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-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label46_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 09:50:37,160 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 09:50:37,163 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 09:50:37,175 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 09:50:37,176 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 09:50:37,177 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 09:50:37,178 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 09:50:37,180 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 09:50:37,181 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 09:50:37,182 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 09:50:37,183 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 09:50:37,184 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 09:50:37,185 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 09:50:37,188 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 09:50:37,189 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 09:50:37,190 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 09:50:37,193 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 09:50:37,196 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 09:50:37,204 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 09:50:37,210 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 09:50:37,212 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 09:50:37,215 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 09:50:37,217 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 09:50:37,217 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 09:50:37,217 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 09:50:37,220 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 09:50:37,221 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 09:50:37,222 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 09:50:37,225 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 09:50:37,227 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 09:50:37,227 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 09:50:37,228 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 09:50:37,228 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 09:50:37,228 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 09:50:37,231 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 09:50:37,231 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 09:50:37,232 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-11-07 09:50:37,261 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 09:50:37,261 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 09:50:37,262 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 09:50:37,263 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 09:50:37,263 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 09:50:37,263 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 09:50:37,263 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-07 09:50:37,263 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 09:50:37,263 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 09:50:37,264 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 09:50:37,264 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 09:50:37,264 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 09:50:37,264 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 09:50:37,264 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 09:50:37,268 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 09:50:37,268 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 09:50:37,268 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 09:50:37,270 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 09:50:37,270 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 09:50:37,271 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 09:50:37,271 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 09:50:37,271 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 09:50:37,271 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 09:50:37,271 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 09:50:37,272 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 09:50:37,272 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 09:50:37,272 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 09:50:37,272 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 09:50:37,273 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 09:50:37,273 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 09:50:37,273 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 09:50:37,273 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 09:50:37,273 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 09:50:37,274 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 09:50:37,274 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 09:50:37,274 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 09:50:37,324 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 09:50:37,337 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 09:50:37,340 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 09:50:37,342 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 09:50:37,342 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 09:50:37,343 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label46_true-unreach-call.c [2018-11-07 09:50:37,401 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a81b1bd7/3b1a6620f22f4be792f3bf2ce89bb713/FLAG6e2331a14 [2018-11-07 09:50:38,287 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 09:50:38,288 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label46_true-unreach-call.c [2018-11-07 09:50:38,340 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a81b1bd7/3b1a6620f22f4be792f3bf2ce89bb713/FLAG6e2331a14 [2018-11-07 09:50:38,361 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a81b1bd7/3b1a6620f22f4be792f3bf2ce89bb713 [2018-11-07 09:50:38,377 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 09:50:38,379 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 09:50:38,380 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 09:50:38,380 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 09:50:38,386 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 09:50:38,387 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:50:38" (1/1) ... [2018-11-07 09:50:38,391 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bdc3850 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:50:38, skipping insertion in model container [2018-11-07 09:50:38,391 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:50:38" (1/1) ... [2018-11-07 09:50:38,403 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 09:50:38,661 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 09:50:40,919 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 09:50:40,924 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 09:50:42,145 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 09:50:42,199 INFO L193 MainTranslator]: Completed translation [2018-11-07 09:50:42,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:50:42 WrapperNode [2018-11-07 09:50:42,200 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 09:50:42,201 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 09:50:42,201 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 09:50:42,201 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 09:50:42,212 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:50:42" (1/1) ... [2018-11-07 09:50:42,708 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:50:42" (1/1) ... [2018-11-07 09:50:42,721 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 09:50:42,721 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 09:50:42,722 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 09:50:42,722 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 09:50:42,733 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:50:42" (1/1) ... [2018-11-07 09:50:42,733 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:50:42" (1/1) ... [2018-11-07 09:50:42,802 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:50:42" (1/1) ... [2018-11-07 09:50:42,802 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:50:42" (1/1) ... [2018-11-07 09:50:43,001 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:50:42" (1/1) ... [2018-11-07 09:50:43,057 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:50:42" (1/1) ... [2018-11-07 09:50:43,148 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:50:42" (1/1) ... [2018-11-07 09:50:43,269 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 09:50:43,270 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 09:50:43,270 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 09:50:43,270 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 09:50:43,272 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:50:42" (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 09:50:43,350 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 09:50:43,351 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 09:50:43,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 09:50:43,351 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2018-11-07 09:50:43,351 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2018-11-07 09:50:43,351 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2018-11-07 09:50:43,352 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2018-11-07 09:50:43,352 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 09:50:43,352 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 09:50:43,352 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 09:50:43,352 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 09:50:43,353 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 09:50:43,353 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 09:50:43,354 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 09:50:43,354 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 09:50:43,354 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 09:50:43,354 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 09:50:43,355 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 09:50:43,355 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 09:51:00,723 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 09:51:00,724 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:51:00 BoogieIcfgContainer [2018-11-07 09:51:00,724 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 09:51:00,725 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 09:51:00,725 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 09:51:00,729 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 09:51:00,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 09:50:38" (1/3) ... [2018-11-07 09:51:00,730 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e22adc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:51:00, skipping insertion in model container [2018-11-07 09:51:00,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:50:42" (2/3) ... [2018-11-07 09:51:00,731 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e22adc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:51:00, skipping insertion in model container [2018-11-07 09:51:00,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:51:00" (3/3) ... [2018-11-07 09:51:00,733 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label46_true-unreach-call.c [2018-11-07 09:51:00,744 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 09:51:00,757 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 09:51:00,772 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 09:51:00,833 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 09:51:00,833 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 09:51:00,833 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 09:51:00,833 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 09:51:00,833 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 09:51:00,834 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 09:51:00,834 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 09:51:00,834 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 09:51:00,905 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states. [2018-11-07 09:51:00,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-11-07 09:51:00,913 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:51:00,914 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] [2018-11-07 09:51:00,917 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:51:00,922 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:51:00,923 INFO L82 PathProgramCache]: Analyzing trace with hash -1162017062, now seen corresponding path program 1 times [2018-11-07 09:51:00,926 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:51:00,978 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:51:00,979 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:51:00,979 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:51:00,979 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:51:01,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:51:01,360 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 09:51:01,472 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 09:51:01,475 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:51:01,476 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 09:51:01,476 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:51:01,484 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 09:51:01,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 09:51:01,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 09:51:01,506 INFO L87 Difference]: Start difference. First operand 1778 states. Second operand 3 states. [2018-11-07 09:51:14,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:51:14,733 INFO L93 Difference]: Finished difference Result 4998 states and 9417 transitions. [2018-11-07 09:51:14,738 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 09:51:14,739 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 39 [2018-11-07 09:51:14,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:51:14,786 INFO L225 Difference]: With dead ends: 4998 [2018-11-07 09:51:14,787 INFO L226 Difference]: Without dead ends: 3218 [2018-11-07 09:51:14,801 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 [2018-11-07 09:51:14,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3218 states. [2018-11-07 09:51:15,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3218 to 3215. [2018-11-07 09:51:15,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3215 states. [2018-11-07 09:51:15,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3215 states to 3215 states and 5854 transitions. [2018-11-07 09:51:15,050 INFO L78 Accepts]: Start accepts. Automaton has 3215 states and 5854 transitions. Word has length 39 [2018-11-07 09:51:15,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:51:15,051 INFO L480 AbstractCegarLoop]: Abstraction has 3215 states and 5854 transitions. [2018-11-07 09:51:15,051 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 09:51:15,051 INFO L276 IsEmpty]: Start isEmpty. Operand 3215 states and 5854 transitions. [2018-11-07 09:51:15,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2018-11-07 09:51:15,063 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:51:15,064 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:51:15,064 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:51:15,064 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:51:15,065 INFO L82 PathProgramCache]: Analyzing trace with hash 1856451076, now seen corresponding path program 1 times [2018-11-07 09:51:15,065 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:51:15,067 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:51:15,070 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:51:15,070 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:51:15,071 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:51:15,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:51:15,489 WARN L179 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 09:51:15,897 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:51:15,898 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:51:15,898 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 09:51:15,898 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:51:15,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 09:51:15,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 09:51:15,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 09:51:15,902 INFO L87 Difference]: Start difference. First operand 3215 states and 5854 transitions. Second operand 6 states. [2018-11-07 09:51:38,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:51:38,989 INFO L93 Difference]: Finished difference Result 9340 states and 16946 transitions. [2018-11-07 09:51:38,993 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 09:51:38,993 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 111 [2018-11-07 09:51:38,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:51:39,030 INFO L225 Difference]: With dead ends: 9340 [2018-11-07 09:51:39,031 INFO L226 Difference]: Without dead ends: 6131 [2018-11-07 09:51:39,043 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 09:51:39,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6131 states. [2018-11-07 09:51:39,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6131 to 6091. [2018-11-07 09:51:39,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6091 states. [2018-11-07 09:51:39,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6091 states to 6091 states and 9637 transitions. [2018-11-07 09:51:39,246 INFO L78 Accepts]: Start accepts. Automaton has 6091 states and 9637 transitions. Word has length 111 [2018-11-07 09:51:39,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:51:39,247 INFO L480 AbstractCegarLoop]: Abstraction has 6091 states and 9637 transitions. [2018-11-07 09:51:39,247 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 09:51:39,247 INFO L276 IsEmpty]: Start isEmpty. Operand 6091 states and 9637 transitions. [2018-11-07 09:51:39,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2018-11-07 09:51:39,254 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:51:39,254 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:51:39,254 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:51:39,254 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:51:39,256 INFO L82 PathProgramCache]: Analyzing trace with hash 1738587407, now seen corresponding path program 1 times [2018-11-07 09:51:39,256 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:51:39,260 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:51:39,260 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:51:39,260 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:51:39,261 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:51:39,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:51:39,647 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:51:39,648 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:51:39,648 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 09:51:39,648 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:51:39,649 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 09:51:39,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 09:51:39,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 09:51:39,650 INFO L87 Difference]: Start difference. First operand 6091 states and 9637 transitions. Second operand 6 states. [2018-11-07 09:52:00,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:52:00,306 INFO L93 Difference]: Finished difference Result 21091 states and 34228 transitions. [2018-11-07 09:52:00,315 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 09:52:00,316 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 113 [2018-11-07 09:52:00,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:52:00,391 INFO L225 Difference]: With dead ends: 21091 [2018-11-07 09:52:00,391 INFO L226 Difference]: Without dead ends: 15006 [2018-11-07 09:52:00,418 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 09:52:00,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15006 states. [2018-11-07 09:52:00,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15006 to 14817. [2018-11-07 09:52:00,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14817 states. [2018-11-07 09:52:00,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14817 states to 14817 states and 22424 transitions. [2018-11-07 09:52:00,831 INFO L78 Accepts]: Start accepts. Automaton has 14817 states and 22424 transitions. Word has length 113 [2018-11-07 09:52:00,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:52:00,832 INFO L480 AbstractCegarLoop]: Abstraction has 14817 states and 22424 transitions. [2018-11-07 09:52:00,832 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 09:52:00,832 INFO L276 IsEmpty]: Start isEmpty. Operand 14817 states and 22424 transitions. [2018-11-07 09:52:00,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-11-07 09:52:00,841 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:52:00,841 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:52:00,841 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:52:00,841 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:52:00,842 INFO L82 PathProgramCache]: Analyzing trace with hash 1196319888, now seen corresponding path program 1 times [2018-11-07 09:52:00,842 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:52:00,847 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:52:00,847 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:52:00,847 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:52:00,847 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:52:00,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:52:01,260 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:52:01,260 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:52:01,261 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 09:52:01,261 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:52:01,261 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 09:52:01,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 09:52:01,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2018-11-07 09:52:01,262 INFO L87 Difference]: Start difference. First operand 14817 states and 22424 transitions. Second operand 6 states. [2018-11-07 09:52:29,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:52:29,078 INFO L93 Difference]: Finished difference Result 58670 states and 93377 transitions. [2018-11-07 09:52:29,078 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 09:52:29,078 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 135 [2018-11-07 09:52:29,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:52:29,329 INFO L225 Difference]: With dead ends: 58670 [2018-11-07 09:52:29,329 INFO L226 Difference]: Without dead ends: 43859 [2018-11-07 09:52:29,423 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2018-11-07 09:52:29,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43859 states. [2018-11-07 09:52:30,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43859 to 43763. [2018-11-07 09:52:30,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43763 states. [2018-11-07 09:52:30,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43763 states to 43763 states and 63256 transitions. [2018-11-07 09:52:30,785 INFO L78 Accepts]: Start accepts. Automaton has 43763 states and 63256 transitions. Word has length 135 [2018-11-07 09:52:30,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:52:30,786 INFO L480 AbstractCegarLoop]: Abstraction has 43763 states and 63256 transitions. [2018-11-07 09:52:30,786 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 09:52:30,786 INFO L276 IsEmpty]: Start isEmpty. Operand 43763 states and 63256 transitions. [2018-11-07 09:52:30,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2018-11-07 09:52:30,790 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:52:30,790 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:52:30,790 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:52:30,790 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:52:30,793 INFO L82 PathProgramCache]: Analyzing trace with hash -307863100, now seen corresponding path program 1 times [2018-11-07 09:52:30,794 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:52:30,794 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:52:30,794 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:52:30,796 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:52:30,796 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:52:30,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:52:31,117 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:52:31,117 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:52:31,118 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 09:52:31,118 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:52:31,118 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 09:52:31,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 09:52:31,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 09:52:31,119 INFO L87 Difference]: Start difference. First operand 43763 states and 63256 transitions. Second operand 5 states. [2018-11-07 09:52:49,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:52:49,095 INFO L93 Difference]: Finished difference Result 132472 states and 204634 transitions. [2018-11-07 09:52:49,096 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 09:52:49,096 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 144 [2018-11-07 09:52:49,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:52:49,496 INFO L225 Difference]: With dead ends: 132472 [2018-11-07 09:52:49,496 INFO L226 Difference]: Without dead ends: 88715 [2018-11-07 09:52:49,620 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-11-07 09:52:49,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88715 states. [2018-11-07 09:52:51,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88715 to 87947. [2018-11-07 09:52:51,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87947 states. [2018-11-07 09:52:51,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87947 states to 87947 states and 121052 transitions. [2018-11-07 09:52:51,535 INFO L78 Accepts]: Start accepts. Automaton has 87947 states and 121052 transitions. Word has length 144 [2018-11-07 09:52:51,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:52:51,536 INFO L480 AbstractCegarLoop]: Abstraction has 87947 states and 121052 transitions. [2018-11-07 09:52:51,536 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 09:52:51,536 INFO L276 IsEmpty]: Start isEmpty. Operand 87947 states and 121052 transitions. [2018-11-07 09:52:51,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-11-07 09:52:51,543 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:52:51,543 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:52:51,544 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:52:51,546 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:52:51,546 INFO L82 PathProgramCache]: Analyzing trace with hash 1334386755, now seen corresponding path program 1 times [2018-11-07 09:52:51,546 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:52:51,548 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:52:51,548 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:52:51,548 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:52:51,549 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:52:51,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:52:51,828 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 09:52:52,068 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:52:52,069 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:52:52,069 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 09:52:52,069 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:52:52,070 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 09:52:52,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 09:52:52,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 09:52:52,070 INFO L87 Difference]: Start difference. First operand 87947 states and 121052 transitions. Second operand 6 states. [2018-11-07 09:53:12,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:53:12,418 INFO L93 Difference]: Finished difference Result 207599 states and 303896 transitions. [2018-11-07 09:53:12,419 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 09:53:12,419 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 172 [2018-11-07 09:53:12,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:53:12,889 INFO L225 Difference]: With dead ends: 207599 [2018-11-07 09:53:12,889 INFO L226 Difference]: Without dead ends: 119658 [2018-11-07 09:53:13,070 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 09:53:13,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119658 states. [2018-11-07 09:53:14,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119658 to 119248. [2018-11-07 09:53:14,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119248 states. [2018-11-07 09:53:15,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119248 states to 119248 states and 160206 transitions. [2018-11-07 09:53:15,059 INFO L78 Accepts]: Start accepts. Automaton has 119248 states and 160206 transitions. Word has length 172 [2018-11-07 09:53:15,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:53:15,060 INFO L480 AbstractCegarLoop]: Abstraction has 119248 states and 160206 transitions. [2018-11-07 09:53:15,060 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 09:53:15,060 INFO L276 IsEmpty]: Start isEmpty. Operand 119248 states and 160206 transitions. [2018-11-07 09:53:15,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-11-07 09:53:15,073 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:53:15,074 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 09:53:15,074 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:53:15,074 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:53:15,075 INFO L82 PathProgramCache]: Analyzing trace with hash -857501470, now seen corresponding path program 1 times [2018-11-07 09:53:15,075 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:53:15,075 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:53:15,076 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:53:15,076 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:53:15,076 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:53:15,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:53:15,344 WARN L179 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 09:53:15,656 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 64 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 09:53:15,656 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:53:15,657 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:53:15,658 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 211 with the following transitions: [2018-11-07 09:53:15,660 INFO L202 CegarAbsIntRunner]: [0], [1], [5227], [5234], [5242], [5250], [5258], [5266], [5274], [5282], [5290], [5298], [5306], [5314], [5322], [5330], [5338], [5346], [5354], [5362], [5370], [5378], [5386], [5394], [5402], [5410], [5418], [5426], [5434], [5438], [5440], [5443], [5451], [5459], [5467], [5475], [5483], [5491], [5499], [5507], [5515], [5523], [5531], [5539], [5547], [5555], [5563], [5571], [5579], [5587], [5595], [5603], [5611], [5619], [5627], [5635], [5643], [5651], [5659], [5667], [5675], [5683], [5691], [5699], [5707], [5715], [5719], [5722], [5726], [5727], [5731], [5742], [5746], [5750], [5754], [5758], [5762], [5766], [5770], [5774], [5778], [5782], [5786], [5797], [5808], [5819], [5823], [5827], [5838], [5842], [5846], [5850], [5854], [5858], [5862], [5866], [5870], [5874], [5877], [6802], [6806], [6810], [6816], [6820], [6822], [6837], [6838], [6839], [6841], [6842] [2018-11-07 09:53:15,718 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:53:15,718 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:53:16,327 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 09:53:16,329 INFO L272 AbstractInterpreter]: Visited 104 different actions 104 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-11-07 09:53:16,371 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:53:16,371 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 09:53:16,837 INFO L227 lantSequenceWeakener]: Weakened 199 states. On average, predicates are now at 75.4% of their original sizes. [2018-11-07 09:53:16,837 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 09:53:16,976 INFO L415 sIntCurrentIteration]: We unified 209 AI predicates to 209 [2018-11-07 09:53:16,977 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 09:53:16,978 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 09:53:16,978 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2018-11-07 09:53:16,978 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:53:16,979 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 09:53:16,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 09:53:16,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 09:53:16,979 INFO L87 Difference]: Start difference. First operand 119248 states and 160206 transitions. Second operand 6 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown