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.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label07_true-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 00:59:17,697 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 00:59:17,700 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 00:59:17,713 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 00:59:17,713 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 00:59:17,714 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 00:59:17,716 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 00:59:17,718 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 00:59:17,720 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 00:59:17,721 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 00:59:17,722 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 00:59:17,722 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 00:59:17,723 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 00:59:17,724 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 00:59:17,725 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 00:59:17,726 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 00:59:17,727 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 00:59:17,729 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 00:59:17,731 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 00:59:17,733 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 00:59:17,734 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 00:59:17,736 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 00:59:17,738 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-07 00:59:17,748 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-11-07 00:59:17,765 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 00:59:17,765 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 00:59:17,766 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 00:59:17,766 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 00:59:17,766 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 00:59:17,767 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 00:59:17,767 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 00:59:17,767 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 00:59:17,767 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 00:59:17,768 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 00:59:17,768 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 00:59:17,768 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 00:59:17,769 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 00:59:17,769 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 00:59:17,769 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 00:59:17,769 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 00:59:17,769 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 00:59:17,770 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 00:59:17,770 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 00:59:17,770 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 00:59:17,770 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 00:59:17,770 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 00:59:17,771 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 00:59:17,771 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 00:59:17,771 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 00:59:17,771 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 00:59:17,772 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 00:59:17,772 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 00:59:17,772 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 00:59:17,772 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 00:59:17,772 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 00:59:17,772 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 00:59:17,773 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 00:59:17,773 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 00:59:17,816 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 00:59:17,829 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 00:59:17,833 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 00:59:17,835 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 00:59:17,835 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 00:59:17,836 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label07_true-unreach-call_false-termination.c [2018-11-07 00:59:17,912 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa9332c18/a4f1cf13634b47bab9a2d5843bfacdfb/FLAG714fab14e [2018-11-07 00:59:18,537 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 00:59:18,543 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label07_true-unreach-call_false-termination.c [2018-11-07 00:59:18,562 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa9332c18/a4f1cf13634b47bab9a2d5843bfacdfb/FLAG714fab14e [2018-11-07 00:59:18,576 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa9332c18/a4f1cf13634b47bab9a2d5843bfacdfb [2018-11-07 00:59:18,587 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 00:59:18,588 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 00:59:18,589 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 00:59:18,590 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 00:59:18,594 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 00:59:18,595 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:59:18" (1/1) ... [2018-11-07 00:59:18,598 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2228132a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:59:18, skipping insertion in model container [2018-11-07 00:59:18,598 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:59:18" (1/1) ... [2018-11-07 00:59:18,608 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 00:59:18,665 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 00:59:19,125 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 00:59:19,130 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 00:59:19,284 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 00:59:19,304 INFO L193 MainTranslator]: Completed translation [2018-11-07 00:59:19,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:59:19 WrapperNode [2018-11-07 00:59:19,305 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 00:59:19,306 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 00:59:19,306 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 00:59:19,306 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 00:59:19,316 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:59:19" (1/1) ... [2018-11-07 00:59:19,338 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:59:19" (1/1) ... [2018-11-07 00:59:19,445 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 00:59:19,445 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 00:59:19,446 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 00:59:19,446 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 00:59:19,458 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:59:19" (1/1) ... [2018-11-07 00:59:19,459 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:59:19" (1/1) ... [2018-11-07 00:59:19,463 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:59:19" (1/1) ... [2018-11-07 00:59:19,464 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:59:19" (1/1) ... [2018-11-07 00:59:19,506 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:59:19" (1/1) ... [2018-11-07 00:59:19,522 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:59:19" (1/1) ... [2018-11-07 00:59:19,530 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:59:19" (1/1) ... [2018-11-07 00:59:19,539 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 00:59:19,539 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 00:59:19,539 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 00:59:19,540 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 00:59:19,541 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:59:19" (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 00:59:19,623 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 00:59:19,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 00:59:19,624 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 00:59:19,624 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 00:59:19,624 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 00:59:19,624 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 00:59:19,625 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 00:59:19,626 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 00:59:19,626 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 00:59:22,675 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 00:59:22,676 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:59:22 BoogieIcfgContainer [2018-11-07 00:59:22,676 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 00:59:22,677 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 00:59:22,677 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 00:59:22,681 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 00:59:22,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:59:18" (1/3) ... [2018-11-07 00:59:22,682 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78f69b00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:59:22, skipping insertion in model container [2018-11-07 00:59:22,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:59:19" (2/3) ... [2018-11-07 00:59:22,682 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@78f69b00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:59:22, skipping insertion in model container [2018-11-07 00:59:22,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:59:22" (3/3) ... [2018-11-07 00:59:22,684 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem01_label07_true-unreach-call_false-termination.c [2018-11-07 00:59:22,693 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 00:59:22,702 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 00:59:22,718 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 00:59:22,757 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 00:59:22,757 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 00:59:22,757 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 00:59:22,758 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 00:59:22,758 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 00:59:22,758 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 00:59:22,758 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 00:59:22,758 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 00:59:22,789 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states. [2018-11-07 00:59:22,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2018-11-07 00:59:22,806 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:59:22,807 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:59:22,810 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:59:22,815 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:59:22,816 INFO L82 PathProgramCache]: Analyzing trace with hash -175459411, now seen corresponding path program 1 times [2018-11-07 00:59:22,818 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:59:22,866 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:59:22,867 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:59:22,867 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:59:22,867 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:59:23,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:59:23,540 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 00:59:23,542 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:59:23,543 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-07 00:59:23,544 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:59:23,553 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 00:59:23,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 00:59:23,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-07 00:59:23,573 INFO L87 Difference]: Start difference. First operand 208 states. Second operand 3 states. [2018-11-07 00:59:25,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:59:25,082 INFO L93 Difference]: Finished difference Result 550 states and 941 transitions. [2018-11-07 00:59:25,083 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 00:59:25,084 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 111 [2018-11-07 00:59:25,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:59:25,104 INFO L225 Difference]: With dead ends: 550 [2018-11-07 00:59:25,104 INFO L226 Difference]: Without dead ends: 340 [2018-11-07 00:59:25,111 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 00:59:25,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2018-11-07 00:59:25,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 340. [2018-11-07 00:59:25,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 340 states. [2018-11-07 00:59:25,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 340 states to 340 states and 553 transitions. [2018-11-07 00:59:25,193 INFO L78 Accepts]: Start accepts. Automaton has 340 states and 553 transitions. Word has length 111 [2018-11-07 00:59:25,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:59:25,194 INFO L480 AbstractCegarLoop]: Abstraction has 340 states and 553 transitions. [2018-11-07 00:59:25,194 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-07 00:59:25,194 INFO L276 IsEmpty]: Start isEmpty. Operand 340 states and 553 transitions. [2018-11-07 00:59:25,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2018-11-07 00:59:25,206 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:59:25,206 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 00:59:25,207 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:59:25,207 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:59:25,207 INFO L82 PathProgramCache]: Analyzing trace with hash -665844754, now seen corresponding path program 1 times [2018-11-07 00:59:25,207 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:59:25,210 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:59:25,210 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:59:25,210 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:59:25,211 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:59:25,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:59:25,377 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:59:25,377 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:59:25,377 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-07 00:59:25,378 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:59:25,380 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 00:59:25,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 00:59:25,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-07 00:59:25,381 INFO L87 Difference]: Start difference. First operand 340 states and 553 transitions. Second operand 6 states. [2018-11-07 00:59:27,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:59:27,308 INFO L93 Difference]: Finished difference Result 1075 states and 1835 transitions. [2018-11-07 00:59:27,312 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 00:59:27,312 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 122 [2018-11-07 00:59:27,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:59:27,322 INFO L225 Difference]: With dead ends: 1075 [2018-11-07 00:59:27,322 INFO L226 Difference]: Without dead ends: 741 [2018-11-07 00:59:27,327 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-11-07 00:59:27,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2018-11-07 00:59:27,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 724. [2018-11-07 00:59:27,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 724 states. [2018-11-07 00:59:27,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 1145 transitions. [2018-11-07 00:59:27,395 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 1145 transitions. Word has length 122 [2018-11-07 00:59:27,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:59:27,395 INFO L480 AbstractCegarLoop]: Abstraction has 724 states and 1145 transitions. [2018-11-07 00:59:27,395 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 00:59:27,395 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 1145 transitions. [2018-11-07 00:59:27,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2018-11-07 00:59:27,401 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:59:27,401 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2018-11-07 00:59:27,402 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:59:27,402 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:59:27,402 INFO L82 PathProgramCache]: Analyzing trace with hash 1859924383, now seen corresponding path program 1 times [2018-11-07 00:59:27,402 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:59:27,404 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:59:27,404 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:59:27,404 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:59:27,404 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:59:27,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:59:27,922 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 40 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:59:27,923 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 00:59:27,923 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 00:59:27,924 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 148 with the following transitions: [2018-11-07 00:59:27,932 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [6], [10], [14], [17], [18], [22], [26], [30], [34], [38], [42], [46], [50], [54], [58], [62], [65], [66], [70], [74], [78], [82], [86], [90], [94], [98], [102], [106], [110], [114], [118], [122], [126], [130], [134], [138], [142], [146], [150], [154], [158], [162], [166], [170], [174], [178], [182], [186], [190], [194], [198], [202], [206], [210], [214], [218], [222], [226], [230], [234], [238], [242], [246], [250], [254], [258], [262], [266], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [369], [377], [385], [393], [401], [409], [417], [425], [433], [441], [449], [457], [465], [473], [481], [489], [497], [505], [513], [521], [525], [527], [757], [761], [765], [771], [775], [777], [782], [783], [784], [786], [787] [2018-11-07 00:59:28,006 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 00:59:28,006 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 01:00:08,799 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 01:00:08,801 INFO L272 AbstractInterpreter]: Visited 115 different actions 180 times. Merged at 4 different actions 4 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 42 variables. [2018-11-07 01:00:08,812 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 01:00:08,812 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 01:00:19,594 INFO L227 lantSequenceWeakener]: Weakened 22 states. On average, predicates are now at 81.93% of their original sizes. [2018-11-07 01:00:19,595 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 01:02:02,627 INFO L415 sIntCurrentIteration]: We unified 146 AI predicates to 146 [2018-11-07 01:02:02,627 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 01:02:02,628 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 01:02:02,628 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [6] total 20 [2018-11-07 01:02:02,628 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 01:02:02,629 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-11-07 01:02:02,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-11-07 01:02:02,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2018-11-07 01:02:02,630 INFO L87 Difference]: Start difference. First operand 724 states and 1145 transitions. Second operand 16 states. Received shutdown request... [2018-11-07 01:03:44,535 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-11-07 01:03:44,536 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 01:03:44,543 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 01:03:44,543 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 01:03:44 BoogieIcfgContainer [2018-11-07 01:03:44,543 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 01:03:44,544 INFO L168 Benchmark]: Toolchain (without parser) took 265956.46 ms. Allocated memory was 1.5 GB in the beginning and 2.9 GB in the end (delta: 1.3 GB). Free memory was 1.4 GB in the beginning and 1.7 GB in the end (delta: -245.0 MB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-11-07 01:03:44,546 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 01:03:44,547 INFO L168 Benchmark]: CACSL2BoogieTranslator took 715.67 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. [2018-11-07 01:03:44,547 INFO L168 Benchmark]: Boogie Procedure Inliner took 139.38 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 731.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -802.1 MB). Peak memory consumption was 18.9 MB. Max. memory is 7.1 GB. [2018-11-07 01:03:44,549 INFO L168 Benchmark]: Boogie Preprocessor took 93.43 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-11-07 01:03:44,549 INFO L168 Benchmark]: RCFGBuilder took 3136.86 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 120.0 MB). Peak memory consumption was 120.0 MB. Max. memory is 7.1 GB. [2018-11-07 01:03:44,550 INFO L168 Benchmark]: TraceAbstraction took 261866.20 ms. Allocated memory was 2.3 GB in the beginning and 2.9 GB in the end (delta: 595.1 MB). Free memory was 2.1 GB in the beginning and 1.7 GB in the end (delta: 405.4 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. [2018-11-07 01:03:44,555 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 715.67 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 31.7 MB). Peak memory consumption was 31.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 139.38 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 731.9 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -802.1 MB). Peak memory consumption was 18.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 93.43 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 3136.86 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 120.0 MB). Peak memory consumption was 120.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 261866.20 ms. Allocated memory was 2.3 GB in the beginning and 2.9 GB in the end (delta: 595.1 MB). Free memory was 2.1 GB in the beginning and 1.7 GB in the end (delta: 405.4 MB). Peak memory consumption was 1.0 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 488]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 488). Cancelled while BasicCegarLoop was constructing difference of abstraction (724states) and FLOYD_HOARE automaton (currently 21 states, 16 states before enhancement),while ReachableStatesComputation was computing reachable states (197 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 208 locations, 1 error locations. TIMEOUT Result, 261.7s OverallTime, 3 OverallIterations, 3 TraceHistogramMax, 105.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 231 SDtfs, 1116 SDslu, 159 SDs, 0 SdLazy, 1593 SolverSat, 411 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 35.5s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 171 GetRequests, 115 SyntacticMatches, 25 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 114.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=724occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 40.8s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9939382368383372 AbsIntWeakeningRatio, 0.23972602739726026 AbsIntAvgWeakeningVarsNumRemoved, 295.67123287671234 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 2 MinimizatonAttempts, 17 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 380 NumberOfCodeBlocks, 380 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 377 ConstructedInterpolants, 0 QuantifiedInterpolants, 105907 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 48/50 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown