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/eca-rers2012/Problem11_label55.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-02 01:09:13,145 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-02 01:09:13,147 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-02 01:09:13,161 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-10-02 01:09:13,170 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-02 01:09:13,171 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-02 01:09:13,172 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-02 01:09:13,173 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-02 01:09:13,174 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-02 01:09:13,175 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-02 01:09:13,177 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-02 01:09:13,179 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-02 01:09:13,180 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-02 01:09:13,182 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-02 01:09:13,183 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-02 01:09:13,183 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-02 01:09:13,188 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-02 01:09:13,200 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-02 01:09:13,201 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-02 01:09:13,201 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-02 01:09:13,202 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 [2019-10-02 01:09:13,229 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-02 01:09:13,229 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-02 01:09:13,231 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-02 01:09:13,231 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-02 01:09:13,232 INFO L138 SettingsManager]: * Use SBE=true [2019-10-02 01:09:13,232 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-02 01:09:13,232 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-02 01:09:13,233 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-02 01:09:13,233 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-02 01:09:13,233 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-02 01:09:13,234 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-02 01:09:13,234 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-02 01:09:13,235 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-02 01:09:13,235 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-02 01:09:13,235 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-02 01:09:13,235 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-02 01:09:13,236 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-02 01:09:13,236 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-02 01:09:13,236 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-02 01:09:13,236 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-02 01:09:13,237 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-02 01:09:13,237 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 01:09:13,237 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-02 01:09:13,238 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-02 01:09:13,238 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-02 01:09:13,238 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-02 01:09:13,238 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-02 01:09:13,239 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-02 01:09:13,239 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-02 01:09:13,289 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-02 01:09:13,301 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-02 01:09:13,305 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-02 01:09:13,306 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-02 01:09:13,306 INFO L275 PluginConnector]: CDTParser initialized [2019-10-02 01:09:13,307 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label55.c [2019-10-02 01:09:13,372 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71aad6ae7/3324d860b12247bf94754a5ea9e53eee/FLAG1bb56774e [2019-10-02 01:09:14,042 INFO L306 CDTParser]: Found 1 translation units. [2019-10-02 01:09:14,044 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label55.c [2019-10-02 01:09:14,059 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71aad6ae7/3324d860b12247bf94754a5ea9e53eee/FLAG1bb56774e [2019-10-02 01:09:14,244 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/71aad6ae7/3324d860b12247bf94754a5ea9e53eee [2019-10-02 01:09:14,256 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-02 01:09:14,258 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-02 01:09:14,259 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-02 01:09:14,259 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-02 01:09:14,262 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-02 01:09:14,263 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 01:09:14" (1/1) ... [2019-10-02 01:09:14,265 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@343aa16a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 01:09:14, skipping insertion in model container [2019-10-02 01:09:14,266 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 01:09:14" (1/1) ... [2019-10-02 01:09:14,271 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-02 01:09:14,341 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-02 01:09:15,074 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 01:09:15,083 INFO L188 MainTranslator]: Completed pre-run [2019-10-02 01:09:15,239 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 01:09:15,258 INFO L192 MainTranslator]: Completed translation [2019-10-02 01:09:15,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 01:09:15 WrapperNode [2019-10-02 01:09:15,260 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-02 01:09:15,261 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-02 01:09:15,261 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-02 01:09:15,261 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-02 01:09:15,279 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 01:09:15" (1/1) ... [2019-10-02 01:09:15,279 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 01:09:15" (1/1) ... [2019-10-02 01:09:15,311 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 01:09:15" (1/1) ... [2019-10-02 01:09:15,311 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 01:09:15" (1/1) ... [2019-10-02 01:09:15,389 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 01:09:15" (1/1) ... [2019-10-02 01:09:15,415 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 01:09:15" (1/1) ... [2019-10-02 01:09:15,430 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 01:09:15" (1/1) ... [2019-10-02 01:09:15,442 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-02 01:09:15,442 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-02 01:09:15,443 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-02 01:09:15,443 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-02 01:09:15,444 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 01:09:15" (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 [2019-10-02 01:09:15,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-02 01:09:15,517 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-02 01:09:15,518 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-10-02 01:09:15,518 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-02 01:09:15,519 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-10-02 01:09:15,519 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-02 01:09:15,519 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-02 01:09:15,519 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-02 01:09:15,520 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-02 01:09:15,520 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-02 01:09:15,520 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-02 01:09:17,395 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-02 01:09:17,396 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-02 01:09:17,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 01:09:17 BoogieIcfgContainer [2019-10-02 01:09:17,398 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-02 01:09:17,399 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-02 01:09:17,399 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-02 01:09:17,402 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-02 01:09:17,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.10 01:09:14" (1/3) ... [2019-10-02 01:09:17,404 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@739fa14c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 01:09:17, skipping insertion in model container [2019-10-02 01:09:17,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 01:09:15" (2/3) ... [2019-10-02 01:09:17,404 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@739fa14c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 01:09:17, skipping insertion in model container [2019-10-02 01:09:17,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 01:09:17" (3/3) ... [2019-10-02 01:09:17,406 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem11_label55.c [2019-10-02 01:09:17,416 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-02 01:09:17,429 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-02 01:09:17,447 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-02 01:09:17,505 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-10-02 01:09:17,506 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-02 01:09:17,506 INFO L378 AbstractCegarLoop]: Hoare is true [2019-10-02 01:09:17,506 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-02 01:09:17,506 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-02 01:09:17,506 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-02 01:09:17,507 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-02 01:09:17,507 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-02 01:09:17,507 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-02 01:09:17,543 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states. [2019-10-02 01:09:17,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-10-02 01:09:17,553 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 01:09:17,554 INFO L411 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] [2019-10-02 01:09:17,556 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 01:09:17,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 01:09:17,563 INFO L82 PathProgramCache]: Analyzing trace with hash 1587257066, now seen corresponding path program 1 times [2019-10-02 01:09:17,565 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 01:09:17,565 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 01:09:17,632 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 01:09:17,632 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 01:09:17,632 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 01:09:17,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 01:09:18,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 01:09:18,038 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 01:09:18,038 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-02 01:09:18,043 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-02 01:09:18,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-02 01:09:18,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-02 01:09:18,060 INFO L87 Difference]: Start difference. First operand 292 states. Second operand 4 states. [2019-10-02 01:09:20,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 01:09:20,129 INFO L93 Difference]: Finished difference Result 975 states and 1750 transitions. [2019-10-02 01:09:20,131 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-02 01:09:20,132 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2019-10-02 01:09:20,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 01:09:20,155 INFO L225 Difference]: With dead ends: 975 [2019-10-02 01:09:20,155 INFO L226 Difference]: Without dead ends: 616 [2019-10-02 01:09:20,166 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-02 01:09:20,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2019-10-02 01:09:20,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 422. [2019-10-02 01:09:20,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 422 states. [2019-10-02 01:09:20,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 422 states to 422 states and 607 transitions. [2019-10-02 01:09:20,259 INFO L78 Accepts]: Start accepts. Automaton has 422 states and 607 transitions. Word has length 51 [2019-10-02 01:09:20,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 01:09:20,260 INFO L475 AbstractCegarLoop]: Abstraction has 422 states and 607 transitions. [2019-10-02 01:09:20,260 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-02 01:09:20,260 INFO L276 IsEmpty]: Start isEmpty. Operand 422 states and 607 transitions. [2019-10-02 01:09:20,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2019-10-02 01:09:20,269 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 01:09:20,269 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 01:09:20,269 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 01:09:20,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 01:09:20,270 INFO L82 PathProgramCache]: Analyzing trace with hash -1592222806, now seen corresponding path program 1 times [2019-10-02 01:09:20,270 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 01:09:20,270 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 01:09:20,272 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 01:09:20,272 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 01:09:20,272 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 01:09:20,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 01:09:20,498 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 01:09:20,498 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 01:09:20,498 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-02 01:09:20,503 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-02 01:09:20,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-02 01:09:20,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-02 01:09:20,505 INFO L87 Difference]: Start difference. First operand 422 states and 607 transitions. Second operand 6 states. [2019-10-02 01:09:22,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 01:09:22,073 INFO L93 Difference]: Finished difference Result 1241 states and 1811 transitions. [2019-10-02 01:09:22,081 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-02 01:09:22,082 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 123 [2019-10-02 01:09:22,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 01:09:22,089 INFO L225 Difference]: With dead ends: 1241 [2019-10-02 01:09:22,089 INFO L226 Difference]: Without dead ends: 825 [2019-10-02 01:09:22,091 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-10-02 01:09:22,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 825 states. [2019-10-02 01:09:22,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 825 to 814. [2019-10-02 01:09:22,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 814 states. [2019-10-02 01:09:22,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 814 states to 814 states and 1163 transitions. [2019-10-02 01:09:22,143 INFO L78 Accepts]: Start accepts. Automaton has 814 states and 1163 transitions. Word has length 123 [2019-10-02 01:09:22,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 01:09:22,143 INFO L475 AbstractCegarLoop]: Abstraction has 814 states and 1163 transitions. [2019-10-02 01:09:22,144 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-02 01:09:22,144 INFO L276 IsEmpty]: Start isEmpty. Operand 814 states and 1163 transitions. [2019-10-02 01:09:22,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2019-10-02 01:09:22,149 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 01:09:22,150 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 01:09:22,150 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 01:09:22,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 01:09:22,151 INFO L82 PathProgramCache]: Analyzing trace with hash -654834599, now seen corresponding path program 1 times [2019-10-02 01:09:22,151 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 01:09:22,151 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 01:09:22,153 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 01:09:22,153 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 01:09:22,153 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 01:09:22,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 01:09:22,277 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 01:09:22,278 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 01:09:22,278 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-02 01:09:22,279 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-02 01:09:22,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-02 01:09:22,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-02 01:09:22,280 INFO L87 Difference]: Start difference. First operand 814 states and 1163 transitions. Second operand 4 states. [2019-10-02 01:09:24,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 01:09:24,053 INFO L93 Difference]: Finished difference Result 2406 states and 3479 transitions. [2019-10-02 01:09:24,054 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-02 01:09:24,054 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 124 [2019-10-02 01:09:24,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 01:09:24,065 INFO L225 Difference]: With dead ends: 2406 [2019-10-02 01:09:24,066 INFO L226 Difference]: Without dead ends: 1598 [2019-10-02 01:09:24,068 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-02 01:09:24,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1598 states. [2019-10-02 01:09:24,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1598 to 1393. [2019-10-02 01:09:24,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1393 states. [2019-10-02 01:09:24,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1393 states to 1393 states and 1963 transitions. [2019-10-02 01:09:24,117 INFO L78 Accepts]: Start accepts. Automaton has 1393 states and 1963 transitions. Word has length 124 [2019-10-02 01:09:24,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 01:09:24,118 INFO L475 AbstractCegarLoop]: Abstraction has 1393 states and 1963 transitions. [2019-10-02 01:09:24,118 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-02 01:09:24,118 INFO L276 IsEmpty]: Start isEmpty. Operand 1393 states and 1963 transitions. [2019-10-02 01:09:24,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2019-10-02 01:09:24,127 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 01:09:24,127 INFO L411 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 01:09:24,127 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 01:09:24,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 01:09:24,128 INFO L82 PathProgramCache]: Analyzing trace with hash 649342070, now seen corresponding path program 1 times [2019-10-02 01:09:24,128 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 01:09:24,128 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 01:09:24,129 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 01:09:24,130 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 01:09:24,130 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 01:09:24,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 01:09:24,409 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 01:09:24,409 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 01:09:24,410 INFO L224 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 [2019-10-02 01:09:24,442 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 01:09:24,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 01:09:24,508 INFO L256 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-02 01:09:24,519 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 01:09:24,625 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-02 01:09:24,698 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 01:09:24,711 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-02 01:09:24,711 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2019-10-02 01:09:24,713 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-02 01:09:24,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-02 01:09:24,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2019-10-02 01:09:24,714 INFO L87 Difference]: Start difference. First operand 1393 states and 1963 transitions. Second operand 10 states. [2019-10-02 01:09:30,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 01:09:30,792 INFO L93 Difference]: Finished difference Result 6923 states and 10793 transitions. [2019-10-02 01:09:30,792 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2019-10-02 01:09:30,792 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 145 [2019-10-02 01:09:30,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 01:09:30,830 INFO L225 Difference]: With dead ends: 6923 [2019-10-02 01:09:30,830 INFO L226 Difference]: Without dead ends: 5536 [2019-10-02 01:09:30,836 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=274, Invalid=986, Unknown=0, NotChecked=0, Total=1260 [2019-10-02 01:09:30,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5536 states. [2019-10-02 01:09:30,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5536 to 4728. [2019-10-02 01:09:30,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4728 states. [2019-10-02 01:09:31,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4728 states to 4728 states and 6831 transitions. [2019-10-02 01:09:31,019 INFO L78 Accepts]: Start accepts. Automaton has 4728 states and 6831 transitions. Word has length 145 [2019-10-02 01:09:31,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 01:09:31,020 INFO L475 AbstractCegarLoop]: Abstraction has 4728 states and 6831 transitions. [2019-10-02 01:09:31,021 INFO L476 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-02 01:09:31,021 INFO L276 IsEmpty]: Start isEmpty. Operand 4728 states and 6831 transitions. [2019-10-02 01:09:31,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2019-10-02 01:09:31,029 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 01:09:31,030 INFO L411 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-10-02 01:09:31,030 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 01:09:31,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 01:09:31,031 INFO L82 PathProgramCache]: Analyzing trace with hash 2104899422, now seen corresponding path program 1 times [2019-10-02 01:09:31,031 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 01:09:31,031 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 01:09:31,038 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 01:09:31,038 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 01:09:31,038 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 01:09:31,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 01:09:31,467 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 186 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 01:09:31,468 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 01:09:31,468 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-10-02 01:09:31,497 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-10-02 01:09:31,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 01:09:31,587 INFO L256 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-02 01:09:31,610 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 01:09:31,680 INFO L134 CoverageAnalysis]: Checked inductivity of 188 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2019-10-02 01:09:31,686 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-02 01:09:31,686 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2019-10-02 01:09:31,688 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-02 01:09:31,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-02 01:09:31,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-10-02 01:09:31,690 INFO L87 Difference]: Start difference. First operand 4728 states and 6831 transitions. Second operand 7 states. [2019-10-02 01:09:35,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 01:09:35,962 INFO L93 Difference]: Finished difference Result 13413 states and 22209 transitions. [2019-10-02 01:09:35,962 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-10-02 01:09:35,963 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 284 [2019-10-02 01:09:35,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 01:09:36,043 INFO L225 Difference]: With dead ends: 13413 [2019-10-02 01:09:36,043 INFO L226 Difference]: Without dead ends: 8691 [2019-10-02 01:09:36,066 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2019-10-02 01:09:36,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8691 states. [2019-10-02 01:09:36,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8691 to 8276. [2019-10-02 01:09:36,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8276 states. [2019-10-02 01:09:36,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8276 states to 8276 states and 13217 transitions. [2019-10-02 01:09:36,513 INFO L78 Accepts]: Start accepts. Automaton has 8276 states and 13217 transitions. Word has length 284 [2019-10-02 01:09:36,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 01:09:36,514 INFO L475 AbstractCegarLoop]: Abstraction has 8276 states and 13217 transitions. [2019-10-02 01:09:36,514 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-02 01:09:36,515 INFO L276 IsEmpty]: Start isEmpty. Operand 8276 states and 13217 transitions. [2019-10-02 01:09:36,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2019-10-02 01:09:36,525 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 01:09:36,526 INFO L411 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 01:09:36,526 INFO L418 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 01:09:36,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 01:09:36,526 INFO L82 PathProgramCache]: Analyzing trace with hash -961590813, now seen corresponding path program 1 times [2019-10-02 01:09:36,527 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 01:09:36,528 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 01:09:36,529 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 01:09:36,530 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 01:09:36,530 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 01:09:36,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 01:09:36,984 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 88 proven. 94 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 01:09:36,985 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 01:09:36,985 INFO L224 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 [2019-10-02 01:09:37,010 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 01:09:37,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 01:09:37,108 INFO L256 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-02 01:09:37,114 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 01:09:37,218 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-02 01:09:37,470 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 180 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (4)] Exception during sending of exit command (exit): Broken pipe [2019-10-02 01:09:37,475 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-02 01:09:37,475 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 16 [2019-10-02 01:09:37,476 INFO L454 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-02 01:09:37,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-02 01:09:37,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2019-10-02 01:09:37,484 INFO L87 Difference]: Start difference. First operand 8276 states and 13217 transitions. Second operand 16 states. [2019-10-02 01:09:41,037 WARN L191 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 39 [2019-10-02 01:10:01,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 01:10:01,548 INFO L93 Difference]: Finished difference Result 37480 states and 75118 transitions. [2019-10-02 01:10:01,553 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 179 states. [2019-10-02 01:10:01,554 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 292 [2019-10-02 01:10:01,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 01:10:01,874 INFO L225 Difference]: With dead ends: 37480 [2019-10-02 01:10:01,874 INFO L226 Difference]: Without dead ends: 29210 [2019-10-02 01:10:01,957 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 290 SyntacticMatches, 0 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14997 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=3657, Invalid=30753, Unknown=0, NotChecked=0, Total=34410 [2019-10-02 01:10:01,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29210 states. [2019-10-02 01:10:03,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29210 to 27516. [2019-10-02 01:10:03,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27516 states. [2019-10-02 01:10:03,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27516 states to 27516 states and 45118 transitions. [2019-10-02 01:10:03,964 INFO L78 Accepts]: Start accepts. Automaton has 27516 states and 45118 transitions. Word has length 292 [2019-10-02 01:10:03,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 01:10:03,965 INFO L475 AbstractCegarLoop]: Abstraction has 27516 states and 45118 transitions. [2019-10-02 01:10:03,965 INFO L476 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-02 01:10:03,965 INFO L276 IsEmpty]: Start isEmpty. Operand 27516 states and 45118 transitions. [2019-10-02 01:10:04,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 385 [2019-10-02 01:10:04,008 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 01:10:04,008 INFO L411 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 01:10:04,009 INFO L418 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 01:10:04,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 01:10:04,009 INFO L82 PathProgramCache]: Analyzing trace with hash 1581989085, now seen corresponding path program 1 times [2019-10-02 01:10:04,009 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 01:10:04,010 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 01:10:04,011 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 01:10:04,011 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 01:10:04,011 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 01:10:04,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 01:10:04,904 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 340 proven. 88 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 01:10:04,904 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 01:10:04,905 INFO L224 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 [2019-10-02 01:10:04,935 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 01:10:05,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 01:10:05,042 INFO L256 TraceCheckSpWp]: Trace formula consists of 637 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-02 01:10:05,059 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 01:10:05,070 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-02 01:10:05,071 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-02 01:10:05,162 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-02 01:10:05,474 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 321 proven. 2 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (5)] Exception during sending of exit command (exit): Broken pipe [2019-10-02 01:10:05,478 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-02 01:10:05,478 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 5] total 19 [2019-10-02 01:10:05,479 INFO L454 AbstractCegarLoop]: Interpolant automaton has 19 states [2019-10-02 01:10:05,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2019-10-02 01:10:05,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2019-10-02 01:10:05,480 INFO L87 Difference]: Start difference. First operand 27516 states and 45118 transitions. Second operand 19 states. [2019-10-02 01:10:07,134 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2019-10-02 01:10:08,016 WARN L191 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2019-10-02 01:10:08,344 WARN L191 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2019-10-02 01:10:10,630 WARN L191 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 50 [2019-10-02 01:10:11,949 WARN L191 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2019-10-02 01:10:13,239 WARN L191 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2019-10-02 01:10:20,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 01:10:20,016 INFO L93 Difference]: Finished difference Result 63080 states and 128092 transitions. [2019-10-02 01:10:20,016 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 73 states. [2019-10-02 01:10:20,017 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 384 [2019-10-02 01:10:20,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 01:10:20,386 INFO L225 Difference]: With dead ends: 63080 [2019-10-02 01:10:20,387 INFO L226 Difference]: Without dead ends: 35948 [2019-10-02 01:10:20,508 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 514 GetRequests, 427 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2754 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=1398, Invalid=6434, Unknown=0, NotChecked=0, Total=7832 [2019-10-02 01:10:20,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35948 states. [2019-10-02 01:10:23,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35948 to 31554. [2019-10-02 01:10:23,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31554 states. [2019-10-02 01:10:23,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31554 states to 31554 states and 49901 transitions. [2019-10-02 01:10:23,679 INFO L78 Accepts]: Start accepts. Automaton has 31554 states and 49901 transitions. Word has length 384 [2019-10-02 01:10:23,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 01:10:23,680 INFO L475 AbstractCegarLoop]: Abstraction has 31554 states and 49901 transitions. [2019-10-02 01:10:23,681 INFO L476 AbstractCegarLoop]: Interpolant automaton has 19 states. [2019-10-02 01:10:23,681 INFO L276 IsEmpty]: Start isEmpty. Operand 31554 states and 49901 transitions. [2019-10-02 01:10:23,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2019-10-02 01:10:23,758 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 01:10:23,759 INFO L411 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2019-10-02 01:10:23,759 INFO L418 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 01:10:23,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 01:10:23,760 INFO L82 PathProgramCache]: Analyzing trace with hash -1883168598, now seen corresponding path program 1 times [2019-10-02 01:10:23,760 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 01:10:23,760 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 01:10:23,761 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 01:10:23,761 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 01:10:23,762 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 01:10:23,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 01:10:24,672 INFO L134 CoverageAnalysis]: Checked inductivity of 673 backedges. 428 proven. 173 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2019-10-02 01:10:24,673 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 01:10:24,673 INFO L224 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 [2019-10-02 01:10:24,705 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 01:10:24,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 01:10:24,817 INFO L256 TraceCheckSpWp]: Trace formula consists of 734 conjuncts, 9 conjunts are in the unsatisfiable core [2019-10-02 01:10:24,830 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 01:10:25,371 INFO L134 CoverageAnalysis]: Checked inductivity of 673 backedges. 423 proven. 2 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2019-10-02 01:10:25,383 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-02 01:10:25,383 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 7] total 23 [2019-10-02 01:10:25,384 INFO L454 AbstractCegarLoop]: Interpolant automaton has 23 states [2019-10-02 01:10:25,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2019-10-02 01:10:25,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=438, Unknown=0, NotChecked=0, Total=506 [2019-10-02 01:10:25,385 INFO L87 Difference]: Start difference. First operand 31554 states and 49901 transitions. Second operand 23 states. [2019-10-02 01:10:53,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 01:10:53,040 INFO L93 Difference]: Finished difference Result 72637 states and 141010 transitions. [2019-10-02 01:10:53,040 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 150 states. [2019-10-02 01:10:53,040 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 440 [2019-10-02 01:10:53,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 01:10:53,299 INFO L225 Difference]: With dead ends: 72637 [2019-10-02 01:10:53,299 INFO L226 Difference]: Without dead ends: 39456 [2019-10-02 01:10:53,458 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 699 GetRequests, 529 SyntacticMatches, 1 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11458 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=3555, Invalid=25515, Unknown=0, NotChecked=0, Total=29070 [2019-10-02 01:10:53,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39456 states. [2019-10-02 01:10:54,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39456 to 30917. [2019-10-02 01:10:54,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30917 states. [2019-10-02 01:10:54,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30917 states to 30917 states and 41400 transitions. [2019-10-02 01:10:54,820 INFO L78 Accepts]: Start accepts. Automaton has 30917 states and 41400 transitions. Word has length 440 [2019-10-02 01:10:54,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 01:10:54,821 INFO L475 AbstractCegarLoop]: Abstraction has 30917 states and 41400 transitions. [2019-10-02 01:10:54,821 INFO L476 AbstractCegarLoop]: Interpolant automaton has 23 states. [2019-10-02 01:10:54,822 INFO L276 IsEmpty]: Start isEmpty. Operand 30917 states and 41400 transitions. [2019-10-02 01:10:54,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 472 [2019-10-02 01:10:54,883 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 01:10:54,883 INFO L411 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2019-10-02 01:10:54,883 INFO L418 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 01:10:54,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 01:10:54,885 INFO L82 PathProgramCache]: Analyzing trace with hash 849405708, now seen corresponding path program 1 times [2019-10-02 01:10:54,887 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 01:10:54,887 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 01:10:54,889 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 01:10:54,889 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 01:10:54,890 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 01:10:54,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 01:10:55,698 INFO L134 CoverageAnalysis]: Checked inductivity of 769 backedges. 457 proven. 209 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2019-10-02 01:10:55,699 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 01:10:55,699 INFO L224 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 [2019-10-02 01:10:55,759 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 01:10:55,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 01:10:55,945 INFO L256 TraceCheckSpWp]: Trace formula consists of 759 conjuncts, 10 conjunts are in the unsatisfiable core [2019-10-02 01:10:55,957 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 01:10:56,012 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-02 01:10:56,224 INFO L134 CoverageAnalysis]: Checked inductivity of 769 backedges. 462 proven. 2 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (7)] Exception during sending of exit command (exit): Broken pipe [2019-10-02 01:10:56,236 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-02 01:10:56,237 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 5] total 14 [2019-10-02 01:10:56,238 INFO L454 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-02 01:10:56,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-02 01:10:56,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2019-10-02 01:10:56,238 INFO L87 Difference]: Start difference. First operand 30917 states and 41400 transitions. Second operand 14 states. [2019-10-02 01:11:16,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 01:11:16,121 INFO L93 Difference]: Finished difference Result 88749 states and 119590 transitions. [2019-10-02 01:11:16,126 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2019-10-02 01:11:16,126 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 471 [2019-10-02 01:11:16,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 01:11:16,352 INFO L225 Difference]: With dead ends: 88749 [2019-10-02 01:11:16,352 INFO L226 Difference]: Without dead ends: 57438 [2019-10-02 01:11:16,434 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 727 GetRequests, 584 SyntacticMatches, 0 SemanticMatches, 143 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8364 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=2361, Invalid=18519, Unknown=0, NotChecked=0, Total=20880 [2019-10-02 01:11:16,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57438 states. [2019-10-02 01:11:17,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57438 to 51966. [2019-10-02 01:11:17,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51966 states. [2019-10-02 01:11:17,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51966 states to 51966 states and 69322 transitions. [2019-10-02 01:11:17,501 INFO L78 Accepts]: Start accepts. Automaton has 51966 states and 69322 transitions. Word has length 471 [2019-10-02 01:11:17,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 01:11:17,502 INFO L475 AbstractCegarLoop]: Abstraction has 51966 states and 69322 transitions. [2019-10-02 01:11:17,502 INFO L476 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-10-02 01:11:17,502 INFO L276 IsEmpty]: Start isEmpty. Operand 51966 states and 69322 transitions. [2019-10-02 01:11:17,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 528 [2019-10-02 01:11:17,560 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 01:11:17,561 INFO L411 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 01:11:17,561 INFO L418 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 01:11:17,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 01:11:17,562 INFO L82 PathProgramCache]: Analyzing trace with hash -384832958, now seen corresponding path program 1 times [2019-10-02 01:11:17,562 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 01:11:17,562 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 01:11:17,563 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 01:11:17,563 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 01:11:17,563 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 01:11:17,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 01:11:18,555 INFO L134 CoverageAnalysis]: Checked inductivity of 769 backedges. 522 proven. 159 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2019-10-02 01:11:18,555 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 01:11:18,555 INFO L224 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 [2019-10-02 01:11:18,606 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 01:11:18,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 01:11:18,742 INFO L256 TraceCheckSpWp]: Trace formula consists of 818 conjuncts, 9 conjunts are in the unsatisfiable core [2019-10-02 01:11:18,749 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 01:11:18,779 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-02 01:11:18,780 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-02 01:11:19,209 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-02 01:11:21,124 INFO L134 CoverageAnalysis]: Checked inductivity of 769 backedges. 497 proven. 2 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (8)] Exception during sending of exit command (exit): Broken pipe [2019-10-02 01:11:21,130 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-02 01:11:21,131 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 7] total 18 [2019-10-02 01:11:21,132 INFO L454 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-10-02 01:11:21,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-10-02 01:11:21,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=258, Unknown=1, NotChecked=0, Total=306 [2019-10-02 01:11:21,132 INFO L87 Difference]: Start difference. First operand 51966 states and 69322 transitions. Second operand 18 states. [2019-10-02 01:11:29,533 WARN L191 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 32 [2019-10-02 01:11:36,136 WARN L191 SmtUtils]: Spent 5.32 s on a formula simplification. DAG size of input: 43 DAG size of output: 30 [2019-10-02 01:11:59,978 WARN L191 SmtUtils]: Spent 4.70 s on a formula simplification. DAG size of input: 40 DAG size of output: 27 [2019-10-02 01:12:16,918 WARN L191 SmtUtils]: Spent 6.51 s on a formula simplification. DAG size of input: 38 DAG size of output: 25 [2019-10-02 01:12:34,175 WARN L191 SmtUtils]: Spent 4.84 s on a formula simplification. DAG size of input: 48 DAG size of output: 35 [2019-10-02 01:12:47,757 WARN L191 SmtUtils]: Spent 5.59 s on a formula simplification. DAG size of input: 33 DAG size of output: 20 [2019-10-02 01:12:56,875 WARN L191 SmtUtils]: Spent 5.60 s on a formula simplification. DAG size of input: 33 DAG size of output: 20 [2019-10-02 01:13:57,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 01:13:57,461 INFO L93 Difference]: Finished difference Result 183864 states and 251772 transitions. [2019-10-02 01:13:57,461 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 174 states. [2019-10-02 01:13:57,462 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 527 [2019-10-02 01:13:57,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 01:13:58,068 INFO L225 Difference]: With dead ends: 183864 [2019-10-02 01:13:58,068 INFO L226 Difference]: Without dead ends: 131862 [2019-10-02 01:13:58,204 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 793 GetRequests, 601 SyntacticMatches, 8 SemanticMatches, 184 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14907 ImplicationChecksByTransitivity, 53.6s TimeCoverageRelationStatistics Valid=4032, Invalid=30370, Unknown=8, NotChecked=0, Total=34410 [2019-10-02 01:13:58,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131862 states. [2019-10-02 01:14:00,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131862 to 122929. [2019-10-02 01:14:00,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122929 states. [2019-10-02 01:14:01,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122929 states to 122929 states and 155740 transitions. [2019-10-02 01:14:01,140 INFO L78 Accepts]: Start accepts. Automaton has 122929 states and 155740 transitions. Word has length 527 [2019-10-02 01:14:01,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 01:14:01,141 INFO L475 AbstractCegarLoop]: Abstraction has 122929 states and 155740 transitions. [2019-10-02 01:14:01,141 INFO L476 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-10-02 01:14:01,141 INFO L276 IsEmpty]: Start isEmpty. Operand 122929 states and 155740 transitions. [2019-10-02 01:14:01,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 632 [2019-10-02 01:14:01,268 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 01:14:01,268 INFO L411 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 01:14:01,268 INFO L418 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 01:14:01,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 01:14:01,269 INFO L82 PathProgramCache]: Analyzing trace with hash 1318371024, now seen corresponding path program 1 times [2019-10-02 01:14:01,269 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 01:14:01,269 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 01:14:01,270 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 01:14:01,270 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 01:14:01,270 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 01:14:01,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 01:14:02,115 INFO L134 CoverageAnalysis]: Checked inductivity of 1185 backedges. 736 proven. 256 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2019-10-02 01:14:02,116 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 01:14:02,116 INFO L224 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 [2019-10-02 01:14:02,161 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 01:14:02,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 01:14:02,316 INFO L256 TraceCheckSpWp]: Trace formula consists of 963 conjuncts, 9 conjunts are in the unsatisfiable core [2019-10-02 01:14:02,325 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 01:14:02,370 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-02 01:14:02,370 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-02 01:14:06,681 INFO L134 CoverageAnalysis]: Checked inductivity of 1185 backedges. 669 proven. 82 refuted. 0 times theorem prover too weak. 434 trivial. 0 not checked. [2019-10-02 01:14:06,685 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-02 01:14:06,686 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 8] total 18 [2019-10-02 01:14:06,687 INFO L454 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-10-02 01:14:06,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-10-02 01:14:06,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=259, Unknown=1, NotChecked=0, Total=306 [2019-10-02 01:14:06,688 INFO L87 Difference]: Start difference. First operand 122929 states and 155740 transitions. Second operand 18 states. [2019-10-02 01:14:09,262 WARN L191 SmtUtils]: Spent 222.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2019-10-02 01:14:12,305 WARN L191 SmtUtils]: Spent 656.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 27 [2019-10-02 01:14:12,517 WARN L191 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 20 [2019-10-02 01:14:34,129 WARN L191 SmtUtils]: Spent 458.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2019-10-02 01:17:54,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 01:17:54,638 INFO L93 Difference]: Finished difference Result 309870 states and 398787 transitions. [2019-10-02 01:17:54,638 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 142 states. [2019-10-02 01:17:54,638 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 631 [2019-10-02 01:17:54,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 01:17:55,277 INFO L225 Difference]: With dead ends: 309870 [2019-10-02 01:17:55,277 INFO L226 Difference]: Without dead ends: 193101 [2019-10-02 01:17:55,493 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 852 GetRequests, 702 SyntacticMatches, 1 SemanticMatches, 149 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9296 ImplicationChecksByTransitivity, 25.5s TimeCoverageRelationStatistics Valid=3409, Invalid=19219, Unknown=22, NotChecked=0, Total=22650 [2019-10-02 01:17:55,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193101 states. [2019-10-02 01:18:01,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193101 to 176746. [2019-10-02 01:18:01,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176746 states. [2019-10-02 01:18:02,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176746 states to 176746 states and 216078 transitions. [2019-10-02 01:18:02,529 INFO L78 Accepts]: Start accepts. Automaton has 176746 states and 216078 transitions. Word has length 631 [2019-10-02 01:18:02,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 01:18:02,530 INFO L475 AbstractCegarLoop]: Abstraction has 176746 states and 216078 transitions. [2019-10-02 01:18:02,530 INFO L476 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-10-02 01:18:02,530 INFO L276 IsEmpty]: Start isEmpty. Operand 176746 states and 216078 transitions. [2019-10-02 01:18:02,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 708 [2019-10-02 01:18:02,750 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 01:18:02,751 INFO L411 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 01:18:02,751 INFO L418 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 01:18:02,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 01:18:02,751 INFO L82 PathProgramCache]: Analyzing trace with hash -611325102, now seen corresponding path program 1 times [2019-10-02 01:18:02,752 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 01:18:02,752 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 01:18:02,753 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 01:18:02,754 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 01:18:02,754 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 01:18:02,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 01:18:06,085 INFO L134 CoverageAnalysis]: Checked inductivity of 1344 backedges. 676 proven. 580 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2019-10-02 01:18:06,086 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 01:18:06,086 INFO L224 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 [2019-10-02 01:18:06,140 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 01:18:06,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 01:18:06,322 INFO L256 TraceCheckSpWp]: Trace formula consists of 1038 conjuncts, 19 conjunts are in the unsatisfiable core [2019-10-02 01:18:06,331 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 01:18:06,456 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-10-02 01:18:06,504 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-02 01:18:06,505 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-02 01:18:06,506 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-02 01:18:06,506 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-02 01:18:09,752 INFO L134 CoverageAnalysis]: Checked inductivity of 1344 backedges. 937 proven. 223 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2019-10-02 01:18:09,758 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-02 01:18:09,759 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 11] total 29 [2019-10-02 01:18:09,760 INFO L454 AbstractCegarLoop]: Interpolant automaton has 29 states [2019-10-02 01:18:09,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2019-10-02 01:18:09,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=717, Unknown=0, NotChecked=0, Total=812 [2019-10-02 01:18:09,761 INFO L87 Difference]: Start difference. First operand 176746 states and 216078 transitions. Second operand 29 states. [2019-10-02 01:18:24,840 WARN L191 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2019-10-02 01:18:53,171 WARN L191 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 51 [2019-10-02 01:19:07,711 WARN L191 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 49 [2019-10-02 01:19:16,442 WARN L191 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 49 [2019-10-02 01:19:23,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 01:19:23,910 INFO L93 Difference]: Finished difference Result 430987 states and 525857 transitions. [2019-10-02 01:19:23,911 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 272 states. [2019-10-02 01:19:23,911 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 707 [2019-10-02 01:19:23,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 01:19:24,766 INFO L225 Difference]: With dead ends: 430987 [2019-10-02 01:19:24,766 INFO L226 Difference]: Without dead ends: 255765 [2019-10-02 01:19:25,053 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 1041 GetRequests, 740 SyntacticMatches, 4 SemanticMatches, 297 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38193 ImplicationChecksByTransitivity, 20.7s TimeCoverageRelationStatistics Valid=10438, Invalid=78664, Unknown=0, NotChecked=0, Total=89102 [2019-10-02 01:19:25,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255765 states. [2019-10-02 01:19:34,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255765 to 225614. [2019-10-02 01:19:34,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225614 states. [2019-10-02 01:19:34,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225614 states to 225614 states and 267085 transitions. [2019-10-02 01:19:34,903 INFO L78 Accepts]: Start accepts. Automaton has 225614 states and 267085 transitions. Word has length 707 [2019-10-02 01:19:34,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 01:19:34,903 INFO L475 AbstractCegarLoop]: Abstraction has 225614 states and 267085 transitions. [2019-10-02 01:19:34,903 INFO L476 AbstractCegarLoop]: Interpolant automaton has 29 states. [2019-10-02 01:19:34,903 INFO L276 IsEmpty]: Start isEmpty. Operand 225614 states and 267085 transitions. [2019-10-02 01:19:35,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 752 [2019-10-02 01:19:35,109 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 01:19:35,109 INFO L411 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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] [2019-10-02 01:19:35,109 INFO L418 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 01:19:35,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 01:19:35,110 INFO L82 PathProgramCache]: Analyzing trace with hash -997356199, now seen corresponding path program 1 times [2019-10-02 01:19:35,110 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-10-02 01:19:35,110 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-10-02 01:19:35,112 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 01:19:35,112 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 01:19:35,112 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 01:19:35,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 01:19:37,428 INFO L134 CoverageAnalysis]: Checked inductivity of 1693 backedges. 1294 proven. 159 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2019-10-02 01:19:37,429 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 01:19:37,429 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-10-02 01:19:37,494 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 01:19:37,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 01:19:37,678 INFO L256 TraceCheckSpWp]: Trace formula consists of 1124 conjuncts, 28 conjunts are in the unsatisfiable core [2019-10-02 01:19:37,687 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-02 01:19:37,801 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-02 01:19:37,802 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-02 01:19:37,802 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-02 01:19:37,803 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-02 01:19:37,804 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-02 01:19:37,927 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-02 01:19:37,928 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-02 01:19:37,929 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-02 01:19:37,930 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-02 01:19:37,930 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-02 01:19:37,931 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-02 01:19:37,932 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-02 01:19:37,932 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-02 01:19:37,933 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-02 01:19:47,306 WARN L191 SmtUtils]: Spent 9.29 s on a formula simplification. DAG size of input: 92 DAG size of output: 54 [2019-10-02 01:19:47,353 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-02 01:19:48,228 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 5 terms [2019-10-02 01:19:49,798 INFO L134 CoverageAnalysis]: Checked inductivity of 1693 backedges. 914 proven. 128 refuted. 0 times theorem prover too weak. 651 trivial. 0 not checked. [2019-10-02 01:19:49,802 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-02 01:19:49,803 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 20 [2019-10-02 01:19:49,803 INFO L454 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-10-02 01:19:49,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-10-02 01:19:49,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=327, Unknown=1, NotChecked=0, Total=380 [2019-10-02 01:19:49,804 INFO L87 Difference]: Start difference. First operand 225614 states and 267085 transitions. Second operand 20 states. [2019-10-02 01:19:55,737 WARN L191 SmtUtils]: Spent 1.48 s on a formula simplification. DAG size of input: 74 DAG size of output: 69 [2019-10-02 01:19:56,741 WARN L191 SmtUtils]: Spent 837.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 57 [2019-10-02 01:19:58,398 WARN L191 SmtUtils]: Spent 1.51 s on a formula simplification. DAG size of input: 76 DAG size of output: 63 [2019-10-02 01:20:01,860 WARN L191 SmtUtils]: Spent 2.31 s on a formula simplification. DAG size of input: 55 DAG size of output: 36 [2019-10-02 01:20:21,570 WARN L191 SmtUtils]: Spent 10.82 s on a formula simplification. DAG size of input: 104 DAG size of output: 99 [2019-10-02 01:20:25,614 WARN L191 SmtUtils]: Spent 1.27 s on a formula simplification. DAG size of input: 72 DAG size of output: 61 [2019-10-02 01:20:31,820 WARN L191 SmtUtils]: Spent 2.00 s on a formula simplification. DAG size of input: 90 DAG size of output: 85 [2019-10-02 01:20:41,410 WARN L191 SmtUtils]: Spent 7.71 s on a formula simplification. DAG size of input: 86 DAG size of output: 86 [2019-10-02 01:20:47,873 WARN L191 SmtUtils]: Spent 1.53 s on a formula simplification. DAG size of input: 81 DAG size of output: 76 [2019-10-02 01:20:56,650 WARN L191 SmtUtils]: Spent 7.48 s on a formula simplification. DAG size of input: 94 DAG size of output: 94 [2019-10-02 01:20:57,736 WARN L191 SmtUtils]: Spent 700.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 48 [2019-10-02 01:21:04,288 WARN L191 SmtUtils]: Spent 679.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 46 [2019-10-02 01:21:09,242 WARN L191 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 57 [2019-10-02 01:21:10,417 WARN L191 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 80 DAG size of output: 80 [2019-10-02 01:21:18,291 WARN L191 SmtUtils]: Spent 5.47 s on a formula simplification. DAG size of input: 77 DAG size of output: 77 [2019-10-02 01:21:22,408 WARN L191 SmtUtils]: Spent 610.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 40 [2019-10-02 01:21:41,271 WARN L191 SmtUtils]: Spent 16.00 s on a formula simplification. DAG size of input: 87 DAG size of output: 86 [2019-10-02 01:21:52,213 WARN L191 SmtUtils]: Spent 646.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 44 [2019-10-02 01:22:11,783 WARN L191 SmtUtils]: Spent 13.01 s on a formula simplification. DAG size of input: 88 DAG size of output: 88 [2019-10-02 01:22:25,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 01:22:25,226 INFO L93 Difference]: Finished difference Result 525186 states and 626004 transitions. [2019-10-02 01:22:25,227 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 166 states. [2019-10-02 01:22:25,227 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 751 [2019-10-02 01:22:25,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 01:22:25,228 INFO L225 Difference]: With dead ends: 525186 [2019-10-02 01:22:25,228 INFO L226 Difference]: Without dead ends: 0 [2019-10-02 01:22:25,876 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 1067 GetRequests, 884 SyntacticMatches, 4 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14366 ImplicationChecksByTransitivity, 95.0s TimeCoverageRelationStatistics Valid=4800, Invalid=27779, Unknown=1, NotChecked=0, Total=32580 [2019-10-02 01:22:25,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-02 01:22:25,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-02 01:22:25,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-02 01:22:25,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-02 01:22:25,882 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 751 [2019-10-02 01:22:25,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 01:22:25,882 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-02 01:22:25,882 INFO L476 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-10-02 01:22:25,882 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-02 01:22:25,882 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-02 01:22:25,887 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-02 01:22:27,723 WARN L191 SmtUtils]: Spent 660.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 72