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_label39_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-0fd1304 [2018-10-24 02:25:34,320 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 02:25:34,322 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 02:25:34,338 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 02:25:34,339 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 02:25:34,340 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 02:25:34,341 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 02:25:34,345 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 02:25:34,348 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 02:25:34,356 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 02:25:34,358 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 02:25:34,359 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 02:25:34,359 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 02:25:34,361 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 02:25:34,364 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 02:25:34,365 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 02:25:34,365 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 02:25:34,369 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 02:25:34,372 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 02:25:34,375 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 02:25:34,376 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 02:25:34,379 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 02:25:34,381 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 02:25:34,382 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 02:25:34,383 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 02:25:34,383 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 02:25:34,384 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 02:25:34,385 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 02:25:34,386 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 02:25:34,387 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 02:25:34,387 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 02:25:34,388 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 02:25:34,388 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 02:25:34,388 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 02:25:34,389 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 02:25:34,390 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 02:25:34,390 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 [2018-10-24 02:25:34,415 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 02:25:34,417 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 02:25:34,418 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 02:25:34,418 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 02:25:34,418 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 02:25:34,418 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 02:25:34,419 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 02:25:34,419 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 02:25:34,419 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 02:25:34,419 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 02:25:34,419 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 02:25:34,419 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 02:25:34,421 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 02:25:34,421 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 02:25:34,421 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 02:25:34,421 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 02:25:34,422 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 02:25:34,422 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 02:25:34,422 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 02:25:34,422 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 02:25:34,422 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 02:25:34,422 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 02:25:34,424 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 02:25:34,424 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 02:25:34,425 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 02:25:34,425 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 02:25:34,425 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 02:25:34,425 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 02:25:34,425 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 02:25:34,426 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 02:25:34,426 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 02:25:34,426 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 02:25:34,426 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 02:25:34,426 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 02:25:34,476 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 02:25:34,492 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 02:25:34,496 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 02:25:34,497 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 02:25:34,498 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 02:25:34,498 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label39_true-unreach-call.c [2018-10-24 02:25:34,553 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/1549b67a1/4f1819c2e6f24bfd9349a87af1c537ed/FLAGb1baa9a45 [2018-10-24 02:25:35,439 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 02:25:35,440 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label39_true-unreach-call.c [2018-10-24 02:25:35,492 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/1549b67a1/4f1819c2e6f24bfd9349a87af1c537ed/FLAGb1baa9a45 [2018-10-24 02:25:35,508 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/1549b67a1/4f1819c2e6f24bfd9349a87af1c537ed [2018-10-24 02:25:35,521 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 02:25:35,523 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 02:25:35,524 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 02:25:35,525 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 02:25:35,529 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 02:25:35,530 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:25:35" (1/1) ... [2018-10-24 02:25:35,533 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6de4ffa3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:25:35, skipping insertion in model container [2018-10-24 02:25:35,534 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 02:25:35" (1/1) ... [2018-10-24 02:25:35,545 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 02:25:35,804 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 02:25:37,751 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 02:25:37,756 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 02:25:39,171 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 02:25:39,227 INFO L193 MainTranslator]: Completed translation [2018-10-24 02:25:39,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:25:39 WrapperNode [2018-10-24 02:25:39,228 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 02:25:39,229 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 02:25:39,229 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 02:25:39,229 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 02:25:39,241 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:25:39" (1/1) ... [2018-10-24 02:25:39,341 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:25:39" (1/1) ... [2018-10-24 02:25:39,980 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 02:25:39,981 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 02:25:39,981 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 02:25:39,981 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 02:25:39,993 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:25:39" (1/1) ... [2018-10-24 02:25:39,994 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:25:39" (1/1) ... [2018-10-24 02:25:40,092 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:25:39" (1/1) ... [2018-10-24 02:25:40,092 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:25:39" (1/1) ... [2018-10-24 02:25:40,349 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:25:39" (1/1) ... [2018-10-24 02:25:40,408 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:25:39" (1/1) ... [2018-10-24 02:25:40,538 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:25:39" (1/1) ... [2018-10-24 02:25:40,670 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 02:25:40,671 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 02:25:40,671 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 02:25:40,671 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 02:25:40,672 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:25:39" (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 [2018-10-24 02:25:40,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 02:25:40,744 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 02:25:40,744 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2018-10-24 02:25:40,744 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2018-10-24 02:25:40,745 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2018-10-24 02:25:40,745 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2018-10-24 02:25:40,745 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-10-24 02:25:40,745 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-10-24 02:25:40,745 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-10-24 02:25:40,745 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-10-24 02:25:40,746 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 02:25:40,746 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 02:25:40,747 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 02:25:40,747 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 02:25:40,747 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 02:25:40,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 02:25:40,747 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 02:25:40,748 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 02:25:59,301 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 02:25:59,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:25:59 BoogieIcfgContainer [2018-10-24 02:25:59,302 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 02:25:59,303 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 02:25:59,303 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 02:25:59,306 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 02:25:59,306 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 02:25:35" (1/3) ... [2018-10-24 02:25:59,307 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b27b732 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:25:59, skipping insertion in model container [2018-10-24 02:25:59,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 02:25:39" (2/3) ... [2018-10-24 02:25:59,308 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b27b732 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 02:25:59, skipping insertion in model container [2018-10-24 02:25:59,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 02:25:59" (3/3) ... [2018-10-24 02:25:59,310 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label39_true-unreach-call.c [2018-10-24 02:25:59,320 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 02:25:59,332 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 02:25:59,349 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 02:25:59,402 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 02:25:59,402 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 02:25:59,402 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 02:25:59,403 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 02:25:59,403 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 02:25:59,403 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 02:25:59,403 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 02:25:59,403 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 02:25:59,458 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states. [2018-10-24 02:25:59,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2018-10-24 02:25:59,466 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 02:25:59,468 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] [2018-10-24 02:25:59,470 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 02:25:59,476 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:25:59,477 INFO L82 PathProgramCache]: Analyzing trace with hash -1284410716, now seen corresponding path program 1 times [2018-10-24 02:25:59,479 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 02:25:59,534 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:25:59,535 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 02:25:59,535 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:25:59,535 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 02:25:59,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 02:25:59,911 WARN L179 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 02:26:00,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 02:26:00,023 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 02:26:00,023 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-10-24 02:26:00,023 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 02:26:00,030 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-10-24 02:26:00,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-24 02:26:00,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-24 02:26:00,051 INFO L87 Difference]: Start difference. First operand 1778 states. Second operand 3 states. [2018-10-24 02:26:15,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 02:26:15,128 INFO L93 Difference]: Finished difference Result 4998 states and 9417 transitions. [2018-10-24 02:26:15,133 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-24 02:26:15,134 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2018-10-24 02:26:15,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 02:26:15,182 INFO L225 Difference]: With dead ends: 4998 [2018-10-24 02:26:15,182 INFO L226 Difference]: Without dead ends: 3218 [2018-10-24 02:26:15,195 INFO L605 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 [2018-10-24 02:26:15,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3218 states. [2018-10-24 02:26:15,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3218 to 3215. [2018-10-24 02:26:15,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3215 states. [2018-10-24 02:26:15,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3215 states to 3215 states and 5854 transitions. [2018-10-24 02:26:15,415 INFO L78 Accepts]: Start accepts. Automaton has 3215 states and 5854 transitions. Word has length 38 [2018-10-24 02:26:15,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 02:26:15,416 INFO L481 AbstractCegarLoop]: Abstraction has 3215 states and 5854 transitions. [2018-10-24 02:26:15,416 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-10-24 02:26:15,417 INFO L276 IsEmpty]: Start isEmpty. Operand 3215 states and 5854 transitions. [2018-10-24 02:26:15,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2018-10-24 02:26:15,426 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 02:26:15,429 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 02:26:15,429 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 02:26:15,430 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:26:15,430 INFO L82 PathProgramCache]: Analyzing trace with hash 1473327961, now seen corresponding path program 1 times [2018-10-24 02:26:15,430 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 02:26:15,431 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:26:15,431 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 02:26:15,432 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:26:15,432 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 02:26:15,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 02:26:15,864 WARN L179 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 02:26:16,261 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 02:26:16,262 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 02:26:16,262 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 02:26:16,262 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 02:26:16,265 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 02:26:16,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 02:26:16,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 02:26:16,266 INFO L87 Difference]: Start difference. First operand 3215 states and 5854 transitions. Second operand 6 states. [2018-10-24 02:26:44,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 02:26:44,405 INFO L93 Difference]: Finished difference Result 9340 states and 16946 transitions. [2018-10-24 02:26:44,408 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 02:26:44,408 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 110 [2018-10-24 02:26:44,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 02:26:44,450 INFO L225 Difference]: With dead ends: 9340 [2018-10-24 02:26:44,450 INFO L226 Difference]: Without dead ends: 6131 [2018-10-24 02:26:44,461 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 02:26:44,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6131 states. [2018-10-24 02:26:44,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6131 to 6091. [2018-10-24 02:26:44,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6091 states. [2018-10-24 02:26:44,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6091 states to 6091 states and 9637 transitions. [2018-10-24 02:26:44,614 INFO L78 Accepts]: Start accepts. Automaton has 6091 states and 9637 transitions. Word has length 110 [2018-10-24 02:26:44,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 02:26:44,615 INFO L481 AbstractCegarLoop]: Abstraction has 6091 states and 9637 transitions. [2018-10-24 02:26:44,615 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 02:26:44,615 INFO L276 IsEmpty]: Start isEmpty. Operand 6091 states and 9637 transitions. [2018-10-24 02:26:44,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-10-24 02:26:44,618 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 02:26:44,618 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 02:26:44,619 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 02:26:44,619 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:26:44,619 INFO L82 PathProgramCache]: Analyzing trace with hash 887803694, now seen corresponding path program 1 times [2018-10-24 02:26:44,619 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 02:26:44,620 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:26:44,620 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 02:26:44,620 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:26:44,621 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 02:26:44,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 02:26:44,839 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 02:26:44,900 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 02:26:44,901 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 02:26:44,901 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 02:26:44,901 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 02:26:44,902 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 02:26:44,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 02:26:44,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 02:26:44,903 INFO L87 Difference]: Start difference. First operand 6091 states and 9637 transitions. Second operand 6 states. [2018-10-24 02:27:10,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 02:27:10,204 INFO L93 Difference]: Finished difference Result 21088 states and 34222 transitions. [2018-10-24 02:27:10,205 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 02:27:10,205 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 112 [2018-10-24 02:27:10,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 02:27:10,271 INFO L225 Difference]: With dead ends: 21088 [2018-10-24 02:27:10,271 INFO L226 Difference]: Without dead ends: 15003 [2018-10-24 02:27:10,295 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 02:27:10,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15003 states. [2018-10-24 02:27:10,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15003 to 14814. [2018-10-24 02:27:10,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14814 states. [2018-10-24 02:27:10,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14814 states to 14814 states and 22420 transitions. [2018-10-24 02:27:10,658 INFO L78 Accepts]: Start accepts. Automaton has 14814 states and 22420 transitions. Word has length 112 [2018-10-24 02:27:10,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 02:27:10,659 INFO L481 AbstractCegarLoop]: Abstraction has 14814 states and 22420 transitions. [2018-10-24 02:27:10,659 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 02:27:10,659 INFO L276 IsEmpty]: Start isEmpty. Operand 14814 states and 22420 transitions. [2018-10-24 02:27:10,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2018-10-24 02:27:10,664 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 02:27:10,664 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 02:27:10,664 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 02:27:10,665 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:27:10,665 INFO L82 PathProgramCache]: Analyzing trace with hash 235338043, now seen corresponding path program 1 times [2018-10-24 02:27:10,665 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 02:27:10,666 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:27:10,666 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 02:27:10,666 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:27:10,666 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 02:27:10,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 02:27:10,987 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 02:27:10,988 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 02:27:10,988 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 02:27:10,988 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 02:27:10,989 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 02:27:10,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 02:27:10,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 02:27:10,990 INFO L87 Difference]: Start difference. First operand 14814 states and 22420 transitions. Second operand 5 states. [2018-10-24 02:27:38,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 02:27:38,932 INFO L93 Difference]: Finished difference Result 45421 states and 70728 transitions. [2018-10-24 02:27:38,933 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-10-24 02:27:38,933 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2018-10-24 02:27:38,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 02:27:39,057 INFO L225 Difference]: With dead ends: 45421 [2018-10-24 02:27:39,058 INFO L226 Difference]: Without dead ends: 30613 [2018-10-24 02:27:39,098 INFO L605 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 [2018-10-24 02:27:39,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30613 states. [2018-10-24 02:27:39,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30613 to 30143. [2018-10-24 02:27:39,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30143 states. [2018-10-24 02:27:39,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30143 states to 30143 states and 41642 transitions. [2018-10-24 02:27:39,673 INFO L78 Accepts]: Start accepts. Automaton has 30143 states and 41642 transitions. Word has length 143 [2018-10-24 02:27:39,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 02:27:39,673 INFO L481 AbstractCegarLoop]: Abstraction has 30143 states and 41642 transitions. [2018-10-24 02:27:39,673 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 02:27:39,674 INFO L276 IsEmpty]: Start isEmpty. Operand 30143 states and 41642 transitions. [2018-10-24 02:27:39,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2018-10-24 02:27:39,682 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 02:27:39,683 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 02:27:39,683 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 02:27:39,683 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:27:39,683 INFO L82 PathProgramCache]: Analyzing trace with hash -151637188, now seen corresponding path program 1 times [2018-10-24 02:27:39,683 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 02:27:39,684 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:27:39,684 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 02:27:39,685 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 02:27:39,685 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 02:27:39,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 02:27:39,996 WARN L179 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-10-24 02:27:40,360 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 62 proven. 65 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 02:27:40,361 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 02:27:40,361 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 02:27:40,362 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 210 with the following transitions: [2018-10-24 02:27:40,364 INFO L202 CegarAbsIntRunner]: [0], [1], [5227], [5234], [5242], [5250], [5258], [5266], [5274], [5282], [5290], [5298], [5306], [5314], [5322], [5330], [5338], [5346], [5354], [5362], [5370], [5378], [5386], [5394], [5402], [5410], [5418], [5426], [5430], [5432], [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], [5770], [5774], [5778], [5782], [5786], [5797], [5808], [5819], [5823], [5827], [5838], [5842], [5846], [5850], [5854], [5858], [5862], [5866], [5870], [5874], [5877], [6802], [6806], [6810], [6816], [6820], [6822], [6837], [6838], [6839], [6841], [6842] [2018-10-24 02:27:40,432 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 02:27:40,432 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 02:27:44,182 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 02:27:44,221 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 02:27:44,223 INFO L272 AbstractInterpreter]: Visited 104 different actions 104 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-10-24 02:27:44,243 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 02:27:44,243 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 02:27:46,373 INFO L232 lantSequenceWeakener]: Weakened 199 states. On average, predicates are now at 75.46% of their original sizes. [2018-10-24 02:27:46,373 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 02:27:46,840 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 02:27:46,842 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 02:27:46,842 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-10-24 02:27:46,842 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 02:27:46,843 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 02:27:46,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 02:27:46,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 02:27:46,843 INFO L87 Difference]: Start difference. First operand 30143 states and 41642 transitions. Second operand 7 states. Received shutdown request... [2018-10-24 02:29:14,313 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 02:29:14,314 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 02:29:14,319 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 02:29:14,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 02:29:14 BoogieIcfgContainer [2018-10-24 02:29:14,319 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 02:29:14,320 INFO L168 Benchmark]: Toolchain (without parser) took 218798.14 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 3.5 GB in the end (delta: -2.1 GB). Peak memory consumption was 485.8 MB. Max. memory is 7.1 GB. [2018-10-24 02:29:14,321 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 02:29:14,322 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3704.26 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 985.7 MB in the end (delta: 392.7 MB). Peak memory consumption was 392.7 MB. Max. memory is 7.1 GB. [2018-10-24 02:29:14,323 INFO L168 Benchmark]: Boogie Procedure Inliner took 751.66 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 837.8 MB). Free memory was 985.7 MB in the beginning and 2.2 GB in the end (delta: -1.2 GB). Peak memory consumption was 117.1 MB. Max. memory is 7.1 GB. [2018-10-24 02:29:14,324 INFO L168 Benchmark]: Boogie Preprocessor took 689.70 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 53.2 MB). Peak memory consumption was 53.2 MB. Max. memory is 7.1 GB. [2018-10-24 02:29:14,325 INFO L168 Benchmark]: RCFGBuilder took 18630.80 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 178.8 MB). Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 482.1 MB). Peak memory consumption was 667.2 MB. Max. memory is 7.1 GB. [2018-10-24 02:29:14,326 INFO L168 Benchmark]: TraceAbstraction took 195016.51 ms. Allocated memory was 2.5 GB in the beginning and 4.1 GB in the end (delta: 1.6 GB). Free memory was 1.7 GB in the beginning and 3.5 GB in the end (delta: -1.8 GB). There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 02:29:14,332 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.5 GB. Free memory is still 1.4 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 3704.26 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 985.7 MB in the end (delta: 392.7 MB). Peak memory consumption was 392.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 751.66 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 837.8 MB). Free memory was 985.7 MB in the beginning and 2.2 GB in the end (delta: -1.2 GB). Peak memory consumption was 117.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 689.70 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 53.2 MB). Peak memory consumption was 53.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 18630.80 ms. Allocated memory was 2.3 GB in the beginning and 2.5 GB in the end (delta: 178.8 MB). Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 482.1 MB). Peak memory consumption was 667.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 195016.51 ms. Allocated memory was 2.5 GB in the beginning and 4.1 GB in the end (delta: 1.6 GB). Free memory was 1.7 GB in the beginning and 3.5 GB in the end (delta: -1.8 GB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 109]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 109). Cancelled while BasicCegarLoop was constructing difference of abstraction (30143states) and FLOYD_HOARE automaton (currently 7 states, 7 states before enhancement),while ReachableStatesComputation was computing reachable states (14027 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 1778 locations, 1 error locations. TIMEOUT Result, 194.9s OverallTime, 5 OverallIterations, 3 TraceHistogramMax, 184.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 3016 SDtfs, 22267 SDslu, 3157 SDs, 0 SdLazy, 40187 SolverSat, 9552 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 139.3s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 243 GetRequests, 212 SyntacticMatches, 4 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 1.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30143occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 3.8s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9955325443786981 AbsIntWeakeningRatio, 0.1346153846153846 AbsIntAvgWeakeningVarsNumRemoved, 1030.9759615384614 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 1.2s AutomataMinimizationTime, 4 MinimizatonAttempts, 702 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 612 NumberOfCodeBlocks, 612 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 607 ConstructedInterpolants, 0 QuantifiedInterpolants, 292343 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 160/225 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown