java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label37_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 15:26:47,158 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 15:26:47,160 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 15:26:47,172 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 15:26:47,172 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 15:26:47,173 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 15:26:47,175 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 15:26:47,177 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 15:26:47,178 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 15:26:47,179 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 15:26:47,180 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 15:26:47,181 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 15:26:47,182 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 15:26:47,183 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 15:26:47,184 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 15:26:47,185 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 15:26:47,186 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 15:26:47,188 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 15:26:47,190 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 15:26:47,192 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 15:26:47,193 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 15:26:47,194 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 15:26:47,197 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 15:26:47,197 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 15:26:47,197 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 15:26:47,198 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 15:26:47,199 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 15:26:47,200 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 15:26:47,201 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 15:26:47,202 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 15:26:47,202 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 15:26:47,203 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-12 15:26:47,203 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-12 15:26:47,204 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-12 15:26:47,205 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-12 15:26:47,206 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-12 15:26:47,206 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-12 15:26:47,222 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 15:26:47,223 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 15:26:47,223 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 15:26:47,224 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 15:26:47,224 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 15:26:47,224 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 15:26:47,224 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 15:26:47,224 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 15:26:47,225 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 15:26:47,225 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 15:26:47,225 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 15:26:47,225 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 15:26:47,225 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 15:26:47,226 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 15:26:47,226 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 15:26:47,227 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 15:26:47,227 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 15:26:47,227 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 15:26:47,227 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 15:26:47,227 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 15:26:47,227 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 15:26:47,228 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 15:26:47,228 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 15:26:47,228 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 15:26:47,228 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 15:26:47,228 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 15:26:47,229 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 15:26:47,229 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 15:26:47,229 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 15:26:47,229 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 15:26:47,229 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 15:26:47,230 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 15:26:47,230 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 15:26:47,230 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 15:26:47,230 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 15:26:47,276 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 15:26:47,295 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 15:26:47,300 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 15:26:47,302 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 15:26:47,302 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 15:26:47,303 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label37_false-unreach-call.c [2018-11-12 15:26:47,374 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb4e70496/27fe189385a346e7b693740be078cdcf/FLAG36e87c358 [2018-11-12 15:26:48,064 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 15:26:48,065 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label37_false-unreach-call.c [2018-11-12 15:26:48,087 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb4e70496/27fe189385a346e7b693740be078cdcf/FLAG36e87c358 [2018-11-12 15:26:48,107 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/eb4e70496/27fe189385a346e7b693740be078cdcf [2018-11-12 15:26:48,119 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 15:26:48,121 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 15:26:48,124 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 15:26:48,124 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 15:26:48,128 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 15:26:48,129 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 03:26:48" (1/1) ... [2018-11-12 15:26:48,133 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@102ece and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 03:26:48, skipping insertion in model container [2018-11-12 15:26:48,133 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 03:26:48" (1/1) ... [2018-11-12 15:26:48,145 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 15:26:48,254 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 15:26:49,033 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 15:26:49,039 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 15:26:49,315 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 15:26:49,338 INFO L193 MainTranslator]: Completed translation [2018-11-12 15:26:49,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 03:26:49 WrapperNode [2018-11-12 15:26:49,339 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 15:26:49,340 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 15:26:49,340 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 15:26:49,340 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 15:26:49,510 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 03:26:49" (1/1) ... [2018-11-12 15:26:49,560 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 03:26:49" (1/1) ... [2018-11-12 15:26:49,570 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 15:26:49,570 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 15:26:49,571 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 15:26:49,571 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 15:26:49,583 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 03:26:49" (1/1) ... [2018-11-12 15:26:49,583 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 03:26:49" (1/1) ... [2018-11-12 15:26:49,598 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 03:26:49" (1/1) ... [2018-11-12 15:26:49,599 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 03:26:49" (1/1) ... [2018-11-12 15:26:49,689 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 03:26:49" (1/1) ... [2018-11-12 15:26:49,715 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 03:26:49" (1/1) ... [2018-11-12 15:26:49,735 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 03:26:49" (1/1) ... [2018-11-12 15:26:49,749 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 15:26:49,750 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 15:26:49,750 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 15:26:49,750 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 15:26:49,751 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 03:26:49" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 15:26:49,827 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-12 15:26:49,827 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 15:26:49,827 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 15:26:49,828 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-12 15:26:49,828 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-12 15:26:49,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 15:26:49,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 15:26:49,829 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 15:26:49,829 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 15:26:54,880 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 15:26:54,881 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 03:26:54 BoogieIcfgContainer [2018-11-12 15:26:54,881 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 15:26:54,883 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 15:26:54,883 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 15:26:54,887 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 15:26:54,888 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 03:26:48" (1/3) ... [2018-11-12 15:26:54,889 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54725af1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 03:26:54, skipping insertion in model container [2018-11-12 15:26:54,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 03:26:49" (2/3) ... [2018-11-12 15:26:54,890 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54725af1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 03:26:54, skipping insertion in model container [2018-11-12 15:26:54,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 03:26:54" (3/3) ... [2018-11-12 15:26:54,892 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label37_false-unreach-call.c [2018-11-12 15:26:54,903 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 15:26:54,913 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 15:26:54,933 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 15:26:54,974 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 15:26:54,975 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 15:26:54,975 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 15:26:54,975 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 15:26:54,975 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 15:26:54,975 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 15:26:54,976 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 15:26:54,976 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 15:26:55,006 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-11-12 15:26:55,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-11-12 15:26:55,024 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 15:26:55,025 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 15:26:55,028 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 15:26:55,034 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 15:26:55,035 INFO L82 PathProgramCache]: Analyzing trace with hash 182730809, now seen corresponding path program 1 times [2018-11-12 15:26:55,038 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 15:26:55,097 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 15:26:55,097 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 15:26:55,098 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 15:26:55,098 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 15:26:55,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 15:26:55,927 WARN L179 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 15:26:56,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 15:26:56,142 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 15:26:56,142 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-12 15:26:56,143 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 15:26:56,150 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 15:26:56,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 15:26:56,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 15:26:56,174 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 3 states. [2018-11-12 15:26:58,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 15:26:58,275 INFO L93 Difference]: Finished difference Result 845 states and 1487 transitions. [2018-11-12 15:26:58,275 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 15:26:58,276 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 156 [2018-11-12 15:26:58,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 15:26:58,298 INFO L225 Difference]: With dead ends: 845 [2018-11-12 15:26:58,298 INFO L226 Difference]: Without dead ends: 531 [2018-11-12 15:26:58,306 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 15:26:58,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 531 states. [2018-11-12 15:26:58,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 531 to 530. [2018-11-12 15:26:58,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 530 states. [2018-11-12 15:26:58,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 869 transitions. [2018-11-12 15:26:58,395 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 869 transitions. Word has length 156 [2018-11-12 15:26:58,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 15:26:58,396 INFO L480 AbstractCegarLoop]: Abstraction has 530 states and 869 transitions. [2018-11-12 15:26:58,397 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 15:26:58,397 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 869 transitions. [2018-11-12 15:26:58,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2018-11-12 15:26:58,407 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 15:26:58,407 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 15:26:58,408 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 15:26:58,408 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 15:26:58,408 INFO L82 PathProgramCache]: Analyzing trace with hash 2037660448, now seen corresponding path program 1 times [2018-11-12 15:26:58,408 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 15:26:58,410 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 15:26:58,410 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 15:26:58,411 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 15:26:58,411 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 15:26:58,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 15:26:58,717 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 15:26:58,717 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 15:26:58,718 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 15:26:58,718 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 15:26:58,720 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 15:26:58,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 15:26:58,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 15:26:58,721 INFO L87 Difference]: Start difference. First operand 530 states and 869 transitions. Second operand 6 states. [2018-11-12 15:27:02,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 15:27:02,248 INFO L93 Difference]: Finished difference Result 1599 states and 2688 transitions. [2018-11-12 15:27:02,248 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-12 15:27:02,249 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 166 [2018-11-12 15:27:02,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 15:27:02,259 INFO L225 Difference]: With dead ends: 1599 [2018-11-12 15:27:02,260 INFO L226 Difference]: Without dead ends: 1075 [2018-11-12 15:27:02,263 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-12 15:27:02,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1075 states. [2018-11-12 15:27:02,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1075 to 1034. [2018-11-12 15:27:02,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1034 states. [2018-11-12 15:27:02,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1034 states to 1034 states and 1689 transitions. [2018-11-12 15:27:02,330 INFO L78 Accepts]: Start accepts. Automaton has 1034 states and 1689 transitions. Word has length 166 [2018-11-12 15:27:02,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 15:27:02,331 INFO L480 AbstractCegarLoop]: Abstraction has 1034 states and 1689 transitions. [2018-11-12 15:27:02,331 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 15:27:02,331 INFO L276 IsEmpty]: Start isEmpty. Operand 1034 states and 1689 transitions. [2018-11-12 15:27:02,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2018-11-12 15:27:02,338 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 15:27:02,338 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 15:27:02,338 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 15:27:02,339 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 15:27:02,339 INFO L82 PathProgramCache]: Analyzing trace with hash 1179442109, now seen corresponding path program 1 times [2018-11-12 15:27:02,339 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 15:27:02,340 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 15:27:02,340 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 15:27:02,340 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 15:27:02,341 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 15:27:02,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 15:27:02,628 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 15:27:02,629 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 15:27:02,629 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-12 15:27:02,629 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 15:27:02,630 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 15:27:02,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 15:27:02,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 15:27:02,633 INFO L87 Difference]: Start difference. First operand 1034 states and 1689 transitions. Second operand 3 states. [2018-11-12 15:27:05,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 15:27:05,454 INFO L93 Difference]: Finished difference Result 2929 states and 4967 transitions. [2018-11-12 15:27:05,456 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 15:27:05,457 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 169 [2018-11-12 15:27:05,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 15:27:05,474 INFO L225 Difference]: With dead ends: 2929 [2018-11-12 15:27:05,475 INFO L226 Difference]: Without dead ends: 1901 [2018-11-12 15:27:05,481 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 15:27:05,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1901 states. [2018-11-12 15:27:05,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1901 to 1879. [2018-11-12 15:27:05,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1879 states. [2018-11-12 15:27:05,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1879 states to 1879 states and 3071 transitions. [2018-11-12 15:27:05,564 INFO L78 Accepts]: Start accepts. Automaton has 1879 states and 3071 transitions. Word has length 169 [2018-11-12 15:27:05,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 15:27:05,565 INFO L480 AbstractCegarLoop]: Abstraction has 1879 states and 3071 transitions. [2018-11-12 15:27:05,565 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 15:27:05,565 INFO L276 IsEmpty]: Start isEmpty. Operand 1879 states and 3071 transitions. [2018-11-12 15:27:05,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2018-11-12 15:27:05,580 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 15:27:05,580 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 15:27:05,580 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 15:27:05,581 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 15:27:05,582 INFO L82 PathProgramCache]: Analyzing trace with hash 71402321, now seen corresponding path program 1 times [2018-11-12 15:27:05,582 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 15:27:05,583 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 15:27:05,583 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 15:27:05,583 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 15:27:05,583 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 15:27:05,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 15:27:05,907 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 15:27:05,907 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 15:27:05,907 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-12 15:27:05,907 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 15:27:05,908 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-12 15:27:05,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-12 15:27:05,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-12 15:27:05,909 INFO L87 Difference]: Start difference. First operand 1879 states and 3071 transitions. Second operand 7 states. [2018-11-12 15:27:08,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 15:27:08,335 INFO L93 Difference]: Finished difference Result 5724 states and 10172 transitions. [2018-11-12 15:27:08,335 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 15:27:08,336 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 175 [2018-11-12 15:27:08,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 15:27:08,365 INFO L225 Difference]: With dead ends: 5724 [2018-11-12 15:27:08,366 INFO L226 Difference]: Without dead ends: 3851 [2018-11-12 15:27:08,373 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2018-11-12 15:27:08,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3851 states. [2018-11-12 15:27:08,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3851 to 3742. [2018-11-12 15:27:08,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3742 states. [2018-11-12 15:27:08,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3742 states to 3742 states and 6337 transitions. [2018-11-12 15:27:08,525 INFO L78 Accepts]: Start accepts. Automaton has 3742 states and 6337 transitions. Word has length 175 [2018-11-12 15:27:08,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 15:27:08,526 INFO L480 AbstractCegarLoop]: Abstraction has 3742 states and 6337 transitions. [2018-11-12 15:27:08,526 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-12 15:27:08,526 INFO L276 IsEmpty]: Start isEmpty. Operand 3742 states and 6337 transitions. [2018-11-12 15:27:08,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2018-11-12 15:27:08,538 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 15:27:08,538 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 15:27:08,539 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 15:27:08,539 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 15:27:08,539 INFO L82 PathProgramCache]: Analyzing trace with hash -602294345, now seen corresponding path program 1 times [2018-11-12 15:27:08,539 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 15:27:08,540 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 15:27:08,540 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 15:27:08,540 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 15:27:08,541 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 15:27:08,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 15:27:08,816 WARN L179 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-11-12 15:27:09,222 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 22 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-12 15:27:09,222 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 15:27:09,222 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 15:27:09,224 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 185 with the following transitions: [2018-11-12 15:27:09,226 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [16], [17], [21], [25], [29], [33], [37], [41], [45], [48], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [709], [711], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-12 15:27:09,287 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 15:27:09,287 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 15:27:10,768 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 15:27:10,770 INFO L272 AbstractInterpreter]: Visited 157 different actions 157 times. Never merged. Never widened. Performed 2957 root evaluator evaluations with a maximum evaluation depth of 6. Performed 2957 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Never found a fixpoint. Largest state had 88 variables. [2018-11-12 15:27:10,825 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 15:27:10,825 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 15:27:12,128 INFO L227 lantSequenceWeakener]: Weakened 175 states. On average, predicates are now at 70.25% of their original sizes. [2018-11-12 15:27:12,129 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 15:27:13,677 INFO L415 sIntCurrentIteration]: We unified 183 AI predicates to 183 [2018-11-12 15:27:13,677 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 15:27:13,679 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 15:27:13,679 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [22] imperfect sequences [6] total 26 [2018-11-12 15:27:13,679 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 15:27:13,680 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-11-12 15:27:13,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-11-12 15:27:13,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=350, Unknown=0, NotChecked=0, Total=462 [2018-11-12 15:27:13,681 INFO L87 Difference]: Start difference. First operand 3742 states and 6337 transitions. Second operand 22 states. [2018-11-12 15:28:10,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 15:28:10,734 INFO L93 Difference]: Finished difference Result 7688 states and 12984 transitions. [2018-11-12 15:28:10,734 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-12 15:28:10,734 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 184 [2018-11-12 15:28:10,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 15:28:10,753 INFO L225 Difference]: With dead ends: 7688 [2018-11-12 15:28:10,754 INFO L226 Difference]: Without dead ends: 3952 [2018-11-12 15:28:10,765 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 186 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=158, Invalid=442, Unknown=0, NotChecked=0, Total=600 [2018-11-12 15:28:10,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3952 states. [2018-11-12 15:28:10,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3952 to 3950. [2018-11-12 15:28:10,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3950 states. [2018-11-12 15:28:10,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3950 states to 3950 states and 6553 transitions. [2018-11-12 15:28:10,876 INFO L78 Accepts]: Start accepts. Automaton has 3950 states and 6553 transitions. Word has length 184 [2018-11-12 15:28:10,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 15:28:10,876 INFO L480 AbstractCegarLoop]: Abstraction has 3950 states and 6553 transitions. [2018-11-12 15:28:10,876 INFO L481 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-11-12 15:28:10,876 INFO L276 IsEmpty]: Start isEmpty. Operand 3950 states and 6553 transitions. [2018-11-12 15:28:10,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-11-12 15:28:10,888 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 15:28:10,888 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 15:28:10,889 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 15:28:10,889 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 15:28:10,889 INFO L82 PathProgramCache]: Analyzing trace with hash -1051999046, now seen corresponding path program 1 times [2018-11-12 15:28:10,889 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 15:28:10,890 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 15:28:10,890 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 15:28:10,891 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 15:28:10,891 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 15:28:10,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 15:28:11,103 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 46 proven. 9 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2018-11-12 15:28:11,103 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 15:28:11,103 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 15:28:11,104 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 197 with the following transitions: [2018-11-12 15:28:11,104 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [16], [17], [21], [24], [25], [29], [33], [37], [41], [45], [48], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [709], [711], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-12 15:28:11,114 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 15:28:11,114 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 15:28:13,523 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 15:28:13,524 INFO L272 AbstractInterpreter]: Visited 161 different actions 316 times. Merged at 5 different actions 5 times. Never widened. Performed 8821 root evaluator evaluations with a maximum evaluation depth of 6. Performed 8821 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-11-12 15:28:13,555 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 15:28:13,555 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 15:28:15,603 INFO L227 lantSequenceWeakener]: Weakened 133 states. On average, predicates are now at 71.08% of their original sizes. [2018-11-12 15:28:15,603 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 15:28:19,445 INFO L415 sIntCurrentIteration]: We unified 195 AI predicates to 195 [2018-11-12 15:28:19,445 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 15:28:19,446 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 15:28:19,446 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [31] imperfect sequences [6] total 35 [2018-11-12 15:28:19,447 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 15:28:19,448 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-11-12 15:28:19,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-11-12 15:28:19,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=754, Unknown=0, NotChecked=0, Total=930 [2018-11-12 15:28:19,449 INFO L87 Difference]: Start difference. First operand 3950 states and 6553 transitions. Second operand 31 states. [2018-11-12 15:29:38,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 15:29:38,564 INFO L93 Difference]: Finished difference Result 8115 states and 13588 transitions. [2018-11-12 15:29:38,565 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-11-12 15:29:38,565 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 196 [2018-11-12 15:29:38,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 15:29:38,587 INFO L225 Difference]: With dead ends: 8115 [2018-11-12 15:29:38,587 INFO L226 Difference]: Without dead ends: 4379 [2018-11-12 15:29:38,598 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 212 GetRequests, 154 SyntacticMatches, 12 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 761 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=430, Invalid=1826, Unknown=0, NotChecked=0, Total=2256 [2018-11-12 15:29:38,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4379 states. [2018-11-12 15:29:38,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4379 to 4369. [2018-11-12 15:29:38,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4369 states. [2018-11-12 15:29:38,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4369 states to 4369 states and 7005 transitions. [2018-11-12 15:29:38,724 INFO L78 Accepts]: Start accepts. Automaton has 4369 states and 7005 transitions. Word has length 196 [2018-11-12 15:29:38,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 15:29:38,724 INFO L480 AbstractCegarLoop]: Abstraction has 4369 states and 7005 transitions. [2018-11-12 15:29:38,724 INFO L481 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-11-12 15:29:38,724 INFO L276 IsEmpty]: Start isEmpty. Operand 4369 states and 7005 transitions. [2018-11-12 15:29:38,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2018-11-12 15:29:38,736 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 15:29:38,737 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 15:29:38,737 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 15:29:38,737 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 15:29:38,737 INFO L82 PathProgramCache]: Analyzing trace with hash 2087994975, now seen corresponding path program 1 times [2018-11-12 15:29:38,738 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 15:29:38,738 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 15:29:38,739 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 15:29:38,739 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 15:29:38,739 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 15:29:38,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 15:29:39,176 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 50 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 15:29:39,177 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 15:29:39,177 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 15:29:39,178 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 197 with the following transitions: [2018-11-12 15:29:39,178 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [25], [29], [33], [37], [41], [45], [48], [49], [53], [57], [61], [64], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [709], [711], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-12 15:29:39,185 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 15:29:39,185 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 15:29:41,752 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 15:29:41,752 INFO L272 AbstractInterpreter]: Visited 160 different actions 316 times. Merged at 5 different actions 7 times. Never widened. Performed 10446 root evaluator evaluations with a maximum evaluation depth of 6. Performed 10446 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-11-12 15:29:41,785 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 15:29:41,786 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 15:29:42,781 INFO L227 lantSequenceWeakener]: Weakened 193 states. On average, predicates are now at 70.18% of their original sizes. [2018-11-12 15:29:42,781 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 15:29:43,103 INFO L415 sIntCurrentIteration]: We unified 195 AI predicates to 195 [2018-11-12 15:29:43,103 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 15:29:43,104 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 15:29:43,104 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [6] total 22 [2018-11-12 15:29:43,104 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 15:29:43,105 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-12 15:29:43,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-12 15:29:43,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2018-11-12 15:29:43,106 INFO L87 Difference]: Start difference. First operand 4369 states and 7005 transitions. Second operand 18 states. Received shutdown request... [2018-11-12 15:30:47,312 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-12 15:30:47,312 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-12 15:30:47,318 WARN L205 ceAbstractionStarter]: Timeout [2018-11-12 15:30:47,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 03:30:47 BoogieIcfgContainer [2018-11-12 15:30:47,319 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 15:30:47,320 INFO L168 Benchmark]: Toolchain (without parser) took 239200.09 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 1.7 GB in the end (delta: -247.9 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2018-11-12 15:30:47,321 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-12 15:30:47,322 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1215.28 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2018-11-12 15:30:47,323 INFO L168 Benchmark]: Boogie Procedure Inliner took 230.32 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 783.3 MB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -907.2 MB). Peak memory consumption was 28.1 MB. Max. memory is 7.1 GB. [2018-11-12 15:30:47,324 INFO L168 Benchmark]: Boogie Preprocessor took 179.08 ms. Allocated memory is still 2.3 GB. Free memory is still 2.3 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-12 15:30:47,324 INFO L168 Benchmark]: RCFGBuilder took 5131.69 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.0 GB in the end (delta: 271.7 MB). Peak memory consumption was 271.7 MB. Max. memory is 7.1 GB. [2018-11-12 15:30:47,325 INFO L168 Benchmark]: TraceAbstraction took 232436.43 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 2.0 GB in the beginning and 1.7 GB in the end (delta: 303.1 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. [2018-11-12 15:30:47,330 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 1215.28 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 230.32 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 783.3 MB). Free memory was 1.4 GB in the beginning and 2.3 GB in the end (delta: -907.2 MB). Peak memory consumption was 28.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 179.08 ms. Allocated memory is still 2.3 GB. Free memory is still 2.3 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 5131.69 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.0 GB in the end (delta: 271.7 MB). Peak memory consumption was 271.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 232436.43 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 2.0 GB in the beginning and 1.7 GB in the end (delta: 303.1 MB). Peak memory consumption was 2.1 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1482]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1482). Cancelled while BasicCegarLoop was constructing difference of abstraction (4369states) and FLOYD_HOARE automaton (currently 14 states, 18 states before enhancement),while ReachableStatesComputation was computing reachable states (6659 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 312 locations, 1 error locations. TIMEOUT Result, 232.3s OverallTime, 7 OverallIterations, 4 TraceHistogramMax, 211.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1624 SDtfs, 8373 SDslu, 3252 SDs, 0 SdLazy, 15157 SolverSat, 1217 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 135.3s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 631 GetRequests, 506 SyntacticMatches, 15 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1047 ImplicationChecksByTransitivity, 7.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4369occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 6.6s AbstIntTime, 3 AbstIntIterations, 3 AbstIntStrong, 0.998739611444881 AbsIntWeakeningRatio, 0.33507853403141363 AbsIntAvgWeakeningVarsNumRemoved, 44.19371727748691 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 6 MinimizatonAttempts, 185 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.4s InterpolantComputationTime, 1242 NumberOfCodeBlocks, 1242 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 1235 ConstructedInterpolants, 0 QuantifiedInterpolants, 434608 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 4 PerfectInterpolantSequences, 164/180 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown