java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label59.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-07 22:16:55,853 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-07 22:16:55,855 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-07 22:16:55,866 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-07 22:16:55,876 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-07 22:16:55,877 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-07 22:16:55,878 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-07 22:16:55,879 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-07 22:16:55,880 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-07 22:16:55,881 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-07 22:16:55,883 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-07 22:16:55,885 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-07 22:16:55,887 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-07 22:16:55,888 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-07 22:16:55,889 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-07 22:16:55,889 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-07 22:16:55,892 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-07 22:16:55,899 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-07 22:16:55,900 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-07 22:16:55,901 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-07 22:16:55,901 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 [2019-09-07 22:16:55,916 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-07 22:16:55,916 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-07 22:16:55,917 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-07 22:16:55,917 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-07 22:16:55,917 INFO L138 SettingsManager]: * Use SBE=true [2019-09-07 22:16:55,918 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-07 22:16:55,918 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-07 22:16:55,918 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-07 22:16:55,918 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-07 22:16:55,918 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-07 22:16:55,919 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-07 22:16:55,919 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-07 22:16:55,919 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-07 22:16:55,919 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-07 22:16:55,919 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-07 22:16:55,920 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-07 22:16:55,920 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-07 22:16:55,920 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-07 22:16:55,920 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-07 22:16:55,920 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-07 22:16:55,921 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-07 22:16:55,921 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-07 22:16:55,921 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-07 22:16:55,921 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-07 22:16:55,921 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-07 22:16:55,922 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-07 22:16:55,922 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-07 22:16:55,922 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-07 22:16:55,922 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-07 22:16:55,961 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-07 22:16:55,973 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-07 22:16:55,976 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-07 22:16:55,977 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-07 22:16:55,978 INFO L275 PluginConnector]: CDTParser initialized [2019-09-07 22:16:55,978 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label59.c [2019-09-07 22:16:56,039 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0573e0fab/e4868408708a4b6daebb53408f1164ee/FLAGda599d2bc [2019-09-07 22:16:56,778 INFO L306 CDTParser]: Found 1 translation units. [2019-09-07 22:16:56,781 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label59.c [2019-09-07 22:16:56,801 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0573e0fab/e4868408708a4b6daebb53408f1164ee/FLAGda599d2bc [2019-09-07 22:16:56,925 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0573e0fab/e4868408708a4b6daebb53408f1164ee [2019-09-07 22:16:56,935 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-07 22:16:56,937 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-07 22:16:56,939 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-07 22:16:56,939 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-07 22:16:56,943 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-07 22:16:56,944 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 10:16:56" (1/1) ... [2019-09-07 22:16:56,947 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b575677 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 10:16:56, skipping insertion in model container [2019-09-07 22:16:56,947 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 10:16:56" (1/1) ... [2019-09-07 22:16:56,955 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-07 22:16:57,064 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-07 22:16:58,175 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 22:16:58,190 INFO L188 MainTranslator]: Completed pre-run [2019-09-07 22:16:58,640 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 22:16:58,670 INFO L192 MainTranslator]: Completed translation [2019-09-07 22:16:58,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 10:16:58 WrapperNode [2019-09-07 22:16:58,671 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-07 22:16:58,672 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-07 22:16:58,672 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-07 22:16:58,673 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-07 22:16:58,688 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 10:16:58" (1/1) ... [2019-09-07 22:16:58,689 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 10:16:58" (1/1) ... [2019-09-07 22:16:58,743 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 10:16:58" (1/1) ... [2019-09-07 22:16:58,745 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 10:16:58" (1/1) ... [2019-09-07 22:16:58,875 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 10:16:58" (1/1) ... [2019-09-07 22:16:58,907 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 10:16:58" (1/1) ... [2019-09-07 22:16:58,938 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 10:16:58" (1/1) ... [2019-09-07 22:16:58,966 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-07 22:16:58,966 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-07 22:16:58,966 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-07 22:16:58,966 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-07 22:16:58,968 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 10:16:58" (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 [2019-09-07 22:16:59,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-07 22:16:59,029 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-07 22:16:59,029 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-07 22:16:59,029 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-09-07 22:16:59,029 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-07 22:16:59,029 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-07 22:16:59,030 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-09-07 22:16:59,030 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-07 22:16:59,030 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-07 22:16:59,030 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-07 22:16:59,030 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-07 22:16:59,030 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-07 22:16:59,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-07 22:17:03,204 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-07 22:17:03,205 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-07 22:17:03,207 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 10:17:03 BoogieIcfgContainer [2019-09-07 22:17:03,208 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-07 22:17:03,209 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-07 22:17:03,209 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-07 22:17:03,214 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-07 22:17:03,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.09 10:16:56" (1/3) ... [2019-09-07 22:17:03,215 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ce2eef4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 10:17:03, skipping insertion in model container [2019-09-07 22:17:03,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 10:16:58" (2/3) ... [2019-09-07 22:17:03,216 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ce2eef4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 10:17:03, skipping insertion in model container [2019-09-07 22:17:03,216 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 10:17:03" (3/3) ... [2019-09-07 22:17:03,223 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem17_label59.c [2019-09-07 22:17:03,236 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-07 22:17:03,246 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-07 22:17:03,263 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-07 22:17:03,312 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-07 22:17:03,313 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-07 22:17:03,313 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-07 22:17:03,313 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-07 22:17:03,313 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-07 22:17:03,314 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-07 22:17:03,314 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-07 22:17:03,314 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-07 22:17:03,314 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-07 22:17:03,344 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states. [2019-09-07 22:17:03,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-09-07 22:17:03,352 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:17:03,353 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] [2019-09-07 22:17:03,355 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:17:03,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:17:03,361 INFO L82 PathProgramCache]: Analyzing trace with hash -1981769895, now seen corresponding path program 1 times [2019-09-07 22:17:03,363 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:17:03,364 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:17:03,416 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:17:03,416 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:17:03,416 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:17:03,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:17:03,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 22:17:03,721 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 22:17:03,721 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-07 22:17:03,726 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-07 22:17:03,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-07 22:17:03,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 22:17:03,745 INFO L87 Difference]: Start difference. First operand 603 states. Second operand 4 states. [2019-09-07 22:17:10,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:17:10,351 INFO L93 Difference]: Finished difference Result 2160 states and 4005 transitions. [2019-09-07 22:17:10,352 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-07 22:17:10,353 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2019-09-07 22:17:10,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:17:10,383 INFO L225 Difference]: With dead ends: 2160 [2019-09-07 22:17:10,383 INFO L226 Difference]: Without dead ends: 1476 [2019-09-07 22:17:10,401 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 22:17:10,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1476 states. [2019-09-07 22:17:10,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1476 to 990. [2019-09-07 22:17:10,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 990 states. [2019-09-07 22:17:10,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 990 states to 990 states and 1715 transitions. [2019-09-07 22:17:10,529 INFO L78 Accepts]: Start accepts. Automaton has 990 states and 1715 transitions. Word has length 38 [2019-09-07 22:17:10,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:17:10,530 INFO L475 AbstractCegarLoop]: Abstraction has 990 states and 1715 transitions. [2019-09-07 22:17:10,530 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-07 22:17:10,530 INFO L276 IsEmpty]: Start isEmpty. Operand 990 states and 1715 transitions. [2019-09-07 22:17:10,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2019-09-07 22:17:10,535 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:17:10,536 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, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 22:17:10,536 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:17:10,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:17:10,536 INFO L82 PathProgramCache]: Analyzing trace with hash 1220667172, now seen corresponding path program 1 times [2019-09-07 22:17:10,537 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:17:10,537 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:17:10,538 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:17:10,538 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:17:10,538 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:17:10,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:17:10,784 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 22:17:10,785 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 22:17:10,785 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-07 22:17:10,795 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-07 22:17:10,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-07 22:17:10,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-07 22:17:10,798 INFO L87 Difference]: Start difference. First operand 990 states and 1715 transitions. Second operand 5 states. [2019-09-07 22:17:17,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:17:17,446 INFO L93 Difference]: Finished difference Result 2903 states and 5092 transitions. [2019-09-07 22:17:17,447 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-07 22:17:17,447 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 109 [2019-09-07 22:17:17,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:17:17,462 INFO L225 Difference]: With dead ends: 2903 [2019-09-07 22:17:17,462 INFO L226 Difference]: Without dead ends: 1919 [2019-09-07 22:17:17,466 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 [2019-09-07 22:17:17,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1919 states. [2019-09-07 22:17:17,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1919 to 1895. [2019-09-07 22:17:17,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1895 states. [2019-09-07 22:17:17,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1895 states to 1895 states and 2965 transitions. [2019-09-07 22:17:17,541 INFO L78 Accepts]: Start accepts. Automaton has 1895 states and 2965 transitions. Word has length 109 [2019-09-07 22:17:17,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:17:17,544 INFO L475 AbstractCegarLoop]: Abstraction has 1895 states and 2965 transitions. [2019-09-07 22:17:17,544 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-07 22:17:17,544 INFO L276 IsEmpty]: Start isEmpty. Operand 1895 states and 2965 transitions. [2019-09-07 22:17:17,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2019-09-07 22:17:17,557 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:17:17,558 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, 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] [2019-09-07 22:17:17,558 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:17:17,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:17:17,560 INFO L82 PathProgramCache]: Analyzing trace with hash 2122787760, now seen corresponding path program 1 times [2019-09-07 22:17:17,560 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:17:17,561 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:17:17,562 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:17:17,563 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:17:17,563 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:17:17,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:17:17,758 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 22:17:17,759 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 22:17:17,759 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-07 22:17:17,761 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-07 22:17:17,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-07 22:17:17,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 22:17:17,762 INFO L87 Difference]: Start difference. First operand 1895 states and 2965 transitions. Second operand 4 states. [2019-09-07 22:17:23,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:17:23,544 INFO L93 Difference]: Finished difference Result 7329 states and 11888 transitions. [2019-09-07 22:17:23,551 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-07 22:17:23,552 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 112 [2019-09-07 22:17:23,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:17:23,588 INFO L225 Difference]: With dead ends: 7329 [2019-09-07 22:17:23,588 INFO L226 Difference]: Without dead ends: 5440 [2019-09-07 22:17:23,595 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 22:17:23,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5440 states. [2019-09-07 22:17:23,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5440 to 5434. [2019-09-07 22:17:23,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5434 states. [2019-09-07 22:17:23,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5434 states to 5434 states and 7929 transitions. [2019-09-07 22:17:23,770 INFO L78 Accepts]: Start accepts. Automaton has 5434 states and 7929 transitions. Word has length 112 [2019-09-07 22:17:23,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:17:23,780 INFO L475 AbstractCegarLoop]: Abstraction has 5434 states and 7929 transitions. [2019-09-07 22:17:23,781 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-07 22:17:23,781 INFO L276 IsEmpty]: Start isEmpty. Operand 5434 states and 7929 transitions. [2019-09-07 22:17:23,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2019-09-07 22:17:23,788 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:17:23,788 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 22:17:23,789 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:17:23,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:17:23,789 INFO L82 PathProgramCache]: Analyzing trace with hash 759794351, now seen corresponding path program 1 times [2019-09-07 22:17:23,789 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:17:23,789 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:17:23,790 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:17:23,790 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:17:23,791 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:17:23,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:17:24,082 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 62 proven. 67 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-07 22:17:24,082 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 22:17:24,083 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 22:17:24,102 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:17:24,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:17:24,183 INFO L256 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-07 22:17:24,200 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 22:17:24,349 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (2)] Exception during sending of exit command (exit): Stream closed [2019-09-07 22:17:24,363 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 22:17:24,363 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2019-09-07 22:17:24,366 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 22:17:24,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 22:17:24,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-09-07 22:17:24,367 INFO L87 Difference]: Start difference. First operand 5434 states and 7929 transitions. Second operand 9 states. [2019-09-07 22:17:38,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:17:38,132 INFO L93 Difference]: Finished difference Result 25533 states and 41668 transitions. [2019-09-07 22:17:38,132 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2019-09-07 22:17:38,133 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 209 [2019-09-07 22:17:38,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:17:38,242 INFO L225 Difference]: With dead ends: 25533 [2019-09-07 22:17:38,243 INFO L226 Difference]: Without dead ends: 15087 [2019-09-07 22:17:38,292 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 784 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=504, Invalid=1946, Unknown=0, NotChecked=0, Total=2450 [2019-09-07 22:17:38,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15087 states. [2019-09-07 22:17:38,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15087 to 13608. [2019-09-07 22:17:38,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13608 states. [2019-09-07 22:17:38,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13608 states to 13608 states and 17397 transitions. [2019-09-07 22:17:38,780 INFO L78 Accepts]: Start accepts. Automaton has 13608 states and 17397 transitions. Word has length 209 [2019-09-07 22:17:38,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:17:38,782 INFO L475 AbstractCegarLoop]: Abstraction has 13608 states and 17397 transitions. [2019-09-07 22:17:38,782 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 22:17:38,782 INFO L276 IsEmpty]: Start isEmpty. Operand 13608 states and 17397 transitions. [2019-09-07 22:17:38,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2019-09-07 22:17:38,791 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:17:38,792 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, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2019-09-07 22:17:38,792 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:17:38,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:17:38,793 INFO L82 PathProgramCache]: Analyzing trace with hash -1770248796, now seen corresponding path program 1 times [2019-09-07 22:17:38,793 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:17:38,793 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:17:38,797 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:17:38,797 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:17:38,797 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:17:38,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:17:39,068 INFO L134 CoverageAnalysis]: Checked inductivity of 322 backedges. 182 proven. 71 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2019-09-07 22:17:39,069 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 22:17:39,070 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 [2019-09-07 22:17:39,156 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:17:39,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:17:39,256 INFO L256 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 22:17:39,272 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 22:17:39,373 INFO L134 CoverageAnalysis]: Checked inductivity of 322 backedges. 288 proven. 2 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2019-09-07 22:17:39,384 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 22:17:39,384 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 22:17:39,385 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 22:17:39,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 22:17:39,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 22:17:39,386 INFO L87 Difference]: Start difference. First operand 13608 states and 17397 transitions. Second operand 9 states. [2019-09-07 22:17:43,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:17:43,916 INFO L93 Difference]: Finished difference Result 26809 states and 34431 transitions. [2019-09-07 22:17:43,916 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-09-07 22:17:43,917 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 296 [2019-09-07 22:17:43,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:17:43,966 INFO L225 Difference]: With dead ends: 26809 [2019-09-07 22:17:43,966 INFO L226 Difference]: Without dead ends: 13206 [2019-09-07 22:17:44,007 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 301 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2019-09-07 22:17:44,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13206 states. [2019-09-07 22:17:44,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13206 to 11447. [2019-09-07 22:17:44,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11447 states. [2019-09-07 22:17:44,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11447 states to 11447 states and 13724 transitions. [2019-09-07 22:17:44,295 INFO L78 Accepts]: Start accepts. Automaton has 11447 states and 13724 transitions. Word has length 296 [2019-09-07 22:17:44,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:17:44,296 INFO L475 AbstractCegarLoop]: Abstraction has 11447 states and 13724 transitions. [2019-09-07 22:17:44,296 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 22:17:44,297 INFO L276 IsEmpty]: Start isEmpty. Operand 11447 states and 13724 transitions. [2019-09-07 22:17:44,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2019-09-07 22:17:44,306 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:17:44,306 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, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2019-09-07 22:17:44,307 INFO L418 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:17:44,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:17:44,307 INFO L82 PathProgramCache]: Analyzing trace with hash 701471735, now seen corresponding path program 1 times [2019-09-07 22:17:44,307 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:17:44,307 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:17:44,308 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:17:44,308 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:17:44,309 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:17:44,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:17:44,558 INFO L134 CoverageAnalysis]: Checked inductivity of 322 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 223 trivial. 0 not checked. [2019-09-07 22:17:44,558 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 22:17:44,559 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-07 22:17:44,559 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-07 22:17:44,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-07 22:17:44,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 22:17:44,560 INFO L87 Difference]: Start difference. First operand 11447 states and 13724 transitions. Second operand 4 states. [2019-09-07 22:17:48,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:17:48,879 INFO L93 Difference]: Finished difference Result 33366 states and 40977 transitions. [2019-09-07 22:17:48,879 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-07 22:17:48,880 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 305 [2019-09-07 22:17:48,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:17:48,954 INFO L225 Difference]: With dead ends: 33366 [2019-09-07 22:17:48,954 INFO L226 Difference]: Without dead ends: 20137 [2019-09-07 22:17:48,983 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 22:17:49,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20137 states. [2019-09-07 22:17:49,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20137 to 19700. [2019-09-07 22:17:49,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19700 states. [2019-09-07 22:17:49,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19700 states to 19700 states and 23254 transitions. [2019-09-07 22:17:49,390 INFO L78 Accepts]: Start accepts. Automaton has 19700 states and 23254 transitions. Word has length 305 [2019-09-07 22:17:49,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:17:49,393 INFO L475 AbstractCegarLoop]: Abstraction has 19700 states and 23254 transitions. [2019-09-07 22:17:49,393 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-07 22:17:49,394 INFO L276 IsEmpty]: Start isEmpty. Operand 19700 states and 23254 transitions. [2019-09-07 22:17:49,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2019-09-07 22:17:49,410 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:17:49,411 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, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 22:17:49,411 INFO L418 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:17:49,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:17:49,412 INFO L82 PathProgramCache]: Analyzing trace with hash -1578248607, now seen corresponding path program 1 times [2019-09-07 22:17:49,412 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:17:49,412 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:17:49,413 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:17:49,413 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:17:49,413 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:17:49,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:17:49,969 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 3 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 22:17:49,969 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 22:17:49,969 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 [2019-09-07 22:17:49,983 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:17:50,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:17:50,084 INFO L256 TraceCheckSpWp]: Trace formula consists of 557 conjuncts, 11 conjunts are in the unsatisfiable core [2019-09-07 22:17:50,095 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 22:17:50,287 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 3 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 22:17:50,292 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 22:17:50,294 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2019-09-07 22:17:50,295 INFO L454 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-09-07 22:17:50,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-09-07 22:17:50,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2019-09-07 22:17:50,296 INFO L87 Difference]: Start difference. First operand 19700 states and 23254 transitions. Second operand 11 states. [2019-09-07 22:18:06,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:18:06,471 INFO L93 Difference]: Finished difference Result 48892 states and 58565 transitions. [2019-09-07 22:18:06,471 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2019-09-07 22:18:06,472 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 385 [2019-09-07 22:18:06,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:18:06,584 INFO L225 Difference]: With dead ends: 48892 [2019-09-07 22:18:06,584 INFO L226 Difference]: Without dead ends: 28318 [2019-09-07 22:18:06,618 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 387 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 343 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=292, Invalid=1040, Unknown=0, NotChecked=0, Total=1332 [2019-09-07 22:18:06,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28318 states. [2019-09-07 22:18:07,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28318 to 28155. [2019-09-07 22:18:07,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28155 states. [2019-09-07 22:18:07,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28155 states to 28155 states and 33301 transitions. [2019-09-07 22:18:07,283 INFO L78 Accepts]: Start accepts. Automaton has 28155 states and 33301 transitions. Word has length 385 [2019-09-07 22:18:07,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:18:07,284 INFO L475 AbstractCegarLoop]: Abstraction has 28155 states and 33301 transitions. [2019-09-07 22:18:07,285 INFO L476 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-09-07 22:18:07,285 INFO L276 IsEmpty]: Start isEmpty. Operand 28155 states and 33301 transitions. [2019-09-07 22:18:07,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 493 [2019-09-07 22:18:07,330 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:18:07,330 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, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 22:18:07,331 INFO L418 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:18:07,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:18:07,332 INFO L82 PathProgramCache]: Analyzing trace with hash -82016085, now seen corresponding path program 1 times [2019-09-07 22:18:07,332 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:18:07,332 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:18:07,333 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:18:07,334 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:18:07,334 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:18:07,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:18:07,755 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 100 proven. 2 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2019-09-07 22:18:07,756 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 22:18:07,756 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) [2019-09-07 22:18:07,772 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 [2019-09-07 22:18:07,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:18:07,912 INFO L256 TraceCheckSpWp]: Trace formula consists of 725 conjuncts, 2 conjunts are in the unsatisfiable core [2019-09-07 22:18:07,920 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 22:18:08,858 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 312 proven. 0 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2019-09-07 22:18:08,864 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 22:18:08,866 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2019-09-07 22:18:08,867 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-07 22:18:08,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-07 22:18:08,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 22:18:08,867 INFO L87 Difference]: Start difference. First operand 28155 states and 33301 transitions. Second operand 4 states. [2019-09-07 22:18:14,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:18:14,414 INFO L93 Difference]: Finished difference Result 75940 states and 91776 transitions. [2019-09-07 22:18:14,415 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-07 22:18:14,415 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 492 [2019-09-07 22:18:14,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:18:14,537 INFO L225 Difference]: With dead ends: 75940 [2019-09-07 22:18:14,537 INFO L226 Difference]: Without dead ends: 48224 [2019-09-07 22:18:14,580 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 494 GetRequests, 492 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 22:18:14,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48224 states. [2019-09-07 22:18:15,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48224 to 45597. [2019-09-07 22:18:15,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45597 states. [2019-09-07 22:18:15,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45597 states to 45597 states and 54792 transitions. [2019-09-07 22:18:15,411 INFO L78 Accepts]: Start accepts. Automaton has 45597 states and 54792 transitions. Word has length 492 [2019-09-07 22:18:15,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:18:15,412 INFO L475 AbstractCegarLoop]: Abstraction has 45597 states and 54792 transitions. [2019-09-07 22:18:15,412 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-07 22:18:15,412 INFO L276 IsEmpty]: Start isEmpty. Operand 45597 states and 54792 transitions. [2019-09-07 22:18:15,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 652 [2019-09-07 22:18:15,492 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:18:15,493 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, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 22:18:15,493 INFO L418 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:18:15,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:18:15,494 INFO L82 PathProgramCache]: Analyzing trace with hash -2137805635, now seen corresponding path program 1 times [2019-09-07 22:18:15,494 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:18:15,494 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:18:15,495 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:18:15,495 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:18:15,495 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:18:15,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:18:16,339 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 383 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2019-09-07 22:18:16,340 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 22:18:16,340 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-07 22:18:16,365 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 22:18:16,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:18:16,531 INFO L256 TraceCheckSpWp]: Trace formula consists of 906 conjuncts, 15 conjunts are in the unsatisfiable core [2019-09-07 22:18:16,541 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 22:18:16,560 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:18:16,561 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:18:16,918 WARN L188 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 17 [2019-09-07 22:18:17,534 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 105 proven. 6 refuted. 0 times theorem prover too weak. 358 trivial. 0 not checked. [2019-09-07 22:18:17,538 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 22:18:17,538 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9] total 12 [2019-09-07 22:18:17,543 INFO L454 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-09-07 22:18:17,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-09-07 22:18:17,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2019-09-07 22:18:17,544 INFO L87 Difference]: Start difference. First operand 45597 states and 54792 transitions. Second operand 12 states. [2019-09-07 22:20:14,959 WARN L188 SmtUtils]: Spent 2.07 s on a formula simplification that was a NOOP. DAG size: 25 [2019-09-07 22:22:36,542 WARN L188 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 31 [2019-09-07 22:23:46,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:23:46,356 INFO L93 Difference]: Finished difference Result 117929 states and 144452 transitions. [2019-09-07 22:23:46,356 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2019-09-07 22:23:46,356 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 651 [2019-09-07 22:23:46,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:23:46,588 INFO L225 Difference]: With dead ends: 117929 [2019-09-07 22:23:46,588 INFO L226 Difference]: Without dead ends: 72771 [2019-09-07 22:23:46,680 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 738 GetRequests, 684 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 946 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=492, Invalid=2588, Unknown=0, NotChecked=0, Total=3080 [2019-09-07 22:23:46,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72771 states. [2019-09-07 22:23:49,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72771 to 65022. [2019-09-07 22:23:49,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65022 states. [2019-09-07 22:23:49,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65022 states to 65022 states and 76527 transitions. [2019-09-07 22:23:49,293 INFO L78 Accepts]: Start accepts. Automaton has 65022 states and 76527 transitions. Word has length 651 [2019-09-07 22:23:49,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:23:49,293 INFO L475 AbstractCegarLoop]: Abstraction has 65022 states and 76527 transitions. [2019-09-07 22:23:49,293 INFO L476 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-09-07 22:23:49,294 INFO L276 IsEmpty]: Start isEmpty. Operand 65022 states and 76527 transitions. [2019-09-07 22:23:49,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 833 [2019-09-07 22:23:49,402 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:23:49,403 INFO L399 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 22:23:49,403 INFO L418 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:23:49,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:23:49,404 INFO L82 PathProgramCache]: Analyzing trace with hash 723429978, now seen corresponding path program 1 times [2019-09-07 22:23:49,404 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:23:49,404 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:23:49,405 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:23:49,405 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:23:49,405 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:23:49,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:23:50,535 INFO L134 CoverageAnalysis]: Checked inductivity of 1168 backedges. 173 proven. 698 refuted. 0 times theorem prover too weak. 297 trivial. 0 not checked. [2019-09-07 22:23:50,535 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 22:23:50,536 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 [2019-09-07 22:23:50,547 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:23:50,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:23:50,768 INFO L256 TraceCheckSpWp]: Trace formula consists of 1167 conjuncts, 13 conjunts are in the unsatisfiable core [2019-09-07 22:23:50,778 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 22:23:50,812 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:23:50,813 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:23:50,977 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-07 22:23:51,732 INFO L134 CoverageAnalysis]: Checked inductivity of 1168 backedges. 702 proven. 2 refuted. 0 times theorem prover too weak. 464 trivial. 0 not checked. [2019-09-07 22:23:51,736 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 22:23:51,737 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 16 [2019-09-07 22:23:51,739 INFO L454 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-09-07 22:23:51,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-09-07 22:23:51,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2019-09-07 22:23:51,740 INFO L87 Difference]: Start difference. First operand 65022 states and 76527 transitions. Second operand 16 states. [2019-09-07 22:23:51,953 WARN L188 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 8 DAG size of output: 7 [2019-09-07 22:25:02,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:25:02,242 INFO L93 Difference]: Finished difference Result 203981 states and 263358 transitions. [2019-09-07 22:25:02,242 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 87 states. [2019-09-07 22:25:02,242 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 832 [2019-09-07 22:25:02,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:25:02,702 INFO L225 Difference]: With dead ends: 203981 [2019-09-07 22:25:02,703 INFO L226 Difference]: Without dead ends: 142971 [2019-09-07 22:25:02,807 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 988 GetRequests, 895 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3134 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=1203, Invalid=7727, Unknown=0, NotChecked=0, Total=8930 [2019-09-07 22:25:02,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142971 states. [2019-09-07 22:25:07,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142971 to 135161. [2019-09-07 22:25:07,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135161 states. [2019-09-07 22:25:08,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135161 states to 135161 states and 159818 transitions. [2019-09-07 22:25:08,118 INFO L78 Accepts]: Start accepts. Automaton has 135161 states and 159818 transitions. Word has length 832 [2019-09-07 22:25:08,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:25:08,119 INFO L475 AbstractCegarLoop]: Abstraction has 135161 states and 159818 transitions. [2019-09-07 22:25:08,119 INFO L476 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-09-07 22:25:08,119 INFO L276 IsEmpty]: Start isEmpty. Operand 135161 states and 159818 transitions. [2019-09-07 22:25:08,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 853 [2019-09-07 22:25:08,260 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:25:08,263 INFO L399 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 22:25:08,263 INFO L418 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:25:08,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:25:08,264 INFO L82 PathProgramCache]: Analyzing trace with hash 281875762, now seen corresponding path program 1 times [2019-09-07 22:25:08,264 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:25:08,264 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:25:08,265 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:25:08,265 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:25:08,265 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:25:08,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:25:09,675 INFO L134 CoverageAnalysis]: Checked inductivity of 1208 backedges. 663 proven. 2 refuted. 0 times theorem prover too weak. 543 trivial. 0 not checked. [2019-09-07 22:25:09,675 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 22:25:09,675 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 [2019-09-07 22:25:09,686 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:25:09,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:25:09,921 INFO L256 TraceCheckSpWp]: Trace formula consists of 1188 conjuncts, 10 conjunts are in the unsatisfiable core [2019-09-07 22:25:09,933 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 22:25:09,940 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:25:09,941 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:25:10,429 INFO L134 CoverageAnalysis]: Checked inductivity of 1208 backedges. 759 proven. 6 refuted. 0 times theorem prover too weak. 443 trivial. 0 not checked. [2019-09-07 22:25:10,440 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 22:25:10,441 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7] total 11 [2019-09-07 22:25:10,442 INFO L454 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-09-07 22:25:10,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-09-07 22:25:10,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2019-09-07 22:25:10,442 INFO L87 Difference]: Start difference. First operand 135161 states and 159818 transitions. Second operand 11 states. [2019-09-07 22:25:26,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:25:26,152 INFO L93 Difference]: Finished difference Result 324093 states and 383925 transitions. [2019-09-07 22:25:26,152 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2019-09-07 22:25:26,152 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 852 [2019-09-07 22:25:26,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:25:26,706 INFO L225 Difference]: With dead ends: 324093 [2019-09-07 22:25:26,706 INFO L226 Difference]: Without dead ends: 188934 [2019-09-07 22:25:26,888 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 944 GetRequests, 889 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1023 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=521, Invalid=2671, Unknown=0, NotChecked=0, Total=3192 [2019-09-07 22:25:27,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188934 states. [2019-09-07 22:25:32,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188934 to 166112. [2019-09-07 22:25:32,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166112 states. [2019-09-07 22:25:32,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166112 states to 166112 states and 192160 transitions. [2019-09-07 22:25:32,579 INFO L78 Accepts]: Start accepts. Automaton has 166112 states and 192160 transitions. Word has length 852 [2019-09-07 22:25:32,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:25:32,580 INFO L475 AbstractCegarLoop]: Abstraction has 166112 states and 192160 transitions. [2019-09-07 22:25:32,581 INFO L476 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-09-07 22:25:32,581 INFO L276 IsEmpty]: Start isEmpty. Operand 166112 states and 192160 transitions. [2019-09-07 22:25:32,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1001 [2019-09-07 22:25:32,750 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:25:32,752 INFO L399 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 22:25:32,752 INFO L418 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:25:32,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:25:32,753 INFO L82 PathProgramCache]: Analyzing trace with hash -1040332951, now seen corresponding path program 1 times [2019-09-07 22:25:32,753 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:25:32,753 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:25:32,754 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:25:32,754 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:25:32,754 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:25:32,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:25:34,039 INFO L134 CoverageAnalysis]: Checked inductivity of 2017 backedges. 216 proven. 6 refuted. 0 times theorem prover too weak. 1795 trivial. 0 not checked. [2019-09-07 22:25:34,039 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 22:25:34,039 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 22:25:34,049 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:25:34,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:25:34,320 INFO L256 TraceCheckSpWp]: Trace formula consists of 1351 conjuncts, 2 conjunts are in the unsatisfiable core [2019-09-07 22:25:34,330 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 22:25:34,638 INFO L134 CoverageAnalysis]: Checked inductivity of 2017 backedges. 1153 proven. 0 refuted. 0 times theorem prover too weak. 864 trivial. 0 not checked. [2019-09-07 22:25:34,643 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 22:25:34,644 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 3 [2019-09-07 22:25:34,645 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-07 22:25:34,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-07 22:25:34,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 22:25:34,646 INFO L87 Difference]: Start difference. First operand 166112 states and 192160 transitions. Second operand 3 states. [2019-09-07 22:25:39,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:25:39,577 INFO L93 Difference]: Finished difference Result 344414 states and 399279 transitions. [2019-09-07 22:25:39,577 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-07 22:25:39,578 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 1000 [2019-09-07 22:25:39,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:25:39,994 INFO L225 Difference]: With dead ends: 344414 [2019-09-07 22:25:39,994 INFO L226 Difference]: Without dead ends: 178748 [2019-09-07 22:25:40,188 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1002 GetRequests, 1001 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 22:25:40,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178748 states. [2019-09-07 22:25:42,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178748 to 173537. [2019-09-07 22:25:42,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173537 states. [2019-09-07 22:25:42,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173537 states to 173537 states and 200415 transitions. [2019-09-07 22:25:42,933 INFO L78 Accepts]: Start accepts. Automaton has 173537 states and 200415 transitions. Word has length 1000 [2019-09-07 22:25:42,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:25:42,934 INFO L475 AbstractCegarLoop]: Abstraction has 173537 states and 200415 transitions. [2019-09-07 22:25:42,935 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-07 22:25:42,935 INFO L276 IsEmpty]: Start isEmpty. Operand 173537 states and 200415 transitions. [2019-09-07 22:25:43,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1012 [2019-09-07 22:25:43,077 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:25:43,078 INFO L399 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 22:25:43,078 INFO L418 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:25:43,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:25:43,079 INFO L82 PathProgramCache]: Analyzing trace with hash -1824214062, now seen corresponding path program 1 times [2019-09-07 22:25:43,079 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:25:43,079 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:25:43,080 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:25:43,080 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:25:43,080 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:25:43,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:25:46,926 INFO L134 CoverageAnalysis]: Checked inductivity of 1886 backedges. 845 proven. 2 refuted. 0 times theorem prover too weak. 1039 trivial. 0 not checked. [2019-09-07 22:25:46,926 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 22:25:46,926 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 22:25:46,937 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:25:47,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:25:47,191 INFO L256 TraceCheckSpWp]: Trace formula consists of 1380 conjuncts, 11 conjunts are in the unsatisfiable core [2019-09-07 22:25:47,199 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 22:25:47,207 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:25:47,207 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:25:47,826 INFO L134 CoverageAnalysis]: Checked inductivity of 1886 backedges. 1455 proven. 6 refuted. 0 times theorem prover too weak. 425 trivial. 0 not checked. [2019-09-07 22:25:47,830 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 22:25:47,830 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7] total 10 [2019-09-07 22:25:47,832 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-09-07 22:25:47,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-09-07 22:25:47,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2019-09-07 22:25:47,833 INFO L87 Difference]: Start difference. First operand 173537 states and 200415 transitions. Second operand 10 states. [2019-09-07 22:26:11,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:26:11,853 INFO L93 Difference]: Finished difference Result 416211 states and 483645 transitions. [2019-09-07 22:26:11,854 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2019-09-07 22:26:11,854 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 1011 [2019-09-07 22:26:11,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:26:12,508 INFO L225 Difference]: With dead ends: 416211 [2019-09-07 22:26:12,508 INFO L226 Difference]: Without dead ends: 248849 [2019-09-07 22:26:12,701 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1090 GetRequests, 1042 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 744 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=427, Invalid=2023, Unknown=0, NotChecked=0, Total=2450 [2019-09-07 22:26:12,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248849 states. [2019-09-07 22:26:15,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248849 to 221818. [2019-09-07 22:26:15,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221818 states. [2019-09-07 22:26:16,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221818 states to 221818 states and 255641 transitions. [2019-09-07 22:26:16,241 INFO L78 Accepts]: Start accepts. Automaton has 221818 states and 255641 transitions. Word has length 1011 [2019-09-07 22:26:16,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:26:16,242 INFO L475 AbstractCegarLoop]: Abstraction has 221818 states and 255641 transitions. [2019-09-07 22:26:16,242 INFO L476 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-09-07 22:26:16,242 INFO L276 IsEmpty]: Start isEmpty. Operand 221818 states and 255641 transitions. [2019-09-07 22:26:16,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1202 [2019-09-07 22:26:16,463 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:26:16,464 INFO L399 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 22:26:16,464 INFO L418 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:26:16,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:26:16,464 INFO L82 PathProgramCache]: Analyzing trace with hash 1407405952, now seen corresponding path program 1 times [2019-09-07 22:26:16,465 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:26:16,465 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:26:16,465 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:26:16,465 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:26:16,465 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:26:16,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:26:21,658 INFO L134 CoverageAnalysis]: Checked inductivity of 1527 backedges. 720 proven. 2 refuted. 0 times theorem prover too weak. 805 trivial. 0 not checked. [2019-09-07 22:26:21,658 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 22:26:21,658 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 [2019-09-07 22:26:21,673 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:26:21,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:26:21,989 INFO L256 TraceCheckSpWp]: Trace formula consists of 1552 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 22:26:21,999 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 22:26:22,019 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:26:22,019 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:26:22,020 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:26:22,021 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:26:22,021 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:26:22,021 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:26:22,022 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:26:22,023 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:26:22,023 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:26:22,024 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:26:22,024 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:26:22,025 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:26:22,025 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:26:22,026 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:26:22,026 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:26:22,027 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:26:22,028 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:26:22,028 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:26:22,029 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:26:22,029 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:26:22,030 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:26:22,031 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:26:22,031 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:26:22,695 INFO L134 CoverageAnalysis]: Checked inductivity of 1527 backedges. 720 proven. 2 refuted. 0 times theorem prover too weak. 805 trivial. 0 not checked. [2019-09-07 22:26:22,699 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 22:26:22,700 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5] total 8 [2019-09-07 22:26:22,701 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-07 22:26:22,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-07 22:26:22,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-09-07 22:26:22,702 INFO L87 Difference]: Start difference. First operand 221818 states and 255641 transitions. Second operand 8 states. [2019-09-07 22:26:29,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:26:29,545 INFO L93 Difference]: Finished difference Result 424238 states and 490552 transitions. [2019-09-07 22:26:29,545 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-09-07 22:26:29,545 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1201 [2019-09-07 22:26:29,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:26:30,081 INFO L225 Difference]: With dead ends: 424238 [2019-09-07 22:26:30,081 INFO L226 Difference]: Without dead ends: 212560 [2019-09-07 22:26:30,273 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1217 GetRequests, 1205 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2019-09-07 22:26:30,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212560 states. [2019-09-07 22:26:32,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212560 to 205842. [2019-09-07 22:26:32,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205842 states. [2019-09-07 22:26:33,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205842 states to 205842 states and 235322 transitions. [2019-09-07 22:26:33,284 INFO L78 Accepts]: Start accepts. Automaton has 205842 states and 235322 transitions. Word has length 1201 [2019-09-07 22:26:33,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:26:33,286 INFO L475 AbstractCegarLoop]: Abstraction has 205842 states and 235322 transitions. [2019-09-07 22:26:33,286 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-07 22:26:33,286 INFO L276 IsEmpty]: Start isEmpty. Operand 205842 states and 235322 transitions. [2019-09-07 22:26:33,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1382 [2019-09-07 22:26:33,492 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:26:33,493 INFO L399 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 22:26:33,493 INFO L418 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:26:33,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:26:33,494 INFO L82 PathProgramCache]: Analyzing trace with hash -2025167371, now seen corresponding path program 1 times [2019-09-07 22:26:33,494 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:26:33,494 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:26:33,495 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:26:33,495 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:26:33,495 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:26:33,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:26:36,485 INFO L134 CoverageAnalysis]: Checked inductivity of 1862 backedges. 1001 proven. 33 refuted. 0 times theorem prover too weak. 828 trivial. 0 not checked. [2019-09-07 22:26:36,485 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 22:26:36,485 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 [2019-09-07 22:26:36,495 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:26:36,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:26:36,834 INFO L256 TraceCheckSpWp]: Trace formula consists of 1757 conjuncts, 10 conjunts are in the unsatisfiable core [2019-09-07 22:26:36,845 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 22:26:36,862 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:26:40,420 INFO L134 CoverageAnalysis]: Checked inductivity of 1862 backedges. 1001 proven. 33 refuted. 0 times theorem prover too weak. 828 trivial. 0 not checked. [2019-09-07 22:26:40,424 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 22:26:40,425 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2019-09-07 22:26:40,426 INFO L454 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-09-07 22:26:40,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-09-07 22:26:40,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2019-09-07 22:26:40,427 INFO L87 Difference]: Start difference. First operand 205842 states and 235322 transitions. Second operand 11 states. [2019-09-07 22:26:58,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:26:58,805 INFO L93 Difference]: Finished difference Result 488849 states and 557137 transitions. [2019-09-07 22:26:58,808 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2019-09-07 22:26:58,808 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 1381 [2019-09-07 22:26:58,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:26:58,814 INFO L225 Difference]: With dead ends: 488849 [2019-09-07 22:26:58,815 INFO L226 Difference]: Without dead ends: 0 [2019-09-07 22:26:59,142 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1470 GetRequests, 1420 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 871 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=537, Invalid=2115, Unknown=0, NotChecked=0, Total=2652 [2019-09-07 22:26:59,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-07 22:26:59,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-07 22:26:59,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-07 22:26:59,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-07 22:26:59,146 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 1381 [2019-09-07 22:26:59,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:26:59,146 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-07 22:26:59,147 INFO L476 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-09-07 22:26:59,147 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-07 22:26:59,147 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-07 22:26:59,151 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-09-07 22:27:01,355 WARN L188 SmtUtils]: Spent 629.00 ms on a formula simplification that was a NOOP. DAG size: 57 [2019-09-07 22:27:05,462 WARN L188 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 103 DAG size of output: 100 [2019-09-07 22:27:26,276 WARN L188 SmtUtils]: Spent 20.56 s on a formula simplification. DAG size of input: 3166 DAG size of output: 1960 [2019-09-07 22:27:48,858 WARN L188 SmtUtils]: Spent 20.50 s on a formula simplification. DAG size of input: 3166 DAG size of output: 1960 [2019-09-07 22:27:49,001 WARN L188 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 37 [2019-09-07 22:28:52,710 WARN L188 SmtUtils]: Spent 1.06 m on a formula simplification. DAG size of input: 2334 DAG size of output: 154 [2019-09-07 22:29:53,184 WARN L188 SmtUtils]: Spent 1.00 m on a formula simplification. DAG size of input: 2334 DAG size of output: 154