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/Problem19_label57.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-07 23:31:32,799 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-07 23:31:32,801 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-07 23:31:32,817 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-07 23:31:32,874 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-07 23:31:32,877 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-07 23:31:32,877 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-07 23:31:32,878 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 23:31:32,892 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-07 23:31:32,892 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-07 23:31:32,894 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-07 23:31:32,894 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-07 23:31:32,894 INFO L138 SettingsManager]: * Use SBE=true [2019-09-07 23:31:32,894 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-07 23:31:32,895 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-07 23:31:32,895 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-07 23:31:32,895 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-07 23:31:32,895 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-07 23:31:32,895 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-07 23:31:32,896 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-07 23:31:32,896 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-07 23:31:32,896 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-07 23:31:32,896 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-07 23:31:32,896 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-07 23:31:32,897 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-07 23:31:32,897 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-07 23:31:32,897 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-07 23:31:32,897 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-07 23:31:32,897 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-07 23:31:32,898 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-07 23:31:32,898 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-07 23:31:32,898 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-07 23:31:32,898 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-07 23:31:32,898 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-07 23:31:32,899 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-07 23:31:32,899 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-07 23:31:32,899 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-07 23:31:32,933 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-07 23:31:32,946 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-07 23:31:32,949 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-07 23:31:32,951 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-07 23:31:32,951 INFO L275 PluginConnector]: CDTParser initialized [2019-09-07 23:31:32,952 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label57.c [2019-09-07 23:31:33,014 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb0da527f/02d53e3b2d484ebe8cec7eb085586a77/FLAG353682a89 [2019-09-07 23:31:33,983 INFO L306 CDTParser]: Found 1 translation units. [2019-09-07 23:31:33,984 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label57.c [2019-09-07 23:31:34,040 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb0da527f/02d53e3b2d484ebe8cec7eb085586a77/FLAG353682a89 [2019-09-07 23:31:34,352 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb0da527f/02d53e3b2d484ebe8cec7eb085586a77 [2019-09-07 23:31:34,363 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-07 23:31:34,365 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-07 23:31:34,366 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-07 23:31:34,367 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-07 23:31:34,370 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-07 23:31:34,371 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 11:31:34" (1/1) ... [2019-09-07 23:31:34,374 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52a46f79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:31:34, skipping insertion in model container [2019-09-07 23:31:34,374 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 11:31:34" (1/1) ... [2019-09-07 23:31:34,381 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-07 23:31:34,616 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-07 23:31:37,054 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 23:31:37,066 INFO L188 MainTranslator]: Completed pre-run [2019-09-07 23:31:38,318 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 23:31:38,374 INFO L192 MainTranslator]: Completed translation [2019-09-07 23:31:38,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:31:38 WrapperNode [2019-09-07 23:31:38,375 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-07 23:31:38,376 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-07 23:31:38,376 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-07 23:31:38,376 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-07 23:31:38,392 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:31:38" (1/1) ... [2019-09-07 23:31:38,392 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:31:38" (1/1) ... [2019-09-07 23:31:38,479 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:31:38" (1/1) ... [2019-09-07 23:31:38,480 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:31:38" (1/1) ... [2019-09-07 23:31:38,678 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:31:38" (1/1) ... [2019-09-07 23:31:38,717 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:31:38" (1/1) ... [2019-09-07 23:31:38,766 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:31:38" (1/1) ... [2019-09-07 23:31:38,853 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-07 23:31:38,853 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-07 23:31:38,854 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-07 23:31:38,854 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-07 23:31:38,855 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:31:38" (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 23:31:38,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-07 23:31:38,933 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-07 23:31:38,934 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-07 23:31:38,934 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-09-07 23:31:38,934 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-09-07 23:31:38,934 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-09-07 23:31:38,934 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2019-09-07 23:31:38,935 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2019-09-07 23:31:38,935 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-07 23:31:38,936 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-07 23:31:38,936 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-09-07 23:31:38,937 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-09-07 23:31:38,938 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-09-07 23:31:38,938 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2019-09-07 23:31:38,939 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2019-09-07 23:31:38,939 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-07 23:31:38,942 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-07 23:31:38,942 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-07 23:31:38,942 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-07 23:31:38,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-07 23:31:38,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-07 23:31:49,979 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-07 23:31:49,979 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-07 23:31:49,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 11:31:49 BoogieIcfgContainer [2019-09-07 23:31:49,982 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-07 23:31:49,983 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-07 23:31:49,983 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-07 23:31:49,986 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-07 23:31:49,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.09 11:31:34" (1/3) ... [2019-09-07 23:31:49,988 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f801dcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 11:31:49, skipping insertion in model container [2019-09-07 23:31:49,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 11:31:38" (2/3) ... [2019-09-07 23:31:49,988 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f801dcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 11:31:49, skipping insertion in model container [2019-09-07 23:31:49,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 11:31:49" (3/3) ... [2019-09-07 23:31:49,993 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem19_label57.c [2019-09-07 23:31:50,010 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-07 23:31:50,023 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-07 23:31:50,044 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-07 23:31:50,105 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-07 23:31:50,106 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-07 23:31:50,106 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-07 23:31:50,106 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-07 23:31:50,106 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-07 23:31:50,107 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-07 23:31:50,107 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-07 23:31:50,107 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-07 23:31:50,107 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-07 23:31:50,160 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states. [2019-09-07 23:31:50,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2019-09-07 23:31:50,172 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:31:50,173 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 23:31:50,175 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:31:50,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:31:50,182 INFO L82 PathProgramCache]: Analyzing trace with hash -1799424158, now seen corresponding path program 1 times [2019-09-07 23:31:50,184 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:31:50,185 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:31:50,242 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:31:50,242 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:31:50,242 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:31:50,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:31:50,600 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 23:31:50,603 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 23:31:50,604 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-07 23:31:50,608 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-07 23:31:50,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-07 23:31:50,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 23:31:50,626 INFO L87 Difference]: Start difference. First operand 1777 states. Second operand 3 states. [2019-09-07 23:32:01,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:32:01,634 INFO L93 Difference]: Finished difference Result 4995 states and 9414 transitions. [2019-09-07 23:32:01,644 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-07 23:32:01,645 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 62 [2019-09-07 23:32:01,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:32:01,693 INFO L225 Difference]: With dead ends: 4995 [2019-09-07 23:32:01,693 INFO L226 Difference]: Without dead ends: 3156 [2019-09-07 23:32:01,705 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 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 23:32:01,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3156 states. [2019-09-07 23:32:01,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3156 to 3153. [2019-09-07 23:32:01,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3153 states. [2019-09-07 23:32:01,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3153 states to 3153 states and 5691 transitions. [2019-09-07 23:32:01,897 INFO L78 Accepts]: Start accepts. Automaton has 3153 states and 5691 transitions. Word has length 62 [2019-09-07 23:32:01,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:32:01,898 INFO L475 AbstractCegarLoop]: Abstraction has 3153 states and 5691 transitions. [2019-09-07 23:32:01,898 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-07 23:32:01,898 INFO L276 IsEmpty]: Start isEmpty. Operand 3153 states and 5691 transitions. [2019-09-07 23:32:01,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2019-09-07 23:32:01,905 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:32:01,905 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, 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] [2019-09-07 23:32:01,905 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:32:01,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:32:01,906 INFO L82 PathProgramCache]: Analyzing trace with hash 865533871, now seen corresponding path program 1 times [2019-09-07 23:32:01,906 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:32:01,906 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:32:01,908 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:32:01,908 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:32:01,908 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:32:01,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:32:02,180 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 23:32:02,180 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 23:32:02,181 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-07 23:32:02,183 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 23:32:02,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 23:32:02,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-07 23:32:02,184 INFO L87 Difference]: Start difference. First operand 3153 states and 5691 transitions. Second operand 6 states. [2019-09-07 23:32:16,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:32:16,248 INFO L93 Difference]: Finished difference Result 7845 states and 14066 transitions. [2019-09-07 23:32:16,250 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-07 23:32:16,251 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 133 [2019-09-07 23:32:16,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:32:16,276 INFO L225 Difference]: With dead ends: 7845 [2019-09-07 23:32:16,277 INFO L226 Difference]: Without dead ends: 4698 [2019-09-07 23:32:16,285 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-09-07 23:32:16,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4698 states. [2019-09-07 23:32:16,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4698 to 4645. [2019-09-07 23:32:16,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4645 states. [2019-09-07 23:32:16,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4645 states to 4645 states and 7795 transitions. [2019-09-07 23:32:16,397 INFO L78 Accepts]: Start accepts. Automaton has 4645 states and 7795 transitions. Word has length 133 [2019-09-07 23:32:16,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:32:16,397 INFO L475 AbstractCegarLoop]: Abstraction has 4645 states and 7795 transitions. [2019-09-07 23:32:16,397 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 23:32:16,398 INFO L276 IsEmpty]: Start isEmpty. Operand 4645 states and 7795 transitions. [2019-09-07 23:32:16,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2019-09-07 23:32:16,401 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:32:16,401 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, 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] [2019-09-07 23:32:16,401 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:32:16,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:32:16,402 INFO L82 PathProgramCache]: Analyzing trace with hash -1968979388, now seen corresponding path program 1 times [2019-09-07 23:32:16,402 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:32:16,402 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:32:16,403 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:32:16,403 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:32:16,403 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:32:16,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:32:16,580 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 23:32:16,580 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 23:32:16,581 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-07 23:32:16,581 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 23:32:16,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 23:32:16,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-07 23:32:16,582 INFO L87 Difference]: Start difference. First operand 4645 states and 7795 transitions. Second operand 6 states. [2019-09-07 23:32:31,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:32:31,954 INFO L93 Difference]: Finished difference Result 13954 states and 23756 transitions. [2019-09-07 23:32:31,956 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-07 23:32:31,957 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 135 [2019-09-07 23:32:31,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:32:32,008 INFO L225 Difference]: With dead ends: 13954 [2019-09-07 23:32:32,017 INFO L226 Difference]: Without dead ends: 9315 [2019-09-07 23:32:32,029 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-09-07 23:32:32,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9315 states. [2019-09-07 23:32:32,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9315 to 9121. [2019-09-07 23:32:32,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9121 states. [2019-09-07 23:32:32,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9121 states to 9121 states and 15295 transitions. [2019-09-07 23:32:32,312 INFO L78 Accepts]: Start accepts. Automaton has 9121 states and 15295 transitions. Word has length 135 [2019-09-07 23:32:32,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:32:32,314 INFO L475 AbstractCegarLoop]: Abstraction has 9121 states and 15295 transitions. [2019-09-07 23:32:32,314 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 23:32:32,315 INFO L276 IsEmpty]: Start isEmpty. Operand 9121 states and 15295 transitions. [2019-09-07 23:32:32,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2019-09-07 23:32:32,321 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:32:32,321 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, 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 23:32:32,322 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:32:32,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:32:32,322 INFO L82 PathProgramCache]: Analyzing trace with hash 374286243, now seen corresponding path program 1 times [2019-09-07 23:32:32,322 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:32:32,322 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:32:32,323 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:32:32,323 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:32:32,324 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:32:32,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:32:32,537 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 23:32:32,538 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 23:32:32,538 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-07 23:32:32,539 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 23:32:32,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 23:32:32,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-09-07 23:32:32,540 INFO L87 Difference]: Start difference. First operand 9121 states and 15295 transitions. Second operand 6 states. [2019-09-07 23:32:58,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:32:58,513 INFO L93 Difference]: Finished difference Result 35957 states and 63876 transitions. [2019-09-07 23:32:58,514 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-07 23:32:58,514 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 157 [2019-09-07 23:32:58,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:32:58,628 INFO L225 Difference]: With dead ends: 35957 [2019-09-07 23:32:58,628 INFO L226 Difference]: Without dead ends: 26842 [2019-09-07 23:32:58,656 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-09-07 23:32:58,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26842 states. [2019-09-07 23:32:59,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26842 to 26785. [2019-09-07 23:32:59,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26785 states. [2019-09-07 23:32:59,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26785 states to 26785 states and 42356 transitions. [2019-09-07 23:32:59,534 INFO L78 Accepts]: Start accepts. Automaton has 26785 states and 42356 transitions. Word has length 157 [2019-09-07 23:32:59,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:32:59,536 INFO L475 AbstractCegarLoop]: Abstraction has 26785 states and 42356 transitions. [2019-09-07 23:32:59,536 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 23:32:59,536 INFO L276 IsEmpty]: Start isEmpty. Operand 26785 states and 42356 transitions. [2019-09-07 23:32:59,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2019-09-07 23:32:59,540 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:32:59,540 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 23:32:59,541 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:32:59,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:32:59,541 INFO L82 PathProgramCache]: Analyzing trace with hash -1470004161, now seen corresponding path program 1 times [2019-09-07 23:32:59,542 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:32:59,542 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:32:59,542 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:32:59,543 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:32:59,543 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:32:59,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:32:59,677 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 23:32:59,678 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 23:32:59,678 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-07 23:32:59,679 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-07 23:32:59,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-07 23:32:59,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-07 23:32:59,680 INFO L87 Difference]: Start difference. First operand 26785 states and 42356 transitions. Second operand 5 states. [2019-09-07 23:33:16,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:33:16,887 INFO L93 Difference]: Finished difference Result 81280 states and 138344 transitions. [2019-09-07 23:33:16,888 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-07 23:33:16,888 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 166 [2019-09-07 23:33:16,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:33:17,151 INFO L225 Difference]: With dead ends: 81280 [2019-09-07 23:33:17,151 INFO L226 Difference]: Without dead ends: 54501 [2019-09-07 23:33:17,242 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 23:33:17,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54501 states. [2019-09-07 23:33:20,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54501 to 53944. [2019-09-07 23:33:20,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53944 states. [2019-09-07 23:33:20,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53944 states to 53944 states and 80603 transitions. [2019-09-07 23:33:20,642 INFO L78 Accepts]: Start accepts. Automaton has 53944 states and 80603 transitions. Word has length 166 [2019-09-07 23:33:20,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:33:20,643 INFO L475 AbstractCegarLoop]: Abstraction has 53944 states and 80603 transitions. [2019-09-07 23:33:20,643 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-07 23:33:20,643 INFO L276 IsEmpty]: Start isEmpty. Operand 53944 states and 80603 transitions. [2019-09-07 23:33:20,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2019-09-07 23:33:20,647 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:33:20,648 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, 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] [2019-09-07 23:33:20,648 INFO L418 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:33:20,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:33:20,649 INFO L82 PathProgramCache]: Analyzing trace with hash -642360608, now seen corresponding path program 1 times [2019-09-07 23:33:20,649 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:33:20,649 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:33:20,650 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:33:20,650 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:33:20,650 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:33:20,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:33:20,853 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 23:33:20,854 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 23:33:20,854 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-07 23:33:20,854 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 23:33:20,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 23:33:20,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-07 23:33:20,855 INFO L87 Difference]: Start difference. First operand 53944 states and 80603 transitions. Second operand 6 states. [2019-09-07 23:33:35,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:33:35,119 INFO L93 Difference]: Finished difference Result 124814 states and 196113 transitions. [2019-09-07 23:33:35,120 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-07 23:33:35,120 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 194 [2019-09-07 23:33:35,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:33:35,389 INFO L225 Difference]: With dead ends: 124814 [2019-09-07 23:33:35,389 INFO L226 Difference]: Without dead ends: 70876 [2019-09-07 23:33:35,469 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-09-07 23:33:35,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70876 states. [2019-09-07 23:33:38,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70876 to 70649. [2019-09-07 23:33:38,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70649 states. [2019-09-07 23:33:39,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70649 states to 70649 states and 104478 transitions. [2019-09-07 23:33:39,132 INFO L78 Accepts]: Start accepts. Automaton has 70649 states and 104478 transitions. Word has length 194 [2019-09-07 23:33:39,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:33:39,134 INFO L475 AbstractCegarLoop]: Abstraction has 70649 states and 104478 transitions. [2019-09-07 23:33:39,135 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 23:33:39,135 INFO L276 IsEmpty]: Start isEmpty. Operand 70649 states and 104478 transitions. [2019-09-07 23:33:39,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2019-09-07 23:33:39,141 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:33:39,141 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 23:33:39,141 INFO L418 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:33:39,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:33:39,147 INFO L82 PathProgramCache]: Analyzing trace with hash -873617114, now seen corresponding path program 1 times [2019-09-07 23:33:39,147 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:33:39,147 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:33:39,149 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:33:39,149 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:33:39,150 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:33:39,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:33:39,313 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 110 proven. 65 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-07 23:33:39,313 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 23:33:39,313 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 23:33:39,336 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:33:39,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:33:39,429 INFO L256 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 2 conjunts are in the unsatisfiable core [2019-09-07 23:33:39,452 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 23:33:39,559 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2019-09-07 23:33:39,573 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 23:33:39,573 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2019-09-07 23:33:39,574 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-07 23:33:39,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-07 23:33:39,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-09-07 23:33:39,575 INFO L87 Difference]: Start difference. First operand 70649 states and 104478 transitions. Second operand 7 states. [2019-09-07 23:34:01,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:34:01,893 INFO L93 Difference]: Finished difference Result 192441 states and 304009 transitions. [2019-09-07 23:34:01,893 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-09-07 23:34:01,893 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 231 [2019-09-07 23:34:01,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:34:02,530 INFO L225 Difference]: With dead ends: 192441 [2019-09-07 23:34:02,530 INFO L226 Difference]: Without dead ends: 121798 [2019-09-07 23:34:02,836 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2019-09-07 23:34:02,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121798 states. [2019-09-07 23:34:09,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121798 to 118705. [2019-09-07 23:34:09,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118705 states. [2019-09-07 23:34:10,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118705 states to 118705 states and 163315 transitions. [2019-09-07 23:34:10,037 INFO L78 Accepts]: Start accepts. Automaton has 118705 states and 163315 transitions. Word has length 231 [2019-09-07 23:34:10,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:34:10,037 INFO L475 AbstractCegarLoop]: Abstraction has 118705 states and 163315 transitions. [2019-09-07 23:34:10,037 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-07 23:34:10,038 INFO L276 IsEmpty]: Start isEmpty. Operand 118705 states and 163315 transitions. [2019-09-07 23:34:10,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2019-09-07 23:34:10,043 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:34:10,044 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:34:10,044 INFO L418 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:34:10,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:34:10,044 INFO L82 PathProgramCache]: Analyzing trace with hash 1956962112, now seen corresponding path program 1 times [2019-09-07 23:34:10,045 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:34:10,045 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:34:10,046 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:34:10,046 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:34:10,046 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:34:10,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:34:10,222 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 110 proven. 77 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-07 23:34:10,222 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 23:34:10,223 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-07 23:34:10,236 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 23:34:10,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:34:10,325 INFO L256 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 2 conjunts are in the unsatisfiable core [2019-09-07 23:34:10,340 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 23:34:10,391 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2019-09-07 23:34:10,397 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 23:34:10,397 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2019-09-07 23:34:10,398 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-07 23:34:10,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-07 23:34:10,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-09-07 23:34:10,399 INFO L87 Difference]: Start difference. First operand 118705 states and 163315 transitions. Second operand 7 states. [2019-09-07 23:34:41,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:34:41,906 INFO L93 Difference]: Finished difference Result 432644 states and 634128 transitions. [2019-09-07 23:34:41,907 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-09-07 23:34:41,907 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 266 [2019-09-07 23:34:41,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:34:42,903 INFO L225 Difference]: With dead ends: 432644 [2019-09-07 23:34:42,903 INFO L226 Difference]: Without dead ends: 313945 [2019-09-07 23:34:43,100 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 279 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2019-09-07 23:34:43,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313945 states. [2019-09-07 23:34:51,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313945 to 279991. [2019-09-07 23:34:51,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 279991 states. [2019-09-07 23:34:53,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279991 states to 279991 states and 381560 transitions. [2019-09-07 23:34:53,063 INFO L78 Accepts]: Start accepts. Automaton has 279991 states and 381560 transitions. Word has length 266 [2019-09-07 23:34:53,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:34:53,063 INFO L475 AbstractCegarLoop]: Abstraction has 279991 states and 381560 transitions. [2019-09-07 23:34:53,063 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-07 23:34:53,063 INFO L276 IsEmpty]: Start isEmpty. Operand 279991 states and 381560 transitions. [2019-09-07 23:34:53,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1244 [2019-09-07 23:34:53,152 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:34:53,153 INFO L399 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:34:53,153 INFO L418 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:34:53,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:34:53,154 INFO L82 PathProgramCache]: Analyzing trace with hash 314164045, now seen corresponding path program 1 times [2019-09-07 23:34:53,154 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:34:53,154 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:34:53,155 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:34:53,155 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:34:53,156 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:34:53,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:34:55,525 INFO L134 CoverageAnalysis]: Checked inductivity of 1314 backedges. 908 proven. 2 refuted. 0 times theorem prover too weak. 404 trivial. 0 not checked. [2019-09-07 23:34:55,526 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 23:34:55,526 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 23:34:55,537 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:34:55,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:34:55,871 INFO L256 TraceCheckSpWp]: Trace formula consists of 1593 conjuncts, 9 conjunts are in the unsatisfiable core [2019-09-07 23:34:55,895 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 23:34:57,885 INFO L134 CoverageAnalysis]: Checked inductivity of 1314 backedges. 1001 proven. 6 refuted. 0 times theorem prover too weak. 307 trivial. 0 not checked. [2019-09-07 23:34:57,893 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 23:34:57,894 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2019-09-07 23:34:57,895 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 23:34:57,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 23:34:57,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 23:34:57,897 INFO L87 Difference]: Start difference. First operand 279991 states and 381560 transitions. Second operand 9 states. [2019-09-07 23:35:38,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:35:38,447 INFO L93 Difference]: Finished difference Result 701688 states and 973293 transitions. [2019-09-07 23:35:38,447 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-09-07 23:35:38,447 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1243 [2019-09-07 23:35:38,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:35:39,734 INFO L225 Difference]: With dead ends: 701688 [2019-09-07 23:35:39,734 INFO L226 Difference]: Without dead ends: 421703 [2019-09-07 23:35:45,492 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1270 GetRequests, 1253 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2019-09-07 23:35:45,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421703 states. [2019-09-07 23:35:52,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421703 to 415073. [2019-09-07 23:35:52,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 415073 states. [2019-09-07 23:35:53,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 415073 states to 415073 states and 539067 transitions. [2019-09-07 23:35:53,019 INFO L78 Accepts]: Start accepts. Automaton has 415073 states and 539067 transitions. Word has length 1243 [2019-09-07 23:35:53,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:35:53,021 INFO L475 AbstractCegarLoop]: Abstraction has 415073 states and 539067 transitions. [2019-09-07 23:35:53,022 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 23:35:53,022 INFO L276 IsEmpty]: Start isEmpty. Operand 415073 states and 539067 transitions. [2019-09-07 23:35:53,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1273 [2019-09-07 23:35:53,127 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:35:53,128 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, 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:35:53,128 INFO L418 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:35:53,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:35:53,129 INFO L82 PathProgramCache]: Analyzing trace with hash -254721669, now seen corresponding path program 1 times [2019-09-07 23:35:53,129 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:35:53,129 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:35:53,132 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:35:53,133 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:35:53,133 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:35:53,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:36:00,016 INFO L134 CoverageAnalysis]: Checked inductivity of 1837 backedges. 620 proven. 265 refuted. 0 times theorem prover too weak. 952 trivial. 0 not checked. [2019-09-07 23:36:00,017 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 23:36:00,017 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 23:36:00,027 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:36:00,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:36:00,361 INFO L256 TraceCheckSpWp]: Trace formula consists of 1642 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 23:36:00,374 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 23:36:01,023 INFO L134 CoverageAnalysis]: Checked inductivity of 1837 backedges. 1409 proven. 2 refuted. 0 times theorem prover too weak. 426 trivial. 0 not checked. [2019-09-07 23:36:01,027 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 23:36:01,028 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 23:36:01,030 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 23:36:01,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 23:36:01,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 23:36:01,031 INFO L87 Difference]: Start difference. First operand 415073 states and 539067 transitions. Second operand 9 states. [2019-09-07 23:36:40,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:36:40,189 INFO L93 Difference]: Finished difference Result 1025796 states and 1431254 transitions. [2019-09-07 23:36:40,189 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-09-07 23:36:40,189 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1272 [2019-09-07 23:36:40,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:36:42,433 INFO L225 Difference]: With dead ends: 1025796 [2019-09-07 23:36:42,433 INFO L226 Difference]: Without dead ends: 610729 [2019-09-07 23:36:44,513 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1295 GetRequests, 1279 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2019-09-07 23:36:44,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610729 states. [2019-09-07 23:37:03,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610729 to 594355. [2019-09-07 23:37:03,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 594355 states. [2019-09-07 23:37:16,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594355 states to 594355 states and 796708 transitions. [2019-09-07 23:37:16,358 INFO L78 Accepts]: Start accepts. Automaton has 594355 states and 796708 transitions. Word has length 1272 [2019-09-07 23:37:16,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:37:16,360 INFO L475 AbstractCegarLoop]: Abstraction has 594355 states and 796708 transitions. [2019-09-07 23:37:16,360 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 23:37:16,360 INFO L276 IsEmpty]: Start isEmpty. Operand 594355 states and 796708 transitions. [2019-09-07 23:37:16,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1288 [2019-09-07 23:37:16,421 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:37:16,422 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, 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, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:37:16,423 INFO L418 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:37:16,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:37:16,423 INFO L82 PathProgramCache]: Analyzing trace with hash -1381018863, now seen corresponding path program 1 times [2019-09-07 23:37:16,423 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:37:16,424 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:37:16,425 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:37:16,425 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:37:16,425 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:37:16,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:37:26,824 INFO L134 CoverageAnalysis]: Checked inductivity of 2094 backedges. 854 proven. 639 refuted. 0 times theorem prover too weak. 601 trivial. 0 not checked. [2019-09-07 23:37:26,824 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 23:37:26,824 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 23:37:26,837 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:37:27,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:37:27,139 INFO L256 TraceCheckSpWp]: Trace formula consists of 1702 conjuncts, 5 conjunts are in the unsatisfiable core [2019-09-07 23:37:27,154 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 23:37:27,832 INFO L134 CoverageAnalysis]: Checked inductivity of 2094 backedges. 1428 proven. 2 refuted. 0 times theorem prover too weak. 664 trivial. 0 not checked. [2019-09-07 23:37:27,836 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 23:37:27,837 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 6] total 21 [2019-09-07 23:37:27,838 INFO L454 AbstractCegarLoop]: Interpolant automaton has 21 states [2019-09-07 23:37:27,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2019-09-07 23:37:27,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2019-09-07 23:37:27,839 INFO L87 Difference]: Start difference. First operand 594355 states and 796708 transitions. Second operand 21 states. [2019-09-07 23:38:19,903 WARN L188 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 34 [2019-09-07 23:38:42,302 WARN L188 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 45 [2019-09-07 23:39:32,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:39:32,942 INFO L93 Difference]: Finished difference Result 1733073 states and 2420837 transitions. [2019-09-07 23:39:32,942 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 214 states. [2019-09-07 23:39:32,942 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 1287 [2019-09-07 23:39:32,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:39:49,228 INFO L225 Difference]: With dead ends: 1733073 [2019-09-07 23:39:49,229 INFO L226 Difference]: Without dead ends: 1086431 [2019-09-07 23:39:50,671 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1687 GetRequests, 1461 SyntacticMatches, 0 SemanticMatches, 226 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21920 ImplicationChecksByTransitivity, 11.5s TimeCoverageRelationStatistics Valid=6087, Invalid=45669, Unknown=0, NotChecked=0, Total=51756 [2019-09-07 23:39:51,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1086431 states. [2019-09-07 23:40:23,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1086431 to 1019463. [2019-09-07 23:40:23,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1019463 states. [2019-09-07 23:40:42,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1019463 states to 1019463 states and 1184023 transitions. [2019-09-07 23:40:42,237 INFO L78 Accepts]: Start accepts. Automaton has 1019463 states and 1184023 transitions. Word has length 1287 [2019-09-07 23:40:42,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 23:40:42,238 INFO L475 AbstractCegarLoop]: Abstraction has 1019463 states and 1184023 transitions. [2019-09-07 23:40:42,238 INFO L476 AbstractCegarLoop]: Interpolant automaton has 21 states. [2019-09-07 23:40:42,239 INFO L276 IsEmpty]: Start isEmpty. Operand 1019463 states and 1184023 transitions. [2019-09-07 23:40:42,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1496 [2019-09-07 23:40:42,265 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 23:40:42,266 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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 23:40:42,267 INFO L418 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 23:40:42,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 23:40:42,268 INFO L82 PathProgramCache]: Analyzing trace with hash 1880387246, now seen corresponding path program 1 times [2019-09-07 23:40:42,268 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 23:40:42,268 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 23:40:42,269 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:40:42,269 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:40:42,269 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 23:40:42,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:40:54,867 INFO L134 CoverageAnalysis]: Checked inductivity of 1096 backedges. 605 proven. 2 refuted. 0 times theorem prover too weak. 489 trivial. 0 not checked. [2019-09-07 23:40:54,867 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 23:40:54,867 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 23:40:54,883 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 23:40:55,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 23:40:55,247 INFO L256 TraceCheckSpWp]: Trace formula consists of 1828 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 23:40:55,265 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 23:40:56,642 INFO L134 CoverageAnalysis]: Checked inductivity of 1096 backedges. 605 proven. 2 refuted. 0 times theorem prover too weak. 489 trivial. 0 not checked. [2019-09-07 23:40:56,661 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 23:40:56,662 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 23:40:56,664 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 23:40:56,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 23:40:56,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 23:40:56,665 INFO L87 Difference]: Start difference. First operand 1019463 states and 1184023 transitions. Second operand 9 states. [2019-09-07 23:41:52,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 23:41:52,374 INFO L93 Difference]: Finished difference Result 2250654 states and 2770038 transitions. [2019-09-07 23:41:52,374 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-09-07 23:41:52,374 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1495 [2019-09-07 23:41:52,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 23:41:57,855 INFO L225 Difference]: With dead ends: 2250654 [2019-09-07 23:41:57,855 INFO L226 Difference]: Without dead ends: 1229804 [2019-09-07 23:41:59,718 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1522 GetRequests, 1504 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2019-09-07 23:42:00,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1229804 states.