./Ultimate.py --spec ../../sv-benchmarks/c/Systems_DeviceDriversLinux64_ReachSafety.prp --file ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--misc--idmouse.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_3e8eec20-edbb-4776-aaf6-9c08318fafe2/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_3e8eec20-edbb-4776-aaf6-9c08318fafe2/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_3e8eec20-edbb-4776-aaf6-9c08318fafe2/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_3e8eec20-edbb-4776-aaf6-9c08318fafe2/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--misc--idmouse.ko-entry_point_false-unreach-call.cil.out.c -s /tmp/vcloud-vcloud-master/worker/working_dir_3e8eec20-edbb-4776-aaf6-9c08318fafe2/bin-2019/utaipan/config/svcomp-Reach-64bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_3e8eec20-edbb-4776-aaf6-9c08318fafe2/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 62c50a1d7e588fd76b8473d5382ea23c662b9740 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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_3e8eec20-edbb-4776-aaf6-9c08318fafe2/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_3e8eec20-edbb-4776-aaf6-9c08318fafe2/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_3e8eec20-edbb-4776-aaf6-9c08318fafe2/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_3e8eec20-edbb-4776-aaf6-9c08318fafe2/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--misc--idmouse.ko-entry_point_false-unreach-call.cil.out.c -s /tmp/vcloud-vcloud-master/worker/working_dir_3e8eec20-edbb-4776-aaf6-9c08318fafe2/bin-2019/utaipan/config/svcomp-Reach-64bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_3e8eec20-edbb-4776-aaf6-9c08318fafe2/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 62c50a1d7e588fd76b8473d5382ea23c662b9740 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 11:25:39,614 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 11:25:39,616 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 11:25:39,624 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 11:25:39,624 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 11:25:39,624 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 11:25:39,625 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 11:25:39,626 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 11:25:39,627 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 11:25:39,628 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 11:25:39,629 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 11:25:39,629 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 11:25:39,630 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 11:25:39,630 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 11:25:39,631 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 11:25:39,632 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 11:25:39,633 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 11:25:39,634 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 11:25:39,635 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 11:25:39,636 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 11:25:39,637 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 11:25:39,638 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 11:25:39,640 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 11:25:39,640 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 11:25:39,640 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 11:25:39,641 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 11:25:39,642 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 11:25:39,643 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 11:25:39,643 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 11:25:39,644 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 11:25:39,644 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 11:25:39,645 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 11:25:39,645 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 11:25:39,646 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 11:25:39,646 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 11:25:39,647 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 11:25:39,647 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_3e8eec20-edbb-4776-aaf6-9c08318fafe2/bin-2019/utaipan/config/svcomp-Reach-64bit-Taipan_Default.epf [2018-11-18 11:25:39,656 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 11:25:39,656 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 11:25:39,657 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 11:25:39,657 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 11:25:39,657 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 11:25:39,657 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 11:25:39,658 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 11:25:39,658 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-18 11:25:39,658 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 11:25:39,658 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 11:25:39,658 INFO L133 SettingsManager]: * Log string format=TERM [2018-11-18 11:25:39,658 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-18 11:25:39,658 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-18 11:25:39,658 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 11:25:39,659 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 11:25:39,659 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 11:25:39,659 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 11:25:39,659 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 11:25:39,659 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 11:25:39,659 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 11:25:39,660 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 11:25:39,660 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 11:25:39,660 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 11:25:39,660 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 11:25:39,661 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 11:25:39,662 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 11:25:39,662 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 11:25:39,662 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 11:25:39,662 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 11:25:39,662 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 11:25:39,662 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 11:25:39,662 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-18 11:25:39,662 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 11:25:39,663 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 11:25:39,663 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-18 11:25:39,663 INFO L133 SettingsManager]: * To the following directory=dump/ [2018-11-18 11:25:39,663 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_3e8eec20-edbb-4776-aaf6-9c08318fafe2/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 -> 62c50a1d7e588fd76b8473d5382ea23c662b9740 [2018-11-18 11:25:39,684 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 11:25:39,692 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 11:25:39,694 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 11:25:39,695 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 11:25:39,695 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 11:25:39,695 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_3e8eec20-edbb-4776-aaf6-9c08318fafe2/bin-2019/utaipan/../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--misc--idmouse.ko-entry_point_false-unreach-call.cil.out.c [2018-11-18 11:25:39,734 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_3e8eec20-edbb-4776-aaf6-9c08318fafe2/bin-2019/utaipan/data/2a4b18c4e/9ea520d7229145ed8eefe9b5f6b87a6b/FLAG77a806f18 [2018-11-18 11:25:40,261 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 11:25:40,262 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_3e8eec20-edbb-4776-aaf6-9c08318fafe2/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--misc--idmouse.ko-entry_point_false-unreach-call.cil.out.c [2018-11-18 11:25:40,278 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_3e8eec20-edbb-4776-aaf6-9c08318fafe2/bin-2019/utaipan/data/2a4b18c4e/9ea520d7229145ed8eefe9b5f6b87a6b/FLAG77a806f18 [2018-11-18 11:25:40,714 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_3e8eec20-edbb-4776-aaf6-9c08318fafe2/bin-2019/utaipan/data/2a4b18c4e/9ea520d7229145ed8eefe9b5f6b87a6b [2018-11-18 11:25:40,716 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 11:25:40,717 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 11:25:40,718 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 11:25:40,718 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 11:25:40,720 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 11:25:40,720 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:25:40" (1/1) ... [2018-11-18 11:25:40,722 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5990ddce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:25:40, skipping insertion in model container [2018-11-18 11:25:40,722 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:25:40" (1/1) ... [2018-11-18 11:25:40,728 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 11:25:40,777 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 11:25:41,604 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 11:25:41,656 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 11:25:41,929 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 11:25:41,985 INFO L195 MainTranslator]: Completed translation [2018-11-18 11:25:41,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:25:41 WrapperNode [2018-11-18 11:25:41,985 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 11:25:41,986 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 11:25:41,986 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 11:25:41,986 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 11:25:41,993 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:25:41" (1/1) ... [2018-11-18 11:25:42,015 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:25:41" (1/1) ... [2018-11-18 11:25:42,024 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 11:25:42,025 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 11:25:42,025 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 11:25:42,025 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 11:25:42,033 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:25:41" (1/1) ... [2018-11-18 11:25:42,033 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:25:41" (1/1) ... [2018-11-18 11:25:42,041 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:25:41" (1/1) ... [2018-11-18 11:25:42,042 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:25:41" (1/1) ... [2018-11-18 11:25:42,072 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:25:41" (1/1) ... [2018-11-18 11:25:42,078 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:25:41" (1/1) ... [2018-11-18 11:25:42,085 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:25:41" (1/1) ... [2018-11-18 11:25:42,092 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 11:25:42,093 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 11:25:42,093 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 11:25:42,093 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 11:25:42,094 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:25:41" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3e8eec20-edbb-4776-aaf6-9c08318fafe2/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 11:25:42,144 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata [2018-11-18 11:25:42,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata [2018-11-18 11:25:42,145 INFO L130 BoogieDeclarations]: Found specification of procedure idmouse_read [2018-11-18 11:25:42,145 INFO L138 BoogieDeclarations]: Found implementation of procedure idmouse_read [2018-11-18 11:25:42,145 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-11-18 11:25:42,145 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 11:25:42,145 INFO L130 BoogieDeclarations]: Found specification of procedure usb_bulk_msg [2018-11-18 11:25:42,145 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2018-11-18 11:25:42,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2018-11-18 11:25:42,146 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2018-11-18 11:25:42,146 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-18 11:25:42,146 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister [2018-11-18 11:25:42,146 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_autopm_get_interface_3 [2018-11-18 11:25:42,146 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_autopm_get_interface_3 [2018-11-18 11:25:42,146 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2018-11-18 11:25:42,146 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2018-11-18 11:25:42,147 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_bulk [2018-11-18 11:25:42,147 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_bulk [2018-11-18 11:25:42,147 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata [2018-11-18 11:25:42,147 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata [2018-11-18 11:25:42,147 INFO L130 BoogieDeclarations]: Found specification of procedure idmouse_driver_exit [2018-11-18 11:25:42,147 INFO L138 BoogieDeclarations]: Found implementation of procedure idmouse_driver_exit [2018-11-18 11:25:42,147 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2018-11-18 11:25:42,148 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2018-11-18 11:25:42,148 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2018-11-18 11:25:42,148 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2018-11-18 11:25:42,148 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2018-11-18 11:25:42,148 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2018-11-18 11:25:42,148 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2018-11-18 11:25:42,148 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2018-11-18 11:25:42,148 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2018-11-18 11:25:42,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2018-11-18 11:25:42,149 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_maxp [2018-11-18 11:25:42,149 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_maxp [2018-11-18 11:25:42,149 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_driver_1 [2018-11-18 11:25:42,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_driver_1 [2018-11-18 11:25:42,150 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2018-11-18 11:25:42,150 INFO L130 BoogieDeclarations]: Found specification of procedure idmouse_suspend [2018-11-18 11:25:42,150 INFO L138 BoogieDeclarations]: Found implementation of procedure idmouse_suspend [2018-11-18 11:25:42,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-18 11:25:42,150 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2018-11-18 11:25:42,151 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2018-11-18 11:25:42,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2018-11-18 11:25:42,151 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister_dev [2018-11-18 11:25:42,151 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_in [2018-11-18 11:25:42,151 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_in [2018-11-18 11:25:42,151 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2018-11-18 11:25:42,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2018-11-18 11:25:42,151 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_deregister_10 [2018-11-18 11:25:42,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_deregister_10 [2018-11-18 11:25:42,151 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2018-11-18 11:25:42,152 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2018-11-18 11:25:42,152 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_register_driver_9 [2018-11-18 11:25:42,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_register_driver_9 [2018-11-18 11:25:42,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 11:25:42,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 11:25:42,152 INFO L130 BoogieDeclarations]: Found specification of procedure idmouse_resume [2018-11-18 11:25:42,152 INFO L138 BoogieDeclarations]: Found implementation of procedure idmouse_resume [2018-11-18 11:25:42,152 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___0 [2018-11-18 11:25:42,152 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___0 [2018-11-18 11:25:42,152 INFO L130 BoogieDeclarations]: Found specification of procedure usb_find_interface [2018-11-18 11:25:42,153 INFO L130 BoogieDeclarations]: Found specification of procedure idmouse_create_image [2018-11-18 11:25:42,153 INFO L138 BoogieDeclarations]: Found implementation of procedure idmouse_create_image [2018-11-18 11:25:42,153 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata_2 [2018-11-18 11:25:42,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata_2 [2018-11-18 11:25:42,153 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_is_bulk_in [2018-11-18 11:25:42,153 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_is_bulk_in [2018-11-18 11:25:42,153 INFO L130 BoogieDeclarations]: Found specification of procedure idmouse_probe [2018-11-18 11:25:42,153 INFO L138 BoogieDeclarations]: Found implementation of procedure idmouse_probe [2018-11-18 11:25:42,153 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2018-11-18 11:25:42,153 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2018-11-18 11:25:42,153 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2018-11-18 11:25:42,154 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2018-11-18 11:25:42,154 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 11:25:42,154 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 11:25:42,154 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ptr [2018-11-18 11:25:42,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ptr [2018-11-18 11:25:42,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-11-18 11:25:42,154 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2018-11-18 11:25:42,154 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata_5 [2018-11-18 11:25:42,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata_5 [2018-11-18 11:25:42,154 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-11-18 11:25:42,154 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2018-11-18 11:25:42,155 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_driver [2018-11-18 11:25:42,155 INFO L130 BoogieDeclarations]: Found specification of procedure default_llseek [2018-11-18 11:25:42,155 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_dev [2018-11-18 11:25:42,155 INFO L130 BoogieDeclarations]: Found specification of procedure idmouse_disconnect [2018-11-18 11:25:42,155 INFO L138 BoogieDeclarations]: Found implementation of procedure idmouse_disconnect [2018-11-18 11:25:42,155 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_autopm_put_interface_4 [2018-11-18 11:25:42,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_autopm_put_interface_4 [2018-11-18 11:25:42,155 INFO L130 BoogieDeclarations]: Found specification of procedure signal_pending [2018-11-18 11:25:42,155 INFO L138 BoogieDeclarations]: Found implementation of procedure signal_pending [2018-11-18 11:25:42,155 INFO L130 BoogieDeclarations]: Found specification of procedure iminor [2018-11-18 11:25:42,155 INFO L138 BoogieDeclarations]: Found implementation of procedure iminor [2018-11-18 11:25:42,156 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_get_interface [2018-11-18 11:25:42,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_get_interface [2018-11-18 11:25:42,156 INFO L130 BoogieDeclarations]: Found specification of procedure idmouse_release [2018-11-18 11:25:42,156 INFO L138 BoogieDeclarations]: Found implementation of procedure idmouse_release [2018-11-18 11:25:42,156 INFO L130 BoogieDeclarations]: Found specification of procedure idmouse_open [2018-11-18 11:25:42,156 INFO L138 BoogieDeclarations]: Found implementation of procedure idmouse_open [2018-11-18 11:25:42,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 11:25:42,156 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_file_operations_2 [2018-11-18 11:25:42,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_file_operations_2 [2018-11-18 11:25:42,156 INFO L130 BoogieDeclarations]: Found specification of procedure idmouse_delete [2018-11-18 11:25:42,156 INFO L138 BoogieDeclarations]: Found implementation of procedure idmouse_delete [2018-11-18 11:25:42,156 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2018-11-18 11:25:42,157 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2018-11-18 11:25:42,157 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2018-11-18 11:25:42,157 INFO L130 BoogieDeclarations]: Found specification of procedure test_ti_thread_flag [2018-11-18 11:25:42,157 INFO L138 BoogieDeclarations]: Found implementation of procedure test_ti_thread_flag [2018-11-18 11:25:42,157 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2018-11-18 11:25:42,157 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2018-11-18 11:25:42,157 INFO L130 BoogieDeclarations]: Found specification of procedure idmouse_driver_init [2018-11-18 11:25:42,157 INFO L138 BoogieDeclarations]: Found implementation of procedure idmouse_driver_init [2018-11-18 11:25:42,157 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2018-11-18 11:25:42,157 INFO L130 BoogieDeclarations]: Found specification of procedure test_tsk_thread_flag [2018-11-18 11:25:42,157 INFO L138 BoogieDeclarations]: Found implementation of procedure test_tsk_thread_flag [2018-11-18 11:25:42,158 INFO L130 BoogieDeclarations]: Found specification of procedure simple_read_from_buffer [2018-11-18 11:25:42,158 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_interface [2018-11-18 11:25:42,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_interface [2018-11-18 11:25:42,158 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2018-11-18 11:25:42,158 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2018-11-18 11:25:42,158 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2018-11-18 11:25:42,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2018-11-18 11:25:42,158 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2018-11-18 11:25:42,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2018-11-18 11:25:42,158 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 11:25:42,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 11:25:42,159 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_interface_to_usbdev [2018-11-18 11:25:42,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_interface_to_usbdev [2018-11-18 11:25:45,413 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 11:25:45,414 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:25:45 BoogieIcfgContainer [2018-11-18 11:25:45,414 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 11:25:45,414 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 11:25:45,415 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 11:25:45,417 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 11:25:45,417 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 11:25:40" (1/3) ... [2018-11-18 11:25:45,417 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75e5bbb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:25:45, skipping insertion in model container [2018-11-18 11:25:45,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:25:41" (2/3) ... [2018-11-18 11:25:45,418 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75e5bbb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:25:45, skipping insertion in model container [2018-11-18 11:25:45,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:25:45" (3/3) ... [2018-11-18 11:25:45,419 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--usb--misc--idmouse.ko-entry_point_false-unreach-call.cil.out.c [2018-11-18 11:25:45,426 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 11:25:45,431 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 11:25:45,441 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 11:25:45,466 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 11:25:45,466 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 11:25:45,466 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 11:25:45,466 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 11:25:45,466 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 11:25:45,466 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 11:25:45,466 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 11:25:45,466 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 11:25:45,485 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states. [2018-11-18 11:25:45,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-11-18 11:25:45,493 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:25:45,493 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:25:45,495 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:25:45,499 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:25:45,499 INFO L82 PathProgramCache]: Analyzing trace with hash 456015441, now seen corresponding path program 1 times [2018-11-18 11:25:45,501 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 11:25:45,543 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:25:45,544 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:25:45,544 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:25:45,544 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 11:25:45,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:25:45,789 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-11-18 11:25:45,791 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:25:45,791 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 11:25:45,791 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 11:25:45,796 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 11:25:45,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 11:25:45,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 11:25:45,810 INFO L87 Difference]: Start difference. First operand 420 states. Second operand 3 states. [2018-11-18 11:25:47,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:25:47,964 INFO L93 Difference]: Finished difference Result 1168 states and 1513 transitions. [2018-11-18 11:25:47,965 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 11:25:47,966 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 48 [2018-11-18 11:25:47,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:25:47,980 INFO L225 Difference]: With dead ends: 1168 [2018-11-18 11:25:47,980 INFO L226 Difference]: Without dead ends: 743 [2018-11-18 11:25:47,985 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 11:25:47,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 743 states. [2018-11-18 11:25:48,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 743 to 740. [2018-11-18 11:25:48,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 740 states. [2018-11-18 11:25:48,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 740 states to 740 states and 944 transitions. [2018-11-18 11:25:48,067 INFO L78 Accepts]: Start accepts. Automaton has 740 states and 944 transitions. Word has length 48 [2018-11-18 11:25:48,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:25:48,067 INFO L480 AbstractCegarLoop]: Abstraction has 740 states and 944 transitions. [2018-11-18 11:25:48,067 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 11:25:48,067 INFO L276 IsEmpty]: Start isEmpty. Operand 740 states and 944 transitions. [2018-11-18 11:25:48,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-11-18 11:25:48,071 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:25:48,071 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:25:48,071 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:25:48,071 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:25:48,071 INFO L82 PathProgramCache]: Analyzing trace with hash -900862160, now seen corresponding path program 1 times [2018-11-18 11:25:48,071 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 11:25:48,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:25:48,074 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:25:48,074 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:25:48,074 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 11:25:48,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:25:48,187 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-11-18 11:25:48,187 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:25:48,187 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 11:25:48,187 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 11:25:48,188 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 11:25:48,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 11:25:48,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 11:25:48,189 INFO L87 Difference]: Start difference. First operand 740 states and 944 transitions. Second operand 4 states. [2018-11-18 11:25:48,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:25:48,239 INFO L93 Difference]: Finished difference Result 1466 states and 1871 transitions. [2018-11-18 11:25:48,239 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 11:25:48,239 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 64 [2018-11-18 11:25:48,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:25:48,243 INFO L225 Difference]: With dead ends: 1466 [2018-11-18 11:25:48,243 INFO L226 Difference]: Without dead ends: 741 [2018-11-18 11:25:48,245 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 11:25:48,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2018-11-18 11:25:48,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 741. [2018-11-18 11:25:48,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 741 states. [2018-11-18 11:25:48,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 741 states to 741 states and 945 transitions. [2018-11-18 11:25:48,273 INFO L78 Accepts]: Start accepts. Automaton has 741 states and 945 transitions. Word has length 64 [2018-11-18 11:25:48,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:25:48,273 INFO L480 AbstractCegarLoop]: Abstraction has 741 states and 945 transitions. [2018-11-18 11:25:48,273 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 11:25:48,273 INFO L276 IsEmpty]: Start isEmpty. Operand 741 states and 945 transitions. [2018-11-18 11:25:48,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-11-18 11:25:48,275 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:25:48,275 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:25:48,275 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:25:48,276 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:25:48,276 INFO L82 PathProgramCache]: Analyzing trace with hash -1407038382, now seen corresponding path program 1 times [2018-11-18 11:25:48,276 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 11:25:48,279 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:25:48,279 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:25:48,279 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:25:48,280 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 11:25:48,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:25:48,392 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2018-11-18 11:25:48,392 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:25:48,392 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 11:25:48,393 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 11:25:48,393 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 11:25:48,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 11:25:48,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 11:25:48,393 INFO L87 Difference]: Start difference. First operand 741 states and 945 transitions. Second operand 3 states. [2018-11-18 11:25:48,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:25:48,414 INFO L93 Difference]: Finished difference Result 743 states and 946 transitions. [2018-11-18 11:25:48,415 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 11:25:48,415 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 65 [2018-11-18 11:25:48,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:25:48,418 INFO L225 Difference]: With dead ends: 743 [2018-11-18 11:25:48,418 INFO L226 Difference]: Without dead ends: 740 [2018-11-18 11:25:48,419 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 11:25:48,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 740 states. [2018-11-18 11:25:48,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 740 to 740. [2018-11-18 11:25:48,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 740 states. [2018-11-18 11:25:48,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 740 states to 740 states and 943 transitions. [2018-11-18 11:25:48,444 INFO L78 Accepts]: Start accepts. Automaton has 740 states and 943 transitions. Word has length 65 [2018-11-18 11:25:48,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:25:48,445 INFO L480 AbstractCegarLoop]: Abstraction has 740 states and 943 transitions. [2018-11-18 11:25:48,445 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 11:25:48,445 INFO L276 IsEmpty]: Start isEmpty. Operand 740 states and 943 transitions. [2018-11-18 11:25:48,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-11-18 11:25:48,447 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:25:48,447 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:25:48,447 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:25:48,447 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:25:48,447 INFO L82 PathProgramCache]: Analyzing trace with hash -668852720, now seen corresponding path program 1 times [2018-11-18 11:25:48,448 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 11:25:48,450 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:25:48,450 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:25:48,450 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 11:25:48,450 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 11:25:48,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:25:48,557 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-11-18 11:25:48,558 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:25:48,558 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 11:25:48,558 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 67 with the following transitions: [2018-11-18 11:25:48,560 INFO L202 CegarAbsIntRunner]: [87], [89], [91], [93], [95], [97], [214], [217], [220], [232], [235], [238], [240], [246], [250], [474], [476], [477], [543], [560], [562], [563], [572], [576], [578], [579], [589], [591], [592], [593], [594], [603], [612], [639], [642], [646], [814], [815], [816], [817], [818], [819], [820], [821], [838], [839], [854], [878], [879], [902], [903], [908], [909], [914], [950], [951], [952] [2018-11-18 11:25:48,588 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-18 11:25:48,588 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-18 11:25:48,733 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:288) 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.translateStore(MappedTerm2Expression.java:288) 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.translateStore(MappedTerm2Expression.java:288) 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.translateStore(MappedTerm2Expression.java:288) 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.translateStore(MappedTerm2Expression.java:288) 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.translateStore(MappedTerm2Expression.java:288) 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.translateStore(MappedTerm2Expression.java:288) 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.translateStore(MappedTerm2Expression.java:288) 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.translateStore(MappedTerm2Expression.java:288) 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.translateStore(MappedTerm2Expression.java:288) 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.translateStore(MappedTerm2Expression.java:288) 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.translateStore(MappedTerm2Expression.java:288) 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.translateStore(MappedTerm2Expression.java:288) 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.translateStore(MappedTerm2Expression.java:288) 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.translateStore(MappedTerm2Expression.java:288) 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.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.translateStore(MappedTerm2Expression.java:288) 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.translateStore(MappedTerm2Expression.java:288) 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.translateStore(MappedTerm2Expression.java:288) 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 11:25:48,740 INFO L168 Benchmark]: Toolchain (without parser) took 8023.59 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 349.2 MB). Free memory was 949.5 MB in the beginning and 967.3 MB in the end (delta: -17.9 MB). Peak memory consumption was 331.3 MB. Max. memory is 11.5 GB. [2018-11-18 11:25:48,742 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 11:25:48,742 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1267.62 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 253.2 MB). Free memory was 949.5 MB in the beginning and 1.1 GB in the end (delta: -101.4 MB). Peak memory consumption was 310.8 MB. Max. memory is 11.5 GB. [2018-11-18 11:25:48,743 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.66 ms. Allocated memory is still 1.3 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 11:25:48,743 INFO L168 Benchmark]: Boogie Preprocessor took 68.35 ms. Allocated memory is still 1.3 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 11.5 GB. [2018-11-18 11:25:48,743 INFO L168 Benchmark]: RCFGBuilder took 3320.75 ms. Allocated memory was 1.3 GB in the beginning and 1.4 GB in the end (delta: 95.9 MB). Free memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: -170.0 MB). Peak memory consumption was 234.5 MB. Max. memory is 11.5 GB. [2018-11-18 11:25:48,744 INFO L168 Benchmark]: TraceAbstraction took 3325.47 ms. Allocated memory is still 1.4 GB. Free memory was 1.2 GB in the beginning and 967.3 MB in the end (delta: 241.9 MB). Peak memory consumption was 241.9 MB. Max. memory is 11.5 GB. [2018-11-18 11:25:48,747 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 980.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 1267.62 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 253.2 MB). Free memory was 949.5 MB in the beginning and 1.1 GB in the end (delta: -101.4 MB). Peak memory consumption was 310.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 38.66 ms. Allocated memory is still 1.3 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 68.35 ms. Allocated memory is still 1.3 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 11.5 GB. * RCFGBuilder took 3320.75 ms. Allocated memory was 1.3 GB in the beginning and 1.4 GB in the end (delta: 95.9 MB). Free memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: -170.0 MB). Peak memory consumption was 234.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3325.47 ms. Allocated memory is still 1.4 GB. Free memory was 1.2 GB in the beginning and 967.3 MB in the end (delta: 241.9 MB). Peak memory consumption was 241.9 MB. 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 11:25:50,153 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 11:25:50,154 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 11:25:50,161 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 11:25:50,161 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 11:25:50,162 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 11:25:50,162 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 11:25:50,164 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 11:25:50,165 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 11:25:50,165 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 11:25:50,166 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 11:25:50,166 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 11:25:50,167 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 11:25:50,168 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 11:25:50,168 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 11:25:50,169 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 11:25:50,170 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 11:25:50,171 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 11:25:50,172 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 11:25:50,173 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 11:25:50,174 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 11:25:50,175 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 11:25:50,177 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 11:25:50,177 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 11:25:50,177 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 11:25:50,178 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 11:25:50,178 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 11:25:50,179 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 11:25:50,179 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 11:25:50,180 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 11:25:50,180 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 11:25:50,181 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 11:25:50,181 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 11:25:50,181 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 11:25:50,182 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 11:25:50,182 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 11:25:50,182 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_3e8eec20-edbb-4776-aaf6-9c08318fafe2/bin-2019/utaipan/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2018-11-18 11:25:50,193 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 11:25:50,193 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 11:25:50,194 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 11:25:50,194 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 11:25:50,194 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 11:25:50,194 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 11:25:50,195 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 11:25:50,195 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 11:25:50,195 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 11:25:50,195 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 11:25:50,195 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 11:25:50,196 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 11:25:50,196 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 11:25:50,196 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 11:25:50,196 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 11:25:50,196 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-18 11:25:50,196 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-18 11:25:50,196 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 11:25:50,197 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 11:25:50,197 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 11:25:50,197 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 11:25:50,197 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 11:25:50,197 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 11:25:50,197 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 11:25:50,197 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 11:25:50,198 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 11:25:50,198 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 11:25:50,198 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 11:25:50,198 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-11-18 11:25:50,198 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 11:25:50,198 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-18 11:25:50,198 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-18 11:25:50,198 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_3e8eec20-edbb-4776-aaf6-9c08318fafe2/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 -> 62c50a1d7e588fd76b8473d5382ea23c662b9740 [2018-11-18 11:25:50,225 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 11:25:50,234 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 11:25:50,236 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 11:25:50,237 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 11:25:50,237 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 11:25:50,237 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_3e8eec20-edbb-4776-aaf6-9c08318fafe2/bin-2019/utaipan/../../sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--misc--idmouse.ko-entry_point_false-unreach-call.cil.out.c [2018-11-18 11:25:50,272 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_3e8eec20-edbb-4776-aaf6-9c08318fafe2/bin-2019/utaipan/data/ff1a2cf5a/6b5bc333bd714624a7393df7366fc04a/FLAG55b1ef8bc [2018-11-18 11:25:50,698 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 11:25:50,699 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_3e8eec20-edbb-4776-aaf6-9c08318fafe2/sv-benchmarks/c/ldv-linux-3.12-rc1/linux-3.12-rc1.tar.xz-144_2a-drivers--usb--misc--idmouse.ko-entry_point_false-unreach-call.cil.out.c [2018-11-18 11:25:50,715 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_3e8eec20-edbb-4776-aaf6-9c08318fafe2/bin-2019/utaipan/data/ff1a2cf5a/6b5bc333bd714624a7393df7366fc04a/FLAG55b1ef8bc [2018-11-18 11:25:50,724 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_3e8eec20-edbb-4776-aaf6-9c08318fafe2/bin-2019/utaipan/data/ff1a2cf5a/6b5bc333bd714624a7393df7366fc04a [2018-11-18 11:25:50,727 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 11:25:50,727 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 11:25:50,728 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 11:25:50,728 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 11:25:50,730 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 11:25:50,731 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:25:50" (1/1) ... [2018-11-18 11:25:50,732 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c808678 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:25:50, skipping insertion in model container [2018-11-18 11:25:50,732 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 11:25:50" (1/1) ... [2018-11-18 11:25:50,738 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 11:25:50,789 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 11:25:51,629 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 11:25:51,730 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 11:25:52,038 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 11:25:52,122 INFO L195 MainTranslator]: Completed translation [2018-11-18 11:25:52,122 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:25:52 WrapperNode [2018-11-18 11:25:52,123 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 11:25:52,123 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 11:25:52,123 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 11:25:52,123 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 11:25:52,131 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:25:52" (1/1) ... [2018-11-18 11:25:52,154 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:25:52" (1/1) ... [2018-11-18 11:25:52,164 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 11:25:52,164 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 11:25:52,164 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 11:25:52,165 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 11:25:52,173 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:25:52" (1/1) ... [2018-11-18 11:25:52,173 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:25:52" (1/1) ... [2018-11-18 11:25:52,181 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:25:52" (1/1) ... [2018-11-18 11:25:52,181 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:25:52" (1/1) ... [2018-11-18 11:25:52,220 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:25:52" (1/1) ... [2018-11-18 11:25:52,227 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:25:52" (1/1) ... [2018-11-18 11:25:52,235 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:25:52" (1/1) ... [2018-11-18 11:25:52,245 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 11:25:52,245 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 11:25:52,245 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 11:25:52,245 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 11:25:52,246 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:25:52" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3e8eec20-edbb-4776-aaf6-9c08318fafe2/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 11:25:52,300 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata [2018-11-18 11:25:52,300 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata [2018-11-18 11:25:52,300 INFO L130 BoogieDeclarations]: Found specification of procedure idmouse_read [2018-11-18 11:25:52,301 INFO L138 BoogieDeclarations]: Found implementation of procedure idmouse_read [2018-11-18 11:25:52,301 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2018-11-18 11:25:52,301 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE8 [2018-11-18 11:25:52,301 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 11:25:52,301 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-11-18 11:25:52,301 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE2 [2018-11-18 11:25:52,301 INFO L130 BoogieDeclarations]: Found specification of procedure usb_bulk_msg [2018-11-18 11:25:52,302 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop [2018-11-18 11:25:52,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop [2018-11-18 11:25:52,302 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_initialize [2018-11-18 11:25:52,302 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister [2018-11-18 11:25:52,302 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_autopm_get_interface_3 [2018-11-18 11:25:52,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_autopm_get_interface_3 [2018-11-18 11:25:52,302 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2018-11-18 11:25:52,302 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2018-11-18 11:25:52,303 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_xfer_bulk [2018-11-18 11:25:52,303 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_xfer_bulk [2018-11-18 11:25:52,303 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata [2018-11-18 11:25:52,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata [2018-11-18 11:25:52,303 INFO L130 BoogieDeclarations]: Found specification of procedure idmouse_driver_exit [2018-11-18 11:25:52,303 INFO L138 BoogieDeclarations]: Found implementation of procedure idmouse_driver_exit [2018-11-18 11:25:52,303 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2018-11-18 11:25:52,303 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2018-11-18 11:25:52,304 INFO L130 BoogieDeclarations]: Found specification of procedure variable_test_bit [2018-11-18 11:25:52,304 INFO L138 BoogieDeclarations]: Found implementation of procedure variable_test_bit [2018-11-18 11:25:52,304 INFO L130 BoogieDeclarations]: Found specification of procedure get_current [2018-11-18 11:25:52,304 INFO L138 BoogieDeclarations]: Found implementation of procedure get_current [2018-11-18 11:25:52,304 INFO L130 BoogieDeclarations]: Found specification of procedure __create_pipe [2018-11-18 11:25:52,304 INFO L138 BoogieDeclarations]: Found implementation of procedure __create_pipe [2018-11-18 11:25:52,304 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2018-11-18 11:25:52,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2018-11-18 11:25:52,305 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_maxp [2018-11-18 11:25:52,305 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_maxp [2018-11-18 11:25:52,305 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_driver_1 [2018-11-18 11:25:52,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_driver_1 [2018-11-18 11:25:52,305 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2018-11-18 11:25:52,305 INFO L130 BoogieDeclarations]: Found specification of procedure idmouse_suspend [2018-11-18 11:25:52,306 INFO L138 BoogieDeclarations]: Found implementation of procedure idmouse_suspend [2018-11-18 11:25:52,306 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_unlock [2018-11-18 11:25:52,306 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_error [2018-11-18 11:25:52,306 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_error [2018-11-18 11:25:52,306 INFO L130 BoogieDeclarations]: Found specification of procedure usb_deregister_dev [2018-11-18 11:25:52,306 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_dir_in [2018-11-18 11:25:52,306 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_dir_in [2018-11-18 11:25:52,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2018-11-18 11:25:52,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE2 [2018-11-18 11:25:52,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE1 [2018-11-18 11:25:52,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE8 [2018-11-18 11:25:52,307 INFO L130 BoogieDeclarations]: Found specification of procedure ldv__builtin_expect [2018-11-18 11:25:52,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv__builtin_expect [2018-11-18 11:25:52,307 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_deregister_10 [2018-11-18 11:25:52,307 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_deregister_10 [2018-11-18 11:25:52,308 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2018-11-18 11:25:52,308 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2018-11-18 11:25:52,308 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_register_driver_9 [2018-11-18 11:25:52,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_register_driver_9 [2018-11-18 11:25:52,308 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 11:25:52,308 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 11:25:52,311 INFO L130 BoogieDeclarations]: Found specification of procedure idmouse_resume [2018-11-18 11:25:52,312 INFO L138 BoogieDeclarations]: Found implementation of procedure idmouse_resume [2018-11-18 11:25:52,312 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_stop___0 [2018-11-18 11:25:52,312 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_stop___0 [2018-11-18 11:25:52,312 INFO L130 BoogieDeclarations]: Found specification of procedure usb_find_interface [2018-11-18 11:25:52,312 INFO L130 BoogieDeclarations]: Found specification of procedure idmouse_create_image [2018-11-18 11:25:52,312 INFO L138 BoogieDeclarations]: Found implementation of procedure idmouse_create_image [2018-11-18 11:25:52,312 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_get_intfdata_2 [2018-11-18 11:25:52,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_get_intfdata_2 [2018-11-18 11:25:52,313 INFO L130 BoogieDeclarations]: Found specification of procedure usb_endpoint_is_bulk_in [2018-11-18 11:25:52,313 INFO L138 BoogieDeclarations]: Found implementation of procedure usb_endpoint_is_bulk_in [2018-11-18 11:25:52,313 INFO L130 BoogieDeclarations]: Found specification of procedure idmouse_probe [2018-11-18 11:25:52,313 INFO L138 BoogieDeclarations]: Found implementation of procedure idmouse_probe [2018-11-18 11:25:52,313 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_int [2018-11-18 11:25:52,313 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_int [2018-11-18 11:25:52,313 INFO L130 BoogieDeclarations]: Found specification of procedure __kmalloc [2018-11-18 11:25:52,314 INFO L138 BoogieDeclarations]: Found implementation of procedure __kmalloc [2018-11-18 11:25:52,314 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 11:25:52,314 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 11:25:52,314 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_undef_ptr [2018-11-18 11:25:52,314 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_undef_ptr [2018-11-18 11:25:52,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-11-18 11:25:52,314 INFO L130 BoogieDeclarations]: Found specification of procedure __bad_percpu_size [2018-11-18 11:25:52,315 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_set_intfdata_5 [2018-11-18 11:25:52,315 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_set_intfdata_5 [2018-11-18 11:25:52,315 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-11-18 11:25:52,315 INFO L130 BoogieDeclarations]: Found specification of procedure usb_control_msg [2018-11-18 11:25:52,315 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_driver [2018-11-18 11:25:52,315 INFO L130 BoogieDeclarations]: Found specification of procedure default_llseek [2018-11-18 11:25:52,315 INFO L130 BoogieDeclarations]: Found specification of procedure usb_register_dev [2018-11-18 11:25:52,315 INFO L130 BoogieDeclarations]: Found specification of procedure idmouse_disconnect [2018-11-18 11:25:52,315 INFO L138 BoogieDeclarations]: Found implementation of procedure idmouse_disconnect [2018-11-18 11:25:52,316 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_usb_autopm_put_interface_4 [2018-11-18 11:25:52,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_usb_autopm_put_interface_4 [2018-11-18 11:25:52,316 INFO L130 BoogieDeclarations]: Found specification of procedure signal_pending [2018-11-18 11:25:52,316 INFO L138 BoogieDeclarations]: Found implementation of procedure signal_pending [2018-11-18 11:25:52,316 INFO L130 BoogieDeclarations]: Found specification of procedure iminor [2018-11-18 11:25:52,316 INFO L138 BoogieDeclarations]: Found implementation of procedure iminor [2018-11-18 11:25:52,316 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_get_interface [2018-11-18 11:25:52,316 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_get_interface [2018-11-18 11:25:52,317 INFO L130 BoogieDeclarations]: Found specification of procedure idmouse_release [2018-11-18 11:25:52,317 INFO L138 BoogieDeclarations]: Found implementation of procedure idmouse_release [2018-11-18 11:25:52,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2018-11-18 11:25:52,317 INFO L130 BoogieDeclarations]: Found specification of procedure idmouse_open [2018-11-18 11:25:52,317 INFO L138 BoogieDeclarations]: Found implementation of procedure idmouse_open [2018-11-18 11:25:52,317 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 11:25:52,317 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-11-18 11:25:52,317 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_file_operations_2 [2018-11-18 11:25:52,317 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_file_operations_2 [2018-11-18 11:25:52,318 INFO L130 BoogieDeclarations]: Found specification of procedure idmouse_delete [2018-11-18 11:25:52,318 INFO L138 BoogieDeclarations]: Found implementation of procedure idmouse_delete [2018-11-18 11:25:52,318 INFO L130 BoogieDeclarations]: Found specification of procedure __mutex_init [2018-11-18 11:25:52,318 INFO L130 BoogieDeclarations]: Found specification of procedure kzalloc [2018-11-18 11:25:52,318 INFO L138 BoogieDeclarations]: Found implementation of procedure kzalloc [2018-11-18 11:25:52,318 INFO L130 BoogieDeclarations]: Found specification of procedure test_ti_thread_flag [2018-11-18 11:25:52,318 INFO L138 BoogieDeclarations]: Found implementation of procedure test_ti_thread_flag [2018-11-18 11:25:52,318 INFO L130 BoogieDeclarations]: Found specification of procedure kmalloc [2018-11-18 11:25:52,319 INFO L138 BoogieDeclarations]: Found implementation of procedure kmalloc [2018-11-18 11:25:52,319 INFO L130 BoogieDeclarations]: Found specification of procedure idmouse_driver_init [2018-11-18 11:25:52,319 INFO L138 BoogieDeclarations]: Found implementation of procedure idmouse_driver_init [2018-11-18 11:25:52,319 INFO L130 BoogieDeclarations]: Found specification of procedure mutex_lock_nested [2018-11-18 11:25:52,319 INFO L130 BoogieDeclarations]: Found specification of procedure test_tsk_thread_flag [2018-11-18 11:25:52,319 INFO L138 BoogieDeclarations]: Found implementation of procedure test_tsk_thread_flag [2018-11-18 11:25:52,319 INFO L130 BoogieDeclarations]: Found specification of procedure simple_read_from_buffer [2018-11-18 11:25:52,319 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_put_interface [2018-11-18 11:25:52,319 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_put_interface [2018-11-18 11:25:52,320 INFO L130 BoogieDeclarations]: Found specification of procedure interface_to_usbdev [2018-11-18 11:25:52,320 INFO L138 BoogieDeclarations]: Found implementation of procedure interface_to_usbdev [2018-11-18 11:25:52,320 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_check_final_state [2018-11-18 11:25:52,320 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_check_final_state [2018-11-18 11:25:52,320 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2018-11-18 11:25:52,320 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2018-11-18 11:25:52,320 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 11:25:52,320 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 11:25:52,321 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_interface_to_usbdev [2018-11-18 11:25:52,321 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_interface_to_usbdev [2018-11-18 11:25:55,869 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 11:25:55,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:25:55 BoogieIcfgContainer [2018-11-18 11:25:55,870 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 11:25:55,871 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 11:25:55,871 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 11:25:55,873 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 11:25:55,873 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 11:25:50" (1/3) ... [2018-11-18 11:25:55,874 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b36a7af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:25:55, skipping insertion in model container [2018-11-18 11:25:55,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 11:25:52" (2/3) ... [2018-11-18 11:25:55,874 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b36a7af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 11:25:55, skipping insertion in model container [2018-11-18 11:25:55,874 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 11:25:55" (3/3) ... [2018-11-18 11:25:55,875 INFO L112 eAbstractionObserver]: Analyzing ICFG linux-3.12-rc1.tar.xz-144_2a-drivers--usb--misc--idmouse.ko-entry_point_false-unreach-call.cil.out.c [2018-11-18 11:25:55,882 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 11:25:55,887 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 11:25:55,896 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 11:25:55,919 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 11:25:55,919 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 11:25:55,919 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 11:25:55,919 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 11:25:55,920 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 11:25:55,920 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 11:25:55,920 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 11:25:55,920 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 11:25:55,920 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 11:25:55,938 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states. [2018-11-18 11:25:55,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-11-18 11:25:55,944 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:25:55,945 INFO L375 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:25:55,947 INFO L423 AbstractCegarLoop]: === Iteration 1 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:25:55,950 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:25:55,950 INFO L82 PathProgramCache]: Analyzing trace with hash 456015441, now seen corresponding path program 1 times [2018-11-18 11:25:55,954 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 11:25:55,955 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3e8eec20-edbb-4776-aaf6-9c08318fafe2/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 11:25:55,982 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:25:56,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:25:56,177 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:25:56,212 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-11-18 11:25:56,213 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 11:25:56,218 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:25:56,218 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 11:25:56,221 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 11:25:56,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 11:25:56,229 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 11:25:56,230 INFO L87 Difference]: Start difference. First operand 420 states. Second operand 3 states. [2018-11-18 11:25:58,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:25:58,433 INFO L93 Difference]: Finished difference Result 1168 states and 1513 transitions. [2018-11-18 11:25:58,434 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 11:25:58,435 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 48 [2018-11-18 11:25:58,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:25:58,450 INFO L225 Difference]: With dead ends: 1168 [2018-11-18 11:25:58,450 INFO L226 Difference]: Without dead ends: 743 [2018-11-18 11:25:58,455 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 46 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 11:25:58,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 743 states. [2018-11-18 11:25:58,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 743 to 740. [2018-11-18 11:25:58,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 740 states. [2018-11-18 11:25:58,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 740 states to 740 states and 944 transitions. [2018-11-18 11:25:58,547 INFO L78 Accepts]: Start accepts. Automaton has 740 states and 944 transitions. Word has length 48 [2018-11-18 11:25:58,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:25:58,548 INFO L480 AbstractCegarLoop]: Abstraction has 740 states and 944 transitions. [2018-11-18 11:25:58,548 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 11:25:58,548 INFO L276 IsEmpty]: Start isEmpty. Operand 740 states and 944 transitions. [2018-11-18 11:25:58,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2018-11-18 11:25:58,551 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:25:58,551 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:25:58,551 INFO L423 AbstractCegarLoop]: === Iteration 2 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:25:58,551 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:25:58,552 INFO L82 PathProgramCache]: Analyzing trace with hash -900862160, now seen corresponding path program 1 times [2018-11-18 11:25:58,552 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 11:25:58,553 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3e8eec20-edbb-4776-aaf6-9c08318fafe2/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 11:25:58,585 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:25:59,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:25:59,184 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:25:59,225 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-11-18 11:25:59,225 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 11:25:59,233 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:25:59,233 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 11:25:59,234 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-11-18 11:25:59,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 11:25:59,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 11:25:59,234 INFO L87 Difference]: Start difference. First operand 740 states and 944 transitions. Second operand 4 states. [2018-11-18 11:25:59,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:25:59,301 INFO L93 Difference]: Finished difference Result 1466 states and 1871 transitions. [2018-11-18 11:25:59,302 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 11:25:59,302 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 64 [2018-11-18 11:25:59,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:25:59,306 INFO L225 Difference]: With dead ends: 1466 [2018-11-18 11:25:59,306 INFO L226 Difference]: Without dead ends: 741 [2018-11-18 11:25:59,308 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 61 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 11:25:59,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2018-11-18 11:25:59,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 741. [2018-11-18 11:25:59,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 741 states. [2018-11-18 11:25:59,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 741 states to 741 states and 945 transitions. [2018-11-18 11:25:59,339 INFO L78 Accepts]: Start accepts. Automaton has 741 states and 945 transitions. Word has length 64 [2018-11-18 11:25:59,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:25:59,340 INFO L480 AbstractCegarLoop]: Abstraction has 741 states and 945 transitions. [2018-11-18 11:25:59,340 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-11-18 11:25:59,340 INFO L276 IsEmpty]: Start isEmpty. Operand 741 states and 945 transitions. [2018-11-18 11:25:59,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-11-18 11:25:59,342 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:25:59,342 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:25:59,342 INFO L423 AbstractCegarLoop]: === Iteration 3 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:25:59,342 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:25:59,342 INFO L82 PathProgramCache]: Analyzing trace with hash -1407038382, now seen corresponding path program 1 times [2018-11-18 11:25:59,343 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 11:25:59,344 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3e8eec20-edbb-4776-aaf6-9c08318fafe2/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 11:25:59,366 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:25:59,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:25:59,812 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:25:59,832 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-11-18 11:25:59,832 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 11:25:59,921 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-11-18 11:25:59,925 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:25:59,925 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3e8eec20-edbb-4776-aaf6-9c08318fafe2/bin-2019/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:25:59,937 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:26:00,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:26:00,133 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:26:00,140 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2018-11-18 11:26:00,140 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 11:26:00,208 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2018-11-18 11:26:00,238 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-11-18 11:26:00,238 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5] total 8 [2018-11-18 11:26:00,238 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-18 11:26:00,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-18 11:26:00,239 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2018-11-18 11:26:00,239 INFO L87 Difference]: Start difference. First operand 741 states and 945 transitions. Second operand 8 states. [2018-11-18 11:26:00,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:26:00,385 INFO L93 Difference]: Finished difference Result 1471 states and 1878 transitions. [2018-11-18 11:26:00,386 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-18 11:26:00,386 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 65 [2018-11-18 11:26:00,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:26:00,389 INFO L225 Difference]: With dead ends: 1471 [2018-11-18 11:26:00,389 INFO L226 Difference]: Without dead ends: 744 [2018-11-18 11:26:00,391 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 250 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2018-11-18 11:26:00,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2018-11-18 11:26:00,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 744. [2018-11-18 11:26:00,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2018-11-18 11:26:00,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 948 transitions. [2018-11-18 11:26:00,415 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 948 transitions. Word has length 65 [2018-11-18 11:26:00,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:26:00,416 INFO L480 AbstractCegarLoop]: Abstraction has 744 states and 948 transitions. [2018-11-18 11:26:00,416 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-18 11:26:00,416 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 948 transitions. [2018-11-18 11:26:00,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2018-11-18 11:26:00,418 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:26:00,419 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:26:00,419 INFO L423 AbstractCegarLoop]: === Iteration 4 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:26:00,419 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:26:00,419 INFO L82 PathProgramCache]: Analyzing trace with hash -888330320, now seen corresponding path program 2 times [2018-11-18 11:26:00,420 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 11:26:00,420 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3e8eec20-edbb-4776-aaf6-9c08318fafe2/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 11:26:00,482 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2018-11-18 11:26:00,752 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2018-11-18 11:26:00,752 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:26:00,836 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:26:00,857 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2018-11-18 11:26:00,857 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 11:26:00,859 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:26:00,859 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 11:26:00,860 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 11:26:00,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 11:26:00,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 11:26:00,860 INFO L87 Difference]: Start difference. First operand 744 states and 948 transitions. Second operand 3 states. [2018-11-18 11:26:00,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:26:00,889 INFO L93 Difference]: Finished difference Result 746 states and 949 transitions. [2018-11-18 11:26:00,890 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 11:26:00,890 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 68 [2018-11-18 11:26:00,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:26:00,893 INFO L225 Difference]: With dead ends: 746 [2018-11-18 11:26:00,893 INFO L226 Difference]: Without dead ends: 743 [2018-11-18 11:26:00,893 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 66 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 11:26:00,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 743 states. [2018-11-18 11:26:00,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 743 to 743. [2018-11-18 11:26:00,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 743 states. [2018-11-18 11:26:00,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 946 transitions. [2018-11-18 11:26:00,925 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 946 transitions. Word has length 68 [2018-11-18 11:26:00,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:26:00,926 INFO L480 AbstractCegarLoop]: Abstraction has 743 states and 946 transitions. [2018-11-18 11:26:00,926 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 11:26:00,926 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 946 transitions. [2018-11-18 11:26:00,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2018-11-18 11:26:00,927 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:26:00,927 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:26:00,927 INFO L423 AbstractCegarLoop]: === Iteration 5 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:26:00,927 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:26:00,928 INFO L82 PathProgramCache]: Analyzing trace with hash -1768771982, now seen corresponding path program 1 times [2018-11-18 11:26:00,928 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 11:26:00,928 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3e8eec20-edbb-4776-aaf6-9c08318fafe2/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 11:26:00,951 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 11:26:01,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:26:01,428 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:26:01,452 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2018-11-18 11:26:01,452 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 11:26:01,455 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:26:01,455 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 11:26:01,455 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 11:26:01,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 11:26:01,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 11:26:01,456 INFO L87 Difference]: Start difference. First operand 743 states and 946 transitions. Second operand 3 states. [2018-11-18 11:26:01,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:26:01,477 INFO L93 Difference]: Finished difference Result 745 states and 947 transitions. [2018-11-18 11:26:01,478 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 11:26:01,478 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 69 [2018-11-18 11:26:01,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:26:01,481 INFO L225 Difference]: With dead ends: 745 [2018-11-18 11:26:01,481 INFO L226 Difference]: Without dead ends: 742 [2018-11-18 11:26:01,481 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 67 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 11:26:01,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 742 states. [2018-11-18 11:26:01,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 742 to 742. [2018-11-18 11:26:01,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 742 states. [2018-11-18 11:26:01,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 742 states to 742 states and 944 transitions. [2018-11-18 11:26:01,507 INFO L78 Accepts]: Start accepts. Automaton has 742 states and 944 transitions. Word has length 69 [2018-11-18 11:26:01,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:26:01,508 INFO L480 AbstractCegarLoop]: Abstraction has 742 states and 944 transitions. [2018-11-18 11:26:01,508 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 11:26:01,508 INFO L276 IsEmpty]: Start isEmpty. Operand 742 states and 944 transitions. [2018-11-18 11:26:01,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2018-11-18 11:26:01,509 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:26:01,509 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:26:01,509 INFO L423 AbstractCegarLoop]: === Iteration 6 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:26:01,509 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:26:01,510 INFO L82 PathProgramCache]: Analyzing trace with hash 1002312435, now seen corresponding path program 1 times [2018-11-18 11:26:01,510 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 11:26:01,510 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3e8eec20-edbb-4776-aaf6-9c08318fafe2/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 11:26:01,527 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:26:01,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:26:01,689 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:26:01,716 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2018-11-18 11:26:01,716 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 11:26:01,720 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:26:01,720 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 11:26:01,721 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 11:26:01,721 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 11:26:01,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 11:26:01,721 INFO L87 Difference]: Start difference. First operand 742 states and 944 transitions. Second operand 3 states. [2018-11-18 11:26:01,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:26:01,741 INFO L93 Difference]: Finished difference Result 744 states and 945 transitions. [2018-11-18 11:26:01,742 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 11:26:01,742 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 70 [2018-11-18 11:26:01,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:26:01,744 INFO L225 Difference]: With dead ends: 744 [2018-11-18 11:26:01,744 INFO L226 Difference]: Without dead ends: 741 [2018-11-18 11:26:01,745 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 68 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 11:26:01,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2018-11-18 11:26:01,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 741. [2018-11-18 11:26:01,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 741 states. [2018-11-18 11:26:01,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 741 states to 741 states and 942 transitions. [2018-11-18 11:26:01,767 INFO L78 Accepts]: Start accepts. Automaton has 741 states and 942 transitions. Word has length 70 [2018-11-18 11:26:01,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:26:01,767 INFO L480 AbstractCegarLoop]: Abstraction has 741 states and 942 transitions. [2018-11-18 11:26:01,767 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 11:26:01,767 INFO L276 IsEmpty]: Start isEmpty. Operand 741 states and 942 transitions. [2018-11-18 11:26:01,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2018-11-18 11:26:01,768 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:26:01,769 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:26:01,769 INFO L423 AbstractCegarLoop]: === Iteration 7 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:26:01,769 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:26:01,769 INFO L82 PathProgramCache]: Analyzing trace with hash 1006588309, now seen corresponding path program 1 times [2018-11-18 11:26:01,770 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 11:26:01,770 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3e8eec20-edbb-4776-aaf6-9c08318fafe2/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 11:26:01,787 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:26:01,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:26:01,955 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:26:01,971 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2018-11-18 11:26:01,972 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 11:26:01,977 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:26:01,977 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 11:26:01,977 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 11:26:01,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 11:26:01,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 11:26:01,978 INFO L87 Difference]: Start difference. First operand 741 states and 942 transitions. Second operand 3 states. [2018-11-18 11:26:02,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:26:02,081 INFO L93 Difference]: Finished difference Result 2164 states and 2771 transitions. [2018-11-18 11:26:02,082 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 11:26:02,082 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 71 [2018-11-18 11:26:02,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:26:02,091 INFO L225 Difference]: With dead ends: 2164 [2018-11-18 11:26:02,091 INFO L226 Difference]: Without dead ends: 1445 [2018-11-18 11:26:02,093 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 69 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 11:26:02,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1445 states. [2018-11-18 11:26:02,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1445 to 1438. [2018-11-18 11:26:02,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1438 states. [2018-11-18 11:26:02,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1438 states to 1438 states and 1840 transitions. [2018-11-18 11:26:02,163 INFO L78 Accepts]: Start accepts. Automaton has 1438 states and 1840 transitions. Word has length 71 [2018-11-18 11:26:02,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:26:02,163 INFO L480 AbstractCegarLoop]: Abstraction has 1438 states and 1840 transitions. [2018-11-18 11:26:02,163 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 11:26:02,163 INFO L276 IsEmpty]: Start isEmpty. Operand 1438 states and 1840 transitions. [2018-11-18 11:26:02,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-11-18 11:26:02,164 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:26:02,164 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:26:02,165 INFO L423 AbstractCegarLoop]: === Iteration 8 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:26:02,165 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:26:02,165 INFO L82 PathProgramCache]: Analyzing trace with hash 1139145270, now seen corresponding path program 1 times [2018-11-18 11:26:02,165 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 11:26:02,166 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3e8eec20-edbb-4776-aaf6-9c08318fafe2/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 11:26:02,194 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:26:02,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:26:02,376 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:26:02,386 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2018-11-18 11:26:02,386 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 11:26:02,389 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:26:02,389 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 11:26:02,389 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 11:26:02,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 11:26:02,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 11:26:02,390 INFO L87 Difference]: Start difference. First operand 1438 states and 1840 transitions. Second operand 3 states. [2018-11-18 11:26:02,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:26:02,443 INFO L93 Difference]: Finished difference Result 1440 states and 1841 transitions. [2018-11-18 11:26:02,443 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 11:26:02,443 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 72 [2018-11-18 11:26:02,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:26:02,450 INFO L225 Difference]: With dead ends: 1440 [2018-11-18 11:26:02,450 INFO L226 Difference]: Without dead ends: 1423 [2018-11-18 11:26:02,451 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 70 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 11:26:02,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1423 states. [2018-11-18 11:26:02,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1423 to 1423. [2018-11-18 11:26:02,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1423 states. [2018-11-18 11:26:02,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1423 states to 1423 states and 1821 transitions. [2018-11-18 11:26:02,520 INFO L78 Accepts]: Start accepts. Automaton has 1423 states and 1821 transitions. Word has length 72 [2018-11-18 11:26:02,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:26:02,520 INFO L480 AbstractCegarLoop]: Abstraction has 1423 states and 1821 transitions. [2018-11-18 11:26:02,521 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 11:26:02,521 INFO L276 IsEmpty]: Start isEmpty. Operand 1423 states and 1821 transitions. [2018-11-18 11:26:02,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-11-18 11:26:02,523 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:26:02,523 INFO L375 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 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] [2018-11-18 11:26:02,523 INFO L423 AbstractCegarLoop]: === Iteration 9 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:26:02,524 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:26:02,524 INFO L82 PathProgramCache]: Analyzing trace with hash -679993683, now seen corresponding path program 1 times [2018-11-18 11:26:02,524 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 11:26:02,524 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3e8eec20-edbb-4776-aaf6-9c08318fafe2/bin-2019/utaipan/cvc4nyu Starting monitored process 11 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 11 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 11:26:02,549 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:26:02,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:26:02,835 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:26:02,853 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2018-11-18 11:26:02,853 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [MP cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (11)] Exception during sending of exit command (exit): Broken pipe [2018-11-18 11:26:02,857 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:26:02,857 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 11:26:02,857 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 11:26:02,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 11:26:02,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 11:26:02,858 INFO L87 Difference]: Start difference. First operand 1423 states and 1821 transitions. Second operand 3 states. [2018-11-18 11:26:03,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:26:03,118 INFO L93 Difference]: Finished difference Result 3549 states and 4514 transitions. [2018-11-18 11:26:03,119 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 11:26:03,119 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 118 [2018-11-18 11:26:03,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:26:03,128 INFO L225 Difference]: With dead ends: 3549 [2018-11-18 11:26:03,128 INFO L226 Difference]: Without dead ends: 2148 [2018-11-18 11:26:03,132 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 116 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 11:26:03,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2148 states. [2018-11-18 11:26:03,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2148 to 2132. [2018-11-18 11:26:03,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2132 states. [2018-11-18 11:26:03,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2132 states to 2132 states and 2700 transitions. [2018-11-18 11:26:03,235 INFO L78 Accepts]: Start accepts. Automaton has 2132 states and 2700 transitions. Word has length 118 [2018-11-18 11:26:03,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:26:03,235 INFO L480 AbstractCegarLoop]: Abstraction has 2132 states and 2700 transitions. [2018-11-18 11:26:03,235 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 11:26:03,235 INFO L276 IsEmpty]: Start isEmpty. Operand 2132 states and 2700 transitions. [2018-11-18 11:26:03,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2018-11-18 11:26:03,240 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:26:03,240 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 3, 3, 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] [2018-11-18 11:26:03,240 INFO L423 AbstractCegarLoop]: === Iteration 10 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:26:03,240 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:26:03,241 INFO L82 PathProgramCache]: Analyzing trace with hash 2084220516, now seen corresponding path program 1 times [2018-11-18 11:26:03,241 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 11:26:03,241 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3e8eec20-edbb-4776-aaf6-9c08318fafe2/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 11:26:03,269 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:26:03,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:26:03,548 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:26:03,670 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2018-11-18 11:26:03,671 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 11:26:03,673 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:26:03,673 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-11-18 11:26:03,674 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-18 11:26:03,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-18 11:26:03,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-11-18 11:26:03,674 INFO L87 Difference]: Start difference. First operand 2132 states and 2700 transitions. Second operand 8 states. [2018-11-18 11:26:03,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:26:03,770 INFO L93 Difference]: Finished difference Result 3221 states and 4079 transitions. [2018-11-18 11:26:03,770 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-18 11:26:03,770 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 155 [2018-11-18 11:26:03,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:26:03,775 INFO L225 Difference]: With dead ends: 3221 [2018-11-18 11:26:03,776 INFO L226 Difference]: Without dead ends: 2154 [2018-11-18 11:26:03,778 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-11-18 11:26:03,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2154 states. [2018-11-18 11:26:03,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2154 to 2148. [2018-11-18 11:26:03,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2148 states. [2018-11-18 11:26:03,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2148 states to 2148 states and 2716 transitions. [2018-11-18 11:26:03,842 INFO L78 Accepts]: Start accepts. Automaton has 2148 states and 2716 transitions. Word has length 155 [2018-11-18 11:26:03,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:26:03,842 INFO L480 AbstractCegarLoop]: Abstraction has 2148 states and 2716 transitions. [2018-11-18 11:26:03,842 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-18 11:26:03,842 INFO L276 IsEmpty]: Start isEmpty. Operand 2148 states and 2716 transitions. [2018-11-18 11:26:03,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2018-11-18 11:26:03,846 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:26:03,846 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 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] [2018-11-18 11:26:03,846 INFO L423 AbstractCegarLoop]: === Iteration 11 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:26:03,846 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:26:03,846 INFO L82 PathProgramCache]: Analyzing trace with hash 1454271458, now seen corresponding path program 1 times [2018-11-18 11:26:03,847 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 11:26:03,847 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3e8eec20-edbb-4776-aaf6-9c08318fafe2/bin-2019/utaipan/cvc4nyu Starting monitored process 13 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 13 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 11:26:03,864 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:26:04,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:26:04,077 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:26:04,118 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2018-11-18 11:26:04,118 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 11:26:04,120 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:26:04,120 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-18 11:26:04,121 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 11:26:04,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 11:26:04,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-18 11:26:04,121 INFO L87 Difference]: Start difference. First operand 2148 states and 2716 transitions. Second operand 5 states. [2018-11-18 11:26:04,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:26:04,191 INFO L93 Difference]: Finished difference Result 3263 states and 4123 transitions. [2018-11-18 11:26:04,192 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 11:26:04,192 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 164 [2018-11-18 11:26:04,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:26:04,197 INFO L225 Difference]: With dead ends: 3263 [2018-11-18 11:26:04,197 INFO L226 Difference]: Without dead ends: 2176 [2018-11-18 11:26:04,199 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-18 11:26:04,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2176 states. [2018-11-18 11:26:04,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2176 to 2164. [2018-11-18 11:26:04,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2164 states. [2018-11-18 11:26:04,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2164 states to 2164 states and 2732 transitions. [2018-11-18 11:26:04,265 INFO L78 Accepts]: Start accepts. Automaton has 2164 states and 2732 transitions. Word has length 164 [2018-11-18 11:26:04,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:26:04,266 INFO L480 AbstractCegarLoop]: Abstraction has 2164 states and 2732 transitions. [2018-11-18 11:26:04,266 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 11:26:04,266 INFO L276 IsEmpty]: Start isEmpty. Operand 2164 states and 2732 transitions. [2018-11-18 11:26:04,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2018-11-18 11:26:04,268 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:26:04,268 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 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, 1, 1, 1, 1] [2018-11-18 11:26:04,269 INFO L423 AbstractCegarLoop]: === Iteration 12 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:26:04,269 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:26:04,269 INFO L82 PathProgramCache]: Analyzing trace with hash 627461095, now seen corresponding path program 1 times [2018-11-18 11:26:04,270 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 11:26:04,270 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3e8eec20-edbb-4776-aaf6-9c08318fafe2/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 11:26:04,289 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:26:04,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:26:04,533 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:26:04,563 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2018-11-18 11:26:04,563 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 11:26:04,565 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:26:04,565 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 11:26:04,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 11:26:04,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 11:26:04,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 11:26:04,566 INFO L87 Difference]: Start difference. First operand 2164 states and 2732 transitions. Second operand 3 states. [2018-11-18 11:26:04,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:26:04,695 INFO L93 Difference]: Finished difference Result 4317 states and 5471 transitions. [2018-11-18 11:26:04,695 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 11:26:04,695 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 170 [2018-11-18 11:26:04,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:26:04,700 INFO L225 Difference]: With dead ends: 4317 [2018-11-18 11:26:04,700 INFO L226 Difference]: Without dead ends: 2184 [2018-11-18 11:26:04,704 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 168 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 11:26:04,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2184 states. [2018-11-18 11:26:04,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2184 to 2168. [2018-11-18 11:26:04,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2168 states. [2018-11-18 11:26:04,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2168 states to 2168 states and 2736 transitions. [2018-11-18 11:26:04,766 INFO L78 Accepts]: Start accepts. Automaton has 2168 states and 2736 transitions. Word has length 170 [2018-11-18 11:26:04,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:26:04,766 INFO L480 AbstractCegarLoop]: Abstraction has 2168 states and 2736 transitions. [2018-11-18 11:26:04,766 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 11:26:04,767 INFO L276 IsEmpty]: Start isEmpty. Operand 2168 states and 2736 transitions. [2018-11-18 11:26:04,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2018-11-18 11:26:04,770 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:26:04,770 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 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, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:26:04,770 INFO L423 AbstractCegarLoop]: === Iteration 13 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:26:04,770 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:26:04,770 INFO L82 PathProgramCache]: Analyzing trace with hash -866859123, now seen corresponding path program 1 times [2018-11-18 11:26:04,771 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 11:26:04,771 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3e8eec20-edbb-4776-aaf6-9c08318fafe2/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 11:26:04,789 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:26:05,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:26:05,019 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:26:05,036 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2018-11-18 11:26:05,036 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 11:26:05,038 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:26:05,039 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 11:26:05,039 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 11:26:05,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 11:26:05,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 11:26:05,039 INFO L87 Difference]: Start difference. First operand 2168 states and 2736 transitions. Second operand 3 states. [2018-11-18 11:26:05,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:26:05,144 INFO L93 Difference]: Finished difference Result 4325 states and 5475 transitions. [2018-11-18 11:26:05,144 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 11:26:05,144 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 173 [2018-11-18 11:26:05,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:26:05,150 INFO L225 Difference]: With dead ends: 4325 [2018-11-18 11:26:05,150 INFO L226 Difference]: Without dead ends: 2188 [2018-11-18 11:26:05,153 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 171 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 11:26:05,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2188 states. [2018-11-18 11:26:05,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2188 to 2172. [2018-11-18 11:26:05,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2172 states. [2018-11-18 11:26:05,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2172 states to 2172 states and 2740 transitions. [2018-11-18 11:26:05,215 INFO L78 Accepts]: Start accepts. Automaton has 2172 states and 2740 transitions. Word has length 173 [2018-11-18 11:26:05,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:26:05,215 INFO L480 AbstractCegarLoop]: Abstraction has 2172 states and 2740 transitions. [2018-11-18 11:26:05,215 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 11:26:05,215 INFO L276 IsEmpty]: Start isEmpty. Operand 2172 states and 2740 transitions. [2018-11-18 11:26:05,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2018-11-18 11:26:05,219 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:26:05,219 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 11:26:05,220 INFO L423 AbstractCegarLoop]: === Iteration 14 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:26:05,220 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:26:05,220 INFO L82 PathProgramCache]: Analyzing trace with hash -421035273, now seen corresponding path program 1 times [2018-11-18 11:26:05,221 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 11:26:05,221 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3e8eec20-edbb-4776-aaf6-9c08318fafe2/bin-2019/utaipan/cvc4nyu Starting monitored process 16 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 16 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 11:26:05,239 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:26:05,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:26:05,875 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:26:05,962 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2018-11-18 11:26:05,962 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 11:26:05,965 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:26:05,965 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-11-18 11:26:05,966 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-18 11:26:05,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-18 11:26:05,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2018-11-18 11:26:05,966 INFO L87 Difference]: Start difference. First operand 2172 states and 2740 transitions. Second operand 8 states. [2018-11-18 11:26:12,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:26:12,690 INFO L93 Difference]: Finished difference Result 5049 states and 6387 transitions. [2018-11-18 11:26:12,692 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-18 11:26:12,692 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 176 [2018-11-18 11:26:12,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:26:12,698 INFO L225 Difference]: With dead ends: 5049 [2018-11-18 11:26:12,699 INFO L226 Difference]: Without dead ends: 2908 [2018-11-18 11:26:12,702 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2018-11-18 11:26:12,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2908 states. [2018-11-18 11:26:12,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2908 to 2856. [2018-11-18 11:26:12,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2856 states. [2018-11-18 11:26:12,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2856 states to 2856 states and 3608 transitions. [2018-11-18 11:26:12,782 INFO L78 Accepts]: Start accepts. Automaton has 2856 states and 3608 transitions. Word has length 176 [2018-11-18 11:26:12,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:26:12,782 INFO L480 AbstractCegarLoop]: Abstraction has 2856 states and 3608 transitions. [2018-11-18 11:26:12,783 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-18 11:26:12,783 INFO L276 IsEmpty]: Start isEmpty. Operand 2856 states and 3608 transitions. [2018-11-18 11:26:12,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-11-18 11:26:12,786 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:26:12,787 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:26:12,787 INFO L423 AbstractCegarLoop]: === Iteration 15 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:26:12,787 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:26:12,787 INFO L82 PathProgramCache]: Analyzing trace with hash -1248901824, now seen corresponding path program 1 times [2018-11-18 11:26:12,788 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 11:26:12,788 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3e8eec20-edbb-4776-aaf6-9c08318fafe2/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 11:26:12,805 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:26:13,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:26:13,081 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:26:13,116 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2018-11-18 11:26:13,116 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 11:26:13,118 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:26:13,118 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 11:26:13,119 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 11:26:13,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 11:26:13,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 11:26:13,119 INFO L87 Difference]: Start difference. First operand 2856 states and 3608 transitions. Second operand 3 states. [2018-11-18 11:26:13,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:26:13,388 INFO L93 Difference]: Finished difference Result 6733 states and 8574 transitions. [2018-11-18 11:26:13,389 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 11:26:13,389 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 210 [2018-11-18 11:26:13,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:26:13,402 INFO L225 Difference]: With dead ends: 6733 [2018-11-18 11:26:13,403 INFO L226 Difference]: Without dead ends: 3908 [2018-11-18 11:26:13,409 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 208 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 11:26:13,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3908 states. [2018-11-18 11:26:13,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3908 to 3862. [2018-11-18 11:26:13,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3862 states. [2018-11-18 11:26:13,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3862 states to 3862 states and 4930 transitions. [2018-11-18 11:26:13,575 INFO L78 Accepts]: Start accepts. Automaton has 3862 states and 4930 transitions. Word has length 210 [2018-11-18 11:26:13,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:26:13,576 INFO L480 AbstractCegarLoop]: Abstraction has 3862 states and 4930 transitions. [2018-11-18 11:26:13,576 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 11:26:13,576 INFO L276 IsEmpty]: Start isEmpty. Operand 3862 states and 4930 transitions. [2018-11-18 11:26:13,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-11-18 11:26:13,582 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:26:13,583 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:26:13,583 INFO L423 AbstractCegarLoop]: === Iteration 16 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:26:13,583 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:26:13,583 INFO L82 PathProgramCache]: Analyzing trace with hash -565985344, now seen corresponding path program 2 times [2018-11-18 11:26:13,584 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 11:26:13,584 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3e8eec20-edbb-4776-aaf6-9c08318fafe2/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 11:26:13,609 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2018-11-18 11:26:13,991 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2018-11-18 11:26:13,991 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:26:14,156 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:26:14,175 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2018-11-18 11:26:14,175 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 11:26:14,178 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:26:14,178 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 11:26:14,178 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 11:26:14,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 11:26:14,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 11:26:14,179 INFO L87 Difference]: Start difference. First operand 3862 states and 4930 transitions. Second operand 3 states. [2018-11-18 11:26:14,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:26:14,263 INFO L93 Difference]: Finished difference Result 6831 states and 8745 transitions. [2018-11-18 11:26:14,264 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 11:26:14,264 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 210 [2018-11-18 11:26:14,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:26:14,273 INFO L225 Difference]: With dead ends: 6831 [2018-11-18 11:26:14,273 INFO L226 Difference]: Without dead ends: 3846 [2018-11-18 11:26:14,278 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 208 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 11:26:14,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3846 states. [2018-11-18 11:26:14,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3846 to 3846. [2018-11-18 11:26:14,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3846 states. [2018-11-18 11:26:14,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3846 states to 3846 states and 4898 transitions. [2018-11-18 11:26:14,380 INFO L78 Accepts]: Start accepts. Automaton has 3846 states and 4898 transitions. Word has length 210 [2018-11-18 11:26:14,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:26:14,380 INFO L480 AbstractCegarLoop]: Abstraction has 3846 states and 4898 transitions. [2018-11-18 11:26:14,380 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 11:26:14,380 INFO L276 IsEmpty]: Start isEmpty. Operand 3846 states and 4898 transitions. [2018-11-18 11:26:14,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2018-11-18 11:26:14,385 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:26:14,386 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:26:14,386 INFO L423 AbstractCegarLoop]: === Iteration 17 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:26:14,386 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:26:14,386 INFO L82 PathProgramCache]: Analyzing trace with hash -1595974844, now seen corresponding path program 1 times [2018-11-18 11:26:14,387 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 11:26:14,387 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3e8eec20-edbb-4776-aaf6-9c08318fafe2/bin-2019/utaipan/cvc4nyu Starting monitored process 19 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 19 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 11:26:14,406 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-11-18 11:26:14,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:26:14,640 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:26:14,667 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2018-11-18 11:26:14,667 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 11:26:14,670 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:26:14,670 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 11:26:14,671 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 11:26:14,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 11:26:14,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 11:26:14,671 INFO L87 Difference]: Start difference. First operand 3846 states and 4898 transitions. Second operand 3 states. [2018-11-18 11:26:16,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:26:16,947 INFO L93 Difference]: Finished difference Result 8929 states and 11482 transitions. [2018-11-18 11:26:16,948 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 11:26:16,948 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 210 [2018-11-18 11:26:16,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:26:16,959 INFO L225 Difference]: With dead ends: 8929 [2018-11-18 11:26:16,959 INFO L226 Difference]: Without dead ends: 5114 [2018-11-18 11:26:16,965 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 208 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 11:26:16,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5114 states. [2018-11-18 11:26:17,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5114 to 5068. [2018-11-18 11:26:17,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5068 states. [2018-11-18 11:26:17,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5068 states to 5068 states and 6476 transitions. [2018-11-18 11:26:17,137 INFO L78 Accepts]: Start accepts. Automaton has 5068 states and 6476 transitions. Word has length 210 [2018-11-18 11:26:17,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:26:17,138 INFO L480 AbstractCegarLoop]: Abstraction has 5068 states and 6476 transitions. [2018-11-18 11:26:17,138 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 11:26:17,138 INFO L276 IsEmpty]: Start isEmpty. Operand 5068 states and 6476 transitions. [2018-11-18 11:26:17,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2018-11-18 11:26:17,143 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:26:17,143 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:26:17,144 INFO L423 AbstractCegarLoop]: === Iteration 18 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:26:17,144 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:26:17,144 INFO L82 PathProgramCache]: Analyzing trace with hash 1019452763, now seen corresponding path program 1 times [2018-11-18 11:26:17,145 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 11:26:17,145 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3e8eec20-edbb-4776-aaf6-9c08318fafe2/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 11:26:17,163 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:26:17,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:26:17,917 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:26:18,036 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2018-11-18 11:26:18,036 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 11:26:18,040 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:26:18,040 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-11-18 11:26:18,040 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-18 11:26:18,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-18 11:26:18,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2018-11-18 11:26:18,041 INFO L87 Difference]: Start difference. First operand 5068 states and 6476 transitions. Second operand 11 states. [2018-11-18 11:26:18,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:26:18,211 INFO L93 Difference]: Finished difference Result 10285 states and 13137 transitions. [2018-11-18 11:26:18,212 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-18 11:26:18,212 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 240 [2018-11-18 11:26:18,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:26:18,221 INFO L225 Difference]: With dead ends: 10285 [2018-11-18 11:26:18,222 INFO L226 Difference]: Without dead ends: 5248 [2018-11-18 11:26:18,227 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 230 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2018-11-18 11:26:18,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5248 states. [2018-11-18 11:26:18,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5248 to 5232. [2018-11-18 11:26:18,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5232 states. [2018-11-18 11:26:18,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5232 states to 5232 states and 6652 transitions. [2018-11-18 11:26:18,423 INFO L78 Accepts]: Start accepts. Automaton has 5232 states and 6652 transitions. Word has length 240 [2018-11-18 11:26:18,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:26:18,424 INFO L480 AbstractCegarLoop]: Abstraction has 5232 states and 6652 transitions. [2018-11-18 11:26:18,424 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-18 11:26:18,424 INFO L276 IsEmpty]: Start isEmpty. Operand 5232 states and 6652 transitions. [2018-11-18 11:26:18,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2018-11-18 11:26:18,429 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:26:18,429 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:26:18,430 INFO L423 AbstractCegarLoop]: === Iteration 19 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:26:18,430 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:26:18,430 INFO L82 PathProgramCache]: Analyzing trace with hash -1345283684, now seen corresponding path program 1 times [2018-11-18 11:26:18,431 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 11:26:18,431 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3e8eec20-edbb-4776-aaf6-9c08318fafe2/bin-2019/utaipan/cvc4nyu Starting monitored process 21 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 21 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 11:26:18,449 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:26:18,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:26:19,197 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:26:19,249 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-11-18 11:26:19,249 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 11:26:19,254 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:26:19,254 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-18 11:26:19,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 11:26:19,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 11:26:19,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-18 11:26:19,255 INFO L87 Difference]: Start difference. First operand 5232 states and 6652 transitions. Second operand 5 states. [2018-11-18 11:26:19,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:26:19,403 INFO L93 Difference]: Finished difference Result 9357 states and 11931 transitions. [2018-11-18 11:26:19,403 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 11:26:19,403 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 240 [2018-11-18 11:26:19,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:26:19,415 INFO L225 Difference]: With dead ends: 9357 [2018-11-18 11:26:19,415 INFO L226 Difference]: Without dead ends: 5244 [2018-11-18 11:26:19,422 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 236 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 11:26:19,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5244 states. [2018-11-18 11:26:19,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5244 to 5244. [2018-11-18 11:26:19,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5244 states. [2018-11-18 11:26:19,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5244 states to 5244 states and 6664 transitions. [2018-11-18 11:26:19,625 INFO L78 Accepts]: Start accepts. Automaton has 5244 states and 6664 transitions. Word has length 240 [2018-11-18 11:26:19,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:26:19,625 INFO L480 AbstractCegarLoop]: Abstraction has 5244 states and 6664 transitions. [2018-11-18 11:26:19,625 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 11:26:19,625 INFO L276 IsEmpty]: Start isEmpty. Operand 5244 states and 6664 transitions. [2018-11-18 11:26:19,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2018-11-18 11:26:19,631 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:26:19,631 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:26:19,631 INFO L423 AbstractCegarLoop]: === Iteration 20 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:26:19,632 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:26:19,632 INFO L82 PathProgramCache]: Analyzing trace with hash 772141864, now seen corresponding path program 1 times [2018-11-18 11:26:19,632 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 11:26:19,633 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3e8eec20-edbb-4776-aaf6-9c08318fafe2/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 11:26:19,651 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:26:20,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:26:20,416 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:26:20,448 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-11-18 11:26:20,448 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 11:26:20,626 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-11-18 11:26:20,629 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:26:20,629 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3e8eec20-edbb-4776-aaf6-9c08318fafe2/bin-2019/utaipan/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:26:20,638 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:26:20,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:26:20,838 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:26:20,926 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2018-11-18 11:26:20,926 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 11:26:20,944 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2018-11-18 11:26:20,944 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 13 [2018-11-18 11:26:20,945 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-11-18 11:26:20,945 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-11-18 11:26:20,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2018-11-18 11:26:20,946 INFO L87 Difference]: Start difference. First operand 5244 states and 6664 transitions. Second operand 13 states. [2018-11-18 11:26:21,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:26:21,421 INFO L93 Difference]: Finished difference Result 9669 states and 12345 transitions. [2018-11-18 11:26:21,421 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-18 11:26:21,421 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 241 [2018-11-18 11:26:21,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:26:21,430 INFO L225 Difference]: With dead ends: 9669 [2018-11-18 11:26:21,430 INFO L226 Difference]: Without dead ends: 5544 [2018-11-18 11:26:21,436 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 725 GetRequests, 710 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2018-11-18 11:26:21,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5544 states. [2018-11-18 11:26:21,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5544 to 5436. [2018-11-18 11:26:21,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5436 states. [2018-11-18 11:26:21,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5436 states to 5436 states and 6940 transitions. [2018-11-18 11:26:21,607 INFO L78 Accepts]: Start accepts. Automaton has 5436 states and 6940 transitions. Word has length 241 [2018-11-18 11:26:21,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:26:21,608 INFO L480 AbstractCegarLoop]: Abstraction has 5436 states and 6940 transitions. [2018-11-18 11:26:21,608 INFO L481 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-11-18 11:26:21,608 INFO L276 IsEmpty]: Start isEmpty. Operand 5436 states and 6940 transitions. [2018-11-18 11:26:21,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2018-11-18 11:26:21,613 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:26:21,613 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:26:21,613 INFO L423 AbstractCegarLoop]: === Iteration 21 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:26:21,613 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:26:21,614 INFO L82 PathProgramCache]: Analyzing trace with hash 160165374, now seen corresponding path program 1 times [2018-11-18 11:26:21,614 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 11:26:21,615 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3e8eec20-edbb-4776-aaf6-9c08318fafe2/bin-2019/utaipan/cvc4nyu Starting monitored process 24 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 24 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 11:26:21,650 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:26:21,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:26:21,943 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:26:21,998 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2018-11-18 11:26:21,998 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 11:26:22,000 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:26:22,000 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2018-11-18 11:26:22,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-11-18 11:26:22,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-11-18 11:26:22,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2018-11-18 11:26:22,001 INFO L87 Difference]: Start difference. First operand 5436 states and 6940 transitions. Second operand 8 states. [2018-11-18 11:26:24,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:26:24,493 INFO L93 Difference]: Finished difference Result 14214 states and 18098 transitions. [2018-11-18 11:26:24,493 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-11-18 11:26:24,493 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 250 [2018-11-18 11:26:24,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:26:24,513 INFO L225 Difference]: With dead ends: 14214 [2018-11-18 11:26:24,513 INFO L226 Difference]: Without dead ends: 9921 [2018-11-18 11:26:24,522 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 255 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2018-11-18 11:26:24,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9921 states. [2018-11-18 11:26:24,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9921 to 8484. [2018-11-18 11:26:24,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8484 states. [2018-11-18 11:26:24,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8484 states to 8484 states and 10817 transitions. [2018-11-18 11:26:24,786 INFO L78 Accepts]: Start accepts. Automaton has 8484 states and 10817 transitions. Word has length 250 [2018-11-18 11:26:24,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:26:24,786 INFO L480 AbstractCegarLoop]: Abstraction has 8484 states and 10817 transitions. [2018-11-18 11:26:24,787 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-11-18 11:26:24,787 INFO L276 IsEmpty]: Start isEmpty. Operand 8484 states and 10817 transitions. [2018-11-18 11:26:24,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2018-11-18 11:26:24,793 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:26:24,794 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:26:24,794 INFO L423 AbstractCegarLoop]: === Iteration 22 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:26:24,794 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:26:24,794 INFO L82 PathProgramCache]: Analyzing trace with hash 379020092, now seen corresponding path program 1 times [2018-11-18 11:26:24,794 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 11:26:24,795 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3e8eec20-edbb-4776-aaf6-9c08318fafe2/bin-2019/utaipan/cvc4nyu Starting monitored process 25 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 25 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 11:26:24,819 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:26:25,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:26:25,057 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:26:25,105 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 36 proven. 12 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-11-18 11:26:25,105 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 11:26:25,234 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2018-11-18 11:26:25,237 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:26:25,237 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3e8eec20-edbb-4776-aaf6-9c08318fafe2/bin-2019/utaipan/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:26:25,245 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:26:25,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:26:25,439 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:26:25,471 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 36 proven. 12 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2018-11-18 11:26:25,472 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 11:26:25,629 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2018-11-18 11:26:25,647 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-11-18 11:26:25,647 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4, 4] total 6 [2018-11-18 11:26:25,647 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-18 11:26:25,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-18 11:26:25,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-18 11:26:25,648 INFO L87 Difference]: Start difference. First operand 8484 states and 10817 transitions. Second operand 6 states. [2018-11-18 11:26:30,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:26:30,044 INFO L93 Difference]: Finished difference Result 50725 states and 64702 transitions. [2018-11-18 11:26:30,044 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-18 11:26:30,045 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 250 [2018-11-18 11:26:30,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:26:30,144 INFO L225 Difference]: With dead ends: 50725 [2018-11-18 11:26:30,144 INFO L226 Difference]: Without dead ends: 50709 [2018-11-18 11:26:30,155 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1000 GetRequests, 995 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-11-18 11:26:30,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50709 states. [2018-11-18 11:26:31,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50709 to 49752. [2018-11-18 11:26:31,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49752 states. [2018-11-18 11:26:31,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49752 states to 49752 states and 63595 transitions. [2018-11-18 11:26:31,582 INFO L78 Accepts]: Start accepts. Automaton has 49752 states and 63595 transitions. Word has length 250 [2018-11-18 11:26:31,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:26:31,582 INFO L480 AbstractCegarLoop]: Abstraction has 49752 states and 63595 transitions. [2018-11-18 11:26:31,582 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-18 11:26:31,582 INFO L276 IsEmpty]: Start isEmpty. Operand 49752 states and 63595 transitions. [2018-11-18 11:26:31,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2018-11-18 11:26:31,603 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:26:31,603 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:26:31,603 INFO L423 AbstractCegarLoop]: === Iteration 23 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:26:31,603 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:26:31,603 INFO L82 PathProgramCache]: Analyzing trace with hash -1453004063, now seen corresponding path program 1 times [2018-11-18 11:26:31,604 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 11:26:31,604 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3e8eec20-edbb-4776-aaf6-9c08318fafe2/bin-2019/utaipan/cvc4nyu Starting monitored process 27 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 27 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 11:26:31,620 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:26:31,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:26:31,854 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:26:31,898 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2018-11-18 11:26:31,899 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 11:26:31,901 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:26:31,901 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-18 11:26:31,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 11:26:31,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 11:26:31,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-18 11:26:31,902 INFO L87 Difference]: Start difference. First operand 49752 states and 63595 transitions. Second operand 5 states. [2018-11-18 11:26:36,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:26:36,008 INFO L93 Difference]: Finished difference Result 124674 states and 157731 transitions. [2018-11-18 11:26:36,008 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-18 11:26:36,009 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 249 [2018-11-18 11:26:36,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:26:36,138 INFO L225 Difference]: With dead ends: 124674 [2018-11-18 11:26:36,138 INFO L226 Difference]: Without dead ends: 74953 [2018-11-18 11:26:36,183 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 245 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 11:26:36,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74953 states. [2018-11-18 11:26:37,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74953 to 50232. [2018-11-18 11:26:37,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50232 states. [2018-11-18 11:26:38,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50232 states to 50232 states and 64075 transitions. [2018-11-18 11:26:38,027 INFO L78 Accepts]: Start accepts. Automaton has 50232 states and 64075 transitions. Word has length 249 [2018-11-18 11:26:38,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:26:38,027 INFO L480 AbstractCegarLoop]: Abstraction has 50232 states and 64075 transitions. [2018-11-18 11:26:38,027 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 11:26:38,027 INFO L276 IsEmpty]: Start isEmpty. Operand 50232 states and 64075 transitions. [2018-11-18 11:26:38,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2018-11-18 11:26:38,045 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:26:38,046 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:26:38,046 INFO L423 AbstractCegarLoop]: === Iteration 24 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:26:38,046 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:26:38,046 INFO L82 PathProgramCache]: Analyzing trace with hash -1762840386, now seen corresponding path program 1 times [2018-11-18 11:26:38,047 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 11:26:38,047 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3e8eec20-edbb-4776-aaf6-9c08318fafe2/bin-2019/utaipan/cvc4nyu Starting monitored process 28 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 28 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 11:26:38,063 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:26:38,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:26:38,281 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:26:38,348 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2018-11-18 11:26:38,348 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 11:26:38,349 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:26:38,349 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-11-18 11:26:38,350 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-11-18 11:26:38,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 11:26:38,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-11-18 11:26:38,350 INFO L87 Difference]: Start difference. First operand 50232 states and 64075 transitions. Second operand 5 states. [2018-11-18 11:26:40,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:26:40,589 INFO L93 Difference]: Finished difference Result 119166 states and 150375 transitions. [2018-11-18 11:26:40,589 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-18 11:26:40,589 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 250 [2018-11-18 11:26:40,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:26:40,729 INFO L225 Difference]: With dead ends: 119166 [2018-11-18 11:26:40,729 INFO L226 Difference]: Without dead ends: 75625 [2018-11-18 11:26:40,778 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 246 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 11:26:40,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75625 states. [2018-11-18 11:26:42,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75625 to 50552. [2018-11-18 11:26:42,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50552 states. [2018-11-18 11:26:42,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50552 states to 50552 states and 64419 transitions. [2018-11-18 11:26:42,741 INFO L78 Accepts]: Start accepts. Automaton has 50552 states and 64419 transitions. Word has length 250 [2018-11-18 11:26:42,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:26:42,741 INFO L480 AbstractCegarLoop]: Abstraction has 50552 states and 64419 transitions. [2018-11-18 11:26:42,741 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-11-18 11:26:42,741 INFO L276 IsEmpty]: Start isEmpty. Operand 50552 states and 64419 transitions. [2018-11-18 11:26:42,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2018-11-18 11:26:42,762 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:26:42,763 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:26:42,763 INFO L423 AbstractCegarLoop]: === Iteration 25 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:26:42,763 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:26:42,763 INFO L82 PathProgramCache]: Analyzing trace with hash -1079219, now seen corresponding path program 1 times [2018-11-18 11:26:42,764 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 11:26:42,764 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3e8eec20-edbb-4776-aaf6-9c08318fafe2/bin-2019/utaipan/cvc4nyu Starting monitored process 29 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 29 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 11:26:42,781 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:26:43,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:26:43,470 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:26:43,607 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2018-11-18 11:26:43,608 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 11:26:43,611 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:26:43,611 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2018-11-18 11:26:43,612 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-18 11:26:43,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-18 11:26:43,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2018-11-18 11:26:43,612 INFO L87 Difference]: Start difference. First operand 50552 states and 64419 transitions. Second operand 11 states. [2018-11-18 11:27:01,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:27:01,045 INFO L93 Difference]: Finished difference Result 121909 states and 155966 transitions. [2018-11-18 11:27:01,047 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-11-18 11:27:01,047 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 263 [2018-11-18 11:27:01,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:27:01,171 INFO L225 Difference]: With dead ends: 121909 [2018-11-18 11:27:01,171 INFO L226 Difference]: Without dead ends: 78048 [2018-11-18 11:27:01,224 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 267 GetRequests, 252 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2018-11-18 11:27:01,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78048 states. [2018-11-18 11:27:05,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78048 to 76040. [2018-11-18 11:27:05,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76040 states. [2018-11-18 11:27:05,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76040 states to 76040 states and 97443 transitions. [2018-11-18 11:27:05,113 INFO L78 Accepts]: Start accepts. Automaton has 76040 states and 97443 transitions. Word has length 263 [2018-11-18 11:27:05,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:27:05,113 INFO L480 AbstractCegarLoop]: Abstraction has 76040 states and 97443 transitions. [2018-11-18 11:27:05,113 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-18 11:27:05,113 INFO L276 IsEmpty]: Start isEmpty. Operand 76040 states and 97443 transitions. [2018-11-18 11:27:05,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2018-11-18 11:27:05,143 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:27:05,143 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:27:05,143 INFO L423 AbstractCegarLoop]: === Iteration 26 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:27:05,143 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:27:05,143 INFO L82 PathProgramCache]: Analyzing trace with hash 377869296, now seen corresponding path program 1 times [2018-11-18 11:27:05,144 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 11:27:05,144 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3e8eec20-edbb-4776-aaf6-9c08318fafe2/bin-2019/utaipan/cvc4nyu Starting monitored process 30 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 30 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 11:27:05,166 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:27:05,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:27:05,418 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:27:05,475 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2018-11-18 11:27:05,475 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 11:27:05,477 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:27:05,477 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 11:27:05,478 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 11:27:05,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 11:27:05,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 11:27:05,478 INFO L87 Difference]: Start difference. First operand 76040 states and 97443 transitions. Second operand 3 states. [2018-11-18 11:27:09,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:27:09,523 INFO L93 Difference]: Finished difference Result 136878 states and 175594 transitions. [2018-11-18 11:27:09,524 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 11:27:09,524 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 263 [2018-11-18 11:27:09,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:27:09,621 INFO L225 Difference]: With dead ends: 136878 [2018-11-18 11:27:09,621 INFO L226 Difference]: Without dead ends: 60869 [2018-11-18 11:27:09,690 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 261 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 11:27:09,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60869 states. [2018-11-18 11:27:11,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60869 to 60393. [2018-11-18 11:27:11,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60393 states. [2018-11-18 11:27:12,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60393 states to 60393 states and 76291 transitions. [2018-11-18 11:27:12,046 INFO L78 Accepts]: Start accepts. Automaton has 60393 states and 76291 transitions. Word has length 263 [2018-11-18 11:27:12,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:27:12,046 INFO L480 AbstractCegarLoop]: Abstraction has 60393 states and 76291 transitions. [2018-11-18 11:27:12,046 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 11:27:12,046 INFO L276 IsEmpty]: Start isEmpty. Operand 60393 states and 76291 transitions. [2018-11-18 11:27:12,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2018-11-18 11:27:12,067 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:27:12,067 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 7, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:27:12,067 INFO L423 AbstractCegarLoop]: === Iteration 27 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:27:12,067 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:27:12,067 INFO L82 PathProgramCache]: Analyzing trace with hash -115195395, now seen corresponding path program 1 times [2018-11-18 11:27:12,068 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 11:27:12,068 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3e8eec20-edbb-4776-aaf6-9c08318fafe2/bin-2019/utaipan/cvc4nyu Starting monitored process 31 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 31 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 11:27:12,084 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:27:12,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:27:12,316 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:27:12,356 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2018-11-18 11:27:12,356 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 11:27:12,358 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:27:12,358 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 11:27:12,358 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 11:27:12,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 11:27:12,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 11:27:12,359 INFO L87 Difference]: Start difference. First operand 60393 states and 76291 transitions. Second operand 3 states. [2018-11-18 11:27:15,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:27:15,696 INFO L93 Difference]: Finished difference Result 91398 states and 115840 transitions. [2018-11-18 11:27:15,696 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 11:27:15,696 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 266 [2018-11-18 11:27:15,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:27:15,730 INFO L225 Difference]: With dead ends: 91398 [2018-11-18 11:27:15,730 INFO L226 Difference]: Without dead ends: 28652 [2018-11-18 11:27:15,760 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 264 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 11:27:15,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28652 states. [2018-11-18 11:27:16,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28652 to 28299. [2018-11-18 11:27:16,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28299 states. [2018-11-18 11:27:16,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28299 states to 28299 states and 35545 transitions. [2018-11-18 11:27:16,753 INFO L78 Accepts]: Start accepts. Automaton has 28299 states and 35545 transitions. Word has length 266 [2018-11-18 11:27:16,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:27:16,754 INFO L480 AbstractCegarLoop]: Abstraction has 28299 states and 35545 transitions. [2018-11-18 11:27:16,754 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 11:27:16,754 INFO L276 IsEmpty]: Start isEmpty. Operand 28299 states and 35545 transitions. [2018-11-18 11:27:16,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2018-11-18 11:27:16,764 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:27:16,764 INFO L375 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:27:16,764 INFO L423 AbstractCegarLoop]: === Iteration 28 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:27:16,764 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:27:16,764 INFO L82 PathProgramCache]: Analyzing trace with hash -1635561599, now seen corresponding path program 1 times [2018-11-18 11:27:16,765 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 11:27:16,765 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3e8eec20-edbb-4776-aaf6-9c08318fafe2/bin-2019/utaipan/cvc4nyu Starting monitored process 32 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 32 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 11:27:16,781 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:27:17,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:27:17,028 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:27:17,074 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2018-11-18 11:27:17,075 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 11:27:17,077 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:27:17,077 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-18 11:27:17,078 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-11-18 11:27:17,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 11:27:17,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 11:27:17,078 INFO L87 Difference]: Start difference. First operand 28299 states and 35545 transitions. Second operand 3 states. [2018-11-18 11:27:18,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:27:18,069 INFO L93 Difference]: Finished difference Result 51443 states and 65111 transitions. [2018-11-18 11:27:18,070 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 11:27:18,070 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 273 [2018-11-18 11:27:18,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:27:18,107 INFO L225 Difference]: With dead ends: 51443 [2018-11-18 11:27:18,107 INFO L226 Difference]: Without dead ends: 28859 [2018-11-18 11:27:18,130 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 271 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 11:27:18,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28859 states. [2018-11-18 11:27:19,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28859 to 28339. [2018-11-18 11:27:19,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28339 states. [2018-11-18 11:27:19,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28339 states to 28339 states and 35585 transitions. [2018-11-18 11:27:19,300 INFO L78 Accepts]: Start accepts. Automaton has 28339 states and 35585 transitions. Word has length 273 [2018-11-18 11:27:19,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:27:19,301 INFO L480 AbstractCegarLoop]: Abstraction has 28339 states and 35585 transitions. [2018-11-18 11:27:19,301 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-11-18 11:27:19,301 INFO L276 IsEmpty]: Start isEmpty. Operand 28339 states and 35585 transitions. [2018-11-18 11:27:19,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2018-11-18 11:27:19,311 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:27:19,311 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:27:19,311 INFO L423 AbstractCegarLoop]: === Iteration 29 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:27:19,311 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:27:19,312 INFO L82 PathProgramCache]: Analyzing trace with hash -152792199, now seen corresponding path program 1 times [2018-11-18 11:27:19,312 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 11:27:19,312 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3e8eec20-edbb-4776-aaf6-9c08318fafe2/bin-2019/utaipan/cvc4nyu Starting monitored process 33 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 33 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 11:27:19,327 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:27:19,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:27:19,556 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:27:19,616 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2018-11-18 11:27:19,617 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 11:27:19,618 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 11:27:19,619 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-18 11:27:19,619 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-18 11:27:19,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-18 11:27:19,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-11-18 11:27:19,619 INFO L87 Difference]: Start difference. First operand 28339 states and 35585 transitions. Second operand 6 states. [2018-11-18 11:27:22,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:27:22,924 INFO L93 Difference]: Finished difference Result 58596 states and 73447 transitions. [2018-11-18 11:27:22,924 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-18 11:27:22,924 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 275 [2018-11-18 11:27:22,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:27:22,973 INFO L225 Difference]: With dead ends: 58596 [2018-11-18 11:27:22,973 INFO L226 Difference]: Without dead ends: 33597 [2018-11-18 11:27:22,998 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 270 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2018-11-18 11:27:23,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33597 states. [2018-11-18 11:27:24,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33597 to 26050. [2018-11-18 11:27:24,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26050 states. [2018-11-18 11:27:24,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26050 states to 26050 states and 32537 transitions. [2018-11-18 11:27:24,109 INFO L78 Accepts]: Start accepts. Automaton has 26050 states and 32537 transitions. Word has length 275 [2018-11-18 11:27:24,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:27:24,109 INFO L480 AbstractCegarLoop]: Abstraction has 26050 states and 32537 transitions. [2018-11-18 11:27:24,109 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-18 11:27:24,109 INFO L276 IsEmpty]: Start isEmpty. Operand 26050 states and 32537 transitions. [2018-11-18 11:27:24,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2018-11-18 11:27:24,117 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:27:24,117 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:27:24,117 INFO L423 AbstractCegarLoop]: === Iteration 30 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:27:24,118 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:27:24,118 INFO L82 PathProgramCache]: Analyzing trace with hash 672498387, now seen corresponding path program 1 times [2018-11-18 11:27:24,118 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 11:27:24,119 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3e8eec20-edbb-4776-aaf6-9c08318fafe2/bin-2019/utaipan/cvc4nyu Starting monitored process 34 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 34 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 11:27:24,138 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:27:24,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:27:24,850 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:27:24,933 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 33 proven. 3 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-11-18 11:27:24,933 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 11:27:25,238 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 18 proven. 3 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2018-11-18 11:27:25,241 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:27:25,241 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3e8eec20-edbb-4776-aaf6-9c08318fafe2/bin-2019/utaipan/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:27:25,250 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 11:27:25,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 11:27:25,586 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:27:25,606 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 33 proven. 3 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-11-18 11:27:25,606 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 11:27:25,823 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 18 proven. 3 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2018-11-18 11:27:25,852 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-11-18 11:27:25,852 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7, 7] total 11 [2018-11-18 11:27:25,853 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-11-18 11:27:25,853 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-11-18 11:27:25,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2018-11-18 11:27:25,853 INFO L87 Difference]: Start difference. First operand 26050 states and 32537 transitions. Second operand 11 states. [2018-11-18 11:27:27,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:27:27,039 INFO L93 Difference]: Finished difference Result 46113 states and 57980 transitions. [2018-11-18 11:27:27,040 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-18 11:27:27,040 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 284 [2018-11-18 11:27:27,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:27:27,074 INFO L225 Difference]: With dead ends: 46113 [2018-11-18 11:27:27,074 INFO L226 Difference]: Without dead ends: 26094 [2018-11-18 11:27:27,095 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1135 GetRequests, 1125 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2018-11-18 11:27:27,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26094 states. [2018-11-18 11:27:28,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26094 to 26094. [2018-11-18 11:27:28,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26094 states. [2018-11-18 11:27:28,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26094 states to 26094 states and 32581 transitions. [2018-11-18 11:27:28,105 INFO L78 Accepts]: Start accepts. Automaton has 26094 states and 32581 transitions. Word has length 284 [2018-11-18 11:27:28,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:27:28,106 INFO L480 AbstractCegarLoop]: Abstraction has 26094 states and 32581 transitions. [2018-11-18 11:27:28,106 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-11-18 11:27:28,106 INFO L276 IsEmpty]: Start isEmpty. Operand 26094 states and 32581 transitions. [2018-11-18 11:27:28,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2018-11-18 11:27:28,113 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:27:28,113 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:27:28,113 INFO L423 AbstractCegarLoop]: === Iteration 31 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:27:28,113 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:27:28,114 INFO L82 PathProgramCache]: Analyzing trace with hash 1582545503, now seen corresponding path program 2 times [2018-11-18 11:27:28,114 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 11:27:28,114 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3e8eec20-edbb-4776-aaf6-9c08318fafe2/bin-2019/utaipan/cvc4nyu Starting monitored process 36 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 36 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 11:27:28,130 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2018-11-18 11:27:30,570 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 11:27:30,570 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:27:30,844 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:27:30,897 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 33 proven. 6 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-11-18 11:27:30,897 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 11:27:31,189 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2018-11-18 11:27:31,193 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:27:31,193 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3e8eec20-edbb-4776-aaf6-9c08318fafe2/bin-2019/utaipan/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:27:31,201 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-18 11:27:43,434 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 11:27:43,434 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:27:43,458 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:27:43,518 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 33 proven. 6 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-11-18 11:27:43,519 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 11:27:43,900 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 18 proven. 6 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2018-11-18 11:27:43,932 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-11-18 11:27:43,932 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8] total 20 [2018-11-18 11:27:43,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-18 11:27:43,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-18 11:27:43,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2018-11-18 11:27:43,933 INFO L87 Difference]: Start difference. First operand 26094 states and 32581 transitions. Second operand 20 states. [2018-11-18 11:27:45,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:27:45,248 INFO L93 Difference]: Finished difference Result 46194 states and 58061 transitions. [2018-11-18 11:27:45,249 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-18 11:27:45,249 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 285 [2018-11-18 11:27:45,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:27:45,280 INFO L225 Difference]: With dead ends: 46194 [2018-11-18 11:27:45,281 INFO L226 Difference]: Without dead ends: 26138 [2018-11-18 11:27:45,299 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1139 GetRequests, 1119 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2018-11-18 11:27:45,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26138 states. [2018-11-18 11:27:46,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26138 to 26138. [2018-11-18 11:27:46,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26138 states. [2018-11-18 11:27:46,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26138 states to 26138 states and 32625 transitions. [2018-11-18 11:27:46,357 INFO L78 Accepts]: Start accepts. Automaton has 26138 states and 32625 transitions. Word has length 285 [2018-11-18 11:27:46,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:27:46,357 INFO L480 AbstractCegarLoop]: Abstraction has 26138 states and 32625 transitions. [2018-11-18 11:27:46,357 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-11-18 11:27:46,357 INFO L276 IsEmpty]: Start isEmpty. Operand 26138 states and 32625 transitions. [2018-11-18 11:27:46,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2018-11-18 11:27:46,364 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:27:46,364 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:27:46,365 INFO L423 AbstractCegarLoop]: === Iteration 32 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:27:46,365 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:27:46,365 INFO L82 PathProgramCache]: Analyzing trace with hash -270764973, now seen corresponding path program 3 times [2018-11-18 11:27:46,365 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 11:27:46,365 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3e8eec20-edbb-4776-aaf6-9c08318fafe2/bin-2019/utaipan/cvc4nyu Starting monitored process 38 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 38 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 11:27:46,382 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2018-11-18 11:28:07,618 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2018-11-18 11:28:07,618 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:28:07,886 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:28:07,941 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 33 proven. 10 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-11-18 11:28:07,942 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 11:28:08,280 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 18 proven. 10 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2018-11-18 11:28:08,286 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 11:28:08,286 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3e8eec20-edbb-4776-aaf6-9c08318fafe2/bin-2019/utaipan/z3 Starting monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 11:28:08,294 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-18 11:29:08,551 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2018-11-18 11:29:08,552 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 11:29:08,582 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 11:29:08,634 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 33 proven. 10 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-11-18 11:29:08,634 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 11:29:09,101 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 18 proven. 10 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2018-11-18 11:29:09,149 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-11-18 11:29:09,150 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9, 9] total 23 [2018-11-18 11:29:09,150 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2018-11-18 11:29:09,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2018-11-18 11:29:09,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2018-11-18 11:29:09,151 INFO L87 Difference]: Start difference. First operand 26138 states and 32625 transitions. Second operand 23 states. [2018-11-18 11:29:10,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 11:29:10,584 INFO L93 Difference]: Finished difference Result 46275 states and 58142 transitions. [2018-11-18 11:29:10,585 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-18 11:29:10,585 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 286 [2018-11-18 11:29:10,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 11:29:10,614 INFO L225 Difference]: With dead ends: 46275 [2018-11-18 11:29:10,614 INFO L226 Difference]: Without dead ends: 26182 [2018-11-18 11:29:10,630 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 1143 GetRequests, 1120 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=101, Invalid=451, Unknown=0, NotChecked=0, Total=552 [2018-11-18 11:29:10,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26182 states. [2018-11-18 11:29:11,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26182 to 26182. [2018-11-18 11:29:11,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26182 states. [2018-11-18 11:29:11,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26182 states to 26182 states and 32669 transitions. [2018-11-18 11:29:11,652 INFO L78 Accepts]: Start accepts. Automaton has 26182 states and 32669 transitions. Word has length 286 [2018-11-18 11:29:11,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 11:29:11,652 INFO L480 AbstractCegarLoop]: Abstraction has 26182 states and 32669 transitions. [2018-11-18 11:29:11,653 INFO L481 AbstractCegarLoop]: Interpolant automaton has 23 states. [2018-11-18 11:29:11,653 INFO L276 IsEmpty]: Start isEmpty. Operand 26182 states and 32669 transitions. [2018-11-18 11:29:11,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2018-11-18 11:29:11,660 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 11:29:11,661 INFO L375 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:29:11,661 INFO L423 AbstractCegarLoop]: === Iteration 33 === [ldv_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 11:29:11,661 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 11:29:11,661 INFO L82 PathProgramCache]: Analyzing trace with hash -1888814881, now seen corresponding path program 4 times [2018-11-18 11:29:11,662 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 11:29:11,662 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3e8eec20-edbb-4776-aaf6-9c08318fafe2/bin-2019/utaipan/cvc4nyu Starting monitored process 40 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 40 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 11:29:11,678 INFO L101 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-11-18 11:29:11,932 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 11:29:11,932 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.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.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.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.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 11:29:11,935 INFO L168 Benchmark]: Toolchain (without parser) took 201208.06 ms. Allocated memory was 1.0 GB in the beginning and 5.3 GB in the end (delta: 4.3 GB). Free memory was 944.4 MB in the beginning and 2.9 GB in the end (delta: -2.0 GB). Peak memory consumption was 2.3 GB. Max. memory is 11.5 GB. [2018-11-18 11:29:11,936 INFO L168 Benchmark]: CDTParser took 0.15 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 11:29:11,936 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1394.88 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 244.3 MB). Free memory was 944.4 MB in the beginning and 941.9 MB in the end (delta: 2.4 MB). Peak memory consumption was 267.1 MB. Max. memory is 11.5 GB. [2018-11-18 11:29:11,937 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.76 ms. Allocated memory is still 1.3 GB. Free memory was 941.9 MB in the beginning and 932.6 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 11.5 GB. [2018-11-18 11:29:11,937 INFO L168 Benchmark]: Boogie Preprocessor took 80.65 ms. Allocated memory is still 1.3 GB. Free memory was 932.6 MB in the beginning and 923.3 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 11.5 GB. [2018-11-18 11:29:11,937 INFO L168 Benchmark]: RCFGBuilder took 3624.97 ms. Allocated memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 13.1 MB). Free memory was 923.3 MB in the beginning and 1.0 GB in the end (delta: -126.3 MB). Peak memory consumption was 200.5 MB. Max. memory is 11.5 GB. [2018-11-18 11:29:11,937 INFO L168 Benchmark]: TraceAbstraction took 196063.88 ms. Allocated memory was 1.3 GB in the beginning and 5.3 GB in the end (delta: 4.0 GB). Free memory was 1.0 GB in the beginning and 2.9 GB in the end (delta: -1.9 GB). Peak memory consumption was 2.1 GB. Max. memory is 11.5 GB. [2018-11-18 11:29:11,939 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 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 1394.88 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 244.3 MB). Free memory was 944.4 MB in the beginning and 941.9 MB in the end (delta: 2.4 MB). Peak memory consumption was 267.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 40.76 ms. Allocated memory is still 1.3 GB. Free memory was 941.9 MB in the beginning and 932.6 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 80.65 ms. Allocated memory is still 1.3 GB. Free memory was 932.6 MB in the beginning and 923.3 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 11.5 GB. * RCFGBuilder took 3624.97 ms. Allocated memory was 1.3 GB in the beginning and 1.3 GB in the end (delta: 13.1 MB). Free memory was 923.3 MB in the beginning and 1.0 GB in the end (delta: -126.3 MB). Peak memory consumption was 200.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 196063.88 ms. Allocated memory was 1.3 GB in the beginning and 5.3 GB in the end (delta: 4.0 GB). Free memory was 1.0 GB in the beginning and 2.9 GB in the end (delta: -1.9 GB). Peak memory consumption was 2.1 GB. 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...