java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem19_label50_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-63daa26 [2018-11-12 17:03:40,505 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-12 17:03:40,507 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-12 17:03:40,519 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-12 17:03:40,520 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-12 17:03:40,521 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-12 17:03:40,522 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-12 17:03:40,524 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-12 17:03:40,525 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-12 17:03:40,526 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-12 17:03:40,527 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-12 17:03:40,527 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-12 17:03:40,528 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-12 17:03:40,529 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-12 17:03:40,531 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-12 17:03:40,531 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-12 17:03:40,532 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-12 17:03:40,534 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-12 17:03:40,536 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-12 17:03:40,538 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-12 17:03:40,539 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-12 17:03:40,540 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-12 17:03:40,545 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-12 17:03:40,545 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-12 17:03:40,545 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-12 17:03:40,546 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-12 17:03:40,549 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-12 17:03:40,550 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-12 17:03:40,554 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-12 17:03:40,555 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-12 17:03:40,556 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-12 17:03:40,556 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-11-12 17:03:40,560 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-INT-LIM.epf [2018-11-12 17:03:40,580 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-12 17:03:40,580 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-12 17:03:40,581 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-12 17:03:40,581 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-12 17:03:40,581 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-12 17:03:40,582 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-12 17:03:40,582 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-12 17:03:40,582 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-12 17:03:40,582 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-12 17:03:40,582 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-12 17:03:40,583 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-12 17:03:40,583 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-12 17:03:40,583 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-12 17:03:40,584 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-12 17:03:40,584 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-12 17:03:40,584 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-12 17:03:40,584 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-12 17:03:40,584 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-12 17:03:40,585 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-12 17:03:40,585 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-12 17:03:40,585 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-12 17:03:40,585 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-12 17:03:40,585 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-12 17:03:40,586 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-12 17:03:40,586 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-12 17:03:40,586 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 17:03:40,586 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-12 17:03:40,587 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-12 17:03:40,587 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-12 17:03:40,587 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-12 17:03:40,587 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-12 17:03:40,587 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-12 17:03:40,588 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-12 17:03:40,588 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-12 17:03:40,588 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-12 17:03:40,632 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-12 17:03:40,648 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-12 17:03:40,654 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-12 17:03:40,656 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-12 17:03:40,656 INFO L276 PluginConnector]: CDTParser initialized [2018-11-12 17:03:40,657 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label50_false-unreach-call.c [2018-11-12 17:03:40,723 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be0088702/b4785316cad6490fbac15363eea73e32/FLAG28abbad76 [2018-11-12 17:03:41,592 INFO L298 CDTParser]: Found 1 translation units. [2018-11-12 17:03:41,593 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label50_false-unreach-call.c [2018-11-12 17:03:41,642 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be0088702/b4785316cad6490fbac15363eea73e32/FLAG28abbad76 [2018-11-12 17:03:41,667 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/be0088702/b4785316cad6490fbac15363eea73e32 [2018-11-12 17:03:41,680 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-12 17:03:41,683 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-12 17:03:41,684 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-12 17:03:41,684 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-12 17:03:41,689 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-12 17:03:41,690 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 05:03:41" (1/1) ... [2018-11-12 17:03:41,693 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e9c6596 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:03:41, skipping insertion in model container [2018-11-12 17:03:41,694 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 05:03:41" (1/1) ... [2018-11-12 17:03:41,705 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-12 17:03:41,947 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-12 17:03:43,830 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 17:03:43,836 INFO L189 MainTranslator]: Completed pre-run [2018-11-12 17:03:44,961 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-12 17:03:45,024 INFO L193 MainTranslator]: Completed translation [2018-11-12 17:03:45,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:03:45 WrapperNode [2018-11-12 17:03:45,024 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-12 17:03:45,025 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-12 17:03:45,026 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-12 17:03:45,026 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-12 17:03:45,457 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:03:45" (1/1) ... [2018-11-12 17:03:45,549 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:03:45" (1/1) ... [2018-11-12 17:03:45,562 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-12 17:03:45,562 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-12 17:03:45,562 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-12 17:03:45,562 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-12 17:03:45,574 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:03:45" (1/1) ... [2018-11-12 17:03:45,575 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:03:45" (1/1) ... [2018-11-12 17:03:45,621 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:03:45" (1/1) ... [2018-11-12 17:03:45,622 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:03:45" (1/1) ... [2018-11-12 17:03:45,820 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:03:45" (1/1) ... [2018-11-12 17:03:45,864 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:03:45" (1/1) ... [2018-11-12 17:03:45,952 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:03:45" (1/1) ... [2018-11-12 17:03:46,049 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-12 17:03:46,050 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-12 17:03:46,050 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-12 17:03:46,050 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-12 17:03:46,051 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:03:45" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-12 17:03:46,120 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-12 17:03:46,121 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-12 17:03:46,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-12 17:03:46,121 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2018-11-12 17:03:46,121 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2018-11-12 17:03:46,121 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2018-11-12 17:03:46,122 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2018-11-12 17:03:46,122 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-12 17:03:46,122 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-12 17:03:46,122 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-12 17:03:46,122 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-12 17:03:46,123 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-12 17:03:46,123 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-12 17:03:46,124 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-12 17:03:46,124 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-12 17:03:46,124 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-12 17:03:46,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-12 17:03:46,124 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-12 17:03:46,124 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-12 17:04:01,171 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-12 17:04:01,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 05:04:01 BoogieIcfgContainer [2018-11-12 17:04:01,171 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-12 17:04:01,173 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-12 17:04:01,173 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-12 17:04:01,176 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-12 17:04:01,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 05:03:41" (1/3) ... [2018-11-12 17:04:01,177 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56b2ff14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 05:04:01, skipping insertion in model container [2018-11-12 17:04:01,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 05:03:45" (2/3) ... [2018-11-12 17:04:01,178 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56b2ff14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 05:04:01, skipping insertion in model container [2018-11-12 17:04:01,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 05:04:01" (3/3) ... [2018-11-12 17:04:01,180 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label50_false-unreach-call.c [2018-11-12 17:04:01,191 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-12 17:04:01,202 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-12 17:04:01,220 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-12 17:04:01,278 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-12 17:04:01,279 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-12 17:04:01,279 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-12 17:04:01,279 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-12 17:04:01,279 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-12 17:04:01,279 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-12 17:04:01,279 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-12 17:04:01,280 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-12 17:04:01,359 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states. [2018-11-12 17:04:01,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-11-12 17:04:01,366 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:04:01,368 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] [2018-11-12 17:04:01,370 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:04:01,378 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:04:01,379 INFO L82 PathProgramCache]: Analyzing trace with hash -1858672342, now seen corresponding path program 1 times [2018-11-12 17:04:01,381 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:04:01,436 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:04:01,436 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:04:01,436 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:04:01,437 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:04:01,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:04:01,846 WARN L179 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 9 DAG size of output: 5 [2018-11-12 17:04:01,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 17:04:01,857 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 17:04:01,859 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-12 17:04:01,859 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 17:04:01,867 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-12 17:04:01,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-12 17:04:01,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 17:04:01,888 INFO L87 Difference]: Start difference. First operand 1778 states. Second operand 4 states. [2018-11-12 17:04:22,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 17:04:22,812 INFO L93 Difference]: Finished difference Result 6510 states and 12381 transitions. [2018-11-12 17:04:22,813 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-12 17:04:22,814 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2018-11-12 17:04:22,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 17:04:22,875 INFO L225 Difference]: With dead ends: 6510 [2018-11-12 17:04:22,875 INFO L226 Difference]: Without dead ends: 4726 [2018-11-12 17:04:22,893 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-12 17:04:22,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4726 states. [2018-11-12 17:04:23,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4726 to 4687. [2018-11-12 17:04:23,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4687 states. [2018-11-12 17:04:23,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4687 states to 4687 states and 7413 transitions. [2018-11-12 17:04:23,143 INFO L78 Accepts]: Start accepts. Automaton has 4687 states and 7413 transitions. Word has length 27 [2018-11-12 17:04:23,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 17:04:23,144 INFO L480 AbstractCegarLoop]: Abstraction has 4687 states and 7413 transitions. [2018-11-12 17:04:23,144 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-12 17:04:23,144 INFO L276 IsEmpty]: Start isEmpty. Operand 4687 states and 7413 transitions. [2018-11-12 17:04:23,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-11-12 17:04:23,150 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:04:23,150 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-12 17:04:23,151 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:04:23,151 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:04:23,151 INFO L82 PathProgramCache]: Analyzing trace with hash -80921580, now seen corresponding path program 1 times [2018-11-12 17:04:23,151 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:04:23,152 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:04:23,153 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:04:23,153 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:04:23,153 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:04:23,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:04:23,497 WARN L179 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 17:04:23,876 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 17:04:23,876 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 17:04:23,876 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 17:04:23,876 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 17:04:23,878 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 17:04:23,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 17:04:23,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 17:04:23,880 INFO L87 Difference]: Start difference. First operand 4687 states and 7413 transitions. Second operand 6 states. [2018-11-12 17:04:50,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 17:04:50,363 INFO L93 Difference]: Finished difference Result 17857 states and 28865 transitions. [2018-11-12 17:04:50,364 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 17:04:50,364 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 99 [2018-11-12 17:04:50,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 17:04:50,427 INFO L225 Difference]: With dead ends: 17857 [2018-11-12 17:04:50,428 INFO L226 Difference]: Without dead ends: 13176 [2018-11-12 17:04:50,447 INFO L604 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 [2018-11-12 17:04:50,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13176 states. [2018-11-12 17:04:50,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13176 to 13105. [2018-11-12 17:04:50,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13105 states. [2018-11-12 17:04:50,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13105 states to 13105 states and 18702 transitions. [2018-11-12 17:04:50,767 INFO L78 Accepts]: Start accepts. Automaton has 13105 states and 18702 transitions. Word has length 99 [2018-11-12 17:04:50,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 17:04:50,768 INFO L480 AbstractCegarLoop]: Abstraction has 13105 states and 18702 transitions. [2018-11-12 17:04:50,769 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 17:04:50,769 INFO L276 IsEmpty]: Start isEmpty. Operand 13105 states and 18702 transitions. [2018-11-12 17:04:50,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2018-11-12 17:04:50,773 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:04:50,773 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-12 17:04:50,773 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:04:50,773 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:04:50,774 INFO L82 PathProgramCache]: Analyzing trace with hash -407489059, now seen corresponding path program 1 times [2018-11-12 17:04:50,774 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:04:50,775 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:04:50,775 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:04:50,775 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:04:50,775 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:04:50,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:04:51,088 WARN L179 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 17:04:51,239 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 17:04:51,239 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 17:04:51,240 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 17:04:51,242 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 17:04:51,243 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 17:04:51,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 17:04:51,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 17:04:51,243 INFO L87 Difference]: Start difference. First operand 13105 states and 18702 transitions. Second operand 6 states. [2018-11-12 17:05:12,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 17:05:12,346 INFO L93 Difference]: Finished difference Result 43695 states and 64626 transitions. [2018-11-12 17:05:12,346 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 17:05:12,346 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 101 [2018-11-12 17:05:12,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 17:05:12,447 INFO L225 Difference]: With dead ends: 43695 [2018-11-12 17:05:12,448 INFO L226 Difference]: Without dead ends: 30596 [2018-11-12 17:05:12,503 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-12 17:05:12,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30596 states. [2018-11-12 17:05:13,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30596 to 30433. [2018-11-12 17:05:13,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30433 states. [2018-11-12 17:05:13,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30433 states to 30433 states and 42880 transitions. [2018-11-12 17:05:13,311 INFO L78 Accepts]: Start accepts. Automaton has 30433 states and 42880 transitions. Word has length 101 [2018-11-12 17:05:13,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 17:05:13,312 INFO L480 AbstractCegarLoop]: Abstraction has 30433 states and 42880 transitions. [2018-11-12 17:05:13,312 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 17:05:13,312 INFO L276 IsEmpty]: Start isEmpty. Operand 30433 states and 42880 transitions. [2018-11-12 17:05:13,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2018-11-12 17:05:13,318 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:05:13,318 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-12 17:05:13,318 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:05:13,318 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:05:13,318 INFO L82 PathProgramCache]: Analyzing trace with hash -835408938, now seen corresponding path program 1 times [2018-11-12 17:05:13,319 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:05:13,319 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:05:13,320 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:05:13,321 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:05:13,321 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:05:13,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:05:13,815 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 17:05:13,815 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 17:05:13,815 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 17:05:13,815 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 17:05:13,816 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 17:05:13,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 17:05:13,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-12 17:05:13,817 INFO L87 Difference]: Start difference. First operand 30433 states and 42880 transitions. Second operand 6 states. [2018-11-12 17:05:30,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 17:05:30,763 INFO L93 Difference]: Finished difference Result 92582 states and 135336 transitions. [2018-11-12 17:05:30,768 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-12 17:05:30,768 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 109 [2018-11-12 17:05:30,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 17:05:30,940 INFO L225 Difference]: With dead ends: 92582 [2018-11-12 17:05:30,940 INFO L226 Difference]: Without dead ends: 62155 [2018-11-12 17:05:31,023 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-12 17:05:31,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62155 states. [2018-11-12 17:05:32,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62155 to 61699. [2018-11-12 17:05:32,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61699 states. [2018-11-12 17:05:32,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61699 states to 61699 states and 86749 transitions. [2018-11-12 17:05:32,131 INFO L78 Accepts]: Start accepts. Automaton has 61699 states and 86749 transitions. Word has length 109 [2018-11-12 17:05:32,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 17:05:32,132 INFO L480 AbstractCegarLoop]: Abstraction has 61699 states and 86749 transitions. [2018-11-12 17:05:32,132 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 17:05:32,132 INFO L276 IsEmpty]: Start isEmpty. Operand 61699 states and 86749 transitions. [2018-11-12 17:05:32,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2018-11-12 17:05:32,138 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:05:32,138 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 17:05:32,138 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:05:32,139 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:05:32,139 INFO L82 PathProgramCache]: Analyzing trace with hash 1782950444, now seen corresponding path program 1 times [2018-11-12 17:05:32,139 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:05:32,140 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:05:32,140 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:05:32,140 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:05:32,140 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:05:32,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:05:32,441 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 17:05:32,442 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 17:05:32,442 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-12 17:05:32,442 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 17:05:32,442 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-12 17:05:32,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-12 17:05:32,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-12 17:05:32,443 INFO L87 Difference]: Start difference. First operand 61699 states and 86749 transitions. Second operand 5 states. [2018-11-12 17:05:50,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 17:05:50,162 INFO L93 Difference]: Finished difference Result 186997 states and 273132 transitions. [2018-11-12 17:05:50,168 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-12 17:05:50,168 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 129 [2018-11-12 17:05:50,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 17:05:50,541 INFO L225 Difference]: With dead ends: 186997 [2018-11-12 17:05:50,541 INFO L226 Difference]: Without dead ends: 125304 [2018-11-12 17:05:50,656 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-12 17:05:50,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125304 states. [2018-11-12 17:05:52,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125304 to 124045. [2018-11-12 17:05:52,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124045 states. [2018-11-12 17:05:53,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124045 states to 124045 states and 162732 transitions. [2018-11-12 17:05:53,190 INFO L78 Accepts]: Start accepts. Automaton has 124045 states and 162732 transitions. Word has length 129 [2018-11-12 17:05:53,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 17:05:53,191 INFO L480 AbstractCegarLoop]: Abstraction has 124045 states and 162732 transitions. [2018-11-12 17:05:53,191 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-12 17:05:53,191 INFO L276 IsEmpty]: Start isEmpty. Operand 124045 states and 162732 transitions. [2018-11-12 17:05:53,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2018-11-12 17:05:53,194 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:05:53,194 INFO L375 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 17:05:53,195 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:05:53,195 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:05:53,195 INFO L82 PathProgramCache]: Analyzing trace with hash 6483041, now seen corresponding path program 1 times [2018-11-12 17:05:53,195 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:05:53,196 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:05:53,196 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:05:53,196 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:05:53,196 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:05:53,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:05:53,527 WARN L179 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-12 17:05:53,775 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 17:05:53,775 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-12 17:05:53,775 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-12 17:05:53,775 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 17:05:53,776 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-12 17:05:53,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-12 17:05:53,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-12 17:05:53,776 INFO L87 Difference]: Start difference. First operand 124045 states and 162732 transitions. Second operand 6 states. [2018-11-12 17:06:09,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-12 17:06:09,453 INFO L93 Difference]: Finished difference Result 280259 states and 386910 transitions. [2018-11-12 17:06:09,454 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-12 17:06:09,454 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 192 [2018-11-12 17:06:09,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-12 17:06:09,879 INFO L225 Difference]: With dead ends: 280259 [2018-11-12 17:06:09,879 INFO L226 Difference]: Without dead ends: 156220 [2018-11-12 17:06:10,037 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-12 17:06:10,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156220 states. [2018-11-12 17:06:12,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156220 to 155288. [2018-11-12 17:06:12,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 155288 states. [2018-11-12 17:06:13,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155288 states to 155288 states and 204725 transitions. [2018-11-12 17:06:13,002 INFO L78 Accepts]: Start accepts. Automaton has 155288 states and 204725 transitions. Word has length 192 [2018-11-12 17:06:13,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-12 17:06:13,002 INFO L480 AbstractCegarLoop]: Abstraction has 155288 states and 204725 transitions. [2018-11-12 17:06:13,003 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-12 17:06:13,003 INFO L276 IsEmpty]: Start isEmpty. Operand 155288 states and 204725 transitions. [2018-11-12 17:06:13,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 835 [2018-11-12 17:06:13,030 INFO L367 BasicCegarLoop]: Found error trace [2018-11-12 17:06:13,032 INFO L375 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-12 17:06:13,032 INFO L423 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-12 17:06:13,032 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:06:13,033 INFO L82 PathProgramCache]: Analyzing trace with hash -641973700, now seen corresponding path program 1 times [2018-11-12 17:06:13,033 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-12 17:06:13,034 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:06:13,034 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-12 17:06:13,034 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-12 17:06:13,034 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-12 17:06:13,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-12 17:06:15,544 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 250 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-12 17:06:15,544 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-12 17:06:15,544 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-12 17:06:15,546 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 835 with the following transitions: [2018-11-12 17:06:15,554 INFO L202 CegarAbsIntRunner]: [0], [1], [3088], [3092], [3096], [3100], [3104], [3108], [3112], [3116], [3127], [3131], [3135], [3146], [3150], [3154], [3158], [3169], [3173], [3184], [3188], [3192], [3196], [3200], [3204], [3208], [3212], [3216], [3220], [3224], [3228], [3232], [3236], [3240], [3251], [3255], [3259], [3263], [3267], [3271], [3275], [3279], [3283], [3287], [3291], [3302], [3306], [3310], [3314], [3318], [3322], [3326], [3330], [3334], [3338], [3342], [3346], [3350], [3361], [3365], [3376], [3380], [3384], [3395], [3399], [3403], [3407], [3418], [3422], [3426], [3430], [3434], [3438], [3442], [3446], [3449], [3454], [3456], [4195], [4196], [4200], [4204], [4208], [4212], [4216], [4220], [4224], [4228], [4232], [4236], [4240], [4244], [4248], [4252], [4256], [4260], [4264], [4268], [4279], [4290], [4294], [4298], [4309], [4313], [4317], [4321], [4325], [4329], [4333], [4337], [4341], [4345], [4349], [4353], [4357], [4361], [4365], [4369], [4373], [4377], [4381], [4385], [4396], [4400], [4404], [4408], [4412], [4416], [4420], [4431], [4435], [4439], [4443], [4454], [4458], [4462], [4466], [4470], [4474], [4478], [4482], [4486], [4490], [4494], [4498], [4502], [4506], [4510], [4514], [4518], [4522], [4526], [4530], [4534], [4538], [4542], [4553], [4557], [4561], [4565], [4569], [4573], [4577], [4581], [4585], [4589], [4593], [4597], [4601], [4605], [4609], [4620], [4624], [4628], [4632], [4636], [4647], [4651], [4655], [4659], [4663], [4667], [4671], [4675], [4679], [4690], [4694], [4698], [4709], [4713], [4717], [4721], [4725], [4729], [4733], [4737], [4741], [4745], [4749], [4753], [4764], [4768], [4772], [4776], [4780], [4784], [4788], [4792], [4803], [4807], [4811], [4815], [4819], [4823], [4827], [4831], [4835], [4839], [4843], [4847], [4858], [4862], [4873], [4877], [4881], [4885], [4896], [4900], [4904], [4908], [4912], [4916], [4920], [4924], [4935], [4939], [4943], [4954], [4958], [4962], [4966], [4970], [4974], [4978], [4982], [4986], [4990], [4994], [4998], [5002], [5006], [5010], [5014], [5018], [5022], [5026], [5030], [5034], [5038], [5042], [5046], [5050], [5054], [5058], [5062], [5066], [5070], [5074], [5078], [5082], [5086], [5090], [5094], [5105], [5109], [5120], [5124], [5128], [5132], [5136], [5140], [5144], [5148], [5152], [5156], [5167], [5171], [5175], [5179], [5183], [5187], [5191], [5195], [5199], [5203], [5207], [5211], [5215], [5219], [5223], [5225], [5226], [5227], [5234], [5242], [5250], [5254], [5256], [5258], [5266], [5274], [5282], [5290], [5298], [5306], [5314], [5322], [5330], [5338], [5342], [5344], [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], [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], [5878], [5882], [5886], [5890], [5894], [5898], [5902], [5906], [5910], [5914], [5918], [5922], [5926], [5930], [5934], [5938], [5942], [5946], [5950], [5954], [5958], [5962], [5966], [5977], [5981], [5985], [5996], [6000], [6004], [6008], [6012], [6016], [6020], [6024], [6028], [6032], [6036], [6040], [6051], [6055], [6059], [6063], [6067], [6071], [6075], [6079], [6083], [6087], [6091], [6102], [6106], [6110], [6121], [6125], [6129], [6140], [6144], [6148], [6152], [6156], [6160], [6164], [6168], [6172], [6176], [6180], [6184], [6188], [6192], [6196], [6200], [6204], [6208], [6212], [6216], [6220], [6224], [6228], [6232], [6236], [6240], [6251], [6255], [6259], [6263], [6267], [6278], [6282], [6286], [6290], [6294], [6298], [6302], [6306], [6310], [6314], [6325], [6329], [6333], [6344], [6348], [6352], [6356], [6360], [6371], [6375], [6379], [6383], [6387], [6391], [6402], [6413], [6417], [6420], [6421], [6425], [6429], [6440], [6444], [6455], [6459], [6463], [6467], [6471], [6475], [6486], [6490], [6494], [6498], [6502], [6506], [6510], [6514], [6525], [6529], [6533], [6537], [6541], [6545], [6549], [6553], [6557], [6561], [6565], [6569], [6573], [6577], [6581], [6585], [6589], [6593], [6604], [6608], [6619], [6623], [6634], [6645], [6649], [6653], [6657], [6661], [6665], [6669], [6673], [6677], [6681], [6685], [6689], [6693], [6697], [6701], [6712], [6716], [6727], [6731], [6735], [6739], [6743], [6747], [6751], [6755], [6759], [6763], [6767], [6771], [6775], [6779], [6783], [6787], [6791], [6795], [6799], [6801], [6802], [6806], [6810], [6816], [6820], [6822], [6833], [6834], [6835], [6836], [6837], [6838], [6839], [6841], [6842] [2018-11-12 17:06:15,651 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-12 17:06:15,652 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-12 17:06:16,554 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-12 17:06:17,300 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-12 17:06:17,302 INFO L272 AbstractInterpreter]: Visited 592 different actions 592 times. Never merged. Never widened. Performed 7568 root evaluator evaluations with a maximum evaluation depth of 6. Performed 7568 inverse root evaluator evaluations with a maximum inverse evaluation depth of 6. Never found a fixpoint. Largest state had 26 variables. [2018-11-12 17:06:17,350 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-12 17:06:17,351 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-12 17:06:18,969 INFO L227 lantSequenceWeakener]: Weakened 816 states. On average, predicates are now at 75.02% of their original sizes. [2018-11-12 17:06:18,969 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-12 17:06:20,049 INFO L415 sIntCurrentIteration]: We unified 833 AI predicates to 833 [2018-11-12 17:06:20,050 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-12 17:06:20,050 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-12 17:06:20,051 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [13] imperfect sequences [7] total 18 [2018-11-12 17:06:20,051 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-12 17:06:20,052 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-12 17:06:20,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-12 17:06:20,053 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2018-11-12 17:06:20,053 INFO L87 Difference]: Start difference. First operand 155288 states and 204725 transitions. Second operand 13 states. Received shutdown request... [2018-11-12 17:07:10,322 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-12 17:07:10,322 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-12 17:07:10,327 WARN L205 ceAbstractionStarter]: Timeout [2018-11-12 17:07:10,328 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.11 05:07:10 BoogieIcfgContainer [2018-11-12 17:07:10,328 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-12 17:07:10,329 INFO L168 Benchmark]: Toolchain (without parser) took 208647.24 ms. Allocated memory was 1.5 GB in the beginning and 4.9 GB in the end (delta: 3.3 GB). Free memory was 1.4 GB in the beginning and 3.2 GB in the end (delta: -1.8 GB). Peak memory consumption was 1.6 GB. Max. memory is 7.1 GB. [2018-11-12 17:07:10,330 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-12 17:07:10,331 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3340.98 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 391.1 MB). Peak memory consumption was 391.1 MB. Max. memory is 7.1 GB. [2018-11-12 17:07:10,331 INFO L168 Benchmark]: Boogie Procedure Inliner took 536.46 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 869.3 MB). Free memory was 1.0 GB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 98.9 MB. Max. memory is 7.1 GB. [2018-11-12 17:07:10,332 INFO L168 Benchmark]: Boogie Preprocessor took 487.18 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 51.1 MB). Peak memory consumption was 51.1 MB. Max. memory is 7.1 GB. [2018-11-12 17:07:10,333 INFO L168 Benchmark]: RCFGBuilder took 15121.97 ms. Allocated memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: 136.3 MB). Free memory was 2.3 GB in the beginning and 1.7 GB in the end (delta: 526.6 MB). Peak memory consumption was 663.0 MB. Max. memory is 7.1 GB. [2018-11-12 17:07:10,334 INFO L168 Benchmark]: TraceAbstraction took 189155.54 ms. Allocated memory was 2.5 GB in the beginning and 4.9 GB in the end (delta: 2.3 GB). Free memory was 1.7 GB in the beginning and 3.2 GB in the end (delta: -1.4 GB). Peak memory consumption was 876.3 MB. Max. memory is 7.1 GB. [2018-11-12 17:07:10,340 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 1.5 GB. Free memory is still 1.5 GB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 3340.98 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.0 GB in the end (delta: 391.1 MB). Peak memory consumption was 391.1 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 536.46 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 869.3 MB). Free memory was 1.0 GB in the beginning and 2.3 GB in the end (delta: -1.3 GB). Peak memory consumption was 98.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 487.18 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.3 GB in the end (delta: 51.1 MB). Peak memory consumption was 51.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 15121.97 ms. Allocated memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: 136.3 MB). Free memory was 2.3 GB in the beginning and 1.7 GB in the end (delta: 526.6 MB). Peak memory consumption was 663.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 189155.54 ms. Allocated memory was 2.5 GB in the beginning and 4.9 GB in the end (delta: 2.3 GB). Free memory was 1.7 GB in the beginning and 3.2 GB in the end (delta: -1.4 GB). Peak memory consumption was 876.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 76]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 76). Cancelled while BasicCegarLoop was constructing difference of abstraction (155288states) and FLOYD_HOARE automaton (currently 13 states, 13 states before enhancement),while ReachableStatesComputation was computing reachable states (60553 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 1778 locations, 1 error locations. TIMEOUT Result, 189.0s OverallTime, 7 OverallIterations, 3 TraceHistogramMax, 170.8s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4865 SDtfs, 43761 SDslu, 4971 SDs, 0 SdLazy, 61055 SolverSat, 13961 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 109.8s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 894 GetRequests, 838 SyntacticMatches, 3 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 3.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=155288occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 1.8s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9992277543428438 AbsIntWeakeningRatio, 0.04441776710684274 AbsIntAvgWeakeningVarsNumRemoved, 19.54501800720288 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 7.9s AutomataMinimizationTime, 6 MinimizatonAttempts, 2920 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.2s InterpolantComputationTime, 1491 NumberOfCodeBlocks, 1491 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 1484 ConstructedInterpolants, 0 QuantifiedInterpolants, 1674551 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 6 PerfectInterpolantSequences, 350/352 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown