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/Problem15_label52.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-07 20:48:21,597 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-07 20:48:21,599 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-07 20:48:21,610 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-07 20:48:21,610 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-07 20:48:21,611 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-07 20:48:21,613 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-07 20:48:21,614 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-07 20:48:21,616 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-07 20:48:21,617 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-07 20:48:21,618 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-07 20:48:21,619 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-07 20:48:21,619 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-07 20:48:21,620 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-07 20:48:21,621 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-07 20:48:21,623 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-07 20:48:21,623 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-07 20:48:21,624 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-07 20:48:21,626 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-07 20:48:21,628 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-07 20:48:21,630 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-07 20:48:21,631 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-07 20:48:21,632 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-07 20:48:21,633 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-07 20:48:21,635 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-07 20:48:21,643 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-07 20:48:21,644 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-07 20:48:21,644 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-07 20:48:21,645 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 20:48:21,671 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-07 20:48:21,671 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-07 20:48:21,672 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-07 20:48:21,673 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-07 20:48:21,673 INFO L138 SettingsManager]: * Use SBE=true [2019-09-07 20:48:21,673 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-07 20:48:21,673 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-07 20:48:21,673 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-07 20:48:21,674 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-07 20:48:21,674 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-07 20:48:21,674 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-07 20:48:21,674 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-07 20:48:21,674 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-07 20:48:21,675 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-07 20:48:21,675 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-07 20:48:21,675 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-07 20:48:21,675 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-07 20:48:21,675 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-07 20:48:21,676 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-07 20:48:21,676 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-07 20:48:21,676 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-07 20:48:21,676 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-07 20:48:21,676 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-07 20:48:21,677 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-07 20:48:21,677 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-07 20:48:21,677 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-07 20:48:21,677 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-07 20:48:21,677 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-07 20:48:21,678 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-07 20:48:21,705 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-07 20:48:21,716 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-07 20:48:21,719 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-07 20:48:21,721 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-07 20:48:21,721 INFO L275 PluginConnector]: CDTParser initialized [2019-09-07 20:48:21,722 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label52.c [2019-09-07 20:48:21,785 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb4fa03b9/20b5cab959264c379e13f3809726eec7/FLAGf3e5f5b02 [2019-09-07 20:48:22,490 INFO L306 CDTParser]: Found 1 translation units. [2019-09-07 20:48:22,491 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem15_label52.c [2019-09-07 20:48:22,514 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb4fa03b9/20b5cab959264c379e13f3809726eec7/FLAGf3e5f5b02 [2019-09-07 20:48:22,633 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb4fa03b9/20b5cab959264c379e13f3809726eec7 [2019-09-07 20:48:22,643 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-07 20:48:22,645 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-07 20:48:22,646 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-07 20:48:22,646 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-07 20:48:22,650 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-07 20:48:22,651 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 08:48:22" (1/1) ... [2019-09-07 20:48:22,654 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@335c662c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 08:48:22, skipping insertion in model container [2019-09-07 20:48:22,654 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 08:48:22" (1/1) ... [2019-09-07 20:48:22,662 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-07 20:48:22,745 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-07 20:48:23,665 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 20:48:23,687 INFO L188 MainTranslator]: Completed pre-run [2019-09-07 20:48:24,150 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 20:48:24,172 INFO L192 MainTranslator]: Completed translation [2019-09-07 20:48:24,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 08:48:24 WrapperNode [2019-09-07 20:48:24,173 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-07 20:48:24,173 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-07 20:48:24,174 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-07 20:48:24,174 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-07 20:48:24,189 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 08:48:24" (1/1) ... [2019-09-07 20:48:24,190 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 08:48:24" (1/1) ... [2019-09-07 20:48:24,232 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 08:48:24" (1/1) ... [2019-09-07 20:48:24,232 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 08:48:24" (1/1) ... [2019-09-07 20:48:24,323 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 08:48:24" (1/1) ... [2019-09-07 20:48:24,343 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 08:48:24" (1/1) ... [2019-09-07 20:48:24,371 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 08:48:24" (1/1) ... [2019-09-07 20:48:24,391 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-07 20:48:24,392 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-07 20:48:24,392 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-07 20:48:24,392 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-07 20:48:24,393 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 08:48:24" (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 20:48:24,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-07 20:48:24,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-07 20:48:24,461 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-07 20:48:24,462 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-09-07 20:48:24,462 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-07 20:48:24,462 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-07 20:48:24,462 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-09-07 20:48:24,463 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-07 20:48:24,463 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-07 20:48:24,463 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-07 20:48:24,463 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-07 20:48:24,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-07 20:48:24,464 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-07 20:48:27,601 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-07 20:48:27,601 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-07 20:48:27,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 08:48:27 BoogieIcfgContainer [2019-09-07 20:48:27,608 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-07 20:48:27,609 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-07 20:48:27,609 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-07 20:48:27,615 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-07 20:48:27,615 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.09 08:48:22" (1/3) ... [2019-09-07 20:48:27,617 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2faa6466 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 08:48:27, skipping insertion in model container [2019-09-07 20:48:27,618 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 08:48:24" (2/3) ... [2019-09-07 20:48:27,619 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2faa6466 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 08:48:27, skipping insertion in model container [2019-09-07 20:48:27,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 08:48:27" (3/3) ... [2019-09-07 20:48:27,624 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem15_label52.c [2019-09-07 20:48:27,645 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-07 20:48:27,658 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-07 20:48:27,685 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-07 20:48:27,753 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-07 20:48:27,755 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-07 20:48:27,755 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-07 20:48:27,755 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-07 20:48:27,756 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-07 20:48:27,756 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-07 20:48:27,756 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-07 20:48:27,756 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-07 20:48:27,757 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-07 20:48:27,812 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states. [2019-09-07 20:48:27,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-09-07 20:48:27,822 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 20:48:27,824 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 20:48:27,826 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 20:48:27,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 20:48:27,835 INFO L82 PathProgramCache]: Analyzing trace with hash -1937912579, now seen corresponding path program 1 times [2019-09-07 20:48:27,838 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 20:48:27,839 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 20:48:27,919 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 20:48:27,919 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 20:48:27,919 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 20:48:28,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 20:48:28,297 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 20:48:28,300 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 20:48:28,300 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-07 20:48:28,305 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-07 20:48:28,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-07 20:48:28,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 20:48:28,323 INFO L87 Difference]: Start difference. First operand 437 states. Second operand 4 states. [2019-09-07 20:48:33,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 20:48:33,371 INFO L93 Difference]: Finished difference Result 1497 states and 2757 transitions. [2019-09-07 20:48:33,372 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-07 20:48:33,374 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2019-09-07 20:48:33,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 20:48:33,404 INFO L225 Difference]: With dead ends: 1497 [2019-09-07 20:48:33,404 INFO L226 Difference]: Without dead ends: 993 [2019-09-07 20:48:33,417 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 20:48:33,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 993 states. [2019-09-07 20:48:33,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 993 to 682. [2019-09-07 20:48:33,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 682 states. [2019-09-07 20:48:33,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 682 states to 682 states and 1002 transitions. [2019-09-07 20:48:33,526 INFO L78 Accepts]: Start accepts. Automaton has 682 states and 1002 transitions. Word has length 45 [2019-09-07 20:48:33,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 20:48:33,527 INFO L475 AbstractCegarLoop]: Abstraction has 682 states and 1002 transitions. [2019-09-07 20:48:33,527 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-07 20:48:33,527 INFO L276 IsEmpty]: Start isEmpty. Operand 682 states and 1002 transitions. [2019-09-07 20:48:33,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2019-09-07 20:48:33,533 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 20:48:33,533 INFO L399 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 20:48:33,534 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 20:48:33,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 20:48:33,534 INFO L82 PathProgramCache]: Analyzing trace with hash -954169670, now seen corresponding path program 1 times [2019-09-07 20:48:33,534 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 20:48:33,535 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 20:48:33,536 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 20:48:33,536 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 20:48:33,536 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 20:48:33,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 20:48:33,701 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 20:48:33,701 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 20:48:33,701 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-07 20:48:33,709 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-07 20:48:33,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-07 20:48:33,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 20:48:33,711 INFO L87 Difference]: Start difference. First operand 682 states and 1002 transitions. Second operand 4 states. [2019-09-07 20:48:37,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 20:48:37,338 INFO L93 Difference]: Finished difference Result 2601 states and 3858 transitions. [2019-09-07 20:48:37,339 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-07 20:48:37,339 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 114 [2019-09-07 20:48:37,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 20:48:37,352 INFO L225 Difference]: With dead ends: 2601 [2019-09-07 20:48:37,353 INFO L226 Difference]: Without dead ends: 1925 [2019-09-07 20:48:37,356 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 20:48:37,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1925 states. [2019-09-07 20:48:37,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1925 to 1923. [2019-09-07 20:48:37,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1923 states. [2019-09-07 20:48:37,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1923 states to 1923 states and 2578 transitions. [2019-09-07 20:48:37,419 INFO L78 Accepts]: Start accepts. Automaton has 1923 states and 2578 transitions. Word has length 114 [2019-09-07 20:48:37,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 20:48:37,419 INFO L475 AbstractCegarLoop]: Abstraction has 1923 states and 2578 transitions. [2019-09-07 20:48:37,419 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-07 20:48:37,420 INFO L276 IsEmpty]: Start isEmpty. Operand 1923 states and 2578 transitions. [2019-09-07 20:48:37,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2019-09-07 20:48:37,432 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 20:48:37,433 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:48:37,433 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 20:48:37,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 20:48:37,433 INFO L82 PathProgramCache]: Analyzing trace with hash 1815324654, now seen corresponding path program 1 times [2019-09-07 20:48:37,434 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 20:48:37,434 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 20:48:37,435 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 20:48:37,435 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 20:48:37,435 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 20:48:37,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 20:48:38,127 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 79 proven. 87 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-09-07 20:48:38,129 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 20:48:38,130 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 20:48:38,156 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 20:48:38,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 20:48:38,270 INFO L256 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 2 conjunts are in the unsatisfiable core [2019-09-07 20:48:38,304 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 20:48:38,419 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-09-07 20:48:38,433 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 20:48:38,433 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2019-09-07 20:48:38,435 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-07 20:48:38,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-07 20:48:38,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2019-09-07 20:48:38,436 INFO L87 Difference]: Start difference. First operand 1923 states and 2578 transitions. Second operand 7 states. [2019-09-07 20:48:43,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 20:48:43,475 INFO L93 Difference]: Finished difference Result 5436 states and 7449 transitions. [2019-09-07 20:48:43,476 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-09-07 20:48:43,476 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 297 [2019-09-07 20:48:43,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 20:48:43,499 INFO L225 Difference]: With dead ends: 5436 [2019-09-07 20:48:43,499 INFO L226 Difference]: Without dead ends: 3519 [2019-09-07 20:48:43,514 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 313 GetRequests, 304 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2019-09-07 20:48:43,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3519 states. [2019-09-07 20:48:43,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3519 to 3493. [2019-09-07 20:48:43,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3493 states. [2019-09-07 20:48:43,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3493 states to 3493 states and 4411 transitions. [2019-09-07 20:48:43,641 INFO L78 Accepts]: Start accepts. Automaton has 3493 states and 4411 transitions. Word has length 297 [2019-09-07 20:48:43,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 20:48:43,643 INFO L475 AbstractCegarLoop]: Abstraction has 3493 states and 4411 transitions. [2019-09-07 20:48:43,643 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-07 20:48:43,643 INFO L276 IsEmpty]: Start isEmpty. Operand 3493 states and 4411 transitions. [2019-09-07 20:48:43,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2019-09-07 20:48:43,649 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 20:48:43,650 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:48:43,651 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 20:48:43,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 20:48:43,651 INFO L82 PathProgramCache]: Analyzing trace with hash -816487084, now seen corresponding path program 1 times [2019-09-07 20:48:43,652 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 20:48:43,652 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 20:48:43,653 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 20:48:43,653 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 20:48:43,653 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 20:48:43,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 20:48:44,507 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 139 proven. 13 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-07 20:48:44,507 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 20:48:44,507 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 20:48:44,517 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 20:48:44,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 20:48:44,610 INFO L256 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 16 conjunts are in the unsatisfiable core [2019-09-07 20:48:44,617 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 20:48:44,705 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-07 20:48:44,913 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2019-09-07 20:48:44,925 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 20:48:44,926 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2019-09-07 20:48:44,927 INFO L454 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-09-07 20:48:44,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-09-07 20:48:44,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2019-09-07 20:48:44,928 INFO L87 Difference]: Start difference. First operand 3493 states and 4411 transitions. Second operand 13 states. [2019-09-07 20:48:57,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 20:48:57,764 INFO L93 Difference]: Finished difference Result 10830 states and 15471 transitions. [2019-09-07 20:48:57,764 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2019-09-07 20:48:57,765 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 325 [2019-09-07 20:48:57,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 20:48:57,816 INFO L225 Difference]: With dead ends: 10830 [2019-09-07 20:48:57,816 INFO L226 Difference]: Without dead ends: 7343 [2019-09-07 20:48:57,827 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 403 GetRequests, 340 SyntacticMatches, 3 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1324 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=827, Invalid=2955, Unknown=0, NotChecked=0, Total=3782 [2019-09-07 20:48:57,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7343 states. [2019-09-07 20:48:58,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7343 to 4551. [2019-09-07 20:48:58,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4551 states. [2019-09-07 20:48:58,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4551 states to 4551 states and 5884 transitions. [2019-09-07 20:48:58,121 INFO L78 Accepts]: Start accepts. Automaton has 4551 states and 5884 transitions. Word has length 325 [2019-09-07 20:48:58,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 20:48:58,123 INFO L475 AbstractCegarLoop]: Abstraction has 4551 states and 5884 transitions. [2019-09-07 20:48:58,123 INFO L476 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-09-07 20:48:58,123 INFO L276 IsEmpty]: Start isEmpty. Operand 4551 states and 5884 transitions. [2019-09-07 20:48:58,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 499 [2019-09-07 20:48:58,135 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 20:48:58,135 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 20:48:58,136 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 20:48:58,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 20:48:58,137 INFO L82 PathProgramCache]: Analyzing trace with hash 1797893762, now seen corresponding path program 1 times [2019-09-07 20:48:58,137 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 20:48:58,137 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 20:48:58,139 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 20:48:58,139 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 20:48:58,139 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 20:48:58,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 20:48:58,529 INFO L134 CoverageAnalysis]: Checked inductivity of 371 backedges. 292 proven. 2 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2019-09-07 20:48:58,530 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 20:48:58,530 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 20:48:58,539 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 20:48:58,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 20:48:58,666 INFO L256 TraceCheckSpWp]: Trace formula consists of 719 conjuncts, 4 conjunts are in the unsatisfiable core [2019-09-07 20:48:58,672 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 20:48:58,858 INFO L134 CoverageAnalysis]: Checked inductivity of 371 backedges. 292 proven. 2 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2019-09-07 20:48:58,861 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 20:48:58,861 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 9 [2019-09-07 20:48:58,862 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 20:48:58,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 20:48:58,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 20:48:58,863 INFO L87 Difference]: Start difference. First operand 4551 states and 5884 transitions. Second operand 9 states. [2019-09-07 20:49:04,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 20:49:04,416 INFO L93 Difference]: Finished difference Result 9827 states and 12976 transitions. [2019-09-07 20:49:04,416 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-09-07 20:49:04,416 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 498 [2019-09-07 20:49:04,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 20:49:04,439 INFO L225 Difference]: With dead ends: 9827 [2019-09-07 20:49:04,440 INFO L226 Difference]: Without dead ends: 5589 [2019-09-07 20:49:04,450 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 517 GetRequests, 503 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2019-09-07 20:49:04,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5589 states. [2019-09-07 20:49:04,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5589 to 5544. [2019-09-07 20:49:04,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5544 states. [2019-09-07 20:49:04,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5544 states to 5544 states and 6595 transitions. [2019-09-07 20:49:04,583 INFO L78 Accepts]: Start accepts. Automaton has 5544 states and 6595 transitions. Word has length 498 [2019-09-07 20:49:04,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 20:49:04,584 INFO L475 AbstractCegarLoop]: Abstraction has 5544 states and 6595 transitions. [2019-09-07 20:49:04,584 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 20:49:04,585 INFO L276 IsEmpty]: Start isEmpty. Operand 5544 states and 6595 transitions. [2019-09-07 20:49:04,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 585 [2019-09-07 20:49:04,607 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 20:49:04,608 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:49:04,609 INFO L418 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 20:49:04,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 20:49:04,609 INFO L82 PathProgramCache]: Analyzing trace with hash 332272720, now seen corresponding path program 1 times [2019-09-07 20:49:04,610 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 20:49:04,610 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 20:49:04,611 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 20:49:04,611 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 20:49:04,611 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 20:49:04,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 20:49:05,224 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 380 proven. 2 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2019-09-07 20:49:05,224 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 20:49:05,225 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 20:49:05,236 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 20:49:05,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 20:49:05,392 INFO L256 TraceCheckSpWp]: Trace formula consists of 807 conjuncts, 8 conjunts are in the unsatisfiable core [2019-09-07 20:49:05,398 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 20:49:05,446 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 20:49:05,447 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 20:49:05,448 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-07 20:49:05,451 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-07 20:49:05,455 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-07 20:49:17,651 WARN L188 SmtUtils]: Spent 12.12 s on a formula simplification. DAG size of input: 116 DAG size of output: 50 [2019-09-07 20:49:17,662 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-07 20:49:17,727 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-07 20:49:18,133 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 375 proven. 115 refuted. 0 times theorem prover too weak. 0 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 20:49:18,146 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 20:49:18,146 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 12 [2019-09-07 20:49:18,148 INFO L454 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-09-07 20:49:18,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-09-07 20:49:18,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2019-09-07 20:49:18,149 INFO L87 Difference]: Start difference. First operand 5544 states and 6595 transitions. Second operand 12 states. [2019-09-07 20:49:31,447 WARN L188 SmtUtils]: Spent 10.21 s on a formula simplification. DAG size of input: 56 DAG size of output: 55 [2019-09-07 20:49:42,007 WARN L188 SmtUtils]: Spent 10.18 s on a formula simplification. DAG size of input: 54 DAG size of output: 53 [2019-09-07 20:49:47,509 WARN L188 SmtUtils]: Spent 5.07 s on a formula simplification that was a NOOP. DAG size: 55 [2019-09-07 20:49:52,872 WARN L188 SmtUtils]: Spent 5.22 s on a formula simplification that was a NOOP. DAG size: 61 [2019-09-07 20:50:03,170 WARN L188 SmtUtils]: Spent 10.27 s on a formula simplification. DAG size of input: 56 DAG size of output: 55 [2019-09-07 20:50:08,998 WARN L188 SmtUtils]: Spent 5.14 s on a formula simplification that was a NOOP. DAG size: 60 [2019-09-07 20:50:17,023 WARN L188 SmtUtils]: Spent 5.10 s on a formula simplification that was a NOOP. DAG size: 59 [2019-09-07 20:50:28,314 WARN L188 SmtUtils]: Spent 10.22 s on a formula simplification. DAG size of input: 58 DAG size of output: 57 [2019-09-07 20:50:33,559 WARN L188 SmtUtils]: Spent 5.14 s on a formula simplification that was a NOOP. DAG size: 53 [2019-09-07 20:50:46,462 WARN L188 SmtUtils]: Spent 10.25 s on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2019-09-07 20:50:52,191 WARN L188 SmtUtils]: Spent 5.14 s on a formula simplification that was a NOOP. DAG size: 57 [2019-09-07 20:51:01,404 WARN L188 SmtUtils]: Spent 5.21 s on a formula simplification that was a NOOP. DAG size: 56 [2019-09-07 20:51:10,506 WARN L188 SmtUtils]: Spent 5.25 s on a formula simplification that was a NOOP. DAG size: 60 [2019-09-07 20:51:26,474 WARN L188 SmtUtils]: Spent 10.25 s on a formula simplification. DAG size of input: 62 DAG size of output: 61 [2019-09-07 20:51:36,032 WARN L188 SmtUtils]: Spent 5.21 s on a formula simplification that was a NOOP. DAG size: 59 [2019-09-07 20:51:43,942 WARN L188 SmtUtils]: Spent 5.21 s on a formula simplification that was a NOOP. DAG size: 61 [2019-09-07 20:51:49,533 WARN L188 SmtUtils]: Spent 5.24 s on a formula simplification that was a NOOP. DAG size: 62 [2019-09-07 20:52:02,867 WARN L188 SmtUtils]: Spent 10.35 s on a formula simplification. DAG size of input: 62 DAG size of output: 61 [2019-09-07 20:52:12,229 WARN L188 SmtUtils]: Spent 5.19 s on a formula simplification that was a NOOP. DAG size: 61 [2019-09-07 20:52:17,678 WARN L188 SmtUtils]: Spent 5.27 s on a formula simplification that was a NOOP. DAG size: 61 [2019-09-07 20:52:24,360 WARN L188 SmtUtils]: Spent 5.12 s on a formula simplification that was a NOOP. DAG size: 59 [2019-09-07 20:52:31,620 WARN L188 SmtUtils]: Spent 5.21 s on a formula simplification that was a NOOP. DAG size: 55 [2019-09-07 20:52:46,599 WARN L188 SmtUtils]: Spent 10.33 s on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2019-09-07 20:52:52,166 WARN L188 SmtUtils]: Spent 5.16 s on a formula simplification that was a NOOP. DAG size: 57 [2019-09-07 20:52:57,487 WARN L188 SmtUtils]: Spent 5.22 s on a formula simplification that was a NOOP. DAG size: 57 [2019-09-07 20:53:04,631 WARN L188 SmtUtils]: Spent 5.27 s on a formula simplification that was a NOOP. DAG size: 59 [2019-09-07 20:53:16,723 WARN L188 SmtUtils]: Spent 10.43 s on a formula simplification. DAG size of input: 64 DAG size of output: 63 [2019-09-07 20:53:29,076 WARN L188 SmtUtils]: Spent 10.45 s on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2019-09-07 20:53:34,660 WARN L188 SmtUtils]: Spent 5.18 s on a formula simplification that was a NOOP. DAG size: 57 [2019-09-07 20:53:45,598 WARN L188 SmtUtils]: Spent 10.40 s on a formula simplification. DAG size of input: 57 DAG size of output: 56 [2019-09-07 20:53:56,846 WARN L188 SmtUtils]: Spent 10.37 s on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2019-09-07 20:54:03,619 WARN L188 SmtUtils]: Spent 5.26 s on a formula simplification that was a NOOP. DAG size: 55 [2019-09-07 20:54:10,748 WARN L188 SmtUtils]: Spent 5.27 s on a formula simplification that was a NOOP. DAG size: 60 [2019-09-07 20:54:21,401 WARN L188 SmtUtils]: Spent 10.54 s on a formula simplification. DAG size of input: 62 DAG size of output: 61 [2019-09-07 20:54:26,822 WARN L188 SmtUtils]: Spent 5.37 s on a formula simplification that was a NOOP. DAG size: 63 [2019-09-07 20:54:38,397 WARN L188 SmtUtils]: Spent 5.23 s on a formula simplification that was a NOOP. DAG size: 63 [2019-09-07 20:54:51,564 WARN L188 SmtUtils]: Spent 10.43 s on a formula simplification. DAG size of input: 62 DAG size of output: 61 [2019-09-07 20:54:56,855 WARN L188 SmtUtils]: Spent 5.23 s on a formula simplification that was a NOOP. DAG size: 61 [2019-09-07 20:55:02,806 WARN L188 SmtUtils]: Spent 5.18 s on a formula simplification that was a NOOP. DAG size: 54 [2019-09-07 20:55:09,313 WARN L188 SmtUtils]: Spent 5.15 s on a formula simplification that was a NOOP. DAG size: 53 [2019-09-07 20:55:21,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 20:55:21,079 INFO L93 Difference]: Finished difference Result 19751 states and 25070 transitions. [2019-09-07 20:55:21,079 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2019-09-07 20:55:21,080 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 584 [2019-09-07 20:55:21,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 20:55:21,132 INFO L225 Difference]: With dead ends: 19751 [2019-09-07 20:55:21,132 INFO L226 Difference]: Without dead ends: 14520 [2019-09-07 20:55:21,156 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 826 GetRequests, 692 SyntacticMatches, 0 SemanticMatches, 134 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7314 ImplicationChecksByTransitivity, 295.0s TimeCoverageRelationStatistics Valid=1899, Invalid=16461, Unknown=0, NotChecked=0, Total=18360 [2019-09-07 20:55:21,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14520 states. [2019-09-07 20:55:21,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14520 to 13182. [2019-09-07 20:55:21,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13182 states. [2019-09-07 20:55:21,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13182 states to 13182 states and 15711 transitions. [2019-09-07 20:55:21,501 INFO L78 Accepts]: Start accepts. Automaton has 13182 states and 15711 transitions. Word has length 584 [2019-09-07 20:55:21,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 20:55:21,502 INFO L475 AbstractCegarLoop]: Abstraction has 13182 states and 15711 transitions. [2019-09-07 20:55:21,502 INFO L476 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-09-07 20:55:21,502 INFO L276 IsEmpty]: Start isEmpty. Operand 13182 states and 15711 transitions. [2019-09-07 20:55:21,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 645 [2019-09-07 20:55:21,527 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 20:55:21,527 INFO L399 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:55:21,528 INFO L418 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 20:55:21,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 20:55:21,528 INFO L82 PathProgramCache]: Analyzing trace with hash 1091994127, now seen corresponding path program 1 times [2019-09-07 20:55:21,528 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 20:55:21,528 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 20:55:21,529 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 20:55:21,529 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 20:55:21,529 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 20:55:21,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 20:55:22,420 INFO L134 CoverageAnalysis]: Checked inductivity of 1109 backedges. 295 proven. 296 refuted. 0 times theorem prover too weak. 518 trivial. 0 not checked. [2019-09-07 20:55:22,421 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 20:55:22,421 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 20:55:22,447 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 20:55:22,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 20:55:22,612 INFO L256 TraceCheckSpWp]: Trace formula consists of 938 conjuncts, 17 conjunts are in the unsatisfiable core [2019-09-07 20:55:22,628 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 20:55:22,704 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-09-07 20:55:22,741 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-09-07 20:55:23,348 INFO L134 CoverageAnalysis]: Checked inductivity of 1109 backedges. 696 proven. 41 refuted. 0 times theorem prover too weak. 372 trivial. 0 not checked. [2019-09-07 20:55:23,352 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 20:55:23,352 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 9] total 13 [2019-09-07 20:55:23,353 INFO L454 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-09-07 20:55:23,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-09-07 20:55:23,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2019-09-07 20:55:23,354 INFO L87 Difference]: Start difference. First operand 13182 states and 15711 transitions. Second operand 13 states. [2019-09-07 20:55:38,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 20:55:38,780 INFO L93 Difference]: Finished difference Result 42398 states and 52398 transitions. [2019-09-07 20:55:38,781 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2019-09-07 20:55:38,781 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 644 [2019-09-07 20:55:38,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 20:55:38,859 INFO L225 Difference]: With dead ends: 42398 [2019-09-07 20:55:38,859 INFO L226 Difference]: Without dead ends: 24734 [2019-09-07 20:55:38,907 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 771 GetRequests, 698 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1972 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1042, Invalid=4508, Unknown=0, NotChecked=0, Total=5550 [2019-09-07 20:55:38,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24734 states. [2019-09-07 20:55:39,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24734 to 18729. [2019-09-07 20:55:39,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18729 states. [2019-09-07 20:55:39,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18729 states to 18729 states and 21446 transitions. [2019-09-07 20:55:39,468 INFO L78 Accepts]: Start accepts. Automaton has 18729 states and 21446 transitions. Word has length 644 [2019-09-07 20:55:39,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 20:55:39,469 INFO L475 AbstractCegarLoop]: Abstraction has 18729 states and 21446 transitions. [2019-09-07 20:55:39,469 INFO L476 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-09-07 20:55:39,469 INFO L276 IsEmpty]: Start isEmpty. Operand 18729 states and 21446 transitions. [2019-09-07 20:55:39,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 683 [2019-09-07 20:55:39,487 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 20:55:39,488 INFO L399 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-07 20:55:39,489 INFO L418 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 20:55:39,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 20:55:39,489 INFO L82 PathProgramCache]: Analyzing trace with hash 754570013, now seen corresponding path program 1 times [2019-09-07 20:55:39,490 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 20:55:39,490 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 20:55:39,491 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 20:55:39,491 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 20:55:39,491 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 20:55:39,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 20:55:40,056 INFO L134 CoverageAnalysis]: Checked inductivity of 855 backedges. 511 proven. 2 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2019-09-07 20:55:40,056 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 20:55:40,056 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) [2019-09-07 20:55:40,073 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 20:55:40,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 20:55:40,233 INFO L256 TraceCheckSpWp]: Trace formula consists of 945 conjuncts, 5 conjunts are in the unsatisfiable core [2019-09-07 20:55:40,241 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 20:55:40,540 INFO L134 CoverageAnalysis]: Checked inductivity of 855 backedges. 511 proven. 2 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2019-09-07 20:55:40,544 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 20:55:40,544 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2019-09-07 20:55:40,545 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-07 20:55:40,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-07 20:55:40,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2019-09-07 20:55:40,546 INFO L87 Difference]: Start difference. First operand 18729 states and 21446 transitions. Second operand 8 states. [2019-09-07 20:55:47,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 20:55:47,272 INFO L93 Difference]: Finished difference Result 46185 states and 53466 transitions. [2019-09-07 20:55:47,272 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-09-07 20:55:47,272 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 682 [2019-09-07 20:55:47,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 20:55:47,313 INFO L225 Difference]: With dead ends: 46185 [2019-09-07 20:55:47,313 INFO L226 Difference]: Without dead ends: 21129 [2019-09-07 20:55:47,362 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 703 GetRequests, 689 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2019-09-07 20:55:47,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21129 states. [2019-09-07 20:55:47,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21129 to 19790. [2019-09-07 20:55:47,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19790 states. [2019-09-07 20:55:47,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19790 states to 19790 states and 21102 transitions. [2019-09-07 20:55:47,717 INFO L78 Accepts]: Start accepts. Automaton has 19790 states and 21102 transitions. Word has length 682 [2019-09-07 20:55:47,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 20:55:47,718 INFO L475 AbstractCegarLoop]: Abstraction has 19790 states and 21102 transitions. [2019-09-07 20:55:47,718 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-07 20:55:47,718 INFO L276 IsEmpty]: Start isEmpty. Operand 19790 states and 21102 transitions. [2019-09-07 20:55:47,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 740 [2019-09-07 20:55:47,736 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 20:55:47,738 INFO L399 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:55:47,738 INFO L418 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 20:55:47,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 20:55:47,738 INFO L82 PathProgramCache]: Analyzing trace with hash -868077711, now seen corresponding path program 1 times [2019-09-07 20:55:47,739 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 20:55:47,739 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 20:55:47,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 20:55:47,741 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 20:55:47,741 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 20:55:47,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 20:55:48,453 INFO L134 CoverageAnalysis]: Checked inductivity of 873 backedges. 166 proven. 2 refuted. 0 times theorem prover too weak. 705 trivial. 0 not checked. [2019-09-07 20:55:48,453 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 20:55:48,454 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 20:55:48,467 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 20:55:48,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 20:55:48,649 INFO L256 TraceCheckSpWp]: Trace formula consists of 999 conjuncts, 2 conjunts are in the unsatisfiable core [2019-09-07 20:55:48,657 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 20:55:49,055 INFO L134 CoverageAnalysis]: Checked inductivity of 873 backedges. 408 proven. 0 refuted. 0 times theorem prover too weak. 465 trivial. 0 not checked. [2019-09-07 20:55:49,061 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 20:55:49,062 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 3 [2019-09-07 20:55:49,064 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-07 20:55:49,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-07 20:55:49,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-07 20:55:49,065 INFO L87 Difference]: Start difference. First operand 19790 states and 21102 transitions. Second operand 3 states. [2019-09-07 20:55:50,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 20:55:50,736 INFO L93 Difference]: Finished difference Result 41094 states and 43953 transitions. [2019-09-07 20:55:50,737 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-07 20:55:50,737 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 739 [2019-09-07 20:55:50,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 20:55:50,782 INFO L225 Difference]: With dead ends: 41094 [2019-09-07 20:55:50,782 INFO L226 Difference]: Without dead ends: 21617 [2019-09-07 20:55:50,804 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 741 GetRequests, 740 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 20:55:50,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21617 states. [2019-09-07 20:55:51,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21617 to 21000. [2019-09-07 20:55:51,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21000 states. [2019-09-07 20:55:51,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21000 states to 21000 states and 22347 transitions. [2019-09-07 20:55:51,132 INFO L78 Accepts]: Start accepts. Automaton has 21000 states and 22347 transitions. Word has length 739 [2019-09-07 20:55:51,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 20:55:51,134 INFO L475 AbstractCegarLoop]: Abstraction has 21000 states and 22347 transitions. [2019-09-07 20:55:51,134 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-07 20:55:51,134 INFO L276 IsEmpty]: Start isEmpty. Operand 21000 states and 22347 transitions. [2019-09-07 20:55:51,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 753 [2019-09-07 20:55:51,150 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 20:55:51,152 INFO L399 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:55:51,152 INFO L418 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 20:55:51,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 20:55:51,153 INFO L82 PathProgramCache]: Analyzing trace with hash 388603118, now seen corresponding path program 1 times [2019-09-07 20:55:51,153 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 20:55:51,153 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 20:55:51,155 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 20:55:51,155 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 20:55:51,155 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 20:55:51,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 20:55:52,629 INFO L134 CoverageAnalysis]: Checked inductivity of 905 backedges. 163 proven. 650 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2019-09-07 20:55:52,629 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 20:55:52,629 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 20:55:52,646 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 20:55:52,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 20:55:52,826 INFO L256 TraceCheckSpWp]: Trace formula consists of 1011 conjuncts, 16 conjunts are in the unsatisfiable core [2019-09-07 20:55:52,841 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 20:55:52,894 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 20:55:52,895 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 20:55:59,619 WARN L188 SmtUtils]: Spent 2.39 s on a formula simplification. DAG size of input: 24 DAG size of output: 21 [2019-09-07 20:56:05,208 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 20:56:06,109 WARN L860 $PredicateComparison]: unable to prove that (or (exists ((v_prenex_11 Int)) (let ((.cse0 (mod v_prenex_11 299926))) (and (= 0 .cse0) (<= (+ v_prenex_11 44) 0) (<= .cse0 (+ c_~a0~0 300072))))) (exists ((v_~a0~0_834 Int)) (let ((.cse1 (mod v_~a0~0_834 299926))) (and (<= .cse1 (+ c_~a0~0 599998)) (<= (+ v_~a0~0_834 44) 0) (< v_~a0~0_834 0) (not (= 0 .cse1)))))) is different from true [2019-09-07 20:56:06,136 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 20:56:06,137 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 20:56:14,365 WARN L188 SmtUtils]: Spent 6.04 s on a formula simplification that was a NOOP. DAG size: 27 [2019-09-07 20:56:18,547 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 20:56:18,547 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-07 20:56:18,550 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-07 20:56:25,029 WARN L188 SmtUtils]: Spent 4.35 s on a formula simplification. DAG size of input: 69 DAG size of output: 34 [2019-09-07 20:56:30,412 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 20:57:25,948 INFO L134 CoverageAnalysis]: Checked inductivity of 905 backedges. 0 proven. 535 refuted. 0 times theorem prover too weak. 355 trivial. 15 not checked. [2019-09-07 20:57:25,952 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 20:57:25,952 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9] total 18 [2019-09-07 20:57:25,953 INFO L454 AbstractCegarLoop]: Interpolant automaton has 18 states [2019-09-07 20:57:25,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2019-09-07 20:57:25,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=232, Unknown=5, NotChecked=30, Total=306 [2019-09-07 20:57:25,955 INFO L87 Difference]: Start difference. First operand 21000 states and 22347 transitions. Second operand 18 states. [2019-09-07 20:57:31,292 WARN L188 SmtUtils]: Spent 1.26 s on a formula simplification that was a NOOP. DAG size: 29