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/Problem18_label28_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 09:38:00,780 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 09:38:00,782 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 09:38:00,796 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 09:38:00,797 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 09:38:00,798 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 09:38:00,800 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 09:38:00,802 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 09:38:00,804 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 09:38:00,806 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 09:38:00,809 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 09:38:00,809 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 09:38:00,810 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 09:38:00,811 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 09:38:00,814 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 09:38:00,823 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 09:38:00,824 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 09:38:00,828 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 09:38:00,829 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 09:38:00,833 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 09:38:00,834 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 09:38:00,837 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 09:38:00,840 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 09:38:00,840 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 09:38:00,840 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 09:38:00,843 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 09:38:00,844 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 09:38:00,845 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 09:38:00,846 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 09:38:00,848 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 09:38:00,848 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 09:38:00,849 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 09:38:00,849 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 09:38:00,849 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 09:38:00,850 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 09:38:00,852 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 09:38:00,853 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 09:38:00,873 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 09:38:00,873 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 09:38:00,874 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 09:38:00,874 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 09:38:00,874 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 09:38:00,875 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 09:38:00,875 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-07 09:38:00,875 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 09:38:00,875 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 09:38:00,875 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 09:38:00,878 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 09:38:00,879 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 09:38:00,879 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 09:38:00,879 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 09:38:00,880 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 09:38:00,880 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 09:38:00,880 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 09:38:00,880 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 09:38:00,882 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 09:38:00,882 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 09:38:00,883 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 09:38:00,883 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 09:38:00,883 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 09:38:00,883 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 09:38:00,883 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 09:38:00,884 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 09:38:00,884 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 09:38:00,884 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 09:38:00,884 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 09:38:00,885 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 09:38:00,885 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 09:38:00,885 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 09:38:00,885 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 09:38:00,885 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 09:38:00,886 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 09:38:00,886 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 09:38:00,946 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 09:38:00,961 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 09:38:00,966 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 09:38:00,967 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 09:38:00,968 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 09:38:00,968 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem18_label28_true-unreach-call.c [2018-11-07 09:38:01,030 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8400abace/0f1e83b16fd249a5b005b2e7eef1635f/FLAGdd0e7c543 [2018-11-07 09:38:01,745 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 09:38:01,746 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem18_label28_true-unreach-call.c [2018-11-07 09:38:01,772 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8400abace/0f1e83b16fd249a5b005b2e7eef1635f/FLAGdd0e7c543 [2018-11-07 09:38:01,789 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8400abace/0f1e83b16fd249a5b005b2e7eef1635f [2018-11-07 09:38:01,802 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 09:38:01,804 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 09:38:01,806 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 09:38:01,806 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 09:38:01,813 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 09:38:01,814 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:38:01" (1/1) ... [2018-11-07 09:38:01,818 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@193d11b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:38:01, skipping insertion in model container [2018-11-07 09:38:01,819 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:38:01" (1/1) ... [2018-11-07 09:38:01,831 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 09:38:01,970 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 09:38:03,143 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 09:38:03,148 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 09:38:03,631 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 09:38:03,663 INFO L193 MainTranslator]: Completed translation [2018-11-07 09:38:03,663 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:38:03 WrapperNode [2018-11-07 09:38:03,664 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 09:38:03,666 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 09:38:03,666 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 09:38:03,666 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 09:38:03,677 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:38:03" (1/1) ... [2018-11-07 09:38:04,007 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:38:03" (1/1) ... [2018-11-07 09:38:04,017 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 09:38:04,018 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 09:38:04,018 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 09:38:04,018 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 09:38:04,029 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:38:03" (1/1) ... [2018-11-07 09:38:04,029 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:38:03" (1/1) ... [2018-11-07 09:38:04,042 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:38:03" (1/1) ... [2018-11-07 09:38:04,043 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:38:03" (1/1) ... [2018-11-07 09:38:04,145 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:38:03" (1/1) ... [2018-11-07 09:38:04,188 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:38:03" (1/1) ... [2018-11-07 09:38:04,215 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:38:03" (1/1) ... [2018-11-07 09:38:04,245 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 09:38:04,246 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 09:38:04,246 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 09:38:04,246 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 09:38:04,247 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:38:03" (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 09:38:04,313 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 09:38:04,313 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 09:38:04,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 09:38:04,314 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 09:38:04,314 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 09:38:04,314 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 09:38:04,314 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 09:38:04,314 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 09:38:04,315 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 09:38:04,315 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 09:38:04,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 09:38:04,315 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 09:38:04,315 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 09:38:12,503 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 09:38:12,503 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:38:12 BoogieIcfgContainer [2018-11-07 09:38:12,504 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 09:38:12,505 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 09:38:12,505 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 09:38:12,508 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 09:38:12,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 09:38:01" (1/3) ... [2018-11-07 09:38:12,509 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@121d1234 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:38:12, skipping insertion in model container [2018-11-07 09:38:12,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:38:03" (2/3) ... [2018-11-07 09:38:12,510 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@121d1234 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:38:12, skipping insertion in model container [2018-11-07 09:38:12,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:38:12" (3/3) ... [2018-11-07 09:38:12,512 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem18_label28_true-unreach-call.c [2018-11-07 09:38:12,522 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 09:38:12,532 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 09:38:12,550 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 09:38:12,595 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 09:38:12,595 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 09:38:12,595 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 09:38:12,595 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 09:38:12,595 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 09:38:12,596 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 09:38:12,596 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 09:38:12,596 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 09:38:12,638 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states. [2018-11-07 09:38:12,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-11-07 09:38:12,653 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:38:12,654 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:38:12,657 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:38:12,663 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:38:12,663 INFO L82 PathProgramCache]: Analyzing trace with hash -2076114681, now seen corresponding path program 1 times [2018-11-07 09:38:12,666 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:38:12,720 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:38:12,720 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:38:12,720 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:38:12,720 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:38:12,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:38:13,198 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-11-07 09:38:13,289 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 09:38:13,292 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:38:13,293 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 09:38:13,293 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:38:13,299 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 09:38:13,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 09:38:13,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 09:38:13,319 INFO L87 Difference]: Start difference. First operand 775 states. Second operand 4 states. [2018-11-07 09:38:23,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:38:23,613 INFO L93 Difference]: Finished difference Result 2974 states and 5747 transitions. [2018-11-07 09:38:23,613 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 09:38:23,614 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 71 [2018-11-07 09:38:23,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:38:23,651 INFO L225 Difference]: With dead ends: 2974 [2018-11-07 09:38:23,651 INFO L226 Difference]: Without dead ends: 2193 [2018-11-07 09:38:23,663 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 09:38:23,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2193 states. [2018-11-07 09:38:23,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2193 to 1474. [2018-11-07 09:38:23,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1474 states. [2018-11-07 09:38:23,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 2384 transitions. [2018-11-07 09:38:23,845 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 2384 transitions. Word has length 71 [2018-11-07 09:38:23,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:38:23,846 INFO L480 AbstractCegarLoop]: Abstraction has 1474 states and 2384 transitions. [2018-11-07 09:38:23,846 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 09:38:23,846 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 2384 transitions. [2018-11-07 09:38:23,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2018-11-07 09:38:23,859 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:38:23,860 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:38:23,860 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:38:23,860 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:38:23,861 INFO L82 PathProgramCache]: Analyzing trace with hash 865904024, now seen corresponding path program 1 times [2018-11-07 09:38:23,861 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:38:23,862 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:38:23,863 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:38:23,863 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:38:23,863 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:38:23,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:38:24,156 WARN L179 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 09:38:24,252 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:38:24,253 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:38:24,253 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 09:38:24,253 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:38:24,256 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 09:38:24,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 09:38:24,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 09:38:24,257 INFO L87 Difference]: Start difference. First operand 1474 states and 2384 transitions. Second operand 5 states. [2018-11-07 09:38:33,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:38:33,614 INFO L93 Difference]: Finished difference Result 4422 states and 7235 transitions. [2018-11-07 09:38:33,622 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 09:38:33,622 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 141 [2018-11-07 09:38:33,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:38:33,648 INFO L225 Difference]: With dead ends: 4422 [2018-11-07 09:38:33,648 INFO L226 Difference]: Without dead ends: 2954 [2018-11-07 09:38:33,654 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 09:38:33,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2954 states. [2018-11-07 09:38:33,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2954 to 2930. [2018-11-07 09:38:33,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2930 states. [2018-11-07 09:38:33,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2930 states to 2930 states and 4516 transitions. [2018-11-07 09:38:33,762 INFO L78 Accepts]: Start accepts. Automaton has 2930 states and 4516 transitions. Word has length 141 [2018-11-07 09:38:33,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:38:33,763 INFO L480 AbstractCegarLoop]: Abstraction has 2930 states and 4516 transitions. [2018-11-07 09:38:33,763 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 09:38:33,763 INFO L276 IsEmpty]: Start isEmpty. Operand 2930 states and 4516 transitions. [2018-11-07 09:38:33,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2018-11-07 09:38:33,775 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:38:33,776 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 09:38:33,776 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:38:33,776 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:38:33,777 INFO L82 PathProgramCache]: Analyzing trace with hash -1444523296, now seen corresponding path program 1 times [2018-11-07 09:38:33,777 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:38:33,783 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:38:33,783 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:38:33,783 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:38:33,783 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:38:33,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:38:34,037 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:38:34,038 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:38:34,038 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 09:38:34,038 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:38:34,039 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 09:38:34,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 09:38:34,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 09:38:34,040 INFO L87 Difference]: Start difference. First operand 2930 states and 4516 transitions. Second operand 6 states. [2018-11-07 09:38:39,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:38:39,321 INFO L93 Difference]: Finished difference Result 7357 states and 11327 transitions. [2018-11-07 09:38:39,322 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 09:38:39,322 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 145 [2018-11-07 09:38:39,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:38:39,354 INFO L225 Difference]: With dead ends: 7357 [2018-11-07 09:38:39,354 INFO L226 Difference]: Without dead ends: 4433 [2018-11-07 09:38:39,364 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 09:38:39,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4433 states. [2018-11-07 09:38:39,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4433 to 4400. [2018-11-07 09:38:39,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4400 states. [2018-11-07 09:38:39,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4400 states to 4400 states and 5842 transitions. [2018-11-07 09:38:39,517 INFO L78 Accepts]: Start accepts. Automaton has 4400 states and 5842 transitions. Word has length 145 [2018-11-07 09:38:39,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:38:39,518 INFO L480 AbstractCegarLoop]: Abstraction has 4400 states and 5842 transitions. [2018-11-07 09:38:39,518 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 09:38:39,518 INFO L276 IsEmpty]: Start isEmpty. Operand 4400 states and 5842 transitions. [2018-11-07 09:38:39,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2018-11-07 09:38:39,522 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:38:39,523 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, 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] [2018-11-07 09:38:39,523 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:38:39,523 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:38:39,527 INFO L82 PathProgramCache]: Analyzing trace with hash -797874491, now seen corresponding path program 1 times [2018-11-07 09:38:39,527 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:38:39,528 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:38:39,528 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:38:39,529 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:38:39,529 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:38:39,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:38:39,815 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:38:39,815 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:38:39,816 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 09:38:39,816 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:38:39,816 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 09:38:39,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 09:38:39,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 09:38:39,817 INFO L87 Difference]: Start difference. First operand 4400 states and 5842 transitions. Second operand 4 states. [2018-11-07 09:38:46,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:38:46,224 INFO L93 Difference]: Finished difference Result 17356 states and 23632 transitions. [2018-11-07 09:38:46,228 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 09:38:46,228 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 178 [2018-11-07 09:38:46,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:38:46,285 INFO L225 Difference]: With dead ends: 17356 [2018-11-07 09:38:46,285 INFO L226 Difference]: Without dead ends: 12962 [2018-11-07 09:38:46,314 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 09:38:46,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12962 states. [2018-11-07 09:38:46,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12962 to 12962. [2018-11-07 09:38:46,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12962 states. [2018-11-07 09:38:46,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12962 states to 12962 states and 16372 transitions. [2018-11-07 09:38:46,606 INFO L78 Accepts]: Start accepts. Automaton has 12962 states and 16372 transitions. Word has length 178 [2018-11-07 09:38:46,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:38:46,606 INFO L480 AbstractCegarLoop]: Abstraction has 12962 states and 16372 transitions. [2018-11-07 09:38:46,606 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 09:38:46,607 INFO L276 IsEmpty]: Start isEmpty. Operand 12962 states and 16372 transitions. [2018-11-07 09:38:46,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2018-11-07 09:38:46,614 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:38:46,615 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, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:38:46,615 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:38:46,615 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:38:46,615 INFO L82 PathProgramCache]: Analyzing trace with hash 1768524495, now seen corresponding path program 1 times [2018-11-07 09:38:46,616 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:38:46,616 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:38:46,617 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:38:46,617 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:38:46,617 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:38:46,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:38:47,161 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 221 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:38:47,162 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:38:47,162 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:38:47,163 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 290 with the following transitions: [2018-11-07 09:38:47,165 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1919], [1927], [1935], [1943], [1951], [1959], [1967], [1975], [1983], [1991], [1999], [2007], [2015], [2023], [2031], [2039], [2047], [2055], [2063], [2071], [2079], [2087], [2091], [2093], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2216], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2328], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-11-07 09:38:47,219 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:38:47,219 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:38:47,826 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 09:38:47,828 INFO L272 AbstractInterpreter]: Visited 128 different actions 128 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-11-07 09:38:47,859 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:38:47,860 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 09:38:48,456 INFO L227 lantSequenceWeakener]: Weakened 280 states. On average, predicates are now at 78.16% of their original sizes. [2018-11-07 09:38:48,456 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 09:38:48,724 INFO L415 sIntCurrentIteration]: We unified 288 AI predicates to 288 [2018-11-07 09:38:48,724 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 09:38:48,725 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 09:38:48,725 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2018-11-07 09:38:48,726 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:38:48,726 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 09:38:48,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 09:38:48,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 09:38:48,869 INFO L87 Difference]: Start difference. First operand 12962 states and 16372 transitions. Second operand 6 states. [2018-11-07 09:40:44,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:40:44,441 INFO L93 Difference]: Finished difference Result 26623 states and 33475 transitions. [2018-11-07 09:40:44,441 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 09:40:44,441 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 289 [2018-11-07 09:40:44,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:40:44,483 INFO L225 Difference]: With dead ends: 26623 [2018-11-07 09:40:44,484 INFO L226 Difference]: Without dead ends: 13667 [2018-11-07 09:40:44,522 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 289 GetRequests, 284 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-07 09:40:44,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13667 states. [2018-11-07 09:40:44,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13667 to 13665. [2018-11-07 09:40:44,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13665 states. [2018-11-07 09:40:44,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13665 states to 13665 states and 17087 transitions. [2018-11-07 09:40:44,835 INFO L78 Accepts]: Start accepts. Automaton has 13665 states and 17087 transitions. Word has length 289 [2018-11-07 09:40:44,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:40:44,835 INFO L480 AbstractCegarLoop]: Abstraction has 13665 states and 17087 transitions. [2018-11-07 09:40:44,835 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 09:40:44,836 INFO L276 IsEmpty]: Start isEmpty. Operand 13665 states and 17087 transitions. [2018-11-07 09:40:44,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2018-11-07 09:40:44,854 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:40:44,854 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, 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, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:40:44,855 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:40:44,855 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:40:44,855 INFO L82 PathProgramCache]: Analyzing trace with hash 1575146157, now seen corresponding path program 1 times [2018-11-07 09:40:44,856 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:40:44,856 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:40:44,862 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:40:44,862 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:40:44,862 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:40:44,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:40:45,475 WARN L179 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-07 09:40:45,934 INFO L134 CoverageAnalysis]: Checked inductivity of 505 backedges. 251 proven. 249 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 09:40:45,934 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:40:45,934 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:40:45,935 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 477 with the following transitions: [2018-11-07 09:40:45,935 INFO L202 CegarAbsIntRunner]: [0], [1], [1624], [1631], [1639], [1647], [1655], [1663], [1671], [1679], [1687], [1695], [1703], [1711], [1719], [1727], [1735], [1743], [1751], [1759], [1767], [1775], [1783], [1791], [1799], [1807], [1815], [1823], [1831], [1839], [1847], [1855], [1863], [1871], [1879], [1887], [1895], [1903], [1911], [1919], [1927], [1935], [1943], [1951], [1959], [1967], [1975], [1983], [1991], [1999], [2007], [2015], [2023], [2031], [2039], [2047], [2055], [2063], [2071], [2079], [2087], [2091], [2093], [2096], [2104], [2112], [2117], [2121], [2125], [2129], [2133], [2137], [2141], [2145], [2149], [2153], [2157], [2161], [2165], [2169], [2173], [2177], [2181], [2185], [2189], [2193], [2197], [2201], [2205], [2209], [2213], [2216], [2217], [2221], [2225], [2229], [2233], [2237], [2241], [2245], [2249], [2253], [2257], [2261], [2265], [2269], [2273], [2277], [2281], [2285], [2289], [2293], [2297], [2301], [2305], [2309], [2313], [2317], [2321], [2325], [2328], [2329], [2333], [2337], [2341], [2345], [2349], [2353], [2357], [2361], [2365], [2369], [2373], [2377], [2381], [2385], [2389], [2393], [2397], [2401], [2405], [2409], [2413], [2417], [2421], [2425], [2429], [2433], [2437], [2441], [2445], [2449], [2453], [2457], [2461], [2465], [2469], [2473], [2477], [2481], [2485], [2489], [2493], [2497], [2501], [2505], [2509], [2513], [2517], [2521], [2525], [2529], [2533], [2537], [2541], [2545], [2549], [2553], [2557], [2561], [2565], [2569], [2573], [2577], [2581], [2584], [2996], [3000], [3004], [3010], [3014], [3016], [3025], [3026], [3027], [3029], [3030] [2018-11-07 09:40:45,944 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:40:45,944 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:40:46,156 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 09:40:46,157 INFO L272 AbstractInterpreter]: Visited 196 different actions 385 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-11-07 09:40:46,197 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:40:46,197 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 09:40:46,696 INFO L227 lantSequenceWeakener]: Weakened 473 states. On average, predicates are now at 77.85% of their original sizes. [2018-11-07 09:40:46,696 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 09:40:46,953 INFO L415 sIntCurrentIteration]: We unified 475 AI predicates to 475 [2018-11-07 09:40:46,954 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 09:40:46,954 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 09:40:46,954 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [11] total 19 [2018-11-07 09:40:46,955 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:40:46,955 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-07 09:40:46,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-07 09:40:46,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2018-11-07 09:40:46,956 INFO L87 Difference]: Start difference. First operand 13665 states and 17087 transitions. Second operand 10 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown