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_label47_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 18:56:22,104 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 18:56:22,106 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 18:56:22,120 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 18:56:22,120 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 18:56:22,121 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 18:56:22,123 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 18:56:22,125 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 18:56:22,126 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 18:56:22,127 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 18:56:22,128 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 18:56:22,128 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 18:56:22,129 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 18:56:22,130 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 18:56:22,131 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 18:56:22,132 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 18:56:22,133 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 18:56:22,135 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 18:56:22,137 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 18:56:22,138 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 18:56:22,139 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 18:56:22,140 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 18:56:22,147 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 18:56:22,147 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 18:56:22,148 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 18:56:22,151 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 18:56:22,152 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 18:56:22,153 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 18:56:22,153 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 18:56:22,159 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 18:56:22,159 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 18:56:22,160 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 18:56:22,160 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 18:56:22,160 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 18:56:22,163 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 18:56:22,163 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 18:56:22,164 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 [2018-11-07 18:56:22,195 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 18:56:22,195 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 18:56:22,196 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 18:56:22,196 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 18:56:22,197 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 18:56:22,197 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 18:56:22,197 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 18:56:22,197 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 18:56:22,197 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 18:56:22,199 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 18:56:22,200 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 18:56:22,200 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 18:56:22,200 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 18:56:22,201 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 18:56:22,201 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 18:56:22,201 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 18:56:22,201 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 18:56:22,202 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 18:56:22,202 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 18:56:22,202 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 18:56:22,202 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 18:56:22,202 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 18:56:22,203 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 18:56:22,203 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 18:56:22,203 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 18:56:22,203 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 18:56:22,203 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 18:56:22,206 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 18:56:22,206 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 18:56:22,207 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 18:56:22,207 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 18:56:22,207 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 18:56:22,207 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 18:56:22,207 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 18:56:22,208 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 18:56:22,273 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 18:56:22,288 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 18:56:22,293 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 18:56:22,295 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 18:56:22,295 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 18:56:22,296 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem03_label47_true-unreach-call.c [2018-11-07 18:56:22,363 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45c6f643d/5cb0e808883d45d08bbbc22664caf666/FLAG1d898d1c6 [2018-11-07 18:56:22,998 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 18:56:23,002 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem03_label47_true-unreach-call.c [2018-11-07 18:56:23,019 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45c6f643d/5cb0e808883d45d08bbbc22664caf666/FLAG1d898d1c6 [2018-11-07 18:56:23,034 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45c6f643d/5cb0e808883d45d08bbbc22664caf666 [2018-11-07 18:56:23,045 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 18:56:23,047 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 18:56:23,048 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 18:56:23,048 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 18:56:23,052 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 18:56:23,053 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:56:23" (1/1) ... [2018-11-07 18:56:23,056 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2c2502f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:56:23, skipping insertion in model container [2018-11-07 18:56:23,056 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:56:23" (1/1) ... [2018-11-07 18:56:23,066 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 18:56:23,152 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 18:56:23,892 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 18:56:23,898 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 18:56:24,188 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 18:56:24,211 INFO L193 MainTranslator]: Completed translation [2018-11-07 18:56:24,212 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:56:24 WrapperNode [2018-11-07 18:56:24,212 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 18:56:24,213 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 18:56:24,213 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 18:56:24,213 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 18:56:24,224 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:56:24" (1/1) ... [2018-11-07 18:56:24,404 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:56:24" (1/1) ... [2018-11-07 18:56:24,423 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 18:56:24,423 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 18:56:24,423 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 18:56:24,424 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 18:56:24,440 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:56:24" (1/1) ... [2018-11-07 18:56:24,441 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:56:24" (1/1) ... [2018-11-07 18:56:24,447 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:56:24" (1/1) ... [2018-11-07 18:56:24,448 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:56:24" (1/1) ... [2018-11-07 18:56:24,499 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:56:24" (1/1) ... [2018-11-07 18:56:24,514 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:56:24" (1/1) ... [2018-11-07 18:56:24,524 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:56:24" (1/1) ... [2018-11-07 18:56:24,543 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 18:56:24,543 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 18:56:24,543 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 18:56:24,544 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 18:56:24,544 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:56:24" (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 18:56:24,615 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 18:56:24,615 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 18:56:24,616 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 18:56:24,616 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 18:56:24,617 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 18:56:24,617 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 18:56:24,617 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 18:56:24,617 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 18:56:24,617 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 18:56:29,494 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 18:56:29,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:56:29 BoogieIcfgContainer [2018-11-07 18:56:29,495 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 18:56:29,497 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 18:56:29,497 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 18:56:29,500 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 18:56:29,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 06:56:23" (1/3) ... [2018-11-07 18:56:29,502 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2759a0c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:56:29, skipping insertion in model container [2018-11-07 18:56:29,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:56:24" (2/3) ... [2018-11-07 18:56:29,502 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2759a0c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:56:29, skipping insertion in model container [2018-11-07 18:56:29,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:56:29" (3/3) ... [2018-11-07 18:56:29,506 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem03_label47_true-unreach-call.c [2018-11-07 18:56:29,517 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 18:56:29,527 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 18:56:29,545 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 18:56:29,585 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 18:56:29,585 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 18:56:29,585 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 18:56:29,586 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 18:56:29,586 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 18:56:29,586 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 18:56:29,586 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 18:56:29,587 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 18:56:29,626 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states. [2018-11-07 18:56:29,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2018-11-07 18:56:29,654 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:56:29,655 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:56:29,657 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:56:29,663 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:56:29,664 INFO L82 PathProgramCache]: Analyzing trace with hash 1857262073, now seen corresponding path program 1 times [2018-11-07 18:56:29,667 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:56:29,716 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:56:29,716 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:56:29,716 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:56:29,716 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:56:29,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:56:30,885 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 18:56:30,886 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:56:30,887 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 18:56:30,887 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:56:30,894 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 18:56:30,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 18:56:30,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 18:56:30,908 INFO L87 Difference]: Start difference. First operand 312 states. Second operand 4 states. [2018-11-07 18:56:34,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:56:34,352 INFO L93 Difference]: Finished difference Result 1082 states and 1941 transitions. [2018-11-07 18:56:34,354 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 18:56:34,355 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 204 [2018-11-07 18:56:34,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:56:34,380 INFO L225 Difference]: With dead ends: 1082 [2018-11-07 18:56:34,380 INFO L226 Difference]: Without dead ends: 764 [2018-11-07 18:56:34,388 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 18:56:34,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 764 states. [2018-11-07 18:56:34,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 764 to 522. [2018-11-07 18:56:34,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 522 states. [2018-11-07 18:56:34,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 918 transitions. [2018-11-07 18:56:34,481 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 918 transitions. Word has length 204 [2018-11-07 18:56:34,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:56:34,482 INFO L480 AbstractCegarLoop]: Abstraction has 522 states and 918 transitions. [2018-11-07 18:56:34,483 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 18:56:34,483 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 918 transitions. [2018-11-07 18:56:34,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2018-11-07 18:56:34,492 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:56:34,493 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:56:34,493 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:56:34,493 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:56:34,494 INFO L82 PathProgramCache]: Analyzing trace with hash 1605898472, now seen corresponding path program 1 times [2018-11-07 18:56:34,494 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:56:34,495 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:56:34,495 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:56:34,495 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:56:34,496 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:56:34,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:56:34,746 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 18:56:34,799 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:56:34,799 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 18:56:34,799 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 18:56:34,799 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:56:34,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 18:56:34,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 18:56:34,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 18:56:34,802 INFO L87 Difference]: Start difference. First operand 522 states and 918 transitions. Second operand 5 states. [2018-11-07 18:56:38,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:56:38,090 INFO L93 Difference]: Finished difference Result 1610 states and 2933 transitions. [2018-11-07 18:56:38,092 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 18:56:38,092 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 215 [2018-11-07 18:56:38,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:56:38,105 INFO L225 Difference]: With dead ends: 1610 [2018-11-07 18:56:38,106 INFO L226 Difference]: Without dead ends: 1094 [2018-11-07 18:56:38,110 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 18:56:38,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1094 states. [2018-11-07 18:56:38,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1094 to 1071. [2018-11-07 18:56:38,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1071 states. [2018-11-07 18:56:38,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1071 states to 1071 states and 1767 transitions. [2018-11-07 18:56:38,181 INFO L78 Accepts]: Start accepts. Automaton has 1071 states and 1767 transitions. Word has length 215 [2018-11-07 18:56:38,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:56:38,182 INFO L480 AbstractCegarLoop]: Abstraction has 1071 states and 1767 transitions. [2018-11-07 18:56:38,182 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 18:56:38,182 INFO L276 IsEmpty]: Start isEmpty. Operand 1071 states and 1767 transitions. [2018-11-07 18:56:38,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2018-11-07 18:56:38,189 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:56:38,189 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:56:38,189 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:56:38,190 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:56:38,190 INFO L82 PathProgramCache]: Analyzing trace with hash -305112671, now seen corresponding path program 1 times [2018-11-07 18:56:38,192 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:56:38,193 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:56:38,193 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:56:38,194 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:56:38,194 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:56:38,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:56:38,491 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 4 [2018-11-07 18:56:38,608 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 18:56:38,609 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:56:38,609 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:56:38,610 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 226 with the following transitions: [2018-11-07 18:56:38,613 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [8], [12], [13], [16], [17], [21], [25], [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], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1065], [1073], [1081], [1089], [1093], [1095], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 18:56:38,678 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:56:38,678 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:56:40,261 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:56:40,263 INFO L272 AbstractInterpreter]: Visited 205 different actions 205 times. Never merged. Never widened. Never found a fixpoint. Largest state had 88 variables. [2018-11-07 18:56:40,298 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:56:40,299 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:56:41,478 INFO L227 lantSequenceWeakener]: Weakened 214 states. On average, predicates are now at 74.9% of their original sizes. [2018-11-07 18:56:41,478 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:56:42,604 INFO L415 sIntCurrentIteration]: We unified 224 AI predicates to 224 [2018-11-07 18:56:42,604 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:56:42,605 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:56:42,606 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [25] imperfect sequences [6] total 29 [2018-11-07 18:56:42,606 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:56:42,607 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-11-07 18:56:42,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-11-07 18:56:42,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=467, Unknown=0, NotChecked=0, Total=600 [2018-11-07 18:56:42,608 INFO L87 Difference]: Start difference. First operand 1071 states and 1767 transitions. Second operand 25 states. [2018-11-07 18:57:24,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:57:24,983 INFO L93 Difference]: Finished difference Result 2346 states and 3856 transitions. [2018-11-07 18:57:24,984 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-07 18:57:24,984 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 225 [2018-11-07 18:57:24,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:57:24,991 INFO L225 Difference]: With dead ends: 2346 [2018-11-07 18:57:24,991 INFO L226 Difference]: Without dead ends: 1281 [2018-11-07 18:57:24,995 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 227 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=182, Invalid=574, Unknown=0, NotChecked=0, Total=756 [2018-11-07 18:57:24,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1281 states. [2018-11-07 18:57:25,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1281 to 1279. [2018-11-07 18:57:25,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1279 states. [2018-11-07 18:57:25,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1279 states to 1279 states and 1984 transitions. [2018-11-07 18:57:25,030 INFO L78 Accepts]: Start accepts. Automaton has 1279 states and 1984 transitions. Word has length 225 [2018-11-07 18:57:25,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:57:25,031 INFO L480 AbstractCegarLoop]: Abstraction has 1279 states and 1984 transitions. [2018-11-07 18:57:25,031 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-11-07 18:57:25,031 INFO L276 IsEmpty]: Start isEmpty. Operand 1279 states and 1984 transitions. [2018-11-07 18:57:25,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2018-11-07 18:57:25,038 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:57:25,038 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:57:25,039 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:57:25,039 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:57:25,039 INFO L82 PathProgramCache]: Analyzing trace with hash 1119915006, now seen corresponding path program 1 times [2018-11-07 18:57:25,039 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:57:25,040 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:57:25,041 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:57:25,041 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:57:25,041 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:57:25,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:57:25,385 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 28 proven. 17 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 18:57:25,386 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:57:25,386 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:57:25,386 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 238 with the following transitions: [2018-11-07 18:57:25,387 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [8], [12], [13], [16], [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], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1065], [1073], [1081], [1089], [1093], [1095], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 18:57:25,405 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:57:25,406 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:57:27,179 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:57:27,179 INFO L272 AbstractInterpreter]: Visited 209 different actions 412 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-11-07 18:57:27,199 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:57:27,199 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:57:28,307 INFO L227 lantSequenceWeakener]: Weakened 113 states. On average, predicates are now at 79.68% of their original sizes. [2018-11-07 18:57:28,307 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:57:30,730 INFO L415 sIntCurrentIteration]: We unified 236 AI predicates to 236 [2018-11-07 18:57:30,731 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:57:30,731 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:57:30,731 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [32] imperfect sequences [9] total 39 [2018-11-07 18:57:30,731 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:57:30,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-11-07 18:57:30,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-11-07 18:57:30,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=810, Unknown=0, NotChecked=0, Total=992 [2018-11-07 18:57:30,733 INFO L87 Difference]: Start difference. First operand 1279 states and 1984 transitions. Second operand 32 states. [2018-11-07 18:58:18,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:58:18,298 INFO L93 Difference]: Finished difference Result 2558 states and 4077 transitions. [2018-11-07 18:58:18,298 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-07 18:58:18,298 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 237 [2018-11-07 18:58:18,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:58:18,307 INFO L225 Difference]: With dead ends: 2558 [2018-11-07 18:58:18,308 INFO L226 Difference]: Without dead ends: 1493 [2018-11-07 18:58:18,311 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 249 GetRequests, 190 SyntacticMatches, 16 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 687 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=359, Invalid=1621, Unknown=0, NotChecked=0, Total=1980 [2018-11-07 18:58:18,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1493 states. [2018-11-07 18:58:18,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1493 to 1490. [2018-11-07 18:58:18,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1490 states. [2018-11-07 18:58:18,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1490 states to 1490 states and 2209 transitions. [2018-11-07 18:58:18,349 INFO L78 Accepts]: Start accepts. Automaton has 1490 states and 2209 transitions. Word has length 237 [2018-11-07 18:58:18,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:58:18,350 INFO L480 AbstractCegarLoop]: Abstraction has 1490 states and 2209 transitions. [2018-11-07 18:58:18,350 INFO L481 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-11-07 18:58:18,350 INFO L276 IsEmpty]: Start isEmpty. Operand 1490 states and 2209 transitions. [2018-11-07 18:58:18,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2018-11-07 18:58:18,356 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:58:18,357 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:58:18,357 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:58:18,357 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:58:18,358 INFO L82 PathProgramCache]: Analyzing trace with hash 743177465, now seen corresponding path program 1 times [2018-11-07 18:58:18,358 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:58:18,359 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:58:18,359 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:58:18,359 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:58:18,359 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:58:18,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:58:18,680 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:58:18,681 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:58:18,681 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:58:18,681 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 238 with the following transitions: [2018-11-07 18:58:18,682 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [8], [12], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1065], [1073], [1081], [1089], [1093], [1095], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 18:58:18,689 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:58:18,690 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:58:20,436 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 18:58:20,436 INFO L272 AbstractInterpreter]: Visited 209 different actions 410 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 18:58:20,446 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:58:20,447 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 18:58:20,447 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:58:20,447 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 18:58:20,458 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:58:20,458 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 18:58:20,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:58:20,655 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 18:58:20,897 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:58:20,898 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 18:58:21,232 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:58:21,253 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 18:58:21,253 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2018-11-07 18:58:21,254 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 18:58:21,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-07 18:58:21,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-07 18:58:21,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-11-07 18:58:21,255 INFO L87 Difference]: Start difference. First operand 1490 states and 2209 transitions. Second operand 8 states. [2018-11-07 18:58:26,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:58:26,166 INFO L93 Difference]: Finished difference Result 4434 states and 7832 transitions. [2018-11-07 18:58:26,166 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-07 18:58:26,167 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 237 [2018-11-07 18:58:26,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:58:26,193 INFO L225 Difference]: With dead ends: 4434 [2018-11-07 18:58:26,193 INFO L226 Difference]: Without dead ends: 3369 [2018-11-07 18:58:26,204 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 488 GetRequests, 474 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2018-11-07 18:58:26,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3369 states. [2018-11-07 18:58:26,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3369 to 3306. [2018-11-07 18:58:26,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3306 states. [2018-11-07 18:58:26,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3306 states to 3306 states and 5021 transitions. [2018-11-07 18:58:26,324 INFO L78 Accepts]: Start accepts. Automaton has 3306 states and 5021 transitions. Word has length 237 [2018-11-07 18:58:26,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:58:26,325 INFO L480 AbstractCegarLoop]: Abstraction has 3306 states and 5021 transitions. [2018-11-07 18:58:26,325 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-07 18:58:26,325 INFO L276 IsEmpty]: Start isEmpty. Operand 3306 states and 5021 transitions. [2018-11-07 18:58:26,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2018-11-07 18:58:26,349 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:58:26,350 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:58:26,350 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:58:26,350 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:58:26,351 INFO L82 PathProgramCache]: Analyzing trace with hash 172246987, now seen corresponding path program 1 times [2018-11-07 18:58:26,351 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:58:26,351 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:58:26,352 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:58:26,352 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:58:26,352 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:58:26,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:58:26,887 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 70 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-07 18:58:26,888 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:58:26,888 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:58:26,888 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 263 with the following transitions: [2018-11-07 18:58:26,889 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [8], [12], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [65], [68], [71], [75], [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], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1065], [1073], [1081], [1089], [1093], [1095], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 18:58:26,895 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:58:26,896 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:58:29,502 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 18:58:29,502 INFO L272 AbstractInterpreter]: Visited 210 different actions 412 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 18:58:29,508 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:58:29,508 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 18:58:29,508 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:58:29,508 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 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 18:58:29,516 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:58:29,517 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 18:58:29,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:58:29,720 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 18:58:29,853 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 64 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-11-07 18:58:29,854 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 18:58:30,085 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 64 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-11-07 18:58:30,106 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 18:58:30,106 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 11 [2018-11-07 18:58:30,106 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 18:58:30,107 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-07 18:58:30,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-07 18:58:30,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-11-07 18:58:30,107 INFO L87 Difference]: Start difference. First operand 3306 states and 5021 transitions. Second operand 9 states. [2018-11-07 18:58:33,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:58:33,119 INFO L93 Difference]: Finished difference Result 8958 states and 15167 transitions. [2018-11-07 18:58:33,120 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-07 18:58:33,120 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 262 [2018-11-07 18:58:33,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:58:33,165 INFO L225 Difference]: With dead ends: 8958 [2018-11-07 18:58:33,166 INFO L226 Difference]: Without dead ends: 6077 [2018-11-07 18:58:33,193 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 541 GetRequests, 524 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2018-11-07 18:58:33,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6077 states. [2018-11-07 18:58:33,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6077 to 5661. [2018-11-07 18:58:33,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5661 states. [2018-11-07 18:58:33,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5661 states to 5661 states and 8476 transitions. [2018-11-07 18:58:33,417 INFO L78 Accepts]: Start accepts. Automaton has 5661 states and 8476 transitions. Word has length 262 [2018-11-07 18:58:33,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:58:33,418 INFO L480 AbstractCegarLoop]: Abstraction has 5661 states and 8476 transitions. [2018-11-07 18:58:33,418 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-07 18:58:33,418 INFO L276 IsEmpty]: Start isEmpty. Operand 5661 states and 8476 transitions. [2018-11-07 18:58:33,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2018-11-07 18:58:33,446 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:58:33,446 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:58:33,447 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:58:33,447 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:58:33,447 INFO L82 PathProgramCache]: Analyzing trace with hash 601297217, now seen corresponding path program 1 times [2018-11-07 18:58:33,447 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:58:33,448 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:58:33,448 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:58:33,449 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:58:33,449 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:58:33,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:58:33,842 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 87 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-11-07 18:58:33,843 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:58:33,843 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:58:33,843 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 284 with the following transitions: [2018-11-07 18:58:33,844 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [8], [12], [13], [17], [21], [25], [29], [33], [37], [41], [45], [49], [53], [57], [61], [64], [65], [76], [80], [84], [88], [92], [96], [100], [104], [108], [112], [116], [120], [124], [128], [132], [136], [140], [144], [148], [159], [163], [167], [171], [174], [175], [179], [183], [187], [191], [202], [206], [210], [221], [225], [229], [233], [237], [241], [245], [249], [253], [257], [261], [265], [269], [273], [277], [281], [285], [289], [293], [297], [308], [312], [323], [327], [331], [335], [339], [343], [347], [351], [355], [359], [363], [367], [371], [375], [379], [383], [394], [398], [402], [406], [417], [421], [425], [429], [433], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1065], [1073], [1081], [1089], [1093], [1095], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 18:58:33,849 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:58:33,850 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:58:36,760 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 18:58:36,761 INFO L272 AbstractInterpreter]: Visited 210 different actions 624 times. Merged at 7 different actions 17 times. Never widened. Found 3 fixpoints after 2 different actions. Largest state had 88 variables. [2018-11-07 18:58:36,770 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:58:36,770 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 18:58:36,770 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:58:36,770 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 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 18:58:36,780 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:58:36,780 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 18:58:36,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:58:36,990 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 18:58:37,392 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 87 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-11-07 18:58:37,393 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 18:58:37,677 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 87 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2018-11-07 18:58:37,698 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-07 18:58:37,698 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2018-11-07 18:58:37,698 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-07 18:58:37,699 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-07 18:58:37,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-07 18:58:37,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2018-11-07 18:58:37,699 INFO L87 Difference]: Start difference. First operand 5661 states and 8476 transitions. Second operand 8 states. [2018-11-07 18:58:44,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 18:58:44,968 INFO L93 Difference]: Finished difference Result 21703 states and 37018 transitions. [2018-11-07 18:58:44,968 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-11-07 18:58:44,968 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 283 [2018-11-07 18:58:44,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 18:58:45,078 INFO L225 Difference]: With dead ends: 21703 [2018-11-07 18:58:45,079 INFO L226 Difference]: Without dead ends: 16497 [2018-11-07 18:58:45,112 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 620 GetRequests, 586 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 290 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=233, Invalid=957, Unknown=0, NotChecked=0, Total=1190 [2018-11-07 18:58:45,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16497 states. [2018-11-07 18:58:45,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16497 to 15959. [2018-11-07 18:58:45,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15959 states. [2018-11-07 18:58:45,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15959 states to 15959 states and 22857 transitions. [2018-11-07 18:58:45,752 INFO L78 Accepts]: Start accepts. Automaton has 15959 states and 22857 transitions. Word has length 283 [2018-11-07 18:58:45,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 18:58:45,752 INFO L480 AbstractCegarLoop]: Abstraction has 15959 states and 22857 transitions. [2018-11-07 18:58:45,752 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-07 18:58:45,753 INFO L276 IsEmpty]: Start isEmpty. Operand 15959 states and 22857 transitions. [2018-11-07 18:58:45,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 317 [2018-11-07 18:58:45,818 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 18:58:45,818 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:58:45,819 INFO L423 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 18:58:45,819 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:58:45,819 INFO L82 PathProgramCache]: Analyzing trace with hash -2079012350, now seen corresponding path program 1 times [2018-11-07 18:58:45,819 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 18:58:45,822 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:58:45,822 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 18:58:45,822 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 18:58:45,822 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 18:58:45,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 18:58:46,417 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 111 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 18:58:46,418 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 18:58:46,418 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 18:58:46,418 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 317 with the following transitions: [2018-11-07 18:58:46,420 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [8], [12], [13], [17], [21], [25], [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], [436], [437], [441], [445], [449], [453], [457], [461], [472], [476], [480], [484], [488], [492], [496], [500], [504], [508], [512], [516], [520], [524], [528], [532], [536], [540], [551], [555], [559], [570], [574], [585], [589], [593], [597], [601], [605], [609], [613], [624], [635], [646], [650], [654], [658], [662], [666], [673], [681], [689], [697], [705], [713], [721], [729], [737], [745], [753], [761], [769], [777], [785], [793], [801], [809], [817], [825], [833], [841], [849], [857], [865], [873], [881], [889], [897], [905], [913], [921], [929], [937], [945], [953], [961], [969], [977], [985], [993], [1001], [1009], [1017], [1025], [1033], [1041], [1049], [1057], [1065], [1073], [1081], [1089], [1093], [1095], [1157], [1161], [1165], [1171], [1175], [1177], [1182], [1183], [1184], [1186], [1187] [2018-11-07 18:58:46,427 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 18:58:46,427 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 18:58:47,917 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 18:58:47,917 INFO L272 AbstractInterpreter]: Visited 208 different actions 410 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 88 variables. [2018-11-07 18:58:47,925 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 18:58:47,925 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 18:58:49,847 INFO L227 lantSequenceWeakener]: Weakened 311 states. On average, predicates are now at 73.28% of their original sizes. [2018-11-07 18:58:49,847 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 18:58:52,909 INFO L415 sIntCurrentIteration]: We unified 315 AI predicates to 315 [2018-11-07 18:58:52,910 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 18:58:52,910 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 18:58:52,910 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [23] imperfect sequences [5] total 26 [2018-11-07 18:58:52,910 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 18:58:52,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-11-07 18:58:52,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-11-07 18:58:52,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=411, Unknown=0, NotChecked=0, Total=506 [2018-11-07 18:58:52,911 INFO L87 Difference]: Start difference. First operand 15959 states and 22857 transitions. Second operand 23 states. Received shutdown request... [2018-11-07 19:00:13,732 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-07 19:00:13,732 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 19:00:13,737 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 19:00:13,737 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 07:00:13 BoogieIcfgContainer [2018-11-07 19:00:13,737 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 19:00:13,738 INFO L168 Benchmark]: Toolchain (without parser) took 230692.46 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 2.0 GB in the end (delta: -573.8 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-11-07 19:00:13,740 INFO L168 Benchmark]: CDTParser took 0.19 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. [2018-11-07 19:00:13,741 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1164.82 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2018-11-07 19:00:13,743 INFO L168 Benchmark]: Boogie Procedure Inliner took 209.97 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 756.0 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -893.1 MB). Peak memory consumption was 39.7 MB. Max. memory is 7.1 GB. [2018-11-07 19:00:13,744 INFO L168 Benchmark]: Boogie Preprocessor took 119.67 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 27.4 MB). Peak memory consumption was 27.4 MB. Max. memory is 7.1 GB. [2018-11-07 19:00:13,744 INFO L168 Benchmark]: RCFGBuilder took 4952.41 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 257.5 MB). Peak memory consumption was 257.5 MB. Max. memory is 7.1 GB. [2018-11-07 19:00:13,745 INFO L168 Benchmark]: TraceAbstraction took 224240.81 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 2.0 GB in the end (delta: -50.1 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. [2018-11-07 19:00:13,755 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 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 1164.82 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 84.6 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 209.97 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 756.0 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -893.1 MB). Peak memory consumption was 39.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 119.67 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 27.4 MB). Peak memory consumption was 27.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 4952.41 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 257.5 MB). Peak memory consumption was 257.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 224240.81 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 2.0 GB in the end (delta: -50.1 MB). Peak memory consumption was 1.7 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 1626]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 1626). Cancelled while BasicCegarLoop was constructing difference of abstraction (15959states) and FLOYD_HOARE automaton (currently 14 states, 23 states before enhancement),while ReachableStatesComputation was computing reachable states (12578 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 312 locations, 1 error locations. TIMEOUT Result, 224.1s OverallTime, 8 OverallIterations, 4 TraceHistogramMax, 193.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1794 SDtfs, 15280 SDslu, 4195 SDs, 0 SdLazy, 23402 SolverSat, 3534 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 121.4s Time, PredicateUnifierStatistics: 6 DeclaredPredicates, 2465 GetRequests, 2276 SyntacticMatches, 19 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1354 ImplicationChecksByTransitivity, 9.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15959occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 12.3s AbstIntTime, 6 AbstIntIterations, 3 AbstIntStrong, 0.9991881556306204 AbsIntWeakeningRatio, 0.26838709677419353 AbsIntAvgWeakeningVarsNumRemoved, 56.064516129032256 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.2s AutomataMinimizationTime, 7 MinimizatonAttempts, 1287 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.2s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 4.6s InterpolantComputationTime, 2761 NumberOfCodeBlocks, 2761 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 3529 ConstructedInterpolants, 0 QuantifiedInterpolants, 1391871 SizeOfPredicates, 3 NumberOfNonLiveVariables, 3569 ConjunctsInSsa, 12 ConjunctsInUnsatCore, 14 InterpolantComputations, 2 PerfectInterpolantSequences, 825/872 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown