java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label57_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 08:55:22,575 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 08:55:22,582 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 08:55:22,604 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 08:55:22,604 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 08:55:22,606 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 08:55:22,609 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 08:55:22,611 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 08:55:22,613 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 08:55:22,614 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 08:55:22,615 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 08:55:22,615 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 08:55:22,616 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 08:55:22,617 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 08:55:22,618 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 08:55:22,619 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 08:55:22,620 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 08:55:22,624 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 08:55:22,626 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 08:55:22,631 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 08:55:22,633 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 08:55:22,637 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 08:55:22,643 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 08:55:22,643 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 08:55:22,643 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 08:55:22,644 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 08:55:22,648 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 08:55:22,649 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 08:55:22,650 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 08:55:22,654 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 08:55:22,654 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 08:55:22,655 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 08:55:22,655 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 08:55:22,655 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 08:55:22,657 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 08:55:22,658 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 08:55:22,658 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-11-07 08:55:22,681 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 08:55:22,682 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 08:55:22,682 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 08:55:22,683 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 08:55:22,683 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 08:55:22,683 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 08:55:22,683 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-07 08:55:22,683 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 08:55:22,684 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 08:55:22,684 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 08:55:22,684 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 08:55:22,684 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 08:55:22,684 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 08:55:22,685 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 08:55:22,687 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 08:55:22,687 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 08:55:22,688 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 08:55:22,688 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 08:55:22,688 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 08:55:22,688 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 08:55:22,688 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 08:55:22,689 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 08:55:22,689 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 08:55:22,689 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 08:55:22,689 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 08:55:22,689 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 08:55:22,689 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 08:55:22,692 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 08:55:22,692 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 08:55:22,692 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 08:55:22,692 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 08:55:22,693 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 08:55:22,693 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 08:55:22,693 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 08:55:22,694 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 08:55:22,694 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 08:55:22,747 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 08:55:22,760 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 08:55:22,766 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 08:55:22,768 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 08:55:22,768 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 08:55:22,769 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label57_true-unreach-call.c [2018-11-07 08:55:22,831 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0aa84201/f495b80a52374873b0774256f2a8d430/FLAG81db2ccde [2018-11-07 08:55:23,740 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 08:55:23,741 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label57_true-unreach-call.c [2018-11-07 08:55:23,788 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0aa84201/f495b80a52374873b0774256f2a8d430/FLAG81db2ccde [2018-11-07 08:55:23,806 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f0aa84201/f495b80a52374873b0774256f2a8d430 [2018-11-07 08:55:23,818 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 08:55:23,820 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 08:55:23,821 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 08:55:23,821 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 08:55:23,825 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 08:55:23,827 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:55:23" (1/1) ... [2018-11-07 08:55:23,830 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@596e7265 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:55:23, skipping insertion in model container [2018-11-07 08:55:23,830 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:55:23" (1/1) ... [2018-11-07 08:55:23,841 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 08:55:24,036 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 08:55:25,618 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 08:55:25,624 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 08:55:26,380 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 08:55:26,420 INFO L193 MainTranslator]: Completed translation [2018-11-07 08:55:26,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:55:26 WrapperNode [2018-11-07 08:55:26,421 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 08:55:26,422 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 08:55:26,422 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 08:55:26,422 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 08:55:26,433 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:55:26" (1/1) ... [2018-11-07 08:55:26,836 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:55:26" (1/1) ... [2018-11-07 08:55:26,846 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 08:55:26,847 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 08:55:26,848 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 08:55:26,848 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 08:55:26,860 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:55:26" (1/1) ... [2018-11-07 08:55:26,860 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:55:26" (1/1) ... [2018-11-07 08:55:26,899 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:55:26" (1/1) ... [2018-11-07 08:55:26,900 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:55:26" (1/1) ... [2018-11-07 08:55:27,028 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:55:26" (1/1) ... [2018-11-07 08:55:27,081 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:55:26" (1/1) ... [2018-11-07 08:55:27,114 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:55:26" (1/1) ... [2018-11-07 08:55:27,147 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 08:55:27,148 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 08:55:27,148 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 08:55:27,148 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 08:55:27,149 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:55:26" (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 08:55:27,219 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 08:55:27,220 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 08:55:27,220 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 08:55:27,220 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 08:55:27,220 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 08:55:27,220 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 08:55:27,221 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 08:55:27,221 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 08:55:27,221 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 08:55:27,222 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 08:55:27,222 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 08:55:27,222 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 08:55:27,222 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 08:55:27,223 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 08:55:27,223 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 08:55:37,333 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 08:55:37,333 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:55:37 BoogieIcfgContainer [2018-11-07 08:55:37,335 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 08:55:37,336 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 08:55:37,336 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 08:55:37,340 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 08:55:37,340 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:55:23" (1/3) ... [2018-11-07 08:55:37,342 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65dba608 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:55:37, skipping insertion in model container [2018-11-07 08:55:37,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:55:26" (2/3) ... [2018-11-07 08:55:37,342 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65dba608 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:55:37, skipping insertion in model container [2018-11-07 08:55:37,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:55:37" (3/3) ... [2018-11-07 08:55:37,345 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label57_true-unreach-call.c [2018-11-07 08:55:37,356 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 08:55:37,367 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 08:55:37,386 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 08:55:37,437 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 08:55:37,437 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 08:55:37,437 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 08:55:37,437 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 08:55:37,437 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 08:55:37,438 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 08:55:37,438 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 08:55:37,438 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 08:55:37,483 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-11-07 08:55:37,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-11-07 08:55:37,499 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:55:37,501 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] [2018-11-07 08:55:37,503 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:55:37,511 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:55:37,512 INFO L82 PathProgramCache]: Analyzing trace with hash -143907844, now seen corresponding path program 1 times [2018-11-07 08:55:37,515 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:55:37,576 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:55:37,577 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:55:37,577 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:55:37,577 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:55:37,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:55:38,082 WARN L179 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 08:55:38,206 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 08:55:38,208 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:55:38,209 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 08:55:38,209 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:55:38,216 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 08:55:38,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 08:55:38,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 08:55:38,237 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 3 states. [2018-11-07 08:55:47,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:55:47,083 INFO L93 Difference]: Finished difference Result 3087 states and 5699 transitions. [2018-11-07 08:55:47,084 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 08:55:47,085 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 68 [2018-11-07 08:55:47,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:55:47,133 INFO L225 Difference]: With dead ends: 3087 [2018-11-07 08:55:47,133 INFO L226 Difference]: Without dead ends: 1965 [2018-11-07 08:55:47,151 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 08:55:47,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1965 states. [2018-11-07 08:55:47,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1965 to 1959. [2018-11-07 08:55:47,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1959 states. [2018-11-07 08:55:47,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1959 states to 1959 states and 3512 transitions. [2018-11-07 08:55:47,338 INFO L78 Accepts]: Start accepts. Automaton has 1959 states and 3512 transitions. Word has length 68 [2018-11-07 08:55:47,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:55:47,339 INFO L480 AbstractCegarLoop]: Abstraction has 1959 states and 3512 transitions. [2018-11-07 08:55:47,339 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 08:55:47,340 INFO L276 IsEmpty]: Start isEmpty. Operand 1959 states and 3512 transitions. [2018-11-07 08:55:47,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-11-07 08:55:47,350 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:55:47,351 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, 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] [2018-11-07 08:55:47,351 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:55:47,351 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:55:47,352 INFO L82 PathProgramCache]: Analyzing trace with hash 484004430, now seen corresponding path program 1 times [2018-11-07 08:55:47,352 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:55:47,353 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:55:47,353 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:55:47,353 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:55:47,353 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:55:47,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:55:47,796 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:55:47,797 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:55:47,797 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 08:55:47,797 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:55:47,799 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 08:55:47,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 08:55:47,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 08:55:47,800 INFO L87 Difference]: Start difference. First operand 1959 states and 3512 transitions. Second operand 6 states. [2018-11-07 08:56:03,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:56:03,742 INFO L93 Difference]: Finished difference Result 7204 states and 13315 transitions. [2018-11-07 08:56:03,745 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 08:56:03,745 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 145 [2018-11-07 08:56:03,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:56:03,785 INFO L225 Difference]: With dead ends: 7204 [2018-11-07 08:56:03,785 INFO L226 Difference]: Without dead ends: 5251 [2018-11-07 08:56:03,798 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 08:56:03,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5251 states. [2018-11-07 08:56:03,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5251 to 5221. [2018-11-07 08:56:03,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5221 states. [2018-11-07 08:56:03,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5221 states to 5221 states and 8297 transitions. [2018-11-07 08:56:03,951 INFO L78 Accepts]: Start accepts. Automaton has 5221 states and 8297 transitions. Word has length 145 [2018-11-07 08:56:03,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:56:03,952 INFO L480 AbstractCegarLoop]: Abstraction has 5221 states and 8297 transitions. [2018-11-07 08:56:03,952 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 08:56:03,952 INFO L276 IsEmpty]: Start isEmpty. Operand 5221 states and 8297 transitions. [2018-11-07 08:56:03,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-11-07 08:56:03,957 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:56:03,958 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, 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] [2018-11-07 08:56:03,958 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:56:03,958 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:56:03,959 INFO L82 PathProgramCache]: Analyzing trace with hash -1149053844, now seen corresponding path program 1 times [2018-11-07 08:56:03,959 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:56:03,960 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:56:03,960 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:56:03,960 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:56:03,960 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:56:03,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:56:04,240 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 08:56:04,240 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 08:56:04,240 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 08:56:04,241 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:56:04,241 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 08:56:04,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 08:56:04,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 08:56:04,242 INFO L87 Difference]: Start difference. First operand 5221 states and 8297 transitions. Second operand 6 states. [2018-11-07 08:56:14,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 08:56:14,703 INFO L93 Difference]: Finished difference Result 13943 states and 22202 transitions. [2018-11-07 08:56:14,705 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 08:56:14,705 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 176 [2018-11-07 08:56:14,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 08:56:14,757 INFO L225 Difference]: With dead ends: 13943 [2018-11-07 08:56:14,757 INFO L226 Difference]: Without dead ends: 8728 [2018-11-07 08:56:14,781 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 [2018-11-07 08:56:14,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8728 states. [2018-11-07 08:56:15,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8728 to 8651. [2018-11-07 08:56:15,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8651 states. [2018-11-07 08:56:15,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8651 states to 8651 states and 12559 transitions. [2018-11-07 08:56:15,075 INFO L78 Accepts]: Start accepts. Automaton has 8651 states and 12559 transitions. Word has length 176 [2018-11-07 08:56:15,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 08:56:15,076 INFO L480 AbstractCegarLoop]: Abstraction has 8651 states and 12559 transitions. [2018-11-07 08:56:15,076 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 08:56:15,077 INFO L276 IsEmpty]: Start isEmpty. Operand 8651 states and 12559 transitions. [2018-11-07 08:56:15,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2018-11-07 08:56:15,085 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 08:56:15,088 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, 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] [2018-11-07 08:56:15,089 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 08:56:15,089 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:56:15,089 INFO L82 PathProgramCache]: Analyzing trace with hash -492046690, now seen corresponding path program 1 times [2018-11-07 08:56:15,090 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 08:56:15,091 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:56:15,091 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 08:56:15,091 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 08:56:15,091 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 08:56:15,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 08:56:15,594 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 122 proven. 71 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 08:56:15,594 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 08:56:15,594 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 08:56:15,595 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 222 with the following transitions: [2018-11-07 08:56:15,598 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], [3067], [3071], [3073], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3148], [3151], [3152], [3155], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-11-07 08:56:15,645 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 08:56:15,646 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 08:56:16,082 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 08:56:16,084 INFO L272 AbstractInterpreter]: Visited 82 different actions 82 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-11-07 08:56:16,109 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 08:56:16,109 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 08:56:16,668 INFO L227 lantSequenceWeakener]: Weakened 212 states. On average, predicates are now at 71.7% of their original sizes. [2018-11-07 08:56:16,668 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 08:56:16,910 INFO L415 sIntCurrentIteration]: We unified 220 AI predicates to 220 [2018-11-07 08:56:16,910 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 08:56:16,911 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 08:56:16,912 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2018-11-07 08:56:16,912 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 08:56:16,913 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 08:56:16,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 08:56:16,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 08:56:16,913 INFO L87 Difference]: Start difference. First operand 8651 states and 12559 transitions. Second operand 6 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown