java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem03_label52_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 10:53:22,106 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 10:53:22,108 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 10:53:22,123 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 10:53:22,123 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 10:53:22,124 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 10:53:22,126 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 10:53:22,128 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 10:53:22,130 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 10:53:22,131 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 10:53:22,133 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 10:53:22,133 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 10:53:22,134 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 10:53:22,140 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 10:53:22,141 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 10:53:22,141 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 10:53:22,149 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 10:53:22,150 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 10:53:22,152 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 10:53:22,159 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 10:53:22,160 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 10:53:22,161 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 10:53:22,166 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 10:53:22,166 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 10:53:22,166 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 10:53:22,167 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 10:53:22,169 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 10:53:22,170 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 10:53:22,172 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 10:53:22,174 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 10:53:22,175 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 10:53:22,175 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 10:53:22,175 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 10:53:22,177 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 10:53:22,178 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 10:53:22,179 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 10:53:22,179 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-11-07 10:53:22,198 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 10:53:22,198 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 10:53:22,199 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 10:53:22,199 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 10:53:22,199 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 10:53:22,200 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 10:53:22,200 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 10:53:22,200 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 10:53:22,200 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 10:53:22,200 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 10:53:22,201 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 10:53:22,201 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 10:53:22,202 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 10:53:22,202 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 10:53:22,202 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 10:53:22,202 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 10:53:22,202 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 10:53:22,203 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 10:53:22,203 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 10:53:22,203 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 10:53:22,203 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 10:53:22,203 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 10:53:22,204 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 10:53:22,204 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 10:53:22,204 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 10:53:22,204 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 10:53:22,205 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 10:53:22,207 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 10:53:22,207 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 10:53:22,207 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 10:53:22,207 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 10:53:22,208 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 10:53:22,208 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 10:53:22,208 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 10:53:22,267 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 10:53:22,283 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 10:53:22,288 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 10:53:22,289 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 10:53:22,290 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 10:53:22,290 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label52_false-unreach-call.c [2018-11-07 10:53:22,360 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1805a2672/70b3054c2b1040908131c2c80d2980f2/FLAGd7f416665 [2018-11-07 10:53:23,063 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 10:53:23,064 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label52_false-unreach-call.c [2018-11-07 10:53:23,092 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1805a2672/70b3054c2b1040908131c2c80d2980f2/FLAGd7f416665 [2018-11-07 10:53:23,110 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1805a2672/70b3054c2b1040908131c2c80d2980f2 [2018-11-07 10:53:23,123 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 10:53:23,125 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 10:53:23,127 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 10:53:23,127 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 10:53:23,131 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 10:53:23,132 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 10:53:23" (1/1) ... [2018-11-07 10:53:23,136 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d34f998 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:53:23, skipping insertion in model container [2018-11-07 10:53:23,136 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 10:53:23" (1/1) ... [2018-11-07 10:53:23,149 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 10:53:23,244 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 10:53:23,979 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 10:53:23,984 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 10:53:24,332 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 10:53:24,358 INFO L193 MainTranslator]: Completed translation [2018-11-07 10:53:24,358 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:53:24 WrapperNode [2018-11-07 10:53:24,359 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 10:53:24,360 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 10:53:24,360 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 10:53:24,360 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 10:53:24,370 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:53:24" (1/1) ... [2018-11-07 10:53:24,558 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:53:24" (1/1) ... [2018-11-07 10:53:24,573 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 10:53:24,573 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 10:53:24,573 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 10:53:24,573 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 10:53:24,585 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:53:24" (1/1) ... [2018-11-07 10:53:24,585 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:53:24" (1/1) ... [2018-11-07 10:53:24,593 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:53:24" (1/1) ... [2018-11-07 10:53:24,594 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:53:24" (1/1) ... [2018-11-07 10:53:24,667 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:53:24" (1/1) ... [2018-11-07 10:53:24,698 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:53:24" (1/1) ... [2018-11-07 10:53:24,717 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:53:24" (1/1) ... [2018-11-07 10:53:24,735 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 10:53:24,735 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 10:53:24,736 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 10:53:24,736 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 10:53:24,737 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:53:24" (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 10:53:24,813 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 10:53:24,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 10:53:24,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 10:53:24,813 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 10:53:24,814 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 10:53:24,814 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 10:53:24,814 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 10:53:24,814 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 10:53:24,814 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 10:53:30,546 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 10:53:30,550 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 10:53:30 BoogieIcfgContainer [2018-11-07 10:53:30,550 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 10:53:30,552 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 10:53:30,552 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 10:53:30,557 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 10:53:30,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 10:53:23" (1/3) ... [2018-11-07 10:53:30,560 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2db77ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 10:53:30, skipping insertion in model container [2018-11-07 10:53:30,560 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 10:53:24" (2/3) ... [2018-11-07 10:53:30,561 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2db77ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 10:53:30, skipping insertion in model container [2018-11-07 10:53:30,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 10:53:30" (3/3) ... [2018-11-07 10:53:30,564 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label52_false-unreach-call.c [2018-11-07 10:53:30,576 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 10:53:30,591 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 10:53:30,610 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 10:53:30,667 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 10:53:30,668 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 10:53:30,668 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 10:53:30,668 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 10:53:30,668 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 10:53:30,669 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 10:53:30,669 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 10:53:30,669 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 10:53:30,713 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-11-07 10:53:30,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-11-07 10:53:30,733 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 10:53:30,734 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] [2018-11-07 10:53:30,737 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 10:53:30,743 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 10:53:30,743 INFO L82 PathProgramCache]: Analyzing trace with hash 132642340, now seen corresponding path program 1 times [2018-11-07 10:53:30,746 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 10:53:30,805 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 10:53:30,806 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 10:53:30,806 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 10:53:30,806 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 10:53:31,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 10:53:31,714 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 10:53:31,716 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 10:53:31,717 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 10:53:31,717 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 10:53:31,723 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 10:53:31,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 10:53:31,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 10:53:31,743 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 3 states. [2018-11-07 10:53:34,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 10:53:34,167 INFO L93 Difference]: Finished difference Result 848 states and 1491 transitions. [2018-11-07 10:53:34,168 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 10:53:34,169 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 153 [2018-11-07 10:53:34,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 10:53:34,192 INFO L225 Difference]: With dead ends: 848 [2018-11-07 10:53:34,193 INFO L226 Difference]: Without dead ends: 534 [2018-11-07 10:53:34,201 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 10:53:34,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2018-11-07 10:53:34,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 532. [2018-11-07 10:53:34,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 532 states. [2018-11-07 10:53:34,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 532 states to 532 states and 867 transitions. [2018-11-07 10:53:34,293 INFO L78 Accepts]: Start accepts. Automaton has 532 states and 867 transitions. Word has length 153 [2018-11-07 10:53:34,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 10:53:34,294 INFO L480 AbstractCegarLoop]: Abstraction has 532 states and 867 transitions. [2018-11-07 10:53:34,294 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 10:53:34,295 INFO L276 IsEmpty]: Start isEmpty. Operand 532 states and 867 transitions. [2018-11-07 10:53:34,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2018-11-07 10:53:34,301 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 10:53:34,301 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] [2018-11-07 10:53:34,302 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 10:53:34,302 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 10:53:34,302 INFO L82 PathProgramCache]: Analyzing trace with hash 962373920, now seen corresponding path program 1 times [2018-11-07 10:53:34,302 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 10:53:34,304 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 10:53:34,304 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 10:53:34,304 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 10:53:34,304 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 10:53:34,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 10:53:34,722 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 10:53:34,723 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 10:53:34,723 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 10:53:34,723 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 10:53:34,725 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 10:53:34,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 10:53:34,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 10:53:34,726 INFO L87 Difference]: Start difference. First operand 532 states and 867 transitions. Second operand 3 states. [2018-11-07 10:53:37,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 10:53:37,113 INFO L93 Difference]: Finished difference Result 1494 states and 2513 transitions. [2018-11-07 10:53:37,115 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 10:53:37,115 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 166 [2018-11-07 10:53:37,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 10:53:37,129 INFO L225 Difference]: With dead ends: 1494 [2018-11-07 10:53:37,130 INFO L226 Difference]: Without dead ends: 968 [2018-11-07 10:53:37,135 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 [2018-11-07 10:53:37,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2018-11-07 10:53:37,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 952. [2018-11-07 10:53:37,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 952 states. [2018-11-07 10:53:37,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 952 states to 952 states and 1529 transitions. [2018-11-07 10:53:37,198 INFO L78 Accepts]: Start accepts. Automaton has 952 states and 1529 transitions. Word has length 166 [2018-11-07 10:53:37,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 10:53:37,199 INFO L480 AbstractCegarLoop]: Abstraction has 952 states and 1529 transitions. [2018-11-07 10:53:37,199 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 10:53:37,199 INFO L276 IsEmpty]: Start isEmpty. Operand 952 states and 1529 transitions. [2018-11-07 10:53:37,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2018-11-07 10:53:37,204 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 10:53:37,205 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2018-11-07 10:53:37,205 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 10:53:37,205 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 10:53:37,206 INFO L82 PathProgramCache]: Analyzing trace with hash 766647040, now seen corresponding path program 1 times [2018-11-07 10:53:37,206 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 10:53:37,207 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 10:53:37,207 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 10:53:37,207 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 10:53:37,207 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 10:53:37,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 10:53:37,456 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 27 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 10:53:37,456 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 10:53:37,458 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 10:53:37,459 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 178 with the following transitions: [2018-11-07 10:53:37,462 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [20], [21], [25], [28], [29], [33], [37], [41], [45], [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], [685], [687], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 10:53:37,534 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 10:53:37,534 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 10:53:57,167 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 10:53:57,169 INFO L272 AbstractInterpreter]: Visited 154 different actions 154 times. Never merged. Never widened. Never found a fixpoint. Largest state had 88 variables. [2018-11-07 10:53:57,181 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 10:53:57,181 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 10:54:09,545 INFO L227 lantSequenceWeakener]: Weakened 168 states. On average, predicates are now at 69.85% of their original sizes. [2018-11-07 10:54:09,546 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 10:54:10,458 INFO L415 sIntCurrentIteration]: We unified 176 AI predicates to 176 [2018-11-07 10:54:10,458 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 10:54:10,460 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 10:54:10,461 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [6] total 20 [2018-11-07 10:54:10,461 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 10:54:10,462 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-07 10:54:10,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-07 10:54:10,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2018-11-07 10:54:10,464 INFO L87 Difference]: Start difference. First operand 952 states and 1529 transitions. Second operand 16 states. [2018-11-07 10:55:04,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 10:55:04,107 INFO L93 Difference]: Finished difference Result 2108 states and 3387 transitions. [2018-11-07 10:55:04,107 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-07 10:55:04,108 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 177 [2018-11-07 10:55:04,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 10:55:04,115 INFO L225 Difference]: With dead ends: 2108 [2018-11-07 10:55:04,115 INFO L226 Difference]: Without dead ends: 1162 [2018-11-07 10:55:04,118 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 179 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=102, Invalid=240, Unknown=0, NotChecked=0, Total=342 [2018-11-07 10:55:04,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1162 states. [2018-11-07 10:55:04,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1162 to 1160. [2018-11-07 10:55:04,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1160 states. [2018-11-07 10:55:04,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1160 states to 1160 states and 1747 transitions. [2018-11-07 10:55:04,152 INFO L78 Accepts]: Start accepts. Automaton has 1160 states and 1747 transitions. Word has length 177 [2018-11-07 10:55:04,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 10:55:04,153 INFO L480 AbstractCegarLoop]: Abstraction has 1160 states and 1747 transitions. [2018-11-07 10:55:04,153 INFO L481 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-11-07 10:55:04,153 INFO L276 IsEmpty]: Start isEmpty. Operand 1160 states and 1747 transitions. [2018-11-07 10:55:04,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2018-11-07 10:55:04,157 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 10:55:04,158 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2018-11-07 10:55:04,158 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 10:55:04,158 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 10:55:04,159 INFO L82 PathProgramCache]: Analyzing trace with hash -2135608565, now seen corresponding path program 1 times [2018-11-07 10:55:04,159 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 10:55:04,160 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 10:55:04,160 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 10:55:04,160 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 10:55:04,160 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 10:55:04,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 10:55:04,412 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 36 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 10:55:04,413 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 10:55:04,413 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 10:55:04,413 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 187 with the following transitions: [2018-11-07 10:55:04,414 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [20], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [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], [685], [687], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 10:55:04,423 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 10:55:04,423 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 10:56:36,901 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 10:56:36,901 INFO L272 AbstractInterpreter]: Visited 158 different actions 308 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-11-07 10:56:36,907 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 10:56:36,908 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 10:56:36,908 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 10:56:36,908 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 10:56:36,930 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 10:56:36,930 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 10:56:37,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 10:56:37,125 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 10:56:37,293 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 36 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 10:56:37,293 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 10:56:37,561 WARN L179 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 8 [2018-11-07 10:56:38,191 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 36 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 10:56:38,221 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 10:56:38,221 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 12 [2018-11-07 10:56:38,222 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 10:56:38,222 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 10:56:38,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 10:56:38,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2018-11-07 10:56:38,223 INFO L87 Difference]: Start difference. First operand 1160 states and 1747 transitions. Second operand 9 states. [2018-11-07 10:56:39,596 WARN L179 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2018-11-07 10:56:50,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 10:56:50,815 INFO L93 Difference]: Finished difference Result 9426 states and 19261 transitions. [2018-11-07 10:56:50,817 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-11-07 10:56:50,817 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 186 [2018-11-07 10:56:50,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 10:56:50,924 INFO L225 Difference]: With dead ends: 9426 [2018-11-07 10:56:50,924 INFO L226 Difference]: Without dead ends: 8480 [2018-11-07 10:56:50,967 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 433 GetRequests, 395 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 382 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=312, Invalid=1248, Unknown=0, NotChecked=0, Total=1560 [2018-11-07 10:56:50,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8480 states. [2018-11-07 10:56:51,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8480 to 8113. [2018-11-07 10:56:51,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8113 states. [2018-11-07 10:56:51,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8113 states to 8113 states and 12545 transitions. [2018-11-07 10:56:51,386 INFO L78 Accepts]: Start accepts. Automaton has 8113 states and 12545 transitions. Word has length 186 [2018-11-07 10:56:51,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 10:56:51,386 INFO L480 AbstractCegarLoop]: Abstraction has 8113 states and 12545 transitions. [2018-11-07 10:56:51,386 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-07 10:56:51,387 INFO L276 IsEmpty]: Start isEmpty. Operand 8113 states and 12545 transitions. [2018-11-07 10:56:51,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2018-11-07 10:56:51,420 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 10:56:51,421 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 10:56:51,421 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 10:56:51,421 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 10:56:51,422 INFO L82 PathProgramCache]: Analyzing trace with hash 1792689718, now seen corresponding path program 1 times [2018-11-07 10:56:51,422 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 10:56:51,425 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 10:56:51,426 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 10:56:51,426 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 10:56:51,426 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 10:56:51,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 10:56:51,799 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 51 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 10:56:51,799 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 10:56:51,799 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 10:56:51,799 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 201 with the following transitions: [2018-11-07 10:56:51,800 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [13], [17], [21], [24], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [123], [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], [685], [687], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 10:56:51,806 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 10:56:51,806 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown