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_label28_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 06:16:47,980 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 06:16:47,982 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 06:16:47,997 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 06:16:47,997 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 06:16:47,999 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 06:16:48,002 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 06:16:48,004 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 06:16:48,006 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 06:16:48,008 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 06:16:48,009 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 06:16:48,010 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 06:16:48,010 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 06:16:48,012 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 06:16:48,013 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 06:16:48,013 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 06:16:48,014 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 06:16:48,016 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 06:16:48,018 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 06:16:48,019 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 06:16:48,020 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 06:16:48,022 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 06:16:48,024 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 06:16:48,025 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 06:16:48,025 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 06:16:48,026 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 06:16:48,027 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 06:16:48,028 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 06:16:48,028 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 06:16:48,029 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 06:16:48,030 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 06:16:48,030 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 06:16:48,031 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 06:16:48,031 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 06:16:48,032 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 06:16:48,032 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 06:16:48,033 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 06:16:48,053 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 06:16:48,054 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 06:16:48,055 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 06:16:48,055 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 06:16:48,055 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 06:16:48,055 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 06:16:48,055 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-07 06:16:48,055 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 06:16:48,056 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 06:16:48,056 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 06:16:48,056 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 06:16:48,056 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 06:16:48,056 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 06:16:48,057 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 06:16:48,057 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 06:16:48,057 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 06:16:48,058 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 06:16:48,058 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 06:16:48,058 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 06:16:48,058 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 06:16:48,058 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 06:16:48,059 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 06:16:48,059 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 06:16:48,059 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 06:16:48,059 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 06:16:48,059 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 06:16:48,060 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 06:16:48,060 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 06:16:48,060 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 06:16:48,060 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 06:16:48,060 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 06:16:48,060 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 06:16:48,061 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 06:16:48,061 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 06:16:48,061 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 06:16:48,061 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 06:16:48,109 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 06:16:48,123 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 06:16:48,127 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 06:16:48,128 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 06:16:48,129 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 06:16:48,131 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label28_false-unreach-call.c [2018-11-07 06:16:48,206 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/306186622/fef058cedb444e74a7034da032064f91/FLAG5bcffef24 [2018-11-07 06:16:49,009 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 06:16:49,010 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label28_false-unreach-call.c [2018-11-07 06:16:49,059 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/306186622/fef058cedb444e74a7034da032064f91/FLAG5bcffef24 [2018-11-07 06:16:49,080 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/306186622/fef058cedb444e74a7034da032064f91 [2018-11-07 06:16:49,092 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 06:16:49,095 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 06:16:49,096 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 06:16:49,097 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 06:16:49,101 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 06:16:49,102 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:16:49" (1/1) ... [2018-11-07 06:16:49,107 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@673adebe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:16:49, skipping insertion in model container [2018-11-07 06:16:49,108 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 06:16:49" (1/1) ... [2018-11-07 06:16:49,119 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 06:16:49,322 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 06:16:51,332 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 06:16:51,340 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 06:16:52,106 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 06:16:52,139 INFO L193 MainTranslator]: Completed translation [2018-11-07 06:16:52,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:16:52 WrapperNode [2018-11-07 06:16:52,140 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 06:16:52,141 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 06:16:52,141 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 06:16:52,141 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 06:16:52,150 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:16:52" (1/1) ... [2018-11-07 06:16:52,524 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:16:52" (1/1) ... [2018-11-07 06:16:52,535 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 06:16:52,536 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 06:16:52,536 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 06:16:52,536 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 06:16:52,547 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:16:52" (1/1) ... [2018-11-07 06:16:52,548 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:16:52" (1/1) ... [2018-11-07 06:16:52,582 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:16:52" (1/1) ... [2018-11-07 06:16:52,582 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:16:52" (1/1) ... [2018-11-07 06:16:52,715 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:16:52" (1/1) ... [2018-11-07 06:16:52,756 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:16:52" (1/1) ... [2018-11-07 06:16:52,792 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:16:52" (1/1) ... [2018-11-07 06:16:52,824 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 06:16:52,825 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 06:16:52,825 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 06:16:52,825 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 06:16:52,826 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:16:52" (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 06:16:52,898 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 06:16:52,899 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 06:16:52,899 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 06:16:52,899 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 06:16:52,900 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 06:16:52,900 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 06:16:52,900 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 06:16:52,900 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 06:16:52,901 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 06:16:52,901 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 06:16:52,901 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 06:16:52,901 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 06:16:52,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 06:16:52,902 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 06:16:52,902 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 06:17:03,957 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 06:17:03,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:17:03 BoogieIcfgContainer [2018-11-07 06:17:03,958 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 06:17:03,959 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 06:17:03,959 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 06:17:03,963 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 06:17:03,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 06:16:49" (1/3) ... [2018-11-07 06:17:03,964 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c5799dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:17:03, skipping insertion in model container [2018-11-07 06:17:03,964 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 06:16:52" (2/3) ... [2018-11-07 06:17:03,964 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c5799dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 06:17:03, skipping insertion in model container [2018-11-07 06:17:03,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 06:17:03" (3/3) ... [2018-11-07 06:17:03,967 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label28_false-unreach-call.c [2018-11-07 06:17:03,977 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 06:17:03,988 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 06:17:04,006 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 06:17:04,056 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 06:17:04,057 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 06:17:04,057 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 06:17:04,057 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 06:17:04,057 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 06:17:04,057 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 06:17:04,057 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 06:17:04,057 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 06:17:04,100 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-11-07 06:17:04,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2018-11-07 06:17:04,108 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:17:04,109 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] [2018-11-07 06:17:04,112 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:17:04,118 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:17:04,118 INFO L82 PathProgramCache]: Analyzing trace with hash 1619247140, now seen corresponding path program 1 times [2018-11-07 06:17:04,121 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:17:04,172 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:17:04,172 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:17:04,173 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:17:04,173 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:17:04,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:17:04,537 WARN L179 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 06:17:04,645 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 06:17:04,648 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 06:17:04,648 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 06:17:04,649 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 06:17:04,655 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 06:17:04,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 06:17:04,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 06:17:04,676 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 3 states. [2018-11-07 06:17:13,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:17:13,725 INFO L93 Difference]: Finished difference Result 3104 states and 5729 transitions. [2018-11-07 06:17:13,726 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 06:17:13,727 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2018-11-07 06:17:13,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:17:13,766 INFO L225 Difference]: With dead ends: 3104 [2018-11-07 06:17:13,766 INFO L226 Difference]: Without dead ends: 1982 [2018-11-07 06:17:13,779 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 06:17:13,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1982 states. [2018-11-07 06:17:13,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1982 to 1965. [2018-11-07 06:17:13,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1965 states. [2018-11-07 06:17:13,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1965 states to 1965 states and 3515 transitions. [2018-11-07 06:17:13,987 INFO L78 Accepts]: Start accepts. Automaton has 1965 states and 3515 transitions. Word has length 22 [2018-11-07 06:17:13,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:17:13,987 INFO L480 AbstractCegarLoop]: Abstraction has 1965 states and 3515 transitions. [2018-11-07 06:17:13,987 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 06:17:13,988 INFO L276 IsEmpty]: Start isEmpty. Operand 1965 states and 3515 transitions. [2018-11-07 06:17:13,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-11-07 06:17:13,994 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:17:13,995 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 06:17:13,995 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:17:13,995 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:17:13,996 INFO L82 PathProgramCache]: Analyzing trace with hash 163198400, now seen corresponding path program 1 times [2018-11-07 06:17:13,996 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:17:13,998 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:17:13,998 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:17:13,998 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:17:13,998 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:17:14,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:17:14,327 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 06:17:14,327 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 06:17:14,328 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 06:17:14,328 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 06:17:14,330 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 06:17:14,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 06:17:14,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 06:17:14,330 INFO L87 Difference]: Start difference. First operand 1965 states and 3515 transitions. Second operand 5 states. [2018-11-07 06:17:25,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:17:25,040 INFO L93 Difference]: Finished difference Result 5645 states and 10294 transitions. [2018-11-07 06:17:25,043 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 06:17:25,043 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 92 [2018-11-07 06:17:25,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:17:25,074 INFO L225 Difference]: With dead ends: 5645 [2018-11-07 06:17:25,074 INFO L226 Difference]: Without dead ends: 3686 [2018-11-07 06:17:25,082 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 06:17:25,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3686 states. [2018-11-07 06:17:25,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3686 to 3654. [2018-11-07 06:17:25,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3654 states. [2018-11-07 06:17:25,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3654 states to 3654 states and 5960 transitions. [2018-11-07 06:17:25,207 INFO L78 Accepts]: Start accepts. Automaton has 3654 states and 5960 transitions. Word has length 92 [2018-11-07 06:17:25,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:17:25,208 INFO L480 AbstractCegarLoop]: Abstraction has 3654 states and 5960 transitions. [2018-11-07 06:17:25,208 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 06:17:25,208 INFO L276 IsEmpty]: Start isEmpty. Operand 3654 states and 5960 transitions. [2018-11-07 06:17:25,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2018-11-07 06:17:25,212 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:17:25,213 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 06:17:25,213 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:17:25,213 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:17:25,213 INFO L82 PathProgramCache]: Analyzing trace with hash -997681060, now seen corresponding path program 1 times [2018-11-07 06:17:25,213 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:17:25,214 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:17:25,215 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:17:25,215 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:17:25,215 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:17:25,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:17:25,424 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 06:17:25,424 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 06:17:25,424 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 06:17:25,424 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 06:17:25,425 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 06:17:25,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 06:17:25,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 06:17:25,426 INFO L87 Difference]: Start difference. First operand 3654 states and 5960 transitions. Second operand 5 states. [2018-11-07 06:17:35,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 06:17:35,050 INFO L93 Difference]: Finished difference Result 10919 states and 18331 transitions. [2018-11-07 06:17:35,055 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 06:17:35,055 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 94 [2018-11-07 06:17:35,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 06:17:35,099 INFO L225 Difference]: With dead ends: 10919 [2018-11-07 06:17:35,100 INFO L226 Difference]: Without dead ends: 7271 [2018-11-07 06:17:35,115 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 06:17:35,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7271 states. [2018-11-07 06:17:35,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7271 to 7118. [2018-11-07 06:17:35,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7118 states. [2018-11-07 06:17:35,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7118 states to 7118 states and 10839 transitions. [2018-11-07 06:17:35,312 INFO L78 Accepts]: Start accepts. Automaton has 7118 states and 10839 transitions. Word has length 94 [2018-11-07 06:17:35,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 06:17:35,313 INFO L480 AbstractCegarLoop]: Abstraction has 7118 states and 10839 transitions. [2018-11-07 06:17:35,313 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 06:17:35,313 INFO L276 IsEmpty]: Start isEmpty. Operand 7118 states and 10839 transitions. [2018-11-07 06:17:35,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2018-11-07 06:17:35,318 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 06:17:35,318 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 06:17:35,318 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 06:17:35,323 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:17:35,323 INFO L82 PathProgramCache]: Analyzing trace with hash 1870478224, now seen corresponding path program 1 times [2018-11-07 06:17:35,323 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 06:17:35,324 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:17:35,324 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 06:17:35,325 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 06:17:35,326 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 06:17:35,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 06:17:35,738 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-07 06:17:35,738 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 06:17:35,738 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 06:17:35,739 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 117 with the following transitions: [2018-11-07 06:17:35,741 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2703], [2705], [2708], [2716], [2724], [2732], [2740], [2748], [2756], [2764], [2772], [2780], [2788], [2796], [2804], [2812], [2820], [2828], [2836], [2844], [2852], [2860], [2868], [2876], [2884], [2892], [2900], [2908], [2916], [2924], [2932], [2940], [2948], [2956], [2964], [2972], [2980], [2988], [2996], [3004], [3012], [3020], [3028], [3036], [3044], [3052], [3060], [3068], [3076], [3084], [3092], [3100], [3108], [3116], [3121], [3125], [3129], [3133], [3137], [3148], [3152], [3156], [3160], [3164], [3168], [3179], [3183], [3187], [3191], [3195], [3199], [3203], [3207], [3218], [3222], [3226], [3230], [3234], [3237], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-11-07 06:17:35,788 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 06:17:35,789 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 06:17:36,345 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 06:17:36,347 INFO L272 AbstractInterpreter]: Visited 98 different actions 98 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-11-07 06:17:36,391 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 06:17:36,391 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 06:17:36,750 INFO L227 lantSequenceWeakener]: Weakened 110 states. On average, predicates are now at 70.68% of their original sizes. [2018-11-07 06:17:36,751 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 06:17:36,995 INFO L415 sIntCurrentIteration]: We unified 115 AI predicates to 115 [2018-11-07 06:17:36,995 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 06:17:36,997 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 06:17:36,997 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2018-11-07 06:17:36,997 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 06:17:36,998 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 06:17:36,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 06:17:36,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 06:17:36,998 INFO L87 Difference]: Start difference. First operand 7118 states and 10839 transitions. Second operand 6 states. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown