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/Problem17_label32.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-07 21:50:20,777 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-07 21:50:20,779 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-07 21:50:20,791 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-07 21:50:20,791 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-07 21:50:20,792 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-07 21:50:20,794 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-07 21:50:20,795 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-07 21:50:20,797 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-07 21:50:20,798 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-07 21:50:20,799 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-07 21:50:20,800 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-07 21:50:20,801 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-07 21:50:20,802 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-07 21:50:20,802 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-07 21:50:20,804 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-07 21:50:20,805 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-07 21:50:20,806 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-07 21:50:20,807 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-07 21:50:20,809 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-07 21:50:20,811 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-07 21:50:20,812 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-07 21:50:20,814 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-07 21:50:20,814 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-07 21:50:20,817 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-09-07 21:50:20,831 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-07 21:50:20,835 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-07 21:50:20,836 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-07 21:50:20,837 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 21:50:20,864 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-07 21:50:20,864 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-07 21:50:20,867 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-07 21:50:20,867 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-07 21:50:20,867 INFO L138 SettingsManager]: * Use SBE=true [2019-09-07 21:50:20,868 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-07 21:50:20,868 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-07 21:50:20,868 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-07 21:50:20,868 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-07 21:50:20,869 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-07 21:50:20,870 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-07 21:50:20,870 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-07 21:50:20,870 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-07 21:50:20,871 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-07 21:50:20,871 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-07 21:50:20,871 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-07 21:50:20,871 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-07 21:50:20,871 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-07 21:50:20,872 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-07 21:50:20,872 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-07 21:50:20,872 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-07 21:50:20,873 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-07 21:50:20,873 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-07 21:50:20,873 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-07 21:50:20,873 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-07 21:50:20,873 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-07 21:50:20,874 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-07 21:50:20,874 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-07 21:50:20,874 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-07 21:50:20,922 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-07 21:50:20,940 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-07 21:50:20,944 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-07 21:50:20,946 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-07 21:50:20,946 INFO L275 PluginConnector]: CDTParser initialized [2019-09-07 21:50:20,947 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label32.c [2019-09-07 21:50:21,009 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe630b7b9/5f9e51a504d5423a848ee49d1d2c0704/FLAG908e579ea [2019-09-07 21:50:21,716 INFO L306 CDTParser]: Found 1 translation units. [2019-09-07 21:50:21,719 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label32.c [2019-09-07 21:50:21,744 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe630b7b9/5f9e51a504d5423a848ee49d1d2c0704/FLAG908e579ea [2019-09-07 21:50:21,855 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe630b7b9/5f9e51a504d5423a848ee49d1d2c0704 [2019-09-07 21:50:21,867 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-07 21:50:21,869 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-07 21:50:21,871 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-07 21:50:21,871 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-07 21:50:21,876 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-07 21:50:21,877 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 09:50:21" (1/1) ... [2019-09-07 21:50:21,880 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@318a8aa5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 09:50:21, skipping insertion in model container [2019-09-07 21:50:21,880 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.09 09:50:21" (1/1) ... [2019-09-07 21:50:21,888 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-07 21:50:22,002 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-07 21:50:23,034 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 21:50:23,045 INFO L188 MainTranslator]: Completed pre-run [2019-09-07 21:50:23,516 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-07 21:50:23,541 INFO L192 MainTranslator]: Completed translation [2019-09-07 21:50:23,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 09:50:23 WrapperNode [2019-09-07 21:50:23,543 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-07 21:50:23,544 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-07 21:50:23,544 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-07 21:50:23,544 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-07 21:50:23,560 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 09:50:23" (1/1) ... [2019-09-07 21:50:23,560 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 09:50:23" (1/1) ... [2019-09-07 21:50:23,608 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 09:50:23" (1/1) ... [2019-09-07 21:50:23,610 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 09:50:23" (1/1) ... [2019-09-07 21:50:23,779 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 09:50:23" (1/1) ... [2019-09-07 21:50:23,812 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 09:50:23" (1/1) ... [2019-09-07 21:50:23,845 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 09:50:23" (1/1) ... [2019-09-07 21:50:23,878 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-07 21:50:23,879 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-07 21:50:23,879 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-07 21:50:23,879 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-07 21:50:23,880 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 09:50:23" (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 21:50:23,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-07 21:50:23,947 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-07 21:50:23,947 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-09-07 21:50:23,947 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-09-07 21:50:23,948 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-07 21:50:23,948 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-09-07 21:50:23,948 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-09-07 21:50:23,948 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-07 21:50:23,948 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-07 21:50:23,949 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-07 21:50:23,949 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-07 21:50:23,949 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-07 21:50:23,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-07 21:50:28,133 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-07 21:50:28,134 INFO L283 CfgBuilder]: Removed 1 assume(true) statements. [2019-09-07 21:50:28,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 09:50:28 BoogieIcfgContainer [2019-09-07 21:50:28,137 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-07 21:50:28,138 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-07 21:50:28,138 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-07 21:50:28,142 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-07 21:50:28,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.09 09:50:21" (1/3) ... [2019-09-07 21:50:28,143 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fd33f51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 09:50:28, skipping insertion in model container [2019-09-07 21:50:28,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.09 09:50:23" (2/3) ... [2019-09-07 21:50:28,144 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fd33f51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.09 09:50:28, skipping insertion in model container [2019-09-07 21:50:28,144 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.09 09:50:28" (3/3) ... [2019-09-07 21:50:28,152 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem17_label32.c [2019-09-07 21:50:28,169 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-07 21:50:28,179 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-07 21:50:28,198 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-07 21:50:28,251 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-07 21:50:28,251 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-07 21:50:28,252 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-07 21:50:28,252 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-07 21:50:28,252 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-07 21:50:28,252 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-07 21:50:28,252 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-07 21:50:28,252 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-07 21:50:28,253 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-07 21:50:28,295 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states. [2019-09-07 21:50:28,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2019-09-07 21:50:28,305 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 21:50:28,307 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] [2019-09-07 21:50:28,309 INFO L418 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 21:50:28,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 21:50:28,316 INFO L82 PathProgramCache]: Analyzing trace with hash -461510759, now seen corresponding path program 1 times [2019-09-07 21:50:28,318 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 21:50:28,318 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 21:50:28,359 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 21:50:28,359 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 21:50:28,359 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 21:50:28,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 21:50:28,644 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 21:50:28,647 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 21:50:28,647 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-07 21:50:28,652 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-07 21:50:28,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-07 21:50:28,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 21:50:28,671 INFO L87 Difference]: Start difference. First operand 603 states. Second operand 4 states. [2019-09-07 21:50:36,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 21:50:36,379 INFO L93 Difference]: Finished difference Result 2114 states and 3933 transitions. [2019-09-07 21:50:36,379 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-07 21:50:36,380 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2019-09-07 21:50:36,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 21:50:36,412 INFO L225 Difference]: With dead ends: 2114 [2019-09-07 21:50:36,413 INFO L226 Difference]: Without dead ends: 1432 [2019-09-07 21:50:36,430 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 21:50:36,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1432 states. [2019-09-07 21:50:36,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1432 to 977. [2019-09-07 21:50:36,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 977 states. [2019-09-07 21:50:36,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 977 states to 977 states and 1461 transitions. [2019-09-07 21:50:36,552 INFO L78 Accepts]: Start accepts. Automaton has 977 states and 1461 transitions. Word has length 54 [2019-09-07 21:50:36,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 21:50:36,553 INFO L475 AbstractCegarLoop]: Abstraction has 977 states and 1461 transitions. [2019-09-07 21:50:36,553 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-07 21:50:36,554 INFO L276 IsEmpty]: Start isEmpty. Operand 977 states and 1461 transitions. [2019-09-07 21:50:36,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2019-09-07 21:50:36,560 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 21:50:36,560 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:50:36,561 INFO L418 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 21:50:36,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 21:50:36,561 INFO L82 PathProgramCache]: Analyzing trace with hash -1192538896, now seen corresponding path program 1 times [2019-09-07 21:50:36,561 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 21:50:36,561 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 21:50:36,563 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 21:50:36,563 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 21:50:36,563 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 21:50:36,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 21:50:36,995 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 21:50:36,995 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 21:50:36,995 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2019-09-07 21:50:37,014 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 21:50:37,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 21:50:37,093 INFO L256 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 9 conjunts are in the unsatisfiable core [2019-09-07 21:50:37,103 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 21:50:37,182 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 21:50:37,183 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 21:50:37,184 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 21:50:37,188 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 21:50:37,189 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 21:50:37,190 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 21:50:37,192 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 21:50:37,193 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 21:51:01,653 WARN L188 SmtUtils]: Spent 24.35 s on a formula simplification. DAG size of input: 56 DAG size of output: 50 [2019-09-07 21:51:01,763 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 6 terms [2019-09-07 21:51:03,955 WARN L188 SmtUtils]: Spent 2.07 s on a formula simplification. DAG size of input: 98 DAG size of output: 19 [2019-09-07 21:51:04,088 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 3 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 21:51:04,097 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 21:51:04,098 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 12 [2019-09-07 21:51:04,100 INFO L454 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-09-07 21:51:04,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-09-07 21:51:04,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2019-09-07 21:51:04,101 INFO L87 Difference]: Start difference. First operand 977 states and 1461 transitions. Second operand 12 states. [2019-09-07 21:51:45,423 WARN L188 SmtUtils]: Spent 40.43 s on a formula simplification. DAG size of input: 83 DAG size of output: 76 [2019-09-07 21:52:16,422 WARN L188 SmtUtils]: Spent 26.33 s on a formula simplification that was a NOOP. DAG size: 62 [2019-09-07 21:52:56,960 WARN L188 SmtUtils]: Spent 40.41 s on a formula simplification. DAG size of input: 82 DAG size of output: 75 [2019-09-07 21:53:37,686 WARN L188 SmtUtils]: Spent 40.48 s on a formula simplification. DAG size of input: 73 DAG size of output: 66 [2019-09-07 21:54:18,234 WARN L188 SmtUtils]: Spent 40.47 s on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2019-09-07 21:54:57,007 WARN L188 SmtUtils]: Spent 38.65 s on a formula simplification. DAG size of input: 76 DAG size of output: 55 [2019-09-07 21:55:43,987 WARN L188 SmtUtils]: Spent 40.43 s on a formula simplification. DAG size of input: 70 DAG size of output: 63 [2019-09-07 21:56:24,641 WARN L188 SmtUtils]: Spent 40.41 s on a formula simplification. DAG size of input: 66 DAG size of output: 59 [2019-09-07 21:56:51,233 WARN L188 SmtUtils]: Spent 26.28 s on a formula simplification that was a NOOP. DAG size: 71 [2019-09-07 21:57:27,994 WARN L188 SmtUtils]: Spent 36.46 s on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2019-09-07 21:57:58,046 WARN L188 SmtUtils]: Spent 26.28 s on a formula simplification that was a NOOP. DAG size: 52 [2019-09-07 21:58:39,536 WARN L188 SmtUtils]: Spent 40.39 s on a formula simplification. DAG size of input: 76 DAG size of output: 69 [2019-09-07 21:59:31,351 WARN L188 SmtUtils]: Spent 40.45 s on a formula simplification. DAG size of input: 74 DAG size of output: 67 [2019-09-07 22:00:03,297 WARN L188 SmtUtils]: Spent 26.29 s on a formula simplification that was a NOOP. DAG size: 67 [2019-09-07 22:00:36,740 WARN L188 SmtUtils]: Spent 26.26 s on a formula simplification that was a NOOP. DAG size: 65 [2019-09-07 22:01:04,728 WARN L188 SmtUtils]: Spent 26.28 s on a formula simplification that was a NOOP. DAG size: 58 [2019-09-07 22:01:57,139 WARN L188 SmtUtils]: Spent 40.44 s on a formula simplification. DAG size of input: 78 DAG size of output: 71 [2019-09-07 22:02:35,100 WARN L188 SmtUtils]: Spent 26.44 s on a formula simplification. DAG size of input: 72 DAG size of output: 51 [2019-09-07 22:03:20,513 WARN L188 SmtUtils]: Spent 40.43 s on a formula simplification. DAG size of input: 79 DAG size of output: 72 [2019-09-07 22:03:29,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:03:29,629 INFO L93 Difference]: Finished difference Result 13807 states and 23692 transitions. [2019-09-07 22:03:29,630 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 74 states. [2019-09-07 22:03:29,630 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 128 [2019-09-07 22:03:29,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:03:29,741 INFO L225 Difference]: With dead ends: 13807 [2019-09-07 22:03:29,742 INFO L226 Difference]: Without dead ends: 12836 [2019-09-07 22:03:29,756 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 126 SyntacticMatches, 1 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2076 ImplicationChecksByTransitivity, 692.4s TimeCoverageRelationStatistics Valid=1165, Invalid=4535, Unknown=0, NotChecked=0, Total=5700 [2019-09-07 22:03:29,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12836 states. [2019-09-07 22:03:30,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12836 to 12581. [2019-09-07 22:03:30,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12581 states. [2019-09-07 22:03:30,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12581 states to 12581 states and 18611 transitions. [2019-09-07 22:03:30,296 INFO L78 Accepts]: Start accepts. Automaton has 12581 states and 18611 transitions. Word has length 128 [2019-09-07 22:03:30,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:03:30,306 INFO L475 AbstractCegarLoop]: Abstraction has 12581 states and 18611 transitions. [2019-09-07 22:03:30,306 INFO L476 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-09-07 22:03:30,307 INFO L276 IsEmpty]: Start isEmpty. Operand 12581 states and 18611 transitions. [2019-09-07 22:03:30,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2019-09-07 22:03:30,319 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:03:30,319 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:03:30,324 INFO L418 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:03:30,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:03:30,324 INFO L82 PathProgramCache]: Analyzing trace with hash -1380103823, now seen corresponding path program 1 times [2019-09-07 22:03:30,324 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:03:30,324 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:03:30,326 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:03:30,326 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:03:30,326 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:03:30,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:03:30,599 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-07 22:03:30,599 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 22:03:30,599 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-07 22:03:30,601 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-07 22:03:30,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-07 22:03:30,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 22:03:30,602 INFO L87 Difference]: Start difference. First operand 12581 states and 18611 transitions. Second operand 4 states. [2019-09-07 22:03:36,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:03:36,003 INFO L93 Difference]: Finished difference Result 42257 states and 66043 transitions. [2019-09-07 22:03:36,003 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-07 22:03:36,003 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 163 [2019-09-07 22:03:36,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:03:36,162 INFO L225 Difference]: With dead ends: 42257 [2019-09-07 22:03:36,162 INFO L226 Difference]: Without dead ends: 29682 [2019-09-07 22:03:36,200 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 22:03:36,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29682 states. [2019-09-07 22:03:36,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29682 to 23611. [2019-09-07 22:03:36,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23611 states. [2019-09-07 22:03:36,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23611 states to 23611 states and 36136 transitions. [2019-09-07 22:03:36,951 INFO L78 Accepts]: Start accepts. Automaton has 23611 states and 36136 transitions. Word has length 163 [2019-09-07 22:03:36,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:03:36,953 INFO L475 AbstractCegarLoop]: Abstraction has 23611 states and 36136 transitions. [2019-09-07 22:03:36,953 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-07 22:03:36,953 INFO L276 IsEmpty]: Start isEmpty. Operand 23611 states and 36136 transitions. [2019-09-07 22:03:36,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2019-09-07 22:03:36,968 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:03:36,969 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 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] [2019-09-07 22:03:36,969 INFO L418 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:03:36,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:03:36,969 INFO L82 PathProgramCache]: Analyzing trace with hash 1714822899, now seen corresponding path program 1 times [2019-09-07 22:03:36,970 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:03:36,970 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:03:36,971 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:03:36,971 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:03:36,971 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:03:37,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:03:37,881 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 94 proven. 70 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-09-07 22:03:37,882 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 22:03:37,882 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 22:03:37,906 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 22:03:37,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:03:37,988 INFO L256 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 6 conjunts are in the unsatisfiable core [2019-09-07 22:03:38,005 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 22:03:38,082 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 120 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2019-09-07 22:03:38,094 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-07 22:03:38,095 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2019-09-07 22:03:38,095 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-07 22:03:38,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-07 22:03:38,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-09-07 22:03:38,096 INFO L87 Difference]: Start difference. First operand 23611 states and 36136 transitions. Second operand 9 states. [2019-09-07 22:03:44,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:03:44,843 INFO L93 Difference]: Finished difference Result 50986 states and 78700 transitions. [2019-09-07 22:03:44,844 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-09-07 22:03:44,844 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 203 [2019-09-07 22:03:44,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:03:44,914 INFO L225 Difference]: With dead ends: 50986 [2019-09-07 22:03:44,914 INFO L226 Difference]: Without dead ends: 20610 [2019-09-07 22:03:44,972 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 210 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2019-09-07 22:03:45,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20610 states. [2019-09-07 22:03:45,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20610 to 19722. [2019-09-07 22:03:45,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19722 states. [2019-09-07 22:03:45,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19722 states to 19722 states and 23695 transitions. [2019-09-07 22:03:45,368 INFO L78 Accepts]: Start accepts. Automaton has 19722 states and 23695 transitions. Word has length 203 [2019-09-07 22:03:45,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:03:45,368 INFO L475 AbstractCegarLoop]: Abstraction has 19722 states and 23695 transitions. [2019-09-07 22:03:45,368 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-07 22:03:45,368 INFO L276 IsEmpty]: Start isEmpty. Operand 19722 states and 23695 transitions. [2019-09-07 22:03:45,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2019-09-07 22:03:45,372 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:03:45,373 INFO L399 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2019-09-07 22:03:45,373 INFO L418 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:03:45,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:03:45,373 INFO L82 PathProgramCache]: Analyzing trace with hash -747686888, now seen corresponding path program 1 times [2019-09-07 22:03:45,373 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:03:45,374 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:03:45,375 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:03:45,375 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:03:45,376 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:03:45,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:03:45,558 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2019-09-07 22:03:45,558 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-07 22:03:45,559 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-07 22:03:45,559 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-07 22:03:45,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-07 22:03:45,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-09-07 22:03:45,560 INFO L87 Difference]: Start difference. First operand 19722 states and 23695 transitions. Second operand 4 states. [2019-09-07 22:03:50,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:03:50,513 INFO L93 Difference]: Finished difference Result 58709 states and 73482 transitions. [2019-09-07 22:03:50,514 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-07 22:03:50,514 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 229 [2019-09-07 22:03:50,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:03:50,617 INFO L225 Difference]: With dead ends: 58709 [2019-09-07 22:03:50,617 INFO L226 Difference]: Without dead ends: 39426 [2019-09-07 22:03:50,652 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 22:03:50,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39426 states. [2019-09-07 22:03:51,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39426 to 32038. [2019-09-07 22:03:51,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32038 states. [2019-09-07 22:03:51,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32038 states to 32038 states and 39830 transitions. [2019-09-07 22:03:51,304 INFO L78 Accepts]: Start accepts. Automaton has 32038 states and 39830 transitions. Word has length 229 [2019-09-07 22:03:51,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:03:51,304 INFO L475 AbstractCegarLoop]: Abstraction has 32038 states and 39830 transitions. [2019-09-07 22:03:51,305 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-07 22:03:51,309 INFO L276 IsEmpty]: Start isEmpty. Operand 32038 states and 39830 transitions. [2019-09-07 22:03:51,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2019-09-07 22:03:51,316 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:03:51,316 INFO L399 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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, 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 22:03:51,317 INFO L418 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:03:51,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:03:51,317 INFO L82 PathProgramCache]: Analyzing trace with hash -1957825368, now seen corresponding path program 1 times [2019-09-07 22:03:51,317 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:03:51,317 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:03:51,319 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:03:51,319 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:03:51,320 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:03:51,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:03:51,756 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 149 proven. 142 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2019-09-07 22:03:51,757 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 22:03:51,757 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 22:03:51,779 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:03:51,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:03:51,867 INFO L256 TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 10 conjunts are in the unsatisfiable core [2019-09-07 22:03:51,882 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 22:03:51,914 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:03:51,915 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:03:52,065 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 245 proven. 2 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2019-09-07 22:03:52,070 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-07 22:03:52,071 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2019-09-07 22:03:52,077 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-09-07 22:03:52,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-09-07 22:03:52,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2019-09-07 22:03:52,080 INFO L87 Difference]: Start difference. First operand 32038 states and 39830 transitions. Second operand 10 states. [2019-09-07 22:04:06,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-07 22:04:06,424 INFO L93 Difference]: Finished difference Result 92716 states and 121872 transitions. [2019-09-07 22:04:06,425 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-09-07 22:04:06,425 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 290 [2019-09-07 22:04:06,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-07 22:04:06,691 INFO L225 Difference]: With dead ends: 92716 [2019-09-07 22:04:06,692 INFO L226 Difference]: Without dead ends: 59329 [2019-09-07 22:04:06,771 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 295 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2019-09-07 22:04:06,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59329 states. [2019-09-07 22:04:08,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59329 to 55170. [2019-09-07 22:04:08,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55170 states. [2019-09-07 22:04:08,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55170 states to 55170 states and 69250 transitions. [2019-09-07 22:04:08,329 INFO L78 Accepts]: Start accepts. Automaton has 55170 states and 69250 transitions. Word has length 290 [2019-09-07 22:04:08,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-07 22:04:08,330 INFO L475 AbstractCegarLoop]: Abstraction has 55170 states and 69250 transitions. [2019-09-07 22:04:08,330 INFO L476 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-09-07 22:04:08,330 INFO L276 IsEmpty]: Start isEmpty. Operand 55170 states and 69250 transitions. [2019-09-07 22:04:08,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 398 [2019-09-07 22:04:08,356 INFO L391 BasicCegarLoop]: Found error trace [2019-09-07 22:04:08,356 INFO L399 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:04:08,357 INFO L418 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-07 22:04:08,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-07 22:04:08,358 INFO L82 PathProgramCache]: Analyzing trace with hash 1771354210, now seen corresponding path program 1 times [2019-09-07 22:04:08,358 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-07 22:04:08,358 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-07 22:04:08,359 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:04:08,360 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:04:08,360 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-07 22:04:08,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:04:08,720 INFO L134 CoverageAnalysis]: Checked inductivity of 647 backedges. 281 proven. 147 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2019-09-07 22:04:08,720 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-07 22:04:08,720 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 22:04:09,849 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-07 22:04:09,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-07 22:04:09,969 INFO L256 TraceCheckSpWp]: Trace formula consists of 671 conjuncts, 7 conjunts are in the unsatisfiable core [2019-09-07 22:04:09,978 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-07 22:04:09,986 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:04:09,986 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:04:09,987 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:04:09,988 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:04:09,988 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:04:09,989 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:04:09,989 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:04:09,990 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:04:09,991 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:04:09,991 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:04:09,992 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:04:09,992 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:04:09,993 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:04:09,993 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:04:09,994 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:04:09,995 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:04:09,995 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:04:09,996 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:04:09,997 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:04:09,997 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:04:09,998 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:04:09,998 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:04:09,999 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:04:10,000 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:04:10,000 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:04:11,046 WARN L188 SmtUtils]: Spent 871.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 23 [2019-09-07 22:04:11,084 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:04:11,084 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:04:11,085 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:04:11,085 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:04:11,085 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:04:11,086 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:04:11,087 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:04:11,088 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:04:11,088 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:04:11,089 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:04:11,090 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:04:11,090 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:04:11,091 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:04:11,091 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:04:11,092 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:04:11,092 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:04:11,093 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:04:11,094 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:04:11,095 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:04:11,095 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:04:11,096 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:04:11,097 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:04:11,097 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:04:11,098 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:04:11,098 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-07 22:04:11,099 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms