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_label36_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 21:23:12,636 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 21:23:12,638 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 21:23:12,650 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 21:23:12,651 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 21:23:12,654 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 21:23:12,655 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 21:23:12,660 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 21:23:12,662 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 21:23:12,664 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 21:23:12,665 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 21:23:12,665 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 21:23:12,669 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 21:23:12,670 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 21:23:12,674 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 21:23:12,675 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 21:23:12,675 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 21:23:12,679 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 21:23:12,681 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 21:23:12,683 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 21:23:12,684 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 21:23:12,685 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 21:23:12,688 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 21:23:12,688 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 21:23:12,688 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 21:23:12,690 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 21:23:12,691 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 21:23:12,692 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 21:23:12,693 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 21:23:12,694 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 21:23:12,694 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 21:23:12,695 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-11-07 21:23:12,698 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 [2018-11-07 21:23:12,730 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 21:23:12,730 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 21:23:12,734 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 21:23:12,734 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 21:23:12,734 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 21:23:12,734 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 21:23:12,734 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 21:23:12,735 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 21:23:12,735 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 21:23:12,735 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 21:23:12,735 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 21:23:12,736 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 21:23:12,736 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 21:23:12,737 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 21:23:12,737 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 21:23:12,737 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 21:23:12,738 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 21:23:12,738 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 21:23:12,738 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 21:23:12,738 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 21:23:12,740 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 21:23:12,740 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 21:23:12,741 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 21:23:12,741 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 21:23:12,741 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 21:23:12,741 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 21:23:12,741 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 21:23:12,742 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 21:23:12,742 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 21:23:12,742 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 21:23:12,742 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 21:23:12,742 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 21:23:12,743 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 21:23:12,743 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 21:23:12,743 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 21:23:12,788 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 21:23:12,807 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 21:23:12,812 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 21:23:12,814 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 21:23:12,814 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 21:23:12,815 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem19_label36_true-unreach-call.c [2018-11-07 21:23:12,885 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/633497624/cd1fec4602fd4eb5a92d236417e3db25/FLAGc7ea5244b [2018-11-07 21:23:13,805 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 21:23:13,806 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem19_label36_true-unreach-call.c [2018-11-07 21:23:13,853 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/633497624/cd1fec4602fd4eb5a92d236417e3db25/FLAGc7ea5244b [2018-11-07 21:23:13,869 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/633497624/cd1fec4602fd4eb5a92d236417e3db25 [2018-11-07 21:23:13,882 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 21:23:13,883 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 21:23:13,885 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 21:23:13,885 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 21:23:13,890 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 21:23:13,891 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:23:13" (1/1) ... [2018-11-07 21:23:13,894 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ebeeaf0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:23:13, skipping insertion in model container [2018-11-07 21:23:13,895 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:23:13" (1/1) ... [2018-11-07 21:23:13,907 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 21:23:14,134 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 21:23:16,185 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 21:23:16,190 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 21:23:17,461 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 21:23:17,524 INFO L193 MainTranslator]: Completed translation [2018-11-07 21:23:17,524 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:23:17 WrapperNode [2018-11-07 21:23:17,524 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 21:23:17,525 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 21:23:17,526 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 21:23:17,526 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 21:23:17,536 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:23:17" (1/1) ... [2018-11-07 21:23:18,030 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:23:17" (1/1) ... [2018-11-07 21:23:18,044 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 21:23:18,044 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 21:23:18,044 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 21:23:18,045 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 21:23:18,056 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:23:17" (1/1) ... [2018-11-07 21:23:18,057 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:23:17" (1/1) ... [2018-11-07 21:23:18,104 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:23:17" (1/1) ... [2018-11-07 21:23:18,105 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:23:17" (1/1) ... [2018-11-07 21:23:18,313 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:23:17" (1/1) ... [2018-11-07 21:23:18,377 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:23:17" (1/1) ... [2018-11-07 21:23:18,468 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:23:17" (1/1) ... [2018-11-07 21:23:18,585 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 21:23:18,586 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 21:23:18,586 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 21:23:18,586 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 21:23:18,587 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:23:17" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 21:23:18,655 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 21:23:18,656 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 21:23:18,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 21:23:18,656 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2018-11-07 21:23:18,656 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2018-11-07 21:23:18,656 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2018-11-07 21:23:18,656 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2018-11-07 21:23:18,657 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2018-11-07 21:23:18,657 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2018-11-07 21:23:18,657 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2018-11-07 21:23:18,657 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2018-11-07 21:23:18,657 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 21:23:18,658 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 21:23:18,658 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 21:23:18,659 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 21:23:18,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 21:23:18,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 21:23:18,659 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 21:23:18,659 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 21:23:33,941 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 21:23:33,942 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:23:33 BoogieIcfgContainer [2018-11-07 21:23:33,942 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 21:23:33,944 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 21:23:33,944 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 21:23:33,947 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 21:23:33,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 09:23:13" (1/3) ... [2018-11-07 21:23:33,949 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b976946 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:23:33, skipping insertion in model container [2018-11-07 21:23:33,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:23:17" (2/3) ... [2018-11-07 21:23:33,949 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b976946 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:23:33, skipping insertion in model container [2018-11-07 21:23:33,949 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:23:33" (3/3) ... [2018-11-07 21:23:33,951 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem19_label36_true-unreach-call.c [2018-11-07 21:23:33,962 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 21:23:33,978 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 21:23:33,996 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 21:23:34,064 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 21:23:34,064 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 21:23:34,064 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 21:23:34,064 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 21:23:34,064 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 21:23:34,065 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 21:23:34,065 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 21:23:34,065 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 21:23:34,124 INFO L276 IsEmpty]: Start isEmpty. Operand 1778 states. [2018-11-07 21:23:34,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-11-07 21:23:34,132 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:23:34,133 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 21:23:34,136 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:23:34,141 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:23:34,142 INFO L82 PathProgramCache]: Analyzing trace with hash -1662781076, now seen corresponding path program 1 times [2018-11-07 21:23:34,144 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:23:34,200 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:23:34,200 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:23:34,200 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:23:34,200 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:23:34,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:23:34,641 WARN L179 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 21:23:34,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 21:23:34,770 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 21:23:34,770 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 21:23:34,771 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:23:34,784 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 21:23:34,801 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 21:23:34,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 21:23:34,805 INFO L87 Difference]: Start difference. First operand 1778 states. Second operand 3 states. [2018-11-07 21:23:48,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:23:48,547 INFO L93 Difference]: Finished difference Result 4999 states and 9420 transitions. [2018-11-07 21:23:48,548 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 21:23:48,549 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 40 [2018-11-07 21:23:48,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:23:48,595 INFO L225 Difference]: With dead ends: 4999 [2018-11-07 21:23:48,595 INFO L226 Difference]: Without dead ends: 3219 [2018-11-07 21:23:48,609 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 21:23:48,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3219 states. [2018-11-07 21:23:48,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3219 to 3215. [2018-11-07 21:23:48,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3215 states. [2018-11-07 21:23:48,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3215 states to 3215 states and 5845 transitions. [2018-11-07 21:23:48,833 INFO L78 Accepts]: Start accepts. Automaton has 3215 states and 5845 transitions. Word has length 40 [2018-11-07 21:23:48,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:23:48,834 INFO L480 AbstractCegarLoop]: Abstraction has 3215 states and 5845 transitions. [2018-11-07 21:23:48,834 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 21:23:48,834 INFO L276 IsEmpty]: Start isEmpty. Operand 3215 states and 5845 transitions. [2018-11-07 21:23:48,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2018-11-07 21:23:48,841 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:23:48,842 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 21:23:48,842 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:23:48,842 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:23:48,843 INFO L82 PathProgramCache]: Analyzing trace with hash -997001405, now seen corresponding path program 1 times [2018-11-07 21:23:48,843 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:23:48,844 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:23:48,844 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:23:48,844 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:23:48,844 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:23:48,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:23:49,213 WARN L179 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 21:23:49,596 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 21:23:49,597 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 21:23:49,597 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 21:23:49,597 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:23:49,599 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 21:23:49,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 21:23:49,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 21:23:49,600 INFO L87 Difference]: Start difference. First operand 3215 states and 5845 transitions. Second operand 6 states. [2018-11-07 21:24:13,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:24:13,165 INFO L93 Difference]: Finished difference Result 9331 states and 16910 transitions. [2018-11-07 21:24:13,177 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 21:24:13,177 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 112 [2018-11-07 21:24:13,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:24:13,215 INFO L225 Difference]: With dead ends: 9331 [2018-11-07 21:24:13,215 INFO L226 Difference]: Without dead ends: 6122 [2018-11-07 21:24:13,229 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 [2018-11-07 21:24:13,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6122 states. [2018-11-07 21:24:13,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6122 to 6084. [2018-11-07 21:24:13,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6084 states. [2018-11-07 21:24:13,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6084 states to 6084 states and 9616 transitions. [2018-11-07 21:24:13,419 INFO L78 Accepts]: Start accepts. Automaton has 6084 states and 9616 transitions. Word has length 112 [2018-11-07 21:24:13,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:24:13,419 INFO L480 AbstractCegarLoop]: Abstraction has 6084 states and 9616 transitions. [2018-11-07 21:24:13,419 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 21:24:13,420 INFO L276 IsEmpty]: Start isEmpty. Operand 6084 states and 9616 transitions. [2018-11-07 21:24:13,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2018-11-07 21:24:13,430 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:24:13,431 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 21:24:13,431 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:24:13,431 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:24:13,431 INFO L82 PathProgramCache]: Analyzing trace with hash -2068825087, now seen corresponding path program 1 times [2018-11-07 21:24:13,431 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:24:13,433 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:24:13,434 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:24:13,434 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:24:13,434 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:24:13,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:24:13,799 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 21:24:13,799 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 21:24:13,799 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 21:24:13,801 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:24:13,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 21:24:13,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 21:24:13,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-07 21:24:13,802 INFO L87 Difference]: Start difference. First operand 6084 states and 9616 transitions. Second operand 6 states. [2018-11-07 21:24:41,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:24:41,366 INFO L93 Difference]: Finished difference Result 24232 states and 39679 transitions. [2018-11-07 21:24:41,367 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-07 21:24:41,367 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 130 [2018-11-07 21:24:41,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:24:41,467 INFO L225 Difference]: With dead ends: 24232 [2018-11-07 21:24:41,467 INFO L226 Difference]: Without dead ends: 18154 [2018-11-07 21:24:41,505 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-11-07 21:24:41,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18154 states. [2018-11-07 21:24:41,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18154 to 18078. [2018-11-07 21:24:41,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18078 states. [2018-11-07 21:24:42,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18078 states to 18078 states and 25605 transitions. [2018-11-07 21:24:42,009 INFO L78 Accepts]: Start accepts. Automaton has 18078 states and 25605 transitions. Word has length 130 [2018-11-07 21:24:42,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:24:42,010 INFO L480 AbstractCegarLoop]: Abstraction has 18078 states and 25605 transitions. [2018-11-07 21:24:42,010 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 21:24:42,010 INFO L276 IsEmpty]: Start isEmpty. Operand 18078 states and 25605 transitions. [2018-11-07 21:24:42,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2018-11-07 21:24:42,017 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:24:42,017 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 21:24:42,017 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:24:42,020 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:24:42,020 INFO L82 PathProgramCache]: Analyzing trace with hash -162888064, now seen corresponding path program 1 times [2018-11-07 21:24:42,020 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:24:42,021 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:24:42,021 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:24:42,021 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:24:42,022 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:24:42,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:24:42,440 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 21:24:42,440 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 21:24:42,441 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 21:24:42,441 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:24:42,441 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 21:24:42,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 21:24:42,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 21:24:42,443 INFO L87 Difference]: Start difference. First operand 18078 states and 25605 transitions. Second operand 5 states. [2018-11-07 21:24:58,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:24:58,305 INFO L93 Difference]: Finished difference Result 56174 states and 84459 transitions. [2018-11-07 21:24:58,305 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-07 21:24:58,305 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 175 [2018-11-07 21:24:58,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:24:58,473 INFO L225 Difference]: With dead ends: 56174 [2018-11-07 21:24:58,473 INFO L226 Difference]: Without dead ends: 38102 [2018-11-07 21:24:58,528 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 21:24:58,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38102 states. [2018-11-07 21:24:59,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38102 to 36927. [2018-11-07 21:24:59,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36927 states. [2018-11-07 21:24:59,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36927 states to 36927 states and 49675 transitions. [2018-11-07 21:24:59,502 INFO L78 Accepts]: Start accepts. Automaton has 36927 states and 49675 transitions. Word has length 175 [2018-11-07 21:24:59,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:24:59,503 INFO L480 AbstractCegarLoop]: Abstraction has 36927 states and 49675 transitions. [2018-11-07 21:24:59,503 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 21:24:59,504 INFO L276 IsEmpty]: Start isEmpty. Operand 36927 states and 49675 transitions. [2018-11-07 21:24:59,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2018-11-07 21:24:59,511 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:24:59,513 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 21:24:59,513 INFO L423 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:24:59,514 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:24:59,514 INFO L82 PathProgramCache]: Analyzing trace with hash 573942238, now seen corresponding path program 1 times [2018-11-07 21:24:59,514 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:24:59,515 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:24:59,515 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:24:59,515 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:24:59,516 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:24:59,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:25:00,071 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 66 proven. 68 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-07 21:25:00,072 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 21:25:00,072 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 21:25:00,073 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 196 with the following transitions: [2018-11-07 21:25:00,076 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], [5434], [5442], [5446], [5448], [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], [5745], [5746], [5750], [5754], [5758], [5762], [5766], [5770], [5774], [5778], [5781], [6802], [6806], [6810], [6816], [6820], [6822], [6837], [6838], [6839], [6841], [6842] [2018-11-07 21:25:00,152 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 21:25:00,152 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 21:25:00,686 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 21:25:00,688 INFO L272 AbstractInterpreter]: Visited 87 different actions 87 times. Never merged. Never widened. Never found a fixpoint. Largest state had 26 variables. [2018-11-07 21:25:00,726 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:25:00,726 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 21:25:01,524 INFO L227 lantSequenceWeakener]: Weakened 186 states. On average, predicates are now at 75.4% of their original sizes. [2018-11-07 21:25:01,525 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 21:25:01,892 INFO L415 sIntCurrentIteration]: We unified 194 AI predicates to 194 [2018-11-07 21:25:01,893 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 21:25:01,894 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 21:25:01,894 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-11-07 21:25:01,894 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:25:01,895 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-07 21:25:01,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-07 21:25:01,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-11-07 21:25:01,895 INFO L87 Difference]: Start difference. First operand 36927 states and 49675 transitions. Second operand 7 states. [2018-11-07 21:25:09,474 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 21:25:52,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:25:52,267 INFO L93 Difference]: Finished difference Result 75240 states and 100940 transitions. [2018-11-07 21:25:52,267 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 21:25:52,268 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 195 [2018-11-07 21:25:52,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:25:52,381 INFO L225 Difference]: With dead ends: 75240 [2018-11-07 21:25:52,381 INFO L226 Difference]: Without dead ends: 38319 [2018-11-07 21:25:52,448 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 195 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-11-07 21:25:52,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38319 states. [2018-11-07 21:25:53,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38319 to 38317. [2018-11-07 21:25:53,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38317 states. [2018-11-07 21:25:53,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38317 states to 38317 states and 51081 transitions. [2018-11-07 21:25:53,176 INFO L78 Accepts]: Start accepts. Automaton has 38317 states and 51081 transitions. Word has length 195 [2018-11-07 21:25:53,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:25:53,177 INFO L480 AbstractCegarLoop]: Abstraction has 38317 states and 51081 transitions. [2018-11-07 21:25:53,177 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-07 21:25:53,177 INFO L276 IsEmpty]: Start isEmpty. Operand 38317 states and 51081 transitions. [2018-11-07 21:25:53,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 436 [2018-11-07 21:25:53,190 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:25:53,191 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-07 21:25:53,191 INFO L423 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:25:53,191 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:25:53,192 INFO L82 PathProgramCache]: Analyzing trace with hash -104552449, now seen corresponding path program 1 times [2018-11-07 21:25:53,192 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:25:53,193 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:25:53,193 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:25:53,193 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:25:53,193 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:25:53,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:25:55,123 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 105 proven. 138 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2018-11-07 21:25:55,124 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 21:25:55,124 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 21:25:55,124 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 436 with the following transitions: [2018-11-07 21:25:55,125 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], [5434], [5442], [5446], [5448], [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], [5745], [5746], [5750], [5754], [5758], [5762], [5766], [5770], [5774], [5778], [5781], [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], [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], [6560], [6802], [6806], [6810], [6816], [6820], [6822], [6837], [6838], [6839], [6841], [6842] [2018-11-07 21:25:55,140 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 21:25:55,140 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 21:25:55,963 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 21:25:55,963 INFO L272 AbstractInterpreter]: Visited 249 different actions 494 times. Merged at 5 different actions 7 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-07 21:25:56,001 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:25:56,002 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 21:25:57,113 INFO L227 lantSequenceWeakener]: Weakened 107 states. On average, predicates are now at 75.31% of their original sizes. [2018-11-07 21:25:57,113 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 21:25:58,591 INFO L415 sIntCurrentIteration]: We unified 434 AI predicates to 434 [2018-11-07 21:25:58,591 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 21:25:58,591 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 21:25:58,592 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [26] imperfect sequences [5] total 29 [2018-11-07 21:25:58,592 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:25:58,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-11-07 21:25:58,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-11-07 21:25:58,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=486, Unknown=0, NotChecked=0, Total=650 [2018-11-07 21:25:58,594 INFO L87 Difference]: Start difference. First operand 38317 states and 51081 transitions. Second operand 26 states. [2018-11-07 21:26:25,899 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-11-07 21:26:41,411 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-11-07 21:26:41,411 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 21:26:41,417 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 21:26:41,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 09:26:41 BoogieIcfgContainer [2018-11-07 21:26:41,417 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 21:26:41,418 INFO L168 Benchmark]: Toolchain (without parser) took 207536.11 ms. Allocated memory was 1.5 GB in the beginning and 3.8 GB in the end (delta: 2.3 GB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -808.0 MB). Peak memory consumption was 1.5 GB. Max. memory is 7.1 GB. [2018-11-07 21:26:41,420 INFO L168 Benchmark]: CDTParser took 0.22 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. [2018-11-07 21:26:41,420 INFO L168 Benchmark]: CACSL2BoogieTranslator took 3639.98 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: 402.5 MB). Peak memory consumption was 402.5 MB. Max. memory is 7.1 GB. [2018-11-07 21:26:41,421 INFO L168 Benchmark]: Boogie Procedure Inliner took 518.61 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 854.6 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. [2018-11-07 21:26:41,422 INFO L168 Benchmark]: Boogie Preprocessor took 541.47 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 51.6 MB). Peak memory consumption was 51.6 MB. Max. memory is 7.1 GB. [2018-11-07 21:26:41,423 INFO L168 Benchmark]: RCFGBuilder took 15356.63 ms. Allocated memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: 144.2 MB). Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 540.7 MB). Peak memory consumption was 684.9 MB. Max. memory is 7.1 GB. [2018-11-07 21:26:41,426 INFO L168 Benchmark]: TraceAbstraction took 187473.74 ms. Allocated memory was 2.5 GB in the beginning and 3.8 GB in the end (delta: 1.3 GB). Free memory was 1.7 GB in the beginning and 2.2 GB in the end (delta: -506.1 MB). Peak memory consumption was 766.3 MB. Max. memory is 7.1 GB. [2018-11-07 21:26:41,434 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 3639.98 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: 402.5 MB). Peak memory consumption was 402.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 518.61 ms. Allocated memory was 1.5 GB in the beginning and 2.4 GB in the end (delta: 854.6 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 541.47 ms. Allocated memory is still 2.4 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 51.6 MB). Peak memory consumption was 51.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 15356.63 ms. Allocated memory was 2.4 GB in the beginning and 2.5 GB in the end (delta: 144.2 MB). Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 540.7 MB). Peak memory consumption was 684.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 187473.74 ms. Allocated memory was 2.5 GB in the beginning and 3.8 GB in the end (delta: 1.3 GB). Free memory was 1.7 GB in the beginning and 2.2 GB in the end (delta: -506.1 MB). Peak memory consumption was 766.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 115]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 115). Cancelled while BasicCegarLoop was constructing difference of abstraction (38317states) and FLOYD_HOARE automaton (currently 24 states, 26 states before enhancement),while ReachableStatesComputation was computing reachable states (10570 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 1778 locations, 1 error locations. TIMEOUT Result, 187.3s OverallTime, 6 OverallIterations, 4 TraceHistogramMax, 174.6s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 4452 SDtfs, 29973 SDslu, 3462 SDs, 0 SdLazy, 47013 SolverSat, 10044 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 95.5s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 672 GetRequests, 609 SyntacticMatches, 3 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 3.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38317occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 1.5s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.9977191745760008 AbsIntWeakeningRatio, 0.09554140127388536 AbsIntAvgWeakeningVarsNumRemoved, 9.729299363057326 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 2.5s AutomataMinimizationTime, 5 MinimizatonAttempts, 1295 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 1087 NumberOfCodeBlocks, 1087 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 1081 ConstructedInterpolants, 0 QuantifiedInterpolants, 898172 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 359/565 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown