java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label39_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 14:53:30,187 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 14:53:30,189 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 14:53:30,203 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 14:53:30,203 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 14:53:30,205 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 14:53:30,206 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 14:53:30,208 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 14:53:30,210 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 14:53:30,210 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 14:53:30,211 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 14:53:30,212 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 14:53:30,213 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 14:53:30,213 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 14:53:30,215 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 14:53:30,215 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 14:53:30,216 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 14:53:30,218 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 14:53:30,220 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 14:53:30,221 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 14:53:30,223 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 14:53:30,224 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 14:53:30,226 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 14:53:30,227 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 14:53:30,227 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 14:53:30,228 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 14:53:30,229 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 14:53:30,230 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 14:53:30,230 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 14:53:30,231 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 14:53:30,232 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 14:53:30,232 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 14:53:30,233 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 14:53:30,233 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 14:53:30,234 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 14:53:30,235 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 14:53:30,235 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT.epf [2018-11-07 14:53:30,266 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 14:53:30,266 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 14:53:30,267 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 14:53:30,267 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 14:53:30,267 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 14:53:30,268 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 14:53:30,268 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 14:53:30,268 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 14:53:30,268 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 14:53:30,268 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 14:53:30,269 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 14:53:30,269 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 14:53:30,269 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 14:53:30,270 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 14:53:30,270 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 14:53:30,270 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 14:53:30,271 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 14:53:30,271 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 14:53:30,271 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 14:53:30,271 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 14:53:30,271 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 14:53:30,273 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 14:53:30,273 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 14:53:30,273 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 14:53:30,273 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 14:53:30,274 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 14:53:30,274 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 14:53:30,274 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 14:53:30,274 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 14:53:30,274 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 14:53:30,275 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 14:53:30,275 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 14:53:30,275 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 14:53:30,275 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 14:53:30,344 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 14:53:30,360 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 14:53:30,364 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 14:53:30,366 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 14:53:30,366 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 14:53:30,367 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label39_true-unreach-call.c [2018-11-07 14:53:30,422 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13be54ab0/0bf17a7b623b4910b53a4a17f5e36834/FLAGbc9a39bf4 [2018-11-07 14:53:31,177 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 14:53:31,178 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem13_label39_true-unreach-call.c [2018-11-07 14:53:31,216 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13be54ab0/0bf17a7b623b4910b53a4a17f5e36834/FLAGbc9a39bf4 [2018-11-07 14:53:31,236 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/13be54ab0/0bf17a7b623b4910b53a4a17f5e36834 [2018-11-07 14:53:31,248 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 14:53:31,251 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 14:53:31,252 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 14:53:31,252 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 14:53:31,257 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 14:53:31,258 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:53:31" (1/1) ... [2018-11-07 14:53:31,261 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29006c74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:53:31, skipping insertion in model container [2018-11-07 14:53:31,261 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:53:31" (1/1) ... [2018-11-07 14:53:31,273 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 14:53:31,454 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 14:53:32,902 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 14:53:32,907 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 14:53:33,741 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 14:53:33,780 INFO L193 MainTranslator]: Completed translation [2018-11-07 14:53:33,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:53:33 WrapperNode [2018-11-07 14:53:33,780 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 14:53:33,781 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 14:53:33,782 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 14:53:33,782 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 14:53:33,793 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:53:33" (1/1) ... [2018-11-07 14:53:34,180 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:53:33" (1/1) ... [2018-11-07 14:53:34,191 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 14:53:34,191 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 14:53:34,191 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 14:53:34,192 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 14:53:34,203 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:53:33" (1/1) ... [2018-11-07 14:53:34,203 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:53:33" (1/1) ... [2018-11-07 14:53:34,236 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:53:33" (1/1) ... [2018-11-07 14:53:34,236 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:53:33" (1/1) ... [2018-11-07 14:53:34,389 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:53:33" (1/1) ... [2018-11-07 14:53:34,423 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:53:33" (1/1) ... [2018-11-07 14:53:34,493 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:53:33" (1/1) ... [2018-11-07 14:53:34,562 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 14:53:34,563 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 14:53:34,563 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 14:53:34,563 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 14:53:34,564 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:53:33" (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 14:53:34,639 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 14:53:34,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 14:53:34,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 14:53:34,640 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 14:53:34,640 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 14:53:34,640 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 14:53:34,640 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 14:53:34,641 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 14:53:34,641 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 14:53:34,642 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 14:53:34,642 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 14:53:34,642 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 14:53:34,642 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 14:53:34,644 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 14:53:34,644 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 14:53:45,671 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 14:53:45,672 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:53:45 BoogieIcfgContainer [2018-11-07 14:53:45,672 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 14:53:45,673 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 14:53:45,673 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 14:53:45,676 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 14:53:45,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:53:31" (1/3) ... [2018-11-07 14:53:45,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5eb3620b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:53:45, skipping insertion in model container [2018-11-07 14:53:45,677 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:53:33" (2/3) ... [2018-11-07 14:53:45,678 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5eb3620b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:53:45, skipping insertion in model container [2018-11-07 14:53:45,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:53:45" (3/3) ... [2018-11-07 14:53:45,680 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem13_label39_true-unreach-call.c [2018-11-07 14:53:45,689 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 14:53:45,701 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 14:53:45,715 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 14:53:45,768 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 14:53:45,768 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 14:53:45,768 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 14:53:45,768 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 14:53:45,769 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 14:53:45,769 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 14:53:45,769 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 14:53:45,769 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 14:53:45,816 INFO L276 IsEmpty]: Start isEmpty. Operand 1120 states. [2018-11-07 14:53:45,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-11-07 14:53:45,827 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:53:45,828 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] [2018-11-07 14:53:45,830 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:53:45,835 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:53:45,835 INFO L82 PathProgramCache]: Analyzing trace with hash 1706781300, now seen corresponding path program 1 times [2018-11-07 14:53:45,838 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:53:45,885 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:53:45,885 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:53:45,886 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:53:45,886 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:53:46,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:53:46,364 WARN L179 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 14:53:46,524 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 14:53:46,527 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:53:46,530 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 14:53:46,530 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:53:46,536 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 14:53:46,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 14:53:46,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 14:53:46,555 INFO L87 Difference]: Start difference. First operand 1120 states. Second operand 3 states. [2018-11-07 14:53:54,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:53:54,227 INFO L93 Difference]: Finished difference Result 3097 states and 5707 transitions. [2018-11-07 14:53:54,227 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 14:53:54,228 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 58 [2018-11-07 14:53:54,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:53:54,266 INFO L225 Difference]: With dead ends: 3097 [2018-11-07 14:53:54,267 INFO L226 Difference]: Without dead ends: 1975 [2018-11-07 14:53:54,279 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 14:53:54,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1975 states. [2018-11-07 14:53:54,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1975 to 1974. [2018-11-07 14:53:54,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1974 states. [2018-11-07 14:53:54,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1974 states to 1974 states and 3284 transitions. [2018-11-07 14:53:54,432 INFO L78 Accepts]: Start accepts. Automaton has 1974 states and 3284 transitions. Word has length 58 [2018-11-07 14:53:54,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:53:54,433 INFO L480 AbstractCegarLoop]: Abstraction has 1974 states and 3284 transitions. [2018-11-07 14:53:54,433 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 14:53:54,434 INFO L276 IsEmpty]: Start isEmpty. Operand 1974 states and 3284 transitions. [2018-11-07 14:53:54,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-11-07 14:53:54,444 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:53:54,444 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:53:54,445 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:53:54,445 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:53:54,445 INFO L82 PathProgramCache]: Analyzing trace with hash 865550532, now seen corresponding path program 1 times [2018-11-07 14:53:54,445 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:53:54,447 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:53:54,447 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:53:54,447 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:53:54,447 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:53:54,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:53:54,798 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:53:54,799 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:53:54,799 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 14:53:54,799 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:53:54,801 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 14:53:54,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 14:53:54,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 14:53:54,802 INFO L87 Difference]: Start difference. First operand 1974 states and 3284 transitions. Second operand 5 states. [2018-11-07 14:54:08,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:54:08,230 INFO L93 Difference]: Finished difference Result 5734 states and 9688 transitions. [2018-11-07 14:54:08,231 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 14:54:08,231 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 134 [2018-11-07 14:54:08,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:54:08,254 INFO L225 Difference]: With dead ends: 5734 [2018-11-07 14:54:08,254 INFO L226 Difference]: Without dead ends: 3766 [2018-11-07 14:54:08,261 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 14:54:08,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3766 states. [2018-11-07 14:54:08,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3766 to 3681. [2018-11-07 14:54:08,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3681 states. [2018-11-07 14:54:08,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3681 states to 3681 states and 5655 transitions. [2018-11-07 14:54:08,353 INFO L78 Accepts]: Start accepts. Automaton has 3681 states and 5655 transitions. Word has length 134 [2018-11-07 14:54:08,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:54:08,353 INFO L480 AbstractCegarLoop]: Abstraction has 3681 states and 5655 transitions. [2018-11-07 14:54:08,353 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 14:54:08,354 INFO L276 IsEmpty]: Start isEmpty. Operand 3681 states and 5655 transitions. [2018-11-07 14:54:08,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2018-11-07 14:54:08,359 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:54:08,359 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:54:08,359 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:54:08,360 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:54:08,360 INFO L82 PathProgramCache]: Analyzing trace with hash 1845926312, now seen corresponding path program 1 times [2018-11-07 14:54:08,360 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:54:08,361 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:54:08,361 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:54:08,361 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:54:08,361 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:54:08,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:54:08,695 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:54:08,696 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:54:08,696 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 14:54:08,696 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:54:08,697 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 14:54:08,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 14:54:08,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 14:54:08,698 INFO L87 Difference]: Start difference. First operand 3681 states and 5655 transitions. Second operand 5 states. [2018-11-07 14:54:26,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:54:26,005 INFO L93 Difference]: Finished difference Result 13644 states and 21724 transitions. [2018-11-07 14:54:26,010 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 14:54:26,010 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 148 [2018-11-07 14:54:26,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:54:26,070 INFO L225 Difference]: With dead ends: 13644 [2018-11-07 14:54:26,071 INFO L226 Difference]: Without dead ends: 9969 [2018-11-07 14:54:26,095 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 14:54:26,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9969 states. [2018-11-07 14:54:26,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9969 to 9782. [2018-11-07 14:54:26,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9782 states. [2018-11-07 14:54:26,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9782 states to 9782 states and 14480 transitions. [2018-11-07 14:54:26,377 INFO L78 Accepts]: Start accepts. Automaton has 9782 states and 14480 transitions. Word has length 148 [2018-11-07 14:54:26,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:54:26,377 INFO L480 AbstractCegarLoop]: Abstraction has 9782 states and 14480 transitions. [2018-11-07 14:54:26,377 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 14:54:26,378 INFO L276 IsEmpty]: Start isEmpty. Operand 9782 states and 14480 transitions. [2018-11-07 14:54:26,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2018-11-07 14:54:26,383 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:54:26,384 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:54:26,384 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:54:26,384 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:54:26,384 INFO L82 PathProgramCache]: Analyzing trace with hash 150914948, now seen corresponding path program 1 times [2018-11-07 14:54:26,385 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:54:26,385 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:54:26,386 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:54:26,386 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:54:26,386 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:54:26,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:54:26,708 WARN L179 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 14:54:26,939 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:54:26,940 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 14:54:26,940 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 14:54:26,940 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:54:26,941 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 14:54:26,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 14:54:26,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 14:54:26,942 INFO L87 Difference]: Start difference. First operand 9782 states and 14480 transitions. Second operand 6 states. [2018-11-07 14:54:38,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 14:54:38,612 INFO L93 Difference]: Finished difference Result 34078 states and 53555 transitions. [2018-11-07 14:54:38,613 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 14:54:38,613 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 166 [2018-11-07 14:54:38,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 14:54:38,741 INFO L225 Difference]: With dead ends: 34078 [2018-11-07 14:54:38,741 INFO L226 Difference]: Without dead ends: 24302 [2018-11-07 14:54:38,821 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 14:54:38,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24302 states. [2018-11-07 14:54:39,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24302 to 24079. [2018-11-07 14:54:39,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24079 states. [2018-11-07 14:54:39,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24079 states to 24079 states and 33903 transitions. [2018-11-07 14:54:39,419 INFO L78 Accepts]: Start accepts. Automaton has 24079 states and 33903 transitions. Word has length 166 [2018-11-07 14:54:39,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 14:54:39,420 INFO L480 AbstractCegarLoop]: Abstraction has 24079 states and 33903 transitions. [2018-11-07 14:54:39,420 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 14:54:39,420 INFO L276 IsEmpty]: Start isEmpty. Operand 24079 states and 33903 transitions. [2018-11-07 14:54:39,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2018-11-07 14:54:39,427 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 14:54:39,427 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:54:39,428 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 14:54:39,428 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:54:39,428 INFO L82 PathProgramCache]: Analyzing trace with hash -660194316, now seen corresponding path program 1 times [2018-11-07 14:54:39,428 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 14:54:39,430 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:54:39,430 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 14:54:39,430 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 14:54:39,430 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 14:54:39,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 14:54:40,180 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 4 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 14:54:40,180 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 14:54:40,180 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 14:54:40,181 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 175 with the following transitions: [2018-11-07 14:54:40,190 INFO L202 CegarAbsIntRunner]: [0], [1], [2628], [2635], [2643], [2651], [2659], [2667], [2675], [2683], [2691], [2699], [2707], [2715], [2723], [2731], [2739], [2747], [2755], [2763], [2771], [2779], [2787], [2795], [2803], [2811], [2819], [2827], [2835], [2843], [2851], [2859], [2867], [2875], [2883], [2891], [2899], [2907], [2915], [2923], [2931], [2939], [2947], [2955], [2963], [2971], [2979], [2987], [2991], [2993], [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], [3238], [3242], [3246], [3250], [3254], [3258], [3262], [3266], [3270], [3274], [3278], [3282], [3286], [3290], [3294], [3305], [3309], [3313], [3317], [3321], [3325], [3329], [3332], [4238], [4242], [4246], [4252], [4256], [4258], [4269], [4270], [4271], [4273], [4274] [2018-11-07 14:54:40,255 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 14:54:40,256 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 14:54:41,134 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 14:54:41,136 INFO L272 AbstractInterpreter]: Visited 120 different actions 120 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-11-07 14:54:41,179 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 14:54:41,179 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 14:54:41,872 INFO L227 lantSequenceWeakener]: Weakened 158 states. On average, predicates are now at 72.03% of their original sizes. [2018-11-07 14:54:41,872 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 14:54:42,751 INFO L415 sIntCurrentIteration]: We unified 173 AI predicates to 173 [2018-11-07 14:54:42,752 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 14:54:42,753 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 14:54:42,753 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [7] total 16 [2018-11-07 14:54:42,753 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 14:54:42,754 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-07 14:54:42,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-07 14:54:42,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2018-11-07 14:54:42,754 INFO L87 Difference]: Start difference. First operand 24079 states and 33903 transitions. Second operand 11 states. [2018-11-07 14:54:51,818 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown