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/Problem03_label05_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 17:16:59,301 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 17:16:59,303 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 17:16:59,318 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 17:16:59,318 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 17:16:59,319 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 17:16:59,320 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 17:16:59,322 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 17:16:59,323 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 17:16:59,324 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 17:16:59,325 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 17:16:59,325 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 17:16:59,326 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 17:16:59,327 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 17:16:59,328 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 17:16:59,329 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 17:16:59,330 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 17:16:59,332 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 17:16:59,334 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 17:16:59,336 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 17:16:59,337 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 17:16:59,338 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 17:16:59,341 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 17:16:59,341 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 17:16:59,341 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 17:16:59,342 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 17:16:59,343 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 17:16:59,344 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 17:16:59,345 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 17:16:59,346 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 17:16:59,346 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 17:16:59,347 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-12 17:16:59,347 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-12 17:16:59,347 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-12 17:16:59,349 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-12 17:16:59,349 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-12 17:16:59,350 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 17:16:59,365 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 17:16:59,365 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 17:16:59,366 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 17:16:59,366 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 17:16:59,367 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 17:16:59,367 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 17:16:59,367 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 17:16:59,367 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 17:16:59,367 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 17:16:59,368 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 17:16:59,368 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 17:16:59,368 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 17:16:59,368 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 17:16:59,369 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 17:16:59,369 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 17:16:59,369 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 17:16:59,369 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 17:16:59,372 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 17:16:59,372 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 17:16:59,372 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 17:16:59,372 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 17:16:59,373 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 17:16:59,373 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 17:16:59,373 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 17:16:59,373 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 17:16:59,373 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 17:16:59,374 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 17:16:59,374 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 17:16:59,374 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 17:16:59,374 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 17:16:59,375 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 17:16:59,376 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 17:16:59,377 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 17:16:59,377 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 17:16:59,377 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 17:16:59,455 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 17:16:59,471 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 17:16:59,476 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 17:16:59,478 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 17:16:59,479 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 17:16:59,479 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label05_true-unreach-call.c [2018-11-12 17:16:59,553 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f610c587/7b5a5621ffbe4cfba360b3a75c9c22e0/FLAGcc6454236 [2018-11-12 17:17:00,244 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 17:17:00,245 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label05_true-unreach-call.c [2018-11-12 17:17:00,269 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f610c587/7b5a5621ffbe4cfba360b3a75c9c22e0/FLAGcc6454236 [2018-11-12 17:17:00,288 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f610c587/7b5a5621ffbe4cfba360b3a75c9c22e0 [2018-11-12 17:17:00,301 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 17:17:00,303 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 17:17:00,304 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 17:17:00,304 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 17:17:00,308 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 17:17:00,309 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 05:17:00" (1/1) ... [2018-11-12 17:17:00,312 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35afa698 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:17:00, skipping insertion in model container [2018-11-12 17:17:00,312 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 05:17:00" (1/1) ... [2018-11-12 17:17:00,323 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 17:17:00,408 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 17:17:01,190 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 17:17:01,196 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 17:17:01,444 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 17:17:01,470 INFO L193 MainTranslator]: Completed translation [2018-11-12 17:17:01,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:17:01 WrapperNode [2018-11-12 17:17:01,471 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 17:17:01,472 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 17:17:01,472 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 17:17:01,472 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 17:17:01,620 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:17:01" (1/1) ... [2018-11-12 17:17:01,669 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:17:01" (1/1) ... [2018-11-12 17:17:01,679 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 17:17:01,680 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 17:17:01,680 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 17:17:01,680 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 17:17:01,692 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:17:01" (1/1) ... [2018-11-12 17:17:01,692 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:17:01" (1/1) ... [2018-11-12 17:17:01,700 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:17:01" (1/1) ... [2018-11-12 17:17:01,700 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:17:01" (1/1) ... [2018-11-12 17:17:01,764 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:17:01" (1/1) ... [2018-11-12 17:17:01,798 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:17:01" (1/1) ... [2018-11-12 17:17:01,814 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:17:01" (1/1) ... [2018-11-12 17:17:01,831 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 17:17:01,832 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 17:17:01,832 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 17:17:01,832 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 17:17:01,834 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:17:01" (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 [2018-11-12 17:17:01,913 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-12 17:17:01,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 17:17:01,913 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 17:17:01,913 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-12 17:17:01,914 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-12 17:17:01,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 17:17:01,914 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 17:17:01,914 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 17:17:01,914 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 17:17:06,942 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 17:17:06,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 05:17:06 BoogieIcfgContainer [2018-11-12 17:17:06,943 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 17:17:06,944 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 17:17:06,944 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 17:17:06,948 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 17:17:06,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 05:17:00" (1/3) ... [2018-11-12 17:17:06,950 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4512c37a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 05:17:06, skipping insertion in model container [2018-11-12 17:17:06,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:17:01" (2/3) ... [2018-11-12 17:17:06,950 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4512c37a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 05:17:06, skipping insertion in model container [2018-11-12 17:17:06,950 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 05:17:06" (3/3) ... [2018-11-12 17:17:06,952 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label05_true-unreach-call.c [2018-11-12 17:17:06,963 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 17:17:06,973 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 17:17:06,991 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 17:17:07,033 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 17:17:07,034 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 17:17:07,034 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 17:17:07,034 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 17:17:07,034 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 17:17:07,034 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 17:17:07,035 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 17:17:07,035 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 17:17:07,065 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-11-12 17:17:07,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2018-11-12 17:17:07,085 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:17:07,087 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:17:07,089 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:17:07,094 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:17:07,095 INFO L82 PathProgramCache]: Analyzing trace with hash -49135596, now seen corresponding path program 1 times [2018-11-12 17:17:07,097 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:17:07,145 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:17:07,146 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:17:07,146 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:17:07,146 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:17:07,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:17:08,123 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 17:17:08,126 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 17:17:08,127 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-12 17:17:08,127 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 17:17:08,134 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 17:17:08,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 17:17:08,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 17:17:08,157 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 3 states. [2018-11-12 17:17:10,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 17:17:10,521 INFO L93 Difference]: Finished difference Result 838 states and 1479 transitions. [2018-11-12 17:17:10,522 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 17:17:10,523 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 165 [2018-11-12 17:17:10,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 17:17:10,546 INFO L225 Difference]: With dead ends: 838 [2018-11-12 17:17:10,546 INFO L226 Difference]: Without dead ends: 524 [2018-11-12 17:17:10,554 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 [2018-11-12 17:17:10,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2018-11-12 17:17:10,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 522. [2018-11-12 17:17:10,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 522 states. [2018-11-12 17:17:10,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 890 transitions. [2018-11-12 17:17:10,646 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 890 transitions. Word has length 165 [2018-11-12 17:17:10,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 17:17:10,647 INFO L480 AbstractCegarLoop]: Abstraction has 522 states and 890 transitions. [2018-11-12 17:17:10,647 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 17:17:10,651 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 890 transitions. [2018-11-12 17:17:10,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2018-11-12 17:17:10,665 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:17:10,665 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 17:17:10,666 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:17:10,666 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:17:10,666 INFO L82 PathProgramCache]: Analyzing trace with hash -1507813107, now seen corresponding path program 1 times [2018-11-12 17:17:10,672 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:17:10,673 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:17:10,673 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:17:10,674 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:17:10,674 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:17:10,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:17:10,999 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 17:17:10,999 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 17:17:10,999 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 17:17:11,000 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 17:17:11,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 17:17:11,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 17:17:11,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 17:17:11,005 INFO L87 Difference]: Start difference. First operand 522 states and 890 transitions. Second operand 6 states. [2018-11-12 17:17:14,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 17:17:14,812 INFO L93 Difference]: Finished difference Result 1581 states and 2759 transitions. [2018-11-12 17:17:14,825 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-12 17:17:14,825 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 175 [2018-11-12 17:17:14,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 17:17:14,842 INFO L225 Difference]: With dead ends: 1581 [2018-11-12 17:17:14,842 INFO L226 Difference]: Without dead ends: 1065 [2018-11-12 17:17:14,846 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 17:17:14,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1065 states. [2018-11-12 17:17:14,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1065 to 1023. [2018-11-12 17:17:14,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1023 states. [2018-11-12 17:17:14,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1023 states to 1023 states and 1733 transitions. [2018-11-12 17:17:14,933 INFO L78 Accepts]: Start accepts. Automaton has 1023 states and 1733 transitions. Word has length 175 [2018-11-12 17:17:14,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 17:17:14,934 INFO L480 AbstractCegarLoop]: Abstraction has 1023 states and 1733 transitions. [2018-11-12 17:17:14,934 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 17:17:14,934 INFO L276 IsEmpty]: Start isEmpty. Operand 1023 states and 1733 transitions. [2018-11-12 17:17:14,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-11-12 17:17:14,940 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:17:14,941 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 17:17:14,941 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:17:14,941 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:17:14,942 INFO L82 PathProgramCache]: Analyzing trace with hash -2079958768, now seen corresponding path program 1 times [2018-11-12 17:17:14,943 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:17:14,944 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:17:14,944 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:17:14,944 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:17:14,944 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:17:15,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:17:15,254 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 17:17:15,254 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 17:17:15,254 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-12 17:17:15,255 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 17:17:15,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 17:17:15,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 17:17:15,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 17:17:15,256 INFO L87 Difference]: Start difference. First operand 1023 states and 1733 transitions. Second operand 3 states. [2018-11-12 17:17:18,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 17:17:18,099 INFO L93 Difference]: Finished difference Result 2887 states and 5063 transitions. [2018-11-12 17:17:18,108 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 17:17:18,108 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 178 [2018-11-12 17:17:18,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 17:17:18,121 INFO L225 Difference]: With dead ends: 2887 [2018-11-12 17:17:18,122 INFO L226 Difference]: Without dead ends: 1870 [2018-11-12 17:17:18,127 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 17:17:18,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1870 states. [2018-11-12 17:17:18,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1870 to 1865. [2018-11-12 17:17:18,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1865 states. [2018-11-12 17:17:18,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1865 states to 1865 states and 3055 transitions. [2018-11-12 17:17:18,202 INFO L78 Accepts]: Start accepts. Automaton has 1865 states and 3055 transitions. Word has length 178 [2018-11-12 17:17:18,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 17:17:18,203 INFO L480 AbstractCegarLoop]: Abstraction has 1865 states and 3055 transitions. [2018-11-12 17:17:18,203 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 17:17:18,203 INFO L276 IsEmpty]: Start isEmpty. Operand 1865 states and 3055 transitions. [2018-11-12 17:17:18,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2018-11-12 17:17:18,211 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:17:18,212 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, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 17:17:18,212 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:17:18,212 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:17:18,212 INFO L82 PathProgramCache]: Analyzing trace with hash -267064481, now seen corresponding path program 1 times [2018-11-12 17:17:18,213 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:17:18,213 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:17:18,214 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:17:18,214 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:17:18,214 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:17:18,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:17:18,637 WARN L179 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-11-12 17:17:18,830 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 17:17:18,830 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 17:17:18,830 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 17:17:18,832 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 199 with the following transitions: [2018-11-12 17:17:18,834 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [115], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [781], [783], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-12 17:17:18,922 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 17:17:18,922 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 17:17:20,745 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 17:17:20,747 INFO L272 AbstractInterpreter]: Visited 165 different actions 165 times. Never merged. Never widened. Performed 3049 root evaluator evaluations with a maximum evaluation depth of 6. Performed 3049 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Never found a fixpoint. Largest state had 88 variables. [2018-11-12 17:17:20,790 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:17:20,791 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 17:17:22,211 INFO L227 lantSequenceWeakener]: Weakened 192 states. On average, predicates are now at 71.13% of their original sizes. [2018-11-12 17:17:22,211 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 17:17:23,960 INFO L415 sIntCurrentIteration]: We unified 197 AI predicates to 197 [2018-11-12 17:17:23,960 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 17:17:23,961 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 17:17:23,962 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [7] total 21 [2018-11-12 17:17:23,962 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 17:17:23,963 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-12 17:17:23,963 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-12 17:17:23,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2018-11-12 17:17:23,963 INFO L87 Difference]: Start difference. First operand 1865 states and 3055 transitions. Second operand 16 states. [2018-11-12 17:18:10,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 17:18:10,174 INFO L93 Difference]: Finished difference Result 3934 states and 6464 transitions. [2018-11-12 17:18:10,174 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-12 17:18:10,174 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 198 [2018-11-12 17:18:10,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 17:18:10,186 INFO L225 Difference]: With dead ends: 3934 [2018-11-12 17:18:10,186 INFO L226 Difference]: Without dead ends: 2075 [2018-11-12 17:18:10,192 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 200 GetRequests, 183 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2018-11-12 17:18:10,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2075 states. [2018-11-12 17:18:10,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2075 to 2073. [2018-11-12 17:18:10,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2073 states. [2018-11-12 17:18:10,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2073 states to 2073 states and 3272 transitions. [2018-11-12 17:18:10,248 INFO L78 Accepts]: Start accepts. Automaton has 2073 states and 3272 transitions. Word has length 198 [2018-11-12 17:18:10,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 17:18:10,249 INFO L480 AbstractCegarLoop]: Abstraction has 2073 states and 3272 transitions. [2018-11-12 17:18:10,249 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-12 17:18:10,249 INFO L276 IsEmpty]: Start isEmpty. Operand 2073 states and 3272 transitions. [2018-11-12 17:18:10,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-11-12 17:18:10,257 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:18:10,257 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:18:10,258 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:18:10,258 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:18:10,258 INFO L82 PathProgramCache]: Analyzing trace with hash 129922850, now seen corresponding path program 1 times [2018-11-12 17:18:10,258 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:18:10,259 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:18:10,259 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:18:10,259 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:18:10,260 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:18:10,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:18:10,615 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 18 proven. 28 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-12 17:18:10,616 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 17:18:10,616 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 17:18:10,616 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 211 with the following transitions: [2018-11-12 17:18:10,617 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [115], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [781], [783], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-12 17:18:10,630 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 17:18:10,630 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 17:18:13,114 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 17:18:13,114 INFO L272 AbstractInterpreter]: Visited 169 different actions 332 times. Merged at 5 different actions 5 times. Never widened. Performed 8338 root evaluator evaluations with a maximum evaluation depth of 6. Performed 8338 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-11-12 17:18:13,153 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:18:13,153 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 17:18:15,573 INFO L227 lantSequenceWeakener]: Weakened 62 states. On average, predicates are now at 75.36% of their original sizes. [2018-11-12 17:18:15,573 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 17:18:21,402 INFO L415 sIntCurrentIteration]: We unified 209 AI predicates to 209 [2018-11-12 17:18:21,403 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 17:18:21,403 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 17:18:21,403 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [23] imperfect sequences [4] total 25 [2018-11-12 17:18:21,404 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 17:18:21,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-11-12 17:18:21,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-11-12 17:18:21,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=408, Unknown=0, NotChecked=0, Total=506 [2018-11-12 17:18:21,406 INFO L87 Difference]: Start difference. First operand 2073 states and 3272 transitions. Second operand 23 states. [2018-11-12 17:19:56,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 17:19:56,257 INFO L93 Difference]: Finished difference Result 4565 states and 7268 transitions. [2018-11-12 17:19:56,258 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-11-12 17:19:56,258 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 210 [2018-11-12 17:19:56,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 17:19:56,273 INFO L225 Difference]: With dead ends: 4565 [2018-11-12 17:19:56,273 INFO L226 Difference]: Without dead ends: 2706 [2018-11-12 17:19:56,279 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 220 GetRequests, 139 SyntacticMatches, 49 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 530 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=229, Invalid=893, Unknown=0, NotChecked=0, Total=1122 [2018-11-12 17:19:56,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2706 states. [2018-11-12 17:19:56,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2706 to 2703. [2018-11-12 17:19:56,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2703 states. [2018-11-12 17:19:56,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2703 states to 2703 states and 3950 transitions. [2018-11-12 17:19:56,354 INFO L78 Accepts]: Start accepts. Automaton has 2703 states and 3950 transitions. Word has length 210 [2018-11-12 17:19:56,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 17:19:56,355 INFO L480 AbstractCegarLoop]: Abstraction has 2703 states and 3950 transitions. [2018-11-12 17:19:56,355 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-11-12 17:19:56,355 INFO L276 IsEmpty]: Start isEmpty. Operand 2703 states and 3950 transitions. [2018-11-12 17:19:56,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2018-11-12 17:19:56,363 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:19:56,364 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:19:56,364 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:19:56,364 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:19:56,365 INFO L82 PathProgramCache]: Analyzing trace with hash 559717910, now seen corresponding path program 1 times [2018-11-12 17:19:56,365 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:19:56,366 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:19:56,366 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:19:56,366 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:19:56,366 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:19:56,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:19:56,917 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 74 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 17:19:56,918 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 17:19:56,918 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 17:19:56,918 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 226 with the following transitions: [2018-11-12 17:19:56,919 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [135], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [781], [783], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-12 17:19:56,927 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 17:19:56,927 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 17:19:58,558 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 17:19:58,558 INFO L272 AbstractInterpreter]: Visited 169 different actions 331 times. Merged at 4 different actions 4 times. Never widened. Performed 7759 root evaluator evaluations with a maximum evaluation depth of 6. Performed 7759 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-11-12 17:19:58,565 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:19:58,565 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 17:20:00,007 INFO L227 lantSequenceWeakener]: Weakened 222 states. On average, predicates are now at 70.97% of their original sizes. [2018-11-12 17:20:00,007 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 17:20:00,267 INFO L415 sIntCurrentIteration]: We unified 224 AI predicates to 224 [2018-11-12 17:20:00,267 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 17:20:00,267 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 17:20:00,268 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [17] imperfect sequences [6] total 21 [2018-11-12 17:20:00,268 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 17:20:00,268 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-11-12 17:20:00,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-11-12 17:20:00,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2018-11-12 17:20:00,269 INFO L87 Difference]: Start difference. First operand 2703 states and 3950 transitions. Second operand 17 states. [2018-11-12 17:20:46,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 17:20:46,598 INFO L93 Difference]: Finished difference Result 6714 states and 10737 transitions. [2018-11-12 17:20:46,598 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-12 17:20:46,598 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 225 [2018-11-12 17:20:46,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 17:20:46,623 INFO L225 Difference]: With dead ends: 6714 [2018-11-12 17:20:46,623 INFO L226 Difference]: Without dead ends: 4855 [2018-11-12 17:20:46,633 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 233 GetRequests, 209 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=148, Invalid=502, Unknown=0, NotChecked=0, Total=650 [2018-11-12 17:20:46,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4855 states. [2018-11-12 17:20:46,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4855 to 4852. [2018-11-12 17:20:46,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4852 states. [2018-11-12 17:20:46,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4852 states to 4852 states and 6504 transitions. [2018-11-12 17:20:46,753 INFO L78 Accepts]: Start accepts. Automaton has 4852 states and 6504 transitions. Word has length 225 [2018-11-12 17:20:46,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 17:20:46,754 INFO L480 AbstractCegarLoop]: Abstraction has 4852 states and 6504 transitions. [2018-11-12 17:20:46,754 INFO L481 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-11-12 17:20:46,754 INFO L276 IsEmpty]: Start isEmpty. Operand 4852 states and 6504 transitions. [2018-11-12 17:20:46,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2018-11-12 17:20:46,766 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:20:46,767 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:20:46,767 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:20:46,767 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:20:46,767 INFO L82 PathProgramCache]: Analyzing trace with hash 1706435251, now seen corresponding path program 1 times [2018-11-12 17:20:46,768 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:20:46,769 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:20:46,769 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:20:46,769 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:20:46,769 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:20:46,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:20:47,061 WARN L179 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 17:20:47,887 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 69 proven. 35 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-12 17:20:47,887 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 17:20:47,887 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 17:20:47,888 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 238 with the following transitions: [2018-11-12 17:20:47,888 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [135], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [781], [783], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-12 17:20:47,905 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 17:20:47,906 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 17:20:51,369 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-12 17:20:51,369 INFO L272 AbstractInterpreter]: Visited 171 different actions 510 times. Merged at 7 different actions 21 times. Never widened. Performed 17249 root evaluator evaluations with a maximum evaluation depth of 6. Performed 17249 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 4 fixpoints after 3 different actions. Largest state had 88 variables. [2018-11-12 17:20:51,378 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:20:51,379 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-12 17:20:51,379 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 17:20:51,379 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 17:20:51,389 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:20:51,389 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-12 17:20:51,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:20:51,652 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-12 17:20:52,108 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 71 proven. 2 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2018-11-12 17:20:52,109 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-12 17:20:53,073 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 78 proven. 11 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-11-12 17:20:53,095 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-12 17:20:53,095 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 14 [2018-11-12 17:20:53,096 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-12 17:20:53,096 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-12 17:20:53,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-12 17:20:53,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2018-11-12 17:20:53,097 INFO L87 Difference]: Start difference. First operand 4852 states and 6504 transitions. Second operand 12 states. Received shutdown request... [2018-11-12 17:20:59,009 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-11-12 17:20:59,009 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-12 17:20:59,015 WARN L205 ceAbstractionStarter]: Timeout [2018-11-12 17:20:59,015 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 05:20:59 BoogieIcfgContainer [2018-11-12 17:20:59,016 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 17:20:59,016 INFO L168 Benchmark]: Toolchain (without parser) took 238715.02 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 88.9 MB). Peak memory consumption was 2.7 GB. Max. memory is 7.1 GB. [2018-11-12 17:20:59,018 INFO L168 Benchmark]: CDTParser took 0.24 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 17:20:59,018 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1167.28 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2018-11-12 17:20:59,019 INFO L168 Benchmark]: Boogie Procedure Inliner took 208.15 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 744.0 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -870.9 MB). Peak memory consumption was 38.5 MB. Max. memory is 7.1 GB. [2018-11-12 17:20:59,020 INFO L168 Benchmark]: Boogie Preprocessor took 151.47 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. [2018-11-12 17:20:59,020 INFO L168 Benchmark]: RCFGBuilder took 5111.20 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 255.9 MB). Peak memory consumption was 255.9 MB. Max. memory is 7.1 GB. [2018-11-12 17:20:59,021 INFO L168 Benchmark]: TraceAbstraction took 232071.63 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.9 GB in the beginning and 1.3 GB in the end (delta: 605.9 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2018-11-12 17:20:59,026 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 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 1167.28 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 208.15 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 744.0 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -870.9 MB). Peak memory consumption was 38.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 151.47 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 5111.20 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.9 GB in the end (delta: 255.9 MB). Peak memory consumption was 255.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 232071.63 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 1.9 GB in the beginning and 1.3 GB in the end (delta: 605.9 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1509]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1509). Cancelled while BasicCegarLoop was constructing difference of abstraction (4852states) and FLOYD_HOARE automaton (currently 31 states, 12 states before enhancement),while ReachableStatesComputation was computing reachable states (7791 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 312 locations, 1 error locations. TIMEOUT Result, 231.9s OverallTime, 7 OverallIterations, 4 TraceHistogramMax, 202.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1931 SDtfs, 9762 SDslu, 3041 SDs, 0 SdLazy, 16960 SolverSat, 2662 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 132.6s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 1210 GetRequests, 1034 SyntacticMatches, 54 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1122 ImplicationChecksByTransitivity, 11.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4852occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 9.6s AbstIntTime, 4 AbstIntIterations, 3 AbstIntStrong, 0.9990569006717006 AbsIntWeakeningRatio, 0.2841269841269841 AbsIntAvgWeakeningVarsNumRemoved, 50.01428571428571 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 6 MinimizatonAttempts, 57 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 4.7s InterpolantComputationTime, 1625 NumberOfCodeBlocks, 1625 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 1853 ConstructedInterpolants, 0 QuantifiedInterpolants, 910075 SizeOfPredicates, 1 NumberOfNonLiveVariables, 1209 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 9 InterpolantComputations, 3 PerfectInterpolantSequences, 393/501 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown