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/Problem12_label44.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-07 19:04:27,955 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-07 19:04:27,957 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-07 19:04:27,970 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-07 19:04:27,986 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-07 19:04:27,990 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-07 19:04:27,992 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-07 19:04:27,993 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-07 19:04:27,994 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-07 19:04:27,997 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-07 19:04:27,998 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-07 19:04:28,001 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-07 19:04:28,005 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-07 19:04:28,008 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-07 19:04:28,010 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-07 19:04:28,011 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-07 19:04:28,014 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-07 19:04:28,025 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-07 19:04:28,028 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-07 19:04:28,029 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-07 19:04:28,030 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 19:04:28,046 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-07 19:04:28,047 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-07 19:04:28,048 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-07 19:04:28,048 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-07 19:04:28,048 INFO L138 SettingsManager]: * Use SBE=true [2019-09-07 19:04:28,048 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-07 19:04:28,049 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-07 19:04:28,049 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-07 19:04:28,049 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-07 19:04:28,049 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-07 19:04:28,049 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-07 19:04:28,050 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-07 19:04:28,050 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-07 19:04:28,050 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-07 19:04:28,050 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-07 19:04:28,050 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-07 19:04:28,051 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-07 19:04:28,051 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-07 19:04:28,051 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-07 19:04:28,051 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-07 19:04:28,051 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-07 19:04:28,052 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-07 19:04:28,052 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-07 19:04:28,052 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-07 19:04:28,052 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-07 19:04:28,052 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-07 19:04:28,053 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-07 19:04:28,053 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-07 19:04:28,053 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-07 19:04:28,080 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-07 19:04:28,091 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-07 19:04:28,095 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-07 19:04:28,096 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-07 19:04:28,097 INFO L275 PluginConnector]: CDTParser initialized [2019-09-07 19:04:28,097 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label44.c [2019-09-07 19:04:28,179 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4439d713e/3803055dda9147e9a9bf83031c90dec1/FLAGbd7f240c9 [2019-09-07 19:04:28,947 INFO L306 CDTParser]: Found 1 translation units. [2019-09-07 19:04:28,950 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label44.c [2019-09-07 19:04:28,992 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4439d713e/3803055dda9147e9a9bf83031c90dec1/FLAGbd7f240c9 [2019-09-07 19:04:29,475 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4439d713e/3803055dda9147e9a9bf83031c90dec1 [2019-09-07 19:04:29,486 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-07 19:04:29,487 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-07 19:04:29,488 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-07 19:04:29,489 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-07 19:04:29,492 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-07 19:04:29,493 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 07:04:29" (1/1) ... [2019-09-07 19:04:29,496 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b0885a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:04:29, skipping insertion in model container [2019-09-07 19:04:29,496 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 07:04:29" (1/1) ... [2019-09-07 19:04:29,503 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-07 19:04:29,661 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-07 19:04:30,899 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 19:04:30,913 INFO L188 MainTranslator]: Completed pre-run [2019-09-07 19:04:31,609 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 19:04:31,641 INFO L192 MainTranslator]: Completed translation [2019-09-07 19:04:31,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:04:31 WrapperNode [2019-09-07 19:04:31,643 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-07 19:04:31,643 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-07 19:04:31,643 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-07 19:04:31,644 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-07 19:04:31,657 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:04:31" (1/1) ... [2019-09-07 19:04:31,658 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:04:31" (1/1) ... [2019-09-07 19:04:31,717 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:04:31" (1/1) ... [2019-09-07 19:04:31,718 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:04:31" (1/1) ... [2019-09-07 19:04:31,836 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:04:31" (1/1) ... [2019-09-07 19:04:31,870 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:04:31" (1/1) ... [2019-09-07 19:04:31,898 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:04:31" (1/1) ... [2019-09-07 19:04:31,925 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-07 19:04:31,926 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-07 19:04:31,926 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-07 19:04:31,926 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-07 19:04:31,928 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:04:31" (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 19:04:32,013 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-07 19:04:32,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-07 19:04:32,014 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-07 19:04:32,014 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-09-07 19:04:32,015 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-09-07 19:04:32,015 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-09-07 19:04:32,015 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-07 19:04:32,015 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-07 19:04:32,016 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-09-07 19:04:32,016 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-09-07 19:04:32,016 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-09-07 19:04:32,016 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-07 19:04:32,017 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-07 19:04:32,017 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-07 19:04:32,018 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-07 19:04:32,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-07 19:04:32,020 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-07 19:04:36,761 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-07 19:04:36,761 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-07 19:04:36,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 07:04:36 BoogieIcfgContainer [2019-09-07 19:04:36,766 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-07 19:04:36,766 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-07 19:04:36,767 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-07 19:04:36,770 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-07 19:04:36,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.09 07:04:29" (1/3) ... [2019-09-07 19:04:36,771 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25e7edda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 07:04:36, skipping insertion in model container [2019-09-07 19:04:36,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:04:31" (2/3) ... [2019-09-07 19:04:36,772 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25e7edda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 07:04:36, skipping insertion in model container [2019-09-07 19:04:36,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 07:04:36" (3/3) ... [2019-09-07 19:04:36,781 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label44.c [2019-09-07 19:04:36,793 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-07 19:04:36,802 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-07 19:04:36,820 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-07 19:04:36,868 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-07 19:04:36,868 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-07 19:04:36,868 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-07 19:04:36,869 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-07 19:04:36,869 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-07 19:04:36,869 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-07 19:04:36,869 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-07 19:04:36,869 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-07 19:04:36,869 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-07 19:04:36,911 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2019-09-07 19:04:36,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2019-09-07 19:04:36,921 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:04:36,922 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] [2019-09-07 19:04:36,924 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:04:36,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:04:36,931 INFO L82 PathProgramCache]: Analyzing trace with hash -1113474819, now seen corresponding path program 1 times [2019-09-07 19:04:36,933 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:04:36,933 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:04:36,989 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:04:36,990 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:04:36,990 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:04:37,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:04:37,379 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 19:04:37,382 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 19:04:37,382 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-07 19:04:37,386 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-07 19:04:37,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-07 19:04:37,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 19:04:37,403 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 3 states. [2019-09-07 19:04:42,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:04:42,400 INFO L93 Difference]: Finished difference Result 2443 states and 4697 transitions. [2019-09-07 19:04:42,400 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-07 19:04:42,402 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 56 [2019-09-07 19:04:42,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:04:42,434 INFO L225 Difference]: With dead ends: 2443 [2019-09-07 19:04:42,434 INFO L226 Difference]: Without dead ends: 1542 [2019-09-07 19:04:42,443 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 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 19:04:42,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1542 states. [2019-09-07 19:04:42,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1542 to 1542. [2019-09-07 19:04:42,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1542 states. [2019-09-07 19:04:42,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1542 states to 1542 states and 2702 transitions. [2019-09-07 19:04:42,593 INFO L78 Accepts]: Start accepts. Automaton has 1542 states and 2702 transitions. Word has length 56 [2019-09-07 19:04:42,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:04:42,593 INFO L475 AbstractCegarLoop]: Abstraction has 1542 states and 2702 transitions. [2019-09-07 19:04:42,594 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-07 19:04:42,594 INFO L276 IsEmpty]: Start isEmpty. Operand 1542 states and 2702 transitions. [2019-09-07 19:04:42,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2019-09-07 19:04:42,608 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:04:42,609 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:04:42,609 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:04:42,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:04:42,609 INFO L82 PathProgramCache]: Analyzing trace with hash 486407621, now seen corresponding path program 1 times [2019-09-07 19:04:42,610 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:04:42,610 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:04:42,611 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:04:42,611 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:04:42,611 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:04:42,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:04:42,849 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 43 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 19:04:42,849 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:04:42,850 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-07 19:04:42,869 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 19:04:42,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:04:42,934 INFO L256 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 8 conjunts are in the unsatisfiable core [2019-09-07 19:04:42,951 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:04:43,093 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (2)] Exception during sending of exit command (exit): Broken pipe [2019-09-07 19:04:43,106 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 19:04:43,107 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4] total 9 [2019-09-07 19:04:43,108 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 19:04:43,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 19:04:43,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-09-07 19:04:43,109 INFO L87 Difference]: Start difference. First operand 1542 states and 2702 transitions. Second operand 9 states. [2019-09-07 19:05:04,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:05:04,693 INFO L93 Difference]: Finished difference Result 11171 states and 20990 transitions. [2019-09-07 19:05:04,694 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2019-09-07 19:05:04,694 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 131 [2019-09-07 19:05:04,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:05:04,773 INFO L225 Difference]: With dead ends: 11171 [2019-09-07 19:05:04,773 INFO L226 Difference]: Without dead ends: 9635 [2019-09-07 19:05:04,784 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 400 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=309, Invalid=1097, Unknown=0, NotChecked=0, Total=1406 [2019-09-07 19:05:04,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9635 states. [2019-09-07 19:05:05,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9635 to 9532. [2019-09-07 19:05:05,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9532 states. [2019-09-07 19:05:05,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9532 states to 9532 states and 14124 transitions. [2019-09-07 19:05:05,151 INFO L78 Accepts]: Start accepts. Automaton has 9532 states and 14124 transitions. Word has length 131 [2019-09-07 19:05:05,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:05:05,154 INFO L475 AbstractCegarLoop]: Abstraction has 9532 states and 14124 transitions. [2019-09-07 19:05:05,155 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 19:05:05,155 INFO L276 IsEmpty]: Start isEmpty. Operand 9532 states and 14124 transitions. [2019-09-07 19:05:05,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2019-09-07 19:05:05,165 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:05:05,166 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:05:05,166 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:05:05,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:05:05,167 INFO L82 PathProgramCache]: Analyzing trace with hash -482936828, now seen corresponding path program 1 times [2019-09-07 19:05:05,167 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:05:05,167 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:05:05,169 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:05:05,170 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:05:05,170 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:05:05,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:05:05,425 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 19:05:05,427 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 19:05:05,430 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-07 19:05:05,431 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-07 19:05:05,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-07 19:05:05,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-07 19:05:05,432 INFO L87 Difference]: Start difference. First operand 9532 states and 14124 transitions. Second operand 5 states. [2019-09-07 19:05:12,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:05:12,245 INFO L93 Difference]: Finished difference Result 29042 states and 45586 transitions. [2019-09-07 19:05:12,246 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-07 19:05:12,254 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 166 [2019-09-07 19:05:12,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:05:12,386 INFO L225 Difference]: With dead ends: 29042 [2019-09-07 19:05:12,386 INFO L226 Difference]: Without dead ends: 19516 [2019-09-07 19:05:12,428 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 19:05:12,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19516 states. [2019-09-07 19:05:13,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19516 to 19378. [2019-09-07 19:05:13,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19378 states. [2019-09-07 19:05:13,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19378 states to 19378 states and 28259 transitions. [2019-09-07 19:05:13,755 INFO L78 Accepts]: Start accepts. Automaton has 19378 states and 28259 transitions. Word has length 166 [2019-09-07 19:05:13,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:05:13,757 INFO L475 AbstractCegarLoop]: Abstraction has 19378 states and 28259 transitions. [2019-09-07 19:05:13,757 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-07 19:05:13,757 INFO L276 IsEmpty]: Start isEmpty. Operand 19378 states and 28259 transitions. [2019-09-07 19:05:13,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 255 [2019-09-07 19:05:13,766 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:05:13,767 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:05:13,767 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:05:13,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:05:13,768 INFO L82 PathProgramCache]: Analyzing trace with hash 677744340, now seen corresponding path program 1 times [2019-09-07 19:05:13,768 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:05:13,768 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:05:13,769 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:05:13,769 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:05:13,769 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:05:13,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:05:14,208 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 19:05:14,208 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 19:05:14,208 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-07 19:05:14,209 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 19:05:14,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 19:05:14,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-07 19:05:14,210 INFO L87 Difference]: Start difference. First operand 19378 states and 28259 transitions. Second operand 6 states. [2019-09-07 19:05:20,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:05:20,075 INFO L93 Difference]: Finished difference Result 45309 states and 67842 transitions. [2019-09-07 19:05:20,076 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-07 19:05:20,076 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 254 [2019-09-07 19:05:20,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:05:20,187 INFO L225 Difference]: With dead ends: 45309 [2019-09-07 19:05:20,188 INFO L226 Difference]: Without dead ends: 25937 [2019-09-07 19:05:20,262 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 19:05:20,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25937 states. [2019-09-07 19:05:20,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25937 to 25843. [2019-09-07 19:05:20,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25843 states. [2019-09-07 19:05:21,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25843 states to 25843 states and 34727 transitions. [2019-09-07 19:05:21,055 INFO L78 Accepts]: Start accepts. Automaton has 25843 states and 34727 transitions. Word has length 254 [2019-09-07 19:05:21,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:05:21,056 INFO L475 AbstractCegarLoop]: Abstraction has 25843 states and 34727 transitions. [2019-09-07 19:05:21,056 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 19:05:21,056 INFO L276 IsEmpty]: Start isEmpty. Operand 25843 states and 34727 transitions. [2019-09-07 19:05:21,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2019-09-07 19:05:21,073 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:05:21,074 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, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 19:05:21,074 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:05:21,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:05:21,074 INFO L82 PathProgramCache]: Analyzing trace with hash 1514272971, now seen corresponding path program 1 times [2019-09-07 19:05:21,075 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:05:21,075 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:05:21,078 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:05:21,078 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:05:21,078 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:05:21,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:05:21,348 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 224 proven. 110 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2019-09-07 19:05:21,349 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:05:21,349 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 19:05:21,367 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 19:05:21,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:05:21,468 INFO L256 TraceCheckSpWp]: Trace formula consists of 616 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 19:05:21,486 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:05:21,642 INFO L134 CoverageAnalysis]: Checked inductivity of 407 backedges. 355 proven. 2 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2019-09-07 19:05:21,645 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 19:05:21,646 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 19:05:21,647 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 19:05:21,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 19:05:21,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 19:05:21,648 INFO L87 Difference]: Start difference. First operand 25843 states and 34727 transitions. Second operand 9 states. [2019-09-07 19:05:37,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:05:37,620 INFO L93 Difference]: Finished difference Result 60264 states and 89087 transitions. [2019-09-07 19:05:37,620 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2019-09-07 19:05:37,621 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 355 [2019-09-07 19:05:37,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:05:37,772 INFO L225 Difference]: With dead ends: 60264 [2019-09-07 19:05:37,772 INFO L226 Difference]: Without dead ends: 31081 [2019-09-07 19:05:37,829 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 364 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2019-09-07 19:05:37,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31081 states. [2019-09-07 19:05:38,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31081 to 30696. [2019-09-07 19:05:38,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30696 states. [2019-09-07 19:05:38,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30696 states to 30696 states and 41327 transitions. [2019-09-07 19:05:38,585 INFO L78 Accepts]: Start accepts. Automaton has 30696 states and 41327 transitions. Word has length 355 [2019-09-07 19:05:38,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:05:38,586 INFO L475 AbstractCegarLoop]: Abstraction has 30696 states and 41327 transitions. [2019-09-07 19:05:38,586 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 19:05:38,586 INFO L276 IsEmpty]: Start isEmpty. Operand 30696 states and 41327 transitions. [2019-09-07 19:05:38,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2019-09-07 19:05:38,613 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:05:38,613 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2019-09-07 19:05:38,614 INFO L418 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:05:38,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:05:38,614 INFO L82 PathProgramCache]: Analyzing trace with hash -433695330, now seen corresponding path program 1 times [2019-09-07 19:05:38,614 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:05:38,614 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:05:38,615 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:05:38,616 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:05:38,616 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:05:38,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:05:39,230 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 263 proven. 110 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2019-09-07 19:05:39,230 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:05:39,230 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) [2019-09-07 19:05:39,245 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 19:05:39,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:05:39,356 INFO L256 TraceCheckSpWp]: Trace formula consists of 686 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 19:05:39,363 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:05:39,565 INFO L134 CoverageAnalysis]: Checked inductivity of 481 backedges. 429 proven. 2 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2019-09-07 19:05:39,580 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 19:05:39,581 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 19:05:39,585 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 19:05:39,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 19:05:39,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 19:05:39,586 INFO L87 Difference]: Start difference. First operand 30696 states and 41327 transitions. Second operand 9 states. [2019-09-07 19:05:50,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:05:50,479 INFO L93 Difference]: Finished difference Result 115234 states and 193235 transitions. [2019-09-07 19:05:50,480 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-09-07 19:05:50,480 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 428 [2019-09-07 19:05:50,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:05:52,443 INFO L225 Difference]: With dead ends: 115234 [2019-09-07 19:05:52,445 INFO L226 Difference]: Without dead ends: 84548 [2019-09-07 19:05:52,514 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 447 GetRequests, 433 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2019-09-07 19:05:52,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84548 states. [2019-09-07 19:05:54,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84548 to 81900. [2019-09-07 19:05:54,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81900 states. [2019-09-07 19:05:54,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81900 states to 81900 states and 120007 transitions. [2019-09-07 19:05:54,335 INFO L78 Accepts]: Start accepts. Automaton has 81900 states and 120007 transitions. Word has length 428 [2019-09-07 19:05:54,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:05:54,335 INFO L475 AbstractCegarLoop]: Abstraction has 81900 states and 120007 transitions. [2019-09-07 19:05:54,336 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 19:05:54,336 INFO L276 IsEmpty]: Start isEmpty. Operand 81900 states and 120007 transitions. [2019-09-07 19:05:54,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 479 [2019-09-07 19:05:54,386 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:05:54,386 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2019-09-07 19:05:54,387 INFO L418 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:05:54,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:05:54,387 INFO L82 PathProgramCache]: Analyzing trace with hash 63966362, now seen corresponding path program 1 times [2019-09-07 19:05:54,387 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:05:54,387 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:05:54,388 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:05:54,388 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:05:54,388 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:05:54,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:05:54,988 INFO L134 CoverageAnalysis]: Checked inductivity of 475 backedges. 147 proven. 216 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2019-09-07 19:05:54,988 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:05:54,988 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 19:05:55,001 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:05:55,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:05:55,123 INFO L256 TraceCheckSpWp]: Trace formula consists of 741 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-07 19:05:55,128 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:05:55,242 INFO L134 CoverageAnalysis]: Checked inductivity of 475 backedges. 271 proven. 0 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (5)] Exception during sending of exit command (exit): Broken pipe [2019-09-07 19:05:55,246 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 19:05:55,246 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2019-09-07 19:05:55,247 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 19:05:55,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 19:05:55,248 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 19:05:55,248 INFO L87 Difference]: Start difference. First operand 81900 states and 120007 transitions. Second operand 9 states. [2019-09-07 19:06:05,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:06:05,877 INFO L93 Difference]: Finished difference Result 202993 states and 309916 transitions. [2019-09-07 19:06:05,878 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-09-07 19:06:05,878 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 478 [2019-09-07 19:06:05,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:06:06,493 INFO L225 Difference]: With dead ends: 202993 [2019-09-07 19:06:06,493 INFO L226 Difference]: Without dead ends: 121115 [2019-09-07 19:06:06,659 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 498 GetRequests, 484 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2019-09-07 19:06:06,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121115 states. [2019-09-07 19:06:09,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121115 to 120703. [2019-09-07 19:06:09,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120703 states. [2019-09-07 19:06:09,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120703 states to 120703 states and 170304 transitions. [2019-09-07 19:06:09,640 INFO L78 Accepts]: Start accepts. Automaton has 120703 states and 170304 transitions. Word has length 478 [2019-09-07 19:06:09,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:06:09,641 INFO L475 AbstractCegarLoop]: Abstraction has 120703 states and 170304 transitions. [2019-09-07 19:06:09,641 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 19:06:09,641 INFO L276 IsEmpty]: Start isEmpty. Operand 120703 states and 170304 transitions. [2019-09-07 19:06:09,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 483 [2019-09-07 19:06:09,684 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:06:09,685 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:06:09,686 INFO L418 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:06:09,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:06:09,686 INFO L82 PathProgramCache]: Analyzing trace with hash -63096912, now seen corresponding path program 1 times [2019-09-07 19:06:09,687 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:06:09,687 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:06:09,688 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:06:09,688 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:06:09,688 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:06:09,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:06:10,185 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 232 proven. 83 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2019-09-07 19:06:10,185 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:06:10,186 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 19:06:10,204 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 19:06:10,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:06:10,327 INFO L256 TraceCheckSpWp]: Trace formula consists of 740 conjuncts, 13 conjunts are in the unsatisfiable core [2019-09-07 19:06:10,334 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:06:12,608 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:06:12,608 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:06:13,856 WARN L188 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 24 DAG size of output: 22 [2019-09-07 19:06:13,887 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:06:15,945 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 11 proven. 142 refuted. 0 times theorem prover too weak. 305 trivial. 0 not checked. [2019-09-07 19:06:15,949 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 19:06:15,949 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 9 [2019-09-07 19:06:15,950 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 19:06:15,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 19:06:15,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=54, Unknown=1, NotChecked=0, Total=72 [2019-09-07 19:06:15,951 INFO L87 Difference]: Start difference. First operand 120703 states and 170304 transitions. Second operand 9 states. [2019-09-07 19:08:43,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:08:43,857 INFO L93 Difference]: Finished difference Result 478542 states and 767745 transitions. [2019-09-07 19:08:43,857 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2019-09-07 19:08:43,857 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 482 [2019-09-07 19:08:43,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:08:50,461 INFO L225 Difference]: With dead ends: 478542 [2019-09-07 19:08:50,462 INFO L226 Difference]: Without dead ends: 358624 [2019-09-07 19:08:50,711 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 554 GetRequests, 514 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 473 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=357, Invalid=1281, Unknown=2, NotChecked=0, Total=1640 [2019-09-07 19:08:50,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358624 states. [2019-09-07 19:08:55,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358624 to 335416. [2019-09-07 19:08:55,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335416 states. [2019-09-07 19:09:02,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335416 states to 335416 states and 469144 transitions. [2019-09-07 19:09:02,565 INFO L78 Accepts]: Start accepts. Automaton has 335416 states and 469144 transitions. Word has length 482 [2019-09-07 19:09:02,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:09:02,566 INFO L475 AbstractCegarLoop]: Abstraction has 335416 states and 469144 transitions. [2019-09-07 19:09:02,566 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 19:09:02,566 INFO L276 IsEmpty]: Start isEmpty. Operand 335416 states and 469144 transitions. [2019-09-07 19:09:02,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 580 [2019-09-07 19:09:02,620 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:09:02,621 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 19:09:02,621 INFO L418 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:09:02,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:09:02,622 INFO L82 PathProgramCache]: Analyzing trace with hash 302872504, now seen corresponding path program 1 times [2019-09-07 19:09:02,622 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:09:02,622 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:09:02,622 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:09:02,623 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:09:02,623 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:09:02,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:09:03,273 INFO L134 CoverageAnalysis]: Checked inductivity of 771 backedges. 593 proven. 92 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2019-09-07 19:09:03,273 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:09:03,273 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) [2019-09-07 19:09:03,288 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 19:09:03,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:09:03,425 INFO L256 TraceCheckSpWp]: Trace formula consists of 885 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 19:09:03,432 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:09:03,621 INFO L134 CoverageAnalysis]: Checked inductivity of 771 backedges. 525 proven. 2 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2019-09-07 19:09:03,624 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 19:09:03,625 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 19:09:03,626 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 19:09:03,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 19:09:03,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 19:09:03,626 INFO L87 Difference]: Start difference. First operand 335416 states and 469144 transitions. Second operand 9 states. [2019-09-07 19:09:28,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:09:28,072 INFO L93 Difference]: Finished difference Result 776972 states and 1175700 transitions. [2019-09-07 19:09:28,073 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-09-07 19:09:28,073 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 579 [2019-09-07 19:09:28,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:09:30,122 INFO L225 Difference]: With dead ends: 776972 [2019-09-07 19:09:30,122 INFO L226 Difference]: Without dead ends: 442349 [2019-09-07 19:09:30,573 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 600 GetRequests, 586 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2019-09-07 19:09:30,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442349 states. [2019-09-07 19:09:38,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442349 to 423667. [2019-09-07 19:09:38,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 423667 states. [2019-09-07 19:09:52,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423667 states to 423667 states and 576911 transitions. [2019-09-07 19:09:52,560 INFO L78 Accepts]: Start accepts. Automaton has 423667 states and 576911 transitions. Word has length 579 [2019-09-07 19:09:52,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:09:52,561 INFO L475 AbstractCegarLoop]: Abstraction has 423667 states and 576911 transitions. [2019-09-07 19:09:52,561 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 19:09:52,561 INFO L276 IsEmpty]: Start isEmpty. Operand 423667 states and 576911 transitions. [2019-09-07 19:09:52,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 632 [2019-09-07 19:09:52,667 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:09:52,668 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:09:52,668 INFO L418 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:09:52,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:09:52,669 INFO L82 PathProgramCache]: Analyzing trace with hash 1937113187, now seen corresponding path program 1 times [2019-09-07 19:09:52,669 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:09:52,669 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:09:52,670 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:09:52,670 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:09:52,670 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:09:52,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:09:53,311 INFO L134 CoverageAnalysis]: Checked inductivity of 599 backedges. 152 proven. 362 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2019-09-07 19:09:53,311 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:09:53,311 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) [2019-09-07 19:09:53,326 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 19:09:54,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:09:54,727 INFO L256 TraceCheckSpWp]: Trace formula consists of 889 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 19:09:54,738 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:09:54,924 INFO L134 CoverageAnalysis]: Checked inductivity of 599 backedges. 547 proven. 2 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2019-09-07 19:09:54,927 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 19:09:54,928 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 19:09:54,930 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 19:09:54,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 19:09:54,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 19:09:54,931 INFO L87 Difference]: Start difference. First operand 423667 states and 576911 transitions. Second operand 9 states. [2019-09-07 19:10:12,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:10:12,840 INFO L93 Difference]: Finished difference Result 855558 states and 1166607 transitions. [2019-09-07 19:10:12,840 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-09-07 19:10:12,840 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 631 [2019-09-07 19:10:12,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:10:14,364 INFO L225 Difference]: With dead ends: 855558 [2019-09-07 19:10:14,365 INFO L226 Difference]: Without dead ends: 427958 [2019-09-07 19:10:15,957 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 653 GetRequests, 639 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 19:10:16,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427958 states. [2019-09-07 19:10:28,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427958 to 421571. [2019-09-07 19:10:28,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 421571 states. [2019-09-07 19:10:30,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421571 states to 421571 states and 521463 transitions. [2019-09-07 19:10:30,071 INFO L78 Accepts]: Start accepts. Automaton has 421571 states and 521463 transitions. Word has length 631 [2019-09-07 19:10:30,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:10:30,072 INFO L475 AbstractCegarLoop]: Abstraction has 421571 states and 521463 transitions. [2019-09-07 19:10:30,072 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 19:10:30,072 INFO L276 IsEmpty]: Start isEmpty. Operand 421571 states and 521463 transitions. [2019-09-07 19:10:30,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 647 [2019-09-07 19:10:30,114 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:10:30,115 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:10:30,115 INFO L418 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:10:30,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:10:30,116 INFO L82 PathProgramCache]: Analyzing trace with hash 1435256968, now seen corresponding path program 1 times [2019-09-07 19:10:30,116 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:10:30,116 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:10:30,116 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:10:30,117 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:10:30,117 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:10:36,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:10:36,998 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 422 proven. 311 refuted. 0 times theorem prover too weak. 377 trivial. 0 not checked. [2019-09-07 19:10:36,998 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:10:36,998 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-07 19:10:37,023 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 19:10:37,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:10:37,177 INFO L256 TraceCheckSpWp]: Trace formula consists of 1000 conjuncts, 16 conjunts are in the unsatisfiable core [2019-09-07 19:10:37,186 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:10:37,228 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-07 19:10:37,574 INFO L134 CoverageAnalysis]: Checked inductivity of 1110 backedges. 437 proven. 0 refuted. 0 times theorem prover too weak. 673 trivial. 0 not checked. [2019-09-07 19:10:37,578 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 19:10:37,579 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2019-09-07 19:10:37,580 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-09-07 19:10:37,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-09-07 19:10:37,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2019-09-07 19:10:37,580 INFO L87 Difference]: Start difference. First operand 421571 states and 521463 transitions. Second operand 10 states. [2019-09-07 19:11:05,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:11:05,456 INFO L93 Difference]: Finished difference Result 933772 states and 1137608 transitions. [2019-09-07 19:11:05,456 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2019-09-07 19:11:05,456 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 646 [2019-09-07 19:11:05,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:11:06,774 INFO L225 Difference]: With dead ends: 933772 [2019-09-07 19:11:06,775 INFO L226 Difference]: Without dead ends: 512974 [2019-09-07 19:11:08,429 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 723 GetRequests, 680 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 560 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=298, Invalid=1682, Unknown=0, NotChecked=0, Total=1980 [2019-09-07 19:11:08,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512974 states. [2019-09-07 19:11:23,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512974 to 504961. [2019-09-07 19:11:23,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 504961 states. [2019-09-07 19:11:25,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504961 states to 504961 states and 590555 transitions. [2019-09-07 19:11:25,714 INFO L78 Accepts]: Start accepts. Automaton has 504961 states and 590555 transitions. Word has length 646 [2019-09-07 19:11:25,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:11:25,715 INFO L475 AbstractCegarLoop]: Abstraction has 504961 states and 590555 transitions. [2019-09-07 19:11:25,715 INFO L476 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-09-07 19:11:25,715 INFO L276 IsEmpty]: Start isEmpty. Operand 504961 states and 590555 transitions. [2019-09-07 19:11:25,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 673 [2019-09-07 19:11:25,735 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:11:25,736 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 19:11:25,736 INFO L418 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:11:25,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:11:25,736 INFO L82 PathProgramCache]: Analyzing trace with hash -1083602841, now seen corresponding path program 1 times [2019-09-07 19:11:25,736 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:11:25,737 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:11:25,737 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:11:25,737 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:11:25,738 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:11:25,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:11:26,331 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 396 proven. 148 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2019-09-07 19:11:26,331 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:11:26,331 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 19:11:32,608 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:11:32,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:11:32,765 INFO L256 TraceCheckSpWp]: Trace formula consists of 973 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 19:11:32,774 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:11:32,787 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:11:32,788 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:11:32,788 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:11:32,789 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:11:32,789 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:11:32,790 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:11:32,791 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:11:32,791 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:11:32,792 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:11:32,793 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:11:32,793 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:11:32,793 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:11:32,794 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:11:32,795 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:11:32,795 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:11:32,796 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:11:32,797 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:11:32,797 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:11:32,798 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:11:32,798 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:11:32,799 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:11:32,799 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:11:32,800 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:11:33,562 INFO L134 CoverageAnalysis]: Checked inductivity of 813 backedges. 205 proven. 0 refuted. 0 times theorem prover too weak. 608 trivial. 0 not checked. [2019-09-07 19:11:33,575 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 19:11:33,575 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2019-09-07 19:11:33,576 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-07 19:11:33,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-07 19:11:33,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-09-07 19:11:33,577 INFO L87 Difference]: Start difference. First operand 504961 states and 590555 transitions. Second operand 8 states. [2019-09-07 19:14:01,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:14:01,596 INFO L93 Difference]: Finished difference Result 1279234 states and 1493873 transitions. [2019-09-07 19:14:01,596 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2019-09-07 19:14:01,596 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 672 [2019-09-07 19:14:01,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:14:03,645 INFO L225 Difference]: With dead ends: 1279234 [2019-09-07 19:14:03,645 INFO L226 Difference]: Without dead ends: 775046 [2019-09-07 19:14:05,000 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 709 GetRequests, 690 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2019-09-07 19:14:05,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 775046 states. [2019-09-07 19:14:23,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 775046 to 744703. [2019-09-07 19:14:23,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744703 states. [2019-09-07 19:14:26,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744703 states to 744703 states and 859500 transitions. [2019-09-07 19:14:26,180 INFO L78 Accepts]: Start accepts. Automaton has 744703 states and 859500 transitions. Word has length 672 [2019-09-07 19:14:26,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:14:26,181 INFO L475 AbstractCegarLoop]: Abstraction has 744703 states and 859500 transitions. [2019-09-07 19:14:26,181 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-07 19:14:26,182 INFO L276 IsEmpty]: Start isEmpty. Operand 744703 states and 859500 transitions. [2019-09-07 19:14:26,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 794 [2019-09-07 19:14:26,250 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:14:26,250 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, 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, 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, 2, 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] [2019-09-07 19:14:26,251 INFO L418 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:14:26,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:14:26,251 INFO L82 PathProgramCache]: Analyzing trace with hash 686944882, now seen corresponding path program 1 times [2019-09-07 19:14:26,251 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:14:26,252 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:14:26,252 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:14:26,252 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:14:26,253 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:14:26,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:14:28,847 INFO L134 CoverageAnalysis]: Checked inductivity of 1755 backedges. 542 proven. 287 refuted. 0 times theorem prover too weak. 926 trivial. 0 not checked. [2019-09-07 19:14:28,847 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:14:28,848 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-07 19:14:28,869 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 19:14:29,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:14:29,064 INFO L256 TraceCheckSpWp]: Trace formula consists of 1195 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 19:14:29,072 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:14:37,774 INFO L134 CoverageAnalysis]: Checked inductivity of 1755 backedges. 1249 proven. 2 refuted. 0 times theorem prover too weak. 504 trivial. 0 not checked. [2019-09-07 19:14:37,778 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 19:14:37,778 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 19:14:37,780 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 19:14:37,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 19:14:37,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 19:14:37,780 INFO L87 Difference]: Start difference. First operand 744703 states and 859500 transitions. Second operand 9 states. [2019-09-07 19:15:06,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:15:06,438 INFO L93 Difference]: Finished difference Result 1530821 states and 1803919 transitions. [2019-09-07 19:15:06,438 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-09-07 19:15:06,438 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 793 [2019-09-07 19:15:06,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:15:09,305 INFO L225 Difference]: With dead ends: 1530821 [2019-09-07 19:15:09,305 INFO L226 Difference]: Without dead ends: 786891 [2019-09-07 19:15:10,021 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 818 GetRequests, 801 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=105, Invalid=237, Unknown=0, NotChecked=0, Total=342 [2019-09-07 19:15:10,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 786891 states. [2019-09-07 19:15:22,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 786891 to 782049. [2019-09-07 19:15:22,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 782049 states. [2019-09-07 19:15:41,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 782049 states to 782049 states and 917332 transitions. [2019-09-07 19:15:41,840 INFO L78 Accepts]: Start accepts. Automaton has 782049 states and 917332 transitions. Word has length 793 [2019-09-07 19:15:41,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:15:41,841 INFO L475 AbstractCegarLoop]: Abstraction has 782049 states and 917332 transitions. [2019-09-07 19:15:41,841 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 19:15:41,841 INFO L276 IsEmpty]: Start isEmpty. Operand 782049 states and 917332 transitions. [2019-09-07 19:15:41,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 838 [2019-09-07 19:15:41,892 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:15:41,893 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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 19:15:41,893 INFO L418 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:15:41,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:15:41,894 INFO L82 PathProgramCache]: Analyzing trace with hash 725031676, now seen corresponding path program 1 times [2019-09-07 19:15:41,894 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:15:41,894 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:15:41,895 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:15:41,895 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:15:41,895 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:15:41,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:15:44,834 INFO L134 CoverageAnalysis]: Checked inductivity of 1809 backedges. 512 proven. 596 refuted. 0 times theorem prover too weak. 701 trivial. 0 not checked. [2019-09-07 19:15:44,834 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:15:44,834 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 19:15:44,855 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:15:45,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:15:45,056 INFO L256 TraceCheckSpWp]: Trace formula consists of 1237 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 19:15:45,062 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:15:45,096 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:15:45,572 INFO L134 CoverageAnalysis]: Checked inductivity of 1809 backedges. 1156 proven. 2 refuted. 0 times theorem prover too weak. 651 trivial. 0 not checked. [2019-09-07 19:15:45,579 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 19:15:45,580 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5] total 12 [2019-09-07 19:15:45,581 INFO L454 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-09-07 19:15:45,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-09-07 19:15:45,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2019-09-07 19:15:45,581 INFO L87 Difference]: Start difference. First operand 782049 states and 917332 transitions. Second operand 12 states.