./Ultimate.py --spec ../../sv-benchmarks/c/Systems_DeviceDriversLinux64_ReachSafety.prp --file ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--rfc1201.ko-entry_point_false-unreach-call.cil.out.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_da512a03-716e-411f-bdc1-95d025c58b60/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_da512a03-716e-411f-bdc1-95d025c58b60/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_da512a03-716e-411f-bdc1-95d025c58b60/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_da512a03-716e-411f-bdc1-95d025c58b60/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--rfc1201.ko-entry_point_false-unreach-call.cil.out.c -s /tmp/vcloud-vcloud-master/worker/working_dir_da512a03-716e-411f-bdc1-95d025c58b60/bin-2019/utaipan/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_da512a03-716e-411f-bdc1-95d025c58b60/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 64bit --witnessprinter.graph.data.programhash c8baf6dc591fb50b813986556c788bf1c702adbf .................................................................................................................................................................................................................................................................................................................................................................................................................................... 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_da512a03-716e-411f-bdc1-95d025c58b60/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_da512a03-716e-411f-bdc1-95d025c58b60/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_da512a03-716e-411f-bdc1-95d025c58b60/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_da512a03-716e-411f-bdc1-95d025c58b60/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--rfc1201.ko-entry_point_false-unreach-call.cil.out.c -s /tmp/vcloud-vcloud-master/worker/working_dir_da512a03-716e-411f-bdc1-95d025c58b60/bin-2019/utaipan/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_da512a03-716e-411f-bdc1-95d025c58b60/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 64bit --witnessprinter.graph.data.programhash c8baf6dc591fb50b813986556c788bf1c702adbf ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: ConstantTerm is neither BigInter nor BigDecimal, therefore comparison is not possible! --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 09:48:09,514 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 09:48:09,515 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 09:48:09,522 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 09:48:09,523 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 09:48:09,523 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 09:48:09,524 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 09:48:09,525 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 09:48:09,526 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 09:48:09,526 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 09:48:09,527 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 09:48:09,527 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 09:48:09,528 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 09:48:09,529 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 09:48:09,530 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 09:48:09,530 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 09:48:09,531 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 09:48:09,532 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 09:48:09,533 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 09:48:09,534 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 09:48:09,535 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 09:48:09,536 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 09:48:09,538 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 09:48:09,538 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 09:48:09,538 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 09:48:09,539 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 09:48:09,540 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 09:48:09,541 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 09:48:09,541 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 09:48:09,542 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 09:48:09,542 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 09:48:09,543 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 09:48:09,543 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 09:48:09,543 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 09:48:09,544 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 09:48:09,544 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 09:48:09,545 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_da512a03-716e-411f-bdc1-95d025c58b60/bin-2019/utaipan/config/svcomp-Reach-64bit-Taipan_Default.epf [2018-11-18 09:48:09,555 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 09:48:09,555 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 09:48:09,556 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 09:48:09,556 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 09:48:09,556 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 09:48:09,556 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 09:48:09,556 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 09:48:09,556 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-18 09:48:09,556 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 09:48:09,556 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 09:48:09,557 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-18 09:48:09,557 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-18 09:48:09,557 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-18 09:48:09,557 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 09:48:09,557 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 09:48:09,557 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 09:48:09,558 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 09:48:09,558 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 09:48:09,558 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 09:48:09,558 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 09:48:09,558 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 09:48:09,558 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 09:48:09,558 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 09:48:09,559 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 09:48:09,559 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 09:48:09,559 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 09:48:09,559 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 09:48:09,559 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 09:48:09,561 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 09:48:09,561 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 09:48:09,561 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 09:48:09,561 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-18 09:48:09,561 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 09:48:09,561 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 09:48:09,562 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-18 09:48:09,562 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-18 09:48:09,562 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_da512a03-716e-411f-bdc1-95d025c58b60/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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c8baf6dc591fb50b813986556c788bf1c702adbf [2018-11-18 09:48:09,585 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 09:48:09,595 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 09:48:09,597 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 09:48:09,598 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 09:48:09,599 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 09:48:09,599 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_da512a03-716e-411f-bdc1-95d025c58b60/bin-2019/utaipan/../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--rfc1201.ko-entry_point_false-unreach-call.cil.out.c [2018-11-18 09:48:09,639 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_da512a03-716e-411f-bdc1-95d025c58b60/bin-2019/utaipan/data/5540038e2/976b4acf55e4427a969c4b4fd5db4229/FLAG4939aa145 [2018-11-18 09:48:10,180 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 09:48:10,181 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_da512a03-716e-411f-bdc1-95d025c58b60/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--rfc1201.ko-entry_point_false-unreach-call.cil.out.c [2018-11-18 09:48:10,200 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_da512a03-716e-411f-bdc1-95d025c58b60/bin-2019/utaipan/data/5540038e2/976b4acf55e4427a969c4b4fd5db4229/FLAG4939aa145 [2018-11-18 09:48:10,619 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_da512a03-716e-411f-bdc1-95d025c58b60/bin-2019/utaipan/data/5540038e2/976b4acf55e4427a969c4b4fd5db4229 [2018-11-18 09:48:10,621 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 09:48:10,622 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 09:48:10,622 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 09:48:10,623 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 09:48:10,626 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 09:48:10,627 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:48:10" (1/1) ... [2018-11-18 09:48:10,629 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76f4d0bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:48:10, skipping insertion in model container [2018-11-18 09:48:10,629 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:48:10" (1/1) ... [2018-11-18 09:48:10,638 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 09:48:10,707 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 09:48:11,744 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 09:48:11,783 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 09:48:12,141 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 09:48:12,175 INFO L195 MainTranslator]: Completed translation [2018-11-18 09:48:12,175 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:48:12 WrapperNode [2018-11-18 09:48:12,176 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 09:48:12,176 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 09:48:12,176 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 09:48:12,176 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 09:48:12,181 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:48:12" (1/1) ... [2018-11-18 09:48:12,205 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:48:12" (1/1) ... [2018-11-18 09:48:12,214 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 09:48:12,215 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 09:48:12,215 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 09:48:12,215 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 09:48:12,221 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:48:12" (1/1) ... [2018-11-18 09:48:12,221 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:48:12" (1/1) ... [2018-11-18 09:48:12,230 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:48:12" (1/1) ... [2018-11-18 09:48:12,230 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:48:12" (1/1) ... [2018-11-18 09:48:12,268 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:48:12" (1/1) ... [2018-11-18 09:48:12,275 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:48:12" (1/1) ... [2018-11-18 09:48:12,281 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:48:12" (1/1) ... [2018-11-18 09:48:12,292 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 09:48:12,292 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 09:48:12,293 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 09:48:12,293 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 09:48:12,293 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:48:12" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_da512a03-716e-411f-bdc1-95d025c58b60/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 [2018-11-18 09:48:12,344 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netif_rx_15 [2018-11-18 09:48:12,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netif_rx_15 [2018-11-18 09:48:12,345 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free_int [2018-11-18 09:48:12,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free_int [2018-11-18 09:48:12,345 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netif_rx_13 [2018-11-18 09:48:12,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netif_rx_13 [2018-11-18 09:48:12,345 INFO L130 BoogieDeclarations]: Found specification of procedure load_pkt [2018-11-18 09:48:12,345 INFO L138 BoogieDeclarations]: Found implementation of procedure load_pkt [2018-11-18 09:48:12,345 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_ArcProto_1 [2018-11-18 09:48:12,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_ArcProto_1 [2018-11-18 09:48:12,346 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 09:48:12,346 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 09:48:12,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-11-18 09:48:12,346 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-11-18 09:48:12,346 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_init [2018-11-18 09:48:12,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_init [2018-11-18 09:48:12,346 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 09:48:12,346 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2018-11-18 09:48:12,346 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2018-11-18 09:48:12,346 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2018-11-18 09:48:12,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2018-11-18 09:48:12,347 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2018-11-18 09:48:12,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2018-11-18 09:48:12,347 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-18 09:48:12,347 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_tx [2018-11-18 09:48:12,347 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_tx [2018-11-18 09:48:12,347 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2018-11-18 09:48:12,347 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2018-11-18 09:48:12,347 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-11-18 09:48:12,348 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_is_empty [2018-11-18 09:48:12,348 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_is_empty [2018-11-18 09:48:12,348 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2018-11-18 09:48:12,348 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2018-11-18 09:48:12,348 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2018-11-18 09:48:12,348 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2018-11-18 09:48:12,348 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2018-11-18 09:48:12,348 INFO L130 BoogieDeclarations]: Found specification of procedure arcnet_unregister_proto [2018-11-18 09:48:12,349 INFO L130 BoogieDeclarations]: Found specification of procedure arcnet_rfc1201_exit [2018-11-18 09:48:12,349 INFO L138 BoogieDeclarations]: Found implementation of procedure arcnet_rfc1201_exit [2018-11-18 09:48:12,349 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_skb_12 [2018-11-18 09:48:12,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_skb_12 [2018-11-18 09:48:12,349 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 09:48:12,349 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2018-11-18 09:48:12,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2018-11-18 09:48:12,349 INFO L130 BoogieDeclarations]: Found specification of procedure rx [2018-11-18 09:48:12,349 INFO L138 BoogieDeclarations]: Found implementation of procedure rx [2018-11-18 09:48:12,350 INFO L130 BoogieDeclarations]: Found specification of procedure type_trans [2018-11-18 09:48:12,350 INFO L138 BoogieDeclarations]: Found implementation of procedure type_trans [2018-11-18 09:48:12,350 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2018-11-18 09:48:12,350 INFO L130 BoogieDeclarations]: Found specification of procedure arcnet_rfc1201_init [2018-11-18 09:48:12,350 INFO L138 BoogieDeclarations]: Found implementation of procedure arcnet_rfc1201_init [2018-11-18 09:48:12,350 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-18 09:48:12,350 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2018-11-18 09:48:12,350 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2018-11-18 09:48:12,350 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2018-11-18 09:48:12,351 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2018-11-18 09:48:12,351 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2018-11-18 09:48:12,351 INFO L130 BoogieDeclarations]: Found specification of procedure continue_tx [2018-11-18 09:48:12,351 INFO L138 BoogieDeclarations]: Found implementation of procedure continue_tx [2018-11-18 09:48:12,351 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2018-11-18 09:48:12,351 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2018-11-18 09:48:12,351 INFO L130 BoogieDeclarations]: Found specification of procedure build_header [2018-11-18 09:48:12,351 INFO L138 BoogieDeclarations]: Found implementation of procedure build_header [2018-11-18 09:48:12,351 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2018-11-18 09:48:12,352 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2018-11-18 09:48:12,352 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reset_mac_header [2018-11-18 09:48:12,352 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reset_mac_header [2018-11-18 09:48:12,352 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 09:48:12,352 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 09:48:12,352 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~int~X~int~X~$Pointer$~X~int~TO~VOID [2018-11-18 09:48:12,352 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~int~X~int~X~$Pointer$~X~int~TO~VOID [2018-11-18 09:48:12,352 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2018-11-18 09:48:12,352 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2018-11-18 09:48:12,353 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2018-11-18 09:48:12,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2018-11-18 09:48:12,353 INFO L130 BoogieDeclarations]: Found specification of procedure __dev_kfree_skb_irq [2018-11-18 09:48:12,353 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2018-11-18 09:48:12,353 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2018-11-18 09:48:12,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 09:48:12,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 09:48:14,461 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 09:48:14,462 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:48:14 BoogieIcfgContainer [2018-11-18 09:48:14,462 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 09:48:14,463 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 09:48:14,463 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 09:48:14,466 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 09:48:14,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 09:48:10" (1/3) ... [2018-11-18 09:48:14,467 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c1af215 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:48:14, skipping insertion in model container [2018-11-18 09:48:14,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:48:12" (2/3) ... [2018-11-18 09:48:14,467 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c1af215 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:48:14, skipping insertion in model container [2018-11-18 09:48:14,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:48:14" (3/3) ... [2018-11-18 09:48:14,470 INFO L112 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--rfc1201.ko-entry_point_false-unreach-call.cil.out.c [2018-11-18 09:48:14,478 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 09:48:14,489 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 09:48:14,502 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 09:48:14,530 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 09:48:14,530 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 09:48:14,530 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 09:48:14,531 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 09:48:14,531 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 09:48:14,531 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 09:48:14,531 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 09:48:14,531 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 09:48:14,550 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states. [2018-11-18 09:48:14,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-11-18 09:48:14,558 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:48:14,559 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:48:14,561 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:48:14,565 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:48:14,566 INFO L82 PathProgramCache]: Analyzing trace with hash -819965771, now seen corresponding path program 1 times [2018-11-18 09:48:14,568 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 09:48:14,627 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:48:14,628 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:48:14,628 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:48:14,628 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 09:48:14,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:48:14,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:48:14,933 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 09:48:14,934 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 09:48:14,934 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 09:48:14,939 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 09:48:14,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 09:48:14,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 09:48:14,953 INFO L87 Difference]: Start difference. First operand 347 states. Second operand 3 states. [2018-11-18 09:48:16,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:48:16,130 INFO L93 Difference]: Finished difference Result 956 states and 1339 transitions. [2018-11-18 09:48:16,131 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 09:48:16,131 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2018-11-18 09:48:16,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:48:16,142 INFO L225 Difference]: With dead ends: 956 [2018-11-18 09:48:16,142 INFO L226 Difference]: Without dead ends: 615 [2018-11-18 09:48:16,147 INFO L604 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 [2018-11-18 09:48:16,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2018-11-18 09:48:16,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 615. [2018-11-18 09:48:16,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 615 states. [2018-11-18 09:48:16,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 835 transitions. [2018-11-18 09:48:16,208 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 835 transitions. Word has length 46 [2018-11-18 09:48:16,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:48:16,209 INFO L480 AbstractCegarLoop]: Abstraction has 615 states and 835 transitions. [2018-11-18 09:48:16,209 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 09:48:16,209 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 835 transitions. [2018-11-18 09:48:16,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-11-18 09:48:16,212 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:48:16,212 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:48:16,212 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:48:16,212 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:48:16,212 INFO L82 PathProgramCache]: Analyzing trace with hash -296131235, now seen corresponding path program 1 times [2018-11-18 09:48:16,213 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 09:48:16,217 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:48:16,217 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:48:16,217 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:48:16,217 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 09:48:16,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:48:16,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:48:16,372 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 09:48:16,372 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-18 09:48:16,373 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 09:48:16,374 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 09:48:16,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 09:48:16,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-18 09:48:16,374 INFO L87 Difference]: Start difference. First operand 615 states and 835 transitions. Second operand 5 states. [2018-11-18 09:48:16,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:48:16,437 INFO L93 Difference]: Finished difference Result 1208 states and 1645 transitions. [2018-11-18 09:48:16,437 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 09:48:16,437 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 51 [2018-11-18 09:48:16,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:48:16,441 INFO L225 Difference]: With dead ends: 1208 [2018-11-18 09:48:16,441 INFO L226 Difference]: Without dead ends: 614 [2018-11-18 09:48:16,442 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-11-18 09:48:16,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2018-11-18 09:48:16,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 614. [2018-11-18 09:48:16,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 614 states. [2018-11-18 09:48:16,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 831 transitions. [2018-11-18 09:48:16,494 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 831 transitions. Word has length 51 [2018-11-18 09:48:16,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:48:16,495 INFO L480 AbstractCegarLoop]: Abstraction has 614 states and 831 transitions. [2018-11-18 09:48:16,495 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 09:48:16,495 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 831 transitions. [2018-11-18 09:48:16,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-11-18 09:48:16,498 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:48:16,498 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:48:16,498 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:48:16,499 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:48:16,499 INFO L82 PathProgramCache]: Analyzing trace with hash -849995357, now seen corresponding path program 1 times [2018-11-18 09:48:16,499 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 09:48:16,502 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:48:16,502 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:48:16,502 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 09:48:16,502 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 09:48:16,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:48:16,660 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-11-18 09:48:16,660 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 09:48:16,660 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 09:48:16,661 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 79 with the following transitions: [2018-11-18 09:48:16,662 INFO L202 CegarAbsIntRunner]: [304], [306], [308], [309], [310], [312], [315], [317], [389], [392], [395], [398], [401], [403], [407], [410], [413], [415], [418], [427], [515], [516], [517], [520], [524], [525], [526], [566], [674], [675], [730], [736], [737], [748], [749], [752], [754], [759], [763], [766], [770], [776], [777], [836], [837], [838], [839], [840], [841], [842], [843], [844], [845], [856], [857], [858], [859], [860], [861], [866], [870], [871], [884], [885], [886], [890], [891], [892] [2018-11-18 09:48:16,689 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-18 09:48:16,689 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-18 09:48:16,842 FATAL L292 ToolchainWalker]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: java.lang.IllegalArgumentException: unknown symbol (const Int (Array Int Int)) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.extractInterpolants(BaseRefinementStrategy.java:391) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.handleInfeasibleCase(BaseRefinementStrategy.java:296) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:206) 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:434) 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: java.lang.IllegalArgumentException: unknown symbol (const Int (Array Int Int)) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.MappedTerm2Expression.translate(MappedTerm2Expression.java:209) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.MappedTerm2Expression.translate(MappedTerm2Expression.java:129) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.MappedTerm2Expression.translateStore(MappedTerm2Expression.java:291) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.MappedTerm2Expression.translate(MappedTerm2Expression.java:157) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.MappedTerm2Expression.translate(MappedTerm2Expression.java:129) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.MappedTerm2Expression.translate(MappedTerm2Expression.java:165) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.boogie.MappedTerm2Expression.translate(MappedTerm2Expression.java:129) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.util.AssumptionBuilder.constructBoogieAssumeStatement(AssumptionBuilder.java:75) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.util.TermConjunctEvaluator.getCachedCodeBlock(TermConjunctEvaluator.java:273) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.util.TermConjunctEvaluator.applyPost(TermConjunctEvaluator.java:296) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.util.TermConjunctEvaluator.lambda$4(TermConjunctEvaluator.java:178) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.util.TermConjunctEvaluator.computeFixpoint(TermConjunctEvaluator.java:198) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.util.TermConjunctEvaluator.lambda$1(TermConjunctEvaluator.java:150) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.util.TermConjunctEvaluator.computePost(TermConjunctEvaluator.java:93) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormanCachedPostOperation.applyPost(PoormanCachedPostOperation.java:308) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormansAbstractPostOperator.applyPost(PoormansAbstractPostOperator.java:217) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormansAbstractPostOperator.apply(PoormansAbstractPostOperator.java:119) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormansAbstractPostOperator.apply(PoormansAbstractPostOperator.java:1) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.absint.DisjunctiveAbstractState.lambda$17(DisjunctiveAbstractState.java:340) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.absint.DisjunctiveAbstractState.mapCollection(DisjunctiveAbstractState.java:536) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.absint.DisjunctiveAbstractState.apply(DisjunctiveAbstractState.java:340) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.algorithm.FixpointEngine.calculateAbstractPost(FixpointEngine.java:249) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.algorithm.FixpointEngine.calculateFixpoint(FixpointEngine.java:134) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.algorithm.FixpointEngine.run(FixpointEngine.java:105) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.tool.AbstractInterpreter.runWithoutTimeoutAndResults(AbstractInterpreter.java:149) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarAbsIntRunner.generateFixpoints(CegarAbsIntRunner.java:217) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseTaipanRefinementStrategy.constructInterpolantGenerator(BaseTaipanRefinementStrategy.java:379) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseTaipanRefinementStrategy.getInterpolantGenerator(BaseTaipanRefinementStrategy.java:224) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.extractInterpolants(BaseRefinementStrategy.java:380) ... 20 more [2018-11-18 09:48:16,845 INFO L168 Benchmark]: Toolchain (without parser) took 6223.59 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 220.2 MB). Free memory was 952.2 MB in the beginning and 1.1 GB in the end (delta: -148.7 MB). Peak memory consumption was 71.5 MB. Max. memory is 11.5 GB. [2018-11-18 09:48:16,846 INFO L168 Benchmark]: CDTParser took 0.54 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. [2018-11-18 09:48:16,846 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1553.40 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 220.2 MB). Free memory was 952.2 MB in the beginning and 1.1 GB in the end (delta: -195.8 MB). Peak memory consumption was 244.6 MB. Max. memory is 11.5 GB. [2018-11-18 09:48:16,847 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.40 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 09:48:16,847 INFO L168 Benchmark]: Boogie Preprocessor took 77.26 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 11.5 GB. [2018-11-18 09:48:16,848 INFO L168 Benchmark]: RCFGBuilder took 2170.18 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 959.2 MB in the end (delta: 178.5 MB). Peak memory consumption was 178.5 MB. Max. memory is 11.5 GB. [2018-11-18 09:48:16,848 INFO L168 Benchmark]: TraceAbstraction took 2381.31 ms. Allocated memory is still 1.2 GB. Free memory was 959.2 MB in the beginning and 1.1 GB in the end (delta: -141.7 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 09:48:16,850 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.54 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 1553.40 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 220.2 MB). Free memory was 952.2 MB in the beginning and 1.1 GB in the end (delta: -195.8 MB). Peak memory consumption was 244.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 38.40 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 77.26 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 11.5 GB. * RCFGBuilder took 2170.18 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 959.2 MB in the end (delta: 178.5 MB). Peak memory consumption was 178.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2381.31 ms. Allocated memory is still 1.2 GB. Free memory was 959.2 MB in the beginning and 1.1 GB in the end (delta: -141.7 MB). There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: java.lang.IllegalArgumentException: unknown symbol (const Int (Array Int Int)) de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: java.lang.IllegalArgumentException: unknown symbol (const Int (Array Int Int)): de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.extractInterpolants(BaseRefinementStrategy.java:391) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.23-5842f4b [2018-11-18 09:48:18,297 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 09:48:18,298 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 09:48:18,307 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 09:48:18,307 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 09:48:18,308 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 09:48:18,309 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 09:48:18,310 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 09:48:18,311 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 09:48:18,312 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 09:48:18,313 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 09:48:18,313 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 09:48:18,313 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 09:48:18,314 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 09:48:18,315 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 09:48:18,316 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 09:48:18,317 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 09:48:18,318 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 09:48:18,320 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 09:48:18,321 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 09:48:18,322 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 09:48:18,323 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 09:48:18,324 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 09:48:18,324 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 09:48:18,324 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 09:48:18,325 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 09:48:18,326 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 09:48:18,326 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 09:48:18,328 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 09:48:18,328 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 09:48:18,329 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 09:48:18,329 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 09:48:18,329 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 09:48:18,329 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 09:48:18,330 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 09:48:18,330 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 09:48:18,331 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_da512a03-716e-411f-bdc1-95d025c58b60/bin-2019/utaipan/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2018-11-18 09:48:18,342 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 09:48:18,342 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 09:48:18,343 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 09:48:18,343 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 09:48:18,343 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 09:48:18,343 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 09:48:18,344 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 09:48:18,344 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 09:48:18,344 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 09:48:18,344 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 09:48:18,345 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 09:48:18,345 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 09:48:18,345 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 09:48:18,345 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 09:48:18,345 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 09:48:18,345 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-18 09:48:18,345 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-18 09:48:18,346 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 09:48:18,346 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 09:48:18,346 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 09:48:18,346 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 09:48:18,346 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 09:48:18,346 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 09:48:18,347 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 09:48:18,347 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 09:48:18,347 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 09:48:18,347 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 09:48:18,349 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 09:48:18,349 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-11-18 09:48:18,349 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 09:48:18,349 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-18 09:48:18,349 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-18 09:48:18,350 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_da512a03-716e-411f-bdc1-95d025c58b60/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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c8baf6dc591fb50b813986556c788bf1c702adbf [2018-11-18 09:48:18,378 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 09:48:18,388 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 09:48:18,391 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 09:48:18,392 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 09:48:18,392 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 09:48:18,393 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_da512a03-716e-411f-bdc1-95d025c58b60/bin-2019/utaipan/../../sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--rfc1201.ko-entry_point_false-unreach-call.cil.out.c [2018-11-18 09:48:18,429 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_da512a03-716e-411f-bdc1-95d025c58b60/bin-2019/utaipan/data/d56c4617c/ec243b6c748247bd8def750336303795/FLAG9d726cbc8 [2018-11-18 09:48:18,981 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 09:48:18,982 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_da512a03-716e-411f-bdc1-95d025c58b60/sv-benchmarks/c/ldv-linux-3.16-rc1/205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--rfc1201.ko-entry_point_false-unreach-call.cil.out.c [2018-11-18 09:48:19,000 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_da512a03-716e-411f-bdc1-95d025c58b60/bin-2019/utaipan/data/d56c4617c/ec243b6c748247bd8def750336303795/FLAG9d726cbc8 [2018-11-18 09:48:19,411 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_da512a03-716e-411f-bdc1-95d025c58b60/bin-2019/utaipan/data/d56c4617c/ec243b6c748247bd8def750336303795 [2018-11-18 09:48:19,414 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 09:48:19,415 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 09:48:19,415 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 09:48:19,415 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 09:48:19,418 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 09:48:19,418 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:48:19" (1/1) ... [2018-11-18 09:48:19,420 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e03c485 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:48:19, skipping insertion in model container [2018-11-18 09:48:19,420 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 09:48:19" (1/1) ... [2018-11-18 09:48:19,426 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 09:48:19,486 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 09:48:20,593 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 09:48:20,624 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 09:48:20,975 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 09:48:21,014 INFO L195 MainTranslator]: Completed translation [2018-11-18 09:48:21,014 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:48:21 WrapperNode [2018-11-18 09:48:21,014 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 09:48:21,015 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 09:48:21,015 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 09:48:21,015 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 09:48:21,020 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:48:21" (1/1) ... [2018-11-18 09:48:21,047 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:48:21" (1/1) ... [2018-11-18 09:48:21,057 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 09:48:21,057 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 09:48:21,057 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 09:48:21,057 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 09:48:21,063 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:48:21" (1/1) ... [2018-11-18 09:48:21,063 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:48:21" (1/1) ... [2018-11-18 09:48:21,074 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:48:21" (1/1) ... [2018-11-18 09:48:21,074 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:48:21" (1/1) ... [2018-11-18 09:48:21,127 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:48:21" (1/1) ... [2018-11-18 09:48:21,135 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:48:21" (1/1) ... [2018-11-18 09:48:21,145 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:48:21" (1/1) ... [2018-11-18 09:48:21,155 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 09:48:21,156 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 09:48:21,156 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 09:48:21,156 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 09:48:21,157 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:48:21" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_da512a03-716e-411f-bdc1-95d025c58b60/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 [2018-11-18 09:48:21,203 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netif_rx_15 [2018-11-18 09:48:21,203 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netif_rx_15 [2018-11-18 09:48:21,204 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_free_int [2018-11-18 09:48:21,204 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_free_int [2018-11-18 09:48:21,204 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_netif_rx_13 [2018-11-18 09:48:21,204 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_netif_rx_13 [2018-11-18 09:48:21,204 INFO L130 BoogieDeclarations]: Found specification of procedure load_pkt [2018-11-18 09:48:21,204 INFO L138 BoogieDeclarations]: Found implementation of procedure load_pkt [2018-11-18 09:48:21,204 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2018-11-18 09:48:21,204 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize_ArcProto_1 [2018-11-18 09:48:21,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize_ArcProto_1 [2018-11-18 09:48:21,205 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 09:48:21,205 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 09:48:21,205 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-11-18 09:48:21,205 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_init [2018-11-18 09:48:21,206 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_init [2018-11-18 09:48:21,206 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2018-11-18 09:48:21,206 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 09:48:21,206 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-11-18 09:48:21,206 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2018-11-18 09:48:21,207 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_add [2018-11-18 09:48:21,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_add [2018-11-18 09:48:21,207 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2018-11-18 09:48:21,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2018-11-18 09:48:21,207 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2018-11-18 09:48:21,207 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_initialize [2018-11-18 09:48:21,207 INFO L130 BoogieDeclarations]: Found specification of procedure prepare_tx [2018-11-18 09:48:21,207 INFO L138 BoogieDeclarations]: Found implementation of procedure prepare_tx [2018-11-18 09:48:21,207 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2018-11-18 09:48:21,208 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2018-11-18 09:48:21,208 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-11-18 09:48:21,208 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_is_empty [2018-11-18 09:48:21,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_is_empty [2018-11-18 09:48:21,208 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_set_remove [2018-11-18 09:48:21,208 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_set_remove [2018-11-18 09:48:21,208 INFO L130 BoogieDeclarations]: Found specification of procedure skb_push [2018-11-18 09:48:21,208 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2018-11-18 09:48:21,209 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2018-11-18 09:48:21,209 INFO L130 BoogieDeclarations]: Found specification of procedure arcnet_unregister_proto [2018-11-18 09:48:21,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE8 [2018-11-18 09:48:21,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2018-11-18 09:48:21,209 INFO L130 BoogieDeclarations]: Found specification of procedure arcnet_rfc1201_exit [2018-11-18 09:48:21,209 INFO L138 BoogieDeclarations]: Found implementation of procedure arcnet_rfc1201_exit [2018-11-18 09:48:21,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE2 [2018-11-18 09:48:21,209 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_alloc_skb_12 [2018-11-18 09:48:21,210 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_alloc_skb_12 [2018-11-18 09:48:21,210 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 09:48:21,210 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-11-18 09:48:21,210 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~C_INT~X~C_INT~X~$Pointer$~X~C_INT~TO~VOID [2018-11-18 09:48:21,210 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~C_INT~X~C_INT~X~$Pointer$~X~C_INT~TO~VOID [2018-11-18 09:48:21,210 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_skb_alloc [2018-11-18 09:48:21,210 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_skb_alloc [2018-11-18 09:48:21,210 INFO L130 BoogieDeclarations]: Found specification of procedure rx [2018-11-18 09:48:21,210 INFO L138 BoogieDeclarations]: Found implementation of procedure rx [2018-11-18 09:48:21,211 INFO L130 BoogieDeclarations]: Found specification of procedure type_trans [2018-11-18 09:48:21,211 INFO L138 BoogieDeclarations]: Found implementation of procedure type_trans [2018-11-18 09:48:21,211 INFO L130 BoogieDeclarations]: Found specification of procedure skb_put [2018-11-18 09:48:21,211 INFO L130 BoogieDeclarations]: Found specification of procedure arcnet_rfc1201_init [2018-11-18 09:48:21,213 INFO L138 BoogieDeclarations]: Found implementation of procedure arcnet_rfc1201_init [2018-11-18 09:48:21,213 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2018-11-18 09:48:21,213 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2018-11-18 09:48:21,214 INFO L130 BoogieDeclarations]: Found specification of procedure skb_pull [2018-11-18 09:48:21,214 INFO L130 BoogieDeclarations]: Found specification of procedure __fswab16 [2018-11-18 09:48:21,214 INFO L138 BoogieDeclarations]: Found implementation of procedure __fswab16 [2018-11-18 09:48:21,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2018-11-18 09:48:21,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2018-11-18 09:48:21,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2018-11-18 09:48:21,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2018-11-18 09:48:21,214 INFO L130 BoogieDeclarations]: Found specification of procedure continue_tx [2018-11-18 09:48:21,215 INFO L138 BoogieDeclarations]: Found implementation of procedure continue_tx [2018-11-18 09:48:21,215 INFO L130 BoogieDeclarations]: Found specification of procedure netdev_priv [2018-11-18 09:48:21,215 INFO L138 BoogieDeclarations]: Found implementation of procedure netdev_priv [2018-11-18 09:48:21,215 INFO L130 BoogieDeclarations]: Found specification of procedure build_header [2018-11-18 09:48:21,215 INFO L138 BoogieDeclarations]: Found implementation of procedure build_header [2018-11-18 09:48:21,215 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2018-11-18 09:48:21,215 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2018-11-18 09:48:21,215 INFO L130 BoogieDeclarations]: Found specification of procedure skb_reset_mac_header [2018-11-18 09:48:21,216 INFO L138 BoogieDeclarations]: Found implementation of procedure skb_reset_mac_header [2018-11-18 09:48:21,216 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 09:48:21,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 09:48:21,216 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2018-11-18 09:48:21,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2018-11-18 09:48:21,216 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2018-11-18 09:48:21,216 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2018-11-18 09:48:21,216 INFO L130 BoogieDeclarations]: Found specification of procedure __dev_kfree_skb_irq [2018-11-18 09:48:21,216 INFO L130 BoogieDeclarations]: Found specification of procedure dev_kfree_skb_irq [2018-11-18 09:48:21,217 INFO L138 BoogieDeclarations]: Found implementation of procedure dev_kfree_skb_irq [2018-11-18 09:48:21,217 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 09:48:21,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 09:48:27,816 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 09:48:27,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:48:27 BoogieIcfgContainer [2018-11-18 09:48:27,816 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 09:48:27,817 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 09:48:27,817 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 09:48:27,820 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 09:48:27,820 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 09:48:19" (1/3) ... [2018-11-18 09:48:27,820 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b8a290a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:48:27, skipping insertion in model container [2018-11-18 09:48:27,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 09:48:21" (2/3) ... [2018-11-18 09:48:27,821 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b8a290a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 09:48:27, skipping insertion in model container [2018-11-18 09:48:27,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 09:48:27" (3/3) ... [2018-11-18 09:48:27,823 INFO L112 eAbstractionObserver]: Analyzing ICFG 205_9a_array_unsafes_linux-3.16-rc1.tar.xz-205_9a-drivers--net--arcnet--rfc1201.ko-entry_point_false-unreach-call.cil.out.c [2018-11-18 09:48:27,829 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 09:48:27,835 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 09:48:27,844 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 09:48:27,866 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 09:48:27,866 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 09:48:27,866 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 09:48:27,866 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 09:48:27,866 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 09:48:27,867 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 09:48:27,867 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 09:48:27,867 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 09:48:27,867 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 09:48:27,884 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states. [2018-11-18 09:48:27,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2018-11-18 09:48:27,890 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:48:27,890 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:48:27,892 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:48:27,895 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:48:27,895 INFO L82 PathProgramCache]: Analyzing trace with hash -827364210, now seen corresponding path program 1 times [2018-11-18 09:48:27,899 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 09:48:27,900 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_da512a03-716e-411f-bdc1-95d025c58b60/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 [2018-11-18 09:48:27,925 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:48:28,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:48:28,066 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:48:28,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:48:28,091 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 09:48:28,097 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 09:48:28,097 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 09:48:28,100 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 09:48:28,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 09:48:28,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 09:48:28,109 INFO L87 Difference]: Start difference. First operand 347 states. Second operand 3 states. [2018-11-18 09:48:30,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:48:30,272 INFO L93 Difference]: Finished difference Result 952 states and 1339 transitions. [2018-11-18 09:48:30,272 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 09:48:30,273 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 46 [2018-11-18 09:48:30,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:48:30,288 INFO L225 Difference]: With dead ends: 952 [2018-11-18 09:48:30,288 INFO L226 Difference]: Without dead ends: 543 [2018-11-18 09:48:30,293 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 09:48:30,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 543 states. [2018-11-18 09:48:30,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 543 to 543. [2018-11-18 09:48:30,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 543 states. [2018-11-18 09:48:30,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 707 transitions. [2018-11-18 09:48:30,367 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 707 transitions. Word has length 46 [2018-11-18 09:48:30,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:48:30,367 INFO L480 AbstractCegarLoop]: Abstraction has 543 states and 707 transitions. [2018-11-18 09:48:30,367 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 09:48:30,367 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 707 transitions. [2018-11-18 09:48:30,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2018-11-18 09:48:30,370 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:48:30,370 INFO L375 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:48:30,370 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:48:30,370 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:48:30,370 INFO L82 PathProgramCache]: Analyzing trace with hash 1688245278, now seen corresponding path program 1 times [2018-11-18 09:48:30,371 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 09:48:30,371 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_da512a03-716e-411f-bdc1-95d025c58b60/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 [2018-11-18 09:48:30,397 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:48:30,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:48:30,542 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:48:30,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 09:48:30,560 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 09:48:30,562 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 09:48:30,563 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-18 09:48:30,564 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 09:48:30,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 09:48:30,564 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-18 09:48:30,564 INFO L87 Difference]: Start difference. First operand 543 states and 707 transitions. Second operand 5 states. [2018-11-18 09:48:30,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:48:30,655 INFO L93 Difference]: Finished difference Result 1064 states and 1389 transitions. [2018-11-18 09:48:30,655 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 09:48:30,655 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 51 [2018-11-18 09:48:30,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:48:30,659 INFO L225 Difference]: With dead ends: 1064 [2018-11-18 09:48:30,659 INFO L226 Difference]: Without dead ends: 542 [2018-11-18 09:48:30,661 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2018-11-18 09:48:30,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 542 states. [2018-11-18 09:48:30,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 542 to 542. [2018-11-18 09:48:30,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 542 states. [2018-11-18 09:48:30,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 703 transitions. [2018-11-18 09:48:30,686 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 703 transitions. Word has length 51 [2018-11-18 09:48:30,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:48:30,686 INFO L480 AbstractCegarLoop]: Abstraction has 542 states and 703 transitions. [2018-11-18 09:48:30,687 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 09:48:30,687 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 703 transitions. [2018-11-18 09:48:30,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2018-11-18 09:48:30,690 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:48:30,690 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:48:30,690 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:48:30,690 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:48:30,691 INFO L82 PathProgramCache]: Analyzing trace with hash -1542492788, now seen corresponding path program 1 times [2018-11-18 09:48:30,691 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 09:48:30,691 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_da512a03-716e-411f-bdc1-95d025c58b60/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 [2018-11-18 09:48:30,723 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:48:30,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:48:30,838 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:48:30,887 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2018-11-18 09:48:30,887 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 09:48:30,889 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 09:48:30,889 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-18 09:48:30,889 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-18 09:48:30,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-18 09:48:30,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-11-18 09:48:30,889 INFO L87 Difference]: Start difference. First operand 542 states and 703 transitions. Second operand 6 states. [2018-11-18 09:48:33,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:48:33,353 INFO L93 Difference]: Finished difference Result 1581 states and 2091 transitions. [2018-11-18 09:48:33,353 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-11-18 09:48:33,354 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 78 [2018-11-18 09:48:33,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:48:33,360 INFO L225 Difference]: With dead ends: 1581 [2018-11-18 09:48:33,361 INFO L226 Difference]: Without dead ends: 1047 [2018-11-18 09:48:33,362 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-11-18 09:48:33,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1047 states. [2018-11-18 09:48:33,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1047 to 1037. [2018-11-18 09:48:33,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1037 states. [2018-11-18 09:48:33,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1037 states to 1037 states and 1373 transitions. [2018-11-18 09:48:33,407 INFO L78 Accepts]: Start accepts. Automaton has 1037 states and 1373 transitions. Word has length 78 [2018-11-18 09:48:33,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:48:33,408 INFO L480 AbstractCegarLoop]: Abstraction has 1037 states and 1373 transitions. [2018-11-18 09:48:33,408 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-18 09:48:33,408 INFO L276 IsEmpty]: Start isEmpty. Operand 1037 states and 1373 transitions. [2018-11-18 09:48:33,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-11-18 09:48:33,413 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:48:33,414 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:48:33,414 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:48:33,414 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:48:33,414 INFO L82 PathProgramCache]: Analyzing trace with hash -1216408561, now seen corresponding path program 1 times [2018-11-18 09:48:33,415 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 09:48:33,415 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_da512a03-716e-411f-bdc1-95d025c58b60/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 [2018-11-18 09:48:33,442 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:48:33,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:48:33,646 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:48:33,664 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2018-11-18 09:48:33,664 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 09:48:33,666 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 09:48:33,666 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 09:48:33,667 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 09:48:33,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 09:48:33,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 09:48:33,667 INFO L87 Difference]: Start difference. First operand 1037 states and 1373 transitions. Second operand 3 states. [2018-11-18 09:48:33,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:48:33,738 INFO L93 Difference]: Finished difference Result 1650 states and 2179 transitions. [2018-11-18 09:48:33,738 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 09:48:33,738 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 150 [2018-11-18 09:48:33,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:48:33,741 INFO L225 Difference]: With dead ends: 1650 [2018-11-18 09:48:33,741 INFO L226 Difference]: Without dead ends: 634 [2018-11-18 09:48:33,742 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 09:48:33,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2018-11-18 09:48:33,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 602. [2018-11-18 09:48:33,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 602 states. [2018-11-18 09:48:33,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 793 transitions. [2018-11-18 09:48:33,761 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 793 transitions. Word has length 150 [2018-11-18 09:48:33,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:48:33,761 INFO L480 AbstractCegarLoop]: Abstraction has 602 states and 793 transitions. [2018-11-18 09:48:33,761 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 09:48:33,761 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 793 transitions. [2018-11-18 09:48:33,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2018-11-18 09:48:33,764 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:48:33,764 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:48:33,765 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:48:33,765 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:48:33,765 INFO L82 PathProgramCache]: Analyzing trace with hash 640750095, now seen corresponding path program 2 times [2018-11-18 09:48:33,766 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 09:48:33,766 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_da512a03-716e-411f-bdc1-95d025c58b60/bin-2019/utaipan/cvc4nyu Starting monitored process 6 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 6 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 09:48:33,787 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2018-11-18 09:48:34,033 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2018-11-18 09:48:34,034 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 09:48:34,136 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:48:34,241 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2018-11-18 09:48:34,241 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 09:48:34,244 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 09:48:34,245 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-11-18 09:48:34,245 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-18 09:48:34,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-18 09:48:34,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2018-11-18 09:48:34,245 INFO L87 Difference]: Start difference. First operand 602 states and 793 transitions. Second operand 10 states. [2018-11-18 09:48:35,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:48:35,488 INFO L93 Difference]: Finished difference Result 1185 states and 1581 transitions. [2018-11-18 09:48:35,489 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-18 09:48:35,489 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 150 [2018-11-18 09:48:35,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:48:35,492 INFO L225 Difference]: With dead ends: 1185 [2018-11-18 09:48:35,492 INFO L226 Difference]: Without dead ends: 622 [2018-11-18 09:48:35,493 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2018-11-18 09:48:35,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2018-11-18 09:48:35,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 620. [2018-11-18 09:48:35,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 620 states. [2018-11-18 09:48:35,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 815 transitions. [2018-11-18 09:48:35,512 INFO L78 Accepts]: Start accepts. Automaton has 620 states and 815 transitions. Word has length 150 [2018-11-18 09:48:35,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:48:35,513 INFO L480 AbstractCegarLoop]: Abstraction has 620 states and 815 transitions. [2018-11-18 09:48:35,513 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-18 09:48:35,513 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 815 transitions. [2018-11-18 09:48:35,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2018-11-18 09:48:35,515 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:48:35,515 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:48:35,516 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:48:35,516 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:48:35,516 INFO L82 PathProgramCache]: Analyzing trace with hash 97490227, now seen corresponding path program 1 times [2018-11-18 09:48:35,516 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 09:48:35,517 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_da512a03-716e-411f-bdc1-95d025c58b60/bin-2019/utaipan/cvc4nyu Starting monitored process 7 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 7 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 09:48:35,534 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 09:48:35,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:48:36,017 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:48:36,045 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2018-11-18 09:48:36,046 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 09:48:36,049 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 09:48:36,049 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 09:48:36,049 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 09:48:36,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 09:48:36,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 09:48:36,050 INFO L87 Difference]: Start difference. First operand 620 states and 815 transitions. Second operand 4 states. [2018-11-18 09:48:36,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:48:36,099 INFO L93 Difference]: Finished difference Result 1214 states and 1603 transitions. [2018-11-18 09:48:36,100 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 09:48:36,100 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 155 [2018-11-18 09:48:36,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:48:36,102 INFO L225 Difference]: With dead ends: 1214 [2018-11-18 09:48:36,102 INFO L226 Difference]: Without dead ends: 621 [2018-11-18 09:48:36,103 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-11-18 09:48:36,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2018-11-18 09:48:36,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 621. [2018-11-18 09:48:36,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 621 states. [2018-11-18 09:48:36,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 816 transitions. [2018-11-18 09:48:36,118 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 816 transitions. Word has length 155 [2018-11-18 09:48:36,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:48:36,119 INFO L480 AbstractCegarLoop]: Abstraction has 621 states and 816 transitions. [2018-11-18 09:48:36,119 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 09:48:36,119 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 816 transitions. [2018-11-18 09:48:36,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-11-18 09:48:36,121 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:48:36,121 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:48:36,121 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:48:36,121 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:48:36,121 INFO L82 PathProgramCache]: Analyzing trace with hash 1872462627, now seen corresponding path program 1 times [2018-11-18 09:48:36,122 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 09:48:36,122 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_da512a03-716e-411f-bdc1-95d025c58b60/bin-2019/utaipan/cvc4nyu Starting monitored process 8 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 8 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 09:48:36,146 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:48:36,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:48:36,637 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:48:36,656 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2018-11-18 09:48:36,656 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 09:48:36,660 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 09:48:36,660 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 09:48:36,660 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 09:48:36,660 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 09:48:36,660 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 09:48:36,661 INFO L87 Difference]: Start difference. First operand 621 states and 816 transitions. Second operand 3 states. [2018-11-18 09:48:36,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:48:36,681 INFO L93 Difference]: Finished difference Result 1214 states and 1609 transitions. [2018-11-18 09:48:36,681 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 09:48:36,681 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 156 [2018-11-18 09:48:36,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:48:36,683 INFO L225 Difference]: With dead ends: 1214 [2018-11-18 09:48:36,684 INFO L226 Difference]: Without dead ends: 637 [2018-11-18 09:48:36,685 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 09:48:36,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2018-11-18 09:48:36,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 617. [2018-11-18 09:48:36,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 617 states. [2018-11-18 09:48:36,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 808 transitions. [2018-11-18 09:48:36,700 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 808 transitions. Word has length 156 [2018-11-18 09:48:36,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:48:36,701 INFO L480 AbstractCegarLoop]: Abstraction has 617 states and 808 transitions. [2018-11-18 09:48:36,701 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 09:48:36,701 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 808 transitions. [2018-11-18 09:48:36,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2018-11-18 09:48:36,703 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:48:36,703 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:48:36,704 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:48:36,704 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:48:36,704 INFO L82 PathProgramCache]: Analyzing trace with hash -941420121, now seen corresponding path program 1 times [2018-11-18 09:48:36,705 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 09:48:36,705 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_da512a03-716e-411f-bdc1-95d025c58b60/bin-2019/utaipan/cvc4nyu Starting monitored process 9 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 9 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 09:48:36,726 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:48:37,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:48:37,231 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:48:37,271 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2018-11-18 09:48:37,271 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 09:48:37,275 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 09:48:37,276 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-18 09:48:37,276 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 09:48:37,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 09:48:37,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-18 09:48:37,276 INFO L87 Difference]: Start difference. First operand 617 states and 808 transitions. Second operand 5 states. [2018-11-18 09:48:37,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:48:37,395 INFO L93 Difference]: Finished difference Result 1216 states and 1611 transitions. [2018-11-18 09:48:37,396 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 09:48:37,396 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2018-11-18 09:48:37,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:48:37,399 INFO L225 Difference]: With dead ends: 1216 [2018-11-18 09:48:37,399 INFO L226 Difference]: Without dead ends: 643 [2018-11-18 09:48:37,401 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-18 09:48:37,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2018-11-18 09:48:37,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 623. [2018-11-18 09:48:37,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 623 states. [2018-11-18 09:48:37,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 623 states to 623 states and 818 transitions. [2018-11-18 09:48:37,423 INFO L78 Accepts]: Start accepts. Automaton has 623 states and 818 transitions. Word has length 156 [2018-11-18 09:48:37,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:48:37,424 INFO L480 AbstractCegarLoop]: Abstraction has 623 states and 818 transitions. [2018-11-18 09:48:37,424 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 09:48:37,424 INFO L276 IsEmpty]: Start isEmpty. Operand 623 states and 818 transitions. [2018-11-18 09:48:37,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2018-11-18 09:48:37,427 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:48:37,427 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:48:37,427 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:48:37,427 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:48:37,429 INFO L82 PathProgramCache]: Analyzing trace with hash 808856851, now seen corresponding path program 1 times [2018-11-18 09:48:37,430 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 09:48:37,430 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_da512a03-716e-411f-bdc1-95d025c58b60/bin-2019/utaipan/cvc4nyu Starting monitored process 10 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 10 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 09:48:37,461 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:48:37,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:48:37,991 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:48:38,038 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2018-11-18 09:48:38,039 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 09:48:38,231 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2018-11-18 09:48:38,239 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 09:48:38,239 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_da512a03-716e-411f-bdc1-95d025c58b60/bin-2019/utaipan/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 09:48:38,254 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:48:38,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:48:38,453 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:48:38,492 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2018-11-18 09:48:38,493 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 09:48:38,730 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2018-11-18 09:48:38,748 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-11-18 09:48:38,749 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6] total 9 [2018-11-18 09:48:38,749 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-18 09:48:38,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-18 09:48:38,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2018-11-18 09:48:38,750 INFO L87 Difference]: Start difference. First operand 623 states and 818 transitions. Second operand 9 states. [2018-11-18 09:48:38,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:48:38,933 INFO L93 Difference]: Finished difference Result 1228 states and 1631 transitions. [2018-11-18 09:48:38,933 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-18 09:48:38,933 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 157 [2018-11-18 09:48:38,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:48:38,935 INFO L225 Difference]: With dead ends: 1228 [2018-11-18 09:48:38,935 INFO L226 Difference]: Without dead ends: 649 [2018-11-18 09:48:38,937 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 628 GetRequests, 619 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2018-11-18 09:48:38,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2018-11-18 09:48:38,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 625. [2018-11-18 09:48:38,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 625 states. [2018-11-18 09:48:38,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 625 states to 625 states and 822 transitions. [2018-11-18 09:48:38,951 INFO L78 Accepts]: Start accepts. Automaton has 625 states and 822 transitions. Word has length 157 [2018-11-18 09:48:38,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:48:38,952 INFO L480 AbstractCegarLoop]: Abstraction has 625 states and 822 transitions. [2018-11-18 09:48:38,952 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-18 09:48:38,952 INFO L276 IsEmpty]: Start isEmpty. Operand 625 states and 822 transitions. [2018-11-18 09:48:38,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2018-11-18 09:48:38,954 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:48:38,954 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:48:38,954 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:48:38,954 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:48:38,954 INFO L82 PathProgramCache]: Analyzing trace with hash -767131865, now seen corresponding path program 2 times [2018-11-18 09:48:38,955 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 09:48:38,955 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_da512a03-716e-411f-bdc1-95d025c58b60/bin-2019/utaipan/cvc4nyu Starting monitored process 12 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 12 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 09:48:38,972 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2018-11-18 09:48:41,748 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 09:48:41,748 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 09:48:41,931 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:48:41,965 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2018-11-18 09:48:41,965 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 09:48:42,134 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2018-11-18 09:48:42,140 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 09:48:42,140 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_da512a03-716e-411f-bdc1-95d025c58b60/bin-2019/utaipan/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 09:48:42,148 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-18 09:48:54,287 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 09:48:54,287 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 09:48:54,306 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:48:54,319 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2018-11-18 09:48:54,320 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 09:48:54,433 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2018-11-18 09:48:54,471 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-11-18 09:48:54,472 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7] total 11 [2018-11-18 09:48:54,472 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-18 09:48:54,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-18 09:48:54,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2018-11-18 09:48:54,473 INFO L87 Difference]: Start difference. First operand 625 states and 822 transitions. Second operand 11 states. [2018-11-18 09:48:54,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:48:54,743 INFO L93 Difference]: Finished difference Result 1236 states and 1645 transitions. [2018-11-18 09:48:54,744 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-18 09:48:54,744 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 158 [2018-11-18 09:48:54,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:48:54,747 INFO L225 Difference]: With dead ends: 1236 [2018-11-18 09:48:54,747 INFO L226 Difference]: Without dead ends: 655 [2018-11-18 09:48:54,749 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 633 GetRequests, 621 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2018-11-18 09:48:54,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 655 states. [2018-11-18 09:48:54,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 655 to 627. [2018-11-18 09:48:54,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 627 states. [2018-11-18 09:48:54,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 627 states to 627 states and 826 transitions. [2018-11-18 09:48:54,770 INFO L78 Accepts]: Start accepts. Automaton has 627 states and 826 transitions. Word has length 158 [2018-11-18 09:48:54,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:48:54,770 INFO L480 AbstractCegarLoop]: Abstraction has 627 states and 826 transitions. [2018-11-18 09:48:54,770 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-18 09:48:54,770 INFO L276 IsEmpty]: Start isEmpty. Operand 627 states and 826 transitions. [2018-11-18 09:48:54,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2018-11-18 09:48:54,772 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:48:54,772 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:48:54,773 INFO L423 AbstractCegarLoop]: === Iteration 11 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:48:54,773 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:48:54,773 INFO L82 PathProgramCache]: Analyzing trace with hash 1916825491, now seen corresponding path program 3 times [2018-11-18 09:48:54,774 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 09:48:54,774 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_da512a03-716e-411f-bdc1-95d025c58b60/bin-2019/utaipan/cvc4nyu Starting monitored process 14 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 14 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 09:48:54,797 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2018-11-18 09:48:58,364 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2018-11-18 09:48:58,364 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 09:48:58,604 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:48:58,721 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2018-11-18 09:48:58,726 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 13 [2018-11-18 09:48:58,726 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-18 09:48:58,733 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-18 09:48:58,757 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-18 09:48:58,757 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:27, output treesize:23 [2018-11-18 09:48:59,079 WARN L180 SmtUtils]: Spent 145.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2018-11-18 09:48:59,199 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 51 treesize of output 47 [2018-11-18 09:48:59,207 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 47 treesize of output 21 [2018-11-18 09:48:59,207 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 09:48:59,216 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 09:48:59,243 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 34 [2018-11-18 09:48:59,248 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 8 [2018-11-18 09:48:59,248 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-18 09:48:59,253 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 09:48:59,262 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 09:48:59,262 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:73, output treesize:15 [2018-11-18 09:48:59,331 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-11-18 09:48:59,331 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 09:48:59,335 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 09:48:59,335 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2018-11-18 09:48:59,336 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-11-18 09:48:59,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-11-18 09:48:59,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2018-11-18 09:48:59,336 INFO L87 Difference]: Start difference. First operand 627 states and 826 transitions. Second operand 12 states. [2018-11-18 09:49:13,068 WARN L180 SmtUtils]: Spent 368.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2018-11-18 09:49:26,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:49:26,086 INFO L93 Difference]: Finished difference Result 1825 states and 2425 transitions. [2018-11-18 09:49:26,088 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-11-18 09:49:26,088 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 159 [2018-11-18 09:49:26,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:49:26,091 INFO L225 Difference]: With dead ends: 1825 [2018-11-18 09:49:26,092 INFO L226 Difference]: Without dead ends: 1240 [2018-11-18 09:49:26,093 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2018-11-18 09:49:26,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1240 states. [2018-11-18 09:49:26,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1240 to 1209. [2018-11-18 09:49:26,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1209 states. [2018-11-18 09:49:26,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1209 states to 1209 states and 1609 transitions. [2018-11-18 09:49:26,119 INFO L78 Accepts]: Start accepts. Automaton has 1209 states and 1609 transitions. Word has length 159 [2018-11-18 09:49:26,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:49:26,120 INFO L480 AbstractCegarLoop]: Abstraction has 1209 states and 1609 transitions. [2018-11-18 09:49:26,120 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-11-18 09:49:26,120 INFO L276 IsEmpty]: Start isEmpty. Operand 1209 states and 1609 transitions. [2018-11-18 09:49:26,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2018-11-18 09:49:26,122 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:49:26,122 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:49:26,123 INFO L423 AbstractCegarLoop]: === Iteration 12 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:49:26,123 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:49:26,123 INFO L82 PathProgramCache]: Analyzing trace with hash 858987413, now seen corresponding path program 1 times [2018-11-18 09:49:26,123 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 09:49:26,123 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_da512a03-716e-411f-bdc1-95d025c58b60/bin-2019/utaipan/cvc4nyu Starting monitored process 15 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 15 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 09:49:26,141 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 09:49:26,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:49:26,669 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:49:26,709 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2018-11-18 09:49:26,709 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 09:49:26,941 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2018-11-18 09:49:26,944 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 09:49:26,944 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_da512a03-716e-411f-bdc1-95d025c58b60/bin-2019/utaipan/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 09:49:26,956 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:49:27,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:49:27,130 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:49:27,176 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2018-11-18 09:49:27,176 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 09:49:27,462 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2018-11-18 09:49:27,481 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-11-18 09:49:27,481 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8] total 20 [2018-11-18 09:49:27,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-18 09:49:27,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-18 09:49:27,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2018-11-18 09:49:27,482 INFO L87 Difference]: Start difference. First operand 1209 states and 1609 transitions. Second operand 20 states. [2018-11-18 09:49:28,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:49:28,173 INFO L93 Difference]: Finished difference Result 2442 states and 3282 transitions. [2018-11-18 09:49:28,175 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-11-18 09:49:28,176 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 159 [2018-11-18 09:49:28,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:49:28,180 INFO L225 Difference]: With dead ends: 2442 [2018-11-18 09:49:28,180 INFO L226 Difference]: Without dead ends: 1277 [2018-11-18 09:49:28,183 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 638 GetRequests, 615 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=117, Invalid=435, Unknown=0, NotChecked=0, Total=552 [2018-11-18 09:49:28,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1277 states. [2018-11-18 09:49:28,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1277 to 1213. [2018-11-18 09:49:28,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1213 states. [2018-11-18 09:49:28,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1213 states to 1213 states and 1617 transitions. [2018-11-18 09:49:28,227 INFO L78 Accepts]: Start accepts. Automaton has 1213 states and 1617 transitions. Word has length 159 [2018-11-18 09:49:28,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:49:28,228 INFO L480 AbstractCegarLoop]: Abstraction has 1213 states and 1617 transitions. [2018-11-18 09:49:28,228 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-11-18 09:49:28,228 INFO L276 IsEmpty]: Start isEmpty. Operand 1213 states and 1617 transitions. [2018-11-18 09:49:28,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2018-11-18 09:49:28,231 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:49:28,231 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:49:28,231 INFO L423 AbstractCegarLoop]: === Iteration 13 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:49:28,232 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:49:28,232 INFO L82 PathProgramCache]: Analyzing trace with hash 1100157391, now seen corresponding path program 1 times [2018-11-18 09:49:28,232 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 09:49:28,232 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_da512a03-716e-411f-bdc1-95d025c58b60/bin-2019/utaipan/cvc4nyu Starting monitored process 17 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 17 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 09:49:28,256 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 09:49:28,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:49:28,420 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:49:28,437 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2018-11-18 09:49:28,437 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 09:49:28,439 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 09:49:28,439 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 09:49:28,439 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 09:49:28,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 09:49:28,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 09:49:28,440 INFO L87 Difference]: Start difference. First operand 1213 states and 1617 transitions. Second operand 3 states. [2018-11-18 09:49:28,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:49:28,461 INFO L93 Difference]: Finished difference Result 1823 states and 2449 transitions. [2018-11-18 09:49:28,461 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 09:49:28,461 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 151 [2018-11-18 09:49:28,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:49:28,464 INFO L225 Difference]: With dead ends: 1823 [2018-11-18 09:49:28,464 INFO L226 Difference]: Without dead ends: 1221 [2018-11-18 09:49:28,465 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 09:49:28,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1221 states. [2018-11-18 09:49:28,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1221 to 1221. [2018-11-18 09:49:28,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1221 states. [2018-11-18 09:49:28,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1221 states to 1221 states and 1625 transitions. [2018-11-18 09:49:28,491 INFO L78 Accepts]: Start accepts. Automaton has 1221 states and 1625 transitions. Word has length 151 [2018-11-18 09:49:28,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:49:28,491 INFO L480 AbstractCegarLoop]: Abstraction has 1221 states and 1625 transitions. [2018-11-18 09:49:28,491 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 09:49:28,491 INFO L276 IsEmpty]: Start isEmpty. Operand 1221 states and 1625 transitions. [2018-11-18 09:49:28,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2018-11-18 09:49:28,493 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:49:28,494 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:49:28,494 INFO L423 AbstractCegarLoop]: === Iteration 14 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:49:28,494 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:49:28,494 INFO L82 PathProgramCache]: Analyzing trace with hash 786915557, now seen corresponding path program 2 times [2018-11-18 09:49:28,495 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 09:49:28,495 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_da512a03-716e-411f-bdc1-95d025c58b60/bin-2019/utaipan/cvc4nyu Starting monitored process 18 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 18 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 09:49:28,517 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2018-11-18 09:49:31,163 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 09:49:31,163 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 09:49:31,357 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:49:31,425 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2018-11-18 09:49:31,425 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 09:49:31,704 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2018-11-18 09:49:31,709 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 09:49:31,709 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_da512a03-716e-411f-bdc1-95d025c58b60/bin-2019/utaipan/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 09:49:31,726 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-18 09:49:43,881 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 09:49:43,881 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 09:49:43,901 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:49:43,916 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2018-11-18 09:49:43,916 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 09:49:44,045 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 7 proven. 10 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2018-11-18 09:49:44,084 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-11-18 09:49:44,084 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9] total 15 [2018-11-18 09:49:44,085 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-11-18 09:49:44,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-11-18 09:49:44,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2018-11-18 09:49:44,085 INFO L87 Difference]: Start difference. First operand 1221 states and 1625 transitions. Second operand 15 states. [2018-11-18 09:49:44,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:49:44,616 INFO L93 Difference]: Finished difference Result 2474 states and 3326 transitions. [2018-11-18 09:49:44,620 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-18 09:49:44,620 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 160 [2018-11-18 09:49:44,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:49:44,623 INFO L225 Difference]: With dead ends: 2474 [2018-11-18 09:49:44,623 INFO L226 Difference]: Without dead ends: 1297 [2018-11-18 09:49:44,625 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 643 GetRequests, 625 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2018-11-18 09:49:44,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1297 states. [2018-11-18 09:49:44,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1297 to 1225. [2018-11-18 09:49:44,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1225 states. [2018-11-18 09:49:44,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1225 states to 1225 states and 1633 transitions. [2018-11-18 09:49:44,653 INFO L78 Accepts]: Start accepts. Automaton has 1225 states and 1633 transitions. Word has length 160 [2018-11-18 09:49:44,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:49:44,653 INFO L480 AbstractCegarLoop]: Abstraction has 1225 states and 1633 transitions. [2018-11-18 09:49:44,654 INFO L481 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-11-18 09:49:44,654 INFO L276 IsEmpty]: Start isEmpty. Operand 1225 states and 1633 transitions. [2018-11-18 09:49:44,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2018-11-18 09:49:44,656 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:49:44,656 INFO L375 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:49:44,656 INFO L423 AbstractCegarLoop]: === Iteration 15 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:49:44,656 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:49:44,657 INFO L82 PathProgramCache]: Analyzing trace with hash -1447311979, now seen corresponding path program 3 times [2018-11-18 09:49:44,657 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 09:49:44,657 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_da512a03-716e-411f-bdc1-95d025c58b60/bin-2019/utaipan/cvc4nyu Starting monitored process 20 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 20 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 09:49:44,684 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2018-11-18 09:53:40,946 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-11-18 09:53:40,946 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 09:53:41,151 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:53:41,217 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2018-11-18 09:53:41,217 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 09:53:41,550 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2018-11-18 09:53:41,565 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 09:53:41,565 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_da512a03-716e-411f-bdc1-95d025c58b60/bin-2019/utaipan/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 09:53:41,573 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-18 09:54:17,792 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-11-18 09:54:17,793 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 09:54:17,816 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:54:17,868 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2018-11-18 09:54:17,869 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 09:54:18,346 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2018-11-18 09:54:18,397 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-11-18 09:54:18,397 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10, 10] total 26 [2018-11-18 09:54:18,398 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2018-11-18 09:54:18,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2018-11-18 09:54:18,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=549, Unknown=0, NotChecked=0, Total=650 [2018-11-18 09:54:18,398 INFO L87 Difference]: Start difference. First operand 1225 states and 1633 transitions. Second operand 26 states. [2018-11-18 09:54:19,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:54:19,989 INFO L93 Difference]: Finished difference Result 2490 states and 3354 transitions. [2018-11-18 09:54:19,989 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-11-18 09:54:19,990 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 161 [2018-11-18 09:54:19,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:54:19,993 INFO L225 Difference]: With dead ends: 2490 [2018-11-18 09:54:19,993 INFO L226 Difference]: Without dead ends: 1309 [2018-11-18 09:54:19,994 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 648 GetRequests, 617 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=194, Invalid=798, Unknown=0, NotChecked=0, Total=992 [2018-11-18 09:54:19,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1309 states. [2018-11-18 09:54:20,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1309 to 1229. [2018-11-18 09:54:20,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1229 states. [2018-11-18 09:54:20,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1229 states to 1229 states and 1641 transitions. [2018-11-18 09:54:20,036 INFO L78 Accepts]: Start accepts. Automaton has 1229 states and 1641 transitions. Word has length 161 [2018-11-18 09:54:20,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:54:20,037 INFO L480 AbstractCegarLoop]: Abstraction has 1229 states and 1641 transitions. [2018-11-18 09:54:20,037 INFO L481 AbstractCegarLoop]: Interpolant automaton has 26 states. [2018-11-18 09:54:20,037 INFO L276 IsEmpty]: Start isEmpty. Operand 1229 states and 1641 transitions. [2018-11-18 09:54:20,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2018-11-18 09:54:20,040 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:54:20,040 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:54:20,041 INFO L423 AbstractCegarLoop]: === Iteration 16 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:54:20,041 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:54:20,041 INFO L82 PathProgramCache]: Analyzing trace with hash -2124836624, now seen corresponding path program 1 times [2018-11-18 09:54:20,041 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 09:54:20,041 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_da512a03-716e-411f-bdc1-95d025c58b60/bin-2019/utaipan/cvc4nyu Starting monitored process 22 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 22 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 09:54:20,065 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 09:54:20,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 09:54:20,541 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 09:54:20,600 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-18 09:54:20,600 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 09:54:20,603 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 09:54:20,603 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-18 09:54:20,603 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-18 09:54:20,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-18 09:54:20,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2018-11-18 09:54:20,604 INFO L87 Difference]: Start difference. First operand 1229 states and 1641 transitions. Second operand 6 states. [2018-11-18 09:54:26,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 09:54:26,787 INFO L93 Difference]: Finished difference Result 2738 states and 3708 transitions. [2018-11-18 09:54:26,788 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-18 09:54:26,788 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 153 [2018-11-18 09:54:26,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 09:54:26,791 INFO L225 Difference]: With dead ends: 2738 [2018-11-18 09:54:26,791 INFO L226 Difference]: Without dead ends: 1553 [2018-11-18 09:54:26,793 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2018-11-18 09:54:26,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1553 states. [2018-11-18 09:54:26,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1553 to 1496. [2018-11-18 09:54:26,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1496 states. [2018-11-18 09:54:26,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1496 states to 1496 states and 1995 transitions. [2018-11-18 09:54:26,833 INFO L78 Accepts]: Start accepts. Automaton has 1496 states and 1995 transitions. Word has length 153 [2018-11-18 09:54:26,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 09:54:26,834 INFO L480 AbstractCegarLoop]: Abstraction has 1496 states and 1995 transitions. [2018-11-18 09:54:26,834 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-18 09:54:26,834 INFO L276 IsEmpty]: Start isEmpty. Operand 1496 states and 1995 transitions. [2018-11-18 09:54:26,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2018-11-18 09:54:26,836 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 09:54:26,837 INFO L375 BasicCegarLoop]: trace histogram [6, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 09:54:26,837 INFO L423 AbstractCegarLoop]: === Iteration 17 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 09:54:26,837 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 09:54:26,837 INFO L82 PathProgramCache]: Analyzing trace with hash -1988888859, now seen corresponding path program 4 times [2018-11-18 09:54:26,838 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 09:54:26,838 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_da512a03-716e-411f-bdc1-95d025c58b60/bin-2019/utaipan/cvc4nyu Starting monitored process 23 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 23 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 09:54:26,858 INFO L101 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-18 09:54:27,108 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 09:54:27,109 FATAL L292 ToolchainWalker]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: ConstantTerm is neither BigInter nor BigDecimal, therefore comparison is not possible! at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.AnnotateAndAsserterWithStmtOrderPrioritization.termHasConstantGreaterThan(AnnotateAndAsserterWithStmtOrderPrioritization.java:358) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.AnnotateAndAsserterWithStmtOrderPrioritization.termHasConstantGreaterThan(AnnotateAndAsserterWithStmtOrderPrioritization.java:345) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.AnnotateAndAsserterWithStmtOrderPrioritization.termHasConstantGreaterThan(AnnotateAndAsserterWithStmtOrderPrioritization.java:345) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.AnnotateAndAsserterWithStmtOrderPrioritization.termHasConstantGreaterThan(AnnotateAndAsserterWithStmtOrderPrioritization.java:345) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.AnnotateAndAsserterWithStmtOrderPrioritization.termHasConstantGreaterThan(AnnotateAndAsserterWithStmtOrderPrioritization.java:345) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.AnnotateAndAsserterWithStmtOrderPrioritization.partitionStmtsAccordingToConstantSize(AnnotateAndAsserterWithStmtOrderPrioritization.java:377) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.AnnotateAndAsserterWithStmtOrderPrioritization.annotateAndAssertStmtsAccording5Heuristic(AnnotateAndAsserterWithStmtOrderPrioritization.java:391) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.AnnotateAndAsserterWithStmtOrderPrioritization.buildAnnotatedSsaAndAssertTerms(AnnotateAndAsserterWithStmtOrderPrioritization.java:245) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheck.checkTrace(TraceCheck.java:293) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheck.(TraceCheck.java:214) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:97) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:134) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructForwardBackward(TraceCheckConstructor.java:224) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructTraceCheck(TraceCheckConstructor.java:188) 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.MultiTrackRefinementStrategy.getTraceCheck(MultiTrackRefinementStrategy.java:232) 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:434) 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) [2018-11-18 09:54:27,111 INFO L168 Benchmark]: Toolchain (without parser) took 367696.87 ms. Allocated memory was 1.0 GB in the beginning and 1.6 GB in the end (delta: 547.4 MB). Free memory was 939.0 MB in the beginning and 1.1 GB in the end (delta: -140.6 MB). Peak memory consumption was 406.8 MB. Max. memory is 11.5 GB. [2018-11-18 09:54:27,111 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 09:54:27,112 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1599.11 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 268.4 MB). Free memory was 939.0 MB in the beginning and 891.3 MB in the end (delta: 47.7 MB). Peak memory consumption was 340.4 MB. Max. memory is 11.5 GB. [2018-11-18 09:54:27,112 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.19 ms. Allocated memory is still 1.3 GB. Free memory is still 891.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 09:54:27,112 INFO L168 Benchmark]: Boogie Preprocessor took 98.26 ms. Allocated memory is still 1.3 GB. Free memory was 891.3 MB in the beginning and 872.6 MB in the end (delta: 18.7 MB). Peak memory consumption was 18.7 MB. Max. memory is 11.5 GB. [2018-11-18 09:54:27,112 INFO L168 Benchmark]: RCFGBuilder took 6660.67 ms. Allocated memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 7.9 MB). Free memory was 872.6 MB in the beginning and 1.2 GB in the end (delta: -305.5 MB). Peak memory consumption was 136.8 MB. Max. memory is 11.5 GB. [2018-11-18 09:54:27,113 INFO L168 Benchmark]: TraceAbstraction took 359293.72 ms. Allocated memory was 1.3 GB in the beginning and 1.6 GB in the end (delta: 271.1 MB). Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 98.5 MB). Peak memory consumption was 369.5 MB. Max. memory is 11.5 GB. [2018-11-18 09:54:27,115 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 978.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 1599.11 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 268.4 MB). Free memory was 939.0 MB in the beginning and 891.3 MB in the end (delta: 47.7 MB). Peak memory consumption was 340.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 42.19 ms. Allocated memory is still 1.3 GB. Free memory is still 891.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 98.26 ms. Allocated memory is still 1.3 GB. Free memory was 891.3 MB in the beginning and 872.6 MB in the end (delta: 18.7 MB). Peak memory consumption was 18.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 6660.67 ms. Allocated memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 7.9 MB). Free memory was 872.6 MB in the beginning and 1.2 GB in the end (delta: -305.5 MB). Peak memory consumption was 136.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 359293.72 ms. Allocated memory was 1.3 GB in the beginning and 1.6 GB in the end (delta: 271.1 MB). Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 98.5 MB). Peak memory consumption was 369.5 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: ConstantTerm is neither BigInter nor BigDecimal, therefore comparison is not possible! de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: ConstantTerm is neither BigInter nor BigDecimal, therefore comparison is not possible!: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.AnnotateAndAsserterWithStmtOrderPrioritization.termHasConstantGreaterThan(AnnotateAndAsserterWithStmtOrderPrioritization.java:358) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...