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-EXP.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label15_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-df4b876 [2018-11-07 09:25:55,925 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-07 09:25:55,927 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-07 09:25:55,941 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-07 09:25:55,942 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-07 09:25:55,943 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-07 09:25:55,944 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-07 09:25:55,946 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-07 09:25:55,947 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-07 09:25:55,948 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-07 09:25:55,949 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-07 09:25:55,949 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-07 09:25:55,950 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-07 09:25:55,953 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-07 09:25:55,954 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-07 09:25:55,955 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-07 09:25:55,958 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-07 09:25:55,960 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-07 09:25:55,965 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-07 09:25:55,969 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-07 09:25:55,970 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-07 09:25:55,971 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-07 09:25:55,978 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-07 09:25:55,979 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-07 09:25:55,979 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-07 09:25:55,981 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-07 09:25:55,982 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-07 09:25:55,986 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-07 09:25:55,987 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-07 09:25:55,990 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-07 09:25:55,990 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-07 09:25:55,991 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... 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[2018-11-07 09:25:55,993 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default-EXP.epf [2018-11-07 09:25:56,020 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-07 09:25:56,021 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-07 09:25:56,021 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-07 09:25:56,024 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-07 09:25:56,024 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-07 09:25:56,025 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-07 09:25:56,025 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-07 09:25:56,025 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-07 09:25:56,025 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-07 09:25:56,025 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-07 09:25:56,026 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-07 09:25:56,026 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-07 09:25:56,026 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-07 09:25:56,026 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-07 09:25:56,027 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-07 09:25:56,027 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-07 09:25:56,027 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-07 09:25:56,028 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-07 09:25:56,028 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-07 09:25:56,028 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-07 09:25:56,028 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-07 09:25:56,028 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-07 09:25:56,029 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-07 09:25:56,029 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-07 09:25:56,029 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-07 09:25:56,029 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-07 09:25:56,029 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-07 09:25:56,030 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-07 09:25:56,030 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-07 09:25:56,030 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-07 09:25:56,030 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-07 09:25:56,030 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-07 09:25:56,030 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-07 09:25:56,031 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-07 09:25:56,031 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-07 09:25:56,031 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-11-07 09:25:56,076 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-07 09:25:56,093 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-07 09:25:56,097 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-07 09:25:56,099 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-07 09:25:56,100 INFO L276 PluginConnector]: CDTParser initialized [2018-11-07 09:25:56,100 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label15_true-unreach-call.c [2018-11-07 09:25:56,160 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4d21822d/ca12bfb705624860a2886a6f6fb40f01/FLAG8f43602de [2018-11-07 09:25:56,942 INFO L298 CDTParser]: Found 1 translation units. [2018-11-07 09:25:56,943 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label15_true-unreach-call.c [2018-11-07 09:25:56,969 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4d21822d/ca12bfb705624860a2886a6f6fb40f01/FLAG8f43602de [2018-11-07 09:25:56,984 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e4d21822d/ca12bfb705624860a2886a6f6fb40f01 [2018-11-07 09:25:56,995 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-07 09:25:56,997 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-11-07 09:25:56,998 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-07 09:25:56,998 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-07 09:25:57,002 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-07 09:25:57,003 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:25:56" (1/1) ... [2018-11-07 09:25:57,006 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@301511e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:25:57, skipping insertion in model container [2018-11-07 09:25:57,007 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 09:25:56" (1/1) ... [2018-11-07 09:25:57,018 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-07 09:25:57,141 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-07 09:25:58,068 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 09:25:58,073 INFO L189 MainTranslator]: Completed pre-run [2018-11-07 09:25:58,462 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-07 09:25:58,511 INFO L193 MainTranslator]: Completed translation [2018-11-07 09:25:58,512 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:25:58 WrapperNode [2018-11-07 09:25:58,512 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-07 09:25:58,514 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-07 09:25:58,514 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-07 09:25:58,514 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-07 09:25:58,525 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:25:58" (1/1) ... [2018-11-07 09:25:58,793 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:25:58" (1/1) ... [2018-11-07 09:25:58,802 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-07 09:25:58,803 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-07 09:25:58,803 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-07 09:25:58,803 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-07 09:25:58,814 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:25:58" (1/1) ... [2018-11-07 09:25:58,815 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:25:58" (1/1) ... [2018-11-07 09:25:58,832 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:25:58" (1/1) ... [2018-11-07 09:25:58,833 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:25:58" (1/1) ... [2018-11-07 09:25:58,937 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:25:58" (1/1) ... [2018-11-07 09:25:58,973 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:25:58" (1/1) ... [2018-11-07 09:25:59,004 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:25:58" (1/1) ... [2018-11-07 09:25:59,026 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-07 09:25:59,026 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-07 09:25:59,027 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-07 09:25:59,027 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-07 09:25:59,028 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:25:58" (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 09:25:59,096 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2018-11-07 09:25:59,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-07 09:25:59,096 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-07 09:25:59,097 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2018-11-07 09:25:59,098 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2018-11-07 09:25:59,098 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-11-07 09:25:59,098 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-11-07 09:25:59,098 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-07 09:25:59,098 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-07 09:25:59,099 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-07 09:25:59,099 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-07 09:26:07,575 INFO L276 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-07 09:26:07,576 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:26:07 BoogieIcfgContainer [2018-11-07 09:26:07,576 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-07 09:26:07,578 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-07 09:26:07,578 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-07 09:26:07,581 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-07 09:26:07,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 09:25:56" (1/3) ... [2018-11-07 09:26:07,582 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22dffb59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:26:07, skipping insertion in model container [2018-11-07 09:26:07,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 09:25:58" (2/3) ... [2018-11-07 09:26:07,583 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22dffb59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 09:26:07, skipping insertion in model container [2018-11-07 09:26:07,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 09:26:07" (3/3) ... [2018-11-07 09:26:07,585 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem17_label15_true-unreach-call.c [2018-11-07 09:26:07,595 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-07 09:26:07,605 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-07 09:26:07,623 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-07 09:26:07,667 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-07 09:26:07,667 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-07 09:26:07,667 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-07 09:26:07,668 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-07 09:26:07,668 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-07 09:26:07,668 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-07 09:26:07,668 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-07 09:26:07,669 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-07 09:26:07,709 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states. [2018-11-07 09:26:07,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2018-11-07 09:26:07,721 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:26:07,723 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] [2018-11-07 09:26:07,728 INFO L423 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:26:07,735 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:26:07,735 INFO L82 PathProgramCache]: Analyzing trace with hash 2012982790, now seen corresponding path program 1 times [2018-11-07 09:26:07,738 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:26:07,796 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:26:07,797 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:26:07,797 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:26:07,797 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:26:07,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:26:08,222 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 09:26:08,224 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:26:08,225 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-07 09:26:08,225 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:26:08,231 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-07 09:26:08,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-07 09:26:08,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-07 09:26:08,250 INFO L87 Difference]: Start difference. First operand 604 states. Second operand 4 states. [2018-11-07 09:26:18,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:26:18,908 INFO L93 Difference]: Finished difference Result 2164 states and 4009 transitions. [2018-11-07 09:26:18,910 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-07 09:26:18,911 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2018-11-07 09:26:18,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:26:18,954 INFO L225 Difference]: With dead ends: 2164 [2018-11-07 09:26:18,954 INFO L226 Difference]: Without dead ends: 1554 [2018-11-07 09:26:18,967 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 09:26:18,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1554 states. [2018-11-07 09:26:19,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1554 to 1051. [2018-11-07 09:26:19,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1051 states. [2018-11-07 09:26:19,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1051 states to 1051 states and 1880 transitions. [2018-11-07 09:26:19,138 INFO L78 Accepts]: Start accepts. Automaton has 1051 states and 1880 transitions. Word has length 43 [2018-11-07 09:26:19,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:26:19,140 INFO L480 AbstractCegarLoop]: Abstraction has 1051 states and 1880 transitions. [2018-11-07 09:26:19,140 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-07 09:26:19,141 INFO L276 IsEmpty]: Start isEmpty. Operand 1051 states and 1880 transitions. [2018-11-07 09:26:19,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2018-11-07 09:26:19,149 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:26:19,152 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:26:19,153 INFO L423 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:26:19,153 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:26:19,153 INFO L82 PathProgramCache]: Analyzing trace with hash 1160890231, now seen corresponding path program 1 times [2018-11-07 09:26:19,153 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:26:19,156 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:26:19,156 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:26:19,156 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:26:19,156 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:26:19,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:26:19,585 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:26:19,586 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-07 09:26:19,586 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-07 09:26:19,586 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:26:19,588 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-07 09:26:19,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-07 09:26:19,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-07 09:26:19,589 INFO L87 Difference]: Start difference. First operand 1051 states and 1880 transitions. Second operand 5 states. [2018-11-07 09:26:26,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:26:26,579 INFO L93 Difference]: Finished difference Result 3028 states and 5532 transitions. [2018-11-07 09:26:26,582 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-07 09:26:26,582 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 115 [2018-11-07 09:26:26,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:26:26,603 INFO L225 Difference]: With dead ends: 3028 [2018-11-07 09:26:26,603 INFO L226 Difference]: Without dead ends: 1983 [2018-11-07 09:26:26,608 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-11-07 09:26:26,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1983 states. [2018-11-07 09:26:26,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1983 to 1957. [2018-11-07 09:26:26,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1957 states. [2018-11-07 09:26:26,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1957 states to 1957 states and 3236 transitions. [2018-11-07 09:26:26,679 INFO L78 Accepts]: Start accepts. Automaton has 1957 states and 3236 transitions. Word has length 115 [2018-11-07 09:26:26,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:26:26,680 INFO L480 AbstractCegarLoop]: Abstraction has 1957 states and 3236 transitions. [2018-11-07 09:26:26,680 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-07 09:26:26,680 INFO L276 IsEmpty]: Start isEmpty. Operand 1957 states and 3236 transitions. [2018-11-07 09:26:26,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-11-07 09:26:26,685 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:26:26,686 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:26:26,686 INFO L423 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:26:26,686 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:26:26,686 INFO L82 PathProgramCache]: Analyzing trace with hash -2146986351, now seen corresponding path program 1 times [2018-11-07 09:26:26,687 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:26:26,687 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:26:26,688 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:26:26,688 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:26:26,688 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:26:26,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:26:26,978 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:26:26,978 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:26:26,978 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:26:26,979 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 119 with the following transitions: [2018-11-07 09:26:26,982 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], [954], [956], [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 09:26:27,027 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:26:27,028 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:26:28,045 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:26:28,047 INFO L272 AbstractInterpreter]: Visited 83 different actions 235 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-07 09:26:28,081 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:26:28,082 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:26:28,083 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:26:28,083 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 09:26:28,102 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:26:28,102 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:26:28,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:26:28,193 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:26:32,118 WARN L179 SmtUtils]: Spent 3.34 s on a formula simplification that was a NOOP. DAG size: 42 [2018-11-07 09:26:32,309 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 4 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:26:32,309 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:26:33,197 WARN L179 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 25 [2018-11-07 09:26:33,602 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:26:33,634 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-11-07 09:26:33,634 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 13 [2018-11-07 09:26:33,635 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:26:33,635 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-07 09:26:33,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-07 09:26:33,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2018-11-07 09:26:33,636 INFO L87 Difference]: Start difference. First operand 1957 states and 3236 transitions. Second operand 6 states. [2018-11-07 09:30:21,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-07 09:30:21,279 INFO L93 Difference]: Finished difference Result 7532 states and 12952 transitions. [2018-11-07 09:30:21,280 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-07 09:30:21,280 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 118 [2018-11-07 09:30:21,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-07 09:30:21,325 INFO L225 Difference]: With dead ends: 7532 [2018-11-07 09:30:21,325 INFO L226 Difference]: Without dead ends: 5581 [2018-11-07 09:30:21,343 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 231 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2018-11-07 09:30:21,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5581 states. [2018-11-07 09:30:21,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5581 to 5573. [2018-11-07 09:30:21,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5573 states. [2018-11-07 09:30:21,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5573 states to 5573 states and 8834 transitions. [2018-11-07 09:30:21,552 INFO L78 Accepts]: Start accepts. Automaton has 5573 states and 8834 transitions. Word has length 118 [2018-11-07 09:30:21,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-07 09:30:21,553 INFO L480 AbstractCegarLoop]: Abstraction has 5573 states and 8834 transitions. [2018-11-07 09:30:21,553 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-07 09:30:21,553 INFO L276 IsEmpty]: Start isEmpty. Operand 5573 states and 8834 transitions. [2018-11-07 09:30:21,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-11-07 09:30:21,557 INFO L367 BasicCegarLoop]: Found error trace [2018-11-07 09:30:21,559 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:30:21,559 INFO L423 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-07 09:30:21,559 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:30:21,560 INFO L82 PathProgramCache]: Analyzing trace with hash -785829609, now seen corresponding path program 1 times [2018-11-07 09:30:21,560 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-07 09:30:21,561 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:30:21,561 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:30:21,561 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-07 09:30:21,561 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-07 09:30:21,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:30:21,837 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 11 DAG size of output: 4 [2018-11-07 09:30:21,916 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 30 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:30:21,916 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:30:21,916 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-07 09:30:21,916 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 132 with the following transitions: [2018-11-07 09:30:21,917 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], [954], [956], [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], [1224], [1228], [1232], [1236], [1240], [1244], [1255], [1259], [1263], [1267], [1271], [1275], [1279], [1282], [2279], [2283], [2287], [2293], [2297], [2299], [2306], [2307], [2308], [2310], [2311] [2018-11-07 09:30:21,922 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-07 09:30:21,923 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-07 09:30:22,227 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-07 09:30:22,229 INFO L272 AbstractInterpreter]: Visited 96 different actions 185 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 26 variables. [2018-11-07 09:30:22,266 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-07 09:30:22,266 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-07 09:30:22,266 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-07 09:30:22,267 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-07 09:30:22,288 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-07 09:30:22,289 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-07 09:30:22,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-07 09:30:22,359 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-07 09:30:22,529 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:30:22,529 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-07 09:30:22,727 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-07 09:30:22,757 INFO L312 seRefinementStrategy]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2018-11-07 09:30:22,757 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [7] total 8 [2018-11-07 09:30:22,757 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-07 09:30:22,758 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-07 09:30:22,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-07 09:30:22,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-07 09:30:22,759 INFO L87 Difference]: Start difference. First operand 5573 states and 8834 transitions. Second operand 3 states. Received shutdown request... [2018-11-07 09:30:23,862 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-07 09:30:23,862 WARN L549 AbstractCegarLoop]: Verification canceled [2018-11-07 09:30:23,869 WARN L205 ceAbstractionStarter]: Timeout [2018-11-07 09:30:23,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 09:30:23 BoogieIcfgContainer [2018-11-07 09:30:23,869 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-07 09:30:23,870 INFO L168 Benchmark]: Toolchain (without parser) took 266874.08 ms. Allocated memory was 1.5 GB in the beginning and 2.7 GB in the end (delta: 1.1 GB). Free memory was 1.4 GB in the beginning and 1.7 GB in the end (delta: -248.9 MB). Peak memory consumption was 890.3 MB. Max. memory is 7.1 GB. [2018-11-07 09:30:23,871 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 09:30:23,872 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1514.16 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 09:30:23,873 INFO L168 Benchmark]: Boogie Procedure Inliner took 288.73 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 788.5 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -979.6 MB). Peak memory consumption was 42.4 MB. Max. memory is 7.1 GB. [2018-11-07 09:30:23,874 INFO L168 Benchmark]: Boogie Preprocessor took 223.27 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: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. [2018-11-07 09:30:23,875 INFO L168 Benchmark]: RCFGBuilder took 8550.20 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: 464.0 MB). Peak memory consumption was 464.0 MB. Max. memory is 7.1 GB. [2018-11-07 09:30:23,876 INFO L168 Benchmark]: TraceAbstraction took 256291.64 ms. Allocated memory was 2.3 GB in the beginning and 2.7 GB in the end (delta: 350.7 MB). Free memory was 1.8 GB in the beginning and 1.7 GB in the end (delta: 123.5 MB). Peak memory consumption was 474.3 MB. Max. memory is 7.1 GB. [2018-11-07 09:30:23,881 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 1514.16 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 288.73 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 788.5 MB). Free memory was 1.3 GB in the beginning and 2.3 GB in the end (delta: -979.6 MB). Peak memory consumption was 42.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 223.27 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: 13.6 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 8550.20 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: 464.0 MB). Peak memory consumption was 464.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 256291.64 ms. Allocated memory was 2.3 GB in the beginning and 2.7 GB in the end (delta: 350.7 MB). Free memory was 1.8 GB in the beginning and 1.7 GB in the end (delta: 123.5 MB). Peak memory consumption was 474.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 116]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 116). Cancelled while BasicCegarLoop was constructing difference of abstraction (5573states) and FLOYD_HOARE automaton (currently 3 states, 3 states before enhancement),while ReachableStatesComputation was computing reachable states (3078 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 604 locations, 1 error locations. TIMEOUT Result, 256.2s OverallTime, 4 OverallIterations, 2 TraceHistogramMax, 246.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1094 SDtfs, 5404 SDslu, 837 SDs, 0 SdLazy, 8584 SolverSat, 2939 SolverUnsat, 98 SolverUnknown, 0 SolverNotchecked, 241.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 530 GetRequests, 498 SyntacticMatches, 7 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 5.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5573occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 1.4s AbstIntTime, 2 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 3 MinimizatonAttempts, 537 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 6.9s InterpolantComputationTime, 656 NumberOfCodeBlocks, 656 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 897 ConstructedInterpolants, 80 QuantifiedInterpolants, 619949 SizeOfPredicates, 5 NumberOfNonLiveVariables, 553 ConjunctsInSsa, 13 ConjunctsInUnsatCore, 8 InterpolantComputations, 5 PerfectInterpolantSequences, 178/252 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown