java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-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_label18_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 22:08:08,918 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 22:08:08,920 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 22:08:08,932 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 22:08:08,933 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 22:08:08,934 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 22:08:08,935 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 22:08:08,937 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 22:08:08,939 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 22:08:08,939 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 22:08:08,940 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 22:08:08,941 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 22:08:08,941 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 22:08:08,942 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 22:08:08,944 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 22:08:08,944 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 22:08:08,945 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 22:08:08,947 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 22:08:08,949 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 22:08:08,951 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 22:08:08,952 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 22:08:08,953 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 22:08:08,955 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2018-10-24 22:08:08,966 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 22:08:08,997 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 22:08:08,997 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 22:08:09,001 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 22:08:09,002 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 22:08:09,002 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 22:08:09,002 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 22:08:09,002 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 22:08:09,002 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 22:08:09,003 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 22:08:09,003 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 22:08:09,003 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 22:08:09,003 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 22:08:09,004 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 22:08:09,004 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 22:08:09,005 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 22:08:09,005 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 22:08:09,005 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 22:08:09,005 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 22:08:09,005 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 22:08:09,006 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 22:08:09,006 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 22:08:09,006 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 22:08:09,006 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 22:08:09,006 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 22:08:09,006 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 22:08:09,007 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 22:08:09,007 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 22:08:09,007 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 22:08:09,007 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 22:08:09,007 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 22:08:09,009 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 22:08:09,009 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 22:08:09,009 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 22:08:09,009 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 22:08:09,062 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 22:08:09,081 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 22:08:09,085 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 22:08:09,087 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 22:08:09,088 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 22:08:09,088 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label18_true-unreach-call.c [2018-10-24 22:08:09,154 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b150f1f58/979655179ffd4a78884386b8ccf490a4/FLAGf08644d9b [2018-10-24 22:08:09,818 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 22:08:09,819 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label18_true-unreach-call.c [2018-10-24 22:08:09,853 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b150f1f58/979655179ffd4a78884386b8ccf490a4/FLAGf08644d9b [2018-10-24 22:08:09,875 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b150f1f58/979655179ffd4a78884386b8ccf490a4 [2018-10-24 22:08:09,888 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 22:08:09,891 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 22:08:09,892 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 22:08:09,893 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 22:08:09,897 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 22:08:09,898 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:08:09" (1/1) ... [2018-10-24 22:08:09,901 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c4a8908 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:08:09, skipping insertion in model container [2018-10-24 22:08:09,902 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:08:09" (1/1) ... [2018-10-24 22:08:09,913 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 22:08:10,035 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 22:08:11,027 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 22:08:11,032 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 22:08:11,448 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 22:08:11,470 INFO L193 MainTranslator]: Completed translation [2018-10-24 22:08:11,471 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:08:11 WrapperNode [2018-10-24 22:08:11,471 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 22:08:11,472 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 22:08:11,472 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 22:08:11,472 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 22:08:11,483 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:08:11" (1/1) ... [2018-10-24 22:08:11,555 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:08:11" (1/1) ... [2018-10-24 22:08:11,971 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 22:08:11,971 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 22:08:11,971 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 22:08:11,972 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 22:08:11,983 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:08:11" (1/1) ... [2018-10-24 22:08:11,984 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:08:11" (1/1) ... [2018-10-24 22:08:12,016 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:08:11" (1/1) ... [2018-10-24 22:08:12,017 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:08:11" (1/1) ... [2018-10-24 22:08:12,141 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:08:11" (1/1) ... [2018-10-24 22:08:12,181 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:08:11" (1/1) ... [2018-10-24 22:08:12,243 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:08:11" (1/1) ... [2018-10-24 22:08:12,303 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 22:08:12,303 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 22:08:12,304 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 22:08:12,304 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 22:08:12,305 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:08:11" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-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 [2018-10-24 22:08:12,379 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 22:08:12,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 22:08:12,380 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-10-24 22:08:12,380 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-10-24 22:08:12,380 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 22:08:12,381 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 22:08:12,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 22:08:12,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 22:08:12,381 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 22:08:12,381 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 22:08:27,621 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 22:08:27,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:08:27 BoogieIcfgContainer [2018-10-24 22:08:27,622 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 22:08:27,623 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 22:08:27,624 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 22:08:27,627 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 22:08:27,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:08:09" (1/3) ... [2018-10-24 22:08:27,629 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@364effd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:08:27, skipping insertion in model container [2018-10-24 22:08:27,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:08:11" (2/3) ... [2018-10-24 22:08:27,629 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@364effd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:08:27, skipping insertion in model container [2018-10-24 22:08:27,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:08:27" (3/3) ... [2018-10-24 22:08:27,631 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label18_true-unreach-call.c [2018-10-24 22:08:27,642 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 22:08:27,652 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 22:08:27,671 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 22:08:27,715 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 22:08:27,715 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 22:08:27,716 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 22:08:27,716 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 22:08:27,716 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 22:08:27,716 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 22:08:27,716 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 22:08:27,717 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 22:08:27,754 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-10-24 22:08:27,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-10-24 22:08:27,775 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:08:27,777 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] [2018-10-24 22:08:27,780 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:08:27,787 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:08:27,787 INFO L82 PathProgramCache]: Analyzing trace with hash -2094085436, now seen corresponding path program 1 times [2018-10-24 22:08:27,789 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:08:27,848 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:08:27,848 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:08:27,849 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:08:27,849 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:08:27,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:08:28,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:08:28,421 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:08:28,421 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 22:08:28,422 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:08:28,428 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 22:08:28,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 22:08:28,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 22:08:28,450 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-10-24 22:08:50,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:08:50,465 INFO L93 Difference]: Finished difference Result 2142 states and 3971 transitions. [2018-10-24 22:08:50,465 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 22:08:50,467 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2018-10-24 22:08:50,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:08:50,500 INFO L225 Difference]: With dead ends: 2142 [2018-10-24 22:08:50,500 INFO L226 Difference]: Without dead ends: 1532 [2018-10-24 22:08:50,513 INFO L605 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 [2018-10-24 22:08:50,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1532 states. [2018-10-24 22:08:50,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1532 to 1519. [2018-10-24 22:08:50,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1519 states. [2018-10-24 22:08:50,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1519 states to 1519 states and 2456 transitions. [2018-10-24 22:08:50,669 INFO L78 Accepts]: Start accepts. Automaton has 1519 states and 2456 transitions. Word has length 62 [2018-10-24 22:08:50,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:08:50,670 INFO L481 AbstractCegarLoop]: Abstraction has 1519 states and 2456 transitions. [2018-10-24 22:08:50,670 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 22:08:50,670 INFO L276 IsEmpty]: Start isEmpty. Operand 1519 states and 2456 transitions. [2018-10-24 22:08:50,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2018-10-24 22:08:50,686 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:08:50,687 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:08:50,687 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:08:50,688 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:08:50,688 INFO L82 PathProgramCache]: Analyzing trace with hash -858039278, now seen corresponding path program 1 times [2018-10-24 22:08:50,688 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:08:50,690 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:08:50,691 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:08:50,691 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:08:50,691 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:08:50,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:08:51,029 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:08:51,029 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 22:08:51,029 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-10-24 22:08:51,030 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:08:51,032 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-10-24 22:08:51,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-10-24 22:08:51,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-10-24 22:08:51,033 INFO L87 Difference]: Start difference. First operand 1519 states and 2456 transitions. Second operand 5 states. [2018-10-24 22:08:59,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 22:08:59,977 INFO L93 Difference]: Finished difference Result 4424 states and 7338 transitions. [2018-10-24 22:08:59,978 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 22:08:59,978 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 134 [2018-10-24 22:08:59,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 22:09:00,006 INFO L225 Difference]: With dead ends: 4424 [2018-10-24 22:09:00,007 INFO L226 Difference]: Without dead ends: 2911 [2018-10-24 22:09:00,016 INFO L605 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 [2018-10-24 22:09:00,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2911 states. [2018-10-24 22:09:00,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2911 to 2875. [2018-10-24 22:09:00,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2875 states. [2018-10-24 22:09:00,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2875 states to 2875 states and 4373 transitions. [2018-10-24 22:09:00,149 INFO L78 Accepts]: Start accepts. Automaton has 2875 states and 4373 transitions. Word has length 134 [2018-10-24 22:09:00,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 22:09:00,150 INFO L481 AbstractCegarLoop]: Abstraction has 2875 states and 4373 transitions. [2018-10-24 22:09:00,150 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-10-24 22:09:00,150 INFO L276 IsEmpty]: Start isEmpty. Operand 2875 states and 4373 transitions. [2018-10-24 22:09:00,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2018-10-24 22:09:00,161 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 22:09:00,161 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 22:09:00,162 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 22:09:00,162 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:09:00,162 INFO L82 PathProgramCache]: Analyzing trace with hash -1330082406, now seen corresponding path program 1 times [2018-10-24 22:09:00,162 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 22:09:00,167 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:09:00,167 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 22:09:00,168 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 22:09:00,168 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 22:09:00,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 22:09:00,534 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 22:09:00,535 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 22:09:00,535 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 22:09:00,536 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 138 with the following transitions: [2018-10-24 22:09:00,538 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], [1106], [1108], [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] [2018-10-24 22:09:00,623 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 22:09:00,624 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 22:09:02,004 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 22:09:20,356 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 22:09:20,357 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. [2018-10-24 22:09:20,368 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 22:09:20,368 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 22:09:22,955 INFO L232 lantSequenceWeakener]: Weakened 7 states. On average, predicates are now at 82.14% of their original sizes. [2018-10-24 22:09:22,955 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 22:10:31,828 INFO L413 sIntCurrentIteration]: We have 136 unified AI predicates [2018-10-24 22:10:31,829 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 22:10:31,829 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 22:10:31,830 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [22] imperfect sequences [7] total 27 [2018-10-24 22:10:31,830 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 22:10:31,833 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-10-24 22:10:31,833 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-10-24 22:10:31,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=371, Unknown=0, NotChecked=0, Total=462 [2018-10-24 22:10:31,834 INFO L87 Difference]: Start difference. First operand 2875 states and 4373 transitions. Second operand 22 states. Received shutdown request... [2018-10-24 22:12:14,029 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-24 22:12:14,030 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 22:12:14,036 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 22:12:14,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:12:14 BoogieIcfgContainer [2018-10-24 22:12:14,037 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 22:12:14,038 INFO L168 Benchmark]: Toolchain (without parser) took 244148.95 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 3.1 GB in the end (delta: -1.6 GB). Peak memory consumption was 1.1 GB. Max. memory is 7.1 GB. [2018-10-24 22:12:14,040 INFO L168 Benchmark]: CDTParser took 0.21 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. [2018-10-24 22:12:14,040 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1579.21 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. [2018-10-24 22:12:14,041 INFO L168 Benchmark]: Boogie Procedure Inliner took 498.96 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 789.1 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -939.4 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. [2018-10-24 22:12:14,042 INFO L168 Benchmark]: Boogie Preprocessor took 331.61 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: 27.8 MB). Peak memory consumption was 27.8 MB. Max. memory is 7.1 GB. [2018-10-24 22:12:14,043 INFO L168 Benchmark]: RCFGBuilder took 15318.96 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 476.6 MB). Peak memory consumption was 476.6 MB. Max. memory is 7.1 GB. [2018-10-24 22:12:14,044 INFO L168 Benchmark]: TraceAbstraction took 226413.59 ms. Allocated memory was 2.3 GB in the beginning and 4.3 GB in the end (delta: 1.9 GB). Free memory was 1.7 GB in the beginning and 3.1 GB in the end (delta: -1.3 GB). Peak memory consumption was 587.6 MB. Max. memory is 7.1 GB. [2018-10-24 22:12:14,049 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 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 1579.21 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 498.96 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 789.1 MB). Free memory was 1.3 GB in the beginning and 2.2 GB in the end (delta: -939.4 MB). Peak memory consumption was 56.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 331.61 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: 27.8 MB). Peak memory consumption was 27.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 15318.96 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 1.7 GB in the end (delta: 476.6 MB). Peak memory consumption was 476.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 226413.59 ms. Allocated memory was 2.3 GB in the beginning and 4.3 GB in the end (delta: 1.9 GB). Free memory was 1.7 GB in the beginning and 3.1 GB in the end (delta: -1.3 GB). Peak memory consumption was 587.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 173]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 173). Cancelled while BasicCegarLoop was constructing difference of abstraction (2875states) and FLOYD_HOARE automaton (currently 18 states, 22 states before enhancement),while ReachableStatesComputation was computing reachable states (412 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 226.3s OverallTime, 3 OverallIterations, 2 TraceHistogramMax, 133.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 751 SDtfs, 3970 SDslu, 555 SDs, 0 SdLazy, 5961 SolverSat, 1588 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 64.8s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 164 GetRequests, 79 SyntacticMatches, 44 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 575 ImplicationChecksByTransitivity, 76.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2875occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 19.8s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9934502262443438 AbsIntWeakeningRatio, 0.15441176470588236 AbsIntAvgWeakeningVarsNumRemoved, 627.0808823529412 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 2 MinimizatonAttempts, 49 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 333 NumberOfCodeBlocks, 333 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 330 ConstructedInterpolants, 0 QuantifiedInterpolants, 134340 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 55/110 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown