java -Xmx8000000000 -jar /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label24_true-unreach-call.c -------------------------------------------------------------------------------- This is Ultimate 0.1.23-d380424 [2018-10-24 21:09:49,929 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-24 21:09:49,931 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-24 21:09:49,947 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-24 21:09:49,948 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-24 21:09:49,949 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-24 21:09:49,952 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-24 21:09:49,956 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-24 21:09:49,961 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-24 21:09:49,962 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-24 21:09:49,964 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-24 21:09:49,964 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-24 21:09:49,966 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-24 21:09:49,969 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-24 21:09:49,972 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-24 21:09:49,974 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-24 21:09:49,974 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-24 21:09:49,981 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-24 21:09:49,987 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-24 21:09:49,988 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-24 21:09:49,990 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-24 21:09:49,991 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-24 21:09:49,993 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-24 21:09:49,993 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-24 21:09:49,993 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-24 21:09:49,994 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-24 21:09:49,995 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-24 21:09:49,996 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-24 21:09:49,997 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-24 21:09:49,998 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-24 21:09:49,998 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-24 21:09:49,999 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-24 21:09:49,999 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-24 21:09:49,999 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-24 21:09:50,000 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-24 21:09:50,001 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-24 21:09:50,001 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-64bit-Taipan_Default.epf [2018-10-24 21:09:50,017 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-24 21:09:50,018 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-24 21:09:50,018 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-10-24 21:09:50,019 INFO L133 SettingsManager]: * User list type=DISABLED [2018-10-24 21:09:50,019 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-10-24 21:09:50,019 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-10-24 21:09:50,019 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-10-24 21:09:50,019 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-10-24 21:09:50,020 INFO L133 SettingsManager]: * Log string format=TERM [2018-10-24 21:09:50,020 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-10-24 21:09:50,020 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-10-24 21:09:50,020 INFO L133 SettingsManager]: * Interval Domain=false [2018-10-24 21:09:50,021 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-24 21:09:50,021 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-24 21:09:50,021 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-24 21:09:50,021 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-10-24 21:09:50,022 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-10-24 21:09:50,022 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-10-24 21:09:50,022 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-24 21:09:50,022 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-10-24 21:09:50,022 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-24 21:09:50,023 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-24 21:09:50,023 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-10-24 21:09:50,023 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-10-24 21:09:50,023 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 21:09:50,023 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-24 21:09:50,024 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-10-24 21:09:50,024 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-10-24 21:09:50,024 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-10-24 21:09:50,024 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-10-24 21:09:50,024 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-10-24 21:09:50,025 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-10-24 21:09:50,025 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-10-24 21:09:50,025 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2018-10-24 21:09:50,068 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-24 21:09:50,081 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-24 21:09:50,085 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-24 21:09:50,087 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-24 21:09:50,087 INFO L276 PluginConnector]: CDTParser initialized [2018-10-24 21:09:50,088 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label24_true-unreach-call.c [2018-10-24 21:09:50,152 INFO L218 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ac15bdf57/da4b85a310d64c0abbf09082598ce8f0/FLAG690075761 [2018-10-24 21:09:50,841 INFO L298 CDTParser]: Found 1 translation units. [2018-10-24 21:09:50,842 INFO L158 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem11_label24_true-unreach-call.c [2018-10-24 21:09:50,863 INFO L346 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ac15bdf57/da4b85a310d64c0abbf09082598ce8f0/FLAG690075761 [2018-10-24 21:09:50,882 INFO L354 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/data/ac15bdf57/da4b85a310d64c0abbf09082598ce8f0 [2018-10-24 21:09:50,893 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-24 21:09:50,894 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2018-10-24 21:09:50,895 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-24 21:09:50,895 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-24 21:09:50,899 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-24 21:09:50,900 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:09:50" (1/1) ... [2018-10-24 21:09:50,903 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1652d08d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:09:50, skipping insertion in model container [2018-10-24 21:09:50,903 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 09:09:50" (1/1) ... [2018-10-24 21:09:50,913 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-24 21:09:50,984 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-24 21:09:51,576 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:09:51,582 INFO L189 MainTranslator]: Completed pre-run [2018-10-24 21:09:51,784 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-24 21:09:51,805 INFO L193 MainTranslator]: Completed translation [2018-10-24 21:09:51,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:09:51 WrapperNode [2018-10-24 21:09:51,806 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-24 21:09:51,807 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-24 21:09:51,807 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-24 21:09:51,807 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-24 21:09:51,818 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:09:51" (1/1) ... [2018-10-24 21:09:51,862 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:09:51" (1/1) ... [2018-10-24 21:09:52,122 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-24 21:09:52,124 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-24 21:09:52,124 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-24 21:09:52,124 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-24 21:09:52,135 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:09:51" (1/1) ... [2018-10-24 21:09:52,135 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:09:51" (1/1) ... [2018-10-24 21:09:52,147 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:09:51" (1/1) ... [2018-10-24 21:09:52,148 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:09:51" (1/1) ... [2018-10-24 21:09:52,206 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:09:51" (1/1) ... [2018-10-24 21:09:52,232 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:09:51" (1/1) ... [2018-10-24 21:09:52,251 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:09:51" (1/1) ... [2018-10-24 21:09:52,270 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-24 21:09:52,270 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-24 21:09:52,271 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-24 21:09:52,271 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-24 21:09:52,272 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:09:51" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UTaipan-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-10-24 21:09:52,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-10-24 21:09:52,333 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-10-24 21:09:52,333 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2018-10-24 21:09:52,334 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2018-10-24 21:09:52,334 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-24 21:09:52,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-24 21:09:52,334 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-10-24 21:09:52,335 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-10-24 21:09:56,947 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-24 21:09:56,947 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:09:56 BoogieIcfgContainer [2018-10-24 21:09:56,948 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-24 21:09:56,951 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-10-24 21:09:56,951 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-10-24 21:09:56,954 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-10-24 21:09:56,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 09:09:50" (1/3) ... [2018-10-24 21:09:56,956 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36134513 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:09:56, skipping insertion in model container [2018-10-24 21:09:56,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 09:09:51" (2/3) ... [2018-10-24 21:09:56,956 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36134513 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 09:09:56, skipping insertion in model container [2018-10-24 21:09:56,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 09:09:56" (3/3) ... [2018-10-24 21:09:56,958 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem11_label24_true-unreach-call.c [2018-10-24 21:09:56,967 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-10-24 21:09:56,976 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-10-24 21:09:56,995 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-10-24 21:09:57,034 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-10-24 21:09:57,035 INFO L383 AbstractCegarLoop]: Hoare is true [2018-10-24 21:09:57,035 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-10-24 21:09:57,035 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-24 21:09:57,035 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-24 21:09:57,035 INFO L387 AbstractCegarLoop]: Difference is false [2018-10-24 21:09:57,035 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-24 21:09:57,036 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-10-24 21:09:57,063 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states. [2018-10-24 21:09:57,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-10-24 21:09:57,073 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:09:57,075 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:09:57,077 INFO L424 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:09:57,085 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:09:57,086 INFO L82 PathProgramCache]: Analyzing trace with hash -1684659980, now seen corresponding path program 1 times [2018-10-24 21:09:57,089 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:09:57,147 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:09:57,147 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:09:57,148 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:09:57,148 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:09:57,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:09:57,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:09:57,658 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:09:57,658 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-10-24 21:09:57,658 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:09:57,666 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-10-24 21:09:57,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-10-24 21:09:57,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:09:57,686 INFO L87 Difference]: Start difference. First operand 293 states. Second operand 4 states. [2018-10-24 21:10:01,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:10:01,318 INFO L93 Difference]: Finished difference Result 996 states and 1776 transitions. [2018-10-24 21:10:01,320 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-10-24 21:10:01,322 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 58 [2018-10-24 21:10:01,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:10:01,348 INFO L225 Difference]: With dead ends: 996 [2018-10-24 21:10:01,348 INFO L226 Difference]: Without dead ends: 697 [2018-10-24 21:10:01,359 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-10-24 21:10:01,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2018-10-24 21:10:01,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 481. [2018-10-24 21:10:01,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 481 states. [2018-10-24 21:10:01,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 742 transitions. [2018-10-24 21:10:01,460 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 742 transitions. Word has length 58 [2018-10-24 21:10:01,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:10:01,461 INFO L481 AbstractCegarLoop]: Abstraction has 481 states and 742 transitions. [2018-10-24 21:10:01,461 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-10-24 21:10:01,461 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 742 transitions. [2018-10-24 21:10:01,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-10-24 21:10:01,469 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:10:01,470 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:10:01,470 INFO L424 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:10:01,470 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:10:01,471 INFO L82 PathProgramCache]: Analyzing trace with hash 1326176867, now seen corresponding path program 1 times [2018-10-24 21:10:01,471 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:10:01,472 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:10:01,472 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:10:01,472 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:10:01,473 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:10:01,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:10:01,863 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:10:01,863 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:10:01,864 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-10-24 21:10:01,864 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:10:01,866 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-10-24 21:10:01,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-10-24 21:10:01,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-10-24 21:10:01,867 INFO L87 Difference]: Start difference. First operand 481 states and 742 transitions. Second operand 6 states. [2018-10-24 21:10:05,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:10:05,473 INFO L93 Difference]: Finished difference Result 1725 states and 2777 transitions. [2018-10-24 21:10:05,477 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-10-24 21:10:05,477 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 131 [2018-10-24 21:10:05,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:10:05,488 INFO L225 Difference]: With dead ends: 1725 [2018-10-24 21:10:05,488 INFO L226 Difference]: Without dead ends: 1250 [2018-10-24 21:10:05,493 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2018-10-24 21:10:05,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1250 states. [2018-10-24 21:10:05,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1250 to 1231. [2018-10-24 21:10:05,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1231 states. [2018-10-24 21:10:05,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1231 states to 1231 states and 1812 transitions. [2018-10-24 21:10:05,567 INFO L78 Accepts]: Start accepts. Automaton has 1231 states and 1812 transitions. Word has length 131 [2018-10-24 21:10:05,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:10:05,568 INFO L481 AbstractCegarLoop]: Abstraction has 1231 states and 1812 transitions. [2018-10-24 21:10:05,568 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-10-24 21:10:05,568 INFO L276 IsEmpty]: Start isEmpty. Operand 1231 states and 1812 transitions. [2018-10-24 21:10:05,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2018-10-24 21:10:05,578 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:10:05,578 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:10:05,578 INFO L424 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:10:05,579 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:10:05,580 INFO L82 PathProgramCache]: Analyzing trace with hash -704139656, now seen corresponding path program 1 times [2018-10-24 21:10:05,581 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:10:05,582 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:10:05,582 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:10:05,582 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:10:05,582 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:10:05,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:10:06,081 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-24 21:10:06,082 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-24 21:10:06,082 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-10-24 21:10:06,082 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:10:06,083 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-10-24 21:10:06,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-10-24 21:10:06,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-10-24 21:10:06,084 INFO L87 Difference]: Start difference. First operand 1231 states and 1812 transitions. Second operand 7 states. [2018-10-24 21:10:11,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:10:11,791 INFO L93 Difference]: Finished difference Result 3656 states and 5587 transitions. [2018-10-24 21:10:11,792 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-10-24 21:10:11,792 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 132 [2018-10-24 21:10:11,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:10:11,814 INFO L225 Difference]: With dead ends: 3656 [2018-10-24 21:10:11,814 INFO L226 Difference]: Without dead ends: 2431 [2018-10-24 21:10:11,826 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2018-10-24 21:10:11,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2431 states. [2018-10-24 21:10:11,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2431 to 2145. [2018-10-24 21:10:11,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2145 states. [2018-10-24 21:10:11,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2145 states to 2145 states and 2931 transitions. [2018-10-24 21:10:11,937 INFO L78 Accepts]: Start accepts. Automaton has 2145 states and 2931 transitions. Word has length 132 [2018-10-24 21:10:11,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:10:11,940 INFO L481 AbstractCegarLoop]: Abstraction has 2145 states and 2931 transitions. [2018-10-24 21:10:11,940 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-10-24 21:10:11,940 INFO L276 IsEmpty]: Start isEmpty. Operand 2145 states and 2931 transitions. [2018-10-24 21:10:11,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2018-10-24 21:10:11,943 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:10:11,943 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:10:11,944 INFO L424 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:10:11,944 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:10:11,944 INFO L82 PathProgramCache]: Analyzing trace with hash 1415755325, now seen corresponding path program 1 times [2018-10-24 21:10:11,944 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:10:11,945 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:10:11,945 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:10:11,945 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:10:11,946 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:10:11,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:10:12,440 WARN L179 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 6 DAG size of output: 3 [2018-10-24 21:10:12,500 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-24 21:10:12,501 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:10:12,501 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:10:12,502 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 176 with the following transitions: [2018-10-24 21:10:12,507 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [365], [367], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [710], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-24 21:10:12,625 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:10:12,625 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:10:16,898 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 21:10:30,141 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:10:30,143 INFO L272 AbstractInterpreter]: Visited 124 different actions 360 times. Merged at 5 different actions 10 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-10-24 21:10:30,189 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:10:30,189 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:10:33,177 INFO L232 lantSequenceWeakener]: Weakened 173 states. On average, predicates are now at 73.96% of their original sizes. [2018-10-24 21:10:33,177 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:10:34,256 INFO L413 sIntCurrentIteration]: We have 174 unified AI predicates [2018-10-24 21:10:34,256 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:10:34,257 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:10:34,257 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [5] total 15 [2018-10-24 21:10:34,257 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:10:34,258 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-10-24 21:10:34,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-10-24 21:10:34,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2018-10-24 21:10:34,259 INFO L87 Difference]: Start difference. First operand 2145 states and 2931 transitions. Second operand 12 states. [2018-10-24 21:11:21,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-24 21:11:21,385 INFO L93 Difference]: Finished difference Result 4669 states and 6428 transitions. [2018-10-24 21:11:21,386 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-10-24 21:11:21,386 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 175 [2018-10-24 21:11:21,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-10-24 21:11:21,399 INFO L225 Difference]: With dead ends: 4669 [2018-10-24 21:11:21,399 INFO L226 Difference]: Without dead ends: 2530 [2018-10-24 21:11:21,407 INFO L605 BasicCegarLoop]: 2 DeclaredPredicates, 184 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=115, Invalid=347, Unknown=0, NotChecked=0, Total=462 [2018-10-24 21:11:21,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2530 states. [2018-10-24 21:11:21,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2530 to 2526. [2018-10-24 21:11:21,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2526 states. [2018-10-24 21:11:21,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2526 states to 2526 states and 3338 transitions. [2018-10-24 21:11:21,477 INFO L78 Accepts]: Start accepts. Automaton has 2526 states and 3338 transitions. Word has length 175 [2018-10-24 21:11:21,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-10-24 21:11:21,478 INFO L481 AbstractCegarLoop]: Abstraction has 2526 states and 3338 transitions. [2018-10-24 21:11:21,478 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-10-24 21:11:21,478 INFO L276 IsEmpty]: Start isEmpty. Operand 2526 states and 3338 transitions. [2018-10-24 21:11:21,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2018-10-24 21:11:21,481 INFO L367 BasicCegarLoop]: Found error trace [2018-10-24 21:11:21,481 INFO L375 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-10-24 21:11:21,481 INFO L424 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-10-24 21:11:21,482 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:11:21,482 INFO L82 PathProgramCache]: Analyzing trace with hash 1882969289, now seen corresponding path program 1 times [2018-10-24 21:11:21,482 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-10-24 21:11:21,483 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:11:21,483 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-24 21:11:21,483 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-24 21:11:21,483 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-10-24 21:11:21,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-24 21:11:21,706 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 47 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-10-24 21:11:21,706 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-10-24 21:11:21,706 INFO L194 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-10-24 21:11:21,707 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 186 with the following transitions: [2018-10-24 21:11:21,707 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [9], [17], [25], [33], [41], [49], [57], [65], [73], [81], [89], [97], [105], [113], [121], [129], [137], [145], [153], [161], [169], [177], [185], [193], [201], [209], [217], [225], [233], [241], [249], [257], [265], [273], [281], [289], [297], [305], [313], [321], [329], [337], [345], [353], [361], [365], [367], [370], [378], [386], [394], [402], [410], [418], [426], [434], [442], [450], [458], [466], [474], [482], [490], [495], [499], [503], [507], [511], [515], [519], [523], [527], [531], [535], [539], [543], [547], [551], [555], [559], [563], [567], [571], [575], [579], [583], [587], [591], [595], [599], [603], [607], [611], [615], [626], [630], [634], [638], [642], [646], [650], [654], [658], [662], [666], [677], [688], [692], [696], [707], [711], [715], [719], [723], [727], [731], [735], [739], [743], [747], [750], [1084], [1088], [1092], [1098], [1102], [1104], [1109], [1110], [1111], [1113], [1114] [2018-10-24 21:11:21,714 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, OctagonDomain] [2018-10-24 21:11:21,715 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-10-24 21:11:27,957 WARN L79 EvaluatorLogger]: Possible loss of precision. Operator ARITHMOD has no precise implementation. [2018-10-24 21:11:40,979 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-10-24 21:11:40,979 INFO L272 AbstractInterpreter]: Visited 134 different actions 389 times. Merged at 5 different actions 9 times. Never widened. Found 1 fixpoints after 1 different actions. Largest state had 28 variables. [2018-10-24 21:11:40,984 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-24 21:11:40,984 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-10-24 21:11:43,725 INFO L232 lantSequenceWeakener]: Weakened 49 states. On average, predicates are now at 77.22% of their original sizes. [2018-10-24 21:11:43,725 INFO L411 sIntCurrentIteration]: Unifying AI predicates [2018-10-24 21:12:12,728 INFO L413 sIntCurrentIteration]: We have 184 unified AI predicates [2018-10-24 21:12:12,729 INFO L422 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-10-24 21:12:12,729 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-10-24 21:12:12,729 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [16] imperfect sequences [5] total 19 [2018-10-24 21:12:12,729 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-10-24 21:12:12,730 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-10-24 21:12:12,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-10-24 21:12:12,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2018-10-24 21:12:12,731 INFO L87 Difference]: Start difference. First operand 2526 states and 3338 transitions. Second operand 16 states. Received shutdown request... [2018-10-24 21:13:43,071 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-10-24 21:13:43,071 WARN L550 AbstractCegarLoop]: Verification canceled [2018-10-24 21:13:43,076 WARN L205 ceAbstractionStarter]: Timeout [2018-10-24 21:13:43,077 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 09:13:43 BoogieIcfgContainer [2018-10-24 21:13:43,077 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-10-24 21:13:43,078 INFO L168 Benchmark]: Toolchain (without parser) took 232184.82 ms. Allocated memory was 1.5 GB in the beginning and 4.0 GB in the end (delta: 2.5 GB). Free memory was 1.4 GB in the beginning and 1.9 GB in the end (delta: -491.0 MB). Peak memory consumption was 2.0 GB. Max. memory is 7.1 GB. [2018-10-24 21:13:43,079 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 21:13:43,080 INFO L168 Benchmark]: CACSL2BoogieTranslator took 911.37 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 52.9 MB). Peak memory consumption was 52.9 MB. Max. memory is 7.1 GB. [2018-10-24 21:13:43,081 INFO L168 Benchmark]: Boogie Procedure Inliner took 315.54 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 731.4 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -832.3 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. [2018-10-24 21:13:43,082 INFO L168 Benchmark]: Boogie Preprocessor took 146.04 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. [2018-10-24 21:13:43,082 INFO L168 Benchmark]: RCFGBuilder took 4677.45 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 175.9 MB). Peak memory consumption was 175.9 MB. Max. memory is 7.1 GB. [2018-10-24 21:13:43,083 INFO L168 Benchmark]: TraceAbstraction took 226126.31 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 2.0 GB in the beginning and 1.9 GB in the end (delta: 112.5 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. [2018-10-24 21:13:43,089 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 911.37 ms. Allocated memory is still 1.5 GB. Free memory was 1.4 GB in the beginning and 1.4 GB in the end (delta: 52.9 MB). Peak memory consumption was 52.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 315.54 ms. Allocated memory was 1.5 GB in the beginning and 2.3 GB in the end (delta: 731.4 MB). Free memory was 1.4 GB in the beginning and 2.2 GB in the end (delta: -832.3 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 146.04 ms. Allocated memory is still 2.3 GB. Free memory is still 2.2 GB. There was no memory consumed. Max. memory is 7.1 GB. * RCFGBuilder took 4677.45 ms. Allocated memory is still 2.3 GB. Free memory was 2.2 GB in the beginning and 2.0 GB in the end (delta: 175.9 MB). Peak memory consumption was 175.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 226126.31 ms. Allocated memory was 2.3 GB in the beginning and 4.0 GB in the end (delta: 1.7 GB). Free memory was 2.0 GB in the beginning and 1.9 GB in the end (delta: 112.5 MB). Peak memory consumption was 1.9 GB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 159]: Timeout (TraceAbstraction) Unable to prove that call of __VERIFIER_error() unreachable (line 159). Cancelled while BasicCegarLoop was constructing difference of abstraction (2526states) and FLOYD_HOARE automaton (currently 18 states, 16 states before enhancement),while ReachableStatesComputation was computing reachable states (318 states constructedinput type IntersectNwa). - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 293 locations, 1 error locations. TIMEOUT Result, 226.0s OverallTime, 5 OverallIterations, 2 TraceHistogramMax, 150.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 827 SDtfs, 4435 SDslu, 840 SDs, 0 SdLazy, 6996 SolverSat, 1391 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 63.2s Time, PredicateUnifierStatistics: 4 DeclaredPredicates, 403 GetRequests, 319 SyntacticMatches, 25 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 34.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2526occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 36.9s AbstIntTime, 2 AbstIntIterations, 2 AbstIntStrong, 0.99518193372942 AbsIntWeakeningRatio, 0.12290502793296089 AbsIntAvgWeakeningVarsNumRemoved, 698.6061452513967 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 4 MinimizatonAttempts, 525 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 681 NumberOfCodeBlocks, 681 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 676 ConstructedInterpolants, 0 QuantifiedInterpolants, 464392 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 110/204 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown