08 11:45:33,199 INFO L87 Difference]: Start difference. First operand 336 states and 503 transitions. Second operand 6 states. [2019-09-08 11:45:33,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:45:33,476 INFO L93 Difference]: Finished difference Result 1866 states and 2868 transitions. [2019-09-08 11:45:33,476 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-08 11:45:33,477 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 55 [2019-09-08 11:45:33,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:45:33,486 INFO L225 Difference]: With dead ends: 1866 [2019-09-08 11:45:33,486 INFO L226 Difference]: Without dead ends: 1560 [2019-09-08 11:45:33,487 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2019-09-08 11:45:33,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1560 states. [2019-09-08 11:45:33,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1560 to 640. [2019-09-08 11:45:33,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 640 states. [2019-09-08 11:45:33,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 959 transitions. [2019-09-08 11:45:33,556 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 959 transitions. Word has length 55 [2019-09-08 11:45:33,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:45:33,557 INFO L475 AbstractCegarLoop]: Abstraction has 640 states and 959 transitions. [2019-09-08 11:45:33,557 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-08 11:45:33,557 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 959 transitions. [2019-09-08 11:45:33,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-09-08 11:45:33,558 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:45:33,558 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 11:45:33,559 INFO L418 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:45:33,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:45:33,559 INFO L82 PathProgramCache]: Analyzing trace with hash -1017233934, now seen corresponding path program 1 times [2019-09-08 11:45:33,559 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:45:33,559 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:45:33,561 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:45:33,561 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:45:33,561 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:45:33,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:45:33,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 11:45:33,643 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 11:45:33,643 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-08 11:45:33,644 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-08 11:45:33,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-08 11:45:33,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 11:45:33,645 INFO L87 Difference]: Start difference. First operand 640 states and 959 transitions. Second operand 3 states. [2019-09-08 11:45:33,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:45:33,775 INFO L93 Difference]: Finished difference Result 1780 states and 2681 transitions. [2019-09-08 11:45:33,775 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-08 11:45:33,777 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 57 [2019-09-08 11:45:33,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:45:33,784 INFO L225 Difference]: With dead ends: 1780 [2019-09-08 11:45:33,784 INFO L226 Difference]: Without dead ends: 1170 [2019-09-08 11:45:33,787 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 11:45:33,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1170 states. [2019-09-08 11:45:33,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1170 to 1152. [2019-09-08 11:45:33,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1152 states. [2019-09-08 11:45:33,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1152 states to 1152 states and 1687 transitions. [2019-09-08 11:45:33,918 INFO L78 Accepts]: Start accepts. Automaton has 1152 states and 1687 transitions. Word has length 57 [2019-09-08 11:45:33,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:45:33,918 INFO L475 AbstractCegarLoop]: Abstraction has 1152 states and 1687 transitions. [2019-09-08 11:45:33,918 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-08 11:45:33,918 INFO L276 IsEmpty]: Start isEmpty. Operand 1152 states and 1687 transitions. [2019-09-08 11:45:33,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-09-08 11:45:33,919 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:45:33,919 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 11:45:33,920 INFO L418 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:45:33,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:45:33,920 INFO L82 PathProgramCache]: Analyzing trace with hash -997184591, now seen corresponding path program 1 times [2019-09-08 11:45:33,922 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:45:33,922 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:45:33,924 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:45:33,924 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:45:33,924 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:45:33,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:45:34,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 11:45:34,160 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 11:45:34,160 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-08 11:45:34,161 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-08 11:45:34,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-08 11:45:34,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-09-08 11:45:34,162 INFO L87 Difference]: Start difference. First operand 1152 states and 1687 transitions. Second operand 6 states. [2019-09-08 11:45:34,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:45:34,503 INFO L93 Difference]: Finished difference Result 3392 states and 5019 transitions. [2019-09-08 11:45:34,503 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-08 11:45:34,504 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 57 [2019-09-08 11:45:34,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:45:34,515 INFO L225 Difference]: With dead ends: 3392 [2019-09-08 11:45:34,515 INFO L226 Difference]: Without dead ends: 2270 [2019-09-08 11:45:34,518 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-09-08 11:45:34,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2270 states. [2019-09-08 11:45:34,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2270 to 1152. [2019-09-08 11:45:34,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1152 states. [2019-09-08 11:45:34,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1152 states to 1152 states and 1671 transitions. [2019-09-08 11:45:34,667 INFO L78 Accepts]: Start accepts. Automaton has 1152 states and 1671 transitions. Word has length 57 [2019-09-08 11:45:34,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:45:34,667 INFO L475 AbstractCegarLoop]: Abstraction has 1152 states and 1671 transitions. [2019-09-08 11:45:34,667 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-08 11:45:34,667 INFO L276 IsEmpty]: Start isEmpty. Operand 1152 states and 1671 transitions. [2019-09-08 11:45:34,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2019-09-08 11:45:34,668 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:45:34,668 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 11:45:34,669 INFO L418 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:45:34,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:45:34,669 INFO L82 PathProgramCache]: Analyzing trace with hash 620001396, now seen corresponding path program 1 times [2019-09-08 11:45:34,669 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:45:34,669 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:45:34,671 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:45:34,671 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:45:34,671 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:45:34,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:45:34,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 11:45:34,718 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 11:45:34,718 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-08 11:45:34,718 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-08 11:45:34,719 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-08 11:45:34,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 11:45:34,719 INFO L87 Difference]: Start difference. First operand 1152 states and 1671 transitions. Second operand 3 states. [2019-09-08 11:45:34,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:45:34,870 INFO L93 Difference]: Finished difference Result 2215 states and 3261 transitions. [2019-09-08 11:45:34,871 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-08 11:45:34,871 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 58 [2019-09-08 11:45:34,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:45:34,880 INFO L225 Difference]: With dead ends: 2215 [2019-09-08 11:45:34,880 INFO L226 Difference]: Without dead ends: 1604 [2019-09-08 11:45:34,883 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 11:45:34,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2019-09-08 11:45:35,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1602. [2019-09-08 11:45:35,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1602 states. [2019-09-08 11:45:35,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1602 states to 1602 states and 2321 transitions. [2019-09-08 11:45:35,031 INFO L78 Accepts]: Start accepts. Automaton has 1602 states and 2321 transitions. Word has length 58 [2019-09-08 11:45:35,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:45:35,031 INFO L475 AbstractCegarLoop]: Abstraction has 1602 states and 2321 transitions. [2019-09-08 11:45:35,032 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-08 11:45:35,032 INFO L276 IsEmpty]: Start isEmpty. Operand 1602 states and 2321 transitions. [2019-09-08 11:45:35,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2019-09-08 11:45:35,032 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:45:35,032 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 11:45:35,033 INFO L418 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:45:35,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:45:35,033 INFO L82 PathProgramCache]: Analyzing trace with hash -849860640, now seen corresponding path program 1 times [2019-09-08 11:45:35,033 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:45:35,033 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:45:35,036 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:45:35,036 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:45:35,036 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:45:35,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:45:35,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 11:45:35,119 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 11:45:35,119 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 11:45:35,119 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 11:45:35,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 11:45:35,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-08 11:45:35,120 INFO L87 Difference]: Start difference. First operand 1602 states and 2321 transitions. Second operand 5 states. [2019-09-08 11:45:35,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:45:35,454 INFO L93 Difference]: Finished difference Result 3024 states and 4372 transitions. [2019-09-08 11:45:35,454 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-08 11:45:35,454 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 58 [2019-09-08 11:45:35,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:45:35,469 INFO L225 Difference]: With dead ends: 3024 [2019-09-08 11:45:35,469 INFO L226 Difference]: Without dead ends: 3022 [2019-09-08 11:45:35,471 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-08 11:45:35,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3022 states. [2019-09-08 11:45:35,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3022 to 1682. [2019-09-08 11:45:35,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1682 states. [2019-09-08 11:45:35,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1682 states to 1682 states and 2393 transitions. [2019-09-08 11:45:35,652 INFO L78 Accepts]: Start accepts. Automaton has 1682 states and 2393 transitions. Word has length 58 [2019-09-08 11:45:35,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:45:35,652 INFO L475 AbstractCegarLoop]: Abstraction has 1682 states and 2393 transitions. [2019-09-08 11:45:35,653 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 11:45:35,653 INFO L276 IsEmpty]: Start isEmpty. Operand 1682 states and 2393 transitions. [2019-09-08 11:45:35,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2019-09-08 11:45:35,654 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:45:35,655 INFO L399 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] [2019-09-08 11:45:35,655 INFO L418 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:45:35,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:45:35,655 INFO L82 PathProgramCache]: Analyzing trace with hash -911018282, now seen corresponding path program 1 times [2019-09-08 11:45:35,656 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:45:35,656 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:45:35,657 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:45:35,657 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:45:35,657 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:45:35,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:45:35,762 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-09-08 11:45:35,762 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 11:45:35,763 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-08 11:45:35,763 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-08 11:45:35,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-08 11:45:35,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-08 11:45:35,764 INFO L87 Difference]: Start difference. First operand 1682 states and 2393 transitions. Second operand 6 states. [2019-09-08 11:45:36,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:45:36,351 INFO L93 Difference]: Finished difference Result 4748 states and 6910 transitions. [2019-09-08 11:45:36,352 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-08 11:45:36,352 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 81 [2019-09-08 11:45:36,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:45:36,375 INFO L225 Difference]: With dead ends: 4748 [2019-09-08 11:45:36,375 INFO L226 Difference]: Without dead ends: 3914 [2019-09-08 11:45:36,379 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2019-09-08 11:45:36,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3914 states. [2019-09-08 11:45:36,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3914 to 2514. [2019-09-08 11:45:36,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2514 states. [2019-09-08 11:45:36,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2514 states to 2514 states and 3593 transitions. [2019-09-08 11:45:36,680 INFO L78 Accepts]: Start accepts. Automaton has 2514 states and 3593 transitions. Word has length 81 [2019-09-08 11:45:36,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:45:36,680 INFO L475 AbstractCegarLoop]: Abstraction has 2514 states and 3593 transitions. [2019-09-08 11:45:36,680 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-08 11:45:36,681 INFO L276 IsEmpty]: Start isEmpty. Operand 2514 states and 3593 transitions. [2019-09-08 11:45:36,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2019-09-08 11:45:36,704 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:45:36,704 INFO L399 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] [2019-09-08 11:45:36,705 INFO L418 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:45:36,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:45:36,705 INFO L82 PathProgramCache]: Analyzing trace with hash -934763504, now seen corresponding path program 1 times [2019-09-08 11:45:36,705 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:45:36,705 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:45:36,707 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:45:36,707 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:45:36,708 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:45:36,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:45:36,841 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-09-08 11:45:36,842 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 11:45:36,842 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-08 11:45:36,842 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-08 11:45:36,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-08 11:45:36,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-09-08 11:45:36,843 INFO L87 Difference]: Start difference. First operand 2514 states and 3593 transitions. Second operand 6 states. [2019-09-08 11:45:37,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:45:37,431 INFO L93 Difference]: Finished difference Result 5580 states and 8110 transitions. [2019-09-08 11:45:37,431 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-08 11:45:37,432 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 81 [2019-09-08 11:45:37,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:45:37,459 INFO L225 Difference]: With dead ends: 5580 [2019-09-08 11:45:37,460 INFO L226 Difference]: Without dead ends: 4746 [2019-09-08 11:45:37,464 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-09-08 11:45:37,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4746 states. [2019-09-08 11:45:37,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4746 to 3346. [2019-09-08 11:45:37,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3346 states. [2019-09-08 11:45:37,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3346 states to 3346 states and 4793 transitions. [2019-09-08 11:45:37,866 INFO L78 Accepts]: Start accepts. Automaton has 3346 states and 4793 transitions. Word has length 81 [2019-09-08 11:45:37,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:45:37,867 INFO L475 AbstractCegarLoop]: Abstraction has 3346 states and 4793 transitions. [2019-09-08 11:45:37,867 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-08 11:45:37,867 INFO L276 IsEmpty]: Start isEmpty. Operand 3346 states and 4793 transitions. [2019-09-08 11:45:37,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2019-09-08 11:45:37,869 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:45:37,869 INFO L399 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] [2019-09-08 11:45:37,869 INFO L418 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:45:37,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:45:37,870 INFO L82 PathProgramCache]: Analyzing trace with hash -1307289398, now seen corresponding path program 1 times [2019-09-08 11:45:37,870 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:45:37,870 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:45:37,872 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:45:37,872 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:45:37,872 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:45:37,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:45:37,963 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 11:45:37,964 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 11:45:37,964 INFO L223 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) [2019-09-08 11:45:37,984 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 11:45:38,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:45:38,085 INFO L256 TraceCheckSpWp]: Trace formula consists of 603 conjuncts, 5 conjunts are in the unsatisfiable core [2019-09-08 11:45:38,094 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 11:45:38,199 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-09-08 11:45:38,205 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-08 11:45:38,205 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2019-09-08 11:45:38,206 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-08 11:45:38,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-08 11:45:38,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2019-09-08 11:45:38,207 INFO L87 Difference]: Start difference. First operand 3346 states and 4793 transitions. Second operand 9 states. [2019-09-08 11:45:40,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:45:40,134 INFO L93 Difference]: Finished difference Result 14150 states and 20711 transitions. [2019-09-08 11:45:40,134 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-09-08 11:45:40,135 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 81 [2019-09-08 11:45:40,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:45:40,179 INFO L225 Difference]: With dead ends: 14150 [2019-09-08 11:45:40,180 INFO L226 Difference]: Without dead ends: 12196 [2019-09-08 11:45:40,187 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2019-09-08 11:45:40,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12196 states. [2019-09-08 11:45:41,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12196 to 7434. [2019-09-08 11:45:41,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7434 states. [2019-09-08 11:45:41,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7434 states to 7434 states and 10697 transitions. [2019-09-08 11:45:41,033 INFO L78 Accepts]: Start accepts. Automaton has 7434 states and 10697 transitions. Word has length 81 [2019-09-08 11:45:41,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:45:41,033 INFO L475 AbstractCegarLoop]: Abstraction has 7434 states and 10697 transitions. [2019-09-08 11:45:41,033 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-08 11:45:41,034 INFO L276 IsEmpty]: Start isEmpty. Operand 7434 states and 10697 transitions. [2019-09-08 11:45:41,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2019-09-08 11:45:41,036 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:45:41,036 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-08 11:45:41,036 INFO L418 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:45:41,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:45:41,037 INFO L82 PathProgramCache]: Analyzing trace with hash 1399365996, now seen corresponding path program 1 times [2019-09-08 11:45:41,037 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:45:41,037 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:45:41,039 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:45:41,039 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:45:41,039 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:45:41,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:45:41,120 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 11:45:41,120 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 11:45:41,120 INFO L223 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) [2019-09-08 11:45:41,135 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 11:45:41,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:45:41,256 INFO L256 TraceCheckSpWp]: Trace formula consists of 604 conjuncts, 5 conjunts are in the unsatisfiable core [2019-09-08 11:45:41,271 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 11:45:41,344 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-09-08 11:45:41,358 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-08 11:45:41,358 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2019-09-08 11:45:41,359 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-08 11:45:41,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-08 11:45:41,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-09-08 11:45:41,360 INFO L87 Difference]: Start difference. First operand 7434 states and 10697 transitions. Second operand 9 states. [2019-09-08 11:45:42,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:45:42,966 INFO L93 Difference]: Finished difference Result 16352 states and 23828 transitions. [2019-09-08 11:45:42,967 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-09-08 11:45:42,967 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 82 [2019-09-08 11:45:42,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:45:43,007 INFO L225 Difference]: With dead ends: 16352 [2019-09-08 11:45:43,008 INFO L226 Difference]: Without dead ends: 14110 [2019-09-08 11:45:43,020 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=123, Invalid=219, Unknown=0, NotChecked=0, Total=342 [2019-09-08 11:45:43,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14110 states. [2019-09-08 11:45:43,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14110 to 10170. [2019-09-08 11:45:43,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10170 states. [2019-09-08 11:45:44,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10170 states to 10170 states and 14721 transitions. [2019-09-08 11:45:44,004 INFO L78 Accepts]: Start accepts. Automaton has 10170 states and 14721 transitions. Word has length 82 [2019-09-08 11:45:44,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:45:44,005 INFO L475 AbstractCegarLoop]: Abstraction has 10170 states and 14721 transitions. [2019-09-08 11:45:44,005 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-08 11:45:44,005 INFO L276 IsEmpty]: Start isEmpty. Operand 10170 states and 14721 transitions. [2019-09-08 11:45:44,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2019-09-08 11:45:44,008 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:45:44,008 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-08 11:45:44,008 INFO L418 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:45:44,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:45:44,009 INFO L82 PathProgramCache]: Analyzing trace with hash -1236566682, now seen corresponding path program 1 times [2019-09-08 11:45:44,009 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:45:44,009 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:45:44,010 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:45:44,010 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:45:44,011 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:45:44,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:45:44,312 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 11:45:44,314 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 11:45:44,315 INFO L223 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) [2019-09-08 11:45:44,330 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 11:45:44,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:45:44,435 INFO L256 TraceCheckSpWp]: Trace formula consists of 603 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-08 11:45:44,446 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 11:45:44,592 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-09-08 11:45:44,597 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 11:45:44,598 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 4] total 12 [2019-09-08 11:45:44,598 INFO L454 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-09-08 11:45:44,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-09-08 11:45:44,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2019-09-08 11:45:44,599 INFO L87 Difference]: Start difference. First operand 10170 states and 14721 transitions. Second operand 12 states. [2019-09-08 11:45:58,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:45:58,293 INFO L93 Difference]: Finished difference Result 104074 states and 149159 transitions. [2019-09-08 11:45:58,293 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2019-09-08 11:45:58,294 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 83 [2019-09-08 11:45:58,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:45:58,509 INFO L225 Difference]: With dead ends: 104074 [2019-09-08 11:45:58,510 INFO L226 Difference]: Without dead ends: 93936 [2019-09-08 11:45:58,555 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2831 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1361, Invalid=5949, Unknown=0, NotChecked=0, Total=7310 [2019-09-08 11:45:58,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93936 states. [2019-09-08 11:46:02,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93936 to 37098. [2019-09-08 11:46:02,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37098 states. [2019-09-08 11:46:02,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37098 states to 37098 states and 52159 transitions. [2019-09-08 11:46:02,609 INFO L78 Accepts]: Start accepts. Automaton has 37098 states and 52159 transitions. Word has length 83 [2019-09-08 11:46:02,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:46:02,609 INFO L475 AbstractCegarLoop]: Abstraction has 37098 states and 52159 transitions. [2019-09-08 11:46:02,609 INFO L476 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-09-08 11:46:02,609 INFO L276 IsEmpty]: Start isEmpty. Operand 37098 states and 52159 transitions. [2019-09-08 11:46:02,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2019-09-08 11:46:02,613 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:46:02,613 INFO L399 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] [2019-09-08 11:46:02,613 INFO L418 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:46:02,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:46:02,614 INFO L82 PathProgramCache]: Analyzing trace with hash -982227461, now seen corresponding path program 1 times [2019-09-08 11:46:02,614 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:46:02,614 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:46:02,615 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:46:02,615 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:46:02,616 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:46:02,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:46:02,666 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 11:46:02,667 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 11:46:02,667 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-08 11:46:02,667 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-08 11:46:02,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-08 11:46:02,668 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 11:46:02,668 INFO L87 Difference]: Start difference. First operand 37098 states and 52159 transitions. Second operand 3 states. [2019-09-08 11:46:05,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:46:05,508 INFO L93 Difference]: Finished difference Result 60884 states and 85876 transitions. [2019-09-08 11:46:05,508 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-08 11:46:05,508 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 83 [2019-09-08 11:46:05,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:46:05,542 INFO L225 Difference]: With dead ends: 60884 [2019-09-08 11:46:05,542 INFO L226 Difference]: Without dead ends: 23818 [2019-09-08 11:46:05,593 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 11:46:05,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23818 states. [2019-09-08 11:46:07,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23818 to 23816. [2019-09-08 11:46:07,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23816 states. [2019-09-08 11:46:07,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23816 states to 23816 states and 33254 transitions. [2019-09-08 11:46:07,985 INFO L78 Accepts]: Start accepts. Automaton has 23816 states and 33254 transitions. Word has length 83 [2019-09-08 11:46:07,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:46:07,986 INFO L475 AbstractCegarLoop]: Abstraction has 23816 states and 33254 transitions. [2019-09-08 11:46:07,986 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-08 11:46:07,986 INFO L276 IsEmpty]: Start isEmpty. Operand 23816 states and 33254 transitions. [2019-09-08 11:46:07,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2019-09-08 11:46:07,988 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:46:07,989 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-08 11:46:07,989 INFO L418 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:46:07,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:46:07,989 INFO L82 PathProgramCache]: Analyzing trace with hash 1262120977, now seen corresponding path program 1 times [2019-09-08 11:46:07,989 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:46:07,989 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:46:07,991 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:46:07,991 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:46:07,991 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:46:08,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:46:08,195 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 11:46:08,196 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 11:46:08,196 INFO L223 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 [2019-09-08 11:46:08,214 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:46:08,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:46:08,303 INFO L256 TraceCheckSpWp]: Trace formula consists of 608 conjuncts, 36 conjunts are in the unsatisfiable core [2019-09-08 11:46:08,307 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 11:46:08,795 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:46:09,228 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 11:46:09,240 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 11:46:09,241 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 16] total 24 [2019-09-08 11:46:09,241 INFO L454 AbstractCegarLoop]: Interpolant automaton has 24 states [2019-09-08 11:46:09,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2019-09-08 11:46:09,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=489, Unknown=0, NotChecked=0, Total=552 [2019-09-08 11:46:09,243 INFO L87 Difference]: Start difference. First operand 23816 states and 33254 transitions. Second operand 24 states. [2019-09-08 11:46:10,864 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2019-09-08 11:46:11,038 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2019-09-08 11:46:11,287 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2019-09-08 11:46:11,441 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2019-09-08 11:46:11,676 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2019-09-08 11:46:12,206 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 54 [2019-09-08 11:46:14,858 WARN L188 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 49 [2019-09-08 11:46:16,356 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 40 [2019-09-08 11:46:17,072 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 43 [2019-09-08 11:46:32,256 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2019-09-08 11:46:32,466 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2019-09-08 11:46:32,824 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2019-09-08 11:46:33,126 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2019-09-08 11:46:33,284 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2019-09-08 11:46:33,635 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2019-09-08 11:46:34,397 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2019-09-08 11:46:34,701 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2019-09-08 11:46:34,946 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2019-09-08 11:46:35,090 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 49 [2019-09-08 11:46:35,320 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2019-09-08 11:46:35,466 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 49 [2019-09-08 11:46:35,660 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2019-09-08 11:46:36,142 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2019-09-08 11:46:36,404 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2019-09-08 11:46:39,218 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2019-09-08 11:46:40,988 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 57 [2019-09-08 11:46:46,495 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2019-09-08 11:47:06,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:47:06,328 INFO L93 Difference]: Finished difference Result 250202 states and 346238 transitions. [2019-09-08 11:47:06,328 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 266 states. [2019-09-08 11:47:06,329 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 84 [2019-09-08 11:47:06,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:47:06,768 INFO L225 Difference]: With dead ends: 250202 [2019-09-08 11:47:06,768 INFO L226 Difference]: Without dead ends: 226455 [2019-09-08 11:47:06,859 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 286 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35387 ImplicationChecksByTransitivity, 24.1s TimeCoverageRelationStatistics Valid=9867, Invalid=72789, Unknown=0, NotChecked=0, Total=82656 [2019-09-08 11:47:07,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226455 states. [2019-09-08 11:47:21,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226455 to 94819. [2019-09-08 11:47:21,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94819 states. [2019-09-08 11:47:21,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94819 states to 94819 states and 131181 transitions. [2019-09-08 11:47:21,832 INFO L78 Accepts]: Start accepts. Automaton has 94819 states and 131181 transitions. Word has length 84 [2019-09-08 11:47:21,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:47:21,833 INFO L475 AbstractCegarLoop]: Abstraction has 94819 states and 131181 transitions. [2019-09-08 11:47:21,833 INFO L476 AbstractCegarLoop]: Interpolant automaton has 24 states. [2019-09-08 11:47:21,833 INFO L276 IsEmpty]: Start isEmpty. Operand 94819 states and 131181 transitions. [2019-09-08 11:47:21,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2019-09-08 11:47:21,837 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:47:21,837 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-08 11:47:21,838 INFO L418 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:47:21,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:47:21,838 INFO L82 PathProgramCache]: Analyzing trace with hash 2085307495, now seen corresponding path program 1 times [2019-09-08 11:47:21,838 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:47:21,838 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:47:21,839 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:47:21,839 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:47:21,840 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:47:21,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:47:22,020 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 11:47:22,020 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 11:47:22,020 INFO L223 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) [2019-09-08 11:47:22,034 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 11:47:22,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:47:22,124 INFO L256 TraceCheckSpWp]: Trace formula consists of 610 conjuncts, 16 conjunts are in the unsatisfiable core [2019-09-08 11:47:22,127 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 11:47:22,217 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:47:22,436 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 11:47:22,439 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 11:47:22,439 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2019-09-08 11:47:22,440 INFO L454 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-09-08 11:47:22,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-09-08 11:47:22,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2019-09-08 11:47:22,441 INFO L87 Difference]: Start difference. First operand 94819 states and 131181 transitions. Second operand 17 states. [2019-09-08 11:48:32,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:48:32,865 INFO L93 Difference]: Finished difference Result 572972 states and 786548 transitions. [2019-09-08 11:48:32,865 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2019-09-08 11:48:32,865 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 85 [2019-09-08 11:48:32,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:48:33,587 INFO L225 Difference]: With dead ends: 572972 [2019-09-08 11:48:33,588 INFO L226 Difference]: Without dead ends: 490876 [2019-09-08 11:48:33,761 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 78 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 620 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=665, Invalid=1987, Unknown=0, NotChecked=0, Total=2652 [2019-09-08 11:48:34,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490876 states. [2019-09-08 11:49:10,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490876 to 220444. [2019-09-08 11:49:10,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 220444 states. [2019-09-08 11:49:10,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220444 states to 220444 states and 304495 transitions. [2019-09-08 11:49:10,732 INFO L78 Accepts]: Start accepts. Automaton has 220444 states and 304495 transitions. Word has length 85 [2019-09-08 11:49:10,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:49:10,732 INFO L475 AbstractCegarLoop]: Abstraction has 220444 states and 304495 transitions. [2019-09-08 11:49:10,732 INFO L476 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-09-08 11:49:10,732 INFO L276 IsEmpty]: Start isEmpty. Operand 220444 states and 304495 transitions. [2019-09-08 11:49:10,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2019-09-08 11:49:10,740 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:49:10,740 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-08 11:49:10,741 INFO L418 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:49:10,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:49:10,741 INFO L82 PathProgramCache]: Analyzing trace with hash 1833088786, now seen corresponding path program 1 times [2019-09-08 11:49:10,741 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:49:10,741 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:49:10,742 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:49:10,742 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:49:10,742 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:49:10,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:49:10,774 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-09-08 11:49:10,774 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 11:49:10,774 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-08 11:49:10,775 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-08 11:49:10,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-08 11:49:10,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 11:49:10,775 INFO L87 Difference]: Start difference. First operand 220444 states and 304495 transitions. Second operand 3 states. [2019-09-08 11:49:37,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:49:37,822 INFO L93 Difference]: Finished difference Result 389785 states and 538835 transitions. [2019-09-08 11:49:37,822 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-08 11:49:37,822 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 85 [2019-09-08 11:49:37,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:49:38,026 INFO L225 Difference]: With dead ends: 389785 [2019-09-08 11:49:38,026 INFO L226 Difference]: Without dead ends: 169881 [2019-09-08 11:49:38,140 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 11:49:38,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169881 states. [2019-09-08 11:50:05,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169881 to 169881. [2019-09-08 11:50:05,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 169881 states. [2019-09-08 11:50:05,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169881 states to 169881 states and 233146 transitions. [2019-09-08 11:50:05,998 INFO L78 Accepts]: Start accepts. Automaton has 169881 states and 233146 transitions. Word has length 85 [2019-09-08 11:50:05,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:50:05,998 INFO L475 AbstractCegarLoop]: Abstraction has 169881 states and 233146 transitions. [2019-09-08 11:50:05,998 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-08 11:50:05,998 INFO L276 IsEmpty]: Start isEmpty. Operand 169881 states and 233146 transitions. [2019-09-08 11:50:06,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2019-09-08 11:50:06,005 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:50:06,005 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-08 11:50:06,006 INFO L418 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:50:06,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:50:06,006 INFO L82 PathProgramCache]: Analyzing trace with hash 131295856, now seen corresponding path program 1 times [2019-09-08 11:50:06,006 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:50:06,006 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:50:06,007 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:50:06,008 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:50:06,008 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:50:06,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:50:06,053 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-09-08 11:50:06,053 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 11:50:06,053 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-08 11:50:06,054 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-08 11:50:06,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-08 11:50:06,054 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 11:50:06,054 INFO L87 Difference]: Start difference. First operand 169881 states and 233146 transitions. Second operand 3 states. [2019-09-08 11:50:28,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:50:28,919 INFO L93 Difference]: Finished difference Result 310439 states and 426912 transitions. [2019-09-08 11:50:28,919 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-08 11:50:28,919 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 86 [2019-09-08 11:50:28,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:50:29,082 INFO L225 Difference]: With dead ends: 310439 [2019-09-08 11:50:29,082 INFO L226 Difference]: Without dead ends: 141083 [2019-09-08 11:50:29,175 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 11:50:29,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141083 states. [2019-09-08 11:50:52,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141083 to 141083. [2019-09-08 11:50:52,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141083 states. [2019-09-08 11:50:52,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141083 states to 141083 states and 191806 transitions. [2019-09-08 11:50:52,409 INFO L78 Accepts]: Start accepts. Automaton has 141083 states and 191806 transitions. Word has length 86 [2019-09-08 11:50:52,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:50:52,409 INFO L475 AbstractCegarLoop]: Abstraction has 141083 states and 191806 transitions. [2019-09-08 11:50:52,409 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-08 11:50:52,409 INFO L276 IsEmpty]: Start isEmpty. Operand 141083 states and 191806 transitions. [2019-09-08 11:50:52,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2019-09-08 11:50:52,414 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:50:52,414 INFO L399 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] [2019-09-08 11:50:52,414 INFO L418 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:50:52,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:50:52,414 INFO L82 PathProgramCache]: Analyzing trace with hash 1788120362, now seen corresponding path program 1 times [2019-09-08 11:50:52,415 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:50:52,415 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:50:52,416 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:50:52,416 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:50:52,416 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:50:52,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:50:52,470 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 11:50:52,470 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 11:50:52,470 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-08 11:50:52,471 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-08 11:50:52,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-08 11:50:52,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 11:50:52,471 INFO L87 Difference]: Start difference. First operand 141083 states and 191806 transitions. Second operand 3 states. [2019-09-08 11:51:02,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:51:02,678 INFO L93 Difference]: Finished difference Result 204305 states and 278941 transitions. [2019-09-08 11:51:02,678 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-08 11:51:02,678 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 86 [2019-09-08 11:51:02,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:51:02,755 INFO L225 Difference]: With dead ends: 204305 [2019-09-08 11:51:02,756 INFO L226 Difference]: Without dead ends: 72212 [2019-09-08 11:51:02,826 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 11:51:02,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72212 states. [2019-09-08 11:51:16,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72212 to 72210. [2019-09-08 11:51:16,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72210 states. [2019-09-08 11:51:16,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72210 states to 72210 states and 96666 transitions. [2019-09-08 11:51:16,970 INFO L78 Accepts]: Start accepts. Automaton has 72210 states and 96666 transitions. Word has length 86 [2019-09-08 11:51:16,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:51:16,970 INFO L475 AbstractCegarLoop]: Abstraction has 72210 states and 96666 transitions. [2019-09-08 11:51:16,970 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-08 11:51:16,970 INFO L276 IsEmpty]: Start isEmpty. Operand 72210 states and 96666 transitions. [2019-09-08 11:51:16,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2019-09-08 11:51:16,972 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:51:16,972 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-08 11:51:16,973 INFO L418 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:51:16,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:51:16,973 INFO L82 PathProgramCache]: Analyzing trace with hash -1683522070, now seen corresponding path program 1 times [2019-09-08 11:51:16,973 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:51:16,973 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:51:16,975 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:51:16,975 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:51:16,975 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:51:16,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:51:18,752 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 11:51:18,753 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 11:51:18,753 INFO L223 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 [2019-09-08 11:51:18,764 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:51:18,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:51:18,845 INFO L256 TraceCheckSpWp]: Trace formula consists of 612 conjuncts, 24 conjunts are in the unsatisfiable core [2019-09-08 11:51:18,848 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 11:51:19,127 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:51:20,279 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 11:51:20,288 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 11:51:20,288 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 12] total 35 [2019-09-08 11:51:20,289 INFO L454 AbstractCegarLoop]: Interpolant automaton has 35 states [2019-09-08 11:51:20,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2019-09-08 11:51:20,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=1095, Unknown=0, NotChecked=0, Total=1190 [2019-09-08 11:51:20,290 INFO L87 Difference]: Start difference. First operand 72210 states and 96666 transitions. Second operand 35 states. [2019-09-08 11:51:20,461 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 46 [2019-09-08 11:51:21,354 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 44 [2019-09-08 11:51:21,531 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 43 [2019-09-08 11:51:21,819 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 48 [2019-09-08 11:51:22,031 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 50 [2019-09-08 11:51:22,335 WARN L188 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 59 [2019-09-08 11:51:22,649 WARN L188 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 75 [2019-09-08 11:51:23,056 WARN L188 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 81 [2019-09-08 11:51:23,507 WARN L188 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 95 [2019-09-08 11:51:24,134 WARN L188 SmtUtils]: Spent 496.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 110 [2019-09-08 11:51:24,816 WARN L188 SmtUtils]: Spent 563.00 ms on a formula simplification. DAG size of input: 163 DAG size of output: 128 [2019-09-08 11:51:25,315 WARN L188 SmtUtils]: Spent 435.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 90 [2019-09-08 11:51:26,757 WARN L188 SmtUtils]: Spent 420.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 108 [2019-09-08 11:51:27,903 WARN L188 SmtUtils]: Spent 975.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 144 [2019-09-08 11:51:29,011 WARN L188 SmtUtils]: Spent 988.00 ms on a formula simplification. DAG size of input: 195 DAG size of output: 149 [2019-09-08 11:51:29,813 WARN L188 SmtUtils]: Spent 701.00 ms on a formula simplification. DAG size of input: 167 DAG size of output: 124 [2019-09-08 11:51:30,335 WARN L188 SmtUtils]: Spent 437.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 101 [2019-09-08 11:51:31,194 WARN L188 SmtUtils]: Spent 768.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 129 [2019-09-08 11:51:31,564 WARN L188 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 86 [2019-09-08 11:51:31,851 WARN L188 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 74 [2019-09-08 11:51:32,300 WARN L188 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 101 [2019-09-08 11:51:32,631 WARN L188 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 74 [2019-09-08 11:51:32,956 WARN L188 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 85 [2019-09-08 11:51:33,282 WARN L188 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 88 [2019-09-08 11:51:33,525 WARN L188 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2019-09-08 11:51:33,713 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 58 [2019-09-08 11:51:33,941 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 61 [2019-09-08 11:51:34,096 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 46 [2019-09-08 11:51:34,409 WARN L188 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 85 [2019-09-08 11:51:34,667 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 58 [2019-09-08 11:51:34,931 WARN L188 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 78 [2019-09-08 11:51:35,338 WARN L188 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 82 [2019-09-08 11:51:35,608 WARN L188 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 69 [2019-09-08 11:51:35,899 WARN L188 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 82 [2019-09-08 11:51:36,122 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 49 [2019-09-08 11:51:36,329 WARN L188 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 53 [2019-09-08 11:51:36,662 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 55 [2019-09-08 11:51:36,967 WARN L188 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 76 [2019-09-08 11:51:37,341 WARN L188 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 80 [2019-09-08 11:51:37,635 WARN L188 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 67 [2019-09-08 11:51:37,985 WARN L188 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 80 [2019-09-08 11:51:38,288 WARN L188 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 83 [2019-09-08 11:51:38,740 WARN L188 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 84 [2019-09-08 11:51:39,003 WARN L188 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 71 [2019-09-08 11:51:39,347 WARN L188 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 78 [2019-09-08 11:51:39,533 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 55 [2019-09-08 11:51:39,982 WARN L188 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 82 [2019-09-08 11:51:40,222 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 58 [2019-09-08 11:51:40,569 WARN L188 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 69 [2019-09-08 11:51:41,089 WARN L188 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 82 [2019-09-08 11:51:41,273 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 57 [2019-09-08 11:51:41,743 WARN L188 SmtUtils]: Spent 399.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 85 [2019-09-08 11:51:41,922 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2019-09-08 11:51:42,348 WARN L188 SmtUtils]: Spent 287.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 86 [2019-09-08 11:51:42,601 WARN L188 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 62 [2019-09-08 11:51:42,935 WARN L188 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 73 [2019-09-08 11:51:43,782 WARN L188 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 75 [2019-09-08 11:51:43,964 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 51 [2019-09-08 11:51:44,589 WARN L188 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 75 [2019-09-08 11:51:44,975 WARN L188 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 79 [2019-09-08 11:51:45,169 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2019-09-08 11:51:45,457 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 52 [2019-09-08 11:51:45,744 WARN L188 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72 [2019-09-08 11:51:46,025 WARN L188 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 75 [2019-09-08 11:51:46,548 WARN L188 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 73 [2019-09-08 11:51:46,931 WARN L188 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 79 [2019-09-08 11:51:47,592 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 45 [2019-09-08 11:51:48,057 WARN L188 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 72 [2019-09-08 11:51:48,356 WARN L188 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 75 [2019-09-08 11:51:48,709 WARN L188 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 76 [2019-09-08 11:51:48,997 WARN L188 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 79 [2019-09-08 11:51:49,249 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 50 [2019-09-08 11:51:49,555 WARN L188 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 77 [2019-09-08 11:51:49,992 WARN L188 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 88 [2019-09-08 11:51:50,369 WARN L188 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 65 [2019-09-08 11:51:50,914 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 49 [2019-09-08 11:51:51,098 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 51 [2019-09-08 11:51:51,360 WARN L188 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 59 [2019-09-08 11:51:51,597 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 48 [2019-09-08 11:51:51,802 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 53 [2019-09-08 11:51:52,280 WARN L188 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 76 [2019-09-08 11:51:52,598 WARN L188 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 79 [2019-09-08 11:51:52,995 WARN L188 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 61 [2019-09-08 11:51:53,432 WARN L188 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 88 [2019-09-08 11:51:53,862 WARN L188 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 92 [2019-09-08 11:51:54,263 WARN L188 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 69 [2019-09-08 11:51:54,528 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 52 [2019-09-08 11:51:54,823 WARN L188 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 65 [2019-09-08 11:51:55,026 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 51 [2019-09-08 11:51:55,282 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 52 [2019-09-08 11:51:55,500 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 57 [2019-09-08 11:51:55,910 WARN L188 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 67 [2019-09-08 11:51:56,256 WARN L188 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 65 [2019-09-08 11:51:56,743 WARN L188 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 92 [2019-09-08 11:51:56,958 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 54 [2019-09-08 11:51:57,181 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 55 [2019-09-08 11:51:57,425 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 58 [2019-09-08 11:51:57,791 WARN L188 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 71 [2019-09-08 11:51:58,502 WARN L188 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 56 [2019-09-08 11:51:58,962 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 52 [2019-09-08 11:51:59,308 WARN L188 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 78 [2019-09-08 11:51:59,583 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 44 [2019-09-08 11:52:00,577 WARN L188 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 74 [2019-09-08 11:52:00,828 WARN L188 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 62 [2019-09-08 11:52:01,057 WARN L188 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 58 [2019-09-08 11:52:01,458 WARN L188 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 56 [2019-09-08 11:52:01,635 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 50 [2019-09-08 11:52:02,380 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2019-09-08 11:52:02,864 WARN L188 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 84 [2019-09-08 11:52:03,199 WARN L188 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 80 [2019-09-08 11:52:03,565 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 52 [2019-09-08 11:52:03,765 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 55 [2019-09-08 11:52:04,394 WARN L188 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 77 [2019-09-08 11:52:04,934 WARN L188 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 102 [2019-09-08 11:52:05,232 WARN L188 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 69 [2019-09-08 11:52:05,870 WARN L188 SmtUtils]: Spent 359.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 98 [2019-09-08 11:52:06,270 WARN L188 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 87 [2019-09-08 11:52:06,644 WARN L188 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 83 [2019-09-08 11:52:06,874 WARN L188 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 62 [2019-09-08 11:52:07,253 WARN L188 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 81 [2019-09-08 11:52:07,542 WARN L188 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 75 [2019-09-08 11:52:08,044 WARN L188 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 75 [2019-09-08 11:52:08,337 WARN L188 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 77 [2019-09-08 11:52:08,628 WARN L188 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 60 [2019-09-08 11:52:09,161 WARN L188 SmtUtils]: Spent 387.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 108 [2019-09-08 11:52:09,645 WARN L188 SmtUtils]: Spent 366.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 104 [2019-09-08 11:52:10,061 WARN L188 SmtUtils]: Spent 349.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 102 [2019-09-08 11:52:10,675 WARN L188 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 76 [2019-09-08 11:52:11,080 WARN L188 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 79 [2019-09-08 11:52:11,666 WARN L188 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 99 [2019-09-08 11:52:11,914 WARN L188 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 69 [2019-09-08 11:52:12,140 WARN L188 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 67 [2019-09-08 11:52:14,626 WARN L188 SmtUtils]: Spent 1.56 s on a formula simplification. DAG size of input: 137 DAG size of output: 108 [2019-09-08 11:52:15,107 WARN L188 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 105 [2019-09-08 11:52:15,476 WARN L188 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 74 [2019-09-08 11:52:16,210 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 57 [2019-09-08 11:52:16,631 WARN L188 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 72 [2019-09-08 11:52:17,154 WARN L188 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 89 [2019-09-08 11:52:17,868 WARN L188 SmtUtils]: Spent 466.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 114 [2019-09-08 11:52:18,121 WARN L188 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 57 [2019-09-08 11:52:18,359 WARN L188 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 58 [2019-09-08 11:52:18,772 WARN L188 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2019-09-08 11:52:19,008 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 45 [2019-09-08 11:52:19,510 WARN L188 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 91 [2019-09-08 11:52:19,779 WARN L188 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2019-09-08 11:52:20,459 WARN L188 SmtUtils]: Spent 394.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 101 [2019-09-08 11:52:20,839 WARN L188 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 81 [2019-09-08 11:52:21,457 WARN L188 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 73 [2019-09-08 11:52:21,754 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2019-09-08 11:52:22,009 WARN L188 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2019-09-08 11:52:22,374 WARN L188 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2019-09-08 11:52:23,223 WARN L188 SmtUtils]: Spent 483.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 120 [2019-09-08 11:52:23,490 WARN L188 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 64 [2019-09-08 11:52:24,023 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 44 [2019-09-08 11:52:24,340 WARN L188 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 67 [2019-09-08 11:52:24,702 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 43 [2019-09-08 11:52:25,541 WARN L188 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 84 [2019-09-08 11:52:26,472 WARN L188 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 66 [2019-09-08 11:52:27,028 WARN L188 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 102 [2019-09-08 11:52:27,711 WARN L188 SmtUtils]: Spent 527.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 116 [2019-09-08 11:52:28,231 WARN L188 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 90 [2019-09-08 11:52:28,938 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 45 [2019-09-08 11:52:29,745 WARN L188 SmtUtils]: Spent 594.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 134 [2019-09-08 11:52:30,257 WARN L188 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 96 [2019-09-08 11:52:30,790 WARN L188 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 108 [2019-09-08 11:52:31,593 WARN L188 SmtUtils]: Spent 431.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 114 [2019-09-08 11:52:32,082 WARN L188 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 67 [2019-09-08 11:52:32,562 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 46 [2019-09-08 11:52:33,545 WARN L188 SmtUtils]: Spent 751.00 ms on a formula simplification. DAG size of input: 158 DAG size of output: 118 [2019-09-08 11:52:34,298 WARN L188 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 73 [2019-09-08 11:52:35,154 WARN L188 SmtUtils]: Spent 718.00 ms on a formula simplification. DAG size of input: 166 DAG size of output: 123 [2019-09-08 11:52:35,565 WARN L188 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 64 [2019-09-08 11:52:36,041 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 55 [2019-09-08 11:52:36,346 WARN L188 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 80 [2019-09-08 11:52:36,633 WARN L188 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 68 [2019-09-08 11:52:37,357 WARN L188 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 71 [2019-09-08 11:52:37,737 WARN L188 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 74 [2019-09-08 11:52:39,214 WARN L188 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 68 [2019-09-08 11:52:39,861 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 52 [2019-09-08 11:52:40,382 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 55 [2019-09-08 11:52:41,347 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 52 [2019-09-08 11:52:41,684 WARN L188 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 69 [2019-09-08 11:52:41,908 WARN L188 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 60 [2019-09-08 11:52:42,844 WARN L188 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2019-09-08 11:52:43,864 WARN L188 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 67 [2019-09-08 11:52:44,319 WARN L188 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 67 [2019-09-08 11:52:44,952 WARN L188 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 71 [2019-09-08 11:52:45,463 WARN L188 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 67 [2019-09-08 11:52:46,504 WARN L188 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 86 [2019-09-08 11:52:46,847 WARN L188 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 60 [2019-09-08 11:52:47,404 WARN L188 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 73 [2019-09-08 11:52:47,696 WARN L188 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2019-09-08 11:52:47,949 WARN L188 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 67 [2019-09-08 11:52:48,372 WARN L188 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2019-09-08 11:52:48,834 WARN L188 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 90 [2019-09-08 11:52:49,230 WARN L188 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 69 [2019-09-08 11:52:49,518 WARN L188 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 64 [2019-09-08 11:52:50,233 WARN L188 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 78 [2019-09-08 11:52:50,659 WARN L188 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 72 [2019-09-08 11:52:51,418 WARN L188 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 77 [2019-09-08 11:52:51,874 WARN L188 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 67 [2019-09-08 11:52:52,579 WARN L188 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 74 [2019-09-08 11:52:52,809 WARN L188 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 65 [2019-09-08 11:52:53,071 WARN L188 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 68 [2019-09-08 11:52:53,279 WARN L188 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 58 [2019-09-08 11:52:53,937 WARN L188 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 71 [2019-09-08 11:52:54,493 WARN L188 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 80 [2019-09-08 11:52:54,781 WARN L188 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 74 [2019-09-08 11:52:55,811 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2019-09-08 11:52:57,394 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 47 [2019-09-08 11:52:58,290 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 51 [2019-09-08 11:52:59,640 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 51 [2019-09-08 11:53:00,062 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 45 [2019-09-08 11:53:00,284 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 42 [2019-09-08 11:53:01,297 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 52 [2019-09-08 11:53:01,905 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 45 [2019-09-08 11:53:03,286 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 49 [2019-09-08 11:53:12,428 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 61 [2019-09-08 11:53:12,685 WARN L188 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 70 [2019-09-08 11:53:13,416 WARN L188 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 73 [2019-09-08 11:53:13,710 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 58 [2019-09-08 11:53:14,650 WARN L188 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 64 [2019-09-08 11:53:15,153 WARN L188 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 80 [2019-09-08 11:53:15,402 WARN L188 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 73 [2019-09-08 11:53:15,760 WARN L188 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 68 [2019-09-08 11:53:16,550 WARN L188 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 68 [2019-09-08 11:53:17,032 WARN L188 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 74 [2019-09-08 11:53:17,440 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 65 [2019-09-08 11:53:17,715 WARN L188 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 75 [2019-09-08 11:53:18,523 WARN L188 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 71 [2019-09-08 11:53:18,796 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 55 [2019-09-08 11:53:19,273 WARN L188 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 85 [2019-09-08 11:53:20,337 WARN L188 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 76 [2019-09-08 11:53:21,006 WARN L188 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 92 [2019-09-08 11:53:22,133 WARN L188 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2019-09-08 11:53:22,641 WARN L188 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 86 [2019-09-08 11:53:23,902 WARN L188 SmtUtils]: Spent 559.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 83 [2019-09-08 11:54:02,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:54:02,748 INFO L93 Difference]: Finished difference Result 438984 states and 591058 transitions. [2019-09-08 11:54:02,749 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 324 states. [2019-09-08 11:54:02,749 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 86 [2019-09-08 11:54:02,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:54:03,218 INFO L225 Difference]: With dead ends: 438984 [2019-09-08 11:54:03,218 INFO L226 Difference]: Without dead ends: 389027 [2019-09-08 11:54:03,309 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 425 GetRequests, 68 SyntacticMatches, 10 SemanticMatches, 347 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52632 ImplicationChecksByTransitivity, 82.5s TimeCoverageRelationStatistics Valid=12220, Invalid=109232, Unknown=0, NotChecked=0, Total=121452 [2019-09-08 11:54:03,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389027 states. [2019-09-08 11:54:25,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389027 to 73862. [2019-09-08 11:54:25,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73862 states. [2019-09-08 11:54:25,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73862 states to 73862 states and 99033 transitions. [2019-09-08 11:54:25,134 INFO L78 Accepts]: Start accepts. Automaton has 73862 states and 99033 transitions. Word has length 86 [2019-09-08 11:54:25,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:54:25,134 INFO L475 AbstractCegarLoop]: Abstraction has 73862 states and 99033 transitions. [2019-09-08 11:54:25,134 INFO L476 AbstractCegarLoop]: Interpolant automaton has 35 states. [2019-09-08 11:54:25,134 INFO L276 IsEmpty]: Start isEmpty. Operand 73862 states and 99033 transitions. [2019-09-08 11:54:25,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2019-09-08 11:54:25,137 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:54:25,137 INFO L399 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] [2019-09-08 11:54:25,137 INFO L418 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:54:25,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:54:25,137 INFO L82 PathProgramCache]: Analyzing trace with hash -229751769, now seen corresponding path program 1 times [2019-09-08 11:54:25,137 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:54:25,137 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:54:25,138 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:54:25,139 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:54:25,139 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:54:25,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:54:25,176 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-08 11:54:25,177 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 11:54:25,177 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-08 11:54:25,177 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-08 11:54:25,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-08 11:54:25,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 11:54:25,178 INFO L87 Difference]: Start difference. First operand 73862 states and 99033 transitions. Second operand 3 states. [2019-09-08 11:54:29,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:54:29,630 INFO L93 Difference]: Finished difference Result 95149 states and 128194 transitions. [2019-09-08 11:54:29,630 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-08 11:54:29,630 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 86 [2019-09-08 11:54:29,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:54:29,652 INFO L225 Difference]: With dead ends: 95149 [2019-09-08 11:54:29,652 INFO L226 Difference]: Without dead ends: 21465 [2019-09-08 11:54:29,694 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 11:54:29,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21465 states. [2019-09-08 11:54:34,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21465 to 21465. [2019-09-08 11:54:34,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21465 states. [2019-09-08 11:54:34,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21465 states to 21465 states and 29058 transitions. [2019-09-08 11:54:34,027 INFO L78 Accepts]: Start accepts. Automaton has 21465 states and 29058 transitions. Word has length 86 [2019-09-08 11:54:34,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:54:34,027 INFO L475 AbstractCegarLoop]: Abstraction has 21465 states and 29058 transitions. [2019-09-08 11:54:34,027 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-08 11:54:34,027 INFO L276 IsEmpty]: Start isEmpty. Operand 21465 states and 29058 transitions. [2019-09-08 11:54:34,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2019-09-08 11:54:34,028 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:54:34,028 INFO L399 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] [2019-09-08 11:54:34,028 INFO L418 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:54:34,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:54:34,029 INFO L82 PathProgramCache]: Analyzing trace with hash 1149367248, now seen corresponding path program 1 times [2019-09-08 11:54:34,029 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:54:34,029 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:54:34,029 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:54:34,030 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:54:34,030 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:54:34,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:54:34,071 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 11:54:34,071 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 11:54:34,072 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-08 11:54:34,072 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-08 11:54:34,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-08 11:54:34,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 11:54:34,072 INFO L87 Difference]: Start difference. First operand 21465 states and 29058 transitions. Second operand 3 states. [2019-09-08 11:54:36,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:54:36,513 INFO L93 Difference]: Finished difference Result 31696 states and 43204 transitions. [2019-09-08 11:54:36,513 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-08 11:54:36,513 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 87 [2019-09-08 11:54:36,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:54:36,524 INFO L225 Difference]: With dead ends: 31696 [2019-09-08 11:54:36,524 INFO L226 Difference]: Without dead ends: 12451 [2019-09-08 11:54:36,536 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 11:54:36,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12451 states. [2019-09-08 11:54:38,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12451 to 12449. [2019-09-08 11:54:38,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12449 states. [2019-09-08 11:54:38,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12449 states to 12449 states and 16567 transitions. [2019-09-08 11:54:38,972 INFO L78 Accepts]: Start accepts. Automaton has 12449 states and 16567 transitions. Word has length 87 [2019-09-08 11:54:38,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:54:38,972 INFO L475 AbstractCegarLoop]: Abstraction has 12449 states and 16567 transitions. [2019-09-08 11:54:38,972 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-08 11:54:38,972 INFO L276 IsEmpty]: Start isEmpty. Operand 12449 states and 16567 transitions. [2019-09-08 11:54:38,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2019-09-08 11:54:38,973 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:54:38,973 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-08 11:54:38,973 INFO L418 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:54:38,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:54:38,973 INFO L82 PathProgramCache]: Analyzing trace with hash 555199248, now seen corresponding path program 1 times [2019-09-08 11:54:38,973 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:54:38,974 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:54:38,974 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:54:38,974 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:54:38,974 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:54:39,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:54:39,643 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 11:54:39,643 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 11:54:39,643 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 11:54:39,653 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:54:39,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:54:39,737 INFO L256 TraceCheckSpWp]: Trace formula consists of 613 conjuncts, 19 conjunts are in the unsatisfiable core [2019-09-08 11:54:39,739 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 11:54:39,902 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:54:40,194 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 11:54:40,201 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 11:54:40,201 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 24 [2019-09-08 11:54:40,201 INFO L454 AbstractCegarLoop]: Interpolant automaton has 24 states [2019-09-08 11:54:40,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2019-09-08 11:54:40,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=495, Unknown=0, NotChecked=0, Total=552 [2019-09-08 11:54:40,202 INFO L87 Difference]: Start difference. First operand 12449 states and 16567 transitions. Second operand 24 states. [2019-09-08 11:54:41,761 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 28 [2019-09-08 11:54:43,552 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 30 [2019-09-08 11:54:44,195 WARN L188 SmtUtils]: Spent 260.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 54 [2019-09-08 11:54:44,533 WARN L188 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 63 [2019-09-08 11:54:44,832 WARN L188 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 68 [2019-09-08 11:54:45,108 WARN L188 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 74 [2019-09-08 11:54:45,409 WARN L188 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 74 [2019-09-08 11:54:45,695 WARN L188 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 75 [2019-09-08 11:54:45,948 WARN L188 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 72 [2019-09-08 11:54:46,181 WARN L188 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65 [2019-09-08 11:54:46,406 WARN L188 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2019-09-08 11:54:47,107 WARN L188 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65 [2019-09-08 11:54:47,512 WARN L188 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 69 [2019-09-08 11:54:47,692 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 58 [2019-09-08 11:54:47,931 WARN L188 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2019-09-08 11:54:48,186 WARN L188 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 62 [2019-09-08 11:54:48,461 WARN L188 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 69 [2019-09-08 11:54:48,937 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2019-09-08 11:54:49,309 WARN L188 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 63 [2019-09-08 11:54:49,823 WARN L188 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 33 [2019-09-08 11:54:53,927 WARN L188 SmtUtils]: Spent 810.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 36 [2019-09-08 11:54:58,254 WARN L188 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 43 [2019-09-08 11:55:00,092 WARN L188 SmtUtils]: Spent 789.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 43 [2019-09-08 11:55:07,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:55:07,234 INFO L93 Difference]: Finished difference Result 39881 states and 53097 transitions. [2019-09-08 11:55:07,234 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2019-09-08 11:55:07,235 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 87 [2019-09-08 11:55:07,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:55:07,261 INFO L225 Difference]: With dead ends: 39881 [2019-09-08 11:55:07,261 INFO L226 Difference]: Without dead ends: 30850 [2019-09-08 11:55:07,269 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4044 ImplicationChecksByTransitivity, 12.5s TimeCoverageRelationStatistics Valid=1764, Invalid=10226, Unknown=0, NotChecked=0, Total=11990 [2019-09-08 11:55:07,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30850 states. [2019-09-08 11:55:09,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30850 to 10910. [2019-09-08 11:55:09,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10910 states. [2019-09-08 11:55:09,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10910 states to 10910 states and 14705 transitions. [2019-09-08 11:55:09,749 INFO L78 Accepts]: Start accepts. Automaton has 10910 states and 14705 transitions. Word has length 87 [2019-09-08 11:55:09,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:55:09,749 INFO L475 AbstractCegarLoop]: Abstraction has 10910 states and 14705 transitions. [2019-09-08 11:55:09,749 INFO L476 AbstractCegarLoop]: Interpolant automaton has 24 states. [2019-09-08 11:55:09,749 INFO L276 IsEmpty]: Start isEmpty. Operand 10910 states and 14705 transitions. [2019-09-08 11:55:09,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-09-08 11:55:09,750 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:55:09,750 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-08 11:55:09,750 INFO L418 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:55:09,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:55:09,751 INFO L82 PathProgramCache]: Analyzing trace with hash -957292330, now seen corresponding path program 1 times [2019-09-08 11:55:09,751 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:55:09,751 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:55:09,752 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:55:09,752 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:55:09,752 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:55:09,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:55:09,791 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-09-08 11:55:09,791 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 11:55:09,791 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-08 11:55:09,792 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-08 11:55:09,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-08 11:55:09,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 11:55:09,792 INFO L87 Difference]: Start difference. First operand 10910 states and 14705 transitions. Second operand 3 states. [2019-09-08 11:55:11,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:55:11,376 INFO L93 Difference]: Finished difference Result 18264 states and 24634 transitions. [2019-09-08 11:55:11,376 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-08 11:55:11,376 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 88 [2019-09-08 11:55:11,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:55:11,383 INFO L225 Difference]: With dead ends: 18264 [2019-09-08 11:55:11,383 INFO L226 Difference]: Without dead ends: 7436 [2019-09-08 11:55:11,392 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 11:55:11,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7436 states. [2019-09-08 11:55:13,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7436 to 7436. [2019-09-08 11:55:13,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7436 states. [2019-09-08 11:55:13,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7436 states to 7436 states and 9911 transitions. [2019-09-08 11:55:13,110 INFO L78 Accepts]: Start accepts. Automaton has 7436 states and 9911 transitions. Word has length 88 [2019-09-08 11:55:13,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:55:13,110 INFO L475 AbstractCegarLoop]: Abstraction has 7436 states and 9911 transitions. [2019-09-08 11:55:13,111 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-08 11:55:13,111 INFO L276 IsEmpty]: Start isEmpty. Operand 7436 states and 9911 transitions. [2019-09-08 11:55:13,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2019-09-08 11:55:13,111 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:55:13,112 INFO L399 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 11:55:13,112 INFO L418 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:55:13,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:55:13,112 INFO L82 PathProgramCache]: Analyzing trace with hash -1945287635, now seen corresponding path program 1 times [2019-09-08 11:55:13,112 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:55:13,112 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:55:13,113 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:55:13,113 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:55:13,113 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:55:13,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:55:13,166 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 41 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 11:55:13,167 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 11:55:13,167 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-08 11:55:13,181 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 11:55:13,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:55:13,272 INFO L256 TraceCheckSpWp]: Trace formula consists of 696 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-08 11:55:13,274 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 11:55:13,349 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 12 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 11:55:13,352 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 11:55:13,352 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 10 [2019-09-08 11:55:13,353 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-09-08 11:55:13,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-09-08 11:55:13,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2019-09-08 11:55:13,353 INFO L87 Difference]: Start difference. First operand 7436 states and 9911 transitions. Second operand 10 states. [2019-09-08 11:55:15,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:55:15,372 INFO L93 Difference]: Finished difference Result 14262 states and 18967 transitions. [2019-09-08 11:55:15,372 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-08 11:55:15,372 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 114 [2019-09-08 11:55:15,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:55:15,378 INFO L225 Difference]: With dead ends: 14262 [2019-09-08 11:55:15,378 INFO L226 Difference]: Without dead ends: 7208 [2019-09-08 11:55:15,384 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2019-09-08 11:55:15,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7208 states. [2019-09-08 11:55:16,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7208 to 6532. [2019-09-08 11:55:16,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6532 states. [2019-09-08 11:55:16,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6532 states to 6532 states and 8608 transitions. [2019-09-08 11:55:16,783 INFO L78 Accepts]: Start accepts. Automaton has 6532 states and 8608 transitions. Word has length 114 [2019-09-08 11:55:16,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:55:16,783 INFO L475 AbstractCegarLoop]: Abstraction has 6532 states and 8608 transitions. [2019-09-08 11:55:16,783 INFO L476 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-09-08 11:55:16,783 INFO L276 IsEmpty]: Start isEmpty. Operand 6532 states and 8608 transitions. [2019-09-08 11:55:16,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2019-09-08 11:55:16,785 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:55:16,785 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 11:55:16,786 INFO L418 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:55:16,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:55:16,786 INFO L82 PathProgramCache]: Analyzing trace with hash 1627046488, now seen corresponding path program 1 times [2019-09-08 11:55:16,786 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:55:16,786 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:55:16,787 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:55:16,787 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:55:16,787 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:55:16,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:55:16,854 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-09-08 11:55:16,855 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 11:55:16,855 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-08 11:55:16,855 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-08 11:55:16,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-08 11:55:16,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 11:55:16,856 INFO L87 Difference]: Start difference. First operand 6532 states and 8608 transitions. Second operand 3 states. [2019-09-08 11:55:17,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:55:17,782 INFO L93 Difference]: Finished difference Result 9744 states and 12911 transitions. [2019-09-08 11:55:17,782 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-08 11:55:17,782 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 139 [2019-09-08 11:55:17,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:55:17,785 INFO L225 Difference]: With dead ends: 9744 [2019-09-08 11:55:17,785 INFO L226 Difference]: Without dead ends: 3422 [2019-09-08 11:55:17,790 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 11:55:17,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3422 states. [2019-09-08 11:55:18,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3422 to 3420. [2019-09-08 11:55:18,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3420 states. [2019-09-08 11:55:18,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3420 states to 3420 states and 4462 transitions. [2019-09-08 11:55:18,524 INFO L78 Accepts]: Start accepts. Automaton has 3420 states and 4462 transitions. Word has length 139 [2019-09-08 11:55:18,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:55:18,524 INFO L475 AbstractCegarLoop]: Abstraction has 3420 states and 4462 transitions. [2019-09-08 11:55:18,524 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-08 11:55:18,525 INFO L276 IsEmpty]: Start isEmpty. Operand 3420 states and 4462 transitions. [2019-09-08 11:55:18,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2019-09-08 11:55:18,526 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:55:18,526 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 11:55:18,526 INFO L418 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:55:18,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:55:18,526 INFO L82 PathProgramCache]: Analyzing trace with hash -39973736, now seen corresponding path program 1 times [2019-09-08 11:55:18,526 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:55:18,526 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:55:18,527 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:55:18,527 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:55:18,527 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:55:18,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:55:18,780 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 35 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 11:55:18,780 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 11:55:18,780 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 11:55:18,790 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:55:18,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:55:18,893 INFO L256 TraceCheckSpWp]: Trace formula consists of 774 conjuncts, 22 conjunts are in the unsatisfiable core [2019-09-08 11:55:18,895 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 11:55:19,129 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:55:19,246 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:55:19,527 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 49 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 11:55:19,539 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 11:55:19,540 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2019-09-08 11:55:19,540 INFO L454 AbstractCegarLoop]: Interpolant automaton has 21 states [2019-09-08 11:55:19,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2019-09-08 11:55:19,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=368, Unknown=0, NotChecked=0, Total=420 [2019-09-08 11:55:19,541 INFO L87 Difference]: Start difference. First operand 3420 states and 4462 transitions. Second operand 21 states. [2019-09-08 11:55:19,716 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2019-09-08 11:55:20,310 WARN L188 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2019-09-08 11:55:20,574 WARN L188 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 56 [2019-09-08 11:55:21,111 WARN L188 SmtUtils]: Spent 356.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 65 [2019-09-08 11:55:21,492 WARN L188 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 68 [2019-09-08 11:55:21,800 WARN L188 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 71 [2019-09-08 11:55:22,116 WARN L188 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 68 [2019-09-08 11:55:22,608 WARN L188 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 76 [2019-09-08 11:55:22,958 WARN L188 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 73 [2019-09-08 11:55:23,429 WARN L188 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 76 [2019-09-08 11:55:23,842 WARN L188 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 71 [2019-09-08 11:55:24,201 WARN L188 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 82 [2019-09-08 11:55:24,490 WARN L188 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 77 [2019-09-08 11:55:24,955 WARN L188 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 85 [2019-09-08 11:55:25,259 WARN L188 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 80 [2019-09-08 11:55:25,589 WARN L188 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 82 [2019-09-08 11:55:26,201 WARN L188 SmtUtils]: Spent 554.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 70 [2019-09-08 11:55:26,800 WARN L188 SmtUtils]: Spent 537.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 77 [2019-09-08 11:55:27,385 WARN L188 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 87 [2019-09-08 11:55:27,693 WARN L188 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 75 [2019-09-08 11:55:28,074 WARN L188 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 87 [2019-09-08 11:55:28,390 WARN L188 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 75 [2019-09-08 11:55:28,744 WARN L188 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 87 [2019-09-08 11:55:29,050 WARN L188 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 75 [2019-09-08 11:55:29,411 WARN L188 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 77 [2019-09-08 11:55:29,989 WARN L188 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 87 [2019-09-08 11:55:30,308 WARN L188 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 75 [2019-09-08 11:55:30,724 WARN L188 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 78 [2019-09-08 11:55:31,026 WARN L188 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 77 [2019-09-08 11:55:31,546 WARN L188 SmtUtils]: Spent 409.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 74 [2019-09-08 11:55:32,001 WARN L188 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 87 [2019-09-08 11:55:32,777 WARN L188 SmtUtils]: Spent 696.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 77 [2019-09-08 11:55:33,173 WARN L188 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 81 [2019-09-08 11:55:33,554 WARN L188 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 74 [2019-09-08 11:55:33,935 WARN L188 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 78 [2019-09-08 11:55:35,357 WARN L188 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2019-09-08 11:55:35,867 WARN L188 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 82 [2019-09-08 11:55:36,692 WARN L188 SmtUtils]: Spent 556.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 79 [2019-09-08 11:55:37,668 WARN L188 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 78 [2019-09-08 11:55:38,176 WARN L188 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 87 [2019-09-08 11:55:38,531 WARN L188 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 68 [2019-09-08 11:55:38,884 WARN L188 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 78 [2019-09-08 11:55:39,518 WARN L188 SmtUtils]: Spent 521.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 81 [2019-09-08 11:55:40,187 WARN L188 SmtUtils]: Spent 344.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 73 [2019-09-08 11:55:41,100 WARN L188 SmtUtils]: Spent 398.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 84 [2019-09-08 11:55:41,726 WARN L188 SmtUtils]: Spent 311.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 74 [2019-09-08 11:55:42,278 WARN L188 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 90 [2019-09-08 11:55:42,819 WARN L188 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 79 [2019-09-08 11:55:49,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:55:49,228 INFO L93 Difference]: Finished difference Result 31763 states and 42004 transitions. [2019-09-08 11:55:49,228 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2019-09-08 11:55:49,228 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 139 [2019-09-08 11:55:49,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:55:49,255 INFO L225 Difference]: With dead ends: 31763 [2019-09-08 11:55:49,255 INFO L226 Difference]: Without dead ends: 28497 [2019-09-08 11:55:49,263 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 130 SyntacticMatches, 1 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1123 ImplicationChecksByTransitivity, 18.0s TimeCoverageRelationStatistics Valid=1196, Invalid=3916, Unknown=0, NotChecked=0, Total=5112 [2019-09-08 11:55:49,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28497 states. [2019-09-08 11:55:53,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28497 to 13078. [2019-09-08 11:55:53,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13078 states. [2019-09-08 11:55:53,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13078 states to 13078 states and 16730 transitions. [2019-09-08 11:55:53,181 INFO L78 Accepts]: Start accepts. Automaton has 13078 states and 16730 transitions. Word has length 139 [2019-09-08 11:55:53,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:55:53,181 INFO L475 AbstractCegarLoop]: Abstraction has 13078 states and 16730 transitions. [2019-09-08 11:55:53,181 INFO L476 AbstractCegarLoop]: Interpolant automaton has 21 states. [2019-09-08 11:55:53,181 INFO L276 IsEmpty]: Start isEmpty. Operand 13078 states and 16730 transitions. [2019-09-08 11:55:53,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2019-09-08 11:55:53,185 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:55:53,185 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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] [2019-09-08 11:55:53,185 INFO L418 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:55:53,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:55:53,185 INFO L82 PathProgramCache]: Analyzing trace with hash -298203361, now seen corresponding path program 1 times [2019-09-08 11:55:53,185 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:55:53,185 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:55:53,186 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:55:53,186 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:55:53,187 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:55:53,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:55:53,467 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 21 proven. 84 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 11:55:53,468 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 11:55:53,468 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 11:55:53,478 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:55:53,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:55:53,581 INFO L256 TraceCheckSpWp]: Trace formula consists of 779 conjuncts, 22 conjunts are in the unsatisfiable core [2019-09-08 11:55:53,583 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 11:55:53,779 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:55:53,892 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:55:54,105 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 23 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 11:55:54,109 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 11:55:54,110 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2019-09-08 11:55:54,110 INFO L454 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-09-08 11:55:54,110 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-09-08 11:55:54,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2019-09-08 11:55:54,111 INFO L87 Difference]: Start difference. First operand 13078 states and 16730 transitions. Second operand 20 states. [2019-09-08 11:55:54,245 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 46 [2019-09-08 11:55:54,729 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2019-09-08 11:55:55,187 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2019-09-08 11:55:55,433 WARN L188 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2019-09-08 11:55:55,613 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2019-09-08 11:55:56,226 WARN L188 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2019-09-08 11:55:56,586 WARN L188 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2019-09-08 11:55:56,844 WARN L188 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2019-09-08 11:55:57,218 WARN L188 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2019-09-08 11:55:57,897 WARN L188 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2019-09-08 11:55:59,850 WARN L188 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2019-09-08 11:56:00,523 WARN L188 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 65 [2019-09-08 11:56:03,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:56:03,826 INFO L93 Difference]: Finished difference Result 21998 states and 28271 transitions. [2019-09-08 11:56:03,827 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-09-08 11:56:03,827 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 140 [2019-09-08 11:56:03,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:56:03,840 INFO L225 Difference]: With dead ends: 21998 [2019-09-08 11:56:03,841 INFO L226 Difference]: Without dead ends: 15342 [2019-09-08 11:56:03,848 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 132 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=298, Invalid=892, Unknown=0, NotChecked=0, Total=1190 [2019-09-08 11:56:03,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15342 states. [2019-09-08 11:56:08,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15342 to 13078. [2019-09-08 11:56:08,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13078 states. [2019-09-08 11:56:08,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13078 states to 13078 states and 16650 transitions. [2019-09-08 11:56:08,356 INFO L78 Accepts]: Start accepts. Automaton has 13078 states and 16650 transitions. Word has length 140 [2019-09-08 11:56:08,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:56:08,356 INFO L475 AbstractCegarLoop]: Abstraction has 13078 states and 16650 transitions. [2019-09-08 11:56:08,356 INFO L476 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-09-08 11:56:08,356 INFO L276 IsEmpty]: Start isEmpty. Operand 13078 states and 16650 transitions. [2019-09-08 11:56:08,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2019-09-08 11:56:08,360 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:56:08,360 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 11:56:08,360 INFO L418 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:56:08,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:56:08,360 INFO L82 PathProgramCache]: Analyzing trace with hash -1714943570, now seen corresponding path program 1 times [2019-09-08 11:56:08,361 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:56:08,361 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:56:08,361 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:56:08,362 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:56:08,362 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:56:08,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:56:08,747 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 30 proven. 76 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 11:56:08,748 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 11:56:08,748 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 11:56:08,759 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:56:08,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:56:08,868 INFO L256 TraceCheckSpWp]: Trace formula consists of 780 conjuncts, 24 conjunts are in the unsatisfiable core [2019-09-08 11:56:08,870 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 11:56:09,156 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:56:09,497 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:56:09,498 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:56:09,498 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:56:09,885 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 62 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 11:56:09,889 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 11:56:09,889 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13] total 25 [2019-09-08 11:56:09,889 INFO L454 AbstractCegarLoop]: Interpolant automaton has 25 states [2019-09-08 11:56:09,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2019-09-08 11:56:09,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=534, Unknown=0, NotChecked=0, Total=600 [2019-09-08 11:56:09,890 INFO L87 Difference]: Start difference. First operand 13078 states and 16650 transitions. Second operand 25 states. [2019-09-08 11:56:10,905 WARN L188 SmtUtils]: Spent 936.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 58 [2019-09-08 11:56:11,400 WARN L188 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 64 [2019-09-08 11:56:12,320 WARN L188 SmtUtils]: Spent 839.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 66 [2019-09-08 11:56:12,820 WARN L188 SmtUtils]: Spent 434.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 61 [2019-09-08 11:56:13,104 WARN L188 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2019-09-08 11:56:13,320 WARN L188 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 58 [2019-09-08 11:56:13,535 WARN L188 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 61 [2019-09-08 11:56:13,822 WARN L188 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 73 [2019-09-08 11:56:14,217 WARN L188 SmtUtils]: Spent 332.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 87 [2019-09-08 11:56:15,023 WARN L188 SmtUtils]: Spent 581.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 89 [2019-09-08 11:56:15,651 WARN L188 SmtUtils]: Spent 540.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 83 [2019-09-08 11:56:16,403 WARN L188 SmtUtils]: Spent 685.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 84 [2019-09-08 11:56:16,882 WARN L188 SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 84 [2019-09-08 11:56:17,924 WARN L188 SmtUtils]: Spent 949.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 76 [2019-09-08 11:56:19,215 WARN L188 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 117 DAG size of output: 78 [2019-09-08 11:56:20,237 WARN L188 SmtUtils]: Spent 941.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 78 [2019-09-08 11:56:24,072 WARN L188 SmtUtils]: Spent 3.66 s on a formula simplification. DAG size of input: 122 DAG size of output: 83 [2019-09-08 11:56:27,382 WARN L188 SmtUtils]: Spent 2.98 s on a formula simplification. DAG size of input: 116 DAG size of output: 88 [2019-09-08 11:56:28,204 WARN L188 SmtUtils]: Spent 728.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 83 [2019-09-08 11:56:28,580 WARN L188 SmtUtils]: Spent 309.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 76 [2019-09-08 11:56:29,070 WARN L188 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 71 [2019-09-08 11:56:30,463 WARN L188 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 122 DAG size of output: 95 [2019-09-08 11:56:32,747 WARN L188 SmtUtils]: Spent 2.20 s on a formula simplification. DAG size of input: 117 DAG size of output: 90 [2019-09-08 11:56:33,397 WARN L188 SmtUtils]: Spent 585.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 86 [2019-09-08 11:56:34,223 WARN L188 SmtUtils]: Spent 716.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 81 [2019-09-08 11:56:35,056 WARN L188 SmtUtils]: Spent 417.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 84 [2019-09-08 11:56:35,494 WARN L188 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 79 [2019-09-08 11:56:36,148 WARN L188 SmtUtils]: Spent 476.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 75 [2019-09-08 11:56:36,608 WARN L188 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 84 [2019-09-08 11:56:37,852 WARN L188 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 112 DAG size of output: 76 [2019-09-08 11:56:38,799 WARN L188 SmtUtils]: Spent 697.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 89 [2019-09-08 11:56:39,451 WARN L188 SmtUtils]: Spent 545.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 93 [2019-09-08 11:56:40,414 WARN L188 SmtUtils]: Spent 879.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 86 [2019-09-08 11:56:41,444 WARN L188 SmtUtils]: Spent 930.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 93 [2019-09-08 11:56:42,454 WARN L188 SmtUtils]: Spent 927.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 86 [2019-09-08 11:56:45,525 WARN L188 SmtUtils]: Spent 1.54 s on a formula simplification. DAG size of input: 101 DAG size of output: 74 [2019-09-08 11:56:45,845 WARN L188 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 81 [2019-09-08 11:56:46,380 WARN L188 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 82 [2019-09-08 11:56:47,185 WARN L188 SmtUtils]: Spent 562.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 94 [2019-09-08 11:56:48,626 WARN L188 SmtUtils]: Spent 1.23 s on a formula simplification. DAG size of input: 120 DAG size of output: 93 [2019-09-08 11:56:49,502 WARN L188 SmtUtils]: Spent 804.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 101 [2019-09-08 11:56:50,272 WARN L188 SmtUtils]: Spent 544.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 92 [2019-09-08 11:56:52,556 WARN L188 SmtUtils]: Spent 738.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 92 [2019-09-08 11:56:54,159 WARN L188 SmtUtils]: Spent 382.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 94 [2019-09-08 11:56:56,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:56:56,928 INFO L93 Difference]: Finished difference Result 29740 states and 37924 transitions. [2019-09-08 11:56:56,929 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2019-09-08 11:56:56,929 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 141 [2019-09-08 11:56:56,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:56:56,953 INFO L225 Difference]: With dead ends: 29740 [2019-09-08 11:56:56,953 INFO L226 Difference]: Without dead ends: 17166 [2019-09-08 11:56:56,965 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 131 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1023 ImplicationChecksByTransitivity, 38.2s TimeCoverageRelationStatistics Valid=950, Invalid=3742, Unknown=0, NotChecked=0, Total=4692 [2019-09-08 11:56:56,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17166 states. [2019-09-08 11:56:59,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17166 to 3326. [2019-09-08 11:56:59,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3326 states. [2019-09-08 11:56:59,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3326 states to 3326 states and 4164 transitions. [2019-09-08 11:56:59,222 INFO L78 Accepts]: Start accepts. Automaton has 3326 states and 4164 transitions. Word has length 141 [2019-09-08 11:56:59,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:56:59,222 INFO L475 AbstractCegarLoop]: Abstraction has 3326 states and 4164 transitions. [2019-09-08 11:56:59,222 INFO L476 AbstractCegarLoop]: Interpolant automaton has 25 states. [2019-09-08 11:56:59,222 INFO L276 IsEmpty]: Start isEmpty. Operand 3326 states and 4164 transitions. [2019-09-08 11:56:59,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2019-09-08 11:56:59,224 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:56:59,224 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 11:56:59,224 INFO L418 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:56:59,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:56:59,225 INFO L82 PathProgramCache]: Analyzing trace with hash 908598326, now seen corresponding path program 1 times [2019-09-08 11:56:59,225 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:56:59,225 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:56:59,225 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:56:59,226 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:56:59,226 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:56:59,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:56:59,556 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 13 proven. 93 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 11:56:59,557 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 11:56:59,557 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-08 11:56:59,578 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 11:56:59,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:56:59,678 INFO L256 TraceCheckSpWp]: Trace formula consists of 781 conjuncts, 22 conjunts are in the unsatisfiable core [2019-09-08 11:56:59,680 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 11:56:59,865 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:56:59,994 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:57:00,418 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 17 proven. 89 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (13)] Exception during sending of exit command (exit): Broken pipe [2019-09-08 11:57:00,426 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 11:57:00,426 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 20 [2019-09-08 11:57:00,427 INFO L454 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-09-08 11:57:00,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-09-08 11:57:00,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2019-09-08 11:57:00,431 INFO L87 Difference]: Start difference. First operand 3326 states and 4164 transitions. Second operand 20 states. [2019-09-08 11:57:00,768 WARN L188 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 43 [2019-09-08 11:57:01,179 WARN L188 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2019-09-08 11:57:01,522 WARN L188 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2019-09-08 11:57:01,955 WARN L188 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2019-09-08 11:57:02,297 WARN L188 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2019-09-08 11:57:02,550 WARN L188 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2019-09-08 11:57:03,015 WARN L188 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2019-09-08 11:57:03,239 WARN L188 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2019-09-08 11:57:03,456 WARN L188 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2019-09-08 11:57:03,810 WARN L188 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2019-09-08 11:57:04,344 WARN L188 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 61 [2019-09-08 11:57:05,404 WARN L188 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2019-09-08 11:57:05,753 WARN L188 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 65 [2019-09-08 11:57:06,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:57:06,831 INFO L93 Difference]: Finished difference Result 5499 states and 6899 transitions. [2019-09-08 11:57:06,831 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-09-08 11:57:06,831 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 141 [2019-09-08 11:57:06,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:57:06,836 INFO L225 Difference]: With dead ends: 5499 [2019-09-08 11:57:06,836 INFO L226 Difference]: Without dead ends: 3847 [2019-09-08 11:57:06,838 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 133 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=297, Invalid=893, Unknown=0, NotChecked=0, Total=1190 [2019-09-08 11:57:06,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3847 states. [2019-09-08 11:57:08,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3847 to 3326. [2019-09-08 11:57:08,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3326 states. [2019-09-08 11:57:08,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3326 states to 3326 states and 4140 transitions. [2019-09-08 11:57:08,541 INFO L78 Accepts]: Start accepts. Automaton has 3326 states and 4140 transitions. Word has length 141 [2019-09-08 11:57:08,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:57:08,542 INFO L475 AbstractCegarLoop]: Abstraction has 3326 states and 4140 transitions. [2019-09-08 11:57:08,542 INFO L476 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-09-08 11:57:08,542 INFO L276 IsEmpty]: Start isEmpty. Operand 3326 states and 4140 transitions. [2019-09-08 11:57:08,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2019-09-08 11:57:08,544 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:57:08,544 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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] [2019-09-08 11:57:08,544 INFO L418 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:57:08,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:57:08,544 INFO L82 PathProgramCache]: Analyzing trace with hash -707439243, now seen corresponding path program 1 times [2019-09-08 11:57:08,544 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:57:08,545 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:57:08,546 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:57:08,546 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:57:08,546 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:57:08,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:57:08,929 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 22 proven. 85 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 11:57:08,929 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 11:57:08,929 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 11:57:08,940 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:57:09,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:57:09,054 INFO L256 TraceCheckSpWp]: Trace formula consists of 783 conjuncts, 29 conjunts are in the unsatisfiable core [2019-09-08 11:57:09,056 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 11:57:09,331 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:57:09,424 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:57:09,493 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:57:09,855 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:57:10,357 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 40 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (14)] Exception during sending of exit command (exit): Broken pipe [2019-09-08 11:57:10,364 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 11:57:10,364 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2019-09-08 11:57:10,365 INFO L454 AbstractCegarLoop]: Interpolant automaton has 34 states [2019-09-08 11:57:10,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2019-09-08 11:57:10,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1011, Unknown=0, NotChecked=0, Total=1122 [2019-09-08 11:57:10,366 INFO L87 Difference]: Start difference. First operand 3326 states and 4140 transitions. Second operand 34 states. [2019-09-08 11:57:10,611 WARN L188 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2019-09-08 11:57:11,945 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 49 [2019-09-08 11:57:13,168 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 50 [2019-09-08 11:57:20,880 WARN L188 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 55 [2019-09-08 11:57:21,728 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2019-09-08 11:57:23,243 WARN L188 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 55 [2019-09-08 11:57:23,681 WARN L188 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 55 [2019-09-08 11:57:24,234 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2019-09-08 11:57:24,610 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 50 [2019-09-08 11:57:25,420 WARN L188 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 55 [2019-09-08 11:57:25,760 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2019-09-08 11:57:26,194 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 50 [2019-09-08 11:57:28,033 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 50 [2019-09-08 11:57:31,735 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 53 [2019-09-08 11:57:32,155 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 52 [2019-09-08 11:57:37,106 WARN L188 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 55 [2019-09-08 11:57:37,666 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 52 [2019-09-08 11:57:39,229 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2019-09-08 11:57:40,196 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 53 [2019-09-08 11:57:40,697 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2019-09-08 11:57:41,860 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 50 [2019-09-08 11:58:02,775 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2019-09-08 11:58:11,781 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 54 [2019-09-08 11:58:13,050 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 52 [2019-09-08 11:58:14,523 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2019-09-08 11:58:15,054 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 52 [2019-09-08 11:58:15,733 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 49