java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data --generate-csv --csv-dir csv -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label15_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-69f5bdd-m [2018-09-18 11:29:57,966 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-09-18 11:29:57,968 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-09-18 11:29:57,980 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-09-18 11:29:57,981 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-09-18 11:29:57,982 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-09-18 11:29:57,983 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-09-18 11:29:57,985 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-09-18 11:29:57,987 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-09-18 11:29:57,987 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-09-18 11:29:57,988 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-09-18 11:29:57,989 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-09-18 11:29:57,990 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-09-18 11:29:57,991 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-09-18 11:29:57,992 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-09-18 11:29:57,993 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-09-18 11:29:57,993 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-09-18 11:29:57,995 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-09-18 11:29:57,997 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-09-18 11:29:57,999 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-09-18 11:29:58,000 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-09-18 11:29:58,001 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-09-18 11:29:58,004 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-09-18 11:29:58,004 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-09-18 11:29:58,004 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-09-18 11:29:58,005 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-09-18 11:29:58,006 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-09-18 11:29:58,007 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-09-18 11:29:58,008 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-09-18 11:29:58,009 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-09-18 11:29:58,009 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-09-18 11:29:58,010 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-09-18 11:29:58,010 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-09-18 11:29:58,011 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-09-18 11:29:58,012 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-09-18 11:29:58,012 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-09-18 11:29:58,013 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/taipanbench/svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf [2018-09-18 11:29:58,028 INFO L110 SettingsManager]: Loading preferences was successful [2018-09-18 11:29:58,028 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-09-18 11:29:58,029 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-09-18 11:29:58,029 INFO L133 SettingsManager]: * User list type=DISABLED [2018-09-18 11:29:58,029 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-09-18 11:29:58,030 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-09-18 11:29:58,030 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-09-18 11:29:58,030 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-09-18 11:29:58,030 INFO L133 SettingsManager]: * Log string format=TERM [2018-09-18 11:29:58,030 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-09-18 11:29:58,031 INFO L133 SettingsManager]: * Parallel states before merging=1 [2018-09-18 11:29:58,031 INFO L133 SettingsManager]: * Interval Domain=false [2018-09-18 11:29:58,032 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-09-18 11:29:58,032 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-09-18 11:29:58,032 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-09-18 11:29:58,032 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-09-18 11:29:58,032 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-09-18 11:29:58,033 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-09-18 11:29:58,033 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-09-18 11:29:58,033 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-09-18 11:29:58,033 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-09-18 11:29:58,033 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-09-18 11:29:58,033 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-09-18 11:29:58,034 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-09-18 11:29:58,034 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-09-18 11:29:58,034 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-09-18 11:29:58,034 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-09-18 11:29:58,034 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-09-18 11:29:58,035 INFO L133 SettingsManager]: * Trace refinement strategy=RUBBER_TAIPAN [2018-09-18 11:29:58,035 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-09-18 11:29:58,035 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-09-18 11:29:58,035 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-09-18 11:29:58,035 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-09-18 11:29:58,036 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-09-18 11:29:58,085 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-09-18 11:29:58,099 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-09-18 11:29:58,103 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-09-18 11:29:58,105 INFO L271 PluginConnector]: Initializing CDTParser... [2018-09-18 11:29:58,106 INFO L276 PluginConnector]: CDTParser initialized [2018-09-18 11:29:58,106 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label15_true-unreach-call.c [2018-09-18 11:29:58,449 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e37a4326d/bf1a8b9251e6419a8ad2822ac8217bc0/FLAG46eb54aa9 [2018-09-18 11:29:58,942 INFO L277 CDTParser]: Found 1 translation units. [2018-09-18 11:29:58,943 INFO L159 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label15_true-unreach-call.c [2018-09-18 11:29:58,984 INFO L325 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e37a4326d/bf1a8b9251e6419a8ad2822ac8217bc0/FLAG46eb54aa9 [2018-09-18 11:29:59,009 INFO L333 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e37a4326d/bf1a8b9251e6419a8ad2822ac8217bc0 [2018-09-18 11:29:59,020 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-09-18 11:29:59,024 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-09-18 11:29:59,025 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-09-18 11:29:59,026 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-09-18 11:29:59,034 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-09-18 11:29:59,035 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 11:29:59" (1/1) ... [2018-09-18 11:29:59,039 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72ea9e45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:29:59, skipping insertion in model container [2018-09-18 11:29:59,040 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.09 11:29:59" (1/1) ... [2018-09-18 11:29:59,056 INFO L160 ieTranslatorObserver]: Starting translation in SV-COMP mode [2018-09-18 11:30:00,370 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 11:30:00,390 INFO L424 MainDispatcher]: Starting main dispatcher in SV-COMP mode [2018-09-18 11:30:00,964 INFO L170 PostProcessor]: Settings: Checked method=main [2018-09-18 11:30:01,216 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:30:01 WrapperNode [2018-09-18 11:30:01,217 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-09-18 11:30:01,218 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-09-18 11:30:01,218 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-09-18 11:30:01,218 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-09-18 11:30:01,230 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:30:01" (1/1) ... [2018-09-18 11:30:01,329 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:30:01" (1/1) ... [2018-09-18 11:30:01,479 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-09-18 11:30:01,479 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-09-18 11:30:01,480 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-09-18 11:30:01,480 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-09-18 11:30:02,066 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:30:01" (1/1) ... [2018-09-18 11:30:02,066 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:30:01" (1/1) ... [2018-09-18 11:30:02,108 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:30:01" (1/1) ... [2018-09-18 11:30:02,108 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:30:01" (1/1) ... [2018-09-18 11:30:02,227 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:30:01" (1/1) ... [2018-09-18 11:30:02,269 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:30:01" (1/1) ... [2018-09-18 11:30:02,322 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:30:01" (1/1) ... [2018-09-18 11:30:02,377 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-09-18 11:30:02,378 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-09-18 11:30:02,378 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-09-18 11:30:02,379 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-09-18 11:30:02,380 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:30:01" (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 [2018-09-18 11:30:02,464 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-09-18 11:30:02,465 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-09-18 11:30:02,465 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-09-18 11:30:02,465 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-09-18 11:30:02,465 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-09-18 11:30:02,465 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-09-18 11:30:02,466 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-09-18 11:30:02,466 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-09-18 11:30:02,466 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-09-18 11:30:02,466 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-09-18 11:30:02,467 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-09-18 11:30:02,467 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-09-18 11:30:02,467 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-09-18 11:30:02,467 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-09-18 11:30:14,683 INFO L356 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-09-18 11:30:14,684 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 11:30:14 BoogieIcfgContainer [2018-09-18 11:30:14,684 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-09-18 11:30:14,685 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-09-18 11:30:14,685 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-09-18 11:30:14,689 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-09-18 11:30:14,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.09 11:29:59" (1/3) ... [2018-09-18 11:30:14,690 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e8a5df2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 11:30:14, skipping insertion in model container [2018-09-18 11:30:14,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.09 11:30:01" (2/3) ... [2018-09-18 11:30:14,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e8a5df2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.09 11:30:14, skipping insertion in model container [2018-09-18 11:30:14,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.09 11:30:14" (3/3) ... [2018-09-18 11:30:14,693 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label15_true-unreach-call.c [2018-09-18 11:30:14,702 INFO L137 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-09-18 11:30:14,710 INFO L149 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-09-18 11:30:14,781 INFO L130 ementStrategyFactory]: Using default assertion order modulation [2018-09-18 11:30:14,782 INFO L381 AbstractCegarLoop]: Interprodecural is true [2018-09-18 11:30:14,782 INFO L382 AbstractCegarLoop]: Hoare is true [2018-09-18 11:30:14,782 INFO L383 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-09-18 11:30:14,782 INFO L384 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-09-18 11:30:14,782 INFO L385 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-09-18 11:30:14,782 INFO L386 AbstractCegarLoop]: Difference is false [2018-09-18 11:30:14,783 INFO L387 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-09-18 11:30:14,783 INFO L392 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-09-18 11:30:14,835 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-09-18 11:30:14,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-09-18 11:30:14,846 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:30:14,847 INFO L376 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:30:14,848 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:30:14,854 INFO L82 PathProgramCache]: Analyzing trace with hash 394736435, now seen corresponding path program 1 times [2018-09-18 11:30:14,857 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:30:14,905 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:30:14,905 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:30:14,905 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:30:14,906 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:30:15,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:30:15,370 WARN L178 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 11:30:15,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:30:15,486 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:30:15,486 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-09-18 11:30:15,487 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:30:15,493 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-09-18 11:30:15,511 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-09-18 11:30:15,511 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 11:30:15,514 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-09-18 11:30:25,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:30:25,478 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-09-18 11:30:25,479 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-09-18 11:30:25,481 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 61 [2018-09-18 11:30:25,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:30:25,529 INFO L225 Difference]: With dead ends: 2446 [2018-09-18 11:30:25,529 INFO L226 Difference]: Without dead ends: 1604 [2018-09-18 11:30:25,545 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-09-18 11:30:25,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-09-18 11:30:25,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-09-18 11:30:25,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-09-18 11:30:25,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2909 transitions. [2018-09-18 11:30:25,745 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2909 transitions. Word has length 61 [2018-09-18 11:30:25,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:30:25,746 INFO L480 AbstractCegarLoop]: Abstraction has 1604 states and 2909 transitions. [2018-09-18 11:30:25,746 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-09-18 11:30:25,747 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2909 transitions. [2018-09-18 11:30:25,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-09-18 11:30:25,762 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:30:25,763 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:30:25,763 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:30:25,765 INFO L82 PathProgramCache]: Analyzing trace with hash -2085230804, now seen corresponding path program 1 times [2018-09-18 11:30:25,765 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:30:25,766 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:30:25,767 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:30:25,767 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:30:25,767 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:30:25,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:30:26,102 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:30:26,103 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:30:26,103 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-09-18 11:30:26,103 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:30:26,105 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 11:30:26,105 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 11:30:26,105 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-09-18 11:30:26,106 INFO L87 Difference]: Start difference. First operand 1604 states and 2909 transitions. Second operand 5 states. [2018-09-18 11:30:36,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:30:36,686 INFO L93 Difference]: Finished difference Result 4818 states and 8826 transitions. [2018-09-18 11:30:36,687 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 11:30:36,687 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 135 [2018-09-18 11:30:36,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:30:36,710 INFO L225 Difference]: With dead ends: 4818 [2018-09-18 11:30:36,711 INFO L226 Difference]: Without dead ends: 3220 [2018-09-18 11:30:36,717 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-09-18 11:30:36,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3220 states. [2018-09-18 11:30:36,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3220 to 3186. [2018-09-18 11:30:36,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3186 states. [2018-09-18 11:30:36,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3186 states to 3186 states and 5594 transitions. [2018-09-18 11:30:36,819 INFO L78 Accepts]: Start accepts. Automaton has 3186 states and 5594 transitions. Word has length 135 [2018-09-18 11:30:36,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:30:36,819 INFO L480 AbstractCegarLoop]: Abstraction has 3186 states and 5594 transitions. [2018-09-18 11:30:36,821 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 11:30:36,821 INFO L276 IsEmpty]: Start isEmpty. Operand 3186 states and 5594 transitions. [2018-09-18 11:30:36,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2018-09-18 11:30:36,830 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:30:36,831 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:30:36,831 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:30:36,831 INFO L82 PathProgramCache]: Analyzing trace with hash -1091528155, now seen corresponding path program 1 times [2018-09-18 11:30:36,832 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:30:36,832 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:30:36,833 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:30:36,833 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:30:36,833 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:30:36,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:30:37,139 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:30:37,140 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:30:37,140 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-18 11:30:37,140 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:30:37,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 11:30:37,141 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 11:30:37,141 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-18 11:30:37,142 INFO L87 Difference]: Start difference. First operand 3186 states and 5594 transitions. Second operand 6 states. [2018-09-18 11:30:50,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:30:50,161 INFO L93 Difference]: Finished difference Result 11148 states and 19850 transitions. [2018-09-18 11:30:50,161 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 11:30:50,161 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 140 [2018-09-18 11:30:50,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:30:50,217 INFO L225 Difference]: With dead ends: 11148 [2018-09-18 11:30:50,217 INFO L226 Difference]: Without dead ends: 7968 [2018-09-18 11:30:50,235 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-18 11:30:50,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7968 states. [2018-09-18 11:30:50,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7968 to 7924. [2018-09-18 11:30:50,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7924 states. [2018-09-18 11:30:50,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7924 states to 7924 states and 13424 transitions. [2018-09-18 11:30:50,439 INFO L78 Accepts]: Start accepts. Automaton has 7924 states and 13424 transitions. Word has length 140 [2018-09-18 11:30:50,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:30:50,439 INFO L480 AbstractCegarLoop]: Abstraction has 7924 states and 13424 transitions. [2018-09-18 11:30:50,439 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 11:30:50,439 INFO L276 IsEmpty]: Start isEmpty. Operand 7924 states and 13424 transitions. [2018-09-18 11:30:50,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-09-18 11:30:50,442 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:30:50,443 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:30:50,443 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:30:50,443 INFO L82 PathProgramCache]: Analyzing trace with hash 266956725, now seen corresponding path program 1 times [2018-09-18 11:30:50,443 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:30:50,444 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:30:50,444 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:30:50,444 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:30:50,445 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:30:50,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:30:50,904 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:30:50,904 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:30:50,904 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-18 11:30:50,905 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:30:50,905 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 11:30:50,905 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 11:30:50,906 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-18 11:30:50,906 INFO L87 Difference]: Start difference. First operand 7924 states and 13424 transitions. Second operand 6 states. [2018-09-18 11:31:00,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:31:00,460 INFO L93 Difference]: Finished difference Result 22224 states and 38004 transitions. [2018-09-18 11:31:00,460 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 11:31:00,461 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 148 [2018-09-18 11:31:00,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:31:00,536 INFO L225 Difference]: With dead ends: 22224 [2018-09-18 11:31:00,537 INFO L226 Difference]: Without dead ends: 14306 [2018-09-18 11:31:00,576 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-18 11:31:00,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14306 states. [2018-09-18 11:31:00,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14306 to 14219. [2018-09-18 11:31:00,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14219 states. [2018-09-18 11:31:00,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14219 states to 14219 states and 21550 transitions. [2018-09-18 11:31:00,940 INFO L78 Accepts]: Start accepts. Automaton has 14219 states and 21550 transitions. Word has length 148 [2018-09-18 11:31:00,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:31:00,940 INFO L480 AbstractCegarLoop]: Abstraction has 14219 states and 21550 transitions. [2018-09-18 11:31:00,940 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 11:31:00,940 INFO L276 IsEmpty]: Start isEmpty. Operand 14219 states and 21550 transitions. [2018-09-18 11:31:00,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2018-09-18 11:31:00,948 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:31:00,948 INFO L376 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:31:00,948 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:31:00,952 INFO L82 PathProgramCache]: Analyzing trace with hash -1611009688, now seen corresponding path program 1 times [2018-09-18 11:31:00,952 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:31:00,954 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:31:00,954 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:31:00,954 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:31:00,954 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:31:00,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:31:01,237 WARN L178 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-09-18 11:31:01,390 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:31:01,390 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-09-18 11:31:01,390 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-09-18 11:31:01,390 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:31:01,391 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-09-18 11:31:01,391 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-09-18 11:31:01,391 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-09-18 11:31:01,391 INFO L87 Difference]: Start difference. First operand 14219 states and 21550 transitions. Second operand 6 states. [2018-09-18 11:31:13,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:31:13,527 INFO L93 Difference]: Finished difference Result 35956 states and 55845 transitions. [2018-09-18 11:31:13,529 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-09-18 11:31:13,530 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 181 [2018-09-18 11:31:13,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:31:13,612 INFO L225 Difference]: With dead ends: 35956 [2018-09-18 11:31:13,612 INFO L226 Difference]: Without dead ends: 21743 [2018-09-18 11:31:13,669 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-09-18 11:31:13,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21743 states. [2018-09-18 11:31:14,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21743 to 21651. [2018-09-18 11:31:14,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21651 states. [2018-09-18 11:31:14,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21651 states to 21651 states and 30247 transitions. [2018-09-18 11:31:14,182 INFO L78 Accepts]: Start accepts. Automaton has 21651 states and 30247 transitions. Word has length 181 [2018-09-18 11:31:14,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:31:14,183 INFO L480 AbstractCegarLoop]: Abstraction has 21651 states and 30247 transitions. [2018-09-18 11:31:14,183 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-09-18 11:31:14,183 INFO L276 IsEmpty]: Start isEmpty. Operand 21651 states and 30247 transitions. [2018-09-18 11:31:14,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2018-09-18 11:31:14,199 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:31:14,200 INFO L376 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:31:14,200 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:31:14,200 INFO L82 PathProgramCache]: Analyzing trace with hash -849945464, now seen corresponding path program 1 times [2018-09-18 11:31:14,200 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:31:14,201 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:31:14,201 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:31:14,201 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:31:14,202 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:31:14,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:31:14,875 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 111 proven. 67 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2018-09-18 11:31:14,875 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:31:14,876 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG 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 [2018-09-18 11:31:14,894 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:31:14,895 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:31:15,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:31:15,055 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:31:15,567 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 182 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:31:15,567 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:31:16,382 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 182 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:31:16,413 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:31:16,413 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 11:31:16,432 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:31:16,432 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:31:16,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:31:16,606 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:31:17,278 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 182 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:31:17,279 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:31:17,784 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 182 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:31:17,786 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 11:31:17,786 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 16 [2018-09-18 11:31:17,786 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 11:31:17,787 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 11:31:17,788 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 11:31:17,788 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2018-09-18 11:31:17,788 INFO L87 Difference]: Start difference. First operand 21651 states and 30247 transitions. Second operand 9 states. [2018-09-18 11:31:20,472 WARN L178 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 6 [2018-09-18 11:31:38,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:31:38,431 INFO L93 Difference]: Finished difference Result 66713 states and 105908 transitions. [2018-09-18 11:31:38,432 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-09-18 11:31:38,432 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 232 [2018-09-18 11:31:38,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:31:38,718 INFO L225 Difference]: With dead ends: 66713 [2018-09-18 11:31:38,719 INFO L226 Difference]: Without dead ends: 45068 [2018-09-18 11:31:38,841 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 979 GetRequests, 938 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 363 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=359, Invalid=1281, Unknown=0, NotChecked=0, Total=1640 [2018-09-18 11:31:38,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45068 states. [2018-09-18 11:31:40,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45068 to 44019. [2018-09-18 11:31:40,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44019 states. [2018-09-18 11:31:40,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44019 states to 44019 states and 57466 transitions. [2018-09-18 11:31:40,220 INFO L78 Accepts]: Start accepts. Automaton has 44019 states and 57466 transitions. Word has length 232 [2018-09-18 11:31:40,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:31:40,220 INFO L480 AbstractCegarLoop]: Abstraction has 44019 states and 57466 transitions. [2018-09-18 11:31:40,220 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-18 11:31:40,220 INFO L276 IsEmpty]: Start isEmpty. Operand 44019 states and 57466 transitions. [2018-09-18 11:31:40,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2018-09-18 11:31:40,237 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:31:40,237 INFO L376 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:31:40,238 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:31:40,238 INFO L82 PathProgramCache]: Analyzing trace with hash -1793805499, now seen corresponding path program 1 times [2018-09-18 11:31:40,238 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:31:40,239 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:31:40,239 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:31:40,239 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:31:40,239 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:31:40,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:31:40,620 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 108 proven. 69 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 11:31:40,620 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:31:40,620 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG 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 [2018-09-18 11:31:40,639 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:31:40,639 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:31:40,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:31:40,739 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:31:40,943 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2018-09-18 11:31:40,944 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:31:41,244 WARN L178 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-09-18 11:31:42,080 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 108 proven. 69 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 11:31:42,102 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 11:31:42,102 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 8 [2018-09-18 11:31:42,102 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:31:42,103 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 11:31:42,103 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 11:31:42,103 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-09-18 11:31:42,104 INFO L87 Difference]: Start difference. First operand 44019 states and 57466 transitions. Second operand 5 states. [2018-09-18 11:31:58,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:31:58,850 INFO L93 Difference]: Finished difference Result 133728 states and 183387 transitions. [2018-09-18 11:31:58,850 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-09-18 11:31:58,850 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 257 [2018-09-18 11:31:58,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:31:59,125 INFO L225 Difference]: With dead ends: 133728 [2018-09-18 11:31:59,125 INFO L226 Difference]: Without dead ends: 89715 [2018-09-18 11:31:59,242 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 522 GetRequests, 512 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2018-09-18 11:31:59,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89715 states. [2018-09-18 11:32:01,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89715 to 86846. [2018-09-18 11:32:01,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86846 states. [2018-09-18 11:32:01,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86846 states to 86846 states and 110616 transitions. [2018-09-18 11:32:01,574 INFO L78 Accepts]: Start accepts. Automaton has 86846 states and 110616 transitions. Word has length 257 [2018-09-18 11:32:01,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:32:01,574 INFO L480 AbstractCegarLoop]: Abstraction has 86846 states and 110616 transitions. [2018-09-18 11:32:01,574 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 11:32:01,574 INFO L276 IsEmpty]: Start isEmpty. Operand 86846 states and 110616 transitions. [2018-09-18 11:32:01,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2018-09-18 11:32:01,588 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:32:01,588 INFO L376 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:32:01,589 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:32:01,589 INFO L82 PathProgramCache]: Analyzing trace with hash 342640970, now seen corresponding path program 1 times [2018-09-18 11:32:01,589 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:32:01,590 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:32:01,590 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:32:01,590 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:32:01,590 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:32:01,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:32:02,392 WARN L178 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-09-18 11:32:02,474 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 9 proven. 102 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2018-09-18 11:32:02,474 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:32:02,474 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG 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 [2018-09-18 11:32:02,490 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:32:02,490 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:32:02,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:32:02,590 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:32:03,573 WARN L178 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 16 [2018-09-18 11:32:03,734 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 127 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2018-09-18 11:32:03,734 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:32:03,981 WARN L178 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2018-09-18 11:32:04,180 WARN L178 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 41 [2018-09-18 11:32:04,308 WARN L178 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 41 [2018-09-18 11:32:05,146 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 108 proven. 69 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-09-18 11:32:05,167 INFO L313 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-09-18 11:32:05,167 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 5] total 12 [2018-09-18 11:32:05,167 INFO L265 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-09-18 11:32:05,168 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-09-18 11:32:05,168 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-09-18 11:32:05,168 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2018-09-18 11:32:05,168 INFO L87 Difference]: Start difference. First operand 86846 states and 110616 transitions. Second operand 5 states. [2018-09-18 11:32:22,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:32:22,817 INFO L93 Difference]: Finished difference Result 193847 states and 248076 transitions. [2018-09-18 11:32:22,817 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-09-18 11:32:22,817 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 284 [2018-09-18 11:32:22,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:32:23,155 INFO L225 Difference]: With dead ends: 193847 [2018-09-18 11:32:23,155 INFO L226 Difference]: Without dead ends: 107007 [2018-09-18 11:32:23,315 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 582 GetRequests, 566 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2018-09-18 11:32:23,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107007 states. [2018-09-18 11:32:25,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107007 to 105171. [2018-09-18 11:32:25,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105171 states. [2018-09-18 11:32:26,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105171 states to 105171 states and 129985 transitions. [2018-09-18 11:32:26,075 INFO L78 Accepts]: Start accepts. Automaton has 105171 states and 129985 transitions. Word has length 284 [2018-09-18 11:32:26,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:32:26,075 INFO L480 AbstractCegarLoop]: Abstraction has 105171 states and 129985 transitions. [2018-09-18 11:32:26,075 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-09-18 11:32:26,075 INFO L276 IsEmpty]: Start isEmpty. Operand 105171 states and 129985 transitions. [2018-09-18 11:32:26,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2018-09-18 11:32:26,096 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:32:26,096 INFO L376 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-09-18 11:32:26,096 INFO L423 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:32:26,097 INFO L82 PathProgramCache]: Analyzing trace with hash 1509288900, now seen corresponding path program 1 times [2018-09-18 11:32:26,097 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:32:26,098 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:32:26,098 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:32:26,098 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:32:26,098 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:32:26,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:32:26,457 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 182 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:32:26,457 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:32:26,457 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:32:26,465 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:32:26,466 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:32:26,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:32:26,565 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:32:26,684 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 182 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:32:26,685 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:32:26,917 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 182 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:32:26,938 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:32:26,938 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 11:32:26,954 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:32:26,954 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:32:27,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:32:27,182 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:32:27,446 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 182 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:32:27,446 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:32:28,040 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 182 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-09-18 11:32:28,042 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 11:32:28,043 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-09-18 11:32:28,043 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 11:32:28,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 11:32:28,044 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 11:32:28,044 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-09-18 11:32:28,044 INFO L87 Difference]: Start difference. First operand 105171 states and 129985 transitions. Second operand 9 states. [2018-09-18 11:32:43,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:32:43,046 INFO L93 Difference]: Finished difference Result 225940 states and 306148 transitions. [2018-09-18 11:32:43,047 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-09-18 11:32:43,047 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 342 [2018-09-18 11:32:43,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:32:43,466 INFO L225 Difference]: With dead ends: 225940 [2018-09-18 11:32:43,466 INFO L226 Difference]: Without dead ends: 104074 [2018-09-18 11:32:43,725 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1384 GetRequests, 1364 SyntacticMatches, 4 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=102, Invalid=204, Unknown=0, NotChecked=0, Total=306 [2018-09-18 11:32:43,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104074 states. [2018-09-18 11:32:46,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104074 to 96524. [2018-09-18 11:32:46,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96524 states. [2018-09-18 11:32:46,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96524 states to 96524 states and 124695 transitions. [2018-09-18 11:32:46,359 INFO L78 Accepts]: Start accepts. Automaton has 96524 states and 124695 transitions. Word has length 342 [2018-09-18 11:32:46,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:32:46,359 INFO L480 AbstractCegarLoop]: Abstraction has 96524 states and 124695 transitions. [2018-09-18 11:32:46,359 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-09-18 11:32:46,359 INFO L276 IsEmpty]: Start isEmpty. Operand 96524 states and 124695 transitions. [2018-09-18 11:32:46,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 404 [2018-09-18 11:32:46,386 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:32:46,386 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-18 11:32:46,387 INFO L423 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:32:46,387 INFO L82 PathProgramCache]: Analyzing trace with hash -653845554, now seen corresponding path program 1 times [2018-09-18 11:32:46,387 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:32:46,388 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:32:46,388 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:32:46,388 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:32:46,388 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:32:46,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:32:47,194 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 232 proven. 133 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2018-09-18 11:32:47,194 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:32:47,194 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG 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) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:32:47,202 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:32:47,202 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:32:47,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:32:47,319 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:32:47,526 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 375 proven. 2 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2018-09-18 11:32:47,527 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:32:48,817 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 287 proven. 73 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-09-18 11:32:48,838 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:32:48,839 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 11:32:48,858 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:32:48,858 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:32:49,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:32:49,129 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:32:49,397 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 375 proven. 2 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2018-09-18 11:32:49,398 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:32:49,673 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 287 proven. 73 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-09-18 11:32:49,675 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 11:32:49,676 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5, 5, 5, 5] total 18 [2018-09-18 11:32:49,676 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 11:32:49,677 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-09-18 11:32:49,678 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-09-18 11:32:49,678 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2018-09-18 11:32:49,678 INFO L87 Difference]: Start difference. First operand 96524 states and 124695 transitions. Second operand 15 states. [2018-09-18 11:33:33,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-09-18 11:33:33,647 INFO L93 Difference]: Finished difference Result 253019 states and 356798 transitions. [2018-09-18 11:33:33,648 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-09-18 11:33:33,648 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 403 [2018-09-18 11:33:33,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-09-18 11:33:34,290 INFO L225 Difference]: With dead ends: 253019 [2018-09-18 11:33:34,290 INFO L226 Difference]: Without dead ends: 154904 [2018-09-18 11:33:34,601 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1663 GetRequests, 1619 SyntacticMatches, 7 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 324 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=331, Invalid=1151, Unknown=0, NotChecked=0, Total=1482 [2018-09-18 11:33:34,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154904 states. [2018-09-18 11:33:37,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154904 to 152110. [2018-09-18 11:33:37,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152110 states. [2018-09-18 11:33:37,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152110 states to 152110 states and 198438 transitions. [2018-09-18 11:33:37,793 INFO L78 Accepts]: Start accepts. Automaton has 152110 states and 198438 transitions. Word has length 403 [2018-09-18 11:33:37,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-09-18 11:33:37,794 INFO L480 AbstractCegarLoop]: Abstraction has 152110 states and 198438 transitions. [2018-09-18 11:33:37,794 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-09-18 11:33:37,794 INFO L276 IsEmpty]: Start isEmpty. Operand 152110 states and 198438 transitions. [2018-09-18 11:33:37,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 507 [2018-09-18 11:33:37,856 INFO L368 BasicCegarLoop]: Found error trace [2018-09-18 11:33:37,857 INFO L376 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-09-18 11:33:37,857 INFO L423 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-09-18 11:33:37,858 INFO L82 PathProgramCache]: Analyzing trace with hash -1309981481, now seen corresponding path program 1 times [2018-09-18 11:33:37,858 INFO L69 tionRefinementEngine]: Using refinement strategy RubberTaipanRefinementStrategy [2018-09-18 11:33:37,858 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:33:37,859 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:33:37,859 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-09-18 11:33:37,859 INFO L295 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-09-18 11:33:37,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:33:39,153 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 403 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-09-18 11:33:39,153 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:33:39,153 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-09-18 11:33:39,162 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:33:39,162 INFO L295 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:33:39,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:33:39,317 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:33:39,597 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 403 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-09-18 11:33:39,597 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-09-18 11:33:40,022 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 403 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-09-18 11:33:40,044 INFO L301 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-09-18 11:33:40,044 INFO L197 anRefinementStrategy]: Switched to InterpolantGenerator mode CVC4_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4nyu Starting monitored process 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk --tlimit-per=12000 [2018-09-18 11:33:40,061 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-09-18 11:33:40,061 INFO L295 anRefinementStrategy]: Using traceCheck mode CVC4_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-09-18 11:33:40,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-09-18 11:33:40,387 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-09-18 11:33:40,563 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 403 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-09-18 11:33:40,563 INFO L316 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2018-09-18 11:33:44,780 INFO L134 CoverageAnalysis]: Checked inductivity of 492 backedges. 403 proven. 2 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2018-09-18 11:33:44,782 INFO L313 seRefinementStrategy]: Constructing automaton from 0 perfect and 5 imperfect interpolant sequences. [2018-09-18 11:33:44,783 INFO L328 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5, 5, 5] total 12 [2018-09-18 11:33:44,783 INFO L258 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-09-18 11:33:44,784 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-09-18 11:33:44,784 INFO L147 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-09-18 11:33:44,784 INFO L148 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2018-09-18 11:33:44,785 INFO L87 Difference]: Start difference. First operand 152110 states and 198438 transitions. Second operand 9 states. [2018-09-18 11:33:44,786 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-09-18 11:33:44,786 WARN L549 AbstractCegarLoop]: Verification canceled [2018-09-18 11:33:44,791 WARN L206 ceAbstractionStarter]: Timeout [2018-09-18 11:33:44,791 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.09 11:33:44 BoogieIcfgContainer [2018-09-18 11:33:44,791 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-09-18 11:33:44,792 INFO L168 Benchmark]: Toolchain (without parser) took 225771.46 ms. Allocated memory was 1.5 GB in the beginning and 4.2 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 3.4 GB in the end (delta: -2.0 GB). Peak memory consumption was 671.0 MB. Max. memory is 7.1 GB. [2018-09-18 11:33:44,793 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-09-18 11:33:44,794 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2191.80 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-09-18 11:33:44,794 INFO L168 Benchmark]: Boogie Procedure Inliner took 261.19 ms. Allocated memory is still 1.5 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 32.2 MB). Peak memory consumption was 32.2 MB. Max. memory is 7.1 GB. [2018-09-18 11:33:44,795 INFO L168 Benchmark]: Boogie Preprocessor took 898.32 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 914.9 MB). Free memory was 1.1 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 127.9 MB. Max. memory is 7.1 GB. [2018-09-18 11:33:44,796 INFO L168 Benchmark]: RCFGBuilder took 12305.96 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 1.6 GB in the end (delta: 652.8 MB). Peak memory consumption was 652.8 MB. Max. memory is 7.1 GB. [2018-09-18 11:33:44,797 INFO L168 Benchmark]: TraceAbstraction took 210106.07 ms. Allocated memory was 2.4 GB in the beginning and 4.2 GB in the end (delta: 1.8 GB). Free memory was 1.6 GB in the beginning and 3.4 GB in the end (delta: -1.8 GB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2018-09-18 11:33:44,802 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2191.80 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 261.19 ms. Allocated memory is still 1.5 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 32.2 MB). Peak memory consumption was 32.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 898.32 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 914.9 MB). Free memory was 1.1 GB in the beginning and 2.3 GB in the end (delta: -1.2 GB). Peak memory consumption was 127.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 12305.96 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 1.6 GB in the end (delta: 652.8 MB). Peak memory consumption was 652.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 210106.07 ms. Allocated memory was 2.4 GB in the beginning and 4.2 GB in the end (delta: 1.8 GB). Free memory was 1.6 GB in the beginning and 3.4 GB in the end (delta: -1.8 GB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 174]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 174). Cancelled while BasicCegarLoop was constructing difference of abstraction (152110states) and FLOYD_HOARE automaton (currently 2 states, 9 states before enhancement), while ReachableStatesComputation was computing reachable states (1 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 840 locations, 1 error locations. TIMEOUT Result, 210.0s OverallTime, 11 OverallIterations, 4 TraceHistogramMax, 172.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1582 SDtfs, 45288 SDslu, 3220 SDs, 0 SdLazy, 99131 SolverSat, 17791 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 137.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 7202 GetRequests, 7023 SyntacticMatches, 26 SemanticMatches, 153 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 849 ImplicationChecksByTransitivity, 9.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=152110occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 13.6s AutomataMinimizationTime, 10 MinimizatonAttempts, 16355 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.3s SsaConstructionTime, 1.8s SatisfiabilityAnalysisTime, 19.1s InterpolantComputationTime, 6196 NumberOfCodeBlocks, 6196 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 9672 ConstructedInterpolants, 0 QuantifiedInterpolants, 13944639 SizeOfPredicates, 5 NumberOfNonLiveVariables, 5816 ConjunctsInSsa, 69 ConjunctsInUnsatCore, 31 InterpolantComputations, 7 PerfectInterpolantSequences, 7081/7768 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem12_label15_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-Benchmark-0-2018-09-18_11-33-44-817.csv Written .csv to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/csv/Problem12_label15_true-unreach-call.c_svcomp-Reach-64bit-RubberTaipan_Default-OldIcfg.epf_AutomizerCInline.xml/Csv-TraceAbstractionBenchmarks-0-2018-09-18_11-33-44-817.csv Completed graceful shutdown