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/Problem17_label55_false-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 00:44:17,717 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 00:44:17,719 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 00:44:17,737 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 00:44:17,737 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 00:44:17,738 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 00:44:17,740 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 00:44:17,741 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 00:44:17,743 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 00:44:17,744 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 00:44:17,745 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 00:44:17,745 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 00:44:17,746 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 00:44:17,747 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 00:44:17,748 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 00:44:17,749 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 00:44:17,750 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 00:44:17,752 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 00:44:17,754 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 00:44:17,755 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 00:44:17,756 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 00:44:17,757 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 00:44:17,760 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-11-07 00:44:17,769 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 00:44:17,798 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 00:44:17,799 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 00:44:17,800 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 00:44:17,800 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 00:44:17,800 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 00:44:17,800 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 00:44:17,800 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 00:44:17,801 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 00:44:17,801 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 00:44:17,801 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 00:44:17,801 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 00:44:17,801 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 00:44:17,802 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 00:44:17,802 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 00:44:17,802 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 00:44:17,803 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 00:44:17,803 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 00:44:17,803 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 00:44:17,803 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 00:44:17,803 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 00:44:17,804 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 00:44:17,804 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 00:44:17,804 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 00:44:17,804 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 00:44:17,804 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 00:44:17,805 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 00:44:17,805 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 00:44:17,805 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 00:44:17,805 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 00:44:17,805 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 00:44:17,806 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 00:44:17,806 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 00:44:17,806 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 00:44:17,806 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 00:44:17,863 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 00:44:17,880 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 00:44:17,885 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 00:44:17,886 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 00:44:17,887 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 00:44:17,888 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label55_false-unreach-call.c [2018-11-07 00:44:17,959 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a00cc695c/5f9f7eefd5f843ed96ab6be3398a8c6f/FLAGf1a16e71d [2018-11-07 00:44:18,697 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 00:44:18,698 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label55_false-unreach-call.c [2018-11-07 00:44:18,726 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a00cc695c/5f9f7eefd5f843ed96ab6be3398a8c6f/FLAGf1a16e71d [2018-11-07 00:44:18,743 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a00cc695c/5f9f7eefd5f843ed96ab6be3398a8c6f [2018-11-07 00:44:18,755 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 00:44:18,757 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 00:44:18,758 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 00:44:18,758 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 00:44:18,762 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 00:44:18,764 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:44:18" (1/1) ... [2018-11-07 00:44:18,767 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7293a3c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:44:18, skipping insertion in model container [2018-11-07 00:44:18,767 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:44:18" (1/1) ... [2018-11-07 00:44:18,778 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 00:44:18,903 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 00:44:20,028 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 00:44:20,034 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 00:44:20,469 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 00:44:20,492 INFO L193 MainTranslator]: Completed translation [2018-11-07 00:44:20,492 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:44:20 WrapperNode [2018-11-07 00:44:20,493 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 00:44:20,494 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 00:44:20,494 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 00:44:20,494 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 00:44:20,504 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:44:20" (1/1) ... [2018-11-07 00:44:20,762 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:44:20" (1/1) ... [2018-11-07 00:44:20,780 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 00:44:20,783 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 00:44:20,783 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 00:44:20,784 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 00:44:20,795 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:44:20" (1/1) ... [2018-11-07 00:44:20,796 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:44:20" (1/1) ... [2018-11-07 00:44:20,823 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:44:20" (1/1) ... [2018-11-07 00:44:20,824 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:44:20" (1/1) ... [2018-11-07 00:44:20,914 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:44:20" (1/1) ... [2018-11-07 00:44:20,949 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:44:20" (1/1) ... [2018-11-07 00:44:20,968 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:44:20" (1/1) ... [2018-11-07 00:44:20,990 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 00:44:20,991 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 00:44:20,991 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 00:44:20,991 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 00:44:20,992 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:44:20" (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 00:44:21,052 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 00:44:21,053 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 00:44:21,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 00:44:21,053 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 00:44:21,053 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 00:44:21,053 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 00:44:21,054 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 00:44:21,054 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 00:44:21,054 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 00:44:21,054 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 00:44:21,054 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 00:44:29,821 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 00:44:29,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:44:29 BoogieIcfgContainer [2018-11-07 00:44:29,823 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 00:44:29,825 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 00:44:29,825 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 00:44:29,828 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 00:44:29,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:44:18" (1/3) ... [2018-11-07 00:44:29,830 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@262e0c9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:44:29, skipping insertion in model container [2018-11-07 00:44:29,830 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:44:20" (2/3) ... [2018-11-07 00:44:29,831 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@262e0c9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:44:29, skipping insertion in model container [2018-11-07 00:44:29,831 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:44:29" (3/3) ... [2018-11-07 00:44:29,833 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label55_false-unreach-call.c [2018-11-07 00:44:29,844 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 00:44:29,855 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 00:44:29,874 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 00:44:29,917 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 00:44:29,918 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 00:44:29,918 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 00:44:29,918 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 00:44:29,918 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 00:44:29,918 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 00:44:29,919 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 00:44:29,919 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 00:44:29,962 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-11-07 00:44:29,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2018-11-07 00:44:29,968 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:44:29,969 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-07 00:44:29,971 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:44:29,977 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:44:29,977 INFO L82 PathProgramCache]: Analyzing trace with hash -2057459564, now seen corresponding path program 1 times [2018-11-07 00:44:29,980 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:44:30,033 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:44:30,034 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:44:30,034 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:44:30,034 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:44:30,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:44:30,416 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 00:44:30,422 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:44:30,422 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 00:44:30,422 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:44:30,429 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 00:44:30,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 00:44:30,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 00:44:30,449 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-11-07 00:44:39,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:44:39,706 INFO L93 Difference]: Finished difference Result 2164 states and 4009 transitions. [2018-11-07 00:44:39,706 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 00:44:39,708 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2018-11-07 00:44:39,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:44:39,751 INFO L225 Difference]: With dead ends: 2164 [2018-11-07 00:44:39,751 INFO L226 Difference]: Without dead ends: 1554 [2018-11-07 00:44:39,764 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 00:44:39,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1554 states. [2018-11-07 00:44:39,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1554 to 1052. [2018-11-07 00:44:39,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1052 states. [2018-11-07 00:44:39,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1052 states to 1052 states and 1882 transitions. [2018-11-07 00:44:39,904 INFO L78 Accepts]: Start accepts. Automaton has 1052 states and 1882 transitions. Word has length 18 [2018-11-07 00:44:39,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:44:39,904 INFO L480 AbstractCegarLoop]: Abstraction has 1052 states and 1882 transitions. [2018-11-07 00:44:39,905 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 00:44:39,905 INFO L276 IsEmpty]: Start isEmpty. Operand 1052 states and 1882 transitions. [2018-11-07 00:44:39,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2018-11-07 00:44:39,910 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:44:39,911 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 00:44:39,911 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:44:39,911 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:44:39,911 INFO L82 PathProgramCache]: Analyzing trace with hash -1959202398, now seen corresponding path program 1 times [2018-11-07 00:44:39,912 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:44:39,913 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:44:39,913 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:44:39,913 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:44:39,914 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:44:39,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:44:40,207 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:44:40,208 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 00:44:40,208 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 00:44:40,208 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:44:40,210 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 00:44:40,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 00:44:40,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 00:44:40,211 INFO L87 Difference]: Start difference. First operand 1052 states and 1882 transitions. Second operand 5 states. [2018-11-07 00:44:47,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 00:44:47,506 INFO L93 Difference]: Finished difference Result 3031 states and 5537 transitions. [2018-11-07 00:44:47,507 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 00:44:47,507 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 90 [2018-11-07 00:44:47,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 00:44:47,526 INFO L225 Difference]: With dead ends: 3031 [2018-11-07 00:44:47,527 INFO L226 Difference]: Without dead ends: 1985 [2018-11-07 00:44:47,532 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 00:44:47,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1985 states. [2018-11-07 00:44:47,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1985 to 1959. [2018-11-07 00:44:47,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1959 states. [2018-11-07 00:44:47,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1959 states to 1959 states and 3239 transitions. [2018-11-07 00:44:47,632 INFO L78 Accepts]: Start accepts. Automaton has 1959 states and 3239 transitions. Word has length 90 [2018-11-07 00:44:47,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 00:44:47,632 INFO L480 AbstractCegarLoop]: Abstraction has 1959 states and 3239 transitions. [2018-11-07 00:44:47,633 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 00:44:47,633 INFO L276 IsEmpty]: Start isEmpty. Operand 1959 states and 3239 transitions. [2018-11-07 00:44:47,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2018-11-07 00:44:47,636 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 00:44:47,636 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-07 00:44:47,636 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 00:44:47,637 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:44:47,637 INFO L82 PathProgramCache]: Analyzing trace with hash 1042899370, now seen corresponding path program 1 times [2018-11-07 00:44:47,637 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 00:44:47,638 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:44:47,638 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 00:44:47,639 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 00:44:47,639 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 00:44:47,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 00:44:47,890 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 00:44:47,890 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 00:44:47,891 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 00:44:47,892 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 94 with the following transitions: [2018-11-07 00:44:47,894 INFO L202 CegarAbsIntRunner]: [0], [1], [711], [718], [726], [734], [742], [750], [754], [756], [759], [767], [775], [783], [791], [799], [807], [815], [823], [831], [839], [847], [855], [863], [871], [879], [887], [895], [903], [911], [919], [927], [935], [943], [951], [959], [967], [975], [983], [991], [999], [1007], [1015], [1023], [1031], [1039], [1047], [1055], [1063], [1071], [1079], [1087], [1095], [1103], [1111], [1119], [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 00:44:47,973 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-11-07 00:44:47,973 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 00:44:49,324 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-11-07 00:45:09,779 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-07 00:45:09,781 INFO L272 AbstractInterpreter]: Visited 82 different actions 538 times. Merged at 5 different actions 30 times. Widened at 1 different actions 2 times. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-07 00:45:09,794 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 00:45:09,794 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-07 00:45:11,700 INFO L227 lantSequenceWeakener]: Weakened 21 states. On average, predicates are now at 77.78% of their original sizes. [2018-11-07 00:45:11,701 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-07 00:45:54,042 INFO L415 sIntCurrentIteration]: We unified 92 AI predicates to 92 [2018-11-07 00:45:54,043 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-07 00:45:54,044 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-07 00:45:54,044 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [27] imperfect sequences [7] total 32 [2018-11-07 00:45:54,044 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 00:45:54,045 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2018-11-07 00:45:54,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2018-11-07 00:45:54,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=566, Unknown=0, NotChecked=0, Total=702 [2018-11-07 00:45:54,046 INFO L87 Difference]: Start difference. First operand 1959 states and 3239 transitions. Second operand 27 states. Received shutdown request... [2018-11-07 00:48:27,896 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-11-07 00:48:27,897 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 00:48:27,903 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 00:48:27,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 12:48:27 BoogieIcfgContainer [2018-11-07 00:48:27,904 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 00:48:27,904 INFO L168 Benchmark]: Toolchain (without parser) took 249148.76 ms. Allocated memory was 1.5 GB in the beginning and 4.3 GB in the end (delta: 2.7 GB). Free memory was 1.4 GB in the beginning and 2.7 GB in the end (delta: -1.3 GB). Peak memory consumption was 1.4 GB. Max. memory is 7.1 GB. [2018-11-07 00:48:27,906 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 00:48:27,907 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1735.13 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: 129.5 MB). Peak memory consumption was 129.5 MB. Max. memory is 7.1 GB. [2018-11-07 00:48:27,908 INFO L168 Benchmark]: Boogie Procedure Inliner took 289.11 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 787.0 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -958.9 MB). Peak memory consumption was 42.5 MB. Max. memory is 7.1 GB. [2018-11-07 00:48:27,909 INFO L168 Benchmark]: Boogie Preprocessor took 206.96 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2018-11-07 00:48:27,910 INFO L168 Benchmark]: RCFGBuilder took 8832.65 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: 473.4 MB). Peak memory consumption was 473.4 MB. Max. memory is 7.1 GB. [2018-11-07 00:48:27,911 INFO L168 Benchmark]: TraceAbstraction took 238079.20 ms. Allocated memory was 2.3 GB in the beginning and 4.3 GB in the end (delta: 1.9 GB). Free memory was 1.8 GB in the beginning and 2.7 GB in the end (delta: -939.2 MB). Peak memory consumption was 990.2 MB. Max. memory is 7.1 GB. [2018-11-07 00:48:27,917 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 1735.13 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: 129.5 MB). Peak memory consumption was 129.5 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 289.11 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 787.0 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -958.9 MB). Peak memory consumption was 42.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 206.96 ms. Allocated memory is still 2.3 GB. Free memory was 2.3 GB in the beginning and 2.2 GB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8832.65 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: 473.4 MB). Peak memory consumption was 473.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 238079.20 ms. Allocated memory was 2.3 GB in the beginning and 4.3 GB in the end (delta: 1.9 GB). Free memory was 1.8 GB in the beginning and 2.7 GB in the end (delta: -939.2 MB). Peak memory consumption was 990.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 41]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 41). Cancelled while BasicCegarLoop was constructing difference of abstraction (1959states) and FLOYD_HOARE automaton (currently 21 states, 27 states before enhancement),while ReachableStatesComputation was computing reachable states (593 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 237.9s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 170.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 529 SDtfs, 4660 SDslu, 485 SDs, 0 SdLazy, 5504 SolverSat, 1776 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 55.9s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 119 GetRequests, 55 SyntacticMatches, 19 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 55.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1959occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 21.9s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9903177257525084 AbsIntWeakeningRatio, 0.22826086956521738 AbsIntAvgWeakeningVarsNumRemoved, 540.3695652173913 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 2 MinimizatonAttempts, 528 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 201 NumberOfCodeBlocks, 201 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 198 ConstructedInterpolants, 0 QuantifiedInterpolants, 57926 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 11/22 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown