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.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-08 11:53:16,868 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-08 11:53:16,870 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-08 11:53:16,882 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-08 11:53:16,882 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-08 11:53:16,883 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-08 11:53:16,884 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-08 11:53:16,886 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-08 11:53:16,888 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-08 11:53:16,889 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-08 11:53:16,890 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-08 11:53:16,891 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-08 11:53:16,891 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-08 11:53:16,892 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-08 11:53:16,893 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-08 11:53:16,894 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-08 11:53:16,895 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-08 11:53:16,896 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-08 11:53:16,898 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-08 11:53:16,900 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-08 11:53:16,901 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-08 11:53:16,902 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-08 11:53:16,903 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-08 11:53:16,904 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-08 11:53:16,906 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-08 11:53:16,909 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-08 11:53:16,910 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-08 11:53:16,911 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-08 11:53:16,912 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-08 11:53:16,913 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-08 11:53:16,913 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-08 11:53:16,914 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-08 11:53:16,914 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-08 11:53:16,914 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-08 11:53:16,915 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-08 11:53:16,916 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-08 11:53:16,916 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 11:53:16,931 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-08 11:53:16,931 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-08 11:53:16,932 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-08 11:53:16,933 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-08 11:53:16,933 INFO L138 SettingsManager]: * Use SBE=true [2019-09-08 11:53:16,933 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-08 11:53:16,933 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-08 11:53:16,934 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-08 11:53:16,934 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-08 11:53:16,934 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-08 11:53:16,934 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-08 11:53:16,934 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-08 11:53:16,934 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-08 11:53:16,935 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-08 11:53:16,935 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-08 11:53:16,935 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-08 11:53:16,935 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-08 11:53:16,935 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-08 11:53:16,936 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-08 11:53:16,936 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-08 11:53:16,936 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-08 11:53:16,936 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-08 11:53:16,936 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-08 11:53:16,937 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-08 11:53:16,937 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-08 11:53:16,937 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-08 11:53:16,937 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-08 11:53:16,937 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-08 11:53:16,938 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-08 11:53:16,972 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-08 11:53:16,990 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-08 11:53:16,994 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-08 11:53:16,995 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-08 11:53:16,996 INFO L275 PluginConnector]: CDTParser initialized [2019-09-08 11:53:16,996 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2019-09-08 11:53:17,059 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df83d3823/61c14945fe2d453e8be74f1debb646bf/FLAGbe22a40f5 [2019-09-08 11:53:17,536 INFO L306 CDTParser]: Found 1 translation units. [2019-09-08 11:53:17,537 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2019-09-08 11:53:17,546 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df83d3823/61c14945fe2d453e8be74f1debb646bf/FLAGbe22a40f5 [2019-09-08 11:53:17,899 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df83d3823/61c14945fe2d453e8be74f1debb646bf [2019-09-08 11:53:17,910 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-08 11:53:17,911 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-08 11:53:17,913 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-08 11:53:17,913 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-08 11:53:17,916 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-08 11:53:17,917 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 11:53:17" (1/1) ... [2019-09-08 11:53:17,920 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30948aca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 11:53:17, skipping insertion in model container [2019-09-08 11:53:17,920 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 11:53:17" (1/1) ... [2019-09-08 11:53:17,926 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-08 11:53:17,968 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-08 11:53:18,226 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 11:53:18,239 INFO L188 MainTranslator]: Completed pre-run [2019-09-08 11:53:18,386 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 11:53:18,416 INFO L192 MainTranslator]: Completed translation [2019-09-08 11:53:18,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 11:53:18 WrapperNode [2019-09-08 11:53:18,417 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-08 11:53:18,418 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-08 11:53:18,418 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-08 11:53:18,418 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-08 11:53:18,429 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 11:53:18" (1/1) ... [2019-09-08 11:53:18,430 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 11:53:18" (1/1) ... [2019-09-08 11:53:18,438 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 11:53:18" (1/1) ... [2019-09-08 11:53:18,438 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 11:53:18" (1/1) ... [2019-09-08 11:53:18,452 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 11:53:18" (1/1) ... [2019-09-08 11:53:18,464 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 11:53:18" (1/1) ... [2019-09-08 11:53:18,467 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 11:53:18" (1/1) ... [2019-09-08 11:53:18,471 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-08 11:53:18,471 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-08 11:53:18,471 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-08 11:53:18,471 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-08 11:53:18,472 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 11:53:18" (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 11:53:18,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-08 11:53:18,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-08 11:53:18,523 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-08 11:53:18,524 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-08 11:53:18,524 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-09-08 11:53:18,525 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-09-08 11:53:18,525 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2019-09-08 11:53:18,525 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2019-09-08 11:53:18,525 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-08 11:53:18,525 INFO L130 BoogieDeclarations]: Found specification of procedure read [2019-09-08 11:53:18,525 INFO L130 BoogieDeclarations]: Found specification of procedure write [2019-09-08 11:53:18,525 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2019-09-08 11:53:18,526 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2019-09-08 11:53:18,526 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2019-09-08 11:53:18,526 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2019-09-08 11:53:18,526 INFO L130 BoogieDeclarations]: Found specification of procedure init [2019-09-08 11:53:18,526 INFO L130 BoogieDeclarations]: Found specification of procedure check [2019-09-08 11:53:18,527 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-08 11:53:18,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-08 11:53:18,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-08 11:53:19,082 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-08 11:53:19,082 INFO L283 CfgBuilder]: Removed 0 assume(true) statements. [2019-09-08 11:53:19,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 11:53:19 BoogieIcfgContainer [2019-09-08 11:53:19,085 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-08 11:53:19,086 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-08 11:53:19,086 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-08 11:53:19,089 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-08 11:53:19,091 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.09 11:53:17" (1/3) ... [2019-09-08 11:53:19,092 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48b816b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 11:53:19, skipping insertion in model container [2019-09-08 11:53:19,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 11:53:18" (2/3) ... [2019-09-08 11:53:19,093 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48b816b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 11:53:19, skipping insertion in model container [2019-09-08 11:53:19,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 11:53:19" (3/3) ... [2019-09-08 11:53:19,098 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.4.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2019-09-08 11:53:19,108 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-08 11:53:19,129 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-08 11:53:19,147 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-08 11:53:19,194 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-08 11:53:19,195 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-08 11:53:19,195 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-08 11:53:19,195 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-08 11:53:19,196 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-08 11:53:19,196 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-08 11:53:19,196 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-08 11:53:19,196 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-08 11:53:19,196 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-08 11:53:19,223 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states. [2019-09-08 11:53:19,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-09-08 11:53:19,232 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:53:19,233 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 11:53:19,235 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:53:19,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:53:19,240 INFO L82 PathProgramCache]: Analyzing trace with hash -1010910297, now seen corresponding path program 1 times [2019-09-08 11:53:19,241 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:53:19,242 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:53:19,298 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:53:19,298 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:53:19,298 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:53:19,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:53:19,679 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 11:53:19,681 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 11:53:19,683 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-08 11:53:19,688 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-08 11:53:19,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-08 11:53:19,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 11:53:19,706 INFO L87 Difference]: Start difference. First operand 86 states. Second operand 3 states. [2019-09-08 11:53:19,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:53:19,784 INFO L93 Difference]: Finished difference Result 190 states and 299 transitions. [2019-09-08 11:53:19,785 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-08 11:53:19,786 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 52 [2019-09-08 11:53:19,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:53:19,808 INFO L225 Difference]: With dead ends: 190 [2019-09-08 11:53:19,808 INFO L226 Difference]: Without dead ends: 126 [2019-09-08 11:53:19,816 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 11:53:19,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2019-09-08 11:53:19,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 124. [2019-09-08 11:53:19,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2019-09-08 11:53:19,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 179 transitions. [2019-09-08 11:53:19,931 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 179 transitions. Word has length 52 [2019-09-08 11:53:19,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:53:19,932 INFO L475 AbstractCegarLoop]: Abstraction has 124 states and 179 transitions. [2019-09-08 11:53:19,933 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-08 11:53:19,933 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 179 transitions. [2019-09-08 11:53:19,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-09-08 11:53:19,937 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:53:19,937 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 11:53:19,938 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:53:19,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:53:19,940 INFO L82 PathProgramCache]: Analyzing trace with hash 642580825, now seen corresponding path program 1 times [2019-09-08 11:53:19,940 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:53:19,940 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:53:19,946 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:53:19,947 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:53:19,947 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:53:20,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:53:20,157 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 11:53:20,157 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 11:53:20,158 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-08 11:53:20,160 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-08 11:53:20,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-08 11:53:20,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 11:53:20,161 INFO L87 Difference]: Start difference. First operand 124 states and 179 transitions. Second operand 3 states. [2019-09-08 11:53:20,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:53:20,228 INFO L93 Difference]: Finished difference Result 296 states and 451 transitions. [2019-09-08 11:53:20,231 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-08 11:53:20,231 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 53 [2019-09-08 11:53:20,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:53:20,236 INFO L225 Difference]: With dead ends: 296 [2019-09-08 11:53:20,238 INFO L226 Difference]: Without dead ends: 202 [2019-09-08 11:53:20,240 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 11:53:20,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2019-09-08 11:53:20,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 200. [2019-09-08 11:53:20,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2019-09-08 11:53:20,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 299 transitions. [2019-09-08 11:53:20,304 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 299 transitions. Word has length 53 [2019-09-08 11:53:20,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:53:20,304 INFO L475 AbstractCegarLoop]: Abstraction has 200 states and 299 transitions. [2019-09-08 11:53:20,305 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-08 11:53:20,305 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 299 transitions. [2019-09-08 11:53:20,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2019-09-08 11:53:20,309 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:53:20,309 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 11:53:20,309 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:53:20,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:53:20,310 INFO L82 PathProgramCache]: Analyzing trace with hash 228050420, now seen corresponding path program 1 times [2019-09-08 11:53:20,310 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:53:20,310 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:53:20,312 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:53:20,312 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:53:20,312 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:53:20,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:53:20,398 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 11:53:20,398 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 11:53:20,398 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-08 11:53:20,399 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-08 11:53:20,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-08 11:53:20,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 11:53:20,400 INFO L87 Difference]: Start difference. First operand 200 states and 299 transitions. Second operand 3 states. [2019-09-08 11:53:20,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:53:20,452 INFO L93 Difference]: Finished difference Result 508 states and 785 transitions. [2019-09-08 11:53:20,452 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-08 11:53:20,452 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 54 [2019-09-08 11:53:20,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:53:20,456 INFO L225 Difference]: With dead ends: 508 [2019-09-08 11:53:20,456 INFO L226 Difference]: Without dead ends: 338 [2019-09-08 11:53:20,458 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 11:53:20,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2019-09-08 11:53:20,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 336. [2019-09-08 11:53:20,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 336 states. [2019-09-08 11:53:20,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 511 transitions. [2019-09-08 11:53:20,490 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 511 transitions. Word has length 54 [2019-09-08 11:53:20,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:53:20,490 INFO L475 AbstractCegarLoop]: Abstraction has 336 states and 511 transitions. [2019-09-08 11:53:20,490 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-08 11:53:20,490 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 511 transitions. [2019-09-08 11:53:20,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2019-09-08 11:53:20,492 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:53:20,492 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 11:53:20,492 INFO L418 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:53:20,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:53:20,492 INFO L82 PathProgramCache]: Analyzing trace with hash -742349385, now seen corresponding path program 1 times [2019-09-08 11:53:20,493 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:53:20,493 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:53:20,497 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:53:20,498 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:53:20,498 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:53:20,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:53:20,629 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 11:53:20,629 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 11:53:20,629 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 11:53:20,630 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 11:53:20,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 11:53:20,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-08 11:53:20,631 INFO L87 Difference]: Start difference. First operand 336 states and 511 transitions. Second operand 5 states. [2019-09-08 11:53:20,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:53:20,774 INFO L93 Difference]: Finished difference Result 642 states and 992 transitions. [2019-09-08 11:53:20,774 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 11:53:20,775 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 55 [2019-09-08 11:53:20,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:53:20,779 INFO L225 Difference]: With dead ends: 642 [2019-09-08 11:53:20,779 INFO L226 Difference]: Without dead ends: 336 [2019-09-08 11:53:20,784 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 11:53:20,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2019-09-08 11:53:20,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 336. [2019-09-08 11:53:20,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 336 states. [2019-09-08 11:53:20,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 507 transitions. [2019-09-08 11:53:20,820 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 507 transitions. Word has length 55 [2019-09-08 11:53:20,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:53:20,821 INFO L475 AbstractCegarLoop]: Abstraction has 336 states and 507 transitions. [2019-09-08 11:53:20,821 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 11:53:20,821 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 507 transitions. [2019-09-08 11:53:20,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2019-09-08 11:53:20,825 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:53:20,826 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 11:53:20,826 INFO L418 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:53:20,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:53:20,827 INFO L82 PathProgramCache]: Analyzing trace with hash 1710587378, now seen corresponding path program 1 times [2019-09-08 11:53:20,827 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:53:20,827 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:53:20,828 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:53:20,829 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:53:20,829 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:53:20,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:53:20,921 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 11:53:20,922 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 11:53:20,922 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 11:53:20,922 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 11:53:20,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 11:53:20,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-08 11:53:20,923 INFO L87 Difference]: Start difference. First operand 336 states and 507 transitions. Second operand 5 states. [2019-09-08 11:53:21,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:53:21,073 INFO L93 Difference]: Finished difference Result 642 states and 984 transitions. [2019-09-08 11:53:21,073 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 11:53:21,073 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 55 [2019-09-08 11:53:21,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:53:21,077 INFO L225 Difference]: With dead ends: 642 [2019-09-08 11:53:21,077 INFO L226 Difference]: Without dead ends: 336 [2019-09-08 11:53:21,079 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 11:53:21,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2019-09-08 11:53:21,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 336. [2019-09-08 11:53:21,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 336 states. [2019-09-08 11:53:21,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 336 states to 336 states and 503 transitions. [2019-09-08 11:53:21,112 INFO L78 Accepts]: Start accepts. Automaton has 336 states and 503 transitions. Word has length 55 [2019-09-08 11:53:21,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:53:21,112 INFO L475 AbstractCegarLoop]: Abstraction has 336 states and 503 transitions. [2019-09-08 11:53:21,112 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 11:53:21,112 INFO L276 IsEmpty]: Start isEmpty. Operand 336 states and 503 transitions. [2019-09-08 11:53:21,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2019-09-08 11:53:21,120 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:53:21,120 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 11:53:21,120 INFO L418 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:53:21,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:53:21,121 INFO L82 PathProgramCache]: Analyzing trace with hash 263557783, now seen corresponding path program 1 times [2019-09-08 11:53:21,121 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:53:21,121 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:53:21,123 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:53:21,124 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:53:21,124 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:53:21,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:53:21,262 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 11:53:21,262 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 11:53:21,262 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-08 11:53:21,263 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-08 11:53:21,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-08 11:53:21,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-08 11:53:21,264 INFO L87 Difference]: Start difference. First operand 336 states and 503 transitions. Second operand 6 states. [2019-09-08 11:53:21,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:53:21,620 INFO L93 Difference]: Finished difference Result 2478 states and 3814 transitions. [2019-09-08 11:53:21,621 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-08 11:53:21,622 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 55 [2019-09-08 11:53:21,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:53:21,635 INFO L225 Difference]: With dead ends: 2478 [2019-09-08 11:53:21,635 INFO L226 Difference]: Without dead ends: 2172 [2019-09-08 11:53:21,639 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2019-09-08 11:53:21,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2172 states. [2019-09-08 11:53:21,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2172 to 640. [2019-09-08 11:53:21,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 640 states. [2019-09-08 11:53:21,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 640 states to 640 states and 959 transitions. [2019-09-08 11:53:21,716 INFO L78 Accepts]: Start accepts. Automaton has 640 states and 959 transitions. Word has length 55 [2019-09-08 11:53:21,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:53:21,717 INFO L475 AbstractCegarLoop]: Abstraction has 640 states and 959 transitions. [2019-09-08 11:53:21,717 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-08 11:53:21,717 INFO L276 IsEmpty]: Start isEmpty. Operand 640 states and 959 transitions. [2019-09-08 11:53:21,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-09-08 11:53:21,719 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:53:21,719 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 11:53:21,720 INFO L418 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:53:21,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:53:21,720 INFO L82 PathProgramCache]: Analyzing trace with hash -1017233934, now seen corresponding path program 1 times [2019-09-08 11:53:21,724 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:53:21,724 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:53:21,728 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:53:21,728 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:53:21,734 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:53:21,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:53:21,824 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 11:53:21,824 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 11:53:21,825 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-08 11:53:21,825 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-08 11:53:21,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-08 11:53:21,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 11:53:21,826 INFO L87 Difference]: Start difference. First operand 640 states and 959 transitions. Second operand 3 states. [2019-09-08 11:53:21,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:53:21,965 INFO L93 Difference]: Finished difference Result 1780 states and 2681 transitions. [2019-09-08 11:53:21,965 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-08 11:53:21,966 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 57 [2019-09-08 11:53:21,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:53:21,972 INFO L225 Difference]: With dead ends: 1780 [2019-09-08 11:53:21,972 INFO L226 Difference]: Without dead ends: 1170 [2019-09-08 11:53:21,974 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 11:53:21,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1170 states. [2019-09-08 11:53:22,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1170 to 1152. [2019-09-08 11:53:22,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1152 states. [2019-09-08 11:53:22,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1152 states to 1152 states and 1687 transitions. [2019-09-08 11:53:22,077 INFO L78 Accepts]: Start accepts. Automaton has 1152 states and 1687 transitions. Word has length 57 [2019-09-08 11:53:22,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:53:22,078 INFO L475 AbstractCegarLoop]: Abstraction has 1152 states and 1687 transitions. [2019-09-08 11:53:22,078 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-08 11:53:22,078 INFO L276 IsEmpty]: Start isEmpty. Operand 1152 states and 1687 transitions. [2019-09-08 11:53:22,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-09-08 11:53:22,079 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:53:22,079 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 11:53:22,080 INFO L418 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:53:22,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:53:22,080 INFO L82 PathProgramCache]: Analyzing trace with hash -997184591, now seen corresponding path program 1 times [2019-09-08 11:53:22,080 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:53:22,080 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:53:22,082 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:53:22,082 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:53:22,082 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:53:22,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:53:22,296 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 11:53:22,296 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 11:53:22,296 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-08 11:53:22,298 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-08 11:53:22,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-08 11:53:22,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-09-08 11:53:22,299 INFO L87 Difference]: Start difference. First operand 1152 states and 1687 transitions. Second operand 6 states. [2019-09-08 11:53:22,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:53:22,626 INFO L93 Difference]: Finished difference Result 3392 states and 5019 transitions. [2019-09-08 11:53:22,626 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-08 11:53:22,626 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 57 [2019-09-08 11:53:22,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:53:22,638 INFO L225 Difference]: With dead ends: 3392 [2019-09-08 11:53:22,638 INFO L226 Difference]: Without dead ends: 2270 [2019-09-08 11:53:22,641 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 11:53:22,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2270 states. [2019-09-08 11:53:22,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2270 to 1152. [2019-09-08 11:53:22,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1152 states. [2019-09-08 11:53:22,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1152 states to 1152 states and 1671 transitions. [2019-09-08 11:53:22,767 INFO L78 Accepts]: Start accepts. Automaton has 1152 states and 1671 transitions. Word has length 57 [2019-09-08 11:53:22,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:53:22,768 INFO L475 AbstractCegarLoop]: Abstraction has 1152 states and 1671 transitions. [2019-09-08 11:53:22,768 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-08 11:53:22,768 INFO L276 IsEmpty]: Start isEmpty. Operand 1152 states and 1671 transitions. [2019-09-08 11:53:22,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2019-09-08 11:53:22,769 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:53:22,769 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 11:53:22,769 INFO L418 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:53:22,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:53:22,770 INFO L82 PathProgramCache]: Analyzing trace with hash 620001396, now seen corresponding path program 1 times [2019-09-08 11:53:22,770 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:53:22,770 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:53:22,771 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:53:22,771 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:53:22,771 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:53:22,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:53:22,819 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 11:53:22,819 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 11:53:22,820 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-08 11:53:22,820 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-08 11:53:22,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-08 11:53:22,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 11:53:22,821 INFO L87 Difference]: Start difference. First operand 1152 states and 1671 transitions. Second operand 3 states. [2019-09-08 11:53:22,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:53:22,978 INFO L93 Difference]: Finished difference Result 2215 states and 3261 transitions. [2019-09-08 11:53:22,978 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-08 11:53:22,979 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 58 [2019-09-08 11:53:22,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:53:22,988 INFO L225 Difference]: With dead ends: 2215 [2019-09-08 11:53:22,988 INFO L226 Difference]: Without dead ends: 1604 [2019-09-08 11:53:22,991 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 11:53:22,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2019-09-08 11:53:23,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1602. [2019-09-08 11:53:23,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1602 states. [2019-09-08 11:53:23,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1602 states to 1602 states and 2321 transitions. [2019-09-08 11:53:23,190 INFO L78 Accepts]: Start accepts. Automaton has 1602 states and 2321 transitions. Word has length 58 [2019-09-08 11:53:23,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:53:23,190 INFO L475 AbstractCegarLoop]: Abstraction has 1602 states and 2321 transitions. [2019-09-08 11:53:23,190 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-08 11:53:23,191 INFO L276 IsEmpty]: Start isEmpty. Operand 1602 states and 2321 transitions. [2019-09-08 11:53:23,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2019-09-08 11:53:23,192 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:53:23,192 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 11:53:23,192 INFO L418 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:53:23,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:53:23,193 INFO L82 PathProgramCache]: Analyzing trace with hash -849860640, now seen corresponding path program 1 times [2019-09-08 11:53:23,193 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:53:23,193 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:53:23,198 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:53:23,198 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:53:23,198 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:53:23,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:53:23,326 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 11:53:23,327 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 11:53:23,327 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 11:53:23,327 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 11:53:23,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 11:53:23,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-08 11:53:23,328 INFO L87 Difference]: Start difference. First operand 1602 states and 2321 transitions. Second operand 5 states. [2019-09-08 11:53:23,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:53:23,652 INFO L93 Difference]: Finished difference Result 3024 states and 4372 transitions. [2019-09-08 11:53:23,653 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-08 11:53:23,653 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 58 [2019-09-08 11:53:23,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:53:23,669 INFO L225 Difference]: With dead ends: 3024 [2019-09-08 11:53:23,694 INFO L226 Difference]: Without dead ends: 3022 [2019-09-08 11:53:23,696 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 11:53:23,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3022 states. [2019-09-08 11:53:23,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3022 to 1682. [2019-09-08 11:53:23,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1682 states. [2019-09-08 11:53:23,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1682 states to 1682 states and 2393 transitions. [2019-09-08 11:53:23,882 INFO L78 Accepts]: Start accepts. Automaton has 1682 states and 2393 transitions. Word has length 58 [2019-09-08 11:53:23,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:53:23,883 INFO L475 AbstractCegarLoop]: Abstraction has 1682 states and 2393 transitions. [2019-09-08 11:53:23,883 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 11:53:23,883 INFO L276 IsEmpty]: Start isEmpty. Operand 1682 states and 2393 transitions. [2019-09-08 11:53:23,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2019-09-08 11:53:23,885 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:53:23,885 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 11:53:23,886 INFO L418 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:53:23,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:53:23,886 INFO L82 PathProgramCache]: Analyzing trace with hash -911018282, now seen corresponding path program 1 times [2019-09-08 11:53:23,886 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:53:23,886 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:53:23,888 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:53:23,888 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:53:23,888 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:53:23,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:53:24,009 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 11:53:24,009 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 11:53:24,009 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-08 11:53:24,010 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-08 11:53:24,010 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-08 11:53:24,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-08 11:53:24,010 INFO L87 Difference]: Start difference. First operand 1682 states and 2393 transitions. Second operand 6 states. [2019-09-08 11:53:24,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:53:24,555 INFO L93 Difference]: Finished difference Result 4748 states and 6910 transitions. [2019-09-08 11:53:24,555 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-08 11:53:24,556 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 81 [2019-09-08 11:53:24,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:53:24,574 INFO L225 Difference]: With dead ends: 4748 [2019-09-08 11:53:24,574 INFO L226 Difference]: Without dead ends: 3914 [2019-09-08 11:53:24,577 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 11:53:24,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3914 states. [2019-09-08 11:53:24,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3914 to 2514. [2019-09-08 11:53:24,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2514 states. [2019-09-08 11:53:24,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2514 states to 2514 states and 3593 transitions. [2019-09-08 11:53:24,845 INFO L78 Accepts]: Start accepts. Automaton has 2514 states and 3593 transitions. Word has length 81 [2019-09-08 11:53:24,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:53:24,846 INFO L475 AbstractCegarLoop]: Abstraction has 2514 states and 3593 transitions. [2019-09-08 11:53:24,846 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-08 11:53:24,846 INFO L276 IsEmpty]: Start isEmpty. Operand 2514 states and 3593 transitions. [2019-09-08 11:53:24,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2019-09-08 11:53:24,848 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:53:24,848 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 11:53:24,849 INFO L418 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:53:24,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:53:24,849 INFO L82 PathProgramCache]: Analyzing trace with hash -934763504, now seen corresponding path program 1 times [2019-09-08 11:53:24,849 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:53:24,849 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:53:24,851 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:53:24,851 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:53:24,851 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:53:24,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:53:24,924 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 11:53:24,924 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 11:53:24,924 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) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 11:53:24,972 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:53:25,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:53:25,089 INFO L256 TraceCheckSpWp]: Trace formula consists of 603 conjuncts, 5 conjunts are in the unsatisfiable core [2019-09-08 11:53:25,101 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 11:53:25,203 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 11:53:25,210 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-08 11:53:25,210 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2019-09-08 11:53:25,212 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-08 11:53:25,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-08 11:53:25,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-09-08 11:53:25,212 INFO L87 Difference]: Start difference. First operand 2514 states and 3593 transitions. Second operand 9 states. [2019-09-08 11:53:27,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:53:27,087 INFO L93 Difference]: Finished difference Result 10800 states and 15820 transitions. [2019-09-08 11:53:27,087 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-09-08 11:53:27,087 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 81 [2019-09-08 11:53:27,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:53:27,151 INFO L225 Difference]: With dead ends: 10800 [2019-09-08 11:53:27,151 INFO L226 Difference]: Without dead ends: 9966 [2019-09-08 11:53:27,156 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=123, Invalid=219, Unknown=0, NotChecked=0, Total=342 [2019-09-08 11:53:27,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9966 states. [2019-09-08 11:53:27,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9966 to 4962. [2019-09-08 11:53:27,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4962 states. [2019-09-08 11:53:27,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4962 states to 4962 states and 7169 transitions. [2019-09-08 11:53:27,804 INFO L78 Accepts]: Start accepts. Automaton has 4962 states and 7169 transitions. Word has length 81 [2019-09-08 11:53:27,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:53:27,804 INFO L475 AbstractCegarLoop]: Abstraction has 4962 states and 7169 transitions. [2019-09-08 11:53:27,804 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-08 11:53:27,805 INFO L276 IsEmpty]: Start isEmpty. Operand 4962 states and 7169 transitions. [2019-09-08 11:53:27,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2019-09-08 11:53:27,807 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:53:27,807 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 11:53:27,808 INFO L418 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:53:27,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:53:27,808 INFO L82 PathProgramCache]: Analyzing trace with hash -1307289398, now seen corresponding path program 1 times [2019-09-08 11:53:27,808 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:53:27,809 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:53:27,810 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:53:27,810 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:53:27,810 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:53:27,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:53:27,903 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 11:53:27,904 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 11:53:27,904 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) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 11:53:27,925 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:53:28,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:53:28,062 INFO L256 TraceCheckSpWp]: Trace formula consists of 603 conjuncts, 5 conjunts are in the unsatisfiable core [2019-09-08 11:53:28,072 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 11:53:28,144 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (3)] Exception during sending of exit command (exit): Broken pipe [2019-09-08 11:53:28,156 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-08 11:53:28,157 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2019-09-08 11:53:28,157 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-08 11:53:28,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-08 11:53:28,158 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2019-09-08 11:53:28,158 INFO L87 Difference]: Start difference. First operand 4962 states and 7169 transitions. Second operand 9 states. [2019-09-08 11:53:30,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:53:30,251 INFO L93 Difference]: Finished difference Result 23462 states and 34463 transitions. [2019-09-08 11:53:30,251 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-09-08 11:53:30,251 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 81 [2019-09-08 11:53:30,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:53:30,296 INFO L225 Difference]: With dead ends: 23462 [2019-09-08 11:53:30,297 INFO L226 Difference]: Without dead ends: 19868 [2019-09-08 11:53:30,313 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 11:53:30,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19868 states. [2019-09-08 11:53:31,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19868 to 9050. [2019-09-08 11:53:31,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9050 states. [2019-09-08 11:53:31,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9050 states to 9050 states and 13089 transitions. [2019-09-08 11:53:31,449 INFO L78 Accepts]: Start accepts. Automaton has 9050 states and 13089 transitions. Word has length 81 [2019-09-08 11:53:31,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:53:31,450 INFO L475 AbstractCegarLoop]: Abstraction has 9050 states and 13089 transitions. [2019-09-08 11:53:31,450 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-08 11:53:31,450 INFO L276 IsEmpty]: Start isEmpty. Operand 9050 states and 13089 transitions. [2019-09-08 11:53:31,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2019-09-08 11:53:31,453 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:53:31,453 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 11:53:31,454 INFO L418 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:53:31,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:53:31,454 INFO L82 PathProgramCache]: Analyzing trace with hash 1399365996, now seen corresponding path program 1 times [2019-09-08 11:53:31,454 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:53:31,454 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:53:31,456 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:53:31,456 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:53:31,456 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:53:31,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:53:31,561 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 11:53:31,561 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 11:53:31,562 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) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 11:53:31,590 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:53:31,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:53:31,757 INFO L256 TraceCheckSpWp]: Trace formula consists of 604 conjuncts, 5 conjunts are in the unsatisfiable core [2019-09-08 11:53:31,773 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 11:53:31,839 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 11:53:31,843 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-08 11:53:31,844 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2019-09-08 11:53:31,844 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-08 11:53:31,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-08 11:53:31,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-09-08 11:53:31,847 INFO L87 Difference]: Start difference. First operand 9050 states and 13089 transitions. Second operand 9 states. [2019-09-08 11:53:33,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:53:33,708 INFO L93 Difference]: Finished difference Result 19960 states and 29172 transitions. [2019-09-08 11:53:33,708 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-09-08 11:53:33,708 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 82 [2019-09-08 11:53:33,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:53:33,739 INFO L225 Difference]: With dead ends: 19960 [2019-09-08 11:53:33,739 INFO L226 Difference]: Without dead ends: 15478 [2019-09-08 11:53:33,753 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 11:53:33,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15478 states. [2019-09-08 11:53:34,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15478 to 10978. [2019-09-08 11:53:34,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10978 states. [2019-09-08 11:53:34,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10978 states to 10978 states and 15913 transitions. [2019-09-08 11:53:34,811 INFO L78 Accepts]: Start accepts. Automaton has 10978 states and 15913 transitions. Word has length 82 [2019-09-08 11:53:34,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:53:34,811 INFO L475 AbstractCegarLoop]: Abstraction has 10978 states and 15913 transitions. [2019-09-08 11:53:34,811 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-08 11:53:34,811 INFO L276 IsEmpty]: Start isEmpty. Operand 10978 states and 15913 transitions. [2019-09-08 11:53:34,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2019-09-08 11:53:34,815 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:53:34,815 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 11:53:34,815 INFO L418 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:53:34,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:53:34,815 INFO L82 PathProgramCache]: Analyzing trace with hash -1236566682, now seen corresponding path program 1 times [2019-09-08 11:53:34,816 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:53:34,816 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:53:34,817 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:53:34,817 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:53:34,817 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:53:34,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:53:35,006 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 11:53:35,007 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 11:53:35,007 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 11:53:35,027 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:53:35,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:53:35,113 INFO L256 TraceCheckSpWp]: Trace formula consists of 603 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-08 11:53:35,116 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 11:53:35,220 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 11:53:35,229 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 11:53:35,230 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 4] total 12 [2019-09-08 11:53:35,231 INFO L454 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-09-08 11:53:35,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-09-08 11:53:35,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2019-09-08 11:53:35,232 INFO L87 Difference]: Start difference. First operand 10978 states and 15913 transitions. Second operand 12 states. [2019-09-08 11:53:36,043 WARN L188 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 32 [2019-09-08 11:53:50,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:53:50,592 INFO L93 Difference]: Finished difference Result 112178 states and 160937 transitions. [2019-09-08 11:53:50,592 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2019-09-08 11:53:50,592 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 83 [2019-09-08 11:53:50,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:53:50,758 INFO L225 Difference]: With dead ends: 112178 [2019-09-08 11:53:50,758 INFO L226 Difference]: Without dead ends: 101232 [2019-09-08 11:53:50,801 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2831 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=1361, Invalid=5949, Unknown=0, NotChecked=0, Total=7310 [2019-09-08 11:53:50,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101232 states. [2019-09-08 11:53:56,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101232 to 39970. [2019-09-08 11:53:56,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39970 states. [2019-09-08 11:53:56,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39970 states to 39970 states and 56285 transitions. [2019-09-08 11:53:56,469 INFO L78 Accepts]: Start accepts. Automaton has 39970 states and 56285 transitions. Word has length 83 [2019-09-08 11:53:56,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:53:56,469 INFO L475 AbstractCegarLoop]: Abstraction has 39970 states and 56285 transitions. [2019-09-08 11:53:56,470 INFO L476 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-09-08 11:53:56,470 INFO L276 IsEmpty]: Start isEmpty. Operand 39970 states and 56285 transitions. [2019-09-08 11:53:56,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2019-09-08 11:53:56,473 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:53:56,474 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 11:53:56,474 INFO L418 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:53:56,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:53:56,474 INFO L82 PathProgramCache]: Analyzing trace with hash -982227461, now seen corresponding path program 1 times [2019-09-08 11:53:56,474 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:53:56,475 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:53:56,479 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:53:56,479 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:53:56,479 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:53:56,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:53:56,537 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 11:53:56,538 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 11:53:56,538 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-08 11:53:56,538 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-08 11:53:56,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-08 11:53:56,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 11:53:56,539 INFO L87 Difference]: Start difference. First operand 39970 states and 56285 transitions. Second operand 3 states. [2019-09-08 11:53:59,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:53:59,429 INFO L93 Difference]: Finished difference Result 64822 states and 91651 transitions. [2019-09-08 11:53:59,429 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-08 11:53:59,429 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 83 [2019-09-08 11:53:59,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:53:59,460 INFO L225 Difference]: With dead ends: 64822 [2019-09-08 11:53:59,460 INFO L226 Difference]: Without dead ends: 24884 [2019-09-08 11:53:59,519 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 11:53:59,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24884 states. [2019-09-08 11:54:02,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24884 to 24882. [2019-09-08 11:54:02,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24882 states. [2019-09-08 11:54:02,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24882 states to 24882 states and 34891 transitions. [2019-09-08 11:54:02,258 INFO L78 Accepts]: Start accepts. Automaton has 24882 states and 34891 transitions. Word has length 83 [2019-09-08 11:54:02,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:54:02,258 INFO L475 AbstractCegarLoop]: Abstraction has 24882 states and 34891 transitions. [2019-09-08 11:54:02,258 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-08 11:54:02,258 INFO L276 IsEmpty]: Start isEmpty. Operand 24882 states and 34891 transitions. [2019-09-08 11:54:02,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2019-09-08 11:54:02,260 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:54:02,261 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 11:54:02,261 INFO L418 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:54:02,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:54:02,261 INFO L82 PathProgramCache]: Analyzing trace with hash 1262120977, now seen corresponding path program 1 times [2019-09-08 11:54:02,261 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:54:02,262 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:54:02,263 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:54:02,263 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:54:02,263 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:54:02,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:54:02,450 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 11:54:02,450 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 11:54:02,450 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) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 11:54:02,465 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:54:02,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:54:02,568 INFO L256 TraceCheckSpWp]: Trace formula consists of 608 conjuncts, 36 conjunts are in the unsatisfiable core [2019-09-08 11:54:02,571 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 11:54:03,025 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:54:03,392 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (6)] Exception during sending of exit command (exit): Broken pipe [2019-09-08 11:54:03,398 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 11:54:03,399 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 16] total 24 [2019-09-08 11:54:03,399 INFO L454 AbstractCegarLoop]: Interpolant automaton has 24 states [2019-09-08 11:54:03,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2019-09-08 11:54:03,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=489, Unknown=0, NotChecked=0, Total=552 [2019-09-08 11:54:03,400 INFO L87 Difference]: Start difference. First operand 24882 states and 34891 transitions. Second operand 24 states. [2019-09-08 11:54:05,668 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2019-09-08 11:54:05,867 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2019-09-08 11:54:06,138 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2019-09-08 11:54:06,269 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2019-09-08 11:54:06,781 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2019-09-08 11:54:10,244 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 57 [2019-09-08 11:54:10,524 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 51 [2019-09-08 11:54:11,036 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 40 [2019-09-08 11:54:12,047 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 54 [2019-09-08 11:54:12,696 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 57 [2019-09-08 11:54:24,011 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 38 [2019-09-08 11:54:25,015 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 49 [2019-09-08 11:54:28,078 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2019-09-08 11:54:28,299 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2019-09-08 11:54:28,680 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2019-09-08 11:54:28,940 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2019-09-08 11:54:29,110 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2019-09-08 11:54:29,474 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2019-09-08 11:54:30,233 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2019-09-08 11:54:30,530 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2019-09-08 11:54:30,788 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2019-09-08 11:54:30,935 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 49 [2019-09-08 11:54:31,170 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2019-09-08 11:54:31,314 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 49 [2019-09-08 11:54:31,488 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2019-09-08 11:54:31,978 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2019-09-08 11:54:32,241 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 48 [2019-09-08 11:54:34,689 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2019-09-08 11:54:35,129 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2019-09-08 11:54:36,075 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 54 [2019-09-08 11:54:36,893 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 57 [2019-09-08 11:54:41,662 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2019-09-08 11:54:41,812 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2019-09-08 11:54:42,574 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 60 [2019-09-08 11:55:05,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:55:05,402 INFO L93 Difference]: Finished difference Result 263224 states and 365699 transitions. [2019-09-08 11:55:05,403 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 256 states. [2019-09-08 11:55:05,403 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 84 [2019-09-08 11:55:05,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:55:05,934 INFO L225 Difference]: With dead ends: 263224 [2019-09-08 11:55:05,934 INFO L226 Difference]: Without dead ends: 238411 [2019-09-08 11:55:05,995 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 348 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 276 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32696 ImplicationChecksByTransitivity, 24.0s TimeCoverageRelationStatistics Valid=9988, Invalid=67018, Unknown=0, NotChecked=0, Total=77006 [2019-09-08 11:55:06,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238411 states. [2019-09-08 11:55:20,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238411 to 99177. [2019-09-08 11:55:20,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99177 states. [2019-09-08 11:55:20,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99177 states to 99177 states and 137776 transitions. [2019-09-08 11:55:20,956 INFO L78 Accepts]: Start accepts. Automaton has 99177 states and 137776 transitions. Word has length 84 [2019-09-08 11:55:20,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:55:20,957 INFO L475 AbstractCegarLoop]: Abstraction has 99177 states and 137776 transitions. [2019-09-08 11:55:20,957 INFO L476 AbstractCegarLoop]: Interpolant automaton has 24 states. [2019-09-08 11:55:20,957 INFO L276 IsEmpty]: Start isEmpty. Operand 99177 states and 137776 transitions. [2019-09-08 11:55:20,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2019-09-08 11:55:20,961 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:55:20,961 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 11:55:20,961 INFO L418 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:55:20,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:55:20,962 INFO L82 PathProgramCache]: Analyzing trace with hash 2085307495, now seen corresponding path program 1 times [2019-09-08 11:55:20,962 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:55:20,962 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:55:20,963 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:55:20,963 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:55:20,964 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:55:20,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:55:21,165 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 11:55:21,165 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 11:55:21,165 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 11:55:21,182 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:55:21,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:55:21,278 INFO L256 TraceCheckSpWp]: Trace formula consists of 610 conjuncts, 16 conjunts are in the unsatisfiable core [2019-09-08 11:55:21,281 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 11:55:21,372 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:55:21,559 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 11:55:21,568 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 11:55:21,569 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2019-09-08 11:55:21,569 INFO L454 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-09-08 11:55:21,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-09-08 11:55:21,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2019-09-08 11:55:21,570 INFO L87 Difference]: Start difference. First operand 99177 states and 137776 transitions. Second operand 17 states. [2019-09-08 11:56:42,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:56:42,372 INFO L93 Difference]: Finished difference Result 606015 states and 834194 transitions. [2019-09-08 11:56:42,372 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2019-09-08 11:56:42,372 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 85 [2019-09-08 11:56:42,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:56:43,379 INFO L225 Difference]: With dead ends: 606015 [2019-09-08 11:56:43,380 INFO L226 Difference]: Without dead ends: 518667 [2019-09-08 11:56:43,541 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 11:56:44,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518667 states. [2019-09-08 11:57:23,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518667 to 232363. [2019-09-08 11:57:23,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232363 states. [2019-09-08 11:57:23,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232363 states to 232363 states and 321966 transitions. [2019-09-08 11:57:23,788 INFO L78 Accepts]: Start accepts. Automaton has 232363 states and 321966 transitions. Word has length 85 [2019-09-08 11:57:23,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:57:23,788 INFO L475 AbstractCegarLoop]: Abstraction has 232363 states and 321966 transitions. [2019-09-08 11:57:23,788 INFO L476 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-09-08 11:57:23,788 INFO L276 IsEmpty]: Start isEmpty. Operand 232363 states and 321966 transitions. [2019-09-08 11:57:23,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2019-09-08 11:57:23,793 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:57:23,793 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 11:57:23,793 INFO L418 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:57:23,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:57:23,794 INFO L82 PathProgramCache]: Analyzing trace with hash 1833088786, now seen corresponding path program 1 times [2019-09-08 11:57:23,794 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:57:23,794 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:57:23,795 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:57:23,795 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:57:23,795 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:57:23,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:57:23,837 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 11:57:23,837 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 11:57:23,837 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-08 11:57:23,837 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-08 11:57:23,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-08 11:57:23,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 11:57:23,838 INFO L87 Difference]: Start difference. First operand 232363 states and 321966 transitions. Second operand 3 states. [2019-09-08 11:57:54,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:57:54,633 INFO L93 Difference]: Finished difference Result 411533 states and 570756 transitions. [2019-09-08 11:57:54,634 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-08 11:57:54,634 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 85 [2019-09-08 11:57:54,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:57:54,861 INFO L225 Difference]: With dead ends: 411533 [2019-09-08 11:57:54,861 INFO L226 Difference]: Without dead ends: 179710 [2019-09-08 11:57:54,984 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 11:57:55,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179710 states. [2019-09-08 11:58:25,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179710 to 179710. [2019-09-08 11:58:25,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179710 states. [2019-09-08 11:58:25,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179710 states to 179710 states and 247485 transitions. [2019-09-08 11:58:25,984 INFO L78 Accepts]: Start accepts. Automaton has 179710 states and 247485 transitions. Word has length 85 [2019-09-08 11:58:25,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:58:25,984 INFO L475 AbstractCegarLoop]: Abstraction has 179710 states and 247485 transitions. [2019-09-08 11:58:25,984 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-08 11:58:25,984 INFO L276 IsEmpty]: Start isEmpty. Operand 179710 states and 247485 transitions. [2019-09-08 11:58:25,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2019-09-08 11:58:25,988 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:58:25,988 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 11:58:25,989 INFO L418 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:58:25,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:58:25,989 INFO L82 PathProgramCache]: Analyzing trace with hash 131295856, now seen corresponding path program 1 times [2019-09-08 11:58:25,989 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:58:25,989 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:58:25,990 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:58:25,990 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:58:25,990 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:58:26,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:58:26,025 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 11:58:26,026 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 11:58:26,026 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-08 11:58:26,026 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-08 11:58:26,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-08 11:58:26,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 11:58:26,027 INFO L87 Difference]: Start difference. First operand 179710 states and 247485 transitions. Second operand 3 states. [2019-09-08 11:58:52,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:58:52,185 INFO L93 Difference]: Finished difference Result 328654 states and 453510 transitions. [2019-09-08 11:58:52,186 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-08 11:58:52,186 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 86 [2019-09-08 11:58:52,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:58:52,367 INFO L225 Difference]: With dead ends: 328654 [2019-09-08 11:58:52,367 INFO L226 Difference]: Without dead ends: 149469 [2019-09-08 11:58:52,464 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 11:58:52,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149469 states. [2019-09-08 11:59:13,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149469 to 149469. [2019-09-08 11:59:13,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149469 states. [2019-09-08 11:59:14,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149469 states to 149469 states and 203910 transitions. [2019-09-08 11:59:14,079 INFO L78 Accepts]: Start accepts. Automaton has 149469 states and 203910 transitions. Word has length 86 [2019-09-08 11:59:14,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:59:14,079 INFO L475 AbstractCegarLoop]: Abstraction has 149469 states and 203910 transitions. [2019-09-08 11:59:14,079 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-08 11:59:14,079 INFO L276 IsEmpty]: Start isEmpty. Operand 149469 states and 203910 transitions. [2019-09-08 11:59:14,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2019-09-08 11:59:14,084 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:59:14,084 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 11:59:14,084 INFO L418 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:59:14,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:59:14,084 INFO L82 PathProgramCache]: Analyzing trace with hash 1788120362, now seen corresponding path program 1 times [2019-09-08 11:59:14,085 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:59:14,085 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:59:14,086 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:59:14,086 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:59:14,086 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:59:14,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:59:14,138 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 11:59:14,139 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 11:59:14,139 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-08 11:59:14,139 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-08 11:59:14,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-08 11:59:14,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 11:59:14,140 INFO L87 Difference]: Start difference. First operand 149469 states and 203910 transitions. Second operand 3 states. [2019-09-08 11:59:29,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 11:59:29,269 INFO L93 Difference]: Finished difference Result 216923 states and 297144 transitions. [2019-09-08 11:59:29,269 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-08 11:59:29,269 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 86 [2019-09-08 11:59:29,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 11:59:29,357 INFO L225 Difference]: With dead ends: 216923 [2019-09-08 11:59:29,358 INFO L226 Difference]: Without dead ends: 76322 [2019-09-08 11:59:29,429 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 11:59:29,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76322 states. [2019-09-08 11:59:39,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76322 to 76320. [2019-09-08 11:59:39,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76320 states. [2019-09-08 11:59:40,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76320 states to 76320 states and 102541 transitions. [2019-09-08 11:59:40,034 INFO L78 Accepts]: Start accepts. Automaton has 76320 states and 102541 transitions. Word has length 86 [2019-09-08 11:59:40,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 11:59:40,034 INFO L475 AbstractCegarLoop]: Abstraction has 76320 states and 102541 transitions. [2019-09-08 11:59:40,035 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-08 11:59:40,035 INFO L276 IsEmpty]: Start isEmpty. Operand 76320 states and 102541 transitions. [2019-09-08 11:59:40,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2019-09-08 11:59:40,037 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 11:59:40,037 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 11:59:40,037 INFO L418 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 11:59:40,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 11:59:40,038 INFO L82 PathProgramCache]: Analyzing trace with hash -1683522070, now seen corresponding path program 1 times [2019-09-08 11:59:40,038 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 11:59:40,038 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 11:59:40,038 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:59:40,039 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:59:40,039 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 11:59:40,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:59:41,846 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 11:59:41,846 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 11:59:41,847 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 11:59:41,858 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 11:59:41,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 11:59:41,951 INFO L256 TraceCheckSpWp]: Trace formula consists of 612 conjuncts, 24 conjunts are in the unsatisfiable core [2019-09-08 11:59:41,954 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 11:59:42,216 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 11:59:43,355 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 11:59:43,359 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 11:59:43,359 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 12] total 35 [2019-09-08 11:59:43,360 INFO L454 AbstractCegarLoop]: Interpolant automaton has 35 states [2019-09-08 11:59:43,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2019-09-08 11:59:43,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=1095, Unknown=0, NotChecked=0, Total=1190 [2019-09-08 11:59:43,361 INFO L87 Difference]: Start difference. First operand 76320 states and 102541 transitions. Second operand 35 states. [2019-09-08 11:59:43,535 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 46 [2019-09-08 11:59:44,489 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2019-09-08 11:59:44,672 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 46 [2019-09-08 11:59:44,969 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 48 [2019-09-08 11:59:45,188 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 50 [2019-09-08 11:59:45,489 WARN L188 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 59 [2019-09-08 11:59:45,783 WARN L188 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 73 [2019-09-08 11:59:46,127 WARN L188 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 79 [2019-09-08 11:59:46,558 WARN L188 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 93 [2019-09-08 11:59:47,144 WARN L188 SmtUtils]: Spent 451.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 109 [2019-09-08 11:59:47,798 WARN L188 SmtUtils]: Spent 541.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 127 [2019-09-08 11:59:48,225 WARN L188 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 89 [2019-09-08 11:59:48,705 WARN L188 SmtUtils]: Spent 411.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 107 [2019-09-08 11:59:49,991 WARN L188 SmtUtils]: Spent 1.14 s on a formula simplification. DAG size of input: 181 DAG size of output: 142 [2019-09-08 11:59:51,047 WARN L188 SmtUtils]: Spent 925.00 ms on a formula simplification. DAG size of input: 189 DAG size of output: 147 [2019-09-08 11:59:51,872 WARN L188 SmtUtils]: Spent 670.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 122 [2019-09-08 11:59:52,285 WARN L188 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 101 [2019-09-08 11:59:53,080 WARN L188 SmtUtils]: Spent 707.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 127 [2019-09-08 11:59:53,444 WARN L188 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 86 [2019-09-08 11:59:53,731 WARN L188 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 74 [2019-09-08 11:59:54,161 WARN L188 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 101 [2019-09-08 11:59:54,478 WARN L188 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 74 [2019-09-08 11:59:54,800 WARN L188 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 86 [2019-09-08 11:59:55,068 WARN L188 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2019-09-08 11:59:55,245 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 59 [2019-09-08 11:59:55,438 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2019-09-08 11:59:55,753 WARN L188 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 86 [2019-09-08 11:59:56,013 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 59 [2019-09-08 11:59:56,287 WARN L188 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 79 [2019-09-08 11:59:56,671 WARN L188 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 82 [2019-09-08 11:59:57,011 WARN L188 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 83 [2019-09-08 11:59:57,337 WARN L188 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 70 [2019-09-08 11:59:57,530 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 50 [2019-09-08 11:59:57,734 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 53 [2019-09-08 11:59:57,933 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 56 [2019-09-08 11:59:58,373 WARN L188 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 77 [2019-09-08 11:59:58,781 WARN L188 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 80 [2019-09-08 11:59:59,170 WARN L188 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 81 [2019-09-08 11:59:59,457 WARN L188 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 84 [2019-09-08 11:59:59,691 WARN L188 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 68 [2019-09-08 12:00:00,116 WARN L188 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 84 [2019-09-08 12:00:00,461 WARN L188 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 79 [2019-09-08 12:00:00,656 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 55 [2019-09-08 12:00:00,980 WARN L188 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 72 [2019-09-08 12:00:01,371 WARN L188 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 82 [2019-09-08 12:00:01,566 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 56 [2019-09-08 12:00:02,037 WARN L188 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 83 [2019-09-08 12:00:02,245 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 57 [2019-09-08 12:00:02,566 WARN L188 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 86 [2019-09-08 12:00:02,759 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2019-09-08 12:00:02,996 WARN L188 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 70 [2019-09-08 12:00:03,549 WARN L188 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 86 [2019-09-08 12:00:03,753 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 58 [2019-09-08 12:00:04,141 WARN L188 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 74 [2019-09-08 12:00:04,944 WARN L188 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 76 [2019-09-08 12:00:05,278 WARN L188 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 51 [2019-09-08 12:00:05,940 WARN L188 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 76 [2019-09-08 12:00:06,273 WARN L188 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 80 [2019-09-08 12:00:06,469 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2019-09-08 12:00:06,767 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 53 [2019-09-08 12:00:07,067 WARN L188 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 73 [2019-09-08 12:00:07,362 WARN L188 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2019-09-08 12:00:07,957 WARN L188 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 77 [2019-09-08 12:00:08,335 WARN L188 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 80 [2019-09-08 12:00:09,001 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 48 [2019-09-08 12:00:09,504 WARN L188 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 73 [2019-09-08 12:00:09,822 WARN L188 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 78 [2019-09-08 12:00:10,162 WARN L188 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 77 [2019-09-08 12:00:10,496 WARN L188 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 82 [2019-09-08 12:00:10,754 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 50 [2019-09-08 12:00:11,080 WARN L188 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 81 [2019-09-08 12:00:11,525 WARN L188 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 88 [2019-09-08 12:00:11,875 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63 [2019-09-08 12:00:12,264 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 47 [2019-09-08 12:00:12,422 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 50 [2019-09-08 12:00:12,637 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 54 [2019-09-08 12:00:12,864 WARN L188 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 59 [2019-09-08 12:00:13,065 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 49 [2019-09-08 12:00:13,263 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 56 [2019-09-08 12:00:13,733 WARN L188 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2019-09-08 12:00:14,074 WARN L188 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 82 [2019-09-08 12:00:14,482 WARN L188 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 61 [2019-09-08 12:00:14,925 WARN L188 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 88 [2019-09-08 12:00:15,346 WARN L188 SmtUtils]: Spent 296.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 92 [2019-09-08 12:00:15,701 WARN L188 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2019-09-08 12:00:15,990 WARN L188 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 56 [2019-09-08 12:00:16,296 WARN L188 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 65 [2019-09-08 12:00:16,478 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 52 [2019-09-08 12:00:16,741 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 53 [2019-09-08 12:00:16,973 WARN L188 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 60 [2019-09-08 12:00:17,397 WARN L188 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 67 [2019-09-08 12:00:17,705 WARN L188 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 65 [2019-09-08 12:00:18,181 WARN L188 SmtUtils]: Spent 312.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 92 [2019-09-08 12:00:18,448 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 56 [2019-09-08 12:00:18,763 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 59 [2019-09-08 12:00:18,952 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 55 [2019-09-08 12:00:19,295 WARN L188 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 71 [2019-09-08 12:00:20,107 WARN L188 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 56 [2019-09-08 12:00:20,641 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2019-09-08 12:00:20,986 WARN L188 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2019-09-08 12:00:21,256 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 44 [2019-09-08 12:00:22,328 WARN L188 SmtUtils]: Spent 233.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 74 [2019-09-08 12:00:22,563 WARN L188 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 62 [2019-09-08 12:00:22,786 WARN L188 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 58 [2019-09-08 12:00:23,189 WARN L188 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 56 [2019-09-08 12:00:23,375 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 50 [2019-09-08 12:00:24,026 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2019-09-08 12:00:25,400 WARN L188 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 84 [2019-09-08 12:00:25,796 WARN L188 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 80 [2019-09-08 12:00:26,562 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 55 [2019-09-08 12:00:26,858 WARN L188 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 75 [2019-09-08 12:00:27,532 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 52 [2019-09-08 12:00:27,994 WARN L188 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 100 [2019-09-08 12:00:28,270 WARN L188 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 67 [2019-09-08 12:00:28,891 WARN L188 SmtUtils]: Spent 342.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 96 [2019-09-08 12:00:29,272 WARN L188 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 85 [2019-09-08 12:00:29,638 WARN L188 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 81 [2019-09-08 12:00:29,832 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2019-09-08 12:00:30,182 WARN L188 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 79 [2019-09-08 12:00:30,471 WARN L188 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 73 [2019-09-08 12:00:30,855 WARN L188 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 79 [2019-09-08 12:00:31,647 WARN L188 SmtUtils]: Spent 562.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 81 [2019-09-08 12:00:32,489 WARN L188 SmtUtils]: Spent 535.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 106 [2019-09-08 12:00:32,961 WARN L188 SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 102 [2019-09-08 12:00:33,344 WARN L188 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 100 [2019-09-08 12:00:33,794 WARN L188 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 79 [2019-09-08 12:00:34,355 WARN L188 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 82 [2019-09-08 12:00:34,943 WARN L188 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 97 [2019-09-08 12:00:35,133 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 65 [2019-09-08 12:00:35,308 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63 [2019-09-08 12:00:36,510 WARN L188 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 106 [2019-09-08 12:00:37,027 WARN L188 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 103 [2019-09-08 12:00:37,349 WARN L188 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 70 [2019-09-08 12:00:37,707 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 40 [2019-09-08 12:00:38,078 WARN L188 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 75 [2019-09-08 12:00:38,385 WARN L188 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 57 [2019-09-08 12:00:38,847 WARN L188 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 93 [2019-09-08 12:00:39,015 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 56 [2019-09-08 12:00:39,798 WARN L188 SmtUtils]: Spent 452.00 ms on a formula simplification. DAG size of input: 139 DAG size of output: 112 [2019-09-08 12:00:39,988 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 53 [2019-09-08 12:00:40,241 WARN L188 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 62 [2019-09-08 12:00:40,642 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 49 [2019-09-08 12:00:40,820 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 45 [2019-09-08 12:00:41,106 WARN L188 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 59 [2019-09-08 12:00:41,614 WARN L188 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 94 [2019-09-08 12:00:41,884 WARN L188 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2019-09-08 12:00:42,209 WARN L188 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 76 [2019-09-08 12:00:42,720 WARN L188 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 99 [2019-09-08 12:00:43,052 WARN L188 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 77 [2019-09-08 12:00:43,628 WARN L188 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 77 [2019-09-08 12:00:44,113 WARN L188 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 64 [2019-09-08 12:00:44,359 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 55 [2019-09-08 12:00:44,524 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 48 [2019-09-08 12:00:44,785 WARN L188 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2019-09-08 12:00:45,490 WARN L188 SmtUtils]: Spent 464.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 118 [2019-09-08 12:00:45,693 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2019-09-08 12:00:46,382 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 44 [2019-09-08 12:00:46,819 WARN L188 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 67 [2019-09-08 12:00:47,831 WARN L188 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 112 DAG size of output: 83 [2019-09-08 12:00:48,319 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 42 [2019-09-08 12:00:48,818 WARN L188 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 69 [2019-09-08 12:00:49,349 WARN L188 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 101 [2019-09-08 12:00:49,971 WARN L188 SmtUtils]: Spent 463.00 ms on a formula simplification. DAG size of input: 147 DAG size of output: 115 [2019-09-08 12:00:50,457 WARN L188 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 89 [2019-09-08 12:00:50,766 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 43 [2019-09-08 12:00:51,063 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 48 [2019-09-08 12:00:51,367 WARN L188 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 70 [2019-09-08 12:00:52,212 WARN L188 SmtUtils]: Spent 575.00 ms on a formula simplification. DAG size of input: 165 DAG size of output: 133 [2019-09-08 12:00:52,682 WARN L188 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 95 [2019-09-08 12:00:53,204 WARN L188 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 107 [2019-09-08 12:00:53,617 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 49 [2019-09-08 12:00:54,211 WARN L188 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 113 [2019-09-08 12:00:54,458 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 41 [2019-09-08 12:00:54,754 WARN L188 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 71 [2019-09-08 12:00:55,292 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 50 [2019-09-08 12:00:56,126 WARN L188 SmtUtils]: Spent 621.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 116 [2019-09-08 12:00:56,613 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 47 [2019-09-08 12:00:57,154 WARN L188 SmtUtils]: Spent 427.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 83 [2019-09-08 12:00:57,440 WARN L188 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 76 [2019-09-08 12:00:58,219 WARN L188 SmtUtils]: Spent 655.00 ms on a formula simplification. DAG size of input: 160 DAG size of output: 121 [2019-09-08 12:00:58,558 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2019-09-08 12:00:59,036 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 55 [2019-09-08 12:00:59,338 WARN L188 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 84 [2019-09-08 12:00:59,634 WARN L188 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2019-09-08 12:00:59,905 WARN L188 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 68 [2019-09-08 12:01:00,593 WARN L188 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 67 [2019-09-08 12:01:01,001 WARN L188 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 78 [2019-09-08 12:01:02,391 WARN L188 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 68 [2019-09-08 12:01:03,236 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 53 [2019-09-08 12:01:04,372 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 53 [2019-09-08 12:01:04,727 WARN L188 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 72 [2019-09-08 12:01:04,907 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 56 [2019-09-08 12:01:05,891 WARN L188 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 77 [2019-09-08 12:01:06,330 WARN L188 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 79 [2019-09-08 12:01:06,624 WARN L188 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2019-09-08 12:01:07,411 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63 [2019-09-08 12:01:07,909 WARN L188 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 71 [2019-09-08 12:01:08,821 WARN L188 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 74 [2019-09-08 12:01:09,395 WARN L188 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 76 [2019-09-08 12:01:09,809 WARN L188 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 70 [2019-09-08 12:01:10,121 WARN L188 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 71 [2019-09-08 12:01:10,995 WARN L188 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 75 [2019-09-08 12:01:11,434 WARN L188 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 86 [2019-09-08 12:01:11,813 WARN L188 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 80 [2019-09-08 12:01:12,142 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2019-09-08 12:01:12,711 WARN L188 SmtUtils]: Spent 262.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 83 [2019-09-08 12:01:13,066 WARN L188 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 76 [2019-09-08 12:01:13,370 WARN L188 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 77 [2019-09-08 12:01:13,637 WARN L188 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 71 [2019-09-08 12:01:14,067 WARN L188 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 74 [2019-09-08 12:01:14,535 WARN L188 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 90 [2019-09-08 12:01:15,037 WARN L188 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 72 [2019-09-08 12:01:15,364 WARN L188 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 79 [2019-09-08 12:01:15,588 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 60 [2019-09-08 12:01:15,889 WARN L188 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 73 [2019-09-08 12:01:16,717 WARN L188 SmtUtils]: Spent 493.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 82 [2019-09-08 12:01:17,032 WARN L188 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 76 [2019-09-08 12:01:18,147 WARN L188 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 77 [2019-09-08 12:01:18,500 WARN L188 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 78 [2019-09-08 12:01:19,047 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2019-09-08 12:01:19,488 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 49 [2019-09-08 12:01:19,818 WARN L188 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 78 [2019-09-08 12:01:19,982 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 59 [2019-09-08 12:01:20,276 WARN L188 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2019-09-08 12:01:21,056 WARN L188 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 67 [2019-09-08 12:01:21,669 WARN L188 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 84 [2019-09-08 12:01:21,982 WARN L188 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 78 [2019-09-08 12:01:23,083 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 51 [2019-09-08 12:01:24,852 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 50 [2019-09-08 12:01:25,242 WARN L188 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 61 [2019-09-08 12:01:26,042 WARN L188 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 54 [2019-09-08 12:01:26,650 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2019-09-08 12:01:26,998 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2019-09-08 12:01:27,523 WARN L188 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 55 [2019-09-08 12:01:28,512 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 49 [2019-09-08 12:01:28,735 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 55 [2019-09-08 12:01:29,899 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 56 [2019-09-08 12:01:42,827 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2019-09-08 12:01:43,124 WARN L188 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2019-09-08 12:01:43,566 WARN L188 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 83 [2019-09-08 12:01:44,186 WARN L188 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 77 [2019-09-08 12:01:44,496 WARN L188 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 76 [2019-09-08 12:01:45,522 WARN L188 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2019-09-08 12:01:45,771 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61 [2019-09-08 12:01:46,061 WARN L188 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 80 [2019-09-08 12:01:47,046 WARN L188 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 72 [2019-09-08 12:01:47,293 WARN L188 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 77 [2019-09-08 12:01:47,632 WARN L188 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 84 [2019-09-08 12:01:48,456 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 64 [2019-09-08 12:01:48,939 WARN L188 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 78 [2019-09-08 12:01:49,343 WARN L188 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 79 [2019-09-08 12:01:50,535 WARN L188 SmtUtils]: Spent 327.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 95 [2019-09-08 12:01:50,899 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 67 [2019-09-08 12:01:51,397 WARN L188 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 89 [2019-09-08 12:01:51,812 WARN L188 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 88 [2019-09-08 12:01:52,203 WARN L188 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 55 [2019-09-08 12:01:53,237 WARN L188 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 72 [2019-09-08 12:01:54,175 WARN L188 SmtUtils]: Spent 330.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 96 [2019-09-08 12:01:55,409 WARN L188 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 90 [2019-09-08 12:01:55,736 WARN L188 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 63 [2019-09-08 12:01:57,020 WARN L188 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 79 [2019-09-08 12:02:46,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 12:02:46,708 INFO L93 Difference]: Finished difference Result 488907 states and 660435 transitions. [2019-09-08 12:02:46,709 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 348 states. [2019-09-08 12:02:46,709 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 86 [2019-09-08 12:02:46,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 12:02:47,284 INFO L225 Difference]: With dead ends: 488907 [2019-09-08 12:02:47,285 INFO L226 Difference]: Without dead ends: 434860 [2019-09-08 12:02:47,391 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 448 GetRequests, 68 SyntacticMatches, 10 SemanticMatches, 370 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60393 ImplicationChecksByTransitivity, 86.2s TimeCoverageRelationStatistics Valid=13680, Invalid=124332, Unknown=0, NotChecked=0, Total=138012 [2019-09-08 12:02:47,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434860 states. [2019-09-08 12:03:11,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434860 to 78086. [2019-09-08 12:03:11,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78086 states. [2019-09-08 12:03:11,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78086 states to 78086 states and 105072 transitions. [2019-09-08 12:03:11,165 INFO L78 Accepts]: Start accepts. Automaton has 78086 states and 105072 transitions. Word has length 86 [2019-09-08 12:03:11,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 12:03:11,165 INFO L475 AbstractCegarLoop]: Abstraction has 78086 states and 105072 transitions. [2019-09-08 12:03:11,165 INFO L476 AbstractCegarLoop]: Interpolant automaton has 35 states. [2019-09-08 12:03:11,165 INFO L276 IsEmpty]: Start isEmpty. Operand 78086 states and 105072 transitions. [2019-09-08 12:03:11,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2019-09-08 12:03:11,168 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 12:03:11,168 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 12:03:11,168 INFO L418 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 12:03:11,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 12:03:11,168 INFO L82 PathProgramCache]: Analyzing trace with hash -229751769, now seen corresponding path program 1 times [2019-09-08 12:03:11,168 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 12:03:11,168 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 12:03:11,169 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 12:03:11,169 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 12:03:11,170 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 12:03:11,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 12:03:11,205 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 12:03:11,206 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 12:03:11,206 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-08 12:03:11,206 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-08 12:03:11,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-08 12:03:11,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 12:03:11,207 INFO L87 Difference]: Start difference. First operand 78086 states and 105072 transitions. Second operand 3 states. [2019-09-08 12:03:25,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 12:03:25,130 INFO L93 Difference]: Finished difference Result 148260 states and 199767 transitions. [2019-09-08 12:03:25,130 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-08 12:03:25,130 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 86 [2019-09-08 12:03:25,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 12:03:25,205 INFO L225 Difference]: With dead ends: 148260 [2019-09-08 12:03:25,206 INFO L226 Difference]: Without dead ends: 70352 [2019-09-08 12:03:25,250 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 12:03:25,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70352 states. [2019-09-08 12:03:39,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70352 to 70352. [2019-09-08 12:03:39,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70352 states. [2019-09-08 12:03:39,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70352 states to 70352 states and 93973 transitions. [2019-09-08 12:03:39,928 INFO L78 Accepts]: Start accepts. Automaton has 70352 states and 93973 transitions. Word has length 86 [2019-09-08 12:03:39,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 12:03:39,928 INFO L475 AbstractCegarLoop]: Abstraction has 70352 states and 93973 transitions. [2019-09-08 12:03:39,928 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-08 12:03:39,928 INFO L276 IsEmpty]: Start isEmpty. Operand 70352 states and 93973 transitions. [2019-09-08 12:03:39,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2019-09-08 12:03:39,930 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 12:03:39,930 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 12:03:39,930 INFO L418 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 12:03:39,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 12:03:39,930 INFO L82 PathProgramCache]: Analyzing trace with hash 1149367248, now seen corresponding path program 1 times [2019-09-08 12:03:39,930 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 12:03:39,930 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 12:03:39,931 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 12:03:39,931 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 12:03:39,931 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 12:03:39,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 12:03:39,980 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 12:03:39,980 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 12:03:39,980 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-08 12:03:39,980 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-08 12:03:39,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-08 12:03:39,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 12:03:39,981 INFO L87 Difference]: Start difference. First operand 70352 states and 93973 transitions. Second operand 3 states. [2019-09-08 12:03:48,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 12:03:48,217 INFO L93 Difference]: Finished difference Result 106294 states and 142875 transitions. [2019-09-08 12:03:48,218 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-08 12:03:48,218 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 87 [2019-09-08 12:03:48,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 12:03:48,259 INFO L225 Difference]: With dead ends: 106294 [2019-09-08 12:03:48,259 INFO L226 Difference]: Without dead ends: 40466 [2019-09-08 12:03:48,295 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 12:03:48,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40466 states. [2019-09-08 12:03:56,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40466 to 40464. [2019-09-08 12:03:56,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40464 states. [2019-09-08 12:03:56,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40464 states to 40464 states and 53254 transitions. [2019-09-08 12:03:56,456 INFO L78 Accepts]: Start accepts. Automaton has 40464 states and 53254 transitions. Word has length 87 [2019-09-08 12:03:56,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 12:03:56,456 INFO L475 AbstractCegarLoop]: Abstraction has 40464 states and 53254 transitions. [2019-09-08 12:03:56,456 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-08 12:03:56,457 INFO L276 IsEmpty]: Start isEmpty. Operand 40464 states and 53254 transitions. [2019-09-08 12:03:56,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2019-09-08 12:03:56,458 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 12:03:56,458 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 12:03:56,458 INFO L418 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 12:03:56,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 12:03:56,458 INFO L82 PathProgramCache]: Analyzing trace with hash 555199248, now seen corresponding path program 1 times [2019-09-08 12:03:56,458 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 12:03:56,458 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 12:03:56,459 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 12:03:56,459 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 12:03:56,460 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 12:03:56,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 12:03:57,428 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 12:03:57,428 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 12:03:57,428 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) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 12:03:57,439 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 12:03:57,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 12:03:57,529 INFO L256 TraceCheckSpWp]: Trace formula consists of 611 conjuncts, 19 conjunts are in the unsatisfiable core [2019-09-08 12:03:57,531 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 12:03:57,710 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 12:03:58,054 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 12:03:58,058 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 12:03:58,058 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 12] total 28 [2019-09-08 12:03:58,058 INFO L454 AbstractCegarLoop]: Interpolant automaton has 28 states [2019-09-08 12:03:58,059 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2019-09-08 12:03:58,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=686, Unknown=0, NotChecked=0, Total=756 [2019-09-08 12:03:58,059 INFO L87 Difference]: Start difference. First operand 40464 states and 53254 transitions. Second operand 28 states. [2019-09-08 12:04:01,821 WARN L188 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 52 [2019-09-08 12:04:02,057 WARN L188 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 61 [2019-09-08 12:04:02,348 WARN L188 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 66 [2019-09-08 12:04:02,649 WARN L188 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 72 [2019-09-08 12:04:03,029 WARN L188 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 79 [2019-09-08 12:04:03,417 WARN L188 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 83 [2019-09-08 12:04:03,696 WARN L188 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 74 [2019-09-08 12:04:03,980 WARN L188 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 74 [2019-09-08 12:04:04,330 WARN L188 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 77 [2019-09-08 12:04:04,574 WARN L188 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 76 [2019-09-08 12:04:04,816 WARN L188 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65 [2019-09-08 12:04:05,099 WARN L188 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 69 [2019-09-08 12:04:05,341 WARN L188 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2019-09-08 12:04:05,837 WARN L188 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 66 [2019-09-08 12:04:06,302 WARN L188 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 62 [2019-09-08 12:04:06,701 WARN L188 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 59 [2019-09-08 12:04:07,142 WARN L188 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 71 [2019-09-08 12:04:07,391 WARN L188 SmtUtils]: Spent 191.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 62 [2019-09-08 12:04:07,856 WARN L188 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 69 [2019-09-08 12:04:08,112 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65 [2019-09-08 12:04:08,375 WARN L188 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 59 [2019-09-08 12:04:08,620 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 64 [2019-09-08 12:04:08,965 WARN L188 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 66 [2019-09-08 12:04:09,208 WARN L188 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 71 [2019-09-08 12:04:09,505 WARN L188 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 62 [2019-09-08 12:04:09,747 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 58 [2019-09-08 12:04:10,081 WARN L188 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 69 [2019-09-08 12:04:10,362 WARN L188 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 65 [2019-09-08 12:04:10,638 WARN L188 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 59 [2019-09-08 12:04:11,135 WARN L188 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 66 [2019-09-08 12:04:11,345 WARN L188 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65 [2019-09-08 12:04:11,595 WARN L188 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 56 [2019-09-08 12:04:12,000 WARN L188 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 63 [2019-09-08 12:04:12,238 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2019-09-08 12:04:12,465 WARN L188 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 53 [2019-09-08 12:04:12,747 WARN L188 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 60 [2019-09-08 12:04:13,438 WARN L188 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 33 [2019-09-08 12:04:14,095 WARN L188 SmtUtils]: Spent 367.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2019-09-08 12:04:14,521 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 45 [2019-09-08 12:04:14,689 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2019-09-08 12:04:15,860 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2019-09-08 12:04:16,193 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 49 [2019-09-08 12:04:17,719 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2019-09-08 12:04:18,016 WARN L188 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 65 [2019-09-08 12:04:18,309 WARN L188 SmtUtils]: Spent 221.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 71 [2019-09-08 12:04:18,764 WARN L188 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 72 [2019-09-08 12:04:19,119 WARN L188 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 78 [2019-09-08 12:04:19,407 WARN L188 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 59 [2019-09-08 12:04:19,695 WARN L188 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 71 [2019-09-08 12:04:19,940 WARN L188 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 65 [2019-09-08 12:04:20,182 WARN L188 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 62 [2019-09-08 12:04:20,465 WARN L188 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 68 [2019-09-08 12:04:20,834 WARN L188 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 78 [2019-09-08 12:04:21,114 WARN L188 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 72 [2019-09-08 12:04:21,416 WARN L188 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 69 [2019-09-08 12:04:21,765 WARN L188 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 75 [2019-09-08 12:04:22,024 WARN L188 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 65 [2019-09-08 12:04:22,311 WARN L188 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 68 [2019-09-08 12:04:22,637 WARN L188 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 72 [2019-09-08 12:04:23,018 WARN L188 SmtUtils]: Spent 268.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 75 [2019-09-08 12:04:23,339 WARN L188 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 13 [2019-09-08 12:04:23,602 WARN L188 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 51 [2019-09-08 12:04:23,813 WARN L188 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 65 [2019-09-08 12:04:24,092 WARN L188 SmtUtils]: Spent 214.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 72 [2019-09-08 12:04:24,424 WARN L188 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 65 [2019-09-08 12:04:24,709 WARN L188 SmtUtils]: Spent 212.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 72 [2019-09-08 12:04:25,440 WARN L188 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 76 [2019-09-08 12:04:25,960 WARN L188 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 76 [2019-09-08 12:04:26,498 WARN L188 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 58 [2019-09-08 12:04:27,005 WARN L188 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 62 [2019-09-08 12:04:27,185 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 42 [2019-09-08 12:04:27,490 WARN L188 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 63 [2019-09-08 12:04:27,698 WARN L188 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 53 [2019-09-08 12:04:28,226 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 53 [2019-09-08 12:04:28,687 WARN L188 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 56 [2019-09-08 12:04:29,297 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 48 [2019-09-08 12:04:29,984 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 45 [2019-09-08 12:04:30,729 WARN L188 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 56 [2019-09-08 12:04:31,709 WARN L188 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 63 [2019-09-08 12:04:32,156 WARN L188 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 56 [2019-09-08 12:04:32,658 WARN L188 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 63 [2019-09-08 12:04:33,137 WARN L188 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 57 [2019-09-08 12:04:33,389 WARN L188 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 56 [2019-09-08 12:04:33,858 WARN L188 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 50 [2019-09-08 12:04:36,774 WARN L188 SmtUtils]: Spent 437.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 46 [2019-09-08 12:04:37,327 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2019-09-08 12:04:37,489 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2019-09-08 12:04:38,494 WARN L188 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 57 [2019-09-08 12:04:39,499 WARN L188 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 54 [2019-09-08 12:04:55,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 12:04:55,299 INFO L93 Difference]: Finished difference Result 123952 states and 163543 transitions. [2019-09-08 12:04:55,299 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 145 states. [2019-09-08 12:04:55,299 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 87 [2019-09-08 12:04:55,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 12:04:55,394 INFO L225 Difference]: With dead ends: 123952 [2019-09-08 12:04:55,394 INFO L226 Difference]: Without dead ends: 89261 [2019-09-08 12:04:55,423 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10268 ImplicationChecksByTransitivity, 26.5s TimeCoverageRelationStatistics Valid=4082, Invalid=22978, Unknown=0, NotChecked=0, Total=27060 [2019-09-08 12:04:55,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89261 states. [2019-09-08 12:05:09,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89261 to 50733. [2019-09-08 12:05:09,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50733 states. [2019-09-08 12:05:09,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50733 states to 50733 states and 67455 transitions. [2019-09-08 12:05:09,143 INFO L78 Accepts]: Start accepts. Automaton has 50733 states and 67455 transitions. Word has length 87 [2019-09-08 12:05:09,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 12:05:09,144 INFO L475 AbstractCegarLoop]: Abstraction has 50733 states and 67455 transitions. [2019-09-08 12:05:09,144 INFO L476 AbstractCegarLoop]: Interpolant automaton has 28 states. [2019-09-08 12:05:09,144 INFO L276 IsEmpty]: Start isEmpty. Operand 50733 states and 67455 transitions. [2019-09-08 12:05:09,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2019-09-08 12:05:09,145 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 12:05:09,145 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] [2019-09-08 12:05:09,146 INFO L418 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 12:05:09,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 12:05:09,146 INFO L82 PathProgramCache]: Analyzing trace with hash 232374447, now seen corresponding path program 1 times [2019-09-08 12:05:09,146 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 12:05:09,146 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 12:05:09,147 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 12:05:09,147 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 12:05:09,147 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 12:05:09,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 12:05:09,191 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 12:05:09,191 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 12:05:09,192 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-08 12:05:09,192 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-08 12:05:09,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-08 12:05:09,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 12:05:09,193 INFO L87 Difference]: Start difference. First operand 50733 states and 67455 transitions. Second operand 3 states. [2019-09-08 12:05:13,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 12:05:13,787 INFO L93 Difference]: Finished difference Result 68057 states and 90597 transitions. [2019-09-08 12:05:13,787 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-08 12:05:13,787 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 87 [2019-09-08 12:05:13,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 12:05:13,805 INFO L225 Difference]: With dead ends: 68057 [2019-09-08 12:05:13,805 INFO L226 Difference]: Without dead ends: 18778 [2019-09-08 12:05:13,832 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 12:05:13,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18778 states. [2019-09-08 12:05:17,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18778 to 18218. [2019-09-08 12:05:17,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18218 states. [2019-09-08 12:05:17,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18218 states to 18218 states and 23786 transitions. [2019-09-08 12:05:17,973 INFO L78 Accepts]: Start accepts. Automaton has 18218 states and 23786 transitions. Word has length 87 [2019-09-08 12:05:17,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 12:05:17,973 INFO L475 AbstractCegarLoop]: Abstraction has 18218 states and 23786 transitions. [2019-09-08 12:05:17,973 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-08 12:05:17,973 INFO L276 IsEmpty]: Start isEmpty. Operand 18218 states and 23786 transitions. [2019-09-08 12:05:17,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2019-09-08 12:05:17,974 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 12:05:17,974 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 12:05:17,974 INFO L418 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 12:05:17,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 12:05:17,975 INFO L82 PathProgramCache]: Analyzing trace with hash 1759219311, now seen corresponding path program 1 times [2019-09-08 12:05:17,975 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 12:05:17,975 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 12:05:17,976 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 12:05:17,976 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 12:05:17,976 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 12:05:17,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 12:05:18,806 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 12:05:18,806 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 12:05:18,806 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 12:05:19,003 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 12:05:19,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 12:05:19,091 INFO L256 TraceCheckSpWp]: Trace formula consists of 612 conjuncts, 22 conjunts are in the unsatisfiable core [2019-09-08 12:05:19,093 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 12:05:19,277 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 12:05:20,445 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 12:05:20,448 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 12:05:20,449 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 11] total 28 [2019-09-08 12:05:20,449 INFO L454 AbstractCegarLoop]: Interpolant automaton has 28 states [2019-09-08 12:05:20,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2019-09-08 12:05:20,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=683, Unknown=0, NotChecked=0, Total=756 [2019-09-08 12:05:20,450 INFO L87 Difference]: Start difference. First operand 18218 states and 23786 transitions. Second operand 28 states. [2019-09-08 12:05:21,210 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 37 [2019-09-08 12:05:21,549 WARN L188 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 73 [2019-09-08 12:05:22,020 WARN L188 SmtUtils]: Spent 415.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 91 [2019-09-08 12:05:22,347 WARN L188 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 67 [2019-09-08 12:05:22,602 WARN L188 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 73 [2019-09-08 12:05:22,821 WARN L188 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 64 [2019-09-08 12:05:23,054 WARN L188 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 66 [2019-09-08 12:05:23,225 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 57 [2019-09-08 12:05:23,410 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 57 [2019-09-08 12:05:23,645 WARN L188 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 64 [2019-09-08 12:05:23,976 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2019-09-08 12:05:24,138 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 45 [2019-09-08 12:05:24,366 WARN L188 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 65 [2019-09-08 12:05:25,281 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 56 [2019-09-08 12:05:25,593 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2019-09-08 12:05:26,263 WARN L188 SmtUtils]: Spent 448.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 93 [2019-09-08 12:05:29,015 WARN L188 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 56 [2019-09-08 12:05:31,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 12:05:31,454 INFO L93 Difference]: Finished difference Result 23392 states and 30678 transitions. [2019-09-08 12:05:31,454 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2019-09-08 12:05:31,454 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 87 [2019-09-08 12:05:31,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 12:05:31,468 INFO L225 Difference]: With dead ends: 23392 [2019-09-08 12:05:31,468 INFO L226 Difference]: Without dead ends: 15217 [2019-09-08 12:05:31,474 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 65 SyntacticMatches, 15 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1004 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=684, Invalid=3222, Unknown=0, NotChecked=0, Total=3906 [2019-09-08 12:05:31,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15217 states. [2019-09-08 12:05:34,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15217 to 10511. [2019-09-08 12:05:34,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10511 states. [2019-09-08 12:05:34,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10511 states to 10511 states and 13485 transitions. [2019-09-08 12:05:34,258 INFO L78 Accepts]: Start accepts. Automaton has 10511 states and 13485 transitions. Word has length 87 [2019-09-08 12:05:34,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 12:05:34,258 INFO L475 AbstractCegarLoop]: Abstraction has 10511 states and 13485 transitions. [2019-09-08 12:05:34,258 INFO L476 AbstractCegarLoop]: Interpolant automaton has 28 states. [2019-09-08 12:05:34,258 INFO L276 IsEmpty]: Start isEmpty. Operand 10511 states and 13485 transitions. [2019-09-08 12:05:34,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2019-09-08 12:05:34,259 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 12:05:34,259 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 12:05:34,260 INFO L418 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 12:05:34,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 12:05:34,260 INFO L82 PathProgramCache]: Analyzing trace with hash 569552534, now seen corresponding path program 1 times [2019-09-08 12:05:34,260 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 12:05:34,260 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 12:05:34,261 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 12:05:34,261 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 12:05:34,261 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 12:05:34,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 12:05:34,297 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-09-08 12:05:34,297 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 12:05:34,297 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-08 12:05:34,298 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-08 12:05:34,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-08 12:05:34,298 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-08 12:05:34,298 INFO L87 Difference]: Start difference. First operand 10511 states and 13485 transitions. Second operand 3 states. [2019-09-08 12:05:36,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 12:05:36,147 INFO L93 Difference]: Finished difference Result 17018 states and 21892 transitions. [2019-09-08 12:05:36,147 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-08 12:05:36,147 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 88 [2019-09-08 12:05:36,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 12:05:36,156 INFO L225 Difference]: With dead ends: 17018 [2019-09-08 12:05:36,156 INFO L226 Difference]: Without dead ends: 6607 [2019-09-08 12:05:36,166 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 12:05:36,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6607 states. [2019-09-08 12:05:37,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6607 to 6607. [2019-09-08 12:05:37,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6607 states. [2019-09-08 12:05:37,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6607 states to 6607 states and 8421 transitions. [2019-09-08 12:05:37,976 INFO L78 Accepts]: Start accepts. Automaton has 6607 states and 8421 transitions. Word has length 88 [2019-09-08 12:05:37,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 12:05:37,976 INFO L475 AbstractCegarLoop]: Abstraction has 6607 states and 8421 transitions. [2019-09-08 12:05:37,976 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-08 12:05:37,976 INFO L276 IsEmpty]: Start isEmpty. Operand 6607 states and 8421 transitions. [2019-09-08 12:05:37,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2019-09-08 12:05:37,978 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 12:05:37,978 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 12:05:37,979 INFO L418 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 12:05:37,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 12:05:37,979 INFO L82 PathProgramCache]: Analyzing trace with hash -39973736, now seen corresponding path program 1 times [2019-09-08 12:05:37,979 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 12:05:37,979 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 12:05:37,980 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 12:05:37,980 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 12:05:37,980 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 12:05:38,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 12:05:38,307 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 12:05:38,308 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 12:05:38,308 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) [2019-09-08 12:05:38,332 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 12:05:38,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 12:05:38,437 INFO L256 TraceCheckSpWp]: Trace formula consists of 774 conjuncts, 22 conjunts are in the unsatisfiable core [2019-09-08 12:05:38,440 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 12:05:38,753 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 12:05:38,863 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 12:05:39,110 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 12:05:39,114 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 12:05:39,114 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 21 [2019-09-08 12:05:39,115 INFO L454 AbstractCegarLoop]: Interpolant automaton has 21 states [2019-09-08 12:05:39,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2019-09-08 12:05:39,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=365, Unknown=0, NotChecked=0, Total=420 [2019-09-08 12:05:39,115 INFO L87 Difference]: Start difference. First operand 6607 states and 8421 transitions. Second operand 21 states. [2019-09-08 12:05:39,377 WARN L188 SmtUtils]: Spent 227.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2019-09-08 12:05:39,759 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 51 [2019-09-08 12:05:39,940 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2019-09-08 12:05:40,317 WARN L188 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 65 [2019-09-08 12:05:40,699 WARN L188 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 68 [2019-09-08 12:05:41,022 WARN L188 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 71 [2019-09-08 12:05:41,269 WARN L188 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 68 [2019-09-08 12:05:41,880 WARN L188 SmtUtils]: Spent 308.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 76 [2019-09-08 12:05:42,177 WARN L188 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 73 [2019-09-08 12:05:42,552 WARN L188 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 76 [2019-09-08 12:05:42,818 WARN L188 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 71 [2019-09-08 12:05:43,300 WARN L188 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 82 [2019-09-08 12:05:43,717 WARN L188 SmtUtils]: Spent 356.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 77 [2019-09-08 12:05:44,071 WARN L188 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 85 [2019-09-08 12:05:44,663 WARN L188 SmtUtils]: Spent 521.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 80 [2019-09-08 12:05:45,148 WARN L188 SmtUtils]: Spent 427.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 82 [2019-09-08 12:05:45,434 WARN L188 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 70 [2019-09-08 12:05:45,725 WARN L188 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 77 [2019-09-08 12:05:46,351 WARN L188 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 87 [2019-09-08 12:05:48,657 WARN L188 SmtUtils]: Spent 2.25 s on a formula simplification. DAG size of input: 85 DAG size of output: 75 [2019-09-08 12:05:49,024 WARN L188 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 87 [2019-09-08 12:05:49,319 WARN L188 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 75 [2019-09-08 12:05:49,684 WARN L188 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 87 [2019-09-08 12:05:49,995 WARN L188 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 75 [2019-09-08 12:05:50,532 WARN L188 SmtUtils]: Spent 484.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 77 [2019-09-08 12:05:50,973 WARN L188 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 87 [2019-09-08 12:05:51,253 WARN L188 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 75 [2019-09-08 12:05:51,671 WARN L188 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 78 [2019-09-08 12:05:52,137 WARN L188 SmtUtils]: Spent 405.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 77 [2019-09-08 12:05:52,668 WARN L188 SmtUtils]: Spent 289.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 87 [2019-09-08 12:05:53,112 WARN L188 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 77 [2019-09-08 12:05:53,505 WARN L188 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 81 [2019-09-08 12:05:53,880 WARN L188 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 78 [2019-09-08 12:05:55,148 WARN L188 SmtUtils]: Spent 283.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 82 [2019-09-08 12:05:56,232 WARN L188 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 87 [2019-09-08 12:05:56,621 WARN L188 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 81 [2019-09-08 12:05:57,474 WARN L188 SmtUtils]: Spent 595.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 78 [2019-09-08 12:05:58,564 WARN L188 SmtUtils]: Spent 613.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 90