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.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label22_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 14:41:02,273 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 14:41:02,275 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 14:41:02,287 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 14:41:02,287 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 14:41:02,288 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 14:41:02,290 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 14:41:02,291 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 14:41:02,293 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 14:41:02,294 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 14:41:02,295 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 14:41:02,295 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 14:41:02,296 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 14:41:02,297 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 14:41:02,298 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 14:41:02,299 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 14:41:02,300 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 14:41:02,302 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 14:41:02,304 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 14:41:02,305 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 14:41:02,307 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 14:41:02,308 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 14:41:02,314 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 14:41:02,315 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 14:41:02,315 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 14:41:02,316 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 14:41:02,319 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 14:41:02,320 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 14:41:02,321 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 14:41:02,325 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 14:41:02,325 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 14:41:02,326 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 14:41:02,326 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 14:41:02,326 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 14:41:02,330 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 14:41:02,330 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 14:41:02,331 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.epf [2018-11-07 14:41:02,363 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 14:41:02,364 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 14:41:02,364 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 14:41:02,365 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 14:41:02,365 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 14:41:02,365 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 14:41:02,365 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 14:41:02,365 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 14:41:02,367 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 14:41:02,367 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 14:41:02,368 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 14:41:02,368 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 14:41:02,369 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 14:41:02,369 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 14:41:02,369 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 14:41:02,369 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 14:41:02,369 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 14:41:02,370 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 14:41:02,370 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 14:41:02,370 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 14:41:02,370 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 14:41:02,370 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 14:41:02,371 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 14:41:02,373 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 14:41:02,373 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 14:41:02,373 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 14:41:02,373 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 14:41:02,373 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 14:41:02,374 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 14:41:02,374 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 14:41:02,374 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 14:41:02,374 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 14:41:02,374 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 14:41:02,375 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 14:41:02,430 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 14:41:02,444 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 14:41:02,448 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 14:41:02,450 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 14:41:02,450 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 14:41:02,451 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label22_true-unreach-call.c [2018-11-07 14:41:02,511 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4c0cc7ed/868b5c7794d4403ea7b8f6d4a3f39596/FLAGd58d82a1d [2018-11-07 14:41:03,278 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 14:41:03,279 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem12_label22_true-unreach-call.c [2018-11-07 14:41:03,314 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4c0cc7ed/868b5c7794d4403ea7b8f6d4a3f39596/FLAGd58d82a1d [2018-11-07 14:41:03,334 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4c0cc7ed/868b5c7794d4403ea7b8f6d4a3f39596 [2018-11-07 14:41:03,346 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 14:41:03,349 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 14:41:03,350 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 14:41:03,350 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 14:41:03,354 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 14:41:03,355 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:41:03" (1/1) ... [2018-11-07 14:41:03,359 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@269a0f31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:41:03, skipping insertion in model container [2018-11-07 14:41:03,360 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:41:03" (1/1) ... [2018-11-07 14:41:03,371 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 14:41:03,529 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 14:41:04,767 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 14:41:04,771 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 14:41:05,445 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 14:41:05,477 INFO L193 MainTranslator]: Completed translation [2018-11-07 14:41:05,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:41:05 WrapperNode [2018-11-07 14:41:05,478 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 14:41:05,479 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 14:41:05,479 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 14:41:05,479 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 14:41:05,489 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:41:05" (1/1) ... [2018-11-07 14:41:05,779 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:41:05" (1/1) ... [2018-11-07 14:41:05,797 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 14:41:05,798 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 14:41:05,798 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 14:41:05,798 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 14:41:05,809 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:41:05" (1/1) ... [2018-11-07 14:41:05,810 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:41:05" (1/1) ... [2018-11-07 14:41:05,829 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:41:05" (1/1) ... [2018-11-07 14:41:05,830 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:41:05" (1/1) ... [2018-11-07 14:41:05,933 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:41:05" (1/1) ... [2018-11-07 14:41:05,973 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:41:05" (1/1) ... [2018-11-07 14:41:06,001 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:41:05" (1/1) ... [2018-11-07 14:41:06,038 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 14:41:06,038 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 14:41:06,038 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 14:41:06,039 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 14:41:06,039 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:41:05" (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 [2018-11-07 14:41:06,108 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 14:41:06,108 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 14:41:06,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 14:41:06,110 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 14:41:06,110 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 14:41:06,110 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 14:41:06,110 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 14:41:06,110 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 14:41:06,111 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 14:41:06,111 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 14:41:06,111 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 14:41:06,111 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 14:41:06,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 14:41:06,112 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 14:41:06,112 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 14:41:14,822 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 14:41:14,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:41:14 BoogieIcfgContainer [2018-11-07 14:41:14,823 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 14:41:14,824 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 14:41:14,824 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 14:41:14,827 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 14:41:14,827 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:41:03" (1/3) ... [2018-11-07 14:41:14,828 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@196a5b06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:41:14, skipping insertion in model container [2018-11-07 14:41:14,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:41:05" (2/3) ... [2018-11-07 14:41:14,829 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@196a5b06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:41:14, skipping insertion in model container [2018-11-07 14:41:14,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:41:14" (3/3) ... [2018-11-07 14:41:14,831 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem12_label22_true-unreach-call.c [2018-11-07 14:41:14,841 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 14:41:14,856 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 14:41:14,871 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 14:41:14,918 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 14:41:14,918 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 14:41:14,918 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 14:41:14,918 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 14:41:14,919 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 14:41:14,919 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 14:41:14,919 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 14:41:14,919 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 14:41:14,962 INFO L276 IsEmpty]: Start isEmpty. Operand 840 states. [2018-11-07 14:41:14,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-11-07 14:41:14,972 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:41:14,973 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] [2018-11-07 14:41:14,975 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:41:14,980 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:41:14,981 INFO L82 PathProgramCache]: Analyzing trace with hash -2101117445, now seen corresponding path program 1 times [2018-11-07 14:41:14,983 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:41:15,034 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:41:15,035 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:41:15,035 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:41:15,035 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:41:15,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:41:15,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:41:15,575 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:41:15,576 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 14:41:15,576 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:41:15,583 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 14:41:15,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 14:41:15,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 14:41:15,605 INFO L87 Difference]: Start difference. First operand 840 states. Second operand 3 states. [2018-11-07 14:41:23,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:41:23,004 INFO L93 Difference]: Finished difference Result 2446 states and 4700 transitions. [2018-11-07 14:41:23,005 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 14:41:23,007 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2018-11-07 14:41:23,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:41:23,056 INFO L225 Difference]: With dead ends: 2446 [2018-11-07 14:41:23,056 INFO L226 Difference]: Without dead ends: 1604 [2018-11-07 14:41:23,076 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 14:41:23,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2018-11-07 14:41:23,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1604. [2018-11-07 14:41:23,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1604 states. [2018-11-07 14:41:23,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1604 states to 1604 states and 2909 transitions. [2018-11-07 14:41:23,240 INFO L78 Accepts]: Start accepts. Automaton has 1604 states and 2909 transitions. Word has length 71 [2018-11-07 14:41:23,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:41:23,241 INFO L480 AbstractCegarLoop]: Abstraction has 1604 states and 2909 transitions. [2018-11-07 14:41:23,241 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 14:41:23,241 INFO L276 IsEmpty]: Start isEmpty. Operand 1604 states and 2909 transitions. [2018-11-07 14:41:23,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-11-07 14:41:23,256 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:41:23,257 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 14:41:23,257 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:41:23,257 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:41:23,258 INFO L82 PathProgramCache]: Analyzing trace with hash -843018732, now seen corresponding path program 1 times [2018-11-07 14:41:23,259 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:41:23,260 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:41:23,260 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:41:23,260 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:41:23,261 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:41:23,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:41:23,634 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 14:41:23,690 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:41:23,690 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:41:23,690 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 14:41:23,691 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:41:23,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 14:41:23,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 14:41:23,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 14:41:23,694 INFO L87 Difference]: Start difference. First operand 1604 states and 2909 transitions. Second operand 5 states. [2018-11-07 14:41:33,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:41:33,414 INFO L93 Difference]: Finished difference Result 4818 states and 8826 transitions. [2018-11-07 14:41:33,414 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 14:41:33,414 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 145 [2018-11-07 14:41:33,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:41:33,438 INFO L225 Difference]: With dead ends: 4818 [2018-11-07 14:41:33,439 INFO L226 Difference]: Without dead ends: 3220 [2018-11-07 14:41:33,446 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 14:41:33,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3220 states. [2018-11-07 14:41:33,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3220 to 3186. [2018-11-07 14:41:33,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3186 states. [2018-11-07 14:41:33,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3186 states to 3186 states and 5594 transitions. [2018-11-07 14:41:33,549 INFO L78 Accepts]: Start accepts. Automaton has 3186 states and 5594 transitions. Word has length 145 [2018-11-07 14:41:33,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:41:33,550 INFO L480 AbstractCegarLoop]: Abstraction has 3186 states and 5594 transitions. [2018-11-07 14:41:33,550 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 14:41:33,550 INFO L276 IsEmpty]: Start isEmpty. Operand 3186 states and 5594 transitions. [2018-11-07 14:41:33,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-11-07 14:41:33,554 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:41:33,554 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 14:41:33,554 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:41:33,555 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:41:33,555 INFO L82 PathProgramCache]: Analyzing trace with hash -963200243, now seen corresponding path program 1 times [2018-11-07 14:41:33,555 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:41:33,556 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:41:33,556 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:41:33,556 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:41:33,556 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:41:33,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:41:33,870 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:41:33,870 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:41:33,871 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 14:41:33,871 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:41:33,872 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 14:41:33,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 14:41:33,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 14:41:33,872 INFO L87 Difference]: Start difference. First operand 3186 states and 5594 transitions. Second operand 6 states. [2018-11-07 14:41:45,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:41:45,530 INFO L93 Difference]: Finished difference Result 11148 states and 19850 transitions. [2018-11-07 14:41:45,530 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 14:41:45,530 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 150 [2018-11-07 14:41:45,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:41:45,585 INFO L225 Difference]: With dead ends: 11148 [2018-11-07 14:41:45,586 INFO L226 Difference]: Without dead ends: 7968 [2018-11-07 14:41:45,604 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 [2018-11-07 14:41:45,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7968 states. [2018-11-07 14:41:45,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7968 to 7924. [2018-11-07 14:41:45,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7924 states. [2018-11-07 14:41:45,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7924 states to 7924 states and 13424 transitions. [2018-11-07 14:41:45,841 INFO L78 Accepts]: Start accepts. Automaton has 7924 states and 13424 transitions. Word has length 150 [2018-11-07 14:41:45,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:41:45,841 INFO L480 AbstractCegarLoop]: Abstraction has 7924 states and 13424 transitions. [2018-11-07 14:41:45,841 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 14:41:45,842 INFO L276 IsEmpty]: Start isEmpty. Operand 7924 states and 13424 transitions. [2018-11-07 14:41:45,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-11-07 14:41:45,846 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:41:45,846 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 14:41:45,846 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:41:45,846 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:41:45,847 INFO L82 PathProgramCache]: Analyzing trace with hash 1301757085, now seen corresponding path program 1 times [2018-11-07 14:41:45,847 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:41:45,848 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:41:45,848 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:41:45,848 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:41:45,848 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:41:45,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:41:46,117 WARN L179 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 14:41:46,184 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:41:46,185 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:41:46,185 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 14:41:46,185 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:41:46,186 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 14:41:46,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 14:41:46,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 14:41:46,187 INFO L87 Difference]: Start difference. First operand 7924 states and 13424 transitions. Second operand 6 states. [2018-11-07 14:41:55,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:41:55,342 INFO L93 Difference]: Finished difference Result 22224 states and 38004 transitions. [2018-11-07 14:41:55,343 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 14:41:55,343 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 158 [2018-11-07 14:41:55,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:41:55,435 INFO L225 Difference]: With dead ends: 22224 [2018-11-07 14:41:55,436 INFO L226 Difference]: Without dead ends: 14306 [2018-11-07 14:41:55,478 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 [2018-11-07 14:41:55,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14306 states. [2018-11-07 14:41:55,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14306 to 14219. [2018-11-07 14:41:55,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14219 states. [2018-11-07 14:41:55,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14219 states to 14219 states and 21550 transitions. [2018-11-07 14:41:55,869 INFO L78 Accepts]: Start accepts. Automaton has 14219 states and 21550 transitions. Word has length 158 [2018-11-07 14:41:55,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:41:55,869 INFO L480 AbstractCegarLoop]: Abstraction has 14219 states and 21550 transitions. [2018-11-07 14:41:55,870 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 14:41:55,870 INFO L276 IsEmpty]: Start isEmpty. Operand 14219 states and 21550 transitions. [2018-11-07 14:41:55,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2018-11-07 14:41:55,880 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:41:55,881 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 14:41:55,881 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:41:55,881 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:41:55,882 INFO L82 PathProgramCache]: Analyzing trace with hash -825092784, now seen corresponding path program 1 times [2018-11-07 14:41:55,882 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:41:55,883 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:41:55,883 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:41:55,883 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:41:55,883 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:41:55,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:41:56,171 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 14:41:56,334 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:41:56,335 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:41:56,335 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 14:41:56,335 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:41:56,336 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 14:41:56,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 14:41:56,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 14:41:56,336 INFO L87 Difference]: Start difference. First operand 14219 states and 21550 transitions. Second operand 6 states. [2018-11-07 14:42:05,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:42:05,062 INFO L93 Difference]: Finished difference Result 35956 states and 55845 transitions. [2018-11-07 14:42:05,063 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 14:42:05,063 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 191 [2018-11-07 14:42:05,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:42:05,152 INFO L225 Difference]: With dead ends: 35956 [2018-11-07 14:42:05,152 INFO L226 Difference]: Without dead ends: 21743 [2018-11-07 14:42:05,207 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 14:42:05,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21743 states. [2018-11-07 14:42:05,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21743 to 21651. [2018-11-07 14:42:05,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21651 states. [2018-11-07 14:42:05,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21651 states to 21651 states and 30247 transitions. [2018-11-07 14:42:05,653 INFO L78 Accepts]: Start accepts. Automaton has 21651 states and 30247 transitions. Word has length 191 [2018-11-07 14:42:05,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:42:05,653 INFO L480 AbstractCegarLoop]: Abstraction has 21651 states and 30247 transitions. [2018-11-07 14:42:05,653 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 14:42:05,654 INFO L276 IsEmpty]: Start isEmpty. Operand 21651 states and 30247 transitions. [2018-11-07 14:42:05,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 268 [2018-11-07 14:42:05,674 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:42:05,674 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 14:42:05,674 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:42:05,675 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:42:05,675 INFO L82 PathProgramCache]: Analyzing trace with hash 1239328397, now seen corresponding path program 1 times [2018-11-07 14:42:05,675 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:42:05,676 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:42:05,676 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:42:05,676 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:42:05,676 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:42:05,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:42:06,192 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 131 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-11-07 14:42:06,192 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:42:06,193 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 14:42:06,193 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:42:06,193 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 14:42:06,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 14:42:06,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-07 14:42:06,194 INFO L87 Difference]: Start difference. First operand 21651 states and 30247 transitions. Second operand 5 states. [2018-11-07 14:42:17,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:42:17,952 INFO L93 Difference]: Finished difference Result 69046 states and 98689 transitions. [2018-11-07 14:42:17,957 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 14:42:17,957 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 267 [2018-11-07 14:42:17,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:42:18,159 INFO L225 Difference]: With dead ends: 69046 [2018-11-07 14:42:18,160 INFO L226 Difference]: Without dead ends: 47401 [2018-11-07 14:42:18,234 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 14:42:18,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47401 states. [2018-11-07 14:42:19,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47401 to 46460. [2018-11-07 14:42:19,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46460 states. [2018-11-07 14:42:19,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46460 states to 46460 states and 60827 transitions. [2018-11-07 14:42:19,211 INFO L78 Accepts]: Start accepts. Automaton has 46460 states and 60827 transitions. Word has length 267 [2018-11-07 14:42:19,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:42:19,212 INFO L480 AbstractCegarLoop]: Abstraction has 46460 states and 60827 transitions. [2018-11-07 14:42:19,212 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 14:42:19,212 INFO L276 IsEmpty]: Start isEmpty. Operand 46460 states and 60827 transitions. [2018-11-07 14:42:19,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2018-11-07 14:42:19,242 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:42:19,243 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 14:42:19,243 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:42:19,243 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:42:19,244 INFO L82 PathProgramCache]: Analyzing trace with hash 866225877, now seen corresponding path program 1 times [2018-11-07 14:42:19,244 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:42:19,251 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:42:19,251 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:42:19,251 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:42:19,251 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:42:19,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:42:19,768 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 128 proven. 75 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 14:42:19,768 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 14:42:19,768 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 14:42:19,769 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 272 with the following transitions: [2018-11-07 14:42:19,772 INFO L202 CegarAbsIntRunner]: [0], [1], [1868], [1875], [1883], [1891], [1899], [1907], [1915], [1923], [1931], [1939], [1947], [1955], [1963], [1971], [1979], [1987], [1995], [2003], [2011], [2019], [2027], [2035], [2043], [2051], [2059], [2067], [2075], [2083], [2091], [2099], [2107], [2115], [2123], [2131], [2139], [2147], [2155], [2163], [2171], [2179], [2187], [2195], [2203], [2211], [2219], [2227], [2235], [2243], [2251], [2259], [2267], [2275], [2283], [2291], [2299], [2307], [2315], [2323], [2331], [2335], [2337], [2340], [2348], [2356], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2400], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2560], [3240], [3244], [3248], [3254], [3258], [3260], [3271], [3272], [3273], [3275], [3276] [2018-11-07 14:42:19,833 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 14:42:19,833 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 14:42:20,524 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 14:42:20,526 INFO L272 AbstractInterpreter]: Visited 125 different actions 125 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-11-07 14:42:20,577 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:42:20,578 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 14:42:21,260 INFO L227 lantSequenceWeakener]: Weakened 262 states. On average, predicates are now at 75.77% of their original sizes. [2018-11-07 14:42:21,261 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 14:42:21,751 INFO L415 sIntCurrentIteration]: We unified 270 AI predicates to 270 [2018-11-07 14:42:21,751 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 14:42:21,752 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 14:42:21,752 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [5] total 11 [2018-11-07 14:42:21,752 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:42:21,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-07 14:42:21,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-07 14:42:21,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-07 14:42:21,754 INFO L87 Difference]: Start difference. First operand 46460 states and 60827 transitions. Second operand 8 states. [2018-11-07 14:42:28,323 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown