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/Problem03_label19.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-07 13:19:41,436 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-07 13:19:41,438 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-07 13:19:41,452 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-09-07 13:19:41,466 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-07 13:19:41,467 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-07 13:19:41,468 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-07 13:19:41,469 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-07 13:19:41,470 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-07 13:19:41,470 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-07 13:19:41,472 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-07 13:19:41,474 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-07 13:19:41,476 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-07 13:19:41,477 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-07 13:19:41,478 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-07 13:19:41,479 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-07 13:19:41,484 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-07 13:19:41,496 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-07 13:19:41,497 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-07 13:19:41,498 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-07 13:19:41,498 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 13:19:41,526 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-07 13:19:41,527 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-07 13:19:41,529 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-07 13:19:41,529 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-07 13:19:41,529 INFO L138 SettingsManager]: * Use SBE=true [2019-09-07 13:19:41,530 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-07 13:19:41,530 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-07 13:19:41,530 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-07 13:19:41,530 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-07 13:19:41,530 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-07 13:19:41,531 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-07 13:19:41,532 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-07 13:19:41,532 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-07 13:19:41,532 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-07 13:19:41,533 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-07 13:19:41,533 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-07 13:19:41,533 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-07 13:19:41,533 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-07 13:19:41,533 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-07 13:19:41,534 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-07 13:19:41,534 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-07 13:19:41,534 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-07 13:19:41,534 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-07 13:19:41,535 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-07 13:19:41,535 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-07 13:19:41,535 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-07 13:19:41,535 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-07 13:19:41,535 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-07 13:19:41,536 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-07 13:19:41,588 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-07 13:19:41,604 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-07 13:19:41,608 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-07 13:19:41,609 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-07 13:19:41,610 INFO L275 PluginConnector]: CDTParser initialized [2019-09-07 13:19:41,610 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label19.c [2019-09-07 13:19:41,670 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a18abe6dd/a3a0343b59524b9281b177bc06c04f60/FLAGdfaa242eb [2019-09-07 13:19:42,309 INFO L306 CDTParser]: Found 1 translation units. [2019-09-07 13:19:42,311 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label19.c [2019-09-07 13:19:42,331 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a18abe6dd/a3a0343b59524b9281b177bc06c04f60/FLAGdfaa242eb [2019-09-07 13:19:42,479 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a18abe6dd/a3a0343b59524b9281b177bc06c04f60 [2019-09-07 13:19:42,489 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-07 13:19:42,491 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-07 13:19:42,492 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-07 13:19:42,492 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-07 13:19:42,495 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-07 13:19:42,496 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 01:19:42" (1/1) ... [2019-09-07 13:19:42,499 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7064d033 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:19:42, skipping insertion in model container [2019-09-07 13:19:42,499 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 01:19:42" (1/1) ... [2019-09-07 13:19:42,507 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-07 13:19:42,593 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-07 13:19:43,338 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 13:19:43,501 INFO L188 MainTranslator]: Completed pre-run [2019-09-07 13:19:43,984 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 13:19:44,008 INFO L192 MainTranslator]: Completed translation [2019-09-07 13:19:44,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:19:44 WrapperNode [2019-09-07 13:19:44,010 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-07 13:19:44,011 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-07 13:19:44,011 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-07 13:19:44,011 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-07 13:19:44,029 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:19:44" (1/1) ... [2019-09-07 13:19:44,030 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:19:44" (1/1) ... [2019-09-07 13:19:44,081 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:19:44" (1/1) ... [2019-09-07 13:19:44,081 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:19:44" (1/1) ... [2019-09-07 13:19:44,153 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:19:44" (1/1) ... [2019-09-07 13:19:44,167 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:19:44" (1/1) ... [2019-09-07 13:19:44,183 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:19:44" (1/1) ... [2019-09-07 13:19:44,198 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-07 13:19:44,198 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-07 13:19:44,199 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-07 13:19:44,199 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-07 13:19:44,200 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:19:44" (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 13:19:44,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-07 13:19:44,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-07 13:19:44,258 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-07 13:19:44,258 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-07 13:19:44,258 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-07 13:19:44,258 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-07 13:19:44,258 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-07 13:19:44,259 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-07 13:19:44,259 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-07 13:19:44,259 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-07 13:19:44,259 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-07 13:19:46,164 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-07 13:19:46,164 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-07 13:19:46,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 01:19:46 BoogieIcfgContainer [2019-09-07 13:19:46,171 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-07 13:19:46,173 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-07 13:19:46,174 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-07 13:19:46,180 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-07 13:19:46,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.09 01:19:42" (1/3) ... [2019-09-07 13:19:46,182 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43029c14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 01:19:46, skipping insertion in model container [2019-09-07 13:19:46,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 01:19:44" (2/3) ... [2019-09-07 13:19:46,183 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43029c14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 01:19:46, skipping insertion in model container [2019-09-07 13:19:46,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 01:19:46" (3/3) ... [2019-09-07 13:19:46,196 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem03_label19.c [2019-09-07 13:19:46,214 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-07 13:19:46,228 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-07 13:19:46,254 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-07 13:19:46,315 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-07 13:19:46,316 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-07 13:19:46,316 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-07 13:19:46,316 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-07 13:19:46,317 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-07 13:19:46,317 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-07 13:19:46,317 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-07 13:19:46,317 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-07 13:19:46,318 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-07 13:19:46,370 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states. [2019-09-07 13:19:46,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2019-09-07 13:19:46,434 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:19:46,437 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:19:46,443 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:19:46,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:19:46,451 INFO L82 PathProgramCache]: Analyzing trace with hash 1120905288, now seen corresponding path program 1 times [2019-09-07 13:19:46,453 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:19:46,454 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:19:46,507 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:19:46,507 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:19:46,508 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:19:46,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:19:47,283 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 13:19:47,285 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 13:19:47,286 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-07 13:19:47,291 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-07 13:19:47,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-07 13:19:47,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 13:19:47,309 INFO L87 Difference]: Start difference. First operand 311 states. Second operand 3 states. [2019-09-07 13:19:48,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:19:48,611 INFO L93 Difference]: Finished difference Result 852 states and 1505 transitions. [2019-09-07 13:19:48,612 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-07 13:19:48,613 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 193 [2019-09-07 13:19:48,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:19:48,632 INFO L225 Difference]: With dead ends: 852 [2019-09-07 13:19:48,632 INFO L226 Difference]: Without dead ends: 479 [2019-09-07 13:19:48,639 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 13:19:48,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2019-09-07 13:19:48,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 465. [2019-09-07 13:19:48,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 465 states. [2019-09-07 13:19:48,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 749 transitions. [2019-09-07 13:19:48,720 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 749 transitions. Word has length 193 [2019-09-07 13:19:48,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:19:48,723 INFO L475 AbstractCegarLoop]: Abstraction has 465 states and 749 transitions. [2019-09-07 13:19:48,723 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-07 13:19:48,724 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 749 transitions. [2019-09-07 13:19:48,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2019-09-07 13:19:48,734 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:19:48,735 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-07 13:19:48,735 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:19:48,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:19:48,736 INFO L82 PathProgramCache]: Analyzing trace with hash 353254539, now seen corresponding path program 1 times [2019-09-07 13:19:48,736 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:19:48,737 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:19:48,738 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:19:48,738 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:19:48,739 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:19:48,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:19:48,995 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 13:19:48,996 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 13:19:48,996 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-07 13:19:48,999 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 13:19:49,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 13:19:49,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-09-07 13:19:49,000 INFO L87 Difference]: Start difference. First operand 465 states and 749 transitions. Second operand 6 states. [2019-09-07 13:19:50,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:19:50,642 INFO L93 Difference]: Finished difference Result 1400 states and 2330 transitions. [2019-09-07 13:19:50,646 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-07 13:19:50,646 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 202 [2019-09-07 13:19:50,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:19:50,655 INFO L225 Difference]: With dead ends: 1400 [2019-09-07 13:19:50,655 INFO L226 Difference]: Without dead ends: 941 [2019-09-07 13:19:50,657 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 13:19:50,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 941 states. [2019-09-07 13:19:50,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 941 to 900. [2019-09-07 13:19:50,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 900 states. [2019-09-07 13:19:50,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 900 states to 900 states and 1440 transitions. [2019-09-07 13:19:50,736 INFO L78 Accepts]: Start accepts. Automaton has 900 states and 1440 transitions. Word has length 202 [2019-09-07 13:19:50,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:19:50,738 INFO L475 AbstractCegarLoop]: Abstraction has 900 states and 1440 transitions. [2019-09-07 13:19:50,738 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 13:19:50,738 INFO L276 IsEmpty]: Start isEmpty. Operand 900 states and 1440 transitions. [2019-09-07 13:19:50,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2019-09-07 13:19:50,745 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:19:50,745 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-07 13:19:50,746 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:19:50,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:19:50,746 INFO L82 PathProgramCache]: Analyzing trace with hash -1266804847, now seen corresponding path program 1 times [2019-09-07 13:19:50,746 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:19:50,746 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:19:50,747 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:19:50,748 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:19:50,748 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:19:50,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:19:50,863 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 13:19:50,864 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 13:19:50,864 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-07 13:19:50,865 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-07 13:19:50,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-07 13:19:50,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-07 13:19:50,866 INFO L87 Difference]: Start difference. First operand 900 states and 1440 transitions. Second operand 5 states. [2019-09-07 13:19:52,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:19:52,430 INFO L93 Difference]: Finished difference Result 2690 states and 4475 transitions. [2019-09-07 13:19:52,434 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-07 13:19:52,435 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 203 [2019-09-07 13:19:52,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:19:52,447 INFO L225 Difference]: With dead ends: 2690 [2019-09-07 13:19:52,447 INFO L226 Difference]: Without dead ends: 1796 [2019-09-07 13:19:52,451 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 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 13:19:52,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1796 states. [2019-09-07 13:19:52,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1796 to 1763. [2019-09-07 13:19:52,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1763 states. [2019-09-07 13:19:52,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1763 states to 1763 states and 2724 transitions. [2019-09-07 13:19:52,519 INFO L78 Accepts]: Start accepts. Automaton has 1763 states and 2724 transitions. Word has length 203 [2019-09-07 13:19:52,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:19:52,519 INFO L475 AbstractCegarLoop]: Abstraction has 1763 states and 2724 transitions. [2019-09-07 13:19:52,519 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-07 13:19:52,520 INFO L276 IsEmpty]: Start isEmpty. Operand 1763 states and 2724 transitions. [2019-09-07 13:19:52,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2019-09-07 13:19:52,526 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:19:52,526 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-07 13:19:52,527 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:19:52,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:19:52,527 INFO L82 PathProgramCache]: Analyzing trace with hash -1876994980, now seen corresponding path program 1 times [2019-09-07 13:19:52,527 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:19:52,527 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:19:52,528 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:19:52,529 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:19:52,529 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:19:52,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:19:52,733 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 13:19:52,734 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 13:19:52,734 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-07 13:19:52,735 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-07 13:19:52,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-07 13:19:52,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 13:19:52,735 INFO L87 Difference]: Start difference. First operand 1763 states and 2724 transitions. Second operand 3 states. [2019-09-07 13:19:53,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:19:53,688 INFO L93 Difference]: Finished difference Result 3521 states and 5468 transitions. [2019-09-07 13:19:53,688 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-07 13:19:53,689 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 205 [2019-09-07 13:19:53,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:19:53,699 INFO L225 Difference]: With dead ends: 3521 [2019-09-07 13:19:53,700 INFO L226 Difference]: Without dead ends: 1764 [2019-09-07 13:19:53,704 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 13:19:53,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1764 states. [2019-09-07 13:19:53,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1764 to 1763. [2019-09-07 13:19:53,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1763 states. [2019-09-07 13:19:53,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1763 states to 1763 states and 2491 transitions. [2019-09-07 13:19:53,754 INFO L78 Accepts]: Start accepts. Automaton has 1763 states and 2491 transitions. Word has length 205 [2019-09-07 13:19:53,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:19:53,755 INFO L475 AbstractCegarLoop]: Abstraction has 1763 states and 2491 transitions. [2019-09-07 13:19:53,756 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-07 13:19:53,756 INFO L276 IsEmpty]: Start isEmpty. Operand 1763 states and 2491 transitions. [2019-09-07 13:19:53,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2019-09-07 13:19:53,761 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:19:53,762 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-07 13:19:53,762 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:19:53,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:19:53,763 INFO L82 PathProgramCache]: Analyzing trace with hash 1988023360, now seen corresponding path program 1 times [2019-09-07 13:19:53,763 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:19:53,763 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:19:53,764 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:19:53,764 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:19:53,764 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:19:53,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:19:53,995 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 13:19:53,996 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 13:19:53,996 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-07 13:19:53,996 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-07 13:19:53,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-07 13:19:53,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 13:19:53,997 INFO L87 Difference]: Start difference. First operand 1763 states and 2491 transitions. Second operand 4 states. [2019-09-07 13:19:55,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:19:55,655 INFO L93 Difference]: Finished difference Result 6699 states and 9890 transitions. [2019-09-07 13:19:55,660 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-07 13:19:55,661 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 207 [2019-09-07 13:19:55,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:19:55,689 INFO L225 Difference]: With dead ends: 6699 [2019-09-07 13:19:55,689 INFO L226 Difference]: Without dead ends: 4942 [2019-09-07 13:19:55,696 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 13:19:55,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4942 states. [2019-09-07 13:19:55,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4942 to 4936. [2019-09-07 13:19:55,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4936 states. [2019-09-07 13:19:55,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4936 states to 4936 states and 6817 transitions. [2019-09-07 13:19:55,838 INFO L78 Accepts]: Start accepts. Automaton has 4936 states and 6817 transitions. Word has length 207 [2019-09-07 13:19:55,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:19:55,839 INFO L475 AbstractCegarLoop]: Abstraction has 4936 states and 6817 transitions. [2019-09-07 13:19:55,839 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-07 13:19:55,839 INFO L276 IsEmpty]: Start isEmpty. Operand 4936 states and 6817 transitions. [2019-09-07 13:19:55,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2019-09-07 13:19:55,855 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:19:55,855 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-07 13:19:55,856 INFO L418 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:19:55,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:19:55,856 INFO L82 PathProgramCache]: Analyzing trace with hash 889502373, now seen corresponding path program 1 times [2019-09-07 13:19:55,856 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:19:55,856 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:19:55,857 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:19:55,858 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:19:55,858 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:19:55,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:19:55,992 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 13:19:55,993 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:19:55,993 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-07 13:19:56,015 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 13:19:56,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:19:56,253 INFO L256 TraceCheckSpWp]: Trace formula consists of 1043 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 13:19:56,280 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:19:56,420 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (2)] Exception during sending of exit command (exit): Stream closed [2019-09-07 13:19:56,436 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 13:19:56,437 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2019-09-07 13:19:56,438 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-07 13:19:56,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-07 13:19:56,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-09-07 13:19:56,439 INFO L87 Difference]: Start difference. First operand 4936 states and 6817 transitions. Second operand 8 states. [2019-09-07 13:19:59,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:19:59,220 INFO L93 Difference]: Finished difference Result 19425 states and 29303 transitions. [2019-09-07 13:19:59,221 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-09-07 13:19:59,221 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 215 [2019-09-07 13:19:59,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:19:59,305 INFO L225 Difference]: With dead ends: 19425 [2019-09-07 13:19:59,305 INFO L226 Difference]: Without dead ends: 14495 [2019-09-07 13:19:59,325 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2019-09-07 13:19:59,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14495 states. [2019-09-07 13:19:59,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14495 to 14314. [2019-09-07 13:19:59,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14314 states. [2019-09-07 13:19:59,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14314 states to 14314 states and 18563 transitions. [2019-09-07 13:19:59,841 INFO L78 Accepts]: Start accepts. Automaton has 14314 states and 18563 transitions. Word has length 215 [2019-09-07 13:19:59,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:19:59,842 INFO L475 AbstractCegarLoop]: Abstraction has 14314 states and 18563 transitions. [2019-09-07 13:19:59,842 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-07 13:19:59,843 INFO L276 IsEmpty]: Start isEmpty. Operand 14314 states and 18563 transitions. [2019-09-07 13:19:59,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2019-09-07 13:19:59,881 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:19:59,881 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:19:59,882 INFO L418 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:19:59,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:19:59,887 INFO L82 PathProgramCache]: Analyzing trace with hash 350263467, now seen corresponding path program 1 times [2019-09-07 13:19:59,887 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:19:59,887 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:19:59,889 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:19:59,890 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:19:59,890 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:19:59,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:20:00,230 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 13:20:00,233 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:20:00,233 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 13:20:00,255 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 13:20:00,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:20:00,406 INFO L256 TraceCheckSpWp]: Trace formula consists of 880 conjuncts, 16 conjunts are in the unsatisfiable core [2019-09-07 13:20:00,417 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:20:00,472 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:20:00,570 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 13:20:00,575 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 13:20:00,575 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2019-09-07 13:20:00,576 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-09-07 13:20:00,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-09-07 13:20:00,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2019-09-07 13:20:00,577 INFO L87 Difference]: Start difference. First operand 14314 states and 18563 transitions. Second operand 10 states. [2019-09-07 13:20:05,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:20:05,294 INFO L93 Difference]: Finished difference Result 54207 states and 72587 transitions. [2019-09-07 13:20:05,294 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2019-09-07 13:20:05,294 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 225 [2019-09-07 13:20:05,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:20:05,432 INFO L225 Difference]: With dead ends: 54207 [2019-09-07 13:20:05,432 INFO L226 Difference]: Without dead ends: 39898 [2019-09-07 13:20:05,486 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 247 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=261, Invalid=669, Unknown=0, NotChecked=0, Total=930 [2019-09-07 13:20:05,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39898 states. [2019-09-07 13:20:06,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39898 to 39028. [2019-09-07 13:20:06,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39028 states. [2019-09-07 13:20:06,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39028 states to 39028 states and 49430 transitions. [2019-09-07 13:20:06,371 INFO L78 Accepts]: Start accepts. Automaton has 39028 states and 49430 transitions. Word has length 225 [2019-09-07 13:20:06,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:20:06,372 INFO L475 AbstractCegarLoop]: Abstraction has 39028 states and 49430 transitions. [2019-09-07 13:20:06,372 INFO L476 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-09-07 13:20:06,372 INFO L276 IsEmpty]: Start isEmpty. Operand 39028 states and 49430 transitions. [2019-09-07 13:20:06,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2019-09-07 13:20:06,442 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:20:06,443 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 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] [2019-09-07 13:20:06,443 INFO L418 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:20:06,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:20:06,444 INFO L82 PathProgramCache]: Analyzing trace with hash -1335637681, now seen corresponding path program 1 times [2019-09-07 13:20:06,444 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:20:06,444 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:20:06,446 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:20:06,446 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:20:06,446 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:20:06,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:20:07,407 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 47 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-09-07 13:20:07,408 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:20:07,408 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 13:20:07,427 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:20:07,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:20:07,598 INFO L256 TraceCheckSpWp]: Trace formula consists of 1222 conjuncts, 5 conjunts are in the unsatisfiable core [2019-09-07 13:20:07,603 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:20:07,625 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 13:20:07,676 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 50 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-09-07 13:20:07,687 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 13:20:07,687 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 13:20:07,688 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 13:20:07,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 13:20:07,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-09-07 13:20:07,688 INFO L87 Difference]: Start difference. First operand 39028 states and 49430 transitions. Second operand 9 states. [2019-09-07 13:20:11,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:20:11,234 INFO L93 Difference]: Finished difference Result 128391 states and 174389 transitions. [2019-09-07 13:20:11,235 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-07 13:20:11,235 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 239 [2019-09-07 13:20:11,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:20:11,547 INFO L225 Difference]: With dead ends: 128391 [2019-09-07 13:20:11,547 INFO L226 Difference]: Without dead ends: 89369 [2019-09-07 13:20:11,693 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2019-09-07 13:20:11,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89369 states. [2019-09-07 13:20:14,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89369 to 87165. [2019-09-07 13:20:14,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87165 states. [2019-09-07 13:20:14,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87165 states to 87165 states and 111840 transitions. [2019-09-07 13:20:14,674 INFO L78 Accepts]: Start accepts. Automaton has 87165 states and 111840 transitions. Word has length 239 [2019-09-07 13:20:14,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:20:14,674 INFO L475 AbstractCegarLoop]: Abstraction has 87165 states and 111840 transitions. [2019-09-07 13:20:14,675 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 13:20:14,675 INFO L276 IsEmpty]: Start isEmpty. Operand 87165 states and 111840 transitions. [2019-09-07 13:20:14,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2019-09-07 13:20:14,745 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:20:14,746 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:20:14,746 INFO L418 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:20:14,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:20:14,747 INFO L82 PathProgramCache]: Analyzing trace with hash 218376899, now seen corresponding path program 1 times [2019-09-07 13:20:14,747 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:20:14,747 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:20:14,748 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:20:14,748 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:20:14,748 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:20:14,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:20:14,876 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 50 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 13:20:14,876 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:20:14,877 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 13:20:14,892 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:20:15,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:20:15,480 INFO L256 TraceCheckSpWp]: Trace formula consists of 1056 conjuncts, 11 conjunts are in the unsatisfiable core [2019-09-07 13:20:15,489 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:20:15,591 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (5)] Exception during sending of exit command (exit): Broken pipe [2019-09-07 13:20:15,606 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 13:20:15,607 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2019-09-07 13:20:15,608 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 13:20:15,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 13:20:15,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-09-07 13:20:15,608 INFO L87 Difference]: Start difference. First operand 87165 states and 111840 transitions. Second operand 9 states. [2019-09-07 13:20:24,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:20:24,630 INFO L93 Difference]: Finished difference Result 192056 states and 294062 transitions. [2019-09-07 13:20:24,630 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2019-09-07 13:20:24,631 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 239 [2019-09-07 13:20:24,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:20:25,552 INFO L225 Difference]: With dead ends: 192056 [2019-09-07 13:20:25,552 INFO L226 Difference]: Without dead ends: 104897 [2019-09-07 13:20:25,670 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 413 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=269, Invalid=1213, Unknown=0, NotChecked=0, Total=1482 [2019-09-07 13:20:25,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104897 states. [2019-09-07 13:20:30,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104897 to 95585. [2019-09-07 13:20:30,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95585 states. [2019-09-07 13:20:30,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95585 states to 95585 states and 118258 transitions. [2019-09-07 13:20:30,391 INFO L78 Accepts]: Start accepts. Automaton has 95585 states and 118258 transitions. Word has length 239 [2019-09-07 13:20:30,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:20:30,391 INFO L475 AbstractCegarLoop]: Abstraction has 95585 states and 118258 transitions. [2019-09-07 13:20:30,391 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 13:20:30,391 INFO L276 IsEmpty]: Start isEmpty. Operand 95585 states and 118258 transitions. [2019-09-07 13:20:30,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2019-09-07 13:20:30,427 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:20:30,427 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:20:30,427 INFO L418 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:20:30,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:20:30,428 INFO L82 PathProgramCache]: Analyzing trace with hash 2141875029, now seen corresponding path program 1 times [2019-09-07 13:20:30,428 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:20:30,428 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:20:30,429 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:20:30,429 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:20:30,429 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:20:30,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:20:30,625 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 13:20:30,626 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 13:20:30,626 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-07 13:20:30,627 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-07 13:20:30,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-07 13:20:30,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2019-09-07 13:20:30,627 INFO L87 Difference]: Start difference. First operand 95585 states and 118258 transitions. Second operand 7 states. [2019-09-07 13:20:34,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:20:34,567 INFO L93 Difference]: Finished difference Result 259197 states and 362152 transitions. [2019-09-07 13:20:34,568 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-07 13:20:34,568 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 248 [2019-09-07 13:20:34,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:20:35,313 INFO L225 Difference]: With dead ends: 259197 [2019-09-07 13:20:35,314 INFO L226 Difference]: Without dead ends: 166583 [2019-09-07 13:20:35,513 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2019-09-07 13:20:35,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166583 states. [2019-09-07 13:20:42,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166583 to 148490. [2019-09-07 13:20:42,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148490 states. [2019-09-07 13:20:42,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148490 states to 148490 states and 185132 transitions. [2019-09-07 13:20:42,787 INFO L78 Accepts]: Start accepts. Automaton has 148490 states and 185132 transitions. Word has length 248 [2019-09-07 13:20:42,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:20:42,787 INFO L475 AbstractCegarLoop]: Abstraction has 148490 states and 185132 transitions. [2019-09-07 13:20:42,787 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-07 13:20:42,787 INFO L276 IsEmpty]: Start isEmpty. Operand 148490 states and 185132 transitions. [2019-09-07 13:20:42,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2019-09-07 13:20:42,836 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:20:42,836 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 13:20:42,837 INFO L418 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:20:42,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:20:42,837 INFO L82 PathProgramCache]: Analyzing trace with hash -968508627, now seen corresponding path program 1 times [2019-09-07 13:20:42,837 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:20:42,837 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:20:42,838 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:20:42,838 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:20:42,839 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:20:42,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:20:43,110 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-07 13:20:43,111 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:20:43,111 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-07 13:20:43,126 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 13:20:43,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:20:43,290 INFO L256 TraceCheckSpWp]: Trace formula consists of 919 conjuncts, 8 conjunts are in the unsatisfiable core [2019-09-07 13:20:43,302 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:20:43,394 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 61 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-07 13:20:43,401 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 13:20:43,401 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2019-09-07 13:20:43,402 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-07 13:20:43,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-07 13:20:43,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-07 13:20:43,402 INFO L87 Difference]: Start difference. First operand 148490 states and 185132 transitions. Second operand 6 states. [2019-09-07 13:20:46,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:20:46,184 INFO L93 Difference]: Finished difference Result 296178 states and 383627 transitions. [2019-09-07 13:20:46,185 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-07 13:20:46,185 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 260 [2019-09-07 13:20:46,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:20:46,615 INFO L225 Difference]: With dead ends: 296178 [2019-09-07 13:20:46,615 INFO L226 Difference]: Without dead ends: 150659 [2019-09-07 13:20:46,793 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 263 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 13:20:46,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150659 states. [2019-09-07 13:20:52,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150659 to 137210. [2019-09-07 13:20:52,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137210 states. [2019-09-07 13:20:53,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137210 states to 137210 states and 170002 transitions. [2019-09-07 13:20:53,260 INFO L78 Accepts]: Start accepts. Automaton has 137210 states and 170002 transitions. Word has length 260 [2019-09-07 13:20:53,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:20:53,261 INFO L475 AbstractCegarLoop]: Abstraction has 137210 states and 170002 transitions. [2019-09-07 13:20:53,261 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-07 13:20:53,261 INFO L276 IsEmpty]: Start isEmpty. Operand 137210 states and 170002 transitions. [2019-09-07 13:20:53,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2019-09-07 13:20:53,298 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:20:53,299 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:20:53,299 INFO L418 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:20:53,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:20:53,299 INFO L82 PathProgramCache]: Analyzing trace with hash -542693283, now seen corresponding path program 1 times [2019-09-07 13:20:53,299 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:20:53,299 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:20:53,300 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:20:53,300 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:20:53,300 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:20:53,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:20:53,468 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 75 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 13:20:53,470 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:20:53,471 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 13:20:53,486 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:20:53,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:20:53,658 INFO L256 TraceCheckSpWp]: Trace formula consists of 1069 conjuncts, 7 conjunts are in the unsatisfiable core [2019-09-07 13:20:53,663 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:20:53,731 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 75 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 13:20:53,735 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 13:20:53,735 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2019-09-07 13:20:53,736 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-07 13:20:53,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-07 13:20:53,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2019-09-07 13:20:53,737 INFO L87 Difference]: Start difference. First operand 137210 states and 170002 transitions. Second operand 7 states. [2019-09-07 13:20:58,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:20:58,918 INFO L93 Difference]: Finished difference Result 491265 states and 669061 transitions. [2019-09-07 13:20:58,919 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-07 13:20:58,919 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 262 [2019-09-07 13:20:58,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:21:01,336 INFO L225 Difference]: With dead ends: 491265 [2019-09-07 13:21:01,336 INFO L226 Difference]: Without dead ends: 357026 [2019-09-07 13:21:01,545 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2019-09-07 13:21:01,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 357026 states. [2019-09-07 13:21:12,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 357026 to 340416. [2019-09-07 13:21:12,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340416 states. [2019-09-07 13:21:13,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340416 states to 340416 states and 429793 transitions. [2019-09-07 13:21:13,784 INFO L78 Accepts]: Start accepts. Automaton has 340416 states and 429793 transitions. Word has length 262 [2019-09-07 13:21:13,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:21:13,784 INFO L475 AbstractCegarLoop]: Abstraction has 340416 states and 429793 transitions. [2019-09-07 13:21:13,784 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-07 13:21:13,784 INFO L276 IsEmpty]: Start isEmpty. Operand 340416 states and 429793 transitions. [2019-09-07 13:21:13,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2019-09-07 13:21:13,903 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:21:13,903 INFO L399 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:21:13,903 INFO L418 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:21:13,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:21:13,904 INFO L82 PathProgramCache]: Analyzing trace with hash -576973518, now seen corresponding path program 1 times [2019-09-07 13:21:13,904 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:21:13,904 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:21:13,905 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:21:13,905 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:21:13,905 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:21:13,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:21:14,220 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 101 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 13:21:14,220 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:21:14,221 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 13:21:14,249 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 13:21:14,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:21:14,429 INFO L256 TraceCheckSpWp]: Trace formula consists of 1100 conjuncts, 7 conjunts are in the unsatisfiable core [2019-09-07 13:21:14,435 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:21:14,510 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2019-09-07 13:21:14,514 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 13:21:14,515 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2019-09-07 13:21:14,516 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-07 13:21:14,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-07 13:21:14,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-09-07 13:21:14,517 INFO L87 Difference]: Start difference. First operand 340416 states and 429793 transitions. Second operand 7 states. [2019-09-07 13:21:36,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:21:36,871 INFO L93 Difference]: Finished difference Result 817559 states and 1102214 transitions. [2019-09-07 13:21:36,872 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-09-07 13:21:36,872 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 281 [2019-09-07 13:21:36,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:21:38,964 INFO L225 Difference]: With dead ends: 817559 [2019-09-07 13:21:38,964 INFO L226 Difference]: Without dead ends: 477881 [2019-09-07 13:21:39,424 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 292 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=96, Invalid=246, Unknown=0, NotChecked=0, Total=342 [2019-09-07 13:21:40,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477881 states. [2019-09-07 13:21:50,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477881 to 460433. [2019-09-07 13:21:50,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 460433 states. [2019-09-07 13:21:51,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460433 states to 460433 states and 562664 transitions. [2019-09-07 13:21:51,190 INFO L78 Accepts]: Start accepts. Automaton has 460433 states and 562664 transitions. Word has length 281 [2019-09-07 13:21:51,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:21:51,190 INFO L475 AbstractCegarLoop]: Abstraction has 460433 states and 562664 transitions. [2019-09-07 13:21:51,190 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-07 13:21:51,191 INFO L276 IsEmpty]: Start isEmpty. Operand 460433 states and 562664 transitions. [2019-09-07 13:21:52,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2019-09-07 13:21:52,841 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:21:52,841 INFO L399 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 13:21:52,841 INFO L418 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:21:52,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:21:52,841 INFO L82 PathProgramCache]: Analyzing trace with hash 261068372, now seen corresponding path program 1 times [2019-09-07 13:21:52,842 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:21:52,842 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:21:52,842 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:21:52,842 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:21:52,842 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:21:52,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:21:53,201 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 144 proven. 34 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-09-07 13:21:53,201 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:21:53,201 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 13:21:53,222 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 13:21:53,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:21:53,410 INFO L256 TraceCheckSpWp]: Trace formula consists of 1298 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-07 13:21:53,424 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:21:53,571 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 145 proven. 30 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [MP z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (9)] Exception during sending of exit command (exit): Broken pipe [2019-09-07 13:21:53,585 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 13:21:53,585 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4] total 8 [2019-09-07 13:21:53,587 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-07 13:21:53,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-07 13:21:53,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-09-07 13:21:53,588 INFO L87 Difference]: Start difference. First operand 460433 states and 562664 transitions. Second operand 8 states. [2019-09-07 13:22:21,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:22:21,947 INFO L93 Difference]: Finished difference Result 986985 states and 1279557 transitions. [2019-09-07 13:22:21,948 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2019-09-07 13:22:21,948 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 325 [2019-09-07 13:22:21,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:22:23,996 INFO L225 Difference]: With dead ends: 986985 [2019-09-07 13:22:23,996 INFO L226 Difference]: Without dead ends: 520586 [2019-09-07 13:22:25,270 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 378 GetRequests, 347 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 296 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=235, Invalid=821, Unknown=0, NotChecked=0, Total=1056 [2019-09-07 13:22:25,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520586 states. [2019-09-07 13:22:35,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520586 to 497175. [2019-09-07 13:22:35,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 497175 states. [2019-09-07 13:22:36,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 497175 states to 497175 states and 588118 transitions. [2019-09-07 13:22:36,906 INFO L78 Accepts]: Start accepts. Automaton has 497175 states and 588118 transitions. Word has length 325 [2019-09-07 13:22:36,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:22:36,906 INFO L475 AbstractCegarLoop]: Abstraction has 497175 states and 588118 transitions. [2019-09-07 13:22:36,907 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-07 13:22:36,907 INFO L276 IsEmpty]: Start isEmpty. Operand 497175 states and 588118 transitions. [2019-09-07 13:22:37,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2019-09-07 13:22:37,247 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:22:37,247 INFO L399 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:22:37,247 INFO L418 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:22:37,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:22:37,247 INFO L82 PathProgramCache]: Analyzing trace with hash -2049568439, now seen corresponding path program 1 times [2019-09-07 13:22:37,247 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:22:37,248 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:22:37,248 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:22:37,248 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:22:37,248 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:22:37,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:22:38,862 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 235 proven. 34 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2019-09-07 13:22:38,863 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:22:38,863 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 13:22:38,873 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:22:39,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:22:39,111 INFO L256 TraceCheckSpWp]: Trace formula consists of 1503 conjuncts, 21 conjunts are in the unsatisfiable core [2019-09-07 13:22:39,117 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:22:39,260 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 138 proven. 2 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2019-09-07 13:22:39,264 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 13:22:39,264 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 12 [2019-09-07 13:22:39,265 INFO L454 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-09-07 13:22:39,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-09-07 13:22:39,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2019-09-07 13:22:39,265 INFO L87 Difference]: Start difference. First operand 497175 states and 588118 transitions. Second operand 12 states. [2019-09-07 13:23:09,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:23:09,977 INFO L93 Difference]: Finished difference Result 1260897 states and 1569856 transitions. [2019-09-07 13:23:09,978 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-09-07 13:23:09,978 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 385 [2019-09-07 13:23:09,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:23:12,862 INFO L225 Difference]: With dead ends: 1260897 [2019-09-07 13:23:12,863 INFO L226 Difference]: Without dead ends: 764519 [2019-09-07 13:23:13,518 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 415 GetRequests, 393 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=133, Invalid=419, Unknown=0, NotChecked=0, Total=552 [2019-09-07 13:23:14,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764519 states. [2019-09-07 13:23:30,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764519 to 733537. [2019-09-07 13:23:30,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733537 states. [2019-09-07 13:23:48,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733537 states to 733537 states and 865276 transitions. [2019-09-07 13:23:48,596 INFO L78 Accepts]: Start accepts. Automaton has 733537 states and 865276 transitions. Word has length 385 [2019-09-07 13:23:48,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 13:23:48,596 INFO L475 AbstractCegarLoop]: Abstraction has 733537 states and 865276 transitions. [2019-09-07 13:23:48,596 INFO L476 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-09-07 13:23:48,597 INFO L276 IsEmpty]: Start isEmpty. Operand 733537 states and 865276 transitions. [2019-09-07 13:23:49,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2019-09-07 13:23:49,096 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 13:23:49,097 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 13:23:49,097 INFO L418 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 13:23:49,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 13:23:49,097 INFO L82 PathProgramCache]: Analyzing trace with hash -1544458832, now seen corresponding path program 1 times [2019-09-07 13:23:49,097 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 13:23:49,098 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 13:23:49,098 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:23:49,098 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 13:23:49,098 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 13:23:49,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:23:49,446 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 325 proven. 32 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-09-07 13:23:49,446 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 13:23:49,446 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-07 13:23:49,460 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 13:23:49,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 13:23:49,700 INFO L256 TraceCheckSpWp]: Trace formula consists of 1394 conjuncts, 11 conjunts are in the unsatisfiable core [2019-09-07 13:23:49,707 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 13:23:51,506 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 228 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2019-09-07 13:23:51,511 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 13:23:51,512 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2019-09-07 13:23:51,513 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 13:23:51,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 13:23:51,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-09-07 13:23:51,514 INFO L87 Difference]: Start difference. First operand 733537 states and 865276 transitions. Second operand 9 states. [2019-09-07 13:26:21,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 13:26:21,164 INFO L93 Difference]: Finished difference Result 4040164 states and 5484782 transitions. [2019-09-07 13:26:21,164 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2019-09-07 13:26:21,164 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 428 [2019-09-07 13:26:21,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 13:26:44,658 INFO L225 Difference]: With dead ends: 4040164 [2019-09-07 13:26:44,658 INFO L226 Difference]: Without dead ends: 3277428 [2019-09-07 13:26:48,858 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 479 GetRequests, 447 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 293 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=227, Invalid=895, Unknown=0, NotChecked=0, Total=1122