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/Problem14_label14_false-unreach-call_false-termination.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 18:29:02,883 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 18:29:02,886 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 18:29:02,906 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 18:29:02,906 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 18:29:02,908 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 18:29:02,912 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 18:29:02,914 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 18:29:02,917 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 18:29:02,918 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 18:29:02,927 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 18:29:02,927 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 18:29:02,931 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 18:29:02,932 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 18:29:02,934 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 18:29:02,934 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 18:29:02,935 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 18:29:02,940 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 18:29:02,946 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 18:29:02,948 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 18:29:02,949 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 18:29:02,953 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 18:29:02,956 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 18:29:02,956 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 18:29:02,956 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 18:29:02,958 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 18:29:02,958 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 18:29:02,959 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 18:29:02,960 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 18:29:02,961 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 18:29:02,962 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 18:29:02,964 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 18:29:02,964 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 18:29:02,964 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 18:29:02,966 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 18:29:02,967 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 18:29:02,967 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 18:29:02,995 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 18:29:02,996 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 18:29:02,996 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 18:29:02,997 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 18:29:02,998 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 18:29:02,998 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 18:29:02,998 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 18:29:02,998 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 18:29:02,998 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 18:29:02,999 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 18:29:02,999 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 18:29:02,999 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 18:29:03,000 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 18:29:03,000 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 18:29:03,001 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 18:29:03,001 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 18:29:03,001 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 18:29:03,001 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 18:29:03,001 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 18:29:03,002 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 18:29:03,003 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 18:29:03,003 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 18:29:03,004 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 18:29:03,004 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 18:29:03,004 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 18:29:03,004 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 18:29:03,004 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 18:29:03,005 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 18:29:03,005 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 18:29:03,005 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 18:29:03,005 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 18:29:03,005 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 18:29:03,006 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 18:29:03,006 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 18:29:03,068 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 18:29:03,085 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 18:29:03,089 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 18:29:03,091 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 18:29:03,091 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 18:29:03,092 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label14_false-unreach-call_false-termination.c [2018-10-24 18:29:03,161 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b9314a1a7/6bd3f6c7d9e341549e48fedc5a7d81d9/FLAG99321b599 [2018-10-24 18:29:03,761 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 18:29:03,762 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label14_false-unreach-call_false-termination.c [2018-10-24 18:29:03,784 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b9314a1a7/6bd3f6c7d9e341549e48fedc5a7d81d9/FLAG99321b599 [2018-10-24 18:29:03,801 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/b9314a1a7/6bd3f6c7d9e341549e48fedc5a7d81d9 [2018-10-24 18:29:03,813 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 18:29:03,816 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 18:29:03,817 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 18:29:03,818 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 18:29:03,822 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 18:29:03,823 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:29:03" (1/1) ... [2018-10-24 18:29:03,826 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20bf5984 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:29:03, skipping insertion in model container [2018-10-24 18:29:03,826 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 06:29:03" (1/1) ... [2018-10-24 18:29:03,837 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 18:29:03,897 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 18:29:04,402 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 18:29:04,410 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 18:29:04,624 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 18:29:04,647 INFO L193 MainTranslator]: Completed translation [2018-10-24 18:29:04,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:29:04 WrapperNode [2018-10-24 18:29:04,647 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 18:29:04,648 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 18:29:04,649 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 18:29:04,649 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 18:29:04,659 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:29:04" (1/1) ... [2018-10-24 18:29:04,681 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:29:04" (1/1) ... [2018-10-24 18:29:04,781 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 18:29:04,781 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 18:29:04,781 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 18:29:04,781 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 18:29:04,922 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:29:04" (1/1) ... [2018-10-24 18:29:04,922 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:29:04" (1/1) ... [2018-10-24 18:29:04,932 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:29:04" (1/1) ... [2018-10-24 18:29:04,933 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:29:04" (1/1) ... [2018-10-24 18:29:04,964 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:29:04" (1/1) ... [2018-10-24 18:29:04,982 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:29:04" (1/1) ... [2018-10-24 18:29:04,996 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:29:04" (1/1) ... [2018-10-24 18:29:05,013 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 18:29:05,014 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 18:29:05,015 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 18:29:05,015 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 18:29:05,016 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:29:04" (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 18:29:05,106 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 18:29:05,106 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 18:29:05,106 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 18:29:05,106 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 18:29:05,107 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 18:29:05,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 18:29:05,107 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 18:29:05,107 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 18:29:08,881 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 18:29:08,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:29:08 BoogieIcfgContainer [2018-10-24 18:29:08,883 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 18:29:08,886 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 18:29:08,886 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 18:29:08,890 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 18:29:08,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 06:29:03" (1/3) ... [2018-10-24 18:29:08,892 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f939b3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:29:08, skipping insertion in model container [2018-10-24 18:29:08,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 06:29:04" (2/3) ... [2018-10-24 18:29:08,893 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f939b3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 06:29:08, skipping insertion in model container [2018-10-24 18:29:08,893 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 06:29:08" (3/3) ... [2018-10-24 18:29:08,895 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem14_label14_false-unreach-call_false-termination.c [2018-10-24 18:29:08,906 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 18:29:08,919 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 18:29:08,939 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 18:29:08,979 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 18:29:08,980 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 18:29:08,980 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 18:29:08,980 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 18:29:08,980 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 18:29:08,981 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 18:29:08,981 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 18:29:08,981 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 18:29:09,007 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states. [2018-10-24 18:29:09,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2018-10-24 18:29:09,016 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:29:09,017 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] [2018-10-24 18:29:09,019 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:29:09,025 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:29:09,026 INFO L82 PathProgramCache]: Analyzing trace with hash 707504249, now seen corresponding path program 1 times [2018-10-24 18:29:09,028 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:29:09,077 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:29:09,078 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:29:09,078 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:29:09,078 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:29:09,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:29:09,405 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 18:29:09,408 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:29:09,408 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 18:29:09,409 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:29:09,414 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 18:29:09,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 18:29:09,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 18:29:09,433 INFO L87 Difference]: Start difference. First operand 255 states. Second operand 4 states. [2018-10-24 18:29:12,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:29:12,532 INFO L93 Difference]: Finished difference Result 894 states and 1611 transitions. [2018-10-24 18:29:12,533 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 18:29:12,535 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2018-10-24 18:29:12,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:29:12,559 INFO L225 Difference]: With dead ends: 894 [2018-10-24 18:29:12,559 INFO L226 Difference]: Without dead ends: 633 [2018-10-24 18:29:12,570 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 18:29:12,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2018-10-24 18:29:12,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 633. [2018-10-24 18:29:12,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 633 states. [2018-10-24 18:29:12,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 1007 transitions. [2018-10-24 18:29:12,673 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 1007 transitions. Word has length 33 [2018-10-24 18:29:12,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:29:12,674 INFO L481 AbstractCegarLoop]: Abstraction has 633 states and 1007 transitions. [2018-10-24 18:29:12,674 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 18:29:12,674 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 1007 transitions. [2018-10-24 18:29:12,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-10-24 18:29:12,688 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:29:12,689 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:29:12,689 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:29:12,689 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:29:12,689 INFO L82 PathProgramCache]: Analyzing trace with hash -1856067133, now seen corresponding path program 1 times [2018-10-24 18:29:12,689 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:29:12,693 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:29:12,694 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:29:12,694 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:29:12,694 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:29:12,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:29:13,068 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 18:29:13,069 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 18:29:13,069 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 18:29:13,069 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:29:13,071 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 18:29:13,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 18:29:13,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 18:29:13,072 INFO L87 Difference]: Start difference. First operand 633 states and 1007 transitions. Second operand 4 states. [2018-10-24 18:29:16,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:29:16,808 INFO L93 Difference]: Finished difference Result 2358 states and 3924 transitions. [2018-10-24 18:29:16,808 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 18:29:16,808 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 146 [2018-10-24 18:29:16,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:29:16,823 INFO L225 Difference]: With dead ends: 2358 [2018-10-24 18:29:16,823 INFO L226 Difference]: Without dead ends: 1731 [2018-10-24 18:29:16,830 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 18:29:16,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1731 states. [2018-10-24 18:29:16,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1731 to 1731. [2018-10-24 18:29:16,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1731 states. [2018-10-24 18:29:16,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1731 states to 1731 states and 2619 transitions. [2018-10-24 18:29:16,928 INFO L78 Accepts]: Start accepts. Automaton has 1731 states and 2619 transitions. Word has length 146 [2018-10-24 18:29:16,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:29:16,929 INFO L481 AbstractCegarLoop]: Abstraction has 1731 states and 2619 transitions. [2018-10-24 18:29:16,929 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 18:29:16,930 INFO L276 IsEmpty]: Start isEmpty. Operand 1731 states and 2619 transitions. [2018-10-24 18:29:16,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2018-10-24 18:29:16,947 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:29:16,947 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:29:16,948 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:29:16,948 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:29:16,948 INFO L82 PathProgramCache]: Analyzing trace with hash 1192336806, now seen corresponding path program 1 times [2018-10-24 18:29:16,948 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:29:16,949 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:29:16,949 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:29:16,950 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:29:16,950 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:29:16,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:29:17,592 WARN L179 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 17 DAG size of output: 10 [2018-10-24 18:29:18,028 WARN L179 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 14 [2018-10-24 18:29:18,207 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 52 proven. 69 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 18:29:18,207 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:29:18,207 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 18:29:18,209 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 221 with the following transitions: [2018-10-24 18:29:18,211 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], [165], [167], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [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], [510], [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], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-24 18:29:18,285 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 18:29:18,285 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 18:29:20,187 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 18:29:24,884 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 18:29:24,886 INFO L272 AbstractInterpreter]: Visited 118 different actions 118 times. Never merged. Never widened. Never found a fixpoint. Largest state had 24 variables. [2018-10-24 18:29:24,922 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:29:24,923 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 18:29:27,789 INFO L232 lantSequenceWeakener]: Weakened 212 states. On average, predicates are now at 77.69% of their original sizes. [2018-10-24 18:29:27,790 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 18:29:28,255 INFO L413 sIntCurrentIteration]: We have 219 unified AI predicates [2018-10-24 18:29:28,255 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 18:29:28,256 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 18:29:28,257 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2018-10-24 18:29:28,258 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:29:28,259 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 18:29:28,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 18:29:28,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 18:29:28,260 INFO L87 Difference]: Start difference. First operand 1731 states and 2619 transitions. Second operand 7 states. [2018-10-24 18:29:58,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:29:58,358 INFO L93 Difference]: Finished difference Result 3641 states and 5473 transitions. [2018-10-24 18:29:58,358 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 18:29:58,359 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 220 [2018-10-24 18:29:58,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:29:58,370 INFO L225 Difference]: With dead ends: 3641 [2018-10-24 18:29:58,371 INFO L226 Difference]: Without dead ends: 1916 [2018-10-24 18:29:58,377 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 220 GetRequests, 214 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 18:29:58,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1916 states. [2018-10-24 18:29:58,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1916 to 1914. [2018-10-24 18:29:58,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1914 states. [2018-10-24 18:29:58,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1914 states to 1914 states and 2810 transitions. [2018-10-24 18:29:58,438 INFO L78 Accepts]: Start accepts. Automaton has 1914 states and 2810 transitions. Word has length 220 [2018-10-24 18:29:58,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:29:58,439 INFO L481 AbstractCegarLoop]: Abstraction has 1914 states and 2810 transitions. [2018-10-24 18:29:58,441 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 18:29:58,441 INFO L276 IsEmpty]: Start isEmpty. Operand 1914 states and 2810 transitions. [2018-10-24 18:29:58,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2018-10-24 18:29:58,448 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:29:58,449 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 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] [2018-10-24 18:29:58,449 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:29:58,450 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:29:58,450 INFO L82 PathProgramCache]: Analyzing trace with hash 1747869460, now seen corresponding path program 1 times [2018-10-24 18:29:58,450 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:29:58,452 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:29:58,452 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:29:58,452 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:29:58,452 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:29:58,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:29:59,444 INFO L134 CoverageAnalysis]: Checked inductivity of 311 backedges. 166 proven. 140 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 18:29:59,444 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:29:59,444 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 18:29:59,445 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 306 with the following transitions: [2018-10-24 18:29:59,445 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], [165], [167], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [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], [510], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [554], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-24 18:29:59,452 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 18:29:59,452 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 18:30:01,080 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 18:30:10,739 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 18:30:10,740 INFO L272 AbstractInterpreter]: Visited 122 different actions 238 times. Merged at 5 different actions 5 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 24 variables. [2018-10-24 18:30:10,746 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:30:10,746 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 18:30:12,887 INFO L232 lantSequenceWeakener]: Weakened 131 states. On average, predicates are now at 78.25% of their original sizes. [2018-10-24 18:30:12,887 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 18:30:29,882 INFO L413 sIntCurrentIteration]: We have 304 unified AI predicates [2018-10-24 18:30:29,883 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 18:30:29,883 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 18:30:29,883 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [23] imperfect sequences [12] total 33 [2018-10-24 18:30:29,883 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 18:30:29,884 INFO L460 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-10-24 18:30:29,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-10-24 18:30:29,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=403, Unknown=0, NotChecked=0, Total=506 [2018-10-24 18:30:29,885 INFO L87 Difference]: Start difference. First operand 1914 states and 2810 transitions. Second operand 23 states. [2018-10-24 18:32:49,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 18:32:49,765 INFO L93 Difference]: Finished difference Result 4766 states and 6894 transitions. [2018-10-24 18:32:49,765 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-10-24 18:32:49,765 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 305 [2018-10-24 18:32:49,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 18:32:49,783 INFO L225 Difference]: With dead ends: 4766 [2018-10-24 18:32:49,783 INFO L226 Difference]: Without dead ends: 3041 [2018-10-24 18:32:49,790 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 313 GetRequests, 263 SyntacticMatches, 20 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 18.2s TimeCoverageRelationStatistics Valid=182, Invalid=810, Unknown=0, NotChecked=0, Total=992 [2018-10-24 18:32:49,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3041 states. [2018-10-24 18:32:49,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3041 to 2646. [2018-10-24 18:32:49,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2646 states. [2018-10-24 18:32:49,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2646 states to 2646 states and 3593 transitions. [2018-10-24 18:32:49,927 INFO L78 Accepts]: Start accepts. Automaton has 2646 states and 3593 transitions. Word has length 305 [2018-10-24 18:32:49,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 18:32:49,928 INFO L481 AbstractCegarLoop]: Abstraction has 2646 states and 3593 transitions. [2018-10-24 18:32:49,928 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-10-24 18:32:49,928 INFO L276 IsEmpty]: Start isEmpty. Operand 2646 states and 3593 transitions. [2018-10-24 18:32:49,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2018-10-24 18:32:49,937 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 18:32:49,937 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 18:32:49,938 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 18:32:49,938 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 18:32:49,938 INFO L82 PathProgramCache]: Analyzing trace with hash 930742976, now seen corresponding path program 1 times [2018-10-24 18:32:49,938 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 18:32:49,939 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:32:49,939 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:32:49,940 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 18:32:49,940 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 18:32:49,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:32:50,456 WARN L179 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-24 18:32:50,650 WARN L179 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2018-10-24 18:32:50,873 WARN L179 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-10-24 18:32:51,241 WARN L179 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-10-24 18:32:51,618 WARN L179 SmtUtils]: Spent 251.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2018-10-24 18:32:52,179 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 91 proven. 241 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-10-24 18:32:52,179 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:32:52,180 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 18:32:52,180 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 332 with the following transitions: [2018-10-24 18:32:52,180 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], [165], [167], [170], [178], [186], [194], [202], [210], [218], [226], [234], [242], [250], [258], [266], [274], [282], [290], [298], [306], [314], [322], [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], [510], [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], [619], [623], [627], [631], [635], [639], [643], [647], [651], [655], [658], [659], [663], [666], [948], [952], [956], [962], [966], [968], [973], [974], [975], [977], [978] [2018-10-24 18:32:52,185 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 18:32:52,185 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 18:32:53,605 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. Received shutdown request... [2018-10-24 18:32:55,599 WARN L572 FixpointEngine]: Received timeout, aborting fixpoint engine [2018-10-24 18:32:55,600 WARN L158 AbstractInterpreter]: Abstract interpretation run out of time [2018-10-24 18:32:55,601 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-10-24 18:32:55,601 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 18:32:55,601 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 18:32:55,610 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 18:32:55,610 INFO L288 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-10-24 18:32:55,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 18:32:55,745 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-10-24 18:32:55,765 INFO L177 TraceCheckSpWp]: Timeout while computing interpolants [2018-10-24 18:32:55,966 WARN L522 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-10-24 18:32:55,966 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 18:32:55,971 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 18:32:55,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 06:32:55 BoogieIcfgContainer [2018-10-24 18:32:55,972 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 18:32:55,973 INFO L168 Benchmark]: Toolchain (without parser) took 232158.11 ms. Allocated memory was 1.5 GB in the beginning and 4.1 GB in the end (delta: 2.6 GB). Free memory was 1.4 GB in the beginning and 3.5 GB in the end (delta: -2.1 GB). Peak memory consumption was 517.5 MB. Max. memory is 7.1 GB. [2018-10-24 18:32:55,974 INFO L168 Benchmark]: CDTParser took 0.20 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 18:32:55,974 INFO L168 Benchmark]: CACSL2BoogieTranslator took 831.44 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. [2018-10-24 18:32:55,975 INFO L168 Benchmark]: Boogie Procedure Inliner took 132.34 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: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2018-10-24 18:32:55,978 INFO L168 Benchmark]: Boogie Preprocessor took 232.37 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 775.4 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -870.9 MB). Peak memory consumption was 27.6 MB. Max. memory is 7.1 GB. [2018-10-24 18:32:55,979 INFO L168 Benchmark]: RCFGBuilder took 3868.95 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 133.1 MB). Peak memory consumption was 133.1 MB. Max. memory is 7.1 GB. [2018-10-24 18:32:55,980 INFO L168 Benchmark]: TraceAbstraction took 227085.56 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 2.1 GB in the beginning and 3.5 GB in the end (delta: -1.4 GB). Peak memory consumption was 427.0 MB. Max. memory is 7.1 GB. [2018-10-24 18:32:55,986 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 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 831.44 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: 42.3 MB). Peak memory consumption was 42.3 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 132.34 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: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 232.37 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 775.4 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -870.9 MB). Peak memory consumption was 27.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 3868.95 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.1 GB in the end (delta: 133.1 MB). Peak memory consumption was 133.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 227085.56 ms. Allocated memory was 2.3 GB in the beginning and 4.1 GB in the end (delta: 1.8 GB). Free memory was 2.1 GB in the beginning and 3.5 GB in the end (delta: -1.4 GB). Peak memory consumption was 427.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 82]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 82). Cancelled while BasicCegarLoop was analyzing trace of length 332 with TraceHistMax 4,while TraceCheckSpWp was constructing forward predicates,while XnfDer was eliminating 1 quantified variables from 2 xjuncts. - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 255 locations, 1 error locations. TIMEOUT Result, 227.0s OverallTime, 5 OverallIterations, 4 TraceHistogramMax, 176.9s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 715 SDtfs, 3441 SDslu, 878 SDs, 0 SdLazy, 5468 SolverSat, 889 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 78.8s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 544 GetRequests, 484 SyntacticMatches, 20 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 18.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2646occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 21.4s AbstIntTime, 3 AbstIntIterations, 2 AbstIntStrong, 0.9953272646659462 AbsIntWeakeningRatio, 0.11089866156787763 AbsIntAvgWeakeningVarsNumRemoved, 790.0019120458891 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 4 MinimizatonAttempts, 397 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 704 NumberOfCodeBlocks, 704 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 700 ConstructedInterpolants, 0 QuantifiedInterpolants, 1920170 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 254/463 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown