./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/array-tiling/mbpr3_true-unreach-call.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_082daa03-a36f-4011-9cce-57b6b4717a6a/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_082daa03-a36f-4011-9cce-57b6b4717a6a/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_082daa03-a36f-4011-9cce-57b6b4717a6a/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_082daa03-a36f-4011-9cce-57b6b4717a6a/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-tiling/mbpr3_true-unreach-call.i -s /tmp/vcloud-vcloud-master/worker/working_dir_082daa03-a36f-4011-9cce-57b6b4717a6a/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_082daa03-a36f-4011-9cce-57b6b4717a6a/bin-2019/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8a136246cd2405c1921bef8fd641517f185138ea .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_082daa03-a36f-4011-9cce-57b6b4717a6a/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_082daa03-a36f-4011-9cce-57b6b4717a6a/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_082daa03-a36f-4011-9cce-57b6b4717a6a/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_082daa03-a36f-4011-9cce-57b6b4717a6a/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-tiling/mbpr3_true-unreach-call.i -s /tmp/vcloud-vcloud-master/worker/working_dir_082daa03-a36f-4011-9cce-57b6b4717a6a/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_082daa03-a36f-4011-9cce-57b6b4717a6a/bin-2019/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8a136246cd2405c1921bef8fd641517f185138ea ............................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. No stderr output. --- Real Ultimate output --- This is Ultimate 0.1.23-1dbac8b [2018-11-10 03:17:55,812 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 03:17:55,814 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 03:17:55,820 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 03:17:55,820 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 03:17:55,820 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 03:17:55,821 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 03:17:55,822 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 03:17:55,823 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 03:17:55,823 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 03:17:55,823 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 03:17:55,824 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 03:17:55,824 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 03:17:55,825 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 03:17:55,825 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 03:17:55,826 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 03:17:55,826 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 03:17:55,827 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 03:17:55,828 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 03:17:55,829 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 03:17:55,830 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 03:17:55,831 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 03:17:55,833 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 03:17:55,833 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 03:17:55,833 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 03:17:55,834 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 03:17:55,834 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 03:17:55,835 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 03:17:55,835 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 03:17:55,836 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 03:17:55,836 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 03:17:55,836 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 03:17:55,836 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 03:17:55,837 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 03:17:55,837 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 03:17:55,838 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 03:17:55,838 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_082daa03-a36f-4011-9cce-57b6b4717a6a/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-10 03:17:55,845 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 03:17:55,845 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 03:17:55,846 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 03:17:55,846 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-10 03:17:55,846 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-10 03:17:55,846 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-10 03:17:55,847 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-10 03:17:55,847 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-10 03:17:55,847 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-10 03:17:55,847 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-10 03:17:55,847 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-10 03:17:55,848 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 03:17:55,848 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 03:17:55,848 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 03:17:55,848 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 03:17:55,848 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 03:17:55,848 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 03:17:55,848 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 03:17:55,849 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 03:17:55,849 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 03:17:55,849 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 03:17:55,849 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 03:17:55,849 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 03:17:55,849 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 03:17:55,849 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 03:17:55,849 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-10 03:17:55,850 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 03:17:55,850 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 03:17:55,850 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 03:17:55,850 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 03:17:55,850 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-10 03:17:55,850 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 03:17:55,850 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-10 03:17:55,850 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-10 03:17:55,851 INFO L133 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_082daa03-a36f-4011-9cce-57b6b4717a6a/bin-2019/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8a136246cd2405c1921bef8fd641517f185138ea [2018-11-10 03:17:55,874 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 03:17:55,884 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 03:17:55,887 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 03:17:55,888 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 03:17:55,888 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 03:17:55,889 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_082daa03-a36f-4011-9cce-57b6b4717a6a/bin-2019/utaipan/../../sv-benchmarks/c/array-tiling/mbpr3_true-unreach-call.i [2018-11-10 03:17:55,938 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_082daa03-a36f-4011-9cce-57b6b4717a6a/bin-2019/utaipan/data/3e0e57745/dffcc0a3e8b5491883e8de61b408544a/FLAG403773c69 [2018-11-10 03:17:56,350 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 03:17:56,350 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_082daa03-a36f-4011-9cce-57b6b4717a6a/sv-benchmarks/c/array-tiling/mbpr3_true-unreach-call.i [2018-11-10 03:17:56,355 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_082daa03-a36f-4011-9cce-57b6b4717a6a/bin-2019/utaipan/data/3e0e57745/dffcc0a3e8b5491883e8de61b408544a/FLAG403773c69 [2018-11-10 03:17:56,366 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_082daa03-a36f-4011-9cce-57b6b4717a6a/bin-2019/utaipan/data/3e0e57745/dffcc0a3e8b5491883e8de61b408544a [2018-11-10 03:17:56,369 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 03:17:56,370 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-10 03:17:56,371 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 03:17:56,371 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 03:17:56,375 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 03:17:56,376 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 03:17:56" (1/1) ... [2018-11-10 03:17:56,378 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61258a75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:17:56, skipping insertion in model container [2018-11-10 03:17:56,379 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 03:17:56" (1/1) ... [2018-11-10 03:17:56,388 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 03:17:56,408 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 03:17:56,538 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 03:17:56,541 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 03:17:56,560 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 03:17:56,573 INFO L193 MainTranslator]: Completed translation [2018-11-10 03:17:56,573 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:17:56 WrapperNode [2018-11-10 03:17:56,573 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 03:17:56,574 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-10 03:17:56,574 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-10 03:17:56,574 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-10 03:17:56,579 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:17:56" (1/1) ... [2018-11-10 03:17:56,586 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:17:56" (1/1) ... [2018-11-10 03:17:56,603 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-10 03:17:56,603 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 03:17:56,603 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 03:17:56,603 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 03:17:56,609 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:17:56" (1/1) ... [2018-11-10 03:17:56,609 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:17:56" (1/1) ... [2018-11-10 03:17:56,611 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:17:56" (1/1) ... [2018-11-10 03:17:56,611 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:17:56" (1/1) ... [2018-11-10 03:17:56,617 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:17:56" (1/1) ... [2018-11-10 03:17:56,622 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:17:56" (1/1) ... [2018-11-10 03:17:56,623 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:17:56" (1/1) ... [2018-11-10 03:17:56,625 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 03:17:56,626 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 03:17:56,626 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 03:17:56,626 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 03:17:56,627 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:17:56" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_082daa03-a36f-4011-9cce-57b6b4717a6a/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 03:17:56,707 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-10 03:17:56,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-10 03:17:56,708 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 03:17:56,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 03:17:56,708 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-10 03:17:56,708 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-10 03:17:56,708 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-10 03:17:56,708 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-10 03:17:56,953 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 03:17:56,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 03:17:56 BoogieIcfgContainer [2018-11-10 03:17:56,953 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 03:17:56,954 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-10 03:17:56,954 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-10 03:17:56,956 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-10 03:17:56,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 03:17:56" (1/3) ... [2018-11-10 03:17:56,957 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bc05ee0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 03:17:56, skipping insertion in model container [2018-11-10 03:17:56,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:17:56" (2/3) ... [2018-11-10 03:17:56,957 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bc05ee0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 03:17:56, skipping insertion in model container [2018-11-10 03:17:56,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 03:17:56" (3/3) ... [2018-11-10 03:17:56,959 INFO L112 eAbstractionObserver]: Analyzing ICFG mbpr3_true-unreach-call.i [2018-11-10 03:17:56,968 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-10 03:17:56,975 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-10 03:17:56,989 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-10 03:17:57,013 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-10 03:17:57,013 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-10 03:17:57,013 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-10 03:17:57,013 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 03:17:57,014 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 03:17:57,014 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-10 03:17:57,014 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 03:17:57,014 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-10 03:17:57,024 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2018-11-10 03:17:57,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-10 03:17:57,028 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 03:17:57,029 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] [2018-11-10 03:17:57,030 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 03:17:57,033 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 03:17:57,033 INFO L82 PathProgramCache]: Analyzing trace with hash 64051440, now seen corresponding path program 1 times [2018-11-10 03:17:57,035 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 03:17:57,070 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:17:57,070 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 03:17:57,071 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:17:57,071 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 03:17:57,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:17:57,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 03:17:57,139 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 03:17:57,139 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-10 03:17:57,139 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-10 03:17:57,142 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-10 03:17:57,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-10 03:17:57,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-10 03:17:57,151 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 2 states. [2018-11-10 03:17:57,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 03:17:57,165 INFO L93 Difference]: Finished difference Result 75 states and 99 transitions. [2018-11-10 03:17:57,165 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-10 03:17:57,166 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2018-11-10 03:17:57,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 03:17:57,171 INFO L225 Difference]: With dead ends: 75 [2018-11-10 03:17:57,171 INFO L226 Difference]: Without dead ends: 38 [2018-11-10 03:17:57,173 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-10 03:17:57,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-11-10 03:17:57,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-11-10 03:17:57,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-11-10 03:17:57,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 45 transitions. [2018-11-10 03:17:57,195 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 45 transitions. Word has length 21 [2018-11-10 03:17:57,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 03:17:57,195 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 45 transitions. [2018-11-10 03:17:57,196 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-10 03:17:57,196 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 45 transitions. [2018-11-10 03:17:57,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-10 03:17:57,197 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 03:17:57,197 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] [2018-11-10 03:17:57,197 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 03:17:57,197 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 03:17:57,197 INFO L82 PathProgramCache]: Analyzing trace with hash 2081580677, now seen corresponding path program 1 times [2018-11-10 03:17:57,198 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 03:17:57,198 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:17:57,199 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 03:17:57,199 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:17:57,199 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 03:17:57,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:17:57,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 03:17:57,277 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 03:17:57,277 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-10 03:17:57,277 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-10 03:17:57,278 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-10 03:17:57,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-10 03:17:57,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-10 03:17:57,279 INFO L87 Difference]: Start difference. First operand 38 states and 45 transitions. Second operand 5 states. [2018-11-10 03:17:57,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 03:17:57,323 INFO L93 Difference]: Finished difference Result 46 states and 53 transitions. [2018-11-10 03:17:57,324 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-10 03:17:57,324 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2018-11-10 03:17:57,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 03:17:57,325 INFO L225 Difference]: With dead ends: 46 [2018-11-10 03:17:57,325 INFO L226 Difference]: Without dead ends: 44 [2018-11-10 03:17:57,326 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-10 03:17:57,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-11-10 03:17:57,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2018-11-10 03:17:57,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-11-10 03:17:57,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2018-11-10 03:17:57,332 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 24 [2018-11-10 03:17:57,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 03:17:57,333 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2018-11-10 03:17:57,333 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-10 03:17:57,333 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2018-11-10 03:17:57,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-10 03:17:57,333 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 03:17:57,334 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] [2018-11-10 03:17:57,334 INFO L424 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 03:17:57,334 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 03:17:57,334 INFO L82 PathProgramCache]: Analyzing trace with hash 2083427719, now seen corresponding path program 1 times [2018-11-10 03:17:57,334 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 03:17:57,335 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:17:57,335 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 03:17:57,335 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:17:57,335 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 03:17:57,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:17:57,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 03:17:57,436 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 03:17:57,436 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-10 03:17:57,437 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-10 03:17:57,437 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-10 03:17:57,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-10 03:17:57,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-10 03:17:57,438 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand 4 states. [2018-11-10 03:17:57,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 03:17:57,510 INFO L93 Difference]: Finished difference Result 78 states and 92 transitions. [2018-11-10 03:17:57,510 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-10 03:17:57,511 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2018-11-10 03:17:57,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 03:17:57,514 INFO L225 Difference]: With dead ends: 78 [2018-11-10 03:17:57,514 INFO L226 Difference]: Without dead ends: 48 [2018-11-10 03:17:57,515 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-10 03:17:57,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-11-10 03:17:57,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 45. [2018-11-10 03:17:57,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-11-10 03:17:57,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 52 transitions. [2018-11-10 03:17:57,521 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 52 transitions. Word has length 24 [2018-11-10 03:17:57,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 03:17:57,522 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 52 transitions. [2018-11-10 03:17:57,522 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-10 03:17:57,522 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions. [2018-11-10 03:17:57,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-11-10 03:17:57,524 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 03:17:57,524 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-10 03:17:57,524 INFO L424 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 03:17:57,524 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 03:17:57,524 INFO L82 PathProgramCache]: Analyzing trace with hash -1846498088, now seen corresponding path program 1 times [2018-11-10 03:17:57,525 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 03:17:57,525 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:17:57,526 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 03:17:57,526 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:17:57,526 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 03:17:57,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:17:57,641 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-11-10 03:17:57,641 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 03:17:57,641 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-10 03:17:57,642 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-10 03:17:57,642 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-10 03:17:57,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-10 03:17:57,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-10 03:17:57,642 INFO L87 Difference]: Start difference. First operand 45 states and 52 transitions. Second operand 5 states. [2018-11-10 03:17:57,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 03:17:57,739 INFO L93 Difference]: Finished difference Result 82 states and 97 transitions. [2018-11-10 03:17:57,739 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-10 03:17:57,739 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2018-11-10 03:17:57,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 03:17:57,740 INFO L225 Difference]: With dead ends: 82 [2018-11-10 03:17:57,740 INFO L226 Difference]: Without dead ends: 58 [2018-11-10 03:17:57,740 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2018-11-10 03:17:57,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-11-10 03:17:57,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 49. [2018-11-10 03:17:57,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-11-10 03:17:57,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 56 transitions. [2018-11-10 03:17:57,747 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 56 transitions. Word has length 29 [2018-11-10 03:17:57,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 03:17:57,747 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 56 transitions. [2018-11-10 03:17:57,747 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-10 03:17:57,748 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 56 transitions. [2018-11-10 03:17:57,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-11-10 03:17:57,748 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 03:17:57,748 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-10 03:17:57,748 INFO L424 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 03:17:57,748 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 03:17:57,749 INFO L82 PathProgramCache]: Analyzing trace with hash -670608004, now seen corresponding path program 1 times [2018-11-10 03:17:57,749 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 03:17:57,749 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:17:57,749 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 03:17:57,749 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:17:57,749 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 03:17:57,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:17:57,792 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-10 03:17:57,793 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 03:17:57,793 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-10 03:17:57,793 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-10 03:17:57,793 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-10 03:17:57,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-10 03:17:57,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-10 03:17:57,794 INFO L87 Difference]: Start difference. First operand 49 states and 56 transitions. Second operand 3 states. [2018-11-10 03:17:57,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 03:17:57,822 INFO L93 Difference]: Finished difference Result 80 states and 92 transitions. [2018-11-10 03:17:57,825 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-10 03:17:57,825 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 39 [2018-11-10 03:17:57,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 03:17:57,825 INFO L225 Difference]: With dead ends: 80 [2018-11-10 03:17:57,825 INFO L226 Difference]: Without dead ends: 49 [2018-11-10 03:17:57,826 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-10 03:17:57,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-11-10 03:17:57,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-11-10 03:17:57,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-11-10 03:17:57,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 55 transitions. [2018-11-10 03:17:57,832 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 55 transitions. Word has length 39 [2018-11-10 03:17:57,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 03:17:57,832 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 55 transitions. [2018-11-10 03:17:57,832 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-10 03:17:57,833 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 55 transitions. [2018-11-10 03:17:57,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-11-10 03:17:57,833 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 03:17:57,833 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-10 03:17:57,833 INFO L424 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 03:17:57,834 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 03:17:57,834 INFO L82 PathProgramCache]: Analyzing trace with hash -1093309830, now seen corresponding path program 1 times [2018-11-10 03:17:57,834 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 03:17:57,834 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:17:57,834 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 03:17:57,834 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:17:57,834 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 03:17:57,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:17:57,878 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2018-11-10 03:17:57,878 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 03:17:57,878 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-10 03:17:57,878 INFO L258 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-10 03:17:57,878 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-10 03:17:57,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-10 03:17:57,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-10 03:17:57,879 INFO L87 Difference]: Start difference. First operand 49 states and 55 transitions. Second operand 3 states. [2018-11-10 03:17:57,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 03:17:57,890 INFO L93 Difference]: Finished difference Result 72 states and 81 transitions. [2018-11-10 03:17:57,890 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-10 03:17:57,890 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 39 [2018-11-10 03:17:57,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 03:17:57,891 INFO L225 Difference]: With dead ends: 72 [2018-11-10 03:17:57,891 INFO L226 Difference]: Without dead ends: 49 [2018-11-10 03:17:57,892 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-10 03:17:57,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-11-10 03:17:57,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-11-10 03:17:57,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-11-10 03:17:57,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 54 transitions. [2018-11-10 03:17:57,895 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 54 transitions. Word has length 39 [2018-11-10 03:17:57,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 03:17:57,896 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 54 transitions. [2018-11-10 03:17:57,896 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-10 03:17:57,896 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 54 transitions. [2018-11-10 03:17:57,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-11-10 03:17:57,896 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 03:17:57,897 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-10 03:17:57,897 INFO L424 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 03:17:57,897 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 03:17:57,897 INFO L82 PathProgramCache]: Analyzing trace with hash -1680115844, now seen corresponding path program 1 times [2018-11-10 03:17:57,897 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-10 03:17:57,898 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:17:57,898 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 03:17:57,898 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 03:17:57,898 INFO L288 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-10 03:17:57,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:17:58,005 ERROR L253 erpolLogProxyWrapper]: Symbol error in Interpolant 12. Subtree only symbols: [(main_~i~0_7 Int)]. Non-subtree only symbols: []. [2018-11-10 03:17:58,008 ERROR L253 erpolLogProxyWrapper]: Symbol error in Interpolant 13. Subtree only symbols: [(main_~i~0_7 Int)]. Non-subtree only symbols: []. [2018-11-10 03:17:58,012 ERROR L253 erpolLogProxyWrapper]: Symbol error in Interpolant 14. Subtree only symbols: [(main_~i~0_7 Int)]. Non-subtree only symbols: []. [2018-11-10 03:17:58,015 ERROR L253 erpolLogProxyWrapper]: Symbol error in Interpolant 15. Subtree only symbols: [(main_~i~0_7 Int)]. Non-subtree only symbols: []. [2018-11-10 03:17:58,018 ERROR L253 erpolLogProxyWrapper]: Symbol error in Interpolant 16. Subtree only symbols: [(main_~i~0_7 Int)]. Non-subtree only symbols: []. [2018-11-10 03:17:58,022 ERROR L253 erpolLogProxyWrapper]: Symbol error in Interpolant 17. Subtree only symbols: [(main_~i~0_7 Int)]. Non-subtree only symbols: []. [2018-11-10 03:17:58,065 FATAL L265 ToolchainWalker]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: generated interpolants did not pass sanity check at de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:1007) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.managedscript.ManagedScript.getInterpolants(ManagedScript.java:200) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.computeCraigInterpolants(NestedInterpolantsBuilder.java:282) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.NestedInterpolantsBuilder.(NestedInterpolantsBuilder.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsTree(InterpolatingTraceCheckCraig.java:271) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:207) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:109) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructCraig(TraceCheckConstructor.java:211) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructTraceCheck(TraceCheckConstructor.java:183) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseTaipanRefinementStrategy.getTraceCheck(BaseTaipanRefinementStrategy.java:216) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:223) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:197) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:70) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:429) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:435) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:123) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2018-11-10 03:17:58,068 INFO L168 Benchmark]: Toolchain (without parser) took 1698.31 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.9 MB). Free memory was 960.3 MB in the beginning and 980.6 MB in the end (delta: -20.3 MB). Peak memory consumption was 118.7 MB. Max. memory is 11.5 GB. [2018-11-10 03:17:58,069 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 03:17:58,069 INFO L168 Benchmark]: CACSL2BoogieTranslator took 202.55 ms. Allocated memory is still 1.0 GB. Free memory was 960.3 MB in the beginning and 949.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-10 03:17:58,070 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.65 ms. Allocated memory is still 1.0 GB. Free memory was 949.6 MB in the beginning and 946.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-10 03:17:58,070 INFO L168 Benchmark]: Boogie Preprocessor took 22.76 ms. Allocated memory is still 1.0 GB. Free memory was 946.9 MB in the beginning and 944.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-10 03:17:58,071 INFO L168 Benchmark]: RCFGBuilder took 327.50 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.9 MB). Free memory was 944.2 MB in the beginning and 1.1 GB in the end (delta: -168.0 MB). Peak memory consumption was 15.9 MB. Max. memory is 11.5 GB. [2018-11-10 03:17:58,071 INFO L168 Benchmark]: TraceAbstraction took 1113.51 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 980.6 MB in the end (delta: 131.6 MB). Peak memory consumption was 131.6 MB. Max. memory is 11.5 GB. [2018-11-10 03:17:58,074 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 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 202.55 ms. Allocated memory is still 1.0 GB. Free memory was 960.3 MB in the beginning and 949.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 28.65 ms. Allocated memory is still 1.0 GB. Free memory was 949.6 MB in the beginning and 946.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 22.76 ms. Allocated memory is still 1.0 GB. Free memory was 946.9 MB in the beginning and 944.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 327.50 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 138.9 MB). Free memory was 944.2 MB in the beginning and 1.1 GB in the end (delta: -168.0 MB). Peak memory consumption was 15.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1113.51 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 980.6 MB in the end (delta: 131.6 MB). Peak memory consumption was 131.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: generated interpolants did not pass sanity check de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: generated interpolants did not pass sanity check: de.uni_freiburg.informatik.ultimate.smtinterpol.smtlib2.SMTInterpol.getInterpolants(SMTInterpol.java:1007) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-1dbac8b [2018-11-10 03:17:59,555 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 03:17:59,557 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 03:17:59,567 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 03:17:59,567 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 03:17:59,568 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 03:17:59,569 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 03:17:59,570 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 03:17:59,572 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 03:17:59,572 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 03:17:59,573 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 03:17:59,574 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 03:17:59,575 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 03:17:59,576 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 03:17:59,577 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 03:17:59,578 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 03:17:59,579 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 03:17:59,580 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 03:17:59,581 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 03:17:59,583 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 03:17:59,584 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 03:17:59,585 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 03:17:59,588 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 03:17:59,588 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 03:17:59,588 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 03:17:59,589 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 03:17:59,590 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 03:17:59,591 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 03:17:59,592 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 03:17:59,592 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 03:17:59,593 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 03:17:59,593 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 03:17:59,593 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 03:17:59,594 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 03:17:59,595 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 03:17:59,596 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 03:17:59,596 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_082daa03-a36f-4011-9cce-57b6b4717a6a/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-11-10 03:17:59,609 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 03:17:59,609 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 03:17:59,610 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-10 03:17:59,610 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-10 03:17:59,610 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-10 03:17:59,610 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-10 03:17:59,611 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-10 03:17:59,611 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-10 03:17:59,612 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 03:17:59,612 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-10 03:17:59,612 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-10 03:17:59,612 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 03:17:59,612 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-10 03:17:59,612 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-10 03:17:59,613 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-10 03:17:59,613 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-10 03:17:59,613 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-10 03:17:59,613 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-10 03:17:59,613 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 03:17:59,613 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-10 03:17:59,614 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 03:17:59,614 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 03:17:59,614 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-10 03:17:59,614 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-10 03:17:59,614 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 03:17:59,614 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 03:17:59,616 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-10 03:17:59,617 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-10 03:17:59,617 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-11-10 03:17:59,617 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-10 03:17:59,617 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-10 03:17:59,617 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-10 03:17:59,617 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_082daa03-a36f-4011-9cce-57b6b4717a6a/bin-2019/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8a136246cd2405c1921bef8fd641517f185138ea [2018-11-10 03:17:59,651 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 03:17:59,661 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 03:17:59,664 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 03:17:59,666 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 03:17:59,666 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 03:17:59,667 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_082daa03-a36f-4011-9cce-57b6b4717a6a/bin-2019/utaipan/../../sv-benchmarks/c/array-tiling/mbpr3_true-unreach-call.i [2018-11-10 03:17:59,723 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_082daa03-a36f-4011-9cce-57b6b4717a6a/bin-2019/utaipan/data/2e35115d4/dd5cb3f792be46bba467f9017ec86ad1/FLAG0605fac29 [2018-11-10 03:18:00,048 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 03:18:00,048 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_082daa03-a36f-4011-9cce-57b6b4717a6a/sv-benchmarks/c/array-tiling/mbpr3_true-unreach-call.i [2018-11-10 03:18:00,052 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_082daa03-a36f-4011-9cce-57b6b4717a6a/bin-2019/utaipan/data/2e35115d4/dd5cb3f792be46bba467f9017ec86ad1/FLAG0605fac29 [2018-11-10 03:18:00,060 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_082daa03-a36f-4011-9cce-57b6b4717a6a/bin-2019/utaipan/data/2e35115d4/dd5cb3f792be46bba467f9017ec86ad1 [2018-11-10 03:18:00,062 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 03:18:00,063 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-10 03:18:00,063 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 03:18:00,063 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 03:18:00,065 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 03:18:00,066 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 03:18:00" (1/1) ... [2018-11-10 03:18:00,068 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@248f829a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:18:00, skipping insertion in model container [2018-11-10 03:18:00,068 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 03:18:00" (1/1) ... [2018-11-10 03:18:00,073 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 03:18:00,088 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 03:18:00,224 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 03:18:00,228 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 03:18:00,261 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 03:18:00,278 INFO L193 MainTranslator]: Completed translation [2018-11-10 03:18:00,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:18:00 WrapperNode [2018-11-10 03:18:00,279 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 03:18:00,279 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-10 03:18:00,279 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-10 03:18:00,280 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-10 03:18:00,286 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:18:00" (1/1) ... [2018-11-10 03:18:00,295 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:18:00" (1/1) ... [2018-11-10 03:18:00,316 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-10 03:18:00,316 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 03:18:00,316 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 03:18:00,316 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 03:18:00,324 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:18:00" (1/1) ... [2018-11-10 03:18:00,324 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:18:00" (1/1) ... [2018-11-10 03:18:00,327 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:18:00" (1/1) ... [2018-11-10 03:18:00,327 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:18:00" (1/1) ... [2018-11-10 03:18:00,333 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:18:00" (1/1) ... [2018-11-10 03:18:00,338 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:18:00" (1/1) ... [2018-11-10 03:18:00,340 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:18:00" (1/1) ... [2018-11-10 03:18:00,342 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 03:18:00,343 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 03:18:00,343 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 03:18:00,343 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 03:18:00,344 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:18:00" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_082daa03-a36f-4011-9cce-57b6b4717a6a/bin-2019/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-10 03:18:00,432 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-10 03:18:00,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-10 03:18:00,433 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 03:18:00,433 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 03:18:00,433 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-10 03:18:00,433 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-10 03:18:00,433 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-10 03:18:00,433 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-10 03:18:00,788 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 03:18:00,789 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 03:18:00 BoogieIcfgContainer [2018-11-10 03:18:00,789 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 03:18:00,790 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-10 03:18:00,790 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-10 03:18:00,792 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-10 03:18:00,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 03:18:00" (1/3) ... [2018-11-10 03:18:00,792 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@234a6f98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 03:18:00, skipping insertion in model container [2018-11-10 03:18:00,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:18:00" (2/3) ... [2018-11-10 03:18:00,793 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@234a6f98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 03:18:00, skipping insertion in model container [2018-11-10 03:18:00,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 03:18:00" (3/3) ... [2018-11-10 03:18:00,794 INFO L112 eAbstractionObserver]: Analyzing ICFG mbpr3_true-unreach-call.i [2018-11-10 03:18:00,801 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-10 03:18:00,806 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-10 03:18:00,816 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-10 03:18:00,833 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-10 03:18:00,833 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-10 03:18:00,833 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-10 03:18:00,833 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-10 03:18:00,833 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 03:18:00,833 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 03:18:00,834 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-10 03:18:00,834 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 03:18:00,834 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-10 03:18:00,845 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2018-11-10 03:18:00,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-11-10 03:18:00,850 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 03:18:00,851 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] [2018-11-10 03:18:00,852 INFO L424 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 03:18:00,857 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 03:18:00,857 INFO L82 PathProgramCache]: Analyzing trace with hash 64051440, now seen corresponding path program 1 times [2018-11-10 03:18:00,859 INFO L225 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-10 03:18:00,860 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_082daa03-a36f-4011-9cce-57b6b4717a6a/bin-2019/utaipan/cvc4nyu Starting monitored process 2 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-10 03:18:00,874 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 03:18:00,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:18:00,918 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 03:18:00,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 03:18:00,932 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-10 03:18:00,937 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 03:18:00,937 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-10 03:18:00,940 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-10 03:18:00,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-10 03:18:00,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-10 03:18:00,954 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 2 states. [2018-11-10 03:18:00,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 03:18:00,973 INFO L93 Difference]: Finished difference Result 75 states and 99 transitions. [2018-11-10 03:18:00,974 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-10 03:18:00,974 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2018-11-10 03:18:00,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 03:18:00,979 INFO L225 Difference]: With dead ends: 75 [2018-11-10 03:18:00,979 INFO L226 Difference]: Without dead ends: 38 [2018-11-10 03:18:00,981 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-10 03:18:00,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2018-11-10 03:18:01,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2018-11-10 03:18:01,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2018-11-10 03:18:01,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 45 transitions. [2018-11-10 03:18:01,010 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 45 transitions. Word has length 21 [2018-11-10 03:18:01,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 03:18:01,010 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 45 transitions. [2018-11-10 03:18:01,010 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-10 03:18:01,010 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 45 transitions. [2018-11-10 03:18:01,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-10 03:18:01,011 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 03:18:01,011 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] [2018-11-10 03:18:01,012 INFO L424 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 03:18:01,012 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 03:18:01,012 INFO L82 PathProgramCache]: Analyzing trace with hash 2081580677, now seen corresponding path program 1 times [2018-11-10 03:18:01,013 INFO L225 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-10 03:18:01,013 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_082daa03-a36f-4011-9cce-57b6b4717a6a/bin-2019/utaipan/cvc4nyu Starting monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-10 03:18:01,034 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 03:18:01,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:18:01,067 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 03:18:01,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 03:18:01,128 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-10 03:18:01,129 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 03:18:01,129 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-10 03:18:01,131 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-10 03:18:01,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-10 03:18:01,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-10 03:18:01,132 INFO L87 Difference]: Start difference. First operand 38 states and 45 transitions. Second operand 5 states. [2018-11-10 03:18:01,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 03:18:01,176 INFO L93 Difference]: Finished difference Result 46 states and 53 transitions. [2018-11-10 03:18:01,177 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-10 03:18:01,177 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2018-11-10 03:18:01,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 03:18:01,178 INFO L225 Difference]: With dead ends: 46 [2018-11-10 03:18:01,178 INFO L226 Difference]: Without dead ends: 44 [2018-11-10 03:18:01,178 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-10 03:18:01,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-11-10 03:18:01,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2018-11-10 03:18:01,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-11-10 03:18:01,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 50 transitions. [2018-11-10 03:18:01,183 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 50 transitions. Word has length 24 [2018-11-10 03:18:01,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 03:18:01,184 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 50 transitions. [2018-11-10 03:18:01,184 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-10 03:18:01,184 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 50 transitions. [2018-11-10 03:18:01,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-11-10 03:18:01,185 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 03:18:01,185 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] [2018-11-10 03:18:01,185 INFO L424 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 03:18:01,185 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 03:18:01,185 INFO L82 PathProgramCache]: Analyzing trace with hash 2083427719, now seen corresponding path program 1 times [2018-11-10 03:18:01,186 INFO L225 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-10 03:18:01,186 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_082daa03-a36f-4011-9cce-57b6b4717a6a/bin-2019/utaipan/cvc4nyu Starting monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-10 03:18:01,198 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 03:18:01,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:18:01,335 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 03:18:01,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 03:18:01,483 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-10 03:18:01,485 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-10 03:18:01,485 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-10 03:18:01,486 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-10 03:18:01,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-10 03:18:01,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-10 03:18:01,486 INFO L87 Difference]: Start difference. First operand 43 states and 50 transitions. Second operand 4 states. [2018-11-10 03:18:01,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-10 03:18:01,990 INFO L93 Difference]: Finished difference Result 78 states and 92 transitions. [2018-11-10 03:18:01,994 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-10 03:18:01,994 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2018-11-10 03:18:01,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-10 03:18:01,996 INFO L225 Difference]: With dead ends: 78 [2018-11-10 03:18:01,996 INFO L226 Difference]: Without dead ends: 48 [2018-11-10 03:18:01,997 INFO L605 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-10 03:18:01,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2018-11-10 03:18:02,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 45. [2018-11-10 03:18:02,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-11-10 03:18:02,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 52 transitions. [2018-11-10 03:18:02,003 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 52 transitions. Word has length 24 [2018-11-10 03:18:02,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-10 03:18:02,003 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 52 transitions. [2018-11-10 03:18:02,003 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-10 03:18:02,003 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions. [2018-11-10 03:18:02,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-11-10 03:18:02,004 INFO L367 BasicCegarLoop]: Found error trace [2018-11-10 03:18:02,004 INFO L375 BasicCegarLoop]: trace histogram [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] [2018-11-10 03:18:02,004 INFO L424 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-10 03:18:02,004 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 03:18:02,004 INFO L82 PathProgramCache]: Analyzing trace with hash -1846498088, now seen corresponding path program 1 times [2018-11-10 03:18:02,005 INFO L225 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-10 03:18:02,005 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_082daa03-a36f-4011-9cce-57b6b4717a6a/bin-2019/utaipan/cvc4nyu Starting monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-10 03:18:02,016 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 03:18:02,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:18:02,149 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 03:18:02,666 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 03:18:02,666 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-10 03:18:03,647 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 03:18:03,649 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-10 03:18:03,649 INFO L225 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_082daa03-a36f-4011-9cce-57b6b4717a6a/bin-2019/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-10 03:18:03,657 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 03:18:03,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-10 03:18:03,690 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-10 03:18:04,185 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 03:18:04,185 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-10 03:18:04,470 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-10 03:18:04,487 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2018-11-10 03:18:04,488 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [7, 7, 6] total 15 [2018-11-10 03:18:04,488 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-10 03:18:04,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-10 03:18:04,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2018-11-10 03:18:04,489 INFO L87 Difference]: Start difference. First operand 45 states and 52 transitions. Second operand 15 states. [2018-11-10 03:18:05,083 WARN L179 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 10 [2018-11-10 03:18:05,670 WARN L179 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2018-11-10 03:18:08,147 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-10 03:18:08,148 FATAL L265 ToolchainWalker]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. No stderr output. at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:208) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parseCheckSatResult(Executor.java:225) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.checkSat(Scriptor.java:155) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.WrapperScript.checkSat(WrapperScript.java:116) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.WrapperScript.checkSat(WrapperScript.java:116) at de.uni_freiburg.informatik.ultimate.logic.Util.checkSat(Util.java:61) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.getRedundancy(SimplifyDDA.java:621) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.SimplifyDDAWithTimeout.getRedundancy(SimplifyDDAWithTimeout.java:122) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA$Simplifier.walk(SimplifyDDA.java:371) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:122) at de.uni_freiburg.informatik.ultimate.logic.NonRecursive.run(NonRecursive.java:113) at de.uni_freiburg.informatik.ultimate.logic.simplification.SimplifyDDA.simplifyOnce(SimplifyDDA.java:650) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.SimplifyDDAWithTimeout.getSimplifiedTerm(SimplifyDDAWithTimeout.java:187) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.SmtUtils.simplify(SmtUtils.java:150) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:354) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicateForConjunction(PredicateUnifier.java:382) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicateForConjunction(PredicateUnifier.java:223) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.getOrConstructPredicate(DeterministicInterpolantAutomaton.java:281) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.constructSuccessorsAndTransitions(DeterministicInterpolantAutomaton.java:303) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:78) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:234) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.TotalizeNwa.internalSuccessors(TotalizeNwa.java:213) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ComplementDeterministicNwa.internalSuccessors(ComplementDeterministicNwa.java:121) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:216) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.ProductNwa.internalSuccessors(ProductNwa.java:208) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.addInternalsAndSuccessors(NestedWordAutomatonReachableStates.java:1066) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates$ReachableStatesComputation.(NestedWordAutomatonReachableStates.java:968) at de.uni_freiburg.informatik.ultimate.automata.nestedword.reachablestates.NestedWordAutomatonReachableStates.(NestedWordAutomatonReachableStates.java:188) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.computeDifference(Difference.java:137) at de.uni_freiburg.informatik.ultimate.automata.nestedword.operations.Difference.(Difference.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.computeAutomataDifference(BasicCegarLoop.java:673) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.refineAbstraction(BasicCegarLoop.java:602) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:473) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:376) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:312) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:123) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: EOF at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser$Action$.CUP$do_action(Parser.java:1427) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Parser.do_action(Parser.java:630) at com.github.jhoenicke.javacup.runtime.LRParser.parse(LRParser.java:419) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:205) ... 49 more [2018-11-10 03:18:08,151 INFO L168 Benchmark]: Toolchain (without parser) took 8088.39 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 162.0 MB). Free memory was 945.2 MB in the beginning and 981.1 MB in the end (delta: -36.0 MB). Peak memory consumption was 126.0 MB. Max. memory is 11.5 GB. [2018-11-10 03:18:08,152 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 973.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 03:18:08,152 INFO L168 Benchmark]: CACSL2BoogieTranslator took 215.57 ms. Allocated memory is still 1.0 GB. Free memory was 945.2 MB in the beginning and 927.7 MB in the end (delta: 17.4 MB). Peak memory consumption was 17.4 MB. Max. memory is 11.5 GB. [2018-11-10 03:18:08,152 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.59 ms. Allocated memory is still 1.0 GB. Free memory is still 927.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 03:18:08,153 INFO L168 Benchmark]: Boogie Preprocessor took 26.33 ms. Allocated memory is still 1.0 GB. Free memory is still 927.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 03:18:08,153 INFO L168 Benchmark]: RCFGBuilder took 446.43 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 162.0 MB). Free memory was 927.7 MB in the beginning and 1.1 GB in the end (delta: -201.8 MB). Peak memory consumption was 21.7 MB. Max. memory is 11.5 GB. [2018-11-10 03:18:08,154 INFO L168 Benchmark]: TraceAbstraction took 7360.54 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 981.1 MB in the end (delta: 141.6 MB). Peak memory consumption was 141.6 MB. Max. memory is 11.5 GB. [2018-11-10 03:18:08,156 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 973.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 215.57 ms. Allocated memory is still 1.0 GB. Free memory was 945.2 MB in the beginning and 927.7 MB in the end (delta: 17.4 MB). Peak memory consumption was 17.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 36.59 ms. Allocated memory is still 1.0 GB. Free memory is still 927.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 26.33 ms. Allocated memory is still 1.0 GB. Free memory is still 927.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 446.43 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 162.0 MB). Free memory was 927.7 MB in the beginning and 1.1 GB in the end (delta: -201.8 MB). Peak memory consumption was 21.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 7360.54 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 981.1 MB in the end (delta: 141.6 MB). Peak memory consumption was 141.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. No stderr output. de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: External (z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000)Received EOF on stdin. No stderr output.: de.uni_freiburg.informatik.ultimate.smtsolver.external.Executor.parse(Executor.java:208) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...