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/Problem13_label09_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 18:54:30,512 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 18:54:30,515 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 18:54:30,534 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 18:54:30,534 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 18:54:30,536 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 18:54:30,537 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 18:54:30,540 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 18:54:30,543 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 18:54:30,545 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 18:54:30,546 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 18:54:30,546 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 18:54:30,548 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 18:54:30,549 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 18:54:30,550 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 18:54:30,553 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 18:54:30,554 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 18:54:30,556 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 18:54:30,558 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 18:54:30,559 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 18:54:30,560 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 18:54:30,562 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 18:54:30,564 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 18:54:30,565 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 18:54:30,565 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 18:54:30,566 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 18:54:30,567 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 18:54:30,568 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 18:54:30,568 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 18:54:30,570 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 18:54:30,570 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 18:54:30,571 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-12 18:54:30,571 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-12 18:54:30,571 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-12 18:54:30,572 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-12 18:54:30,573 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-12 18:54:30,573 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-12 18:54:30,599 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 18:54:30,600 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 18:54:30,600 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 18:54:30,601 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 18:54:30,602 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 18:54:30,602 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 18:54:30,602 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 18:54:30,602 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 18:54:30,602 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 18:54:30,603 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 18:54:30,603 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 18:54:30,603 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 18:54:30,603 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 18:54:30,604 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 18:54:30,604 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 18:54:30,605 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 18:54:30,605 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 18:54:30,605 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 18:54:30,605 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 18:54:30,605 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 18:54:30,607 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 18:54:30,608 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 18:54:30,608 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 18:54:30,608 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 18:54:30,608 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 18:54:30,608 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 18:54:30,609 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 18:54:30,609 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 18:54:30,609 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 18:54:30,609 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 18:54:30,609 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 18:54:30,610 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 18:54:30,610 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 18:54:30,610 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 18:54:30,610 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 18:54:30,657 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 18:54:30,671 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 18:54:30,675 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 18:54:30,677 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 18:54:30,677 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 18:54:30,678 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label09_true-unreach-call.c [2018-11-12 18:54:30,739 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e48c80c23/8777cf396c0342cd87bcd4be56db668f/FLAG3b6cb1607 [2018-11-12 18:54:31,572 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 18:54:31,573 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label09_true-unreach-call.c [2018-11-12 18:54:31,614 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e48c80c23/8777cf396c0342cd87bcd4be56db668f/FLAG3b6cb1607 [2018-11-12 18:54:31,635 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e48c80c23/8777cf396c0342cd87bcd4be56db668f [2018-11-12 18:54:31,648 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 18:54:31,650 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 18:54:31,651 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 18:54:31,652 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 18:54:31,658 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 18:54:31,659 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 06:54:31" (1/1) ... [2018-11-12 18:54:31,662 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24b62639 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:54:31, skipping insertion in model container [2018-11-12 18:54:31,663 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 06:54:31" (1/1) ... [2018-11-12 18:54:31,674 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 18:54:31,900 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 18:54:33,589 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 18:54:33,595 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 18:54:34,311 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 18:54:34,348 INFO L193 MainTranslator]: Completed translation [2018-11-12 18:54:34,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:54:34 WrapperNode [2018-11-12 18:54:34,349 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 18:54:34,350 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 18:54:34,350 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 18:54:34,350 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 18:54:34,639 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:54:34" (1/1) ... [2018-11-12 18:54:34,737 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:54:34" (1/1) ... [2018-11-12 18:54:34,749 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 18:54:34,749 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 18:54:34,749 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 18:54:34,750 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 18:54:34,761 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:54:34" (1/1) ... [2018-11-12 18:54:34,761 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:54:34" (1/1) ... [2018-11-12 18:54:34,791 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:54:34" (1/1) ... [2018-11-12 18:54:34,792 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:54:34" (1/1) ... [2018-11-12 18:54:34,906 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:54:34" (1/1) ... [2018-11-12 18:54:34,956 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:54:34" (1/1) ... [2018-11-12 18:54:34,988 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:54:34" (1/1) ... [2018-11-12 18:54:35,018 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 18:54:35,019 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 18:54:35,019 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 18:54:35,019 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 18:54:35,020 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:54:34" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 18:54:35,093 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-12 18:54:35,093 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 18:54:35,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 18:54:35,093 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-12 18:54:35,094 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-12 18:54:35,094 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-12 18:54:35,094 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-12 18:54:35,094 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-12 18:54:35,094 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-12 18:54:35,095 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-12 18:54:35,095 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-12 18:54:35,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 18:54:35,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 18:54:35,096 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 18:54:35,096 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 18:54:45,677 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 18:54:45,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 06:54:45 BoogieIcfgContainer [2018-11-12 18:54:45,678 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 18:54:45,679 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 18:54:45,679 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 18:54:45,682 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 18:54:45,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 06:54:31" (1/3) ... [2018-11-12 18:54:45,684 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@aa2a3e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 06:54:45, skipping insertion in model container [2018-11-12 18:54:45,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 06:54:34" (2/3) ... [2018-11-12 18:54:45,684 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@aa2a3e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 06:54:45, skipping insertion in model container [2018-11-12 18:54:45,684 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 06:54:45" (3/3) ... [2018-11-12 18:54:45,686 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label09_true-unreach-call.c [2018-11-12 18:54:45,697 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 18:54:45,707 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 18:54:45,725 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 18:54:45,774 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 18:54:45,775 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 18:54:45,775 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 18:54:45,775 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 18:54:45,775 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 18:54:45,775 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 18:54:45,775 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 18:54:45,775 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 18:54:45,820 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-11-12 18:54:45,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2018-11-12 18:54:45,831 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:54:45,832 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] [2018-11-12 18:54:45,835 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:54:45,841 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:54:45,841 INFO L82 PathProgramCache]: Analyzing trace with hash 688094243, now seen corresponding path program 1 times [2018-11-12 18:54:45,844 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:54:45,900 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:54:45,901 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:54:45,901 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:54:45,901 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:54:46,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:54:46,361 WARN L179 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 18:54:46,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 18:54:46,486 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 18:54:46,487 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-12 18:54:46,487 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:54:46,496 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-12 18:54:46,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-12 18:54:46,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 18:54:46,519 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 3 states. [2018-11-12 18:54:54,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:54:54,289 INFO L93 Difference]: Finished difference Result 3097 states and 5707 transitions. [2018-11-12 18:54:54,291 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-12 18:54:54,292 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 67 [2018-11-12 18:54:54,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:54:54,335 INFO L225 Difference]: With dead ends: 3097 [2018-11-12 18:54:54,335 INFO L226 Difference]: Without dead ends: 1975 [2018-11-12 18:54:54,346 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-12 18:54:54,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1975 states. [2018-11-12 18:54:54,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1975 to 1974. [2018-11-12 18:54:54,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1974 states. [2018-11-12 18:54:54,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1974 states to 1974 states and 3284 transitions. [2018-11-12 18:54:54,507 INFO L78 Accepts]: Start accepts. Automaton has 1974 states and 3284 transitions. Word has length 67 [2018-11-12 18:54:54,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:54:54,508 INFO L480 AbstractCegarLoop]: Abstraction has 1974 states and 3284 transitions. [2018-11-12 18:54:54,508 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-12 18:54:54,508 INFO L276 IsEmpty]: Start isEmpty. Operand 1974 states and 3284 transitions. [2018-11-12 18:54:54,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-11-12 18:54:54,520 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:54:54,520 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 18:54:54,521 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:54:54,521 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:54:54,522 INFO L82 PathProgramCache]: Analyzing trace with hash 758431250, now seen corresponding path program 1 times [2018-11-12 18:54:54,522 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:54:54,525 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:54:54,525 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:54:54,525 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:54:54,525 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:54:54,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:54:54,829 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 18:54:54,829 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 18:54:54,830 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-12 18:54:54,830 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:54:54,832 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-12 18:54:54,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-12 18:54:54,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-12 18:54:54,833 INFO L87 Difference]: Start difference. First operand 1974 states and 3284 transitions. Second operand 5 states. [2018-11-12 18:55:08,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:55:08,717 INFO L93 Difference]: Finished difference Result 5733 states and 9688 transitions. [2018-11-12 18:55:08,723 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-12 18:55:08,723 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2018-11-12 18:55:08,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:55:08,747 INFO L225 Difference]: With dead ends: 5733 [2018-11-12 18:55:08,747 INFO L226 Difference]: Without dead ends: 3765 [2018-11-12 18:55:08,754 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-12 18:55:08,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3765 states. [2018-11-12 18:55:08,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3765 to 3682. [2018-11-12 18:55:08,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3682 states. [2018-11-12 18:55:08,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3682 states to 3682 states and 5656 transitions. [2018-11-12 18:55:08,880 INFO L78 Accepts]: Start accepts. Automaton has 3682 states and 5656 transitions. Word has length 143 [2018-11-12 18:55:08,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:55:08,881 INFO L480 AbstractCegarLoop]: Abstraction has 3682 states and 5656 transitions. [2018-11-12 18:55:08,881 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-12 18:55:08,882 INFO L276 IsEmpty]: Start isEmpty. Operand 3682 states and 5656 transitions. [2018-11-12 18:55:08,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2018-11-12 18:55:08,886 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:55:08,887 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 18:55:08,887 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:55:08,887 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:55:08,888 INFO L82 PathProgramCache]: Analyzing trace with hash 2052836206, now seen corresponding path program 1 times [2018-11-12 18:55:08,888 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:55:08,889 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:55:08,889 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:55:08,889 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:55:08,889 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:55:08,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:55:09,115 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 18:55:09,115 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 18:55:09,116 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-12 18:55:09,116 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:55:09,116 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-12 18:55:09,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-12 18:55:09,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-12 18:55:09,117 INFO L87 Difference]: Start difference. First operand 3682 states and 5656 transitions. Second operand 5 states. [2018-11-12 18:55:25,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:55:25,693 INFO L93 Difference]: Finished difference Result 13649 states and 21728 transitions. [2018-11-12 18:55:25,695 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-12 18:55:25,695 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 157 [2018-11-12 18:55:25,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:55:25,756 INFO L225 Difference]: With dead ends: 13649 [2018-11-12 18:55:25,756 INFO L226 Difference]: Without dead ends: 9973 [2018-11-12 18:55:25,782 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-12 18:55:25,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9973 states. [2018-11-12 18:55:26,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9973 to 9786. [2018-11-12 18:55:26,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9786 states. [2018-11-12 18:55:26,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9786 states to 9786 states and 14482 transitions. [2018-11-12 18:55:26,092 INFO L78 Accepts]: Start accepts. Automaton has 9786 states and 14482 transitions. Word has length 157 [2018-11-12 18:55:26,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:55:26,092 INFO L480 AbstractCegarLoop]: Abstraction has 9786 states and 14482 transitions. [2018-11-12 18:55:26,092 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-12 18:55:26,093 INFO L276 IsEmpty]: Start isEmpty. Operand 9786 states and 14482 transitions. [2018-11-12 18:55:26,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2018-11-12 18:55:26,102 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:55:26,103 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 18:55:26,103 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:55:26,103 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:55:26,104 INFO L82 PathProgramCache]: Analyzing trace with hash -2003299502, now seen corresponding path program 1 times [2018-11-12 18:55:26,104 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:55:26,105 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:55:26,105 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:55:26,105 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:55:26,106 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:55:26,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:55:26,457 WARN L179 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 18:55:26,535 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 18:55:26,535 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 18:55:26,535 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 18:55:26,535 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:55:26,536 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 18:55:26,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 18:55:26,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 18:55:26,537 INFO L87 Difference]: Start difference. First operand 9786 states and 14482 transitions. Second operand 6 states. [2018-11-12 18:55:38,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:55:38,722 INFO L93 Difference]: Finished difference Result 34080 states and 53558 transitions. [2018-11-12 18:55:38,724 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 18:55:38,724 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 175 [2018-11-12 18:55:38,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:55:38,874 INFO L225 Difference]: With dead ends: 34080 [2018-11-12 18:55:38,874 INFO L226 Difference]: Without dead ends: 24300 [2018-11-12 18:55:38,953 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-12 18:55:38,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24300 states. [2018-11-12 18:55:39,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24300 to 24072. [2018-11-12 18:55:39,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24072 states. [2018-11-12 18:55:39,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24072 states to 24072 states and 33884 transitions. [2018-11-12 18:55:39,616 INFO L78 Accepts]: Start accepts. Automaton has 24072 states and 33884 transitions. Word has length 175 [2018-11-12 18:55:39,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:55:39,617 INFO L480 AbstractCegarLoop]: Abstraction has 24072 states and 33884 transitions. [2018-11-12 18:55:39,617 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 18:55:39,618 INFO L276 IsEmpty]: Start isEmpty. Operand 24072 states and 33884 transitions. [2018-11-12 18:55:39,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2018-11-12 18:55:39,647 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:55:39,648 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-12 18:55:39,648 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:55:39,648 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:55:39,649 INFO L82 PathProgramCache]: Analyzing trace with hash 1822344931, now seen corresponding path program 1 times [2018-11-12 18:55:39,649 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:55:39,650 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:55:39,650 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:55:39,650 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:55:39,650 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:55:39,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:55:39,997 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 18:55:40,406 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 120 proven. 70 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-12 18:55:40,407 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:55:40,407 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 18:55:40,409 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 282 with the following transitions: [2018-11-12 18:55:40,414 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2755], [2763], [2771], [2779], [2787], [2795], [2803], [2811], [2819], [2827], [2835], [2843], [2851], [2859], [2867], [2875], [2883], [2891], [2899], [2907], [2915], [2923], [2931], [2939], [2947], [2955], [2963], [2971], [2979], [2987], [2995], [3003], [3011], [3019], [3027], [3035], [3043], [3051], [3059], [3063], [3065], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3140], [3143], [3147], [3148], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3266], [3270], [3274], [3278], [3282], [3286], [3290], [3294], [3305], [3309], [3313], [3317], [3321], [3325], [3329], [3333], [3344], [3355], [3366], [3370], [3374], [3378], [3382], [3386], [3390], [3394], [3398], [3402], [3406], [3410], [3414], [3425], [3429], [3440], [3443], [3448], [3450], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-11-12 18:55:40,493 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 18:55:40,494 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 18:55:41,612 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 18:55:41,617 INFO L272 AbstractInterpreter]: Visited 140 different actions 140 times. Never merged. Never widened. Performed 3275 root evaluator evaluations with a maximum evaluation depth of 6. Performed 3275 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Never found a fixpoint. Largest state had 26 variables. [2018-11-12 18:55:41,669 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:55:41,669 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 18:55:42,745 INFO L227 lantSequenceWeakener]: Weakened 255 states. On average, predicates are now at 71.72% of their original sizes. [2018-11-12 18:55:42,745 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 18:55:43,648 INFO L415 sIntCurrentIteration]: We unified 280 AI predicates to 280 [2018-11-12 18:55:43,648 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 18:55:43,650 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 18:55:43,650 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [6] total 15 [2018-11-12 18:55:43,650 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:55:43,651 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-12 18:55:43,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-12 18:55:43,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-11-12 18:55:43,652 INFO L87 Difference]: Start difference. First operand 24072 states and 33884 transitions. Second operand 11 states. [2018-11-12 18:55:55,875 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 18:57:07,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 18:57:07,285 INFO L93 Difference]: Finished difference Result 48947 states and 68750 transitions. [2018-11-12 18:57:07,285 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-12 18:57:07,285 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 281 [2018-11-12 18:57:07,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 18:57:07,373 INFO L225 Difference]: With dead ends: 48947 [2018-11-12 18:57:07,373 INFO L226 Difference]: Without dead ends: 24881 [2018-11-12 18:57:07,423 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 285 GetRequests, 271 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2018-11-12 18:57:07,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24881 states. [2018-11-12 18:57:07,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24881 to 24876. [2018-11-12 18:57:07,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24876 states. [2018-11-12 18:57:07,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24876 states to 24876 states and 34699 transitions. [2018-11-12 18:57:07,927 INFO L78 Accepts]: Start accepts. Automaton has 24876 states and 34699 transitions. Word has length 281 [2018-11-12 18:57:07,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 18:57:07,927 INFO L480 AbstractCegarLoop]: Abstraction has 24876 states and 34699 transitions. [2018-11-12 18:57:07,927 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-12 18:57:07,928 INFO L276 IsEmpty]: Start isEmpty. Operand 24876 states and 34699 transitions. [2018-11-12 18:57:07,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 364 [2018-11-12 18:57:07,961 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 18:57:07,961 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 18:57:07,962 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 18:57:07,962 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:57:07,962 INFO L82 PathProgramCache]: Analyzing trace with hash 948070304, now seen corresponding path program 1 times [2018-11-12 18:57:07,963 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 18:57:07,964 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:57:07,964 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 18:57:07,964 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 18:57:07,964 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 18:57:08,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 18:57:08,349 WARN L179 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 18:57:08,871 INFO L134 CoverageAnalysis]: Checked inductivity of 461 backedges. 186 proven. 203 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-11-12 18:57:08,871 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 18:57:08,871 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 18:57:08,871 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 364 with the following transitions: [2018-11-12 18:57:08,872 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2755], [2763], [2771], [2779], [2787], [2795], [2803], [2811], [2819], [2827], [2835], [2843], [2851], [2859], [2867], [2875], [2883], [2891], [2899], [2907], [2915], [2923], [2931], [2939], [2947], [2955], [2963], [2971], [2979], [2987], [2995], [3003], [3011], [3019], [3027], [3035], [3043], [3051], [3059], [3063], [3065], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3148], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3221], [3222], [3226], [3230], [3234], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3265], [3266], [3270], [3274], [3278], [3281], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-11-12 18:57:08,879 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 18:57:08,880 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 18:57:09,691 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 18:57:09,691 INFO L272 AbstractInterpreter]: Visited 114 different actions 329 times. Merged at 5 different actions 9 times. Never widened. Performed 5956 root evaluator evaluations with a maximum evaluation depth of 6. Performed 5956 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-12 18:57:09,730 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 18:57:09,731 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 18:57:10,757 INFO L227 lantSequenceWeakener]: Weakened 59 states. On average, predicates are now at 71.82% of their original sizes. [2018-11-12 18:57:10,758 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 18:57:15,078 INFO L415 sIntCurrentIteration]: We unified 362 AI predicates to 362 [2018-11-12 18:57:15,078 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 18:57:15,078 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 18:57:15,079 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [6] total 17 [2018-11-12 18:57:15,079 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 18:57:15,079 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-12 18:57:15,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-12 18:57:15,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2018-11-12 18:57:15,080 INFO L87 Difference]: Start difference. First operand 24876 states and 34699 transitions. Second operand 13 states. [2018-11-12 18:57:22,112 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-11-12 18:57:52,962 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-12 18:57:52,963 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-12 18:57:52,969 WARN L205 ceAbstractionStarter]: Timeout [2018-11-12 18:57:52,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 06:57:52 BoogieIcfgContainer [2018-11-12 18:57:52,969 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 18:57:52,970 INFO L168 Benchmark]: Toolchain (without parser) took 201320.78 ms. Allocated memory was 1.5 GB in the beginning and 5.8 GB in the end (delta: 4.3 GB). Free memory was 1.4 GB in the beginning and 2.6 GB in the end (delta: -1.2 GB). Peak memory consumption was 3.1 GB. Max. memory is 7.1 GB. [2018-11-12 18:57:52,971 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-12 18:57:52,972 INFO L168 Benchmark]: CACSL2BoogieTranslator took 2697.67 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. [2018-11-12 18:57:52,973 INFO L168 Benchmark]: Boogie Procedure Inliner took 399.39 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 800.1 MB). Free memory was 1.1 GB in the beginning and 2.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 67.6 MB. Max. memory is 7.1 GB. [2018-11-12 18:57:52,974 INFO L168 Benchmark]: Boogie Preprocessor took 269.01 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: 36.9 MB). Peak memory consumption was 36.9 MB. Max. memory is 7.1 GB. [2018-11-12 18:57:52,974 INFO L168 Benchmark]: RCFGBuilder took 10659.37 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 163.6 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 23.9 MB). Peak memory consumption was 665.3 MB. Max. memory is 7.1 GB. [2018-11-12 18:57:52,975 INFO L168 Benchmark]: TraceAbstraction took 187290.37 ms. Allocated memory was 2.5 GB in the beginning and 5.8 GB in the end (delta: 3.3 GB). Free memory was 2.2 GB in the beginning and 2.6 GB in the end (delta: -409.3 MB). Peak memory consumption was 2.9 GB. Max. memory is 7.1 GB. [2018-11-12 18:57:52,981 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 2697.67 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.1 GB in the end (delta: 253.7 MB). Peak memory consumption was 253.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 399.39 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 800.1 MB). Free memory was 1.1 GB in the beginning and 2.2 GB in the end (delta: -1.1 GB). Peak memory consumption was 67.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 269.01 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: 36.9 MB). Peak memory consumption was 36.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 10659.37 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 163.6 MB). Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 23.9 MB). Peak memory consumption was 665.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 187290.37 ms. Allocated memory was 2.5 GB in the beginning and 5.8 GB in the end (delta: 3.3 GB). Free memory was 2.2 GB in the beginning and 2.6 GB in the end (delta: -409.3 MB). Peak memory consumption was 2.9 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 192]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 192). Cancelled while BasicCegarLoop was constructing difference of abstraction (24876states) and FLOYD_HOARE automaton (currently 16 states, 13 states before enhancement),while ReachableStatesComputation was computing reachable states (16445 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 1120 locations, 1 error locations. TIMEOUT Result, 187.2s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 172.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3778 SDtfs, 17439 SDslu, 3262 SDs, 0 SdLazy, 33981 SolverSat, 5874 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 88.6s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 686 GetRequests, 528 SyntacticMatches, 107 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 6.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24876occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 2.1s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9978987149019656 AbsIntWeakeningRatio, 0.09968847352024922 AbsIntAvgWeakeningVarsNumRemoved, 6.543613707165109 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.7s AutomataMinimizationTime, 5 MinimizatonAttempts, 504 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 1186 NumberOfCodeBlocks, 1186 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 1180 ConstructedInterpolants, 0 QuantifiedInterpolants, 714252 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 563/836 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown