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/Problem13_label02.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-07 19:15:34,972 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-07 19:15:34,974 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-07 19:15:34,985 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-07 19:15:34,997 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-07 19:15:34,998 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-07 19:15:34,999 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-07 19:15:35,000 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-07 19:15:35,001 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-07 19:15:35,002 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-07 19:15:35,003 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-07 19:15:35,006 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-07 19:15:35,007 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-07 19:15:35,008 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-07 19:15:35,009 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-07 19:15:35,010 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-07 19:15:35,013 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-07 19:15:35,021 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-07 19:15:35,022 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-07 19:15:35,023 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-07 19:15:35,024 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 19:15:35,039 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-07 19:15:35,039 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-07 19:15:35,041 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-07 19:15:35,041 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-07 19:15:35,041 INFO L138 SettingsManager]: * Use SBE=true [2019-09-07 19:15:35,041 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-07 19:15:35,042 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-07 19:15:35,042 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-07 19:15:35,042 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-07 19:15:35,042 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-07 19:15:35,042 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-07 19:15:35,043 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-07 19:15:35,043 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-07 19:15:35,043 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-07 19:15:35,043 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-07 19:15:35,043 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-07 19:15:35,043 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-07 19:15:35,044 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-07 19:15:35,044 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-07 19:15:35,044 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-07 19:15:35,044 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-07 19:15:35,045 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-07 19:15:35,045 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-07 19:15:35,045 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-07 19:15:35,045 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-07 19:15:35,045 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-07 19:15:35,046 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-07 19:15:35,046 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-07 19:15:35,046 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-07 19:15:35,074 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-07 19:15:35,085 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-07 19:15:35,089 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-07 19:15:35,090 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-07 19:15:35,090 INFO L275 PluginConnector]: CDTParser initialized [2019-09-07 19:15:35,091 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label02.c [2019-09-07 19:15:35,150 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/360815d17/ff953737219048e28cf0525d425413df/FLAG3191bffdc [2019-09-07 19:15:35,938 INFO L306 CDTParser]: Found 1 translation units. [2019-09-07 19:15:35,939 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label02.c [2019-09-07 19:15:35,975 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/360815d17/ff953737219048e28cf0525d425413df/FLAG3191bffdc [2019-09-07 19:15:36,490 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/360815d17/ff953737219048e28cf0525d425413df [2019-09-07 19:15:36,501 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-07 19:15:36,502 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-07 19:15:36,507 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-07 19:15:36,507 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-07 19:15:36,511 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-07 19:15:36,512 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 07:15:36" (1/1) ... [2019-09-07 19:15:36,515 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b05ff34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:15:36, skipping insertion in model container [2019-09-07 19:15:36,516 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 07:15:36" (1/1) ... [2019-09-07 19:15:36,523 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-07 19:15:36,687 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-07 19:15:38,275 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 19:15:38,285 INFO L188 MainTranslator]: Completed pre-run [2019-09-07 19:15:39,005 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 19:15:39,036 INFO L192 MainTranslator]: Completed translation [2019-09-07 19:15:39,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:15:39 WrapperNode [2019-09-07 19:15:39,037 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-07 19:15:39,038 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-07 19:15:39,038 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-07 19:15:39,038 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-07 19:15:39,056 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:15:39" (1/1) ... [2019-09-07 19:15:39,056 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:15:39" (1/1) ... [2019-09-07 19:15:39,133 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:15:39" (1/1) ... [2019-09-07 19:15:39,134 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:15:39" (1/1) ... [2019-09-07 19:15:39,273 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:15:39" (1/1) ... [2019-09-07 19:15:39,313 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:15:39" (1/1) ... [2019-09-07 19:15:39,373 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:15:39" (1/1) ... [2019-09-07 19:15:39,434 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-07 19:15:39,435 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-07 19:15:39,435 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-07 19:15:39,435 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-07 19:15:39,436 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:15:39" (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 19:15:39,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-07 19:15:39,511 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-07 19:15:39,512 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-07 19:15:39,512 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-09-07 19:15:39,513 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-09-07 19:15:39,513 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-09-07 19:15:39,513 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-07 19:15:39,513 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-07 19:15:39,514 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-09-07 19:15:39,514 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-09-07 19:15:39,514 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-09-07 19:15:39,515 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-07 19:15:39,515 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-07 19:15:39,515 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-07 19:15:39,516 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-07 19:15:39,516 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-07 19:15:39,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-07 19:15:46,269 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-07 19:15:46,272 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-07 19:15:46,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 07:15:46 BoogieIcfgContainer [2019-09-07 19:15:46,275 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-07 19:15:46,276 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-07 19:15:46,276 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-07 19:15:46,279 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-07 19:15:46,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.09 07:15:36" (1/3) ... [2019-09-07 19:15:46,281 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27bc82c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 07:15:46, skipping insertion in model container [2019-09-07 19:15:46,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 07:15:39" (2/3) ... [2019-09-07 19:15:46,282 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27bc82c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 07:15:46, skipping insertion in model container [2019-09-07 19:15:46,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 07:15:46" (3/3) ... [2019-09-07 19:15:46,289 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem13_label02.c [2019-09-07 19:15:46,303 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-07 19:15:46,315 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-07 19:15:46,333 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-07 19:15:46,383 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-07 19:15:46,383 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-07 19:15:46,383 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-07 19:15:46,384 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-07 19:15:46,384 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-07 19:15:46,384 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-07 19:15:46,384 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-07 19:15:46,384 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-07 19:15:46,384 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-07 19:15:46,431 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states. [2019-09-07 19:15:46,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-09-07 19:15:46,438 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:15:46,439 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] [2019-09-07 19:15:46,441 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:15:46,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:15:46,447 INFO L82 PathProgramCache]: Analyzing trace with hash 2063873488, now seen corresponding path program 1 times [2019-09-07 19:15:46,449 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:15:46,449 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:15:46,503 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:15:46,503 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:15:46,503 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:15:46,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:15:46,837 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 19:15:46,840 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 19:15:46,841 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-07 19:15:46,846 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-07 19:15:46,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-07 19:15:46,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 19:15:46,864 INFO L87 Difference]: Start difference. First operand 1119 states. Second operand 4 states. [2019-09-07 19:15:57,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:15:57,899 INFO L93 Difference]: Finished difference Result 4101 states and 7665 transitions. [2019-09-07 19:15:57,900 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-07 19:15:57,902 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2019-09-07 19:15:57,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:15:57,940 INFO L225 Difference]: With dead ends: 4101 [2019-09-07 19:15:57,940 INFO L226 Difference]: Without dead ends: 2901 [2019-09-07 19:15:57,951 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 19:15:57,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2901 states. [2019-09-07 19:15:58,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2901 to 2771. [2019-09-07 19:15:58,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2771 states. [2019-09-07 19:15:58,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2771 states to 2771 states and 4860 transitions. [2019-09-07 19:15:58,119 INFO L78 Accepts]: Start accepts. Automaton has 2771 states and 4860 transitions. Word has length 45 [2019-09-07 19:15:58,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:15:58,120 INFO L475 AbstractCegarLoop]: Abstraction has 2771 states and 4860 transitions. [2019-09-07 19:15:58,120 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-07 19:15:58,120 INFO L276 IsEmpty]: Start isEmpty. Operand 2771 states and 4860 transitions. [2019-09-07 19:15:58,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2019-09-07 19:15:58,134 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:15:58,134 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:15:58,135 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:15:58,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:15:58,136 INFO L82 PathProgramCache]: Analyzing trace with hash 648999256, now seen corresponding path program 1 times [2019-09-07 19:15:58,136 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:15:58,136 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:15:58,137 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:15:58,138 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:15:58,138 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:15:58,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:15:58,407 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 19:15:58,407 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 19:15:58,407 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-07 19:15:58,409 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 19:15:58,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 19:15:58,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-07 19:15:58,410 INFO L87 Difference]: Start difference. First operand 2771 states and 4860 transitions. Second operand 6 states. [2019-09-07 19:16:06,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:16:06,391 INFO L93 Difference]: Finished difference Result 8111 states and 14509 transitions. [2019-09-07 19:16:06,392 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-07 19:16:06,392 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 115 [2019-09-07 19:16:06,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:16:06,429 INFO L225 Difference]: With dead ends: 8111 [2019-09-07 19:16:06,430 INFO L226 Difference]: Without dead ends: 5346 [2019-09-07 19:16:06,440 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 19:16:06,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5346 states. [2019-09-07 19:16:06,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5346 to 5286. [2019-09-07 19:16:06,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5286 states. [2019-09-07 19:16:06,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5286 states to 5286 states and 9118 transitions. [2019-09-07 19:16:06,622 INFO L78 Accepts]: Start accepts. Automaton has 5286 states and 9118 transitions. Word has length 115 [2019-09-07 19:16:06,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:16:06,624 INFO L475 AbstractCegarLoop]: Abstraction has 5286 states and 9118 transitions. [2019-09-07 19:16:06,624 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 19:16:06,624 INFO L276 IsEmpty]: Start isEmpty. Operand 5286 states and 9118 transitions. [2019-09-07 19:16:06,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2019-09-07 19:16:06,629 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:16:06,629 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:16:06,629 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:16:06,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:16:06,630 INFO L82 PathProgramCache]: Analyzing trace with hash -1423326351, now seen corresponding path program 1 times [2019-09-07 19:16:06,630 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:16:06,630 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:16:06,632 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:16:06,633 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:16:06,633 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:16:06,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:16:06,840 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 19:16:06,841 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 19:16:06,841 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-07 19:16:06,843 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 19:16:06,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 19:16:06,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-07 19:16:06,844 INFO L87 Difference]: Start difference. First operand 5286 states and 9118 transitions. Second operand 6 states. [2019-09-07 19:16:14,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:16:14,637 INFO L93 Difference]: Finished difference Result 13199 states and 23040 transitions. [2019-09-07 19:16:14,641 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-07 19:16:14,642 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 118 [2019-09-07 19:16:14,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:16:14,687 INFO L225 Difference]: With dead ends: 13199 [2019-09-07 19:16:14,690 INFO L226 Difference]: Without dead ends: 7919 [2019-09-07 19:16:14,709 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 19:16:14,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7919 states. [2019-09-07 19:16:14,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7919 to 7853. [2019-09-07 19:16:14,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7853 states. [2019-09-07 19:16:14,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7853 states to 7853 states and 12900 transitions. [2019-09-07 19:16:14,964 INFO L78 Accepts]: Start accepts. Automaton has 7853 states and 12900 transitions. Word has length 118 [2019-09-07 19:16:14,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:16:14,968 INFO L475 AbstractCegarLoop]: Abstraction has 7853 states and 12900 transitions. [2019-09-07 19:16:14,968 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 19:16:14,968 INFO L276 IsEmpty]: Start isEmpty. Operand 7853 states and 12900 transitions. [2019-09-07 19:16:14,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2019-09-07 19:16:14,976 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:16:14,976 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:16:14,977 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:16:14,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:16:14,977 INFO L82 PathProgramCache]: Analyzing trace with hash 944737797, now seen corresponding path program 1 times [2019-09-07 19:16:14,977 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:16:14,977 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:16:14,978 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:16:14,979 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:16:14,979 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:16:15,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:16:15,146 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 19:16:15,147 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 19:16:15,147 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-07 19:16:15,148 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-07 19:16:15,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-07 19:16:15,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-07 19:16:15,149 INFO L87 Difference]: Start difference. First operand 7853 states and 12900 transitions. Second operand 5 states. [2019-09-07 19:16:23,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:16:23,512 INFO L93 Difference]: Finished difference Result 23885 states and 42022 transitions. [2019-09-07 19:16:23,513 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-07 19:16:23,513 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2019-09-07 19:16:23,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:16:23,581 INFO L225 Difference]: With dead ends: 23885 [2019-09-07 19:16:23,581 INFO L226 Difference]: Without dead ends: 16038 [2019-09-07 19:16:23,606 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 19:16:23,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16038 states. [2019-09-07 19:16:23,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16038 to 15790. [2019-09-07 19:16:23,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15790 states. [2019-09-07 19:16:24,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15790 states to 15790 states and 24782 transitions. [2019-09-07 19:16:24,028 INFO L78 Accepts]: Start accepts. Automaton has 15790 states and 24782 transitions. Word has length 128 [2019-09-07 19:16:24,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:16:24,030 INFO L475 AbstractCegarLoop]: Abstraction has 15790 states and 24782 transitions. [2019-09-07 19:16:24,030 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-07 19:16:24,030 INFO L276 IsEmpty]: Start isEmpty. Operand 15790 states and 24782 transitions. [2019-09-07 19:16:24,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2019-09-07 19:16:24,033 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:16:24,033 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 19:16:24,033 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:16:24,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:16:24,034 INFO L82 PathProgramCache]: Analyzing trace with hash -537370007, now seen corresponding path program 1 times [2019-09-07 19:16:24,034 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:16:24,034 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:16:24,035 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:16:24,035 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:16:24,035 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:16:24,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:16:24,207 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 22 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 19:16:24,207 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:16:24,207 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 19:16:24,231 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:16:24,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:16:24,312 INFO L256 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 8 conjunts are in the unsatisfiable core [2019-09-07 19:16:24,330 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:16:24,441 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-07 19:16:24,447 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 19:16:24,447 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 4] total 9 [2019-09-07 19:16:24,448 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 19:16:24,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 19:16:24,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-09-07 19:16:24,449 INFO L87 Difference]: Start difference. First operand 15790 states and 24782 transitions. Second operand 9 states. [2019-09-07 19:16:48,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:16:48,197 INFO L93 Difference]: Finished difference Result 65927 states and 126099 transitions. [2019-09-07 19:16:48,198 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2019-09-07 19:16:48,198 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 145 [2019-09-07 19:16:48,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:16:48,631 INFO L225 Difference]: With dead ends: 65927 [2019-09-07 19:16:48,632 INFO L226 Difference]: Without dead ends: 50143 [2019-09-07 19:16:48,816 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 145 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 414 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=309, Invalid=1097, Unknown=0, NotChecked=0, Total=1406 [2019-09-07 19:16:48,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50143 states. [2019-09-07 19:16:50,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50143 to 49765. [2019-09-07 19:16:50,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49765 states. [2019-09-07 19:16:50,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49765 states to 49765 states and 75853 transitions. [2019-09-07 19:16:50,708 INFO L78 Accepts]: Start accepts. Automaton has 49765 states and 75853 transitions. Word has length 145 [2019-09-07 19:16:50,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:16:50,709 INFO L475 AbstractCegarLoop]: Abstraction has 49765 states and 75853 transitions. [2019-09-07 19:16:50,709 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 19:16:50,709 INFO L276 IsEmpty]: Start isEmpty. Operand 49765 states and 75853 transitions. [2019-09-07 19:16:50,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2019-09-07 19:16:50,718 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:16:50,719 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 19:16:50,719 INFO L418 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:16:50,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:16:50,720 INFO L82 PathProgramCache]: Analyzing trace with hash 774352278, now seen corresponding path program 1 times [2019-09-07 19:16:50,720 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:16:50,720 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:16:50,721 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:16:50,721 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:16:50,722 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:16:50,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:16:52,109 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 76 proven. 2 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2019-09-07 19:16:52,109 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:16:52,109 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 19:16:52,135 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 19:16:52,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:16:52,217 INFO L256 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 3 conjunts are in the unsatisfiable core [2019-09-07 19:16:52,235 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:16:52,306 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 118 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2019-09-07 19:16:52,313 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 19:16:52,314 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2019-09-07 19:16:52,315 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-07 19:16:52,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-07 19:16:52,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 19:16:52,317 INFO L87 Difference]: Start difference. First operand 49765 states and 75853 transitions. Second operand 4 states. [2019-09-07 19:17:02,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:17:02,199 INFO L93 Difference]: Finished difference Result 125543 states and 202199 transitions. [2019-09-07 19:17:02,200 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-07 19:17:02,200 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 248 [2019-09-07 19:17:02,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:17:02,608 INFO L225 Difference]: With dead ends: 125543 [2019-09-07 19:17:02,608 INFO L226 Difference]: Without dead ends: 86398 [2019-09-07 19:17:02,687 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 19:17:02,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86398 states. [2019-09-07 19:17:06,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86398 to 86396. [2019-09-07 19:17:06,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86396 states. [2019-09-07 19:17:06,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86396 states to 86396 states and 128353 transitions. [2019-09-07 19:17:06,954 INFO L78 Accepts]: Start accepts. Automaton has 86396 states and 128353 transitions. Word has length 248 [2019-09-07 19:17:06,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:17:06,955 INFO L475 AbstractCegarLoop]: Abstraction has 86396 states and 128353 transitions. [2019-09-07 19:17:06,955 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-07 19:17:06,955 INFO L276 IsEmpty]: Start isEmpty. Operand 86396 states and 128353 transitions. [2019-09-07 19:17:06,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2019-09-07 19:17:06,966 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:17:06,967 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, 3, 3, 3, 3, 3, 3, 3, 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, 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 19:17:06,967 INFO L418 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:17:06,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:17:06,967 INFO L82 PathProgramCache]: Analyzing trace with hash 1283778016, now seen corresponding path program 1 times [2019-09-07 19:17:06,967 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:17:06,968 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:17:06,968 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:17:06,969 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:17:06,969 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:17:06,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:17:07,109 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 114 proven. 130 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2019-09-07 19:17:07,109 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:17:07,110 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 19:17:07,129 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 19:17:07,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:17:07,230 INFO L256 TraceCheckSpWp]: Trace formula consists of 536 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-07 19:17:07,237 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:17:07,318 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 174 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2019-09-07 19:17:07,330 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 19:17:07,330 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2019-09-07 19:17:07,332 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-07 19:17:07,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-07 19:17:07,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-09-07 19:17:07,332 INFO L87 Difference]: Start difference. First operand 86396 states and 128353 transitions. Second operand 8 states. [2019-09-07 19:17:20,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:17:20,135 INFO L93 Difference]: Finished difference Result 252229 states and 402107 transitions. [2019-09-07 19:17:20,136 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-09-07 19:17:20,136 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 269 [2019-09-07 19:17:20,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:17:21,118 INFO L225 Difference]: With dead ends: 252229 [2019-09-07 19:17:21,118 INFO L226 Difference]: Without dead ends: 165839 [2019-09-07 19:17:21,346 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 276 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2019-09-07 19:17:21,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165839 states. [2019-09-07 19:17:27,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165839 to 151007. [2019-09-07 19:17:27,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151007 states. [2019-09-07 19:17:28,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151007 states to 151007 states and 215548 transitions. [2019-09-07 19:17:28,101 INFO L78 Accepts]: Start accepts. Automaton has 151007 states and 215548 transitions. Word has length 269 [2019-09-07 19:17:28,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:17:28,101 INFO L475 AbstractCegarLoop]: Abstraction has 151007 states and 215548 transitions. [2019-09-07 19:17:28,102 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-07 19:17:28,102 INFO L276 IsEmpty]: Start isEmpty. Operand 151007 states and 215548 transitions. [2019-09-07 19:17:28,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2019-09-07 19:17:28,109 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:17:28,109 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 19:17:28,109 INFO L418 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:17:28,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:17:28,110 INFO L82 PathProgramCache]: Analyzing trace with hash -1148465968, now seen corresponding path program 1 times [2019-09-07 19:17:28,110 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:17:28,110 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:17:28,111 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:17:28,111 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:17:28,111 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:17:28,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:17:28,315 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 185 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 19:17:28,316 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:17:28,316 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 19:17:28,337 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:17:28,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:17:28,419 INFO L256 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 19:17:28,424 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:17:28,502 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 185 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 19:17:28,515 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 19:17:28,515 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 19:17:28,516 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 19:17:28,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 19:17:28,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 19:17:28,517 INFO L87 Difference]: Start difference. First operand 151007 states and 215548 transitions. Second operand 9 states. [2019-09-07 19:17:40,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:17:40,500 INFO L93 Difference]: Finished difference Result 298294 states and 433048 transitions. [2019-09-07 19:17:40,507 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-09-07 19:17:40,507 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 276 [2019-09-07 19:17:40,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:17:41,092 INFO L225 Difference]: With dead ends: 298294 [2019-09-07 19:17:41,093 INFO L226 Difference]: Without dead ends: 148104 [2019-09-07 19:17:41,296 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 277 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2019-09-07 19:17:41,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148104 states. [2019-09-07 19:17:47,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148104 to 146845. [2019-09-07 19:17:47,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146845 states. [2019-09-07 19:17:47,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146845 states to 146845 states and 190119 transitions. [2019-09-07 19:17:47,899 INFO L78 Accepts]: Start accepts. Automaton has 146845 states and 190119 transitions. Word has length 276 [2019-09-07 19:17:47,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:17:47,900 INFO L475 AbstractCegarLoop]: Abstraction has 146845 states and 190119 transitions. [2019-09-07 19:17:47,900 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 19:17:47,900 INFO L276 IsEmpty]: Start isEmpty. Operand 146845 states and 190119 transitions. [2019-09-07 19:17:47,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2019-09-07 19:17:47,916 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:17:47,917 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 19:17:47,917 INFO L418 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:17:47,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:17:47,917 INFO L82 PathProgramCache]: Analyzing trace with hash -1980191753, now seen corresponding path program 1 times [2019-09-07 19:17:47,918 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:17:47,918 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:17:47,918 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:17:47,919 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:17:47,919 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:17:47,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:17:48,199 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 321 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2019-09-07 19:17:48,200 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:17:48,200 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 19:17:48,219 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:17:48,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:17:48,325 INFO L256 TraceCheckSpWp]: Trace formula consists of 638 conjuncts, 5 conjunts are in the unsatisfiable core [2019-09-07 19:17:48,329 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:17:48,932 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2019-09-07 19:17:48,936 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 19:17:48,936 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2019-09-07 19:17:48,939 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-07 19:17:48,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-07 19:17:48,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-09-07 19:17:48,939 INFO L87 Difference]: Start difference. First operand 146845 states and 190119 transitions. Second operand 8 states. [2019-09-07 19:18:31,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:18:31,165 INFO L93 Difference]: Finished difference Result 553325 states and 766926 transitions. [2019-09-07 19:18:31,167 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2019-09-07 19:18:31,167 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 373 [2019-09-07 19:18:31,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:18:33,513 INFO L225 Difference]: With dead ends: 553325 [2019-09-07 19:18:33,513 INFO L226 Difference]: Without dead ends: 403230 [2019-09-07 19:18:33,705 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 406 GetRequests, 384 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=112, Invalid=394, Unknown=0, NotChecked=0, Total=506 [2019-09-07 19:18:33,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403230 states. [2019-09-07 19:18:39,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403230 to 363147. [2019-09-07 19:18:39,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363147 states. [2019-09-07 19:18:40,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363147 states to 363147 states and 446517 transitions. [2019-09-07 19:18:40,549 INFO L78 Accepts]: Start accepts. Automaton has 363147 states and 446517 transitions. Word has length 373 [2019-09-07 19:18:40,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:18:40,550 INFO L475 AbstractCegarLoop]: Abstraction has 363147 states and 446517 transitions. [2019-09-07 19:18:40,550 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-07 19:18:40,550 INFO L276 IsEmpty]: Start isEmpty. Operand 363147 states and 446517 transitions. [2019-09-07 19:18:40,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 572 [2019-09-07 19:18:40,629 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:18:40,629 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 19:18:40,629 INFO L418 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:18:40,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:18:40,630 INFO L82 PathProgramCache]: Analyzing trace with hash 797992852, now seen corresponding path program 1 times [2019-09-07 19:18:40,630 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:18:40,630 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:18:40,631 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:18:40,631 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:18:40,631 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:18:40,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:18:41,151 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 234 proven. 37 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2019-09-07 19:18:41,152 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:18:41,152 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 19:18:41,172 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 19:18:41,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:18:41,316 INFO L256 TraceCheckSpWp]: Trace formula consists of 832 conjuncts, 8 conjunts are in the unsatisfiable core [2019-09-07 19:18:41,324 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:18:46,349 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 305 proven. 74 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2019-09-07 19:18:46,352 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 19:18:46,353 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2019-09-07 19:18:46,354 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 19:18:46,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 19:18:46,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-07 19:18:46,355 INFO L87 Difference]: Start difference. First operand 363147 states and 446517 transitions. Second operand 6 states. [2019-09-07 19:18:57,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:18:57,398 INFO L93 Difference]: Finished difference Result 636297 states and 785808 transitions. [2019-09-07 19:18:57,398 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-07 19:18:57,398 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 571 [2019-09-07 19:18:57,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:18:58,634 INFO L225 Difference]: With dead ends: 636297 [2019-09-07 19:18:58,634 INFO L226 Difference]: Without dead ends: 365620 [2019-09-07 19:19:03,928 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 580 GetRequests, 574 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2019-09-07 19:19:04,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365620 states. [2019-09-07 19:19:07,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365620 to 350277. [2019-09-07 19:19:07,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 350277 states. [2019-09-07 19:19:08,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350277 states to 350277 states and 415096 transitions. [2019-09-07 19:19:08,990 INFO L78 Accepts]: Start accepts. Automaton has 350277 states and 415096 transitions. Word has length 571 [2019-09-07 19:19:08,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:19:08,991 INFO L475 AbstractCegarLoop]: Abstraction has 350277 states and 415096 transitions. [2019-09-07 19:19:08,991 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 19:19:08,991 INFO L276 IsEmpty]: Start isEmpty. Operand 350277 states and 415096 transitions. [2019-09-07 19:19:09,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 648 [2019-09-07 19:19:09,069 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:19:09,070 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 19:19:09,070 INFO L418 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:19:09,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:19:09,071 INFO L82 PathProgramCache]: Analyzing trace with hash 2138185453, now seen corresponding path program 1 times [2019-09-07 19:19:09,071 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:19:09,071 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:19:09,072 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:19:09,072 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:19:09,072 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:19:09,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:19:09,641 INFO L134 CoverageAnalysis]: Checked inductivity of 789 backedges. 232 proven. 146 refuted. 0 times theorem prover too weak. 411 trivial. 0 not checked. [2019-09-07 19:19:09,644 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:19:09,644 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 19:19:09,665 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 19:19:09,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:19:09,830 INFO L256 TraceCheckSpWp]: Trace formula consists of 955 conjuncts, 5 conjunts are in the unsatisfiable core [2019-09-07 19:19:09,836 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:19:09,869 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-07 19:19:09,900 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:19:14,661 INFO L134 CoverageAnalysis]: Checked inductivity of 789 backedges. 530 proven. 2 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2019-09-07 19:19:14,665 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 19:19:14,665 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 12 [2019-09-07 19:19:14,666 INFO L454 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-09-07 19:19:14,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-09-07 19:19:14,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2019-09-07 19:19:14,667 INFO L87 Difference]: Start difference. First operand 350277 states and 415096 transitions. Second operand 12 states. [2019-09-07 19:19:40,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:19:40,968 INFO L93 Difference]: Finished difference Result 800793 states and 947925 transitions. [2019-09-07 19:19:40,968 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2019-09-07 19:19:40,969 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 647 [2019-09-07 19:19:40,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:19:42,167 INFO L225 Difference]: With dead ends: 800793 [2019-09-07 19:19:42,167 INFO L226 Difference]: Without dead ends: 452833 [2019-09-07 19:19:42,438 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 730 GetRequests, 682 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 714 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=575, Invalid=1875, Unknown=0, NotChecked=0, Total=2450 [2019-09-07 19:19:42,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452833 states. [2019-09-07 19:19:49,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452833 to 428280. [2019-09-07 19:19:49,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 428280 states. [2019-09-07 19:19:59,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428280 states to 428280 states and 487162 transitions. [2019-09-07 19:19:59,471 INFO L78 Accepts]: Start accepts. Automaton has 428280 states and 487162 transitions. Word has length 647 [2019-09-07 19:19:59,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:19:59,471 INFO L475 AbstractCegarLoop]: Abstraction has 428280 states and 487162 transitions. [2019-09-07 19:19:59,471 INFO L476 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-09-07 19:19:59,471 INFO L276 IsEmpty]: Start isEmpty. Operand 428280 states and 487162 transitions. [2019-09-07 19:19:59,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 697 [2019-09-07 19:19:59,550 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:19:59,551 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 19:19:59,551 INFO L418 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:19:59,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:19:59,552 INFO L82 PathProgramCache]: Analyzing trace with hash 788982901, now seen corresponding path program 1 times [2019-09-07 19:19:59,552 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:19:59,552 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:19:59,553 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:19:59,553 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:19:59,553 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:19:59,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:20:01,511 INFO L134 CoverageAnalysis]: Checked inductivity of 721 backedges. 203 proven. 338 refuted. 0 times theorem prover too weak. 180 trivial. 0 not checked. [2019-09-07 19:20:01,512 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:20:01,512 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 19:20:01,539 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 19:20:01,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:20:01,726 INFO L256 TraceCheckSpWp]: Trace formula consists of 1042 conjuncts, 9 conjunts are in the unsatisfiable core [2019-09-07 19:20:01,736 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:20:02,007 INFO L134 CoverageAnalysis]: Checked inductivity of 721 backedges. 459 proven. 2 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2019-09-07 19:20:02,011 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 19:20:02,012 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2019-09-07 19:20:02,013 INFO L454 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-09-07 19:20:02,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-09-07 19:20:02,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2019-09-07 19:20:02,014 INFO L87 Difference]: Start difference. First operand 428280 states and 487162 transitions. Second operand 12 states. [2019-09-07 19:20:40,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:20:40,708 INFO L93 Difference]: Finished difference Result 972608 states and 1133470 transitions. [2019-09-07 19:20:40,708 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2019-09-07 19:20:40,709 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 696 [2019-09-07 19:20:40,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:20:43,008 INFO L225 Difference]: With dead ends: 972608 [2019-09-07 19:20:43,008 INFO L226 Difference]: Without dead ends: 549968 [2019-09-07 19:20:43,385 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 747 GetRequests, 713 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=326, Invalid=934, Unknown=0, NotChecked=0, Total=1260 [2019-09-07 19:20:43,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 549968 states. [2019-09-07 19:20:59,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 549968 to 528615. [2019-09-07 19:20:59,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 528615 states. [2019-09-07 19:20:59,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528615 states to 528615 states and 600997 transitions. [2019-09-07 19:20:59,843 INFO L78 Accepts]: Start accepts. Automaton has 528615 states and 600997 transitions. Word has length 696 [2019-09-07 19:20:59,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:20:59,843 INFO L475 AbstractCegarLoop]: Abstraction has 528615 states and 600997 transitions. [2019-09-07 19:20:59,843 INFO L476 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-09-07 19:20:59,844 INFO L276 IsEmpty]: Start isEmpty. Operand 528615 states and 600997 transitions. [2019-09-07 19:20:59,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 731 [2019-09-07 19:20:59,912 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:20:59,913 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 19:20:59,913 INFO L418 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:20:59,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:20:59,914 INFO L82 PathProgramCache]: Analyzing trace with hash 261413454, now seen corresponding path program 1 times [2019-09-07 19:20:59,914 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:20:59,914 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:20:59,914 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:20:59,915 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:20:59,915 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:21:00,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:21:06,900 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 300 proven. 131 refuted. 0 times theorem prover too weak. 317 trivial. 0 not checked. [2019-09-07 19:21:06,900 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:21:06,900 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 19:21:06,910 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:21:07,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:21:07,093 INFO L256 TraceCheckSpWp]: Trace formula consists of 1073 conjuncts, 16 conjunts are in the unsatisfiable core [2019-09-07 19:21:07,104 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:21:07,151 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-07 19:21:07,828 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 309 proven. 0 refuted. 0 times theorem prover too weak. 439 trivial. 0 not checked. [2019-09-07 19:21:07,842 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 19:21:07,843 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [15] total 18 [2019-09-07 19:21:07,845 INFO L454 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-09-07 19:21:07,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-09-07 19:21:07,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2019-09-07 19:21:07,847 INFO L87 Difference]: Start difference. First operand 528615 states and 600997 transitions. Second operand 18 states. [2019-09-07 19:21:56,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:21:56,910 INFO L93 Difference]: Finished difference Result 1115617 states and 1270781 transitions. [2019-09-07 19:21:56,910 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2019-09-07 19:21:56,910 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 730 [2019-09-07 19:21:56,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:21:58,242 INFO L225 Difference]: With dead ends: 1115617 [2019-09-07 19:21:58,242 INFO L226 Difference]: Without dead ends: 589868 [2019-09-07 19:21:58,566 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 902 GetRequests, 803 SyntacticMatches, 1 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3500 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=1623, Invalid=8277, Unknown=0, NotChecked=0, Total=9900 [2019-09-07 19:21:58,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589868 states. [2019-09-07 19:22:16,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589868 to 552431. [2019-09-07 19:22:16,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 552431 states. [2019-09-07 19:22:17,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552431 states to 552431 states and 620725 transitions. [2019-09-07 19:22:17,943 INFO L78 Accepts]: Start accepts. Automaton has 552431 states and 620725 transitions. Word has length 730 [2019-09-07 19:22:17,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:22:17,943 INFO L475 AbstractCegarLoop]: Abstraction has 552431 states and 620725 transitions. [2019-09-07 19:22:17,943 INFO L476 AbstractCegarLoop]: Interpolant automaton has 18 states. [2019-09-07 19:22:17,943 INFO L276 IsEmpty]: Start isEmpty. Operand 552431 states and 620725 transitions. [2019-09-07 19:22:18,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 837 [2019-09-07 19:22:18,011 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:22:18,012 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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 19:22:18,012 INFO L418 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:22:18,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:22:18,012 INFO L82 PathProgramCache]: Analyzing trace with hash -317700743, now seen corresponding path program 1 times [2019-09-07 19:22:18,013 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:22:18,013 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:22:18,014 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:22:18,014 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:22:18,014 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:22:18,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:22:20,040 INFO L134 CoverageAnalysis]: Checked inductivity of 1461 backedges. 579 proven. 88 refuted. 0 times theorem prover too weak. 794 trivial. 0 not checked. [2019-09-07 19:22:20,040 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:22:20,040 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 19:22:20,062 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:22:20,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:22:20,279 INFO L256 TraceCheckSpWp]: Trace formula consists of 1270 conjuncts, 12 conjunts are in the unsatisfiable core [2019-09-07 19:22:20,289 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:22:20,351 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-07 19:22:26,506 INFO L134 CoverageAnalysis]: Checked inductivity of 1461 backedges. 836 proven. 2 refuted. 0 times theorem prover too weak. 623 trivial. 0 not checked. [2019-09-07 19:22:26,511 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 19:22:26,511 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 13 [2019-09-07 19:22:26,512 INFO L454 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-09-07 19:22:26,512 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-09-07 19:22:26,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2019-09-07 19:22:26,513 INFO L87 Difference]: Start difference. First operand 552431 states and 620725 transitions. Second operand 13 states. [2019-09-07 19:23:37,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:23:37,124 INFO L93 Difference]: Finished difference Result 1308286 states and 1526162 transitions. [2019-09-07 19:23:37,124 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 126 states. [2019-09-07 19:23:37,124 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 836 [2019-09-07 19:23:37,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:23:39,416 INFO L225 Difference]: With dead ends: 1308286 [2019-09-07 19:23:39,416 INFO L226 Difference]: Without dead ends: 749147 [2019-09-07 19:23:40,834 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1059 GetRequests, 934 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6417 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=2062, Invalid=13940, Unknown=0, NotChecked=0, Total=16002 [2019-09-07 19:23:41,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749147 states. [2019-09-07 19:24:00,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749147 to 700590. [2019-09-07 19:24:00,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 700590 states. [2019-09-07 19:24:11,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 700590 states to 700590 states and 799203 transitions. [2019-09-07 19:24:11,973 INFO L78 Accepts]: Start accepts. Automaton has 700590 states and 799203 transitions. Word has length 836 [2019-09-07 19:24:11,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 19:24:11,973 INFO L475 AbstractCegarLoop]: Abstraction has 700590 states and 799203 transitions. [2019-09-07 19:24:11,974 INFO L476 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-09-07 19:24:11,974 INFO L276 IsEmpty]: Start isEmpty. Operand 700590 states and 799203 transitions. [2019-09-07 19:24:12,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1092 [2019-09-07 19:24:12,107 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 19:24:12,108 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 19:24:12,108 INFO L418 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 19:24:12,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 19:24:12,109 INFO L82 PathProgramCache]: Analyzing trace with hash 544030494, now seen corresponding path program 1 times [2019-09-07 19:24:12,109 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 19:24:12,109 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 19:24:12,110 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:24:12,110 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:24:12,110 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 19:24:12,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:24:15,081 INFO L134 CoverageAnalysis]: Checked inductivity of 1292 backedges. 805 proven. 37 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked. [2019-09-07 19:24:15,082 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 19:24:15,082 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 19:24:15,093 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 19:24:15,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 19:24:15,364 INFO L256 TraceCheckSpWp]: Trace formula consists of 1458 conjuncts, 15 conjunts are in the unsatisfiable core [2019-09-07 19:24:15,372 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 19:24:15,426 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:24:15,427 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 19:24:16,649 INFO L134 CoverageAnalysis]: Checked inductivity of 1292 backedges. 802 proven. 357 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2019-09-07 19:24:16,653 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 19:24:16,654 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10] total 16 [2019-09-07 19:24:16,655 INFO L454 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-09-07 19:24:16,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-09-07 19:24:16,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2019-09-07 19:24:16,656 INFO L87 Difference]: Start difference. First operand 700590 states and 799203 transitions. Second operand 16 states. [2019-09-07 19:25:55,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 19:25:55,693 INFO L93 Difference]: Finished difference Result 1709223 states and 1955271 transitions. [2019-09-07 19:25:55,694 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2019-09-07 19:25:55,694 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 1091 [2019-09-07 19:25:55,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 19:26:11,762 INFO L225 Difference]: With dead ends: 1709223 [2019-09-07 19:26:11,763 INFO L226 Difference]: Without dead ends: 1005780 [2019-09-07 19:26:12,392 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 1242 GetRequests, 1155 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2855 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1034, Invalid=6798, Unknown=0, NotChecked=0, Total=7832 [2019-09-07 19:26:13,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1005780 states. [2019-09-07 19:26:38,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1005780 to 889311. [2019-09-07 19:26:38,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 889311 states.