java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr.3.1.ufo.BOUNDED-6.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-08 07:46:33,322 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-08 07:46:33,324 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-08 07:46:33,337 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-08 07:46:33,347 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-08 07:46:33,348 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-08 07:46:33,349 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-08 07:46:33,350 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-08 07:46:33,351 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-08 07:46:33,352 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-08 07:46:33,354 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-08 07:46:33,356 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-08 07:46:33,357 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-08 07:46:33,359 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-08 07:46:33,360 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-08 07:46:33,361 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-08 07:46:33,363 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-08 07:46:33,371 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-08 07:46:33,372 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-08 07:46:33,373 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-08 07:46:33,374 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-09-08 07:46:33,389 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-08 07:46:33,390 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-08 07:46:33,391 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-08 07:46:33,391 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-08 07:46:33,391 INFO L138 SettingsManager]: * Use SBE=true [2019-09-08 07:46:33,392 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-08 07:46:33,392 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-08 07:46:33,392 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-08 07:46:33,392 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-08 07:46:33,392 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-08 07:46:33,393 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-08 07:46:33,393 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-08 07:46:33,393 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-08 07:46:33,393 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-08 07:46:33,393 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-08 07:46:33,394 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-08 07:46:33,394 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-08 07:46:33,394 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-08 07:46:33,394 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-08 07:46:33,395 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-08 07:46:33,395 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-08 07:46:33,395 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-08 07:46:33,395 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-08 07:46:33,395 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-08 07:46:33,396 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-08 07:46:33,396 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-08 07:46:33,396 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-08 07:46:33,396 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-08 07:46:33,397 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-08 07:46:33,426 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-08 07:46:33,438 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-08 07:46:33,442 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-08 07:46:33,443 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-08 07:46:33,444 INFO L275 PluginConnector]: CDTParser initialized [2019-09-08 07:46:33,444 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr.3.1.ufo.BOUNDED-6.pals.c [2019-09-08 07:46:33,508 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9ac19328/ca67cfbcab1547d8b8478c83a75a1d99/FLAG614603341 [2019-09-08 07:46:33,960 INFO L306 CDTParser]: Found 1 translation units. [2019-09-08 07:46:33,961 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr.3.1.ufo.BOUNDED-6.pals.c [2019-09-08 07:46:33,971 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9ac19328/ca67cfbcab1547d8b8478c83a75a1d99/FLAG614603341 [2019-09-08 07:46:34,342 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d9ac19328/ca67cfbcab1547d8b8478c83a75a1d99 [2019-09-08 07:46:34,352 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-08 07:46:34,354 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-08 07:46:34,355 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-08 07:46:34,355 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-08 07:46:34,361 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-08 07:46:34,362 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 07:46:34" (1/1) ... [2019-09-08 07:46:34,364 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76a4378 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:46:34, skipping insertion in model container [2019-09-08 07:46:34,365 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 07:46:34" (1/1) ... [2019-09-08 07:46:34,373 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-08 07:46:34,414 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-08 07:46:34,713 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 07:46:34,818 INFO L188 MainTranslator]: Completed pre-run [2019-09-08 07:46:34,866 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 07:46:34,885 INFO L192 MainTranslator]: Completed translation [2019-09-08 07:46:34,885 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:46:34 WrapperNode [2019-09-08 07:46:34,885 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-08 07:46:34,886 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-08 07:46:34,886 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-08 07:46:34,886 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-08 07:46:34,897 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:46:34" (1/1) ... [2019-09-08 07:46:34,897 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:46:34" (1/1) ... [2019-09-08 07:46:34,904 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:46:34" (1/1) ... [2019-09-08 07:46:34,905 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:46:34" (1/1) ... [2019-09-08 07:46:34,914 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:46:34" (1/1) ... [2019-09-08 07:46:34,923 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:46:34" (1/1) ... [2019-09-08 07:46:34,926 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:46:34" (1/1) ... [2019-09-08 07:46:34,929 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-08 07:46:34,930 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-08 07:46:34,930 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-08 07:46:34,930 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-08 07:46:34,931 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:46:34" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-08 07:46:34,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-08 07:46:34,989 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-08 07:46:34,989 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2019-09-08 07:46:34,989 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2019-09-08 07:46:34,989 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2019-09-08 07:46:34,989 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2019-09-08 07:46:34,990 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2019-09-08 07:46:34,990 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-08 07:46:34,990 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2019-09-08 07:46:34,991 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-08 07:46:34,991 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-09-08 07:46:34,991 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-09-08 07:46:34,992 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2019-09-08 07:46:34,993 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-09-08 07:46:34,994 INFO L130 BoogieDeclarations]: Found specification of procedure read [2019-09-08 07:46:34,994 INFO L130 BoogieDeclarations]: Found specification of procedure write [2019-09-08 07:46:34,996 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2019-09-08 07:46:34,997 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2019-09-08 07:46:34,997 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2019-09-08 07:46:34,997 INFO L130 BoogieDeclarations]: Found specification of procedure init [2019-09-08 07:46:34,997 INFO L130 BoogieDeclarations]: Found specification of procedure check [2019-09-08 07:46:34,997 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-08 07:46:34,997 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-08 07:46:34,998 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-08 07:46:35,466 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-08 07:46:35,467 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-08 07:46:35,468 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 07:46:35 BoogieIcfgContainer [2019-09-08 07:46:35,468 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-08 07:46:35,469 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-08 07:46:35,469 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-08 07:46:35,472 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-08 07:46:35,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.09 07:46:34" (1/3) ... [2019-09-08 07:46:35,474 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1448d62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 07:46:35, skipping insertion in model container [2019-09-08 07:46:35,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 07:46:34" (2/3) ... [2019-09-08 07:46:35,474 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1448d62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 07:46:35, skipping insertion in model container [2019-09-08 07:46:35,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 07:46:35" (3/3) ... [2019-09-08 07:46:35,476 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.1.ufo.BOUNDED-6.pals.c [2019-09-08 07:46:35,486 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-08 07:46:35,494 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-08 07:46:35,510 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-08 07:46:35,542 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-08 07:46:35,543 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-08 07:46:35,543 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-08 07:46:35,543 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-08 07:46:35,543 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-08 07:46:35,544 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-08 07:46:35,544 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-08 07:46:35,544 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-08 07:46:35,544 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-08 07:46:35,565 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states. [2019-09-08 07:46:35,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-09-08 07:46:35,573 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:46:35,574 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:46:35,576 INFO L418 AbstractCegarLoop]: === Iteration 1 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:46:35,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:46:35,583 INFO L82 PathProgramCache]: Analyzing trace with hash -670022, now seen corresponding path program 1 times [2019-09-08 07:46:35,585 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:46:35,586 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:46:35,642 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:46:35,642 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:46:35,643 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:46:35,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:46:36,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:46:36,028 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 07:46:36,029 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 07:46:36,037 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 07:46:36,054 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 07:46:36,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-08 07:46:36,058 INFO L87 Difference]: Start difference. First operand 87 states. Second operand 5 states. [2019-09-08 07:46:36,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:46:36,192 INFO L93 Difference]: Finished difference Result 150 states and 211 transitions. [2019-09-08 07:46:36,193 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 07:46:36,194 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 47 [2019-09-08 07:46:36,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:46:36,209 INFO L225 Difference]: With dead ends: 150 [2019-09-08 07:46:36,209 INFO L226 Difference]: Without dead ends: 82 [2019-09-08 07:46:36,217 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-08 07:46:36,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2019-09-08 07:46:36,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2019-09-08 07:46:36,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2019-09-08 07:46:36,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 102 transitions. [2019-09-08 07:46:36,287 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 102 transitions. Word has length 47 [2019-09-08 07:46:36,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:46:36,287 INFO L475 AbstractCegarLoop]: Abstraction has 82 states and 102 transitions. [2019-09-08 07:46:36,288 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 07:46:36,288 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 102 transitions. [2019-09-08 07:46:36,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2019-09-08 07:46:36,293 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:46:36,293 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:46:36,293 INFO L418 AbstractCegarLoop]: === Iteration 2 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:46:36,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:46:36,294 INFO L82 PathProgramCache]: Analyzing trace with hash 525570851, now seen corresponding path program 1 times [2019-09-08 07:46:36,295 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:46:36,295 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:46:36,301 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:46:36,302 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:46:36,302 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:46:36,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:46:36,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:46:36,699 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 07:46:36,700 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-09-08 07:46:36,702 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-08 07:46:36,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-08 07:46:36,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-08 07:46:36,704 INFO L87 Difference]: Start difference. First operand 82 states and 102 transitions. Second operand 9 states. [2019-09-08 07:46:38,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:46:38,370 INFO L93 Difference]: Finished difference Result 463 states and 651 transitions. [2019-09-08 07:46:38,372 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2019-09-08 07:46:38,372 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2019-09-08 07:46:38,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:46:38,381 INFO L225 Difference]: With dead ends: 463 [2019-09-08 07:46:38,381 INFO L226 Difference]: Without dead ends: 409 [2019-09-08 07:46:38,383 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=181, Invalid=469, Unknown=0, NotChecked=0, Total=650 [2019-09-08 07:46:38,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2019-09-08 07:46:38,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 250. [2019-09-08 07:46:38,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2019-09-08 07:46:38,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 336 transitions. [2019-09-08 07:46:38,441 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 336 transitions. Word has length 62 [2019-09-08 07:46:38,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:46:38,442 INFO L475 AbstractCegarLoop]: Abstraction has 250 states and 336 transitions. [2019-09-08 07:46:38,442 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-08 07:46:38,442 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 336 transitions. [2019-09-08 07:46:38,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2019-09-08 07:46:38,446 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:46:38,446 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:46:38,446 INFO L418 AbstractCegarLoop]: === Iteration 3 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:46:38,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:46:38,447 INFO L82 PathProgramCache]: Analyzing trace with hash -938666349, now seen corresponding path program 1 times [2019-09-08 07:46:38,447 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:46:38,447 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:46:38,449 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:46:38,449 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:46:38,449 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:46:38,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:46:38,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:46:38,534 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 07:46:38,534 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 07:46:38,534 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 07:46:38,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 07:46:38,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-08 07:46:38,535 INFO L87 Difference]: Start difference. First operand 250 states and 336 transitions. Second operand 5 states. [2019-09-08 07:46:38,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:46:38,887 INFO L93 Difference]: Finished difference Result 827 states and 1143 transitions. [2019-09-08 07:46:38,887 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-08 07:46:38,887 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2019-09-08 07:46:38,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:46:38,892 INFO L225 Difference]: With dead ends: 827 [2019-09-08 07:46:38,893 INFO L226 Difference]: Without dead ends: 605 [2019-09-08 07:46:38,895 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-09-08 07:46:38,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2019-09-08 07:46:38,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 601. [2019-09-08 07:46:38,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 601 states. [2019-09-08 07:46:38,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 808 transitions. [2019-09-08 07:46:38,966 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 808 transitions. Word has length 64 [2019-09-08 07:46:38,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:46:38,967 INFO L475 AbstractCegarLoop]: Abstraction has 601 states and 808 transitions. [2019-09-08 07:46:38,967 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 07:46:38,967 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 808 transitions. [2019-09-08 07:46:38,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2019-09-08 07:46:38,971 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:46:38,971 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:46:38,972 INFO L418 AbstractCegarLoop]: === Iteration 4 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:46:38,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:46:38,972 INFO L82 PathProgramCache]: Analyzing trace with hash 2068598491, now seen corresponding path program 1 times [2019-09-08 07:46:38,972 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:46:38,972 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:46:38,974 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:46:38,974 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:46:38,974 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:46:39,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:46:39,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:46:39,130 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 07:46:39,131 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 07:46:39,131 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 07:46:39,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 07:46:39,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-08 07:46:39,132 INFO L87 Difference]: Start difference. First operand 601 states and 808 transitions. Second operand 5 states. [2019-09-08 07:46:39,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:46:39,487 INFO L93 Difference]: Finished difference Result 1663 states and 2268 transitions. [2019-09-08 07:46:39,490 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-08 07:46:39,491 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2019-09-08 07:46:39,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:46:39,504 INFO L225 Difference]: With dead ends: 1663 [2019-09-08 07:46:39,504 INFO L226 Difference]: Without dead ends: 1090 [2019-09-08 07:46:39,508 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-09-08 07:46:39,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1090 states. [2019-09-08 07:46:39,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1090 to 1088. [2019-09-08 07:46:39,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1088 states. [2019-09-08 07:46:39,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1088 states to 1088 states and 1456 transitions. [2019-09-08 07:46:39,603 INFO L78 Accepts]: Start accepts. Automaton has 1088 states and 1456 transitions. Word has length 64 [2019-09-08 07:46:39,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:46:39,603 INFO L475 AbstractCegarLoop]: Abstraction has 1088 states and 1456 transitions. [2019-09-08 07:46:39,603 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 07:46:39,604 INFO L276 IsEmpty]: Start isEmpty. Operand 1088 states and 1456 transitions. [2019-09-08 07:46:39,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2019-09-08 07:46:39,610 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:46:39,611 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:46:39,611 INFO L418 AbstractCegarLoop]: === Iteration 5 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:46:39,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:46:39,612 INFO L82 PathProgramCache]: Analyzing trace with hash 430370341, now seen corresponding path program 1 times [2019-09-08 07:46:39,612 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:46:39,612 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:46:39,614 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:46:39,615 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:46:39,615 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:46:39,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:46:39,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:46:39,759 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 07:46:39,759 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-08 07:46:39,759 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-08 07:46:39,760 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-08 07:46:39,760 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-08 07:46:39,760 INFO L87 Difference]: Start difference. First operand 1088 states and 1456 transitions. Second operand 5 states. [2019-09-08 07:46:40,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:46:40,114 INFO L93 Difference]: Finished difference Result 3058 states and 4124 transitions. [2019-09-08 07:46:40,115 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-08 07:46:40,115 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 64 [2019-09-08 07:46:40,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:46:40,127 INFO L225 Difference]: With dead ends: 3058 [2019-09-08 07:46:40,127 INFO L226 Difference]: Without dead ends: 1998 [2019-09-08 07:46:40,131 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-09-08 07:46:40,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1998 states. [2019-09-08 07:46:40,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1998 to 1996. [2019-09-08 07:46:40,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1996 states. [2019-09-08 07:46:40,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1996 states to 1996 states and 2639 transitions. [2019-09-08 07:46:40,246 INFO L78 Accepts]: Start accepts. Automaton has 1996 states and 2639 transitions. Word has length 64 [2019-09-08 07:46:40,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:46:40,246 INFO L475 AbstractCegarLoop]: Abstraction has 1996 states and 2639 transitions. [2019-09-08 07:46:40,246 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-08 07:46:40,247 INFO L276 IsEmpty]: Start isEmpty. Operand 1996 states and 2639 transitions. [2019-09-08 07:46:40,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2019-09-08 07:46:40,248 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:46:40,248 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:46:40,248 INFO L418 AbstractCegarLoop]: === Iteration 6 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:46:40,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:46:40,249 INFO L82 PathProgramCache]: Analyzing trace with hash 1626115611, now seen corresponding path program 1 times [2019-09-08 07:46:40,249 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:46:40,249 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:46:40,250 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:46:40,251 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:46:40,251 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:46:40,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:46:40,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:46:40,403 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 07:46:40,404 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-09-08 07:46:40,404 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-08 07:46:40,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-08 07:46:40,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-08 07:46:40,406 INFO L87 Difference]: Start difference. First operand 1996 states and 2639 transitions. Second operand 9 states. [2019-09-08 07:46:41,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:46:41,729 INFO L93 Difference]: Finished difference Result 4184 states and 5671 transitions. [2019-09-08 07:46:41,729 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-09-08 07:46:41,730 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2019-09-08 07:46:41,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:46:41,745 INFO L225 Difference]: With dead ends: 4184 [2019-09-08 07:46:41,745 INFO L226 Difference]: Without dead ends: 2216 [2019-09-08 07:46:41,751 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=165, Invalid=435, Unknown=0, NotChecked=0, Total=600 [2019-09-08 07:46:41,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2216 states. [2019-09-08 07:46:41,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2216 to 1988. [2019-09-08 07:46:41,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1988 states. [2019-09-08 07:46:41,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1988 states to 1988 states and 2611 transitions. [2019-09-08 07:46:41,902 INFO L78 Accepts]: Start accepts. Automaton has 1988 states and 2611 transitions. Word has length 64 [2019-09-08 07:46:41,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:46:41,902 INFO L475 AbstractCegarLoop]: Abstraction has 1988 states and 2611 transitions. [2019-09-08 07:46:41,902 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-08 07:46:41,903 INFO L276 IsEmpty]: Start isEmpty. Operand 1988 states and 2611 transitions. [2019-09-08 07:46:41,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2019-09-08 07:46:41,904 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:46:41,904 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:46:41,904 INFO L418 AbstractCegarLoop]: === Iteration 7 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:46:41,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:46:41,905 INFO L82 PathProgramCache]: Analyzing trace with hash 1591892951, now seen corresponding path program 1 times [2019-09-08 07:46:41,905 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:46:41,905 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:46:41,906 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:46:41,906 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:46:41,907 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:46:41,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:46:42,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:46:42,021 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 07:46:42,021 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-09-08 07:46:42,022 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-08 07:46:42,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-08 07:46:42,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-09-08 07:46:42,024 INFO L87 Difference]: Start difference. First operand 1988 states and 2611 transitions. Second operand 9 states. [2019-09-08 07:46:42,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:46:42,700 INFO L93 Difference]: Finished difference Result 3803 states and 5036 transitions. [2019-09-08 07:46:42,700 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-08 07:46:42,700 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 64 [2019-09-08 07:46:42,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:46:42,713 INFO L225 Difference]: With dead ends: 3803 [2019-09-08 07:46:42,714 INFO L226 Difference]: Without dead ends: 2349 [2019-09-08 07:46:42,719 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2019-09-08 07:46:42,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2349 states. [2019-09-08 07:46:42,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2349 to 2013. [2019-09-08 07:46:42,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2013 states. [2019-09-08 07:46:42,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2013 states to 2013 states and 2643 transitions. [2019-09-08 07:46:42,890 INFO L78 Accepts]: Start accepts. Automaton has 2013 states and 2643 transitions. Word has length 64 [2019-09-08 07:46:42,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:46:42,891 INFO L475 AbstractCegarLoop]: Abstraction has 2013 states and 2643 transitions. [2019-09-08 07:46:42,891 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-08 07:46:42,891 INFO L276 IsEmpty]: Start isEmpty. Operand 2013 states and 2643 transitions. [2019-09-08 07:46:42,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-09-08 07:46:42,892 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:46:42,892 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:46:42,892 INFO L418 AbstractCegarLoop]: === Iteration 8 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:46:42,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:46:42,893 INFO L82 PathProgramCache]: Analyzing trace with hash -2094864628, now seen corresponding path program 1 times [2019-09-08 07:46:42,893 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:46:42,893 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:46:42,894 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:46:42,894 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:46:42,895 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:46:42,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:46:42,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:46:42,990 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 07:46:42,991 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-09-08 07:46:42,991 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-08 07:46:42,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-08 07:46:42,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-08 07:46:42,992 INFO L87 Difference]: Start difference. First operand 2013 states and 2643 transitions. Second operand 8 states. [2019-09-08 07:46:43,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:46:43,158 INFO L93 Difference]: Finished difference Result 2500 states and 3438 transitions. [2019-09-08 07:46:43,159 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-08 07:46:43,159 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 65 [2019-09-08 07:46:43,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:46:43,175 INFO L225 Difference]: With dead ends: 2500 [2019-09-08 07:46:43,175 INFO L226 Difference]: Without dead ends: 2498 [2019-09-08 07:46:43,177 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2019-09-08 07:46:43,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2498 states. [2019-09-08 07:46:43,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2498 to 2229. [2019-09-08 07:46:43,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2229 states. [2019-09-08 07:46:43,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2229 states to 2229 states and 2863 transitions. [2019-09-08 07:46:43,355 INFO L78 Accepts]: Start accepts. Automaton has 2229 states and 2863 transitions. Word has length 65 [2019-09-08 07:46:43,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:46:43,356 INFO L475 AbstractCegarLoop]: Abstraction has 2229 states and 2863 transitions. [2019-09-08 07:46:43,356 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-08 07:46:43,356 INFO L276 IsEmpty]: Start isEmpty. Operand 2229 states and 2863 transitions. [2019-09-08 07:46:43,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2019-09-08 07:46:43,357 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:46:43,358 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:46:43,358 INFO L418 AbstractCegarLoop]: === Iteration 9 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:46:43,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:46:43,359 INFO L82 PathProgramCache]: Analyzing trace with hash 534608897, now seen corresponding path program 1 times [2019-09-08 07:46:43,359 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:46:43,359 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:46:43,360 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:46:43,361 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:46:43,361 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:46:43,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:46:43,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:46:43,469 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 07:46:43,469 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-08 07:46:43,470 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-08 07:46:43,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-08 07:46:43,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-09-08 07:46:43,471 INFO L87 Difference]: Start difference. First operand 2229 states and 2863 transitions. Second operand 7 states. [2019-09-08 07:46:44,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:46:44,045 INFO L93 Difference]: Finished difference Result 4701 states and 6088 transitions. [2019-09-08 07:46:44,046 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-09-08 07:46:44,046 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 65 [2019-09-08 07:46:44,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:46:44,062 INFO L225 Difference]: With dead ends: 4701 [2019-09-08 07:46:44,063 INFO L226 Difference]: Without dead ends: 3064 [2019-09-08 07:46:44,068 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2019-09-08 07:46:44,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3064 states. [2019-09-08 07:46:44,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3064 to 3055. [2019-09-08 07:46:44,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3055 states. [2019-09-08 07:46:44,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3055 states to 3055 states and 3903 transitions. [2019-09-08 07:46:44,242 INFO L78 Accepts]: Start accepts. Automaton has 3055 states and 3903 transitions. Word has length 65 [2019-09-08 07:46:44,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:46:44,243 INFO L475 AbstractCegarLoop]: Abstraction has 3055 states and 3903 transitions. [2019-09-08 07:46:44,243 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-08 07:46:44,243 INFO L276 IsEmpty]: Start isEmpty. Operand 3055 states and 3903 transitions. [2019-09-08 07:46:44,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-09-08 07:46:44,248 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:46:44,249 INFO L399 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:46:44,249 INFO L418 AbstractCegarLoop]: === Iteration 10 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:46:44,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:46:44,250 INFO L82 PathProgramCache]: Analyzing trace with hash -605840881, now seen corresponding path program 1 times [2019-09-08 07:46:44,250 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:46:44,250 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:46:44,251 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:46:44,252 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:46:44,252 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:46:44,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:46:44,336 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-09-08 07:46:44,337 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:46:44,337 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-08 07:46:44,365 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 07:46:44,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:46:44,493 INFO L256 TraceCheckSpWp]: Trace formula consists of 634 conjuncts, 12 conjunts are in the unsatisfiable core [2019-09-08 07:46:44,513 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:46:44,672 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (2)] Exception during sending of exit command (exit): Stream closed [2019-09-08 07:46:44,686 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-08 07:46:44,686 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2019-09-08 07:46:44,687 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-09-08 07:46:44,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-09-08 07:46:44,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-09-08 07:46:44,688 INFO L87 Difference]: Start difference. First operand 3055 states and 3903 transitions. Second operand 10 states. [2019-09-08 07:46:46,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:46:46,239 INFO L93 Difference]: Finished difference Result 6936 states and 8922 transitions. [2019-09-08 07:46:46,239 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-09-08 07:46:46,240 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 103 [2019-09-08 07:46:46,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:46:46,267 INFO L225 Difference]: With dead ends: 6936 [2019-09-08 07:46:46,267 INFO L226 Difference]: Without dead ends: 3925 [2019-09-08 07:46:46,279 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 108 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=175, Invalid=425, Unknown=0, NotChecked=0, Total=600 [2019-09-08 07:46:46,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3925 states. [2019-09-08 07:46:46,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3925 to 3423. [2019-09-08 07:46:46,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3423 states. [2019-09-08 07:46:46,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3423 states to 3423 states and 4301 transitions. [2019-09-08 07:46:46,635 INFO L78 Accepts]: Start accepts. Automaton has 3423 states and 4301 transitions. Word has length 103 [2019-09-08 07:46:46,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:46:46,635 INFO L475 AbstractCegarLoop]: Abstraction has 3423 states and 4301 transitions. [2019-09-08 07:46:46,636 INFO L476 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-09-08 07:46:46,636 INFO L276 IsEmpty]: Start isEmpty. Operand 3423 states and 4301 transitions. [2019-09-08 07:46:46,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-09-08 07:46:46,640 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:46:46,640 INFO L399 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:46:46,640 INFO L418 AbstractCegarLoop]: === Iteration 11 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:46:46,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:46:46,640 INFO L82 PathProgramCache]: Analyzing trace with hash -1341535527, now seen corresponding path program 1 times [2019-09-08 07:46:46,641 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:46:46,641 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:46:46,642 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:46:46,642 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:46:46,642 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:46:46,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:46:46,888 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-09-08 07:46:46,888 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:46:46,888 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 07:46:46,905 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:46:47,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:46:47,004 INFO L256 TraceCheckSpWp]: Trace formula consists of 634 conjuncts, 12 conjunts are in the unsatisfiable core [2019-09-08 07:46:47,023 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:46:47,177 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-08 07:46:47,190 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-08 07:46:47,191 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [13] total 20 [2019-09-08 07:46:47,191 INFO L454 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-09-08 07:46:47,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-09-08 07:46:47,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2019-09-08 07:46:47,192 INFO L87 Difference]: Start difference. First operand 3423 states and 4301 transitions. Second operand 20 states. [2019-09-08 07:46:50,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:46:50,501 INFO L93 Difference]: Finished difference Result 10952 states and 14278 transitions. [2019-09-08 07:46:50,501 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2019-09-08 07:46:50,502 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 103 [2019-09-08 07:46:50,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:46:50,568 INFO L225 Difference]: With dead ends: 10952 [2019-09-08 07:46:50,568 INFO L226 Difference]: Without dead ends: 9446 [2019-09-08 07:46:50,576 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 113 SyntacticMatches, 2 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 675 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=429, Invalid=1923, Unknown=0, NotChecked=0, Total=2352 [2019-09-08 07:46:50,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9446 states. [2019-09-08 07:46:51,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9446 to 9075. [2019-09-08 07:46:51,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9075 states. [2019-09-08 07:46:51,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9075 states to 9075 states and 11539 transitions. [2019-09-08 07:46:51,335 INFO L78 Accepts]: Start accepts. Automaton has 9075 states and 11539 transitions. Word has length 103 [2019-09-08 07:46:51,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:46:51,336 INFO L475 AbstractCegarLoop]: Abstraction has 9075 states and 11539 transitions. [2019-09-08 07:46:51,336 INFO L476 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-09-08 07:46:51,337 INFO L276 IsEmpty]: Start isEmpty. Operand 9075 states and 11539 transitions. [2019-09-08 07:46:51,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2019-09-08 07:46:51,343 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:46:51,344 INFO L399 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:46:51,345 INFO L418 AbstractCegarLoop]: === Iteration 12 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:46:51,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:46:51,345 INFO L82 PathProgramCache]: Analyzing trace with hash -622999899, now seen corresponding path program 1 times [2019-09-08 07:46:51,346 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:46:51,346 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:46:51,348 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:46:51,349 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:46:51,349 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:46:51,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:46:51,613 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-09-08 07:46:51,613 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:46:51,614 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 07:46:51,643 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:46:51,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:46:51,760 INFO L256 TraceCheckSpWp]: Trace formula consists of 634 conjuncts, 12 conjunts are in the unsatisfiable core [2019-09-08 07:46:51,767 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:46:51,955 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-09-08 07:46:51,970 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-08 07:46:51,970 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2019-09-08 07:46:51,971 INFO L454 AbstractCegarLoop]: Interpolant automaton has 17 states [2019-09-08 07:46:51,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2019-09-08 07:46:51,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2019-09-08 07:46:51,974 INFO L87 Difference]: Start difference. First operand 9075 states and 11539 transitions. Second operand 17 states. [2019-09-08 07:46:55,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:46:55,903 INFO L93 Difference]: Finished difference Result 17007 states and 22543 transitions. [2019-09-08 07:46:55,903 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2019-09-08 07:46:55,903 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 103 [2019-09-08 07:46:55,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:46:55,952 INFO L225 Difference]: With dead ends: 17007 [2019-09-08 07:46:55,952 INFO L226 Difference]: Without dead ends: 10364 [2019-09-08 07:46:55,973 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 112 SyntacticMatches, 1 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 528 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=441, Invalid=1629, Unknown=0, NotChecked=0, Total=2070 [2019-09-08 07:46:55,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10364 states. [2019-09-08 07:46:56,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10364 to 9874. [2019-09-08 07:46:56,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9874 states. [2019-09-08 07:46:56,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9874 states to 9874 states and 12711 transitions. [2019-09-08 07:46:56,689 INFO L78 Accepts]: Start accepts. Automaton has 9874 states and 12711 transitions. Word has length 103 [2019-09-08 07:46:56,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:46:56,690 INFO L475 AbstractCegarLoop]: Abstraction has 9874 states and 12711 transitions. [2019-09-08 07:46:56,690 INFO L476 AbstractCegarLoop]: Interpolant automaton has 17 states. [2019-09-08 07:46:56,690 INFO L276 IsEmpty]: Start isEmpty. Operand 9874 states and 12711 transitions. [2019-09-08 07:46:56,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2019-09-08 07:46:56,695 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:46:56,695 INFO L399 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:46:56,695 INFO L418 AbstractCegarLoop]: === Iteration 13 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:46:56,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:46:56,696 INFO L82 PathProgramCache]: Analyzing trace with hash 1567936969, now seen corresponding path program 1 times [2019-09-08 07:46:56,696 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:46:56,696 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:46:56,698 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:46:56,698 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:46:56,698 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:46:56,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:46:56,813 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-09-08 07:46:56,814 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:46:56,814 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-08 07:46:56,836 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 07:46:56,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:46:56,923 INFO L256 TraceCheckSpWp]: Trace formula consists of 633 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-08 07:46:56,931 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:46:57,002 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2019-09-08 07:46:57,022 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-08 07:46:57,022 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2019-09-08 07:46:57,023 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-08 07:46:57,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-08 07:46:57,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-09-08 07:46:57,031 INFO L87 Difference]: Start difference. First operand 9874 states and 12711 transitions. Second operand 8 states. [2019-09-08 07:46:57,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:46:57,995 INFO L93 Difference]: Finished difference Result 18399 states and 23791 transitions. [2019-09-08 07:46:57,996 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-08 07:46:57,996 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 104 [2019-09-08 07:46:57,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:46:58,025 INFO L225 Difference]: With dead ends: 18399 [2019-09-08 07:46:58,025 INFO L226 Difference]: Without dead ends: 9860 [2019-09-08 07:46:58,045 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 105 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2019-09-08 07:46:58,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9860 states. [2019-09-08 07:46:58,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9860 to 9218. [2019-09-08 07:46:58,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9218 states. [2019-09-08 07:46:58,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9218 states to 9218 states and 11525 transitions. [2019-09-08 07:46:58,597 INFO L78 Accepts]: Start accepts. Automaton has 9218 states and 11525 transitions. Word has length 104 [2019-09-08 07:46:58,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:46:58,597 INFO L475 AbstractCegarLoop]: Abstraction has 9218 states and 11525 transitions. [2019-09-08 07:46:58,597 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-08 07:46:58,597 INFO L276 IsEmpty]: Start isEmpty. Operand 9218 states and 11525 transitions. [2019-09-08 07:46:58,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2019-09-08 07:46:58,599 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:46:58,600 INFO L399 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:46:58,600 INFO L418 AbstractCegarLoop]: === Iteration 14 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:46:58,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:46:58,600 INFO L82 PathProgramCache]: Analyzing trace with hash -1219268335, now seen corresponding path program 1 times [2019-09-08 07:46:58,600 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:46:58,600 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:46:58,602 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:46:58,602 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:46:58,602 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:46:58,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:46:58,946 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2019-09-08 07:46:58,946 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:46:58,947 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 07:46:59,622 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:46:59,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:46:59,715 INFO L256 TraceCheckSpWp]: Trace formula consists of 636 conjuncts, 24 conjunts are in the unsatisfiable core [2019-09-08 07:46:59,722 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:46:59,973 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 07:47:00,371 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 18 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (6)] Exception during sending of exit command (exit): Broken pipe [2019-09-08 07:47:00,379 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 07:47:00,380 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 15] total 31 [2019-09-08 07:47:00,380 INFO L454 AbstractCegarLoop]: Interpolant automaton has 31 states [2019-09-08 07:47:00,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2019-09-08 07:47:00,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=835, Unknown=0, NotChecked=0, Total=930 [2019-09-08 07:47:00,381 INFO L87 Difference]: Start difference. First operand 9218 states and 11525 transitions. Second operand 31 states. [2019-09-08 07:47:07,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:47:07,361 INFO L93 Difference]: Finished difference Result 44568 states and 56109 transitions. [2019-09-08 07:47:07,361 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2019-09-08 07:47:07,362 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 105 [2019-09-08 07:47:07,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:47:07,460 INFO L225 Difference]: With dead ends: 44568 [2019-09-08 07:47:07,460 INFO L226 Difference]: Without dead ends: 36478 [2019-09-08 07:47:07,487 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 135 SyntacticMatches, 1 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2929 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1613, Invalid=8287, Unknown=0, NotChecked=0, Total=9900 [2019-09-08 07:47:07,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36478 states. [2019-09-08 07:47:09,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36478 to 33075. [2019-09-08 07:47:09,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33075 states. [2019-09-08 07:47:10,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33075 states to 33075 states and 41758 transitions. [2019-09-08 07:47:10,016 INFO L78 Accepts]: Start accepts. Automaton has 33075 states and 41758 transitions. Word has length 105 [2019-09-08 07:47:10,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:47:10,017 INFO L475 AbstractCegarLoop]: Abstraction has 33075 states and 41758 transitions. [2019-09-08 07:47:10,017 INFO L476 AbstractCegarLoop]: Interpolant automaton has 31 states. [2019-09-08 07:47:10,017 INFO L276 IsEmpty]: Start isEmpty. Operand 33075 states and 41758 transitions. [2019-09-08 07:47:10,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2019-09-08 07:47:10,020 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:47:10,020 INFO L399 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:47:10,021 INFO L418 AbstractCegarLoop]: === Iteration 15 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:47:10,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:47:10,021 INFO L82 PathProgramCache]: Analyzing trace with hash -51256305, now seen corresponding path program 1 times [2019-09-08 07:47:10,021 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:47:10,021 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:47:10,022 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:47:10,022 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:47:10,023 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:47:10,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:47:10,426 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-09-08 07:47:10,426 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:47:10,426 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 07:47:10,444 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:47:10,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:47:10,537 INFO L256 TraceCheckSpWp]: Trace formula consists of 638 conjuncts, 53 conjunts are in the unsatisfiable core [2019-09-08 07:47:10,540 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:47:11,394 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 07:47:11,930 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 21 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:47:11,934 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 07:47:11,935 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 24] total 44 [2019-09-08 07:47:11,935 INFO L454 AbstractCegarLoop]: Interpolant automaton has 44 states [2019-09-08 07:47:11,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2019-09-08 07:47:11,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=1747, Unknown=0, NotChecked=0, Total=1892 [2019-09-08 07:47:11,937 INFO L87 Difference]: Start difference. First operand 33075 states and 41758 transitions. Second operand 44 states. [2019-09-08 07:47:13,593 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2019-09-08 07:47:13,772 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 46 [2019-09-08 07:47:13,950 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 48 [2019-09-08 07:47:14,658 WARN L188 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 48 [2019-09-08 07:47:14,997 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 50 [2019-09-08 07:47:15,165 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 51 [2019-09-08 07:47:15,597 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 53 [2019-09-08 07:47:15,782 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 49 [2019-09-08 07:47:16,336 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 54 [2019-09-08 07:47:16,508 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 51 [2019-09-08 07:47:16,668 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 54 [2019-09-08 07:47:16,804 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 47 [2019-09-08 07:47:16,941 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 44 [2019-09-08 07:47:17,077 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 49 [2019-09-08 07:47:17,262 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 53 [2019-09-08 07:47:17,408 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 48 [2019-09-08 07:47:17,593 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 50 [2019-09-08 07:47:17,731 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 45 [2019-09-08 07:47:18,795 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2019-09-08 07:47:19,050 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 53 [2019-09-08 07:47:19,275 WARN L188 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2019-09-08 07:47:19,449 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2019-09-08 07:47:19,641 WARN L188 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2019-09-08 07:47:20,361 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2019-09-08 07:47:20,529 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 58 [2019-09-08 07:47:20,738 WARN L188 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 61 [2019-09-08 07:47:21,098 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2019-09-08 07:47:21,786 WARN L188 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2019-09-08 07:47:21,936 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 54 [2019-09-08 07:47:22,153 WARN L188 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 60 [2019-09-08 07:47:22,293 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 52 [2019-09-08 07:47:23,282 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2019-09-08 07:47:23,454 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 56 [2019-09-08 07:47:23,604 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 53 [2019-09-08 07:47:23,755 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2019-09-08 07:47:24,279 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2019-09-08 07:47:24,728 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 57 [2019-09-08 07:47:27,910 WARN L188 SmtUtils]: Spent 717.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 35 [2019-09-08 07:47:28,312 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2019-09-08 07:47:28,498 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2019-09-08 07:47:29,052 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2019-09-08 07:47:29,218 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 46 [2019-09-08 07:47:29,400 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2019-09-08 07:47:29,688 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 55 [2019-09-08 07:47:29,863 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 49 [2019-09-08 07:47:30,140 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 57 [2019-09-08 07:47:31,440 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 52 [2019-09-08 07:47:31,635 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 47 [2019-09-08 07:47:32,173 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 50 [2019-09-08 07:47:38,807 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 48 [2019-09-08 07:47:39,260 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 50 [2019-09-08 07:47:41,330 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 50 [2019-09-08 07:47:41,463 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 45 [2019-09-08 07:47:41,877 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 45 [2019-09-08 07:47:42,449 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 52 [2019-09-08 07:47:42,626 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 53 [2019-09-08 07:47:42,767 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 47 [2019-09-08 07:47:43,194 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 47 [2019-09-08 07:47:43,342 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 48 [2019-09-08 07:47:43,741 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 45 [2019-09-08 07:47:43,955 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 55 [2019-09-08 07:47:44,125 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 51 [2019-09-08 07:47:45,094 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 50 [2019-09-08 07:47:46,732 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 47 [2019-09-08 07:47:46,993 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 51 [2019-09-08 07:47:47,135 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 48 [2019-09-08 07:47:47,834 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 52 [2019-09-08 07:47:47,999 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 49 [2019-09-08 07:47:48,137 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 47 [2019-09-08 07:47:48,270 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 44 [2019-09-08 07:47:48,411 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 45 [2019-09-08 07:47:48,599 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 53 [2019-09-08 07:47:48,786 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 56 [2019-09-08 07:47:49,036 WARN L188 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 56 [2019-09-08 07:47:49,225 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2019-09-08 07:47:49,827 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 48 [2019-09-08 07:47:50,001 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 55 [2019-09-08 07:47:50,147 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 46 [2019-09-08 07:47:50,349 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 52 [2019-09-08 07:47:50,511 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 47 [2019-09-08 07:47:50,679 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 50 [2019-09-08 07:47:50,860 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 57 [2019-09-08 07:47:51,063 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 55 [2019-09-08 07:47:51,225 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 50 [2019-09-08 07:47:51,653 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 47 [2019-09-08 07:47:52,002 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 49 [2019-09-08 07:47:52,146 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 44 [2019-09-08 07:47:52,629 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 46 [2019-09-08 07:47:54,114 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2019-09-08 07:47:55,223 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2019-09-08 07:47:55,562 WARN L188 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 49 [2019-09-08 07:48:02,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:48:02,675 INFO L93 Difference]: Finished difference Result 207385 states and 265911 transitions. [2019-09-08 07:48:02,676 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 306 states. [2019-09-08 07:48:02,676 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 105 [2019-09-08 07:48:02,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:48:03,206 INFO L225 Difference]: With dead ends: 207385 [2019-09-08 07:48:03,207 INFO L226 Difference]: Without dead ends: 176109 [2019-09-08 07:48:03,338 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 505 GetRequests, 155 SyntacticMatches, 4 SemanticMatches, 346 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51011 ImplicationChecksByTransitivity, 34.8s TimeCoverageRelationStatistics Valid=13503, Invalid=107253, Unknown=0, NotChecked=0, Total=120756 [2019-09-08 07:48:03,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176109 states. [2019-09-08 07:48:17,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176109 to 162663. [2019-09-08 07:48:17,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162663 states. [2019-09-08 07:48:17,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162663 states to 162663 states and 208919 transitions. [2019-09-08 07:48:17,428 INFO L78 Accepts]: Start accepts. Automaton has 162663 states and 208919 transitions. Word has length 105 [2019-09-08 07:48:17,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:48:17,428 INFO L475 AbstractCegarLoop]: Abstraction has 162663 states and 208919 transitions. [2019-09-08 07:48:17,429 INFO L476 AbstractCegarLoop]: Interpolant automaton has 44 states. [2019-09-08 07:48:17,429 INFO L276 IsEmpty]: Start isEmpty. Operand 162663 states and 208919 transitions. [2019-09-08 07:48:17,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2019-09-08 07:48:17,437 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:48:17,437 INFO L399 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:48:17,440 INFO L418 AbstractCegarLoop]: === Iteration 16 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:48:17,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:48:17,441 INFO L82 PathProgramCache]: Analyzing trace with hash 2036365007, now seen corresponding path program 1 times [2019-09-08 07:48:17,441 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:48:17,441 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:48:17,442 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:48:17,443 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:48:17,443 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:48:17,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:48:17,741 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-09-08 07:48:17,741 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:48:17,741 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 07:48:17,752 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:48:17,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:48:17,843 INFO L256 TraceCheckSpWp]: Trace formula consists of 638 conjuncts, 74 conjunts are in the unsatisfiable core [2019-09-08 07:48:17,847 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:48:18,445 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 07:48:21,964 WARN L188 SmtUtils]: Spent 2.70 s on a formula simplification that was a NOOP. DAG size: 32 [2019-09-08 07:48:22,865 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 21 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:48:22,868 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 07:48:22,869 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 28] total 44 [2019-09-08 07:48:22,869 INFO L454 AbstractCegarLoop]: Interpolant automaton has 44 states [2019-09-08 07:48:22,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2019-09-08 07:48:22,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=226, Invalid=1666, Unknown=0, NotChecked=0, Total=1892 [2019-09-08 07:48:22,870 INFO L87 Difference]: Start difference. First operand 162663 states and 208919 transitions. Second operand 44 states. [2019-09-08 07:48:25,158 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 50 [2019-09-08 07:48:25,608 WARN L188 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 53 [2019-09-08 07:48:25,810 WARN L188 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2019-09-08 07:48:25,947 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 50 [2019-09-08 07:48:26,442 WARN L188 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 53 [2019-09-08 07:48:26,631 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2019-09-08 07:48:27,450 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 52 [2019-09-08 07:48:27,804 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2019-09-08 07:48:27,936 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 49 [2019-09-08 07:48:29,621 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2019-09-08 07:48:29,945 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2019-09-08 07:48:31,628 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 49 [2019-09-08 07:48:35,098 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 45 [2019-09-08 07:48:37,707 WARN L188 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2019-09-08 07:48:38,934 WARN L188 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 55 [2019-09-08 07:48:39,159 WARN L188 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2019-09-08 07:48:39,331 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2019-09-08 07:48:40,211 WARN L188 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 55 [2019-09-08 07:48:40,404 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 49 [2019-09-08 07:48:56,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:48:56,437 INFO L93 Difference]: Finished difference Result 440978 states and 564474 transitions. [2019-09-08 07:48:56,438 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2019-09-08 07:48:56,438 INFO L78 Accepts]: Start accepts. Automaton has 44 states. Word has length 105 [2019-09-08 07:48:56,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:48:57,263 INFO L225 Difference]: With dead ends: 440978 [2019-09-08 07:48:57,263 INFO L226 Difference]: Without dead ends: 286501 [2019-09-08 07:48:57,455 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 118 SyntacticMatches, 4 SemanticMatches, 180 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11678 ImplicationChecksByTransitivity, 16.6s TimeCoverageRelationStatistics Valid=4821, Invalid=28121, Unknown=0, NotChecked=0, Total=32942 [2019-09-08 07:48:57,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286501 states. [2019-09-08 07:49:22,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286501 to 272692. [2019-09-08 07:49:22,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272692 states. [2019-09-08 07:49:23,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272692 states to 272692 states and 349719 transitions. [2019-09-08 07:49:23,134 INFO L78 Accepts]: Start accepts. Automaton has 272692 states and 349719 transitions. Word has length 105 [2019-09-08 07:49:23,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:49:23,134 INFO L475 AbstractCegarLoop]: Abstraction has 272692 states and 349719 transitions. [2019-09-08 07:49:23,134 INFO L476 AbstractCegarLoop]: Interpolant automaton has 44 states. [2019-09-08 07:49:23,134 INFO L276 IsEmpty]: Start isEmpty. Operand 272692 states and 349719 transitions. [2019-09-08 07:49:23,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2019-09-08 07:49:23,143 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:49:23,144 INFO L399 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:49:23,144 INFO L418 AbstractCegarLoop]: === Iteration 17 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:49:23,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:49:23,144 INFO L82 PathProgramCache]: Analyzing trace with hash -1084841209, now seen corresponding path program 1 times [2019-09-08 07:49:23,145 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:49:23,145 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:49:23,146 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:49:23,146 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:49:23,146 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:49:23,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:49:23,206 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-09-08 07:49:23,206 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:49:23,207 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-08 07:49:23,230 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 07:49:23,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:49:23,317 INFO L256 TraceCheckSpWp]: Trace formula consists of 638 conjuncts, 12 conjunts are in the unsatisfiable core [2019-09-08 07:49:23,321 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:49:23,386 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 11 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:49:23,393 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 07:49:23,394 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 8] total 11 [2019-09-08 07:49:23,395 INFO L454 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-09-08 07:49:23,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-09-08 07:49:23,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2019-09-08 07:49:23,396 INFO L87 Difference]: Start difference. First operand 272692 states and 349719 transitions. Second operand 11 states. [2019-09-08 07:49:40,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:49:40,066 INFO L93 Difference]: Finished difference Result 452232 states and 581164 transitions. [2019-09-08 07:49:40,066 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2019-09-08 07:49:40,066 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 105 [2019-09-08 07:49:40,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:49:40,622 INFO L225 Difference]: With dead ends: 452232 [2019-09-08 07:49:40,622 INFO L226 Difference]: Without dead ends: 185890 [2019-09-08 07:49:41,408 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=205, Invalid=665, Unknown=0, NotChecked=0, Total=870 [2019-09-08 07:49:41,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185890 states. [2019-09-08 07:49:57,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185890 to 172073. [2019-09-08 07:49:57,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172073 states. [2019-09-08 07:49:57,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172073 states to 172073 states and 215104 transitions. [2019-09-08 07:49:57,449 INFO L78 Accepts]: Start accepts. Automaton has 172073 states and 215104 transitions. Word has length 105 [2019-09-08 07:49:57,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:49:57,449 INFO L475 AbstractCegarLoop]: Abstraction has 172073 states and 215104 transitions. [2019-09-08 07:49:57,449 INFO L476 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-09-08 07:49:57,449 INFO L276 IsEmpty]: Start isEmpty. Operand 172073 states and 215104 transitions. [2019-09-08 07:49:57,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2019-09-08 07:49:57,458 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:49:57,458 INFO L399 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:49:57,458 INFO L418 AbstractCegarLoop]: === Iteration 18 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:49:57,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:49:57,459 INFO L82 PathProgramCache]: Analyzing trace with hash 1935832783, now seen corresponding path program 1 times [2019-09-08 07:49:57,459 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:49:57,459 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:49:57,460 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:49:57,460 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:49:57,460 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:49:57,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:49:57,518 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-09-08 07:49:57,518 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:49:57,518 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-08 07:49:57,532 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 07:49:57,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:49:57,635 INFO L256 TraceCheckSpWp]: Trace formula consists of 638 conjuncts, 16 conjunts are in the unsatisfiable core [2019-09-08 07:49:57,638 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:49:57,724 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 13 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:49:57,728 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 07:49:57,728 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9] total 12 [2019-09-08 07:49:57,729 INFO L454 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-09-08 07:49:57,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-09-08 07:49:57,729 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2019-09-08 07:49:57,729 INFO L87 Difference]: Start difference. First operand 172073 states and 215104 transitions. Second operand 12 states. [2019-09-08 07:50:06,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:50:06,750 INFO L93 Difference]: Finished difference Result 266230 states and 333180 transitions. [2019-09-08 07:50:06,750 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2019-09-08 07:50:06,750 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 105 [2019-09-08 07:50:06,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:50:07,107 INFO L225 Difference]: With dead ends: 266230 [2019-09-08 07:50:07,107 INFO L226 Difference]: Without dead ends: 98967 [2019-09-08 07:50:07,382 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 118 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 680 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=457, Invalid=1895, Unknown=0, NotChecked=0, Total=2352 [2019-09-08 07:50:07,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98967 states. [2019-09-08 07:50:20,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98967 to 97592. [2019-09-08 07:50:20,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97592 states. [2019-09-08 07:50:20,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97592 states to 97592 states and 118958 transitions. [2019-09-08 07:50:20,817 INFO L78 Accepts]: Start accepts. Automaton has 97592 states and 118958 transitions. Word has length 105 [2019-09-08 07:50:20,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:50:20,818 INFO L475 AbstractCegarLoop]: Abstraction has 97592 states and 118958 transitions. [2019-09-08 07:50:20,818 INFO L476 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-09-08 07:50:20,818 INFO L276 IsEmpty]: Start isEmpty. Operand 97592 states and 118958 transitions. [2019-09-08 07:50:20,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2019-09-08 07:50:20,824 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:50:20,825 INFO L399 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:50:20,825 INFO L418 AbstractCegarLoop]: === Iteration 19 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:50:20,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:50:20,825 INFO L82 PathProgramCache]: Analyzing trace with hash -222523953, now seen corresponding path program 1 times [2019-09-08 07:50:20,825 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:50:20,825 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:50:20,826 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:50:20,827 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:50:20,827 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:50:20,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:50:20,980 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-09-08 07:50:20,980 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:50:20,980 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 07:50:20,992 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:50:21,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:50:21,074 INFO L256 TraceCheckSpWp]: Trace formula consists of 634 conjuncts, 16 conjunts are in the unsatisfiable core [2019-09-08 07:50:21,076 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:50:21,211 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 18 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:50:21,215 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 07:50:21,216 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9] total 21 [2019-09-08 07:50:21,216 INFO L454 AbstractCegarLoop]: Interpolant automaton has 21 states [2019-09-08 07:50:21,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2019-09-08 07:50:21,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=373, Unknown=0, NotChecked=0, Total=420 [2019-09-08 07:50:21,217 INFO L87 Difference]: Start difference. First operand 97592 states and 118958 transitions. Second operand 21 states. [2019-09-08 07:50:36,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:50:36,447 INFO L93 Difference]: Finished difference Result 245399 states and 297684 transitions. [2019-09-08 07:50:36,448 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2019-09-08 07:50:36,448 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 105 [2019-09-08 07:50:36,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:50:37,372 INFO L225 Difference]: With dead ends: 245399 [2019-09-08 07:50:37,373 INFO L226 Difference]: Without dead ends: 148330 [2019-09-08 07:50:37,494 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 129 SyntacticMatches, 1 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2550 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=1668, Invalid=6164, Unknown=0, NotChecked=0, Total=7832 [2019-09-08 07:50:37,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148330 states. [2019-09-08 07:50:51,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148330 to 141591. [2019-09-08 07:50:51,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141591 states. [2019-09-08 07:50:52,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141591 states to 141591 states and 169266 transitions. [2019-09-08 07:50:52,105 INFO L78 Accepts]: Start accepts. Automaton has 141591 states and 169266 transitions. Word has length 105 [2019-09-08 07:50:52,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:50:52,106 INFO L475 AbstractCegarLoop]: Abstraction has 141591 states and 169266 transitions. [2019-09-08 07:50:52,106 INFO L476 AbstractCegarLoop]: Interpolant automaton has 21 states. [2019-09-08 07:50:52,106 INFO L276 IsEmpty]: Start isEmpty. Operand 141591 states and 169266 transitions. [2019-09-08 07:50:52,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2019-09-08 07:50:52,111 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:50:52,111 INFO L399 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:50:52,111 INFO L418 AbstractCegarLoop]: === Iteration 20 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:50:52,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:50:52,112 INFO L82 PathProgramCache]: Analyzing trace with hash 1102318597, now seen corresponding path program 1 times [2019-09-08 07:50:52,112 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:50:52,112 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:50:52,113 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:50:52,113 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:50:52,113 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:50:52,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:50:53,090 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 10 proven. 12 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-09-08 07:50:53,090 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:50:53,090 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 07:50:53,101 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:50:53,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:50:53,186 INFO L256 TraceCheckSpWp]: Trace formula consists of 636 conjuncts, 16 conjunts are in the unsatisfiable core [2019-09-08 07:50:53,189 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:50:53,443 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 23 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 07:50:53,447 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 07:50:53,448 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 9] total 35 [2019-09-08 07:50:53,453 INFO L454 AbstractCegarLoop]: Interpolant automaton has 35 states [2019-09-08 07:50:53,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2019-09-08 07:50:53,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=1107, Unknown=0, NotChecked=0, Total=1190 [2019-09-08 07:50:53,454 INFO L87 Difference]: Start difference. First operand 141591 states and 169266 transitions. Second operand 35 states. [2019-09-08 07:50:53,782 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 47 [2019-09-08 07:50:54,655 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 49 [2019-09-08 07:50:54,912 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 51 [2019-09-08 07:50:55,110 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 42 [2019-09-08 07:50:55,267 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 42 [2019-09-08 07:50:55,486 WARN L188 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 53 [2019-09-08 07:50:55,773 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 54 [2019-09-08 07:50:55,948 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 46 [2019-09-08 07:50:56,136 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 50 [2019-09-08 07:50:56,337 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 39 [2019-09-08 07:50:56,513 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 41 [2019-09-08 07:50:56,734 WARN L188 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 53 [2019-09-08 07:50:56,965 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 53 [2019-09-08 07:50:57,179 WARN L188 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 55 [2019-09-08 07:50:57,431 WARN L188 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 65 [2019-09-08 07:50:57,667 WARN L188 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 67 [2019-09-08 07:50:57,887 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 45 [2019-09-08 07:50:58,081 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 45 [2019-09-08 07:50:58,304 WARN L188 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 58 [2019-09-08 07:50:58,531 WARN L188 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 60 [2019-09-08 07:50:58,806 WARN L188 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 60 [2019-09-08 07:50:59,002 WARN L188 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 53 [2019-09-08 07:50:59,231 WARN L188 SmtUtils]: Spent 175.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 62 [2019-09-08 07:50:59,433 WARN L188 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 55 [2019-09-08 07:50:59,673 WARN L188 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 64 [2019-09-08 07:51:00,147 WARN L188 SmtUtils]: Spent 432.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 57 [2019-09-08 07:51:00,383 WARN L188 SmtUtils]: Spent 178.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 66 [2019-09-08 07:51:00,588 WARN L188 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 59 [2019-09-08 07:51:00,816 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 50 [2019-09-08 07:51:01,063 WARN L188 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 52 [2019-09-08 07:51:01,305 WARN L188 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 53 [2019-09-08 07:51:01,515 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 54 [2019-09-08 07:51:01,668 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 40 [2019-09-08 07:51:01,903 WARN L188 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 65 [2019-09-08 07:51:02,161 WARN L188 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 66 [2019-09-08 07:51:02,940 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 53 [2019-09-08 07:51:03,144 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 54 [2019-09-08 07:51:03,380 WARN L188 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 56 [2019-09-08 07:51:03,589 WARN L188 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 56 [2019-09-08 07:51:03,756 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 44 [2019-09-08 07:51:03,954 WARN L188 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 54 [2019-09-08 07:51:04,142 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 48 [2019-09-08 07:51:04,358 WARN L188 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 57 [2019-09-08 07:51:04,541 WARN L188 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 45 [2019-09-08 07:51:04,752 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 49 [2019-09-08 07:51:05,012 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 37 [2019-09-08 07:51:05,208 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 39 [2019-09-08 07:51:05,426 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 50 [2019-09-08 07:51:05,658 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 52 [2019-09-08 07:51:07,648 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 54 [2019-09-08 07:51:07,947 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 52 [2019-09-08 07:51:08,384 WARN L188 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 53 [2019-09-08 07:51:08,677 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 50 [2019-09-08 07:51:08,873 WARN L188 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 55 [2019-09-08 07:51:09,067 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 50 [2019-09-08 07:51:09,452 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2019-09-08 07:51:09,631 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 53 [2019-09-08 07:51:10,266 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 49 [2019-09-08 07:51:10,447 WARN L188 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 54 [2019-09-08 07:51:10,648 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 54 [2019-09-08 07:51:11,174 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 46 [2019-09-08 07:51:11,341 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 51 [2019-09-08 07:51:11,927 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 52 [2019-09-08 07:51:12,332 WARN L188 SmtUtils]: Spent 291.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 34 [2019-09-08 07:51:12,836 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 52 [2019-09-08 07:51:13,241 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 50 [2019-09-08 07:51:13,505 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2019-09-08 07:51:13,685 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2019-09-08 07:51:15,067 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 56 [2019-09-08 07:51:15,251 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 55 [2019-09-08 07:51:15,751 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 54 [2019-09-08 07:51:15,908 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 48 [2019-09-08 07:51:16,061 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 46 [2019-09-08 07:51:16,237 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 54 [2019-09-08 07:51:16,526 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 53 [2019-09-08 07:51:16,679 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 44 [2019-09-08 07:51:16,854 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 53 [2019-09-08 07:51:16,989 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 44 [2019-09-08 07:51:17,343 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 44 [2019-09-08 07:51:17,500 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2019-09-08 07:51:18,059 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2019-09-08 07:51:19,114 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 51 [2019-09-08 07:51:19,723 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 53 [2019-09-08 07:51:19,900 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 52 [2019-09-08 07:51:20,065 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2019-09-08 07:51:20,323 WARN L188 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2019-09-08 07:51:20,493 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 62 [2019-09-08 07:51:20,660 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2019-09-08 07:51:20,837 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 54 [2019-09-08 07:51:21,071 WARN L188 SmtUtils]: Spent 169.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 65 [2019-09-08 07:51:21,345 WARN L188 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 50 [2019-09-08 07:51:21,568 WARN L188 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 64 [2019-09-08 07:51:21,771 WARN L188 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 63 [2019-09-08 07:51:21,916 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 59 [2019-09-08 07:51:22,133 WARN L188 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2019-09-08 07:51:22,358 WARN L188 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 66 [2019-09-08 07:51:22,510 WARN L188 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2019-09-08 07:51:22,706 WARN L188 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 62 [2019-09-08 07:51:22,987 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 43 [2019-09-08 07:51:23,270 WARN L188 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 45 [2019-09-08 07:51:23,768 WARN L188 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 57 [2019-09-08 07:51:23,986 WARN L188 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 59 [2019-09-08 07:51:24,250 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 53 [2019-09-08 07:51:24,437 WARN L188 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 54 [2019-09-08 07:51:24,641 WARN L188 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 59 [2019-09-08 07:51:24,815 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 52 [2019-09-08 07:51:25,215 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2019-09-08 07:51:25,501 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2019-09-08 07:51:25,718 WARN L188 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 61 [2019-09-08 07:51:25,927 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 59 [2019-09-08 07:51:26,134 WARN L188 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 58 [2019-09-08 07:51:26,413 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 50 [2019-09-08 07:51:26,621 WARN L188 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 63 [2019-09-08 07:51:26,824 WARN L188 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 56 [2019-09-08 07:51:27,101 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 56 [2019-09-08 07:51:27,278 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 57 [2019-09-08 07:51:27,606 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 58 [2019-09-08 07:51:27,848 WARN L188 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 65 [2019-09-08 07:51:28,177 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 56 [2019-09-08 07:51:28,506 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 50 [2019-09-08 07:51:28,885 WARN L188 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 50 [2019-09-08 07:51:29,127 WARN L188 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 50 [2019-09-08 07:51:29,310 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 50 [2019-09-08 07:51:29,519 WARN L188 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 62 [2019-09-08 07:51:29,770 WARN L188 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 64 [2019-09-08 07:51:30,481 WARN L188 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 50 [2019-09-08 07:51:30,684 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 52 [2019-09-08 07:51:30,904 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 54 [2019-09-08 07:51:31,091 WARN L188 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 54 [2019-09-08 07:51:31,284 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 51 [2019-09-08 07:51:31,460 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2019-09-08 07:51:31,616 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 52 [2019-09-08 07:51:32,047 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 55 [2019-09-08 07:51:32,317 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2019-09-08 07:51:32,512 WARN L188 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 52 [2019-09-08 07:51:32,709 WARN L188 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 54 [2019-09-08 07:51:32,881 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 54 [2019-09-08 07:51:33,382 WARN L188 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 51 [2019-09-08 07:51:33,533 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 50 [2019-09-08 07:51:33,985 WARN L188 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2019-09-08 07:51:34,133 WARN L188 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 46 [2019-09-08 07:51:34,309 WARN L188 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 55 [2019-09-08 07:51:34,572 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 52 [2019-09-08 07:51:34,742 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2019-09-08 07:51:34,921 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 52 [2019-09-08 07:51:35,553 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 49 [2019-09-08 07:51:35,879 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 53 [2019-09-08 07:51:36,024 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 43 [2019-09-08 07:51:36,188 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 47 [2019-09-08 07:51:36,603 WARN L188 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 53 [2019-09-08 07:51:37,082 WARN L188 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 50 [2019-09-08 07:51:37,281 WARN L188 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 47 [2019-09-08 07:51:37,919 WARN L188 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 61 [2019-09-08 07:51:38,708 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2019-09-08 07:51:39,402 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2019-09-08 07:51:39,728 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 52 [2019-09-08 07:51:39,913 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 48 [2019-09-08 07:51:40,096 WARN L188 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 50 [2019-09-08 07:51:40,300 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2019-09-08 07:51:40,477 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 53 [2019-09-08 07:51:40,645 WARN L188 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 49 [2019-09-08 07:51:40,821 WARN L188 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 51 [2019-09-08 07:51:41,003 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 50 [2019-09-08 07:51:41,176 WARN L188 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2019-09-08 07:51:41,392 WARN L188 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 52 [2019-09-08 07:51:55,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:51:55,397 INFO L93 Difference]: Finished difference Result 289119 states and 342799 transitions. [2019-09-08 07:51:55,397 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 247 states. [2019-09-08 07:51:55,397 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 105 [2019-09-08 07:51:55,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:51:55,842 INFO L225 Difference]: With dead ends: 289119 [2019-09-08 07:51:55,842 INFO L226 Difference]: Without dead ends: 206004 [2019-09-08 07:51:55,940 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 445 GetRequests, 165 SyntacticMatches, 2 SemanticMatches, 278 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31091 ImplicationChecksByTransitivity, 38.7s TimeCoverageRelationStatistics Valid=7808, Invalid=70312, Unknown=0, NotChecked=0, Total=78120 [2019-09-08 07:51:56,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206004 states. [2019-09-08 07:52:18,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206004 to 189684. [2019-09-08 07:52:18,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189684 states. [2019-09-08 07:52:18,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189684 states to 189684 states and 225995 transitions. [2019-09-08 07:52:18,739 INFO L78 Accepts]: Start accepts. Automaton has 189684 states and 225995 transitions. Word has length 105 [2019-09-08 07:52:18,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:52:18,739 INFO L475 AbstractCegarLoop]: Abstraction has 189684 states and 225995 transitions. [2019-09-08 07:52:18,739 INFO L476 AbstractCegarLoop]: Interpolant automaton has 35 states. [2019-09-08 07:52:18,739 INFO L276 IsEmpty]: Start isEmpty. Operand 189684 states and 225995 transitions. [2019-09-08 07:52:18,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2019-09-08 07:52:18,744 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:52:18,744 INFO L399 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:52:18,744 INFO L418 AbstractCegarLoop]: === Iteration 21 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:52:18,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:52:18,744 INFO L82 PathProgramCache]: Analyzing trace with hash 1862924703, now seen corresponding path program 1 times [2019-09-08 07:52:18,745 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:52:18,745 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:52:18,746 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:52:18,746 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:52:18,746 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:52:18,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:52:19,607 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 10 proven. 12 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-09-08 07:52:19,607 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:52:19,607 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 07:52:19,618 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:52:19,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:52:19,710 INFO L256 TraceCheckSpWp]: Trace formula consists of 640 conjuncts, 54 conjunts are in the unsatisfiable core [2019-09-08 07:52:19,713 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:52:20,703 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 07:52:21,057 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 07:52:21,057 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 07:52:21,058 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 07:52:21,283 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2019-09-08 07:52:21,288 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 07:52:21,645 WARN L188 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 40 [2019-09-08 07:52:22,391 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-08 07:52:22,515 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 16 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (13)] Exception during sending of exit command (exit): Broken pipe [2019-09-08 07:52:22,529 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 07:52:22,529 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 23] total 49 [2019-09-08 07:52:22,530 INFO L454 AbstractCegarLoop]: Interpolant automaton has 49 states [2019-09-08 07:52:22,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2019-09-08 07:52:22,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=2207, Unknown=0, NotChecked=0, Total=2352 [2019-09-08 07:52:22,531 INFO L87 Difference]: Start difference. First operand 189684 states and 225995 transitions. Second operand 49 states. [2019-09-08 07:52:25,007 WARN L188 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 50 [2019-09-08 07:52:25,250 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 42 [2019-09-08 07:52:25,539 WARN L188 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 61 [2019-09-08 07:52:25,922 WARN L188 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 57 [2019-09-08 07:52:26,552 WARN L188 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 162 DAG size of output: 57 [2019-09-08 07:52:26,779 WARN L188 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 49 [2019-09-08 07:52:27,137 WARN L188 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 45 [2019-09-08 07:52:27,355 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 48 [2019-09-08 07:52:27,636 WARN L188 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 61 [2019-09-08 07:52:28,166 WARN L188 SmtUtils]: Spent 337.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 59 [2019-09-08 07:52:28,438 WARN L188 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 63 [2019-09-08 07:52:28,670 WARN L188 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 63 [2019-09-08 07:52:29,299 WARN L188 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 168 DAG size of output: 59 [2019-09-08 07:52:29,574 WARN L188 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 63 [2019-09-08 07:52:29,816 WARN L188 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 63 [2019-09-08 07:52:29,967 WARN L188 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 37 [2019-09-08 07:52:30,774 WARN L188 SmtUtils]: Spent 492.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 57 [2019-09-08 07:52:31,206 WARN L188 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 66 [2019-09-08 07:52:31,380 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 45 [2019-09-08 07:52:32,462 WARN L188 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 66 [2019-09-08 07:52:32,771 WARN L188 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 45 [2019-09-08 07:52:33,128 WARN L188 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 64 [2019-09-08 07:52:33,460 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 42 [2019-09-08 07:52:33,756 WARN L188 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 61 [2019-09-08 07:52:34,480 WARN L188 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 55 [2019-09-08 07:52:35,028 WARN L188 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 64 [2019-09-08 07:52:35,340 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 42 [2019-09-08 07:52:35,554 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 41 [2019-09-08 07:52:35,719 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 39 [2019-09-08 07:52:36,109 WARN L188 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 42 [2019-09-08 07:52:36,546 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 40 [2019-09-08 07:52:36,778 WARN L188 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 43 [2019-09-08 07:52:37,091 WARN L188 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 41 [2019-09-08 07:52:38,998 WARN L188 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 36 [2019-09-08 07:52:42,712 WARN L188 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 43 [2019-09-08 07:52:43,138 WARN L188 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 57 [2019-09-08 07:52:43,595 WARN L188 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 35 [2019-09-08 07:52:43,851 WARN L188 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 55 [2019-09-08 07:52:44,768 WARN L188 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 51 [2019-09-08 07:52:45,336 WARN L188 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 64 [2019-09-08 07:52:45,588 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 47 [2019-09-08 07:52:46,004 WARN L188 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 51 [2019-09-08 07:52:46,299 WARN L188 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 51 [2019-09-08 07:52:46,648 WARN L188 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 64 [2019-09-08 07:52:47,781 WARN L188 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 66 [2019-09-08 07:52:48,019 WARN L188 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 57 [2019-09-08 07:52:48,422 WARN L188 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 66 [2019-09-08 07:52:48,833 WARN L188 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 74 [2019-09-08 07:52:49,098 WARN L188 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 65 [2019-09-08 07:52:49,391 WARN L188 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 61 [2019-09-08 07:52:49,966 WARN L188 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 51 [2019-09-08 07:52:50,363 WARN L188 SmtUtils]: Spent 172.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2019-09-08 07:52:50,533 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 44 [2019-09-08 07:52:52,281 WARN L188 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 65 [2019-09-08 07:52:52,763 WARN L188 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 61 [2019-09-08 07:52:53,208 WARN L188 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2019-09-08 07:52:53,980 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 46 [2019-09-08 07:52:54,296 WARN L188 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 60 [2019-09-08 07:53:10,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:53:10,647 INFO L93 Difference]: Finished difference Result 333368 states and 397016 transitions. [2019-09-08 07:53:10,647 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 155 states. [2019-09-08 07:53:10,648 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 106 [2019-09-08 07:53:10,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:53:11,519 INFO L225 Difference]: With dead ends: 333368 [2019-09-08 07:53:11,519 INFO L226 Difference]: Without dead ends: 184470 [2019-09-08 07:53:11,664 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 340 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13497 ImplicationChecksByTransitivity, 24.8s TimeCoverageRelationStatistics Valid=4257, Invalid=35943, Unknown=0, NotChecked=0, Total=40200 [2019-09-08 07:53:11,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184470 states. [2019-09-08 07:53:29,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184470 to 176361. [2019-09-08 07:53:29,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176361 states. [2019-09-08 07:53:30,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176361 states to 176361 states and 209735 transitions. [2019-09-08 07:53:30,293 INFO L78 Accepts]: Start accepts. Automaton has 176361 states and 209735 transitions. Word has length 106 [2019-09-08 07:53:30,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:53:30,293 INFO L475 AbstractCegarLoop]: Abstraction has 176361 states and 209735 transitions. [2019-09-08 07:53:30,294 INFO L476 AbstractCegarLoop]: Interpolant automaton has 49 states. [2019-09-08 07:53:30,294 INFO L276 IsEmpty]: Start isEmpty. Operand 176361 states and 209735 transitions. [2019-09-08 07:53:30,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2019-09-08 07:53:30,297 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:53:30,297 INFO L399 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:53:30,298 INFO L418 AbstractCegarLoop]: === Iteration 22 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:53:30,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:53:30,298 INFO L82 PathProgramCache]: Analyzing trace with hash -14203873, now seen corresponding path program 1 times [2019-09-08 07:53:30,298 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:53:30,298 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:53:30,299 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:53:30,299 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:53:30,299 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:53:30,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:53:30,449 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 11 proven. 7 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-09-08 07:53:30,449 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:53:30,449 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 07:53:30,461 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:53:30,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:53:30,548 INFO L256 TraceCheckSpWp]: Trace formula consists of 634 conjuncts, 27 conjunts are in the unsatisfiable core [2019-09-08 07:53:30,550 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:53:30,743 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-09-08 07:53:30,747 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-08 07:53:30,747 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [14] total 24 [2019-09-08 07:53:30,747 INFO L454 AbstractCegarLoop]: Interpolant automaton has 24 states [2019-09-08 07:53:30,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2019-09-08 07:53:30,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=494, Unknown=0, NotChecked=0, Total=552 [2019-09-08 07:53:30,748 INFO L87 Difference]: Start difference. First operand 176361 states and 209735 transitions. Second operand 24 states. [2019-09-08 07:53:57,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:53:57,835 INFO L93 Difference]: Finished difference Result 405247 states and 483712 transitions. [2019-09-08 07:53:57,837 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2019-09-08 07:53:57,838 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 106 [2019-09-08 07:53:57,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:53:58,392 INFO L225 Difference]: With dead ends: 405247 [2019-09-08 07:53:58,393 INFO L226 Difference]: Without dead ends: 260254 [2019-09-08 07:53:58,982 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2232 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1567, Invalid=6265, Unknown=0, NotChecked=0, Total=7832 [2019-09-08 07:53:59,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260254 states. [2019-09-08 07:54:24,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260254 to 257728. [2019-09-08 07:54:24,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257728 states. [2019-09-08 07:54:25,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257728 states to 257728 states and 305840 transitions. [2019-09-08 07:54:25,330 INFO L78 Accepts]: Start accepts. Automaton has 257728 states and 305840 transitions. Word has length 106 [2019-09-08 07:54:25,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:54:25,330 INFO L475 AbstractCegarLoop]: Abstraction has 257728 states and 305840 transitions. [2019-09-08 07:54:25,330 INFO L476 AbstractCegarLoop]: Interpolant automaton has 24 states. [2019-09-08 07:54:25,331 INFO L276 IsEmpty]: Start isEmpty. Operand 257728 states and 305840 transitions. [2019-09-08 07:54:25,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2019-09-08 07:54:25,333 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:54:25,333 INFO L399 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:54:25,333 INFO L418 AbstractCegarLoop]: === Iteration 23 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:54:25,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:54:25,333 INFO L82 PathProgramCache]: Analyzing trace with hash 346145633, now seen corresponding path program 1 times [2019-09-08 07:54:25,333 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:54:25,333 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:54:25,334 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:54:25,334 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:54:25,335 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:54:25,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:54:25,590 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 10 proven. 8 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-09-08 07:54:25,591 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:54:25,591 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-08 07:54:25,613 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 07:54:25,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:54:25,696 INFO L256 TraceCheckSpWp]: Trace formula consists of 634 conjuncts, 27 conjunts are in the unsatisfiable core [2019-09-08 07:54:25,698 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:54:25,910 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-09-08 07:54:25,914 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-08 07:54:25,914 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [17] total 27 [2019-09-08 07:54:25,914 INFO L454 AbstractCegarLoop]: Interpolant automaton has 27 states [2019-09-08 07:54:25,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2019-09-08 07:54:25,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=640, Unknown=0, NotChecked=0, Total=702 [2019-09-08 07:54:25,915 INFO L87 Difference]: Start difference. First operand 257728 states and 305840 transitions. Second operand 27 states. [2019-09-08 07:54:30,814 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 44 [2019-09-08 07:54:32,545 WARN L188 SmtUtils]: Spent 777.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 40 [2019-09-08 07:55:10,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:55:10,421 INFO L93 Difference]: Finished difference Result 440577 states and 523870 transitions. [2019-09-08 07:55:10,422 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2019-09-08 07:55:10,422 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 106 [2019-09-08 07:55:10,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:55:11,095 INFO L225 Difference]: With dead ends: 440577 [2019-09-08 07:55:11,095 INFO L226 Difference]: Without dead ends: 338681 [2019-09-08 07:55:11,245 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6273 ImplicationChecksByTransitivity, 9.1s TimeCoverageRelationStatistics Valid=3275, Invalid=14281, Unknown=0, NotChecked=0, Total=17556 [2019-09-08 07:55:11,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338681 states. [2019-09-08 07:55:45,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338681 to 325805. [2019-09-08 07:55:45,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 325805 states. [2019-09-08 07:55:46,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325805 states to 325805 states and 386971 transitions. [2019-09-08 07:55:46,384 INFO L78 Accepts]: Start accepts. Automaton has 325805 states and 386971 transitions. Word has length 106 [2019-09-08 07:55:46,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:55:46,384 INFO L475 AbstractCegarLoop]: Abstraction has 325805 states and 386971 transitions. [2019-09-08 07:55:46,385 INFO L476 AbstractCegarLoop]: Interpolant automaton has 27 states. [2019-09-08 07:55:46,385 INFO L276 IsEmpty]: Start isEmpty. Operand 325805 states and 386971 transitions. [2019-09-08 07:55:46,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2019-09-08 07:55:46,416 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:55:46,416 INFO L399 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:55:46,416 INFO L418 AbstractCegarLoop]: === Iteration 24 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:55:46,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:55:46,416 INFO L82 PathProgramCache]: Analyzing trace with hash -192315662, now seen corresponding path program 1 times [2019-09-08 07:55:46,417 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:55:46,417 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:55:46,417 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:55:46,418 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:55:46,418 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:55:46,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:55:46,528 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 55 proven. 19 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2019-09-08 07:55:46,528 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:55:46,529 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 07:55:46,543 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:55:46,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:55:46,657 INFO L256 TraceCheckSpWp]: Trace formula consists of 941 conjuncts, 16 conjunts are in the unsatisfiable core [2019-09-08 07:55:46,661 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:55:46,717 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 159 proven. 5 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2019-09-08 07:55:46,721 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 07:55:46,721 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2019-09-08 07:55:46,721 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-08 07:55:46,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-08 07:55:46,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-09-08 07:55:46,722 INFO L87 Difference]: Start difference. First operand 325805 states and 386971 transitions. Second operand 8 states. [2019-09-08 07:56:22,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:56:22,603 INFO L93 Difference]: Finished difference Result 654606 states and 781958 transitions. [2019-09-08 07:56:22,603 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-08 07:56:22,603 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 184 [2019-09-08 07:56:22,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:56:23,471 INFO L225 Difference]: With dead ends: 654606 [2019-09-08 07:56:23,471 INFO L226 Difference]: Without dead ends: 371237 [2019-09-08 07:56:23,766 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 198 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2019-09-08 07:56:24,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371237 states. [2019-09-08 07:57:03,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371237 to 365808. [2019-09-08 07:57:03,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 365808 states. [2019-09-08 07:57:03,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 365808 states to 365808 states and 435820 transitions. [2019-09-08 07:57:03,959 INFO L78 Accepts]: Start accepts. Automaton has 365808 states and 435820 transitions. Word has length 184 [2019-09-08 07:57:03,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:57:03,959 INFO L475 AbstractCegarLoop]: Abstraction has 365808 states and 435820 transitions. [2019-09-08 07:57:03,960 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-08 07:57:03,960 INFO L276 IsEmpty]: Start isEmpty. Operand 365808 states and 435820 transitions. [2019-09-08 07:57:03,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2019-09-08 07:57:03,992 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:57:03,993 INFO L399 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 07:57:03,993 INFO L418 AbstractCegarLoop]: === Iteration 25 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:57:03,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:57:03,993 INFO L82 PathProgramCache]: Analyzing trace with hash 378578802, now seen corresponding path program 1 times [2019-09-08 07:57:03,993 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:57:03,993 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:57:03,994 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:57:03,995 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:57:03,995 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:57:04,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:57:04,104 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 59 proven. 19 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2019-09-08 07:57:04,104 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:57:04,104 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-08 07:57:04,126 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 07:57:04,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:57:04,238 INFO L256 TraceCheckSpWp]: Trace formula consists of 941 conjuncts, 16 conjunts are in the unsatisfiable core [2019-09-08 07:57:04,242 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:57:04,297 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 179 proven. 5 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-09-08 07:57:04,301 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-08 07:57:04,301 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2019-09-08 07:57:04,302 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-08 07:57:04,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-08 07:57:04,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-09-08 07:57:04,302 INFO L87 Difference]: Start difference. First operand 365808 states and 435820 transitions. Second operand 8 states. [2019-09-08 07:57:32,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 07:57:32,302 INFO L93 Difference]: Finished difference Result 568593 states and 680232 transitions. [2019-09-08 07:57:32,303 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-08 07:57:32,303 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 184 [2019-09-08 07:57:32,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 07:57:32,902 INFO L225 Difference]: With dead ends: 568593 [2019-09-08 07:57:32,903 INFO L226 Difference]: Without dead ends: 260771 [2019-09-08 07:57:33,202 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2019-09-08 07:57:33,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260771 states. [2019-09-08 07:58:02,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260771 to 256289. [2019-09-08 07:58:02,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256289 states. [2019-09-08 07:58:03,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256289 states to 256289 states and 304698 transitions. [2019-09-08 07:58:03,303 INFO L78 Accepts]: Start accepts. Automaton has 256289 states and 304698 transitions. Word has length 184 [2019-09-08 07:58:03,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 07:58:03,303 INFO L475 AbstractCegarLoop]: Abstraction has 256289 states and 304698 transitions. [2019-09-08 07:58:03,303 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-08 07:58:03,303 INFO L276 IsEmpty]: Start isEmpty. Operand 256289 states and 304698 transitions. [2019-09-08 07:58:03,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2019-09-08 07:58:03,330 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 07:58:03,331 INFO L399 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, 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] [2019-09-08 07:58:03,331 INFO L418 AbstractCegarLoop]: === Iteration 26 === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 07:58:03,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 07:58:03,331 INFO L82 PathProgramCache]: Analyzing trace with hash -34853141, now seen corresponding path program 1 times [2019-09-08 07:58:03,331 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 07:58:03,332 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 07:58:03,332 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:58:03,333 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:58:03,333 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 07:58:03,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:58:03,517 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 51 proven. 37 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2019-09-08 07:58:03,518 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-08 07:58:03,518 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-08 07:58:03,530 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 07:58:03,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 07:58:03,652 INFO L256 TraceCheckSpWp]: Trace formula consists of 939 conjuncts, 27 conjunts are in the unsatisfiable core [2019-09-08 07:58:03,657 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-08 07:58:03,853 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2019-09-08 07:58:03,866 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-08 07:58:03,866 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [15] total 23 [2019-09-08 07:58:03,867 INFO L454 AbstractCegarLoop]: Interpolant automaton has 23 states [2019-09-08 07:58:03,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2019-09-08 07:58:03,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=451, Unknown=0, NotChecked=0, Total=506 [2019-09-08 07:58:03,867 INFO L87 Difference]: Start difference. First operand 256289 states and 304698 transitions. Second operand 23 states.