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/Problem11_label57_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 21:16:30,955 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 21:16:30,959 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 21:16:30,977 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 21:16:30,977 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 21:16:30,980 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 21:16:30,981 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 21:16:30,983 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 21:16:30,985 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 21:16:30,986 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 21:16:30,987 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 21:16:30,987 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 21:16:30,988 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 21:16:30,989 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 21:16:30,990 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 21:16:30,991 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 21:16:30,992 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 21:16:30,994 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 21:16:30,996 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 21:16:30,997 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 21:16:30,999 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 21:16:31,000 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 21:16:31,002 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 21:16:31,002 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 21:16:31,003 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 21:16:31,004 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 21:16:31,005 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 21:16:31,006 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 21:16:31,006 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 21:16:31,008 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 21:16:31,008 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 21:16:31,009 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-10-24 21:16:31,011 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 21:16:31,036 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 21:16:31,036 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 21:16:31,040 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 21:16:31,040 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 21:16:31,041 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 21:16:31,041 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 21:16:31,041 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 21:16:31,041 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 21:16:31,042 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 21:16:31,045 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 21:16:31,045 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 21:16:31,045 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 21:16:31,046 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 21:16:31,046 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 21:16:31,047 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 21:16:31,047 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 21:16:31,047 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 21:16:31,047 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 21:16:31,047 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 21:16:31,047 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 21:16:31,048 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 21:16:31,048 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 21:16:31,048 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 21:16:31,048 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 21:16:31,048 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 21:16:31,050 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 21:16:31,050 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 21:16:31,050 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 21:16:31,050 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 21:16:31,051 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 21:16:31,051 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 21:16:31,051 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 21:16:31,051 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 21:16:31,051 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 21:16:31,119 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 21:16:31,139 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 21:16:31,144 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 21:16:31,146 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 21:16:31,146 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 21:16:31,147 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label57_true-unreach-call.c [2018-10-24 21:16:31,216 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/5e5061708/2121c2d93f0d4d7a84f2eba762587a1c/FLAG58dd262d8 [2018-10-24 21:16:31,877 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 21:16:31,880 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label57_true-unreach-call.c [2018-10-24 21:16:31,899 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/5e5061708/2121c2d93f0d4d7a84f2eba762587a1c/FLAG58dd262d8 [2018-10-24 21:16:31,922 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/5e5061708/2121c2d93f0d4d7a84f2eba762587a1c [2018-10-24 21:16:31,938 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 21:16:31,940 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 21:16:31,941 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 21:16:31,941 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 21:16:31,948 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 21:16:31,949 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:16:31" (1/1) ... [2018-10-24 21:16:31,953 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f49102c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:16:31, skipping insertion in model container [2018-10-24 21:16:31,954 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:16:31" (1/1) ... [2018-10-24 21:16:31,966 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 21:16:32,052 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 21:16:32,773 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:16:32,778 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 21:16:33,024 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:16:33,045 INFO L193 MainTranslator]: Completed translation [2018-10-24 21:16:33,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:16:33 WrapperNode [2018-10-24 21:16:33,046 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 21:16:33,047 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 21:16:33,047 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 21:16:33,048 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 21:16:33,058 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:16:33" (1/1) ... [2018-10-24 21:16:33,102 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:16:33" (1/1) ... [2018-10-24 21:16:33,363 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 21:16:33,364 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 21:16:33,364 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 21:16:33,364 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 21:16:33,376 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:16:33" (1/1) ... [2018-10-24 21:16:33,376 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:16:33" (1/1) ... [2018-10-24 21:16:33,388 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:16:33" (1/1) ... [2018-10-24 21:16:33,389 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:16:33" (1/1) ... [2018-10-24 21:16:33,451 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:16:33" (1/1) ... [2018-10-24 21:16:33,482 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:16:33" (1/1) ... [2018-10-24 21:16:33,499 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:16:33" (1/1) ... [2018-10-24 21:16:33,512 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 21:16:33,513 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 21:16:33,513 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 21:16:33,513 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 21:16:33,514 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:16:33" (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 21:16:33,591 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 21:16:33,591 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 21:16:33,591 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 21:16:33,592 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 21:16:33,592 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 21:16:33,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 21:16:33,592 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 21:16:33,592 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 21:16:38,455 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 21:16:38,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:16:38 BoogieIcfgContainer [2018-10-24 21:16:38,456 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 21:16:38,458 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 21:16:38,458 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 21:16:38,462 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 21:16:38,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:16:31" (1/3) ... [2018-10-24 21:16:38,466 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f5ab0ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:16:38, skipping insertion in model container [2018-10-24 21:16:38,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:16:33" (2/3) ... [2018-10-24 21:16:38,466 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f5ab0ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:16:38, skipping insertion in model container [2018-10-24 21:16:38,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:16:38" (3/3) ... [2018-10-24 21:16:38,472 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label57_true-unreach-call.c [2018-10-24 21:16:38,488 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 21:16:38,498 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 21:16:38,517 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 21:16:38,558 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 21:16:38,558 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 21:16:38,558 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 21:16:38,558 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 21:16:38,559 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 21:16:38,559 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 21:16:38,559 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 21:16:38,559 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 21:16:38,590 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-10-24 21:16:38,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2018-10-24 21:16:38,600 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:16:38,602 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] [2018-10-24 21:16:38,604 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:16:38,609 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:16:38,610 INFO L82 PathProgramCache]: Analyzing trace with hash 2140032137, now seen corresponding path program 1 times [2018-10-24 21:16:38,612 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:16:38,669 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:16:38,669 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:16:38,669 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:16:38,670 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:16:38,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:16:39,202 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 21:16:39,205 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:16:39,205 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 21:16:39,206 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:16:39,215 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 21:16:39,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 21:16:39,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:16:39,234 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 4 states. [2018-10-24 21:16:42,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:16:42,722 INFO L93 Difference]: Finished difference Result 998 states and 1780 transitions. [2018-10-24 21:16:42,724 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 21:16:42,725 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2018-10-24 21:16:42,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:16:42,749 INFO L225 Difference]: With dead ends: 998 [2018-10-24 21:16:42,749 INFO L226 Difference]: Without dead ends: 699 [2018-10-24 21:16:42,757 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 21:16:42,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2018-10-24 21:16:42,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 693. [2018-10-24 21:16:42,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 693 states. [2018-10-24 21:16:42,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 1109 transitions. [2018-10-24 21:16:42,860 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 1109 transitions. Word has length 53 [2018-10-24 21:16:42,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:16:42,863 INFO L481 AbstractCegarLoop]: Abstraction has 693 states and 1109 transitions. [2018-10-24 21:16:42,863 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 21:16:42,864 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 1109 transitions. [2018-10-24 21:16:42,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2018-10-24 21:16:42,877 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:16:42,877 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:16:42,878 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:16:42,878 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:16:42,878 INFO L82 PathProgramCache]: Analyzing trace with hash -1132443228, now seen corresponding path program 1 times [2018-10-24 21:16:42,879 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:16:42,881 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:16:42,883 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:16:42,883 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:16:42,883 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:16:42,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:16:43,179 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:16:43,180 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:16:43,180 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 21:16:43,180 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:16:43,182 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 21:16:43,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 21:16:43,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:16:43,183 INFO L87 Difference]: Start difference. First operand 693 states and 1109 transitions. Second operand 4 states. [2018-10-24 21:16:48,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:16:48,179 INFO L93 Difference]: Finished difference Result 2539 states and 4260 transitions. [2018-10-24 21:16:48,182 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 21:16:48,182 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 127 [2018-10-24 21:16:48,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:16:48,198 INFO L225 Difference]: With dead ends: 2539 [2018-10-24 21:16:48,199 INFO L226 Difference]: Without dead ends: 1852 [2018-10-24 21:16:48,206 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:16:48,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1852 states. [2018-10-24 21:16:48,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1852 to 1835. [2018-10-24 21:16:48,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1835 states. [2018-10-24 21:16:48,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1835 states to 1835 states and 2814 transitions. [2018-10-24 21:16:48,282 INFO L78 Accepts]: Start accepts. Automaton has 1835 states and 2814 transitions. Word has length 127 [2018-10-24 21:16:48,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:16:48,283 INFO L481 AbstractCegarLoop]: Abstraction has 1835 states and 2814 transitions. [2018-10-24 21:16:48,283 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 21:16:48,283 INFO L276 IsEmpty]: Start isEmpty. Operand 1835 states and 2814 transitions. [2018-10-24 21:16:48,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2018-10-24 21:16:48,300 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:16:48,301 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2018-10-24 21:16:48,301 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:16:48,301 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:16:48,302 INFO L82 PathProgramCache]: Analyzing trace with hash 182901244, now seen corresponding path program 1 times [2018-10-24 21:16:48,302 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:16:48,303 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:16:48,303 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:16:48,303 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:16:48,303 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:16:48,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:16:48,968 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 92 proven. 94 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 21:16:48,968 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:16:48,968 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:16:48,969 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 277 with the following transitions: [2018-10-24 21:16:48,972 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [325], [327], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [610], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [738], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-24 21:16:49,066 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:16:49,067 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:16:53,337 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 21:16:53,367 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:16:53,369 INFO L272 AbstractInterpreter]: Visited 129 different actions 129 times. Never merged. Never widened. Never found a fixpoint. Largest state had 28 variables. [2018-10-24 21:16:53,393 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:16:53,393 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:16:56,853 INFO L232 lantSequenceWeakener]: Weakened 268 states. On average, predicates are now at 73.57% of their original sizes. [2018-10-24 21:16:56,854 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:16:57,369 INFO L413 sIntCurrentIteration]: We have 275 unified AI predicates [2018-10-24 21:16:57,369 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:16:57,370 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:16:57,371 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 11 [2018-10-24 21:16:57,371 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:16:57,372 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 21:16:57,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 21:16:57,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 21:16:57,372 INFO L87 Difference]: Start difference. First operand 1835 states and 2814 transitions. Second operand 7 states. [2018-10-24 21:17:54,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:17:54,798 INFO L93 Difference]: Finished difference Result 3856 states and 5888 transitions. [2018-10-24 21:17:54,798 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:17:54,798 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 276 [2018-10-24 21:17:54,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:17:54,812 INFO L225 Difference]: With dead ends: 3856 [2018-10-24 21:17:54,812 INFO L226 Difference]: Without dead ends: 2027 [2018-10-24 21:17:54,821 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 276 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-10-24 21:17:54,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2027 states. [2018-10-24 21:17:54,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2027 to 2025. [2018-10-24 21:17:54,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2025 states. [2018-10-24 21:17:54,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2025 states to 2025 states and 3014 transitions. [2018-10-24 21:17:54,885 INFO L78 Accepts]: Start accepts. Automaton has 2025 states and 3014 transitions. Word has length 276 [2018-10-24 21:17:54,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:17:54,886 INFO L481 AbstractCegarLoop]: Abstraction has 2025 states and 3014 transitions. [2018-10-24 21:17:54,886 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 21:17:54,886 INFO L276 IsEmpty]: Start isEmpty. Operand 2025 states and 3014 transitions. [2018-10-24 21:17:54,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2018-10-24 21:17:54,901 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:17:54,902 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 21:17:54,902 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:17:54,903 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:17:54,903 INFO L82 PathProgramCache]: Analyzing trace with hash 1884219290, now seen corresponding path program 1 times [2018-10-24 21:17:54,903 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:17:54,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:17:54,904 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:17:54,904 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:17:54,905 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:17:54,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:17:55,913 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 5 proven. 94 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2018-10-24 21:17:55,913 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:17:55,914 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:17:55,914 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 369 with the following transitions: [2018-10-24 21:17:55,915 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [325], [327], [330], [338], [346], [354], [362], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [751], [762], [766], [777], [781], [785], [789], [793], [797], [808], [812], [816], [820], [824], [828], [832], [843], [847], [851], [862], [866], [869], [870], [874], [878], [889], [893], [897], [901], [905], [909], [913], [924], [928], [932], [936], [940], [944], [948], [952], [956], [959], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-24 21:17:55,924 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:17:55,924 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:18:02,624 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 21:19:38,927 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-10-24 21:19:38,928 INFO L272 AbstractInterpreter]: Visited 176 different actions 1032 times. Merged at 7 different actions 34 times. Widened at 1 different actions 1 times. Found 6 fixpoints after 1 different actions. Largest state had 28 variables. [2018-10-24 21:19:38,948 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:19:38,949 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-10-24 21:19:38,949 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:19:38,949 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 21:19:38,960 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:19:38,960 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 21:19:39,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:19:39,106 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 21:19:39,447 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 10 [2018-10-24 21:19:44,553 WARN L179 SmtUtils]: Spent 2.91 s on a formula simplification. DAG size of input: 46 DAG size of output: 22 [2018-10-24 21:19:49,013 WARN L179 SmtUtils]: Spent 665.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-10-24 21:19:49,972 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 5 proven. 235 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:19:49,973 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-10-24 21:19:50,528 WARN L179 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2018-10-24 21:19:51,129 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 209 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:19:51,152 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-10-24 21:19:51,152 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 23 [2018-10-24 21:19:51,153 INFO L251 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-10-24 21:19:51,154 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-10-24 21:19:51,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-10-24 21:19:51,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=393, Unknown=4, NotChecked=0, Total=506 [2018-10-24 21:19:51,155 INFO L87 Difference]: Start difference. First operand 2025 states and 3014 transitions. Second operand 17 states. [2018-10-24 21:19:51,468 WARN L179 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 28 [2018-10-24 21:20:00,694 WARN L179 SmtUtils]: Spent 1.13 s on a formula simplification that was a NOOP. DAG size: 38 [2018-10-24 21:20:04,165 WARN L179 SmtUtils]: Spent 1.59 s on a formula simplification that was a NOOP. DAG size: 37 [2018-10-24 21:20:20,633 WARN L179 SmtUtils]: Spent 2.02 s on a formula simplification that was a NOOP. DAG size: 36 [2018-10-24 21:20:25,411 WARN L179 SmtUtils]: Spent 904.00 ms on a formula simplification that was a NOOP. DAG size: 35 Received shutdown request... [2018-10-24 21:20:27,441 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-10-24 21:20:27,441 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 21:20:27,446 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 21:20:27,447 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:20:27 BoogieIcfgContainer [2018-10-24 21:20:27,447 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 21:20:27,448 INFO L168 Benchmark]: Toolchain (without parser) took 235509.55 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 1.7 GB in the end (delta: -285.6 MB). Peak memory consumption was 2.4 GB. Max. memory is 7.1 GB. [2018-10-24 21:20:27,449 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 21:20:27,449 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1105.13 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: 52.9 MB). Peak memory consumption was 52.9 MB. Max. memory is 7.1 GB. [2018-10-24 21:20:27,450 INFO L168 Benchmark]: Boogie Procedure Inliner took 316.16 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 746.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -828.1 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. [2018-10-24 21:20:27,451 INFO L168 Benchmark]: Boogie Preprocessor took 149.12 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. [2018-10-24 21:20:27,452 INFO L168 Benchmark]: RCFGBuilder took 4943.50 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 198.8 MB). Peak memory consumption was 198.8 MB. Max. memory is 7.1 GB. [2018-10-24 21:20:27,452 INFO L168 Benchmark]: TraceAbstraction took 228989.21 ms. Allocated memory was 2.3 GB in the beginning and 4.3 GB in the end (delta: 2.0 GB). Free memory was 2.0 GB in the beginning and 1.7 GB in the end (delta: 290.9 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. [2018-10-24 21:20:27,457 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 1105.13 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: 52.9 MB). Peak memory consumption was 52.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 316.16 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 746.6 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -828.1 MB). Peak memory consumption was 24.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 149.12 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 4943.50 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 198.8 MB). Peak memory consumption was 198.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 228989.21 ms. Allocated memory was 2.3 GB in the beginning and 4.3 GB in the end (delta: 2.0 GB). Free memory was 2.0 GB in the beginning and 1.7 GB in the end (delta: 290.9 MB). Peak memory consumption was 2.3 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 144]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 144). Cancelled while BasicCegarLoop was constructing difference of abstraction (2025states) and FLOYD_HOARE automaton (currently 19 states, 17 states before enhancement),while ReachableStatesComputation was computing reachable states (2606 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 293 locations, 1 error locations. TIMEOUT Result, 228.9s OverallTime, 4 OverallIterations, 3 TraceHistogramMax, 102.3s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 712 SDtfs, 5235 SDslu, 894 SDs, 0 SdLazy, 4753 SolverSat, 1886 SolverUnsat, 8 SolverUnknown, 0 SolverNotchecked, 65.8s Time, PredicateUnifierStatistics: 2 DeclaredPredicates, 1052 GetRequests, 1001 SyntacticMatches, 4 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 27.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2025occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 107.4s AbstIntTime, 2 AbstIntIterations, 1 AbstIntStrong, 0.9965993265993269 AbsIntWeakeningRatio, 0.10181818181818182 AbsIntAvgWeakeningVarsNumRemoved, 1225.1927272727273 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 3 MinimizatonAttempts, 25 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 13.9s InterpolantComputationTime, 1192 NumberOfCodeBlocks, 1192 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 1554 ConstructedInterpolants, 25 QuantifiedInterpolants, 3494923 SizeOfPredicates, 11 NumberOfNonLiveVariables, 573 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 503/957 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown