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/Problem17_label36_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 21:04:21,747 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 21:04:21,749 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 21:04:21,765 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 21:04:21,766 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 21:04:21,768 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 21:04:21,769 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 21:04:21,772 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 21:04:21,775 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 21:04:21,783 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 21:04:21,784 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 21:04:21,786 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 21:04:21,787 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 21:04:21,790 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 21:04:21,791 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 21:04:21,792 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 21:04:21,793 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 21:04:21,798 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 21:04:21,799 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 21:04:21,802 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 21:04:21,805 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 21:04:21,806 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 21:04:21,810 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 21:04:21,810 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 21:04:21,810 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 21:04:21,811 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 21:04:21,812 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 21:04:21,813 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 21:04:21,815 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 21:04:21,816 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 21:04:21,818 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 21:04:21,819 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-07 21:04:21,819 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-07 21:04:21,819 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-07 21:04:21,822 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-07 21:04:21,823 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-07 21:04:21,823 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 21:04:21,851 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 21:04:21,852 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 21:04:21,852 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 21:04:21,853 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 21:04:21,853 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 21:04:21,853 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 21:04:21,854 INFO L133 SettingsManager]: * Maximum recursion depth of evaluation operations=6 [2018-11-07 21:04:21,854 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 21:04:21,854 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 21:04:21,854 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 21:04:21,854 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 21:04:21,854 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 21:04:21,855 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 21:04:21,856 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 21:04:21,856 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 21:04:21,856 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 21:04:21,856 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 21:04:21,858 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 21:04:21,858 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 21:04:21,858 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 21:04:21,859 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 21:04:21,859 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 21:04:21,859 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 21:04:21,859 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 21:04:21,859 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 21:04:21,860 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 21:04:21,860 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 21:04:21,860 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 21:04:21,860 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 21:04:21,861 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 21:04:21,861 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 21:04:21,861 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 21:04:21,861 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 21:04:21,861 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 21:04:21,862 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 21:04:21,916 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 21:04:21,935 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 21:04:21,940 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 21:04:21,942 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 21:04:21,942 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 21:04:21,943 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label36_true-unreach-call.c [2018-11-07 21:04:22,023 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fbfcf3fcb/4b4228d9d00a4815b33c4f395b46ab18/FLAG7ce113575 [2018-11-07 21:04:22,717 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 21:04:22,718 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label36_true-unreach-call.c [2018-11-07 21:04:22,743 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fbfcf3fcb/4b4228d9d00a4815b33c4f395b46ab18/FLAG7ce113575 [2018-11-07 21:04:22,762 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fbfcf3fcb/4b4228d9d00a4815b33c4f395b46ab18 [2018-11-07 21:04:22,774 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 21:04:22,778 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 21:04:22,779 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 21:04:22,782 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 21:04:22,787 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 21:04:22,788 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:04:22" (1/1) ... [2018-11-07 21:04:22,792 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55f01134 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:04:22, skipping insertion in model container [2018-11-07 21:04:22,792 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:04:22" (1/1) ... [2018-11-07 21:04:22,803 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 21:04:22,931 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 21:04:24,160 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 21:04:24,165 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 21:04:24,540 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 21:04:24,568 INFO L193 MainTranslator]: Completed translation [2018-11-07 21:04:24,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:04:24 WrapperNode [2018-11-07 21:04:24,569 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 21:04:24,570 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 21:04:24,570 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 21:04:24,571 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 21:04:24,581 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:04:24" (1/1) ... [2018-11-07 21:04:24,844 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:04:24" (1/1) ... [2018-11-07 21:04:24,858 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 21:04:24,858 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 21:04:24,859 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 21:04:24,859 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 21:04:24,870 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:04:24" (1/1) ... [2018-11-07 21:04:24,870 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:04:24" (1/1) ... [2018-11-07 21:04:24,886 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:04:24" (1/1) ... [2018-11-07 21:04:24,886 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:04:24" (1/1) ... [2018-11-07 21:04:24,977 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:04:24" (1/1) ... [2018-11-07 21:04:25,006 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:04:24" (1/1) ... [2018-11-07 21:04:25,030 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:04:24" (1/1) ... [2018-11-07 21:04:25,058 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 21:04:25,059 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 21:04:25,059 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 21:04:25,059 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 21:04:25,060 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:04:24" (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 21:04:25,128 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 21:04:25,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 21:04:25,129 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 21:04:25,129 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 21:04:25,129 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 21:04:25,129 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 21:04:25,129 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 21:04:25,130 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 21:04:25,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 21:04:25,130 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 21:04:25,130 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 21:04:34,228 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 21:04:34,229 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:04:34 BoogieIcfgContainer [2018-11-07 21:04:34,229 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 21:04:34,230 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 21:04:34,230 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 21:04:34,234 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 21:04:34,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 09:04:22" (1/3) ... [2018-11-07 21:04:34,235 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f3168 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:04:34, skipping insertion in model container [2018-11-07 21:04:34,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:04:24" (2/3) ... [2018-11-07 21:04:34,235 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f3168 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:04:34, skipping insertion in model container [2018-11-07 21:04:34,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:04:34" (3/3) ... [2018-11-07 21:04:34,237 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label36_true-unreach-call.c [2018-11-07 21:04:34,248 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 21:04:34,257 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 21:04:34,275 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 21:04:34,318 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 21:04:34,318 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 21:04:34,318 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 21:04:34,318 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 21:04:34,318 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 21:04:34,319 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 21:04:34,319 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 21:04:34,319 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 21:04:34,356 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-11-07 21:04:34,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-11-07 21:04:34,367 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:04:34,368 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:04:34,370 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:04:34,376 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:04:34,377 INFO L82 PathProgramCache]: Analyzing trace with hash 1923722508, now seen corresponding path program 1 times [2018-11-07 21:04:34,379 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:04:34,428 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:04:34,429 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:04:34,429 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:04:34,429 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:04:34,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:04:34,982 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 21:04:34,985 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 21:04:34,985 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 21:04:34,986 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:04:34,992 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 21:04:35,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 21:04:35,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 21:04:35,013 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-11-07 21:04:45,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 21:04:45,555 INFO L93 Difference]: Finished difference Result 2118 states and 3937 transitions. [2018-11-07 21:04:45,556 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 21:04:45,557 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 64 [2018-11-07 21:04:45,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 21:04:45,584 INFO L225 Difference]: With dead ends: 2118 [2018-11-07 21:04:45,584 INFO L226 Difference]: Without dead ends: 1508 [2018-11-07 21:04:45,593 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 21:04:45,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1508 states. [2018-11-07 21:04:45,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1508 to 1039. [2018-11-07 21:04:45,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1039 states. [2018-11-07 21:04:45,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1039 states to 1039 states and 1596 transitions. [2018-11-07 21:04:45,723 INFO L78 Accepts]: Start accepts. Automaton has 1039 states and 1596 transitions. Word has length 64 [2018-11-07 21:04:45,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 21:04:45,724 INFO L480 AbstractCegarLoop]: Abstraction has 1039 states and 1596 transitions. [2018-11-07 21:04:45,724 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 21:04:45,724 INFO L276 IsEmpty]: Start isEmpty. Operand 1039 states and 1596 transitions. [2018-11-07 21:04:45,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-11-07 21:04:45,732 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 21:04:45,733 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-11-07 21:04:45,733 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 21:04:45,733 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:04:45,734 INFO L82 PathProgramCache]: Analyzing trace with hash 1151590018, now seen corresponding path program 1 times [2018-11-07 21:04:45,734 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 21:04:45,735 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:04:45,735 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:04:45,735 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 21:04:45,736 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 21:04:45,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:04:46,640 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 21:04:46,640 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 21:04:46,640 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 21:04:46,642 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 140 with the following transitions: [2018-11-07 21:04:46,645 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [758], [766], [774], [782], [790], [798], [806], [814], [822], [830], [838], [846], [854], [862], [870], [878], [886], [894], [902], [910], [918], [926], [934], [942], [950], [958], [966], [974], [982], [990], [998], [1006], [1014], [1022], [1030], [1038], [1046], [1054], [1062], [1070], [1078], [1086], [1094], [1102], [1110], [1118], [1122], [1124], [1127], [1135], [1143], [1151], [1159], [1167], [1175], [1183], [1191], [1199], [1204], [1208], [1212], [1216], [1220], [1223], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-07 21:04:46,717 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, IntervalDomain] [2018-11-07 21:04:46,717 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 21:04:47,121 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 21:04:47,830 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 21:04:47,833 INFO L272 AbstractInterpreter]: Visited 83 different actions 235 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-07 21:04:47,893 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 21:04:47,895 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 21:04:47,895 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 21:04:47,895 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 21:04:47,913 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 21:04:47,913 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 21:04:48,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 21:04:48,022 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 21:05:08,818 WARN L179 SmtUtils]: Spent 20.30 s on a formula simplification. DAG size of input: 135 DAG size of output: 83 [2018-11-07 21:05:09,376 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 4 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 21:05:09,376 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 21:05:09,704 WARN L138 XnfTransformerHelper]: expecting exponential blowup for input size 28 [2018-11-07 21:05:10,426 WARN L179 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 28 [2018-11-07 21:05:10,823 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 21:05:10,855 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-11-07 21:05:10,855 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 15 [2018-11-07 21:05:10,856 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 21:05:10,858 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 21:05:10,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 21:05:10,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2018-11-07 21:05:10,859 INFO L87 Difference]: Start difference. First operand 1039 states and 1596 transitions. Second operand 6 states. Received shutdown request... [2018-11-07 21:08:52,517 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 21:08:52,518 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 21:08:52,523 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 21:08:52,524 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 09:08:52 BoogieIcfgContainer [2018-11-07 21:08:52,524 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 21:08:52,525 INFO L168 Benchmark]: Toolchain (without parser) took 269749.16 ms. Allocated memory was 1.5 GB in the beginning and 2.6 GB in the end (delta: 1.1 GB). Free memory was 1.4 GB in the beginning and 1.7 GB in the end (delta: -285.9 MB). Peak memory consumption was 820.8 MB. Max. memory is 7.1 GB. [2018-11-07 21:08:52,526 INFO L168 Benchmark]: CDTParser took 0.19 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 21:08:52,526 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1790.35 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. [2018-11-07 21:08:52,527 INFO L168 Benchmark]: Boogie Procedure Inliner took 287.95 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 772.8 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -952.2 MB). Peak memory consumption was 42.5 MB. Max. memory is 7.1 GB. [2018-11-07 21:08:52,528 INFO L168 Benchmark]: Boogie Preprocessor took 200.15 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2018-11-07 21:08:52,533 INFO L168 Benchmark]: RCFGBuilder took 9170.43 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.8 GB in the end (delta: 463.8 MB). Peak memory consumption was 463.8 MB. Max. memory is 7.1 GB. [2018-11-07 21:08:52,534 INFO L168 Benchmark]: TraceAbstraction took 258293.84 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 334.0 MB). Free memory was 1.8 GB in the beginning and 1.7 GB in the end (delta: 51.2 MB). Peak memory consumption was 385.1 MB. Max. memory is 7.1 GB. [2018-11-07 21:08:52,540 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 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 1790.35 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.3 GB in the end (delta: 137.4 MB). Peak memory consumption was 137.4 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 287.95 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 772.8 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -952.2 MB). Peak memory consumption was 42.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 200.15 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.2 GB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 9170.43 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.8 GB in the end (delta: 463.8 MB). Peak memory consumption was 463.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 258293.84 ms. Allocated memory was 2.3 GB in the beginning and 2.6 GB in the end (delta: 334.0 MB). Free memory was 1.8 GB in the beginning and 1.7 GB in the end (delta: 51.2 MB). Peak memory consumption was 385.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 179]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 179). Cancelled while BasicCegarLoop was constructing difference of abstraction (1039states) and FLOYD_HOARE automaton (currently 7 states, 6 states before enhancement),while ReachableStatesComputation was computing reachable states (3136 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 258.2s OverallTime, 2 OverallIterations, 2 TraceHistogramMax, 232.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 709 SDtfs, 3135 SDslu, 459 SDs, 0 SdLazy, 5070 SolverSat, 1843 SolverUnsat, 106 SolverUnknown, 0 SolverNotchecked, 229.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 293 GetRequests, 276 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 22.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1039occurred in iteration=1, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 1.2s AbstIntTime, 1 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 1 MinimizatonAttempts, 469 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 23.9s InterpolantComputationTime, 342 NumberOfCodeBlocks, 342 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 477 ConstructedInterpolants, 138 QuantifiedInterpolants, 968547 SizeOfPredicates, 3 NumberOfNonLiveVariables, 292 ConjunctsInSsa, 9 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 61/171 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown