java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label58_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-1dbac8b [2018-10-27 00:32:19,259 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 00:32:19,264 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 00:32:19,277 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 00:32:19,277 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 00:32:19,278 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 00:32:19,279 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 00:32:19,281 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 00:32:19,283 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 00:32:19,284 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 00:32:19,284 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 00:32:19,285 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 00:32:19,286 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 00:32:19,287 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 00:32:19,288 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 00:32:19,288 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 00:32:19,289 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 00:32:19,294 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 00:32:19,296 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 00:32:19,303 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 00:32:19,307 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 00:32:19,308 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 00:32:19,314 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 00:32:19,314 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 00:32:19,314 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 00:32:19,315 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 00:32:19,316 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 00:32:19,317 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 00:32:19,318 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 00:32:19,319 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 00:32:19,319 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 00:32:19,320 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 00:32:19,320 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 00:32:19,320 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 00:32:19,321 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 00:32:19,322 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 00:32:19,322 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-27 00:32:19,342 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 00:32:19,342 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 00:32:19,343 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-27 00:32:19,343 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-27 00:32:19,343 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-27 00:32:19,343 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-27 00:32:19,344 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-27 00:32:19,344 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-27 00:32:19,344 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-27 00:32:19,344 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-27 00:32:19,344 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-27 00:32:19,344 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-27 00:32:19,345 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 00:32:19,345 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 00:32:19,345 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 00:32:19,346 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-27 00:32:19,346 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-27 00:32:19,346 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-27 00:32:19,346 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 00:32:19,346 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-27 00:32:19,347 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 00:32:19,347 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 00:32:19,347 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-27 00:32:19,347 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-27 00:32:19,347 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-27 00:32:19,348 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 00:32:19,348 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-27 00:32:19,348 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-27 00:32:19,348 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-27 00:32:19,348 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-27 00:32:19,348 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-27 00:32:19,349 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-27 00:32:19,349 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-27 00:32:19,349 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-27 00:32:19,393 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 00:32:19,406 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 00:32:19,412 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 00:32:19,414 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 00:32:19,414 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 00:32:19,415 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label58_false-unreach-call.c [2018-10-27 00:32:19,478 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/128226b54/736aba606f324d9d9618c4433f26a3e8/FLAGac611100b [2018-10-27 00:32:20,307 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 00:32:20,308 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label58_false-unreach-call.c [2018-10-27 00:32:20,363 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/128226b54/736aba606f324d9d9618c4433f26a3e8/FLAGac611100b [2018-10-27 00:32:20,379 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/128226b54/736aba606f324d9d9618c4433f26a3e8 [2018-10-27 00:32:20,390 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 00:32:20,392 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-27 00:32:20,393 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 00:32:20,393 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 00:32:20,398 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 00:32:20,399 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:32:20" (1/1) ... [2018-10-27 00:32:20,402 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a6628d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:32:20, skipping insertion in model container [2018-10-27 00:32:20,402 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:32:20" (1/1) ... [2018-10-27 00:32:20,414 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 00:32:20,646 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 00:32:22,721 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 00:32:22,730 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 00:32:23,991 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 00:32:24,042 INFO L193 MainTranslator]: Completed translation [2018-10-27 00:32:24,043 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:32:24 WrapperNode [2018-10-27 00:32:24,043 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 00:32:24,044 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 00:32:24,044 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 00:32:24,044 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 00:32:24,054 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:32:24" (1/1) ... [2018-10-27 00:32:24,140 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:32:24" (1/1) ... [2018-10-27 00:32:24,761 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 00:32:24,762 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 00:32:24,762 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 00:32:24,762 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 00:32:24,773 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:32:24" (1/1) ... [2018-10-27 00:32:24,773 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:32:24" (1/1) ... [2018-10-27 00:32:24,841 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:32:24" (1/1) ... [2018-10-27 00:32:24,841 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:32:24" (1/1) ... [2018-10-27 00:32:25,021 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:32:24" (1/1) ... [2018-10-27 00:32:25,080 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:32:24" (1/1) ... [2018-10-27 00:32:25,170 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:32:24" (1/1) ... [2018-10-27 00:32:25,288 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 00:32:25,288 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 00:32:25,288 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 00:32:25,289 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 00:32:25,289 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:32:24" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-27 00:32:25,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-27 00:32:25,358 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-27 00:32:25,358 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2018-10-27 00:32:25,359 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2018-10-27 00:32:25,359 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2018-10-27 00:32:25,359 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2018-10-27 00:32:25,359 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-27 00:32:25,360 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-27 00:32:25,360 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-27 00:32:25,360 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-27 00:32:25,360 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-27 00:32:25,360 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-27 00:32:25,360 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-27 00:32:25,361 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-27 00:32:25,361 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 00:32:25,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 00:32:25,361 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-27 00:32:25,361 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-27 00:32:43,117 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 00:32:43,118 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:32:43 BoogieIcfgContainer [2018-10-27 00:32:43,118 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 00:32:43,119 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-27 00:32:43,120 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-27 00:32:43,123 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-27 00:32:43,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 12:32:20" (1/3) ... [2018-10-27 00:32:43,125 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fe23df4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:32:43, skipping insertion in model container [2018-10-27 00:32:43,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:32:24" (2/3) ... [2018-10-27 00:32:43,125 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6fe23df4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:32:43, skipping insertion in model container [2018-10-27 00:32:43,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:32:43" (3/3) ... [2018-10-27 00:32:43,127 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label58_false-unreach-call.c [2018-10-27 00:32:43,138 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-27 00:32:43,149 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-27 00:32:43,167 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-27 00:32:43,222 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-27 00:32:43,222 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-27 00:32:43,222 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-27 00:32:43,222 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 00:32:43,223 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 00:32:43,223 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-27 00:32:43,223 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 00:32:43,223 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-27 00:32:43,279 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states. [2018-10-27 00:32:43,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2018-10-27 00:32:43,292 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:32:43,293 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] [2018-10-27 00:32:43,297 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:32:43,302 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:32:43,302 INFO L82 PathProgramCache]: Analyzing trace with hash -1840290404, now seen corresponding path program 1 times [2018-10-27 00:32:43,304 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:32:43,358 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:32:43,359 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:32:43,359 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:32:43,359 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:32:43,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:32:43,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:32:43,715 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 00:32:43,716 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-27 00:32:43,716 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:32:43,722 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-27 00:32:43,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-27 00:32:43,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-27 00:32:43,742 INFO L87 Difference]: Start difference. First operand 1778 states. Second operand 4 states. [2018-10-27 00:33:10,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:33:10,358 INFO L93 Difference]: Finished difference Result 6513 states and 12383 transitions. [2018-10-27 00:33:10,359 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-27 00:33:10,360 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2018-10-27 00:33:10,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:33:10,414 INFO L225 Difference]: With dead ends: 6513 [2018-10-27 00:33:10,415 INFO L226 Difference]: Without dead ends: 4729 [2018-10-27 00:33:10,430 INFO L605 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 [2018-10-27 00:33:10,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4729 states. [2018-10-27 00:33:10,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4729 to 4693. [2018-10-27 00:33:10,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4693 states. [2018-10-27 00:33:10,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4693 states to 4693 states and 7735 transitions. [2018-10-27 00:33:10,803 INFO L78 Accepts]: Start accepts. Automaton has 4693 states and 7735 transitions. Word has length 20 [2018-10-27 00:33:10,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:33:10,804 INFO L481 AbstractCegarLoop]: Abstraction has 4693 states and 7735 transitions. [2018-10-27 00:33:10,804 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-27 00:33:10,804 INFO L276 IsEmpty]: Start isEmpty. Operand 4693 states and 7735 transitions. [2018-10-27 00:33:10,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2018-10-27 00:33:10,809 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:33:10,810 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-27 00:33:10,810 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:33:10,810 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:33:10,811 INFO L82 PathProgramCache]: Analyzing trace with hash 1215912625, now seen corresponding path program 1 times [2018-10-27 00:33:10,811 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:33:10,812 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:33:10,812 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:33:10,812 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:33:10,813 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:33:10,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:33:11,194 WARN L179 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 00:33:11,287 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:33:11,287 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 00:33:11,288 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 00:33:11,288 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:33:11,290 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 00:33:11,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 00:33:11,291 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 00:33:11,292 INFO L87 Difference]: Start difference. First operand 4693 states and 7735 transitions. Second operand 6 states. [2018-10-27 00:33:39,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:33:39,191 INFO L93 Difference]: Finished difference Result 17886 states and 30173 transitions. [2018-10-27 00:33:39,192 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 00:33:39,193 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 92 [2018-10-27 00:33:39,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:33:39,275 INFO L225 Difference]: With dead ends: 17886 [2018-10-27 00:33:39,275 INFO L226 Difference]: Without dead ends: 13199 [2018-10-27 00:33:39,297 INFO L605 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 [2018-10-27 00:33:39,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13199 states. [2018-10-27 00:33:39,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13199 to 13130. [2018-10-27 00:33:39,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13130 states. [2018-10-27 00:33:39,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13130 states to 13130 states and 19368 transitions. [2018-10-27 00:33:39,802 INFO L78 Accepts]: Start accepts. Automaton has 13130 states and 19368 transitions. Word has length 92 [2018-10-27 00:33:39,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:33:39,803 INFO L481 AbstractCegarLoop]: Abstraction has 13130 states and 19368 transitions. [2018-10-27 00:33:39,803 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 00:33:39,803 INFO L276 IsEmpty]: Start isEmpty. Operand 13130 states and 19368 transitions. [2018-10-27 00:33:39,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2018-10-27 00:33:39,807 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:33:39,807 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-10-27 00:33:39,808 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:33:39,808 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:33:39,808 INFO L82 PathProgramCache]: Analyzing trace with hash 489135727, now seen corresponding path program 1 times [2018-10-27 00:33:39,808 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:33:39,809 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:33:39,809 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:33:39,810 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:33:39,810 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:33:39,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:33:40,237 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:33:40,237 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 00:33:40,237 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 00:33:40,238 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:33:40,238 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 00:33:40,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 00:33:40,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-10-27 00:33:40,239 INFO L87 Difference]: Start difference. First operand 13130 states and 19368 transitions. Second operand 6 states. [2018-10-27 00:34:03,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:34:03,648 INFO L93 Difference]: Finished difference Result 39920 states and 60257 transitions. [2018-10-27 00:34:03,650 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-10-27 00:34:03,650 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 102 [2018-10-27 00:34:03,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:34:03,766 INFO L225 Difference]: With dead ends: 39920 [2018-10-27 00:34:03,767 INFO L226 Difference]: Without dead ends: 26796 [2018-10-27 00:34:03,803 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2018-10-27 00:34:03,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26796 states. [2018-10-27 00:34:04,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26796 to 26557. [2018-10-27 00:34:04,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26557 states. [2018-10-27 00:34:04,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26557 states to 26557 states and 38668 transitions. [2018-10-27 00:34:04,343 INFO L78 Accepts]: Start accepts. Automaton has 26557 states and 38668 transitions. Word has length 102 [2018-10-27 00:34:04,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:34:04,344 INFO L481 AbstractCegarLoop]: Abstraction has 26557 states and 38668 transitions. [2018-10-27 00:34:04,344 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 00:34:04,344 INFO L276 IsEmpty]: Start isEmpty. Operand 26557 states and 38668 transitions. [2018-10-27 00:34:04,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2018-10-27 00:34:04,348 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:34:04,349 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-27 00:34:04,349 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:34:04,349 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:34:04,349 INFO L82 PathProgramCache]: Analyzing trace with hash -1440473089, now seen corresponding path program 1 times [2018-10-27 00:34:04,349 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:34:04,350 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:34:04,351 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:34:04,351 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:34:04,351 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:34:04,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:34:04,681 WARN L179 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 00:34:04,808 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 00:34:04,808 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 00:34:04,808 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-27 00:34:04,808 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:34:04,809 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-27 00:34:04,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-27 00:34:04,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-27 00:34:04,810 INFO L87 Difference]: Start difference. First operand 26557 states and 38668 transitions. Second operand 6 states. [2018-10-27 00:34:26,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 00:34:26,502 INFO L93 Difference]: Finished difference Result 70585 states and 106806 transitions. [2018-10-27 00:34:26,506 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-27 00:34:26,506 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 135 [2018-10-27 00:34:26,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-27 00:34:26,665 INFO L225 Difference]: With dead ends: 70585 [2018-10-27 00:34:26,665 INFO L226 Difference]: Without dead ends: 44034 [2018-10-27 00:34:26,738 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-27 00:34:26,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44034 states. [2018-10-27 00:34:27,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44034 to 43878. [2018-10-27 00:34:27,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43878 states. [2018-10-27 00:34:27,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43878 states to 43878 states and 61142 transitions. [2018-10-27 00:34:27,523 INFO L78 Accepts]: Start accepts. Automaton has 43878 states and 61142 transitions. Word has length 135 [2018-10-27 00:34:27,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-27 00:34:27,524 INFO L481 AbstractCegarLoop]: Abstraction has 43878 states and 61142 transitions. [2018-10-27 00:34:27,524 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-27 00:34:27,524 INFO L276 IsEmpty]: Start isEmpty. Operand 43878 states and 61142 transitions. [2018-10-27 00:34:27,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2018-10-27 00:34:27,532 INFO L367 BasicCegarLoop]: Found error trace [2018-10-27 00:34:27,532 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 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] [2018-10-27 00:34:27,532 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-27 00:34:27,533 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:34:27,533 INFO L82 PathProgramCache]: Analyzing trace with hash -1419206454, now seen corresponding path program 1 times [2018-10-27 00:34:27,533 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-27 00:34:27,534 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:34:27,534 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 00:34:27,534 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 00:34:27,534 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-27 00:34:27,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 00:34:27,827 WARN L179 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-27 00:34:28,117 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 26 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-27 00:34:28,117 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-27 00:34:28,117 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-27 00:34:28,118 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 172 with the following transitions: [2018-10-27 00:34:28,120 INFO L202 CegarAbsIntRunner]: [0], [1], [5227], [5234], [5242], [5250], [5258], [5266], [5274], [5282], [5286], [5288], [5291], [5299], [5307], [5315], [5323], [5331], [5339], [5347], [5355], [5363], [5371], [5379], [5387], [5395], [5403], [5411], [5419], [5427], [5435], [5443], [5451], [5459], [5467], [5475], [5483], [5491], [5499], [5507], [5515], [5523], [5531], [5539], [5547], [5555], [5563], [5571], [5579], [5587], [5595], [5603], [5611], [5619], [5627], [5635], [5643], [5651], [5659], [5667], [5675], [5683], [5691], [5699], [5707], [5715], [5719], [5722], [5726], [5727], [5731], [5742], [5746], [5750], [5754], [5758], [5762], [5766], [5769], [6802], [6806], [6810], [6816], [6820], [6822], [6837], [6838], [6839], [6841], [6842] [2018-10-27 00:34:28,185 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-27 00:34:28,185 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-27 00:34:30,087 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-27 00:34:30,089 INFO L272 AbstractInterpreter]: Visited 84 different actions 84 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-27 00:34:30,124 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 00:34:30,124 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-27 00:34:31,856 INFO L227 lantSequenceWeakener]: Weakened 161 states. On average, predicates are now at 75.1% of their original sizes. [2018-10-27 00:34:31,856 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-10-27 00:34:32,176 INFO L415 sIntCurrentIteration]: We unified 170 AI predicates to 170 [2018-10-27 00:34:32,176 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-27 00:34:32,177 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-27 00:34:32,178 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-10-27 00:34:32,178 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-27 00:34:32,178 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-27 00:34:32,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-27 00:34:32,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-27 00:34:32,179 INFO L87 Difference]: Start difference. First operand 43878 states and 61142 transitions. Second operand 7 states. [2018-10-27 00:34:36,929 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