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 -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label25_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 16:23:08,886 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 16:23:08,888 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 16:23:08,904 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 16:23:08,904 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 16:23:08,906 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 16:23:08,908 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 16:23:08,910 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 16:23:08,913 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 16:23:08,914 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 16:23:08,915 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 16:23:08,916 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 16:23:08,916 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 16:23:08,917 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 16:23:08,919 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 16:23:08,919 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 16:23:08,920 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 16:23:08,922 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 16:23:08,924 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 16:23:08,926 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 16:23:08,927 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 16:23:08,928 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 16:23:08,931 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 16:23:08,931 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 16:23:08,931 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 16:23:08,932 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 16:23:08,933 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 16:23:08,934 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 16:23:08,937 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 16:23:08,939 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 16:23:08,940 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 16:23:08,941 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-11-12 16:23:08,946 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-12 16:23:08,973 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 16:23:08,974 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 16:23:08,975 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 16:23:08,976 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 16:23:08,976 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 16:23:08,976 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 16:23:08,976 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 16:23:08,976 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 16:23:08,977 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 16:23:08,977 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 16:23:08,977 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 16:23:08,977 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 16:23:08,977 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 16:23:08,979 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 16:23:08,979 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 16:23:08,979 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 16:23:08,979 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 16:23:08,979 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 16:23:08,981 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 16:23:08,981 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 16:23:08,982 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 16:23:08,982 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 16:23:08,982 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 16:23:08,982 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 16:23:08,982 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 16:23:08,983 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 16:23:08,983 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 16:23:08,983 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 16:23:08,984 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 16:23:08,984 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 16:23:08,984 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 16:23:08,984 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 16:23:08,984 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 16:23:08,985 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 16:23:08,985 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 16:23:09,060 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 16:23:09,075 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 16:23:09,080 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 16:23:09,081 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 16:23:09,082 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 16:23:09,083 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label25_false-unreach-call.c [2018-11-12 16:23:09,149 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3cbc9e22/b48af251f76f43fb85c684d288d3057c/FLAG2ba94cac6 [2018-11-12 16:23:09,937 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 16:23:09,938 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label25_false-unreach-call.c [2018-11-12 16:23:09,975 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3cbc9e22/b48af251f76f43fb85c684d288d3057c/FLAG2ba94cac6 [2018-11-12 16:23:09,993 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c3cbc9e22/b48af251f76f43fb85c684d288d3057c [2018-11-12 16:23:10,006 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 16:23:10,008 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 16:23:10,010 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 16:23:10,010 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 16:23:10,017 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 16:23:10,018 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:23:09" (1/1) ... [2018-11-12 16:23:10,022 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@403c8f9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:23:10, skipping insertion in model container [2018-11-12 16:23:10,023 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 04:23:09" (1/1) ... [2018-11-12 16:23:10,034 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 16:23:10,244 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 16:23:11,739 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 16:23:11,743 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 16:23:12,434 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 16:23:12,476 INFO L193 MainTranslator]: Completed translation [2018-11-12 16:23:12,477 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:23:12 WrapperNode [2018-11-12 16:23:12,477 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 16:23:12,479 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 16:23:12,479 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 16:23:12,479 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 16:23:12,766 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:23:12" (1/1) ... [2018-11-12 16:23:12,839 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:23:12" (1/1) ... [2018-11-12 16:23:12,850 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 16:23:12,851 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 16:23:12,851 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 16:23:12,851 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 16:23:12,863 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:23:12" (1/1) ... [2018-11-12 16:23:12,863 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:23:12" (1/1) ... [2018-11-12 16:23:12,900 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:23:12" (1/1) ... [2018-11-12 16:23:12,900 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:23:12" (1/1) ... [2018-11-12 16:23:13,042 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:23:12" (1/1) ... [2018-11-12 16:23:13,088 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:23:12" (1/1) ... [2018-11-12 16:23:13,153 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:23:12" (1/1) ... [2018-11-12 16:23:13,212 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 16:23:13,212 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 16:23:13,212 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 16:23:13,213 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 16:23:13,214 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:23:12" (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 [2018-11-12 16:23:13,283 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-12 16:23:13,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 16:23:13,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 16:23:13,284 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-12 16:23:13,284 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-12 16:23:13,284 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-12 16:23:13,284 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-12 16:23:13,284 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-12 16:23:13,285 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-12 16:23:13,285 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-12 16:23:13,285 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-12 16:23:13,285 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 16:23:13,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 16:23:13,286 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 16:23:13,287 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 16:23:24,224 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 16:23:24,225 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:23:24 BoogieIcfgContainer [2018-11-12 16:23:24,225 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 16:23:24,226 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 16:23:24,226 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 16:23:24,230 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 16:23:24,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 04:23:09" (1/3) ... [2018-11-12 16:23:24,231 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63114a63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:23:24, skipping insertion in model container [2018-11-12 16:23:24,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 04:23:12" (2/3) ... [2018-11-12 16:23:24,231 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63114a63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 04:23:24, skipping insertion in model container [2018-11-12 16:23:24,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 04:23:24" (3/3) ... [2018-11-12 16:23:24,233 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label25_false-unreach-call.c [2018-11-12 16:23:24,243 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 16:23:24,254 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 16:23:24,272 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 16:23:24,319 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 16:23:24,319 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 16:23:24,319 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 16:23:24,320 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 16:23:24,320 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 16:23:24,320 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 16:23:24,320 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 16:23:24,320 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 16:23:24,364 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-11-12 16:23:24,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2018-11-12 16:23:24,372 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:23:24,373 INFO L375 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] [2018-11-12 16:23:24,375 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:23:24,381 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:23:24,382 INFO L82 PathProgramCache]: Analyzing trace with hash 413005764, now seen corresponding path program 1 times [2018-11-12 16:23:24,384 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:23:24,434 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:23:24,434 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:23:24,435 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:23:24,435 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:23:24,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:23:24,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:23:24,837 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:23:24,837 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-12 16:23:24,837 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:23:24,849 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-12 16:23:24,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-12 16:23:24,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 16:23:24,869 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 4 states. [2018-11-12 16:23:37,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:23:37,926 INFO L93 Difference]: Finished difference Result 4063 states and 7611 transitions. [2018-11-12 16:23:37,938 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-12 16:23:37,939 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2018-11-12 16:23:37,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:23:37,990 INFO L225 Difference]: With dead ends: 4063 [2018-11-12 16:23:37,990 INFO L226 Difference]: Without dead ends: 2937 [2018-11-12 16:23:38,004 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 16:23:38,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2937 states. [2018-11-12 16:23:38,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2937 to 1982. [2018-11-12 16:23:38,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1982 states. [2018-11-12 16:23:38,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1982 states to 1982 states and 3456 transitions. [2018-11-12 16:23:38,225 INFO L78 Accepts]: Start accepts. Automaton has 1982 states and 3456 transitions. Word has length 30 [2018-11-12 16:23:38,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:23:38,226 INFO L480 AbstractCegarLoop]: Abstraction has 1982 states and 3456 transitions. [2018-11-12 16:23:38,226 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-12 16:23:38,226 INFO L276 IsEmpty]: Start isEmpty. Operand 1982 states and 3456 transitions. [2018-11-12 16:23:38,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2018-11-12 16:23:38,236 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:23:38,237 INFO L375 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:23:38,237 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:23:38,237 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:23:38,238 INFO L82 PathProgramCache]: Analyzing trace with hash -749391575, now seen corresponding path program 1 times [2018-11-12 16:23:38,238 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:23:38,239 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:23:38,239 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:23:38,239 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:23:38,240 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:23:38,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:23:38,662 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:23:38,662 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:23:38,662 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 16:23:38,662 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:23:38,664 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 16:23:38,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 16:23:38,665 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 16:23:38,665 INFO L87 Difference]: Start difference. First operand 1982 states and 3456 transitions. Second operand 6 states. [2018-11-12 16:23:53,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:23:53,470 INFO L93 Difference]: Finished difference Result 7277 states and 13063 transitions. [2018-11-12 16:23:53,472 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 16:23:53,472 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 101 [2018-11-12 16:23:53,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:23:53,500 INFO L225 Difference]: With dead ends: 7277 [2018-11-12 16:23:53,500 INFO L226 Difference]: Without dead ends: 5301 [2018-11-12 16:23:53,512 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 [2018-11-12 16:23:53,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5301 states. [2018-11-12 16:23:53,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5301 to 5252. [2018-11-12 16:23:53,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5252 states. [2018-11-12 16:23:53,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5252 states to 5252 states and 8253 transitions. [2018-11-12 16:23:53,651 INFO L78 Accepts]: Start accepts. Automaton has 5252 states and 8253 transitions. Word has length 101 [2018-11-12 16:23:53,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:23:53,651 INFO L480 AbstractCegarLoop]: Abstraction has 5252 states and 8253 transitions. [2018-11-12 16:23:53,652 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 16:23:53,652 INFO L276 IsEmpty]: Start isEmpty. Operand 5252 states and 8253 transitions. [2018-11-12 16:23:53,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-11-12 16:23:53,655 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:23:53,655 INFO L375 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:23:53,655 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:23:53,655 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:23:53,656 INFO L82 PathProgramCache]: Analyzing trace with hash -1848560104, now seen corresponding path program 1 times [2018-11-12 16:23:53,656 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:23:53,657 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:23:53,657 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:23:53,657 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:23:53,657 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:23:53,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:23:53,937 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:23:53,938 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:23:53,938 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 16:23:53,938 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:23:53,939 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 16:23:53,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 16:23:53,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 16:23:53,939 INFO L87 Difference]: Start difference. First operand 5252 states and 8253 transitions. Second operand 6 states. [2018-11-12 16:24:05,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:24:05,137 INFO L93 Difference]: Finished difference Result 13914 states and 22498 transitions. [2018-11-12 16:24:05,138 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 16:24:05,138 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 104 [2018-11-12 16:24:05,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:24:05,177 INFO L225 Difference]: With dead ends: 13914 [2018-11-12 16:24:05,177 INFO L226 Difference]: Without dead ends: 8668 [2018-11-12 16:24:05,198 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 [2018-11-12 16:24:05,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8668 states. [2018-11-12 16:24:05,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8668 to 8605. [2018-11-12 16:24:05,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8605 states. [2018-11-12 16:24:05,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8605 states to 8605 states and 12803 transitions. [2018-11-12 16:24:05,412 INFO L78 Accepts]: Start accepts. Automaton has 8605 states and 12803 transitions. Word has length 104 [2018-11-12 16:24:05,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:24:05,413 INFO L480 AbstractCegarLoop]: Abstraction has 8605 states and 12803 transitions. [2018-11-12 16:24:05,413 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 16:24:05,413 INFO L276 IsEmpty]: Start isEmpty. Operand 8605 states and 12803 transitions. [2018-11-12 16:24:05,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2018-11-12 16:24:05,423 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:24:05,424 INFO L375 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:24:05,424 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:24:05,424 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:24:05,425 INFO L82 PathProgramCache]: Analyzing trace with hash -207674108, now seen corresponding path program 1 times [2018-11-12 16:24:05,425 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:24:05,426 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:24:05,426 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:24:05,426 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:24:05,426 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:24:05,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:24:05,745 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:24:05,745 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 16:24:05,746 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-12 16:24:05,746 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:24:05,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-12 16:24:05,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-12 16:24:05,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-12 16:24:05,748 INFO L87 Difference]: Start difference. First operand 8605 states and 12803 transitions. Second operand 5 states. [2018-11-12 16:24:15,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:24:15,040 INFO L93 Difference]: Finished difference Result 25972 states and 40309 transitions. [2018-11-12 16:24:15,040 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-12 16:24:15,040 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 114 [2018-11-12 16:24:15,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:24:15,119 INFO L225 Difference]: With dead ends: 25972 [2018-11-12 16:24:15,119 INFO L226 Difference]: Without dead ends: 17373 [2018-11-12 16:24:15,145 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-12 16:24:15,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17373 states. [2018-11-12 16:24:15,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17373 to 17110. [2018-11-12 16:24:15,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17110 states. [2018-11-12 16:24:15,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17110 states to 17110 states and 24305 transitions. [2018-11-12 16:24:15,546 INFO L78 Accepts]: Start accepts. Automaton has 17110 states and 24305 transitions. Word has length 114 [2018-11-12 16:24:15,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:24:15,546 INFO L480 AbstractCegarLoop]: Abstraction has 17110 states and 24305 transitions. [2018-11-12 16:24:15,546 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-12 16:24:15,547 INFO L276 IsEmpty]: Start isEmpty. Operand 17110 states and 24305 transitions. [2018-11-12 16:24:15,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-11-12 16:24:15,549 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:24:15,550 INFO L375 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 16:24:15,550 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:24:15,550 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:24:15,550 INFO L82 PathProgramCache]: Analyzing trace with hash 158864184, now seen corresponding path program 1 times [2018-11-12 16:24:15,551 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:24:15,551 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:24:15,552 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:24:15,552 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:24:15,552 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:24:15,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:24:15,949 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-12 16:24:15,949 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:24:15,949 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:24:15,950 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 132 with the following transitions: [2018-11-12 16:24:15,952 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2755], [2763], [2767], [2769], [2772], [2780], [2788], [2796], [2804], [2812], [2820], [2828], [2836], [2844], [2852], [2860], [2868], [2876], [2884], [2892], [2900], [2908], [2916], [2924], [2932], [2940], [2948], [2956], [2964], [2972], [2980], [2988], [2996], [3004], [3012], [3020], [3028], [3036], [3044], [3052], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3148], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3265], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-11-12 16:24:16,018 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:24:16,018 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:24:17,637 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 16:24:17,639 INFO L272 AbstractInterpreter]: Visited 108 different actions 311 times. Merged at 5 different actions 9 times. Never widened. Performed 5596 root evaluator evaluations with a maximum evaluation depth of 6. Performed 5596 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-12 16:24:17,683 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:24:17,684 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 16:24:18,302 INFO L227 lantSequenceWeakener]: Weakened 78 states. On average, predicates are now at 71.93% of their original sizes. [2018-11-12 16:24:18,302 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 16:24:20,086 INFO L415 sIntCurrentIteration]: We unified 130 AI predicates to 130 [2018-11-12 16:24:20,087 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 16:24:20,088 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 16:24:20,088 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [5] total 20 [2018-11-12 16:24:20,088 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 16:24:20,089 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-12 16:24:20,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-12 16:24:20,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2018-11-12 16:24:20,090 INFO L87 Difference]: Start difference. First operand 17110 states and 24305 transitions. Second operand 17 states. [2018-11-12 16:24:35,530 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 16:26:21,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 16:26:21,638 INFO L93 Difference]: Finished difference Result 36124 states and 51241 transitions. [2018-11-12 16:26:21,638 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-11-12 16:26:21,638 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 131 [2018-11-12 16:26:21,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 16:26:21,720 INFO L225 Difference]: With dead ends: 36124 [2018-11-12 16:26:21,720 INFO L226 Difference]: Without dead ends: 19020 [2018-11-12 16:26:21,793 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 148 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 212 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=234, Invalid=956, Unknown=0, NotChecked=0, Total=1190 [2018-11-12 16:26:21,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19020 states. [2018-11-12 16:26:23,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19020 to 19015. [2018-11-12 16:26:23,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19015 states. [2018-11-12 16:26:23,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19015 states to 19015 states and 26268 transitions. [2018-11-12 16:26:23,185 INFO L78 Accepts]: Start accepts. Automaton has 19015 states and 26268 transitions. Word has length 131 [2018-11-12 16:26:23,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 16:26:23,185 INFO L480 AbstractCegarLoop]: Abstraction has 19015 states and 26268 transitions. [2018-11-12 16:26:23,185 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-12 16:26:23,186 INFO L276 IsEmpty]: Start isEmpty. Operand 19015 states and 26268 transitions. [2018-11-12 16:26:23,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2018-11-12 16:26:23,192 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 16:26:23,192 INFO L375 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-12 16:26:23,192 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 16:26:23,193 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:26:23,193 INFO L82 PathProgramCache]: Analyzing trace with hash 1762337499, now seen corresponding path program 1 times [2018-11-12 16:26:23,193 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 16:26:23,194 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:26:23,194 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:26:23,194 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 16:26:23,195 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 16:26:23,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:26:23,797 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 145 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:26:23,798 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:26:23,798 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 16:26:23,798 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 262 with the following transitions: [2018-11-12 16:26:23,799 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2755], [2763], [2767], [2769], [2772], [2780], [2788], [2796], [2804], [2812], [2820], [2828], [2836], [2844], [2852], [2860], [2868], [2876], [2884], [2892], [2900], [2908], [2916], [2924], [2932], [2940], [2948], [2956], [2964], [2972], [2980], [2988], [2996], [3004], [3012], [3020], [3028], [3036], [3044], [3052], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3148], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3265], [3266], [3270], [3274], [3278], [3282], [3286], [3290], [3294], [3305], [3309], [3313], [3317], [3321], [3325], [3329], [3333], [3344], [3355], [3366], [3370], [3374], [3378], [3382], [3386], [3390], [3394], [3398], [3402], [3406], [3409], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-11-12 16:26:23,809 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 16:26:23,809 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 16:26:25,237 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 16:26:25,237 INFO L272 AbstractInterpreter]: Visited 139 different actions 685 times. Merged at 7 different actions 36 times. Widened at 1 different actions 1 times. Performed 11427 root evaluator evaluations with a maximum evaluation depth of 6. Performed 11427 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 6 fixpoints after 3 different actions. Largest state had 26 variables. [2018-11-12 16:26:25,277 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 16:26:25,279 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 16:26:25,279 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 16:26:25,280 INFO L192 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 [2018-11-12 16:26:25,299 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 16:26:25,300 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 16:26:25,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 16:26:25,453 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 16:26:26,679 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 23 [2018-11-12 16:26:27,114 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 51 proven. 54 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2018-11-12 16:26:27,115 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 16:26:28,025 WARN L179 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 10 [2018-11-12 16:26:28,751 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 51 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 16:26:28,782 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 16:26:28,783 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 9] total 19 [2018-11-12 16:26:28,783 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 16:26:28,786 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-12 16:26:28,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-12 16:26:28,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2018-11-12 16:26:28,787 INFO L87 Difference]: Start difference. First operand 19015 states and 26268 transitions. Second operand 12 states. Received shutdown request... [2018-11-12 16:26:34,515 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-11-12 16:26:34,516 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-12 16:26:34,523 WARN L205 ceAbstractionStarter]: Timeout [2018-11-12 16:26:34,523 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 04:26:34 BoogieIcfgContainer [2018-11-12 16:26:34,523 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 16:26:34,524 INFO L168 Benchmark]: Toolchain (without parser) took 204517.01 ms. Allocated memory was 1.5 GB in the beginning and 6.1 GB in the end (delta: 4.6 GB). Free memory was 1.4 GB in the beginning and 2.5 GB in the end (delta: -1.1 GB). Peak memory consumption was 3.5 GB. Max. memory is 7.1 GB. [2018-11-12 16:26:34,525 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-12 16:26:34,526 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2468.00 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-11-12 16:26:34,527 INFO L168 Benchmark]: Boogie Procedure Inliner took 371.44 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 830.5 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 67.6 MB. Max. memory is 7.1 GB. [2018-11-12 16:26:34,528 INFO L168 Benchmark]: Boogie Preprocessor took 361.37 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 36.3 MB). Peak memory consumption was 36.3 MB. Max. memory is 7.1 GB. [2018-11-12 16:26:34,529 INFO L168 Benchmark]: RCFGBuilder took 11013.08 ms. Allocated memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: 147.3 MB). Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 49.0 MB). Peak memory consumption was 658.5 MB. Max. memory is 7.1 GB. [2018-11-12 16:26:34,530 INFO L168 Benchmark]: TraceAbstraction took 190297.12 ms. Allocated memory was 2.5 GB in the beginning and 6.1 GB in the end (delta: 3.6 GB). Free memory was 2.2 GB in the beginning and 2.5 GB in the end (delta: -257.2 MB). Peak memory consumption was 3.3 GB. Max. memory is 7.1 GB. [2018-11-12 16:26:34,535 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2468.00 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.2 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 371.44 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 830.5 MB). Free memory was 1.2 GB in the beginning and 2.3 GB in the end (delta: -1.1 GB). Peak memory consumption was 67.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 361.37 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 36.3 MB). Peak memory consumption was 36.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 11013.08 ms. Allocated memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: 147.3 MB). Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 49.0 MB). Peak memory consumption was 658.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 190297.12 ms. Allocated memory was 2.5 GB in the beginning and 6.1 GB in the end (delta: 3.6 GB). Free memory was 2.2 GB in the beginning and 2.5 GB in the end (delta: -257.2 MB). Peak memory consumption was 3.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 81]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 81). Cancelled while BasicCegarLoop was constructing difference of abstraction (19015states) and FLOYD_HOARE automaton (currently 31 states, 12 states before enhancement),while ReachableStatesComputation was computing reachable states (2355 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 190.2s OverallTime, 6 OverallIterations, 3 TraceHistogramMax, 176.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3262 SDtfs, 21670 SDslu, 3741 SDs, 0 SdLazy, 41569 SolverSat, 8449 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 92.3s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 751 GetRequests, 652 SyntacticMatches, 2 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 609 ImplicationChecksByTransitivity, 6.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19015occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 3.2s AbstIntTime, 2 AbstIntIterations, 1 AbstIntStrong, 0.9967635046113305 AbsIntWeakeningRatio, 0.16153846153846155 AbsIntAvgWeakeningVarsNumRemoved, 12.23076923076923 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 2.3s AutomataMinimizationTime, 5 MinimizatonAttempts, 1335 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 5.2s InterpolantComputationTime, 1002 NumberOfCodeBlocks, 1002 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 1255 ConstructedInterpolants, 0 QuantifiedInterpolants, 1947588 SizeOfPredicates, 10 NumberOfNonLiveVariables, 477 ConjunctsInSsa, 18 ConjunctsInUnsatCore, 8 InterpolantComputations, 4 PerfectInterpolantSequences, 362/533 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown