./Ultimate.py --spec ../../sv-benchmarks/c/ReachSafety.prp --file ../../sv-benchmarks/c/list-properties/list_search_false-unreach-call_false-valid-memcleanup.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_7b24b183-b207-4250-b5e7-a548cbd6c0f6/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_7b24b183-b207-4250-b5e7-a548cbd6c0f6/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_7b24b183-b207-4250-b5e7-a548cbd6c0f6/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_7b24b183-b207-4250-b5e7-a548cbd6c0f6/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/list-properties/list_search_false-unreach-call_false-valid-memcleanup.i -s /tmp/vcloud-vcloud-master/worker/working_dir_7b24b183-b207-4250-b5e7-a548cbd6c0f6/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_7b24b183-b207-4250-b5e7-a548cbd6c0f6/bin-2019/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9fdfa874c4a41b156e998d9e6fe5a8270aecd034 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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_7b24b183-b207-4250-b5e7-a548cbd6c0f6/bin-2019/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_7b24b183-b207-4250-b5e7-a548cbd6c0f6/bin-2019/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_7b24b183-b207-4250-b5e7-a548cbd6c0f6/bin-2019/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_7b24b183-b207-4250-b5e7-a548cbd6c0f6/bin-2019/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/list-properties/list_search_false-unreach-call_false-valid-memcleanup.i -s /tmp/vcloud-vcloud-master/worker/working_dir_7b24b183-b207-4250-b5e7-a548cbd6c0f6/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_7b24b183-b207-4250-b5e7-a548cbd6c0f6/bin-2019/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9fdfa874c4a41b156e998d9e6fe5a8270aecd034 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 13:49:49,006 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 13:49:49,007 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 13:49:49,014 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 13:49:49,014 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 13:49:49,015 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 13:49:49,016 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 13:49:49,017 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 13:49:49,018 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 13:49:49,019 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 13:49:49,019 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 13:49:49,019 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 13:49:49,020 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 13:49:49,021 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 13:49:49,021 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 13:49:49,022 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 13:49:49,023 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 13:49:49,024 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 13:49:49,026 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 13:49:49,027 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 13:49:49,028 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 13:49:49,028 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 13:49:49,030 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 13:49:49,030 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 13:49:49,031 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 13:49:49,031 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 13:49:49,032 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 13:49:49,032 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 13:49:49,033 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 13:49:49,033 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 13:49:49,034 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 13:49:49,034 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 13:49:49,034 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 13:49:49,034 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 13:49:49,035 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 13:49:49,035 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 13:49:49,035 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_7b24b183-b207-4250-b5e7-a548cbd6c0f6/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2018-11-18 13:49:49,043 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 13:49:49,043 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 13:49:49,043 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 13:49:49,044 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 13:49:49,044 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 13:49:49,044 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 13:49:49,044 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 13:49:49,044 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2018-11-18 13:49:49,044 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 13:49:49,044 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 13:49:49,045 INFO L133 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2018-11-18 13:49:49,045 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-11-18 13:49:49,045 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 13:49:49,045 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 13:49:49,045 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 13:49:49,046 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 13:49:49,046 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 13:49:49,046 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 13:49:49,046 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 13:49:49,046 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 13:49:49,046 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 13:49:49,046 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 13:49:49,046 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 13:49:49,047 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 13:49:49,047 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 13:49:49,047 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 13:49:49,047 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 13:49:49,047 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 13:49:49,047 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 13:49:49,047 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 13:49:49,048 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 13:49:49,048 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 13:49:49,048 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 13:49:49,048 INFO L133 SettingsManager]: * Trace refinement strategy=TAIPAN [2018-11-18 13:49:49,048 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 13:49:49,048 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-11-18 13:49:49,048 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-11-18 13:49:49,048 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_7b24b183-b207-4250-b5e7-a548cbd6c0f6/bin-2019/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9fdfa874c4a41b156e998d9e6fe5a8270aecd034 [2018-11-18 13:49:49,075 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 13:49:49,084 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 13:49:49,087 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 13:49:49,088 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 13:49:49,088 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 13:49:49,089 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_7b24b183-b207-4250-b5e7-a548cbd6c0f6/bin-2019/utaipan/../../sv-benchmarks/c/list-properties/list_search_false-unreach-call_false-valid-memcleanup.i [2018-11-18 13:49:49,126 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_7b24b183-b207-4250-b5e7-a548cbd6c0f6/bin-2019/utaipan/data/419de5cb2/dad380d473004c8abaa9334b6ad16cfb/FLAGbf3d20083 [2018-11-18 13:49:49,564 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 13:49:49,565 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_7b24b183-b207-4250-b5e7-a548cbd6c0f6/sv-benchmarks/c/list-properties/list_search_false-unreach-call_false-valid-memcleanup.i [2018-11-18 13:49:49,574 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_7b24b183-b207-4250-b5e7-a548cbd6c0f6/bin-2019/utaipan/data/419de5cb2/dad380d473004c8abaa9334b6ad16cfb/FLAGbf3d20083 [2018-11-18 13:49:49,586 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_7b24b183-b207-4250-b5e7-a548cbd6c0f6/bin-2019/utaipan/data/419de5cb2/dad380d473004c8abaa9334b6ad16cfb [2018-11-18 13:49:49,589 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 13:49:49,590 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 13:49:49,591 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 13:49:49,591 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 13:49:49,594 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 13:49:49,594 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:49:49" (1/1) ... [2018-11-18 13:49:49,597 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3ab0bb1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:49:49, skipping insertion in model container [2018-11-18 13:49:49,597 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:49:49" (1/1) ... [2018-11-18 13:49:49,605 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 13:49:49,633 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 13:49:49,820 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 13:49:49,828 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 13:49:49,855 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 13:49:49,931 INFO L195 MainTranslator]: Completed translation [2018-11-18 13:49:49,932 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:49:49 WrapperNode [2018-11-18 13:49:49,932 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 13:49:49,932 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 13:49:49,933 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 13:49:49,933 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 13:49:49,939 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:49:49" (1/1) ... [2018-11-18 13:49:49,947 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:49:49" (1/1) ... [2018-11-18 13:49:49,951 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 13:49:49,951 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 13:49:49,952 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 13:49:49,952 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 13:49:49,957 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:49:49" (1/1) ... [2018-11-18 13:49:49,957 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:49:49" (1/1) ... [2018-11-18 13:49:49,959 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:49:49" (1/1) ... [2018-11-18 13:49:49,959 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:49:49" (1/1) ... [2018-11-18 13:49:49,964 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:49:49" (1/1) ... [2018-11-18 13:49:49,967 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:49:49" (1/1) ... [2018-11-18 13:49:49,968 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:49:49" (1/1) ... [2018-11-18 13:49:49,970 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 13:49:49,970 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 13:49:49,970 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 13:49:49,970 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 13:49:49,971 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:49:49" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7b24b183-b207-4250-b5e7-a548cbd6c0f6/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 13:49:50,005 INFO L130 BoogieDeclarations]: Found specification of procedure search_list [2018-11-18 13:49:50,005 INFO L138 BoogieDeclarations]: Found implementation of procedure search_list [2018-11-18 13:49:50,005 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 13:49:50,005 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2018-11-18 13:49:50,005 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-18 13:49:50,005 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-18 13:49:50,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2018-11-18 13:49:50,005 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 13:49:50,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 13:49:50,006 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 13:49:50,006 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 13:49:50,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-11-18 13:49:50,006 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-11-18 13:49:50,006 INFO L130 BoogieDeclarations]: Found specification of procedure insert_list [2018-11-18 13:49:50,006 INFO L138 BoogieDeclarations]: Found implementation of procedure insert_list [2018-11-18 13:49:50,006 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 13:49:50,006 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 13:49:50,006 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 13:49:50,192 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 13:49:50,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:49:50 BoogieIcfgContainer [2018-11-18 13:49:50,193 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 13:49:50,194 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 13:49:50,194 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 13:49:50,196 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 13:49:50,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 01:49:49" (1/3) ... [2018-11-18 13:49:50,197 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6812aaf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 01:49:50, skipping insertion in model container [2018-11-18 13:49:50,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:49:49" (2/3) ... [2018-11-18 13:49:50,197 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6812aaf6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 01:49:50, skipping insertion in model container [2018-11-18 13:49:50,197 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:49:50" (3/3) ... [2018-11-18 13:49:50,199 INFO L112 eAbstractionObserver]: Analyzing ICFG list_search_false-unreach-call_false-valid-memcleanup.i [2018-11-18 13:49:50,207 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 13:49:50,213 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 13:49:50,225 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 13:49:50,248 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 13:49:50,248 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 13:49:50,248 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 13:49:50,248 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 13:49:50,248 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 13:49:50,248 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 13:49:50,248 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 13:49:50,248 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 13:49:50,258 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2018-11-18 13:49:50,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-11-18 13:49:50,261 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:49:50,262 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] [2018-11-18 13:49:50,264 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:49:50,267 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:49:50,268 INFO L82 PathProgramCache]: Analyzing trace with hash -2034878889, now seen corresponding path program 1 times [2018-11-18 13:49:50,269 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 13:49:50,297 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:49:50,297 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:49:50,297 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:49:50,298 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 13:49:50,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:49:50,460 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 1 proven. 22 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-18 13:49:50,462 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:49:50,462 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 13:49:50,463 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 46 with the following transitions: [2018-11-18 13:49:50,464 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [9], [10], [14], [16], [18], [20], [22], [24], [41], [44], [46], [52], [71], [73], [74], [75], [76], [77], [79], [80], [81], [82], [83], [84], [85], [86], [87], [88], [89] [2018-11-18 13:49:50,490 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-18 13:49:50,490 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-18 13:49:50,622 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2018-11-18 13:49:50,623 INFO L272 AbstractInterpreter]: Visited 25 different actions 37 times. Never merged. Never widened. Performed 324 root evaluator evaluations with a maximum evaluation depth of 3. Performed 324 inverse root evaluator evaluations with a maximum inverse evaluation depth of 3. Never found a fixpoint. Largest state had 30 variables. [2018-11-18 13:49:50,628 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:49:50,628 INFO L398 sIntCurrentIteration]: Generating AbsInt predicates [2018-11-18 13:49:50,714 INFO L227 lantSequenceWeakener]: Weakened 35 states. On average, predicates are now at 78.51% of their original sizes. [2018-11-18 13:49:50,714 INFO L413 sIntCurrentIteration]: Unifying AI predicates [2018-11-18 13:49:50,858 INFO L415 sIntCurrentIteration]: We unified 44 AI predicates to 44 [2018-11-18 13:49:50,858 INFO L424 sIntCurrentIteration]: Finished generation of AbsInt predicates [2018-11-18 13:49:50,859 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-11-18 13:49:50,859 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [18] imperfect sequences [6] total 22 [2018-11-18 13:49:50,859 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 13:49:50,864 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-18 13:49:50,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-18 13:49:50,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2018-11-18 13:49:50,870 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 18 states. [2018-11-18 13:49:52,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:49:52,175 INFO L93 Difference]: Finished difference Result 106 states and 131 transitions. [2018-11-18 13:49:52,175 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-11-18 13:49:52,176 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 45 [2018-11-18 13:49:52,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:49:52,183 INFO L225 Difference]: With dead ends: 106 [2018-11-18 13:49:52,183 INFO L226 Difference]: Without dead ends: 59 [2018-11-18 13:49:52,185 INFO L604 BasicCegarLoop]: 2 DeclaredPredicates, 56 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=142, Invalid=728, Unknown=0, NotChecked=0, Total=870 [2018-11-18 13:49:52,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2018-11-18 13:49:52,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 49. [2018-11-18 13:49:52,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-11-18 13:49:52,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2018-11-18 13:49:52,212 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 45 [2018-11-18 13:49:52,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:49:52,213 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2018-11-18 13:49:52,213 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-18 13:49:52,213 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2018-11-18 13:49:52,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-11-18 13:49:52,214 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:49:52,214 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] [2018-11-18 13:49:52,215 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:49:52,215 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:49:52,215 INFO L82 PathProgramCache]: Analyzing trace with hash -404698338, now seen corresponding path program 1 times [2018-11-18 13:49:52,215 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 13:49:52,216 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:49:52,216 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:49:52,216 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:49:52,216 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 13:49:52,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:49:52,294 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 1 proven. 22 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-18 13:49:52,294 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:49:52,294 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 13:49:52,295 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 49 with the following transitions: [2018-11-18 13:49:52,295 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [9], [10], [14], [16], [18], [20], [22], [24], [41], [44], [46], [52], [56], [58], [61], [67], [73], [74], [75], [76], [77], [79], [80], [81], [82], [83], [84], [85], [86], [87], [88], [89] [2018-11-18 13:49:52,296 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-18 13:49:52,296 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-18 13:49:52,322 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-18 13:49:52,322 INFO L272 AbstractInterpreter]: Visited 36 different actions 48 times. Never merged. Never widened. Performed 404 root evaluator evaluations with a maximum evaluation depth of 4. Performed 404 inverse root evaluator evaluations with a maximum inverse evaluation depth of 4. Never found a fixpoint. Largest state had 30 variables. [2018-11-18 13:49:52,323 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:49:52,324 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-18 13:49:52,324 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:49:52,324 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7b24b183-b207-4250-b5e7-a548cbd6c0f6/bin-2019/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 13:49:52,338 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:49:52,338 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-18 13:49:52,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:49:52,385 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:49:52,420 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 21 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-18 13:49:52,421 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 13:49:52,491 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 1 proven. 22 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-18 13:49:52,516 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-18 13:49:52,516 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 7 [2018-11-18 13:49:52,516 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 13:49:52,517 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-18 13:49:52,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-18 13:49:52,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-11-18 13:49:52,519 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 6 states. [2018-11-18 13:49:52,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:49:52,627 INFO L93 Difference]: Finished difference Result 82 states and 91 transitions. [2018-11-18 13:49:52,628 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2018-11-18 13:49:52,628 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 48 [2018-11-18 13:49:52,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:49:52,629 INFO L225 Difference]: With dead ends: 82 [2018-11-18 13:49:52,629 INFO L226 Difference]: Without dead ends: 49 [2018-11-18 13:49:52,629 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 93 SyntacticMatches, 5 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2018-11-18 13:49:52,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2018-11-18 13:49:52,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2018-11-18 13:49:52,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-11-18 13:49:52,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 50 transitions. [2018-11-18 13:49:52,635 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 50 transitions. Word has length 48 [2018-11-18 13:49:52,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:49:52,635 INFO L480 AbstractCegarLoop]: Abstraction has 49 states and 50 transitions. [2018-11-18 13:49:52,635 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-18 13:49:52,635 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 50 transitions. [2018-11-18 13:49:52,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-11-18 13:49:52,636 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:49:52,636 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2018-11-18 13:49:52,637 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:49:52,637 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:49:52,637 INFO L82 PathProgramCache]: Analyzing trace with hash -2103989024, now seen corresponding path program 1 times [2018-11-18 13:49:52,637 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 13:49:52,637 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:49:52,637 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:49:52,638 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:49:52,638 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 13:49:52,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:49:52,757 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-18 13:49:52,757 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 13:49:52,757 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2018-11-18 13:49:52,757 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 13:49:52,757 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2018-11-18 13:49:52,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2018-11-18 13:49:52,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2018-11-18 13:49:52,758 INFO L87 Difference]: Start difference. First operand 49 states and 50 transitions. Second operand 10 states. [2018-11-18 13:49:52,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:49:52,906 INFO L93 Difference]: Finished difference Result 66 states and 69 transitions. [2018-11-18 13:49:52,906 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-11-18 13:49:52,906 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 48 [2018-11-18 13:49:52,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:49:52,907 INFO L225 Difference]: With dead ends: 66 [2018-11-18 13:49:52,907 INFO L226 Difference]: Without dead ends: 57 [2018-11-18 13:49:52,908 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2018-11-18 13:49:52,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-11-18 13:49:52,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 53. [2018-11-18 13:49:52,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-11-18 13:49:52,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 55 transitions. [2018-11-18 13:49:52,914 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 55 transitions. Word has length 48 [2018-11-18 13:49:52,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:49:52,914 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 55 transitions. [2018-11-18 13:49:52,914 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2018-11-18 13:49:52,914 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 55 transitions. [2018-11-18 13:49:52,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-11-18 13:49:52,915 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:49:52,915 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2018-11-18 13:49:52,916 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:49:52,916 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:49:52,916 INFO L82 PathProgramCache]: Analyzing trace with hash 1797951262, now seen corresponding path program 1 times [2018-11-18 13:49:52,916 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 13:49:52,917 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:49:52,917 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:49:52,917 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:49:52,917 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 13:49:52,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:49:52,985 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-18 13:49:52,985 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 13:49:52,986 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2018-11-18 13:49:52,986 INFO L256 anRefinementStrategy]: Using the first perfect interpolant sequence [2018-11-18 13:49:52,986 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-18 13:49:52,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-18 13:49:52,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2018-11-18 13:49:52,987 INFO L87 Difference]: Start difference. First operand 53 states and 55 transitions. Second operand 7 states. [2018-11-18 13:49:53,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:49:53,096 INFO L93 Difference]: Finished difference Result 66 states and 69 transitions. [2018-11-18 13:49:53,096 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-18 13:49:53,096 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 48 [2018-11-18 13:49:53,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:49:53,097 INFO L225 Difference]: With dead ends: 66 [2018-11-18 13:49:53,097 INFO L226 Difference]: Without dead ends: 53 [2018-11-18 13:49:53,098 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2018-11-18 13:49:53,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-11-18 13:49:53,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2018-11-18 13:49:53,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-11-18 13:49:53,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 54 transitions. [2018-11-18 13:49:53,103 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 54 transitions. Word has length 48 [2018-11-18 13:49:53,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:49:53,103 INFO L480 AbstractCegarLoop]: Abstraction has 53 states and 54 transitions. [2018-11-18 13:49:53,103 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-18 13:49:53,103 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 54 transitions. [2018-11-18 13:49:53,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-11-18 13:49:53,104 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:49:53,105 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:49:53,105 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:49:53,105 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:49:53,105 INFO L82 PathProgramCache]: Analyzing trace with hash -1333266038, now seen corresponding path program 1 times [2018-11-18 13:49:53,105 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 13:49:53,106 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:49:53,106 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:49:53,106 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:49:53,106 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 13:49:53,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:49:53,469 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 19 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-18 13:49:53,470 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:49:53,470 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 13:49:53,470 INFO L200 CegarAbsIntRunner]: Running AI on error trace of length 53 with the following transitions: [2018-11-18 13:49:53,470 INFO L202 CegarAbsIntRunner]: [0], [1], [2], [5], [7], [9], [10], [14], [16], [18], [20], [22], [24], [41], [44], [46], [52], [56], [58], [61], [67], [69], [73], [74], [75], [76], [77], [79], [80], [81], [82], [83], [84], [85], [86], [87], [88], [89] [2018-11-18 13:49:53,471 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2018-11-18 13:49:53,471 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2018-11-18 13:49:53,529 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2018-11-18 13:49:53,529 INFO L272 AbstractInterpreter]: Visited 38 different actions 69 times. Merged at 10 different actions 12 times. Never widened. Performed 609 root evaluator evaluations with a maximum evaluation depth of 4. Performed 609 inverse root evaluator evaluations with a maximum inverse evaluation depth of 4. Found 4 fixpoints after 2 different actions. Largest state had 30 variables. [2018-11-18 13:49:53,535 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:49:53,535 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: Unknown [2018-11-18 13:49:53,535 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:49:53,536 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7b24b183-b207-4250-b5e7-a548cbd6c0f6/bin-2019/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 13:49:53,549 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:49:53,549 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: FPandBP) [2018-11-18 13:49:53,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:49:53,595 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:49:53,614 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-11-18 13:49:53,615 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-18 13:49:53,618 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:49:53,618 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-11-18 13:49:53,641 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-11-18 13:49:53,644 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-11-18 13:49:53,645 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 13:49:53,646 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:49:53,648 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:49:53,649 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:17, output treesize:13 [2018-11-18 13:49:53,741 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 10 [2018-11-18 13:49:53,743 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2018-11-18 13:49:53,744 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 13:49:53,745 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:49:53,754 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 10 [2018-11-18 13:49:53,756 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2018-11-18 13:49:53,756 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-18 13:49:53,758 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:49:53,764 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-18 13:49:53,764 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:46, output treesize:38 [2018-11-18 13:49:54,628 WARN L180 SmtUtils]: Spent 491.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2018-11-18 13:49:55,176 WARN L180 SmtUtils]: Spent 502.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2018-11-18 13:49:55,182 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 13:49:55,183 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 13:49:55,183 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 10 [2018-11-18 13:49:55,183 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-18 13:49:55,192 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 38 [2018-11-18 13:49:55,194 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-11-18 13:49:55,194 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-11-18 13:49:55,197 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:49:55,201 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:49:55,202 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:50, output treesize:33 [2018-11-18 13:49:55,378 WARN L307 Elim1Store]: Array PQE input equivalent to false [2018-11-18 13:49:55,378 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-18 13:49:55,379 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:49:55,380 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:53, output treesize:1 [2018-11-18 13:49:55,385 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 19 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-18 13:49:55,385 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 13:49:56,075 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 25 [2018-11-18 13:49:56,085 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 8 [2018-11-18 13:49:56,085 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 13:49:56,095 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2018-11-18 13:49:56,097 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 3 [2018-11-18 13:49:56,097 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-18 13:49:56,099 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:49:56,100 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 15 [2018-11-18 13:49:56,102 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2018-11-18 13:49:56,102 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-11-18 13:49:56,104 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:49:56,112 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 4 xjuncts. [2018-11-18 13:49:56,124 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 3 xjuncts. [2018-11-18 13:49:56,124 INFO L202 ElimStorePlain]: Needed 7 recursive calls to eliminate 4 variables, input treesize:42, output treesize:43 [2018-11-18 13:49:56,181 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 19 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-18 13:49:56,196 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2018-11-18 13:49:56,196 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 16, 15] total 47 [2018-11-18 13:49:56,196 INFO L249 anRefinementStrategy]: Using the first two imperfect interpolant sequences [2018-11-18 13:49:56,197 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-11-18 13:49:56,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-11-18 13:49:56,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=1993, Unknown=1, NotChecked=0, Total=2162 [2018-11-18 13:49:56,198 INFO L87 Difference]: Start difference. First operand 53 states and 54 transitions. Second operand 34 states. [2018-11-18 13:49:57,952 WARN L180 SmtUtils]: Spent 1.59 s on a formula simplification. DAG size of input: 60 DAG size of output: 59 [2018-11-18 13:49:59,145 WARN L180 SmtUtils]: Spent 980.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 47 [2018-11-18 13:50:00,804 WARN L180 SmtUtils]: Spent 1.62 s on a formula simplification. DAG size of input: 67 DAG size of output: 66 [2018-11-18 13:50:01,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:50:01,473 INFO L93 Difference]: Finished difference Result 74 states and 77 transitions. [2018-11-18 13:50:01,473 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-11-18 13:50:01,473 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 52 [2018-11-18 13:50:01,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:50:01,474 INFO L225 Difference]: With dead ends: 74 [2018-11-18 13:50:01,474 INFO L226 Difference]: Without dead ends: 58 [2018-11-18 13:50:01,475 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 78 SyntacticMatches, 3 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 840 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=446, Invalid=3843, Unknown=1, NotChecked=0, Total=4290 [2018-11-18 13:50:01,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2018-11-18 13:50:01,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2018-11-18 13:50:01,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-11-18 13:50:01,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 59 transitions. [2018-11-18 13:50:01,481 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 59 transitions. Word has length 52 [2018-11-18 13:50:01,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:50:01,482 INFO L480 AbstractCegarLoop]: Abstraction has 57 states and 59 transitions. [2018-11-18 13:50:01,482 INFO L481 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-11-18 13:50:01,482 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 59 transitions. [2018-11-18 13:50:01,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-11-18 13:50:01,482 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:50:01,483 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 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] [2018-11-18 13:50:01,483 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:50:01,483 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:50:01,483 INFO L82 PathProgramCache]: Analyzing trace with hash -1630674636, now seen corresponding path program 2 times [2018-11-18 13:50:01,483 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2018-11-18 13:50:01,484 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:50:01,484 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:50:01,484 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:50:01,484 INFO L286 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2018-11-18 13:50:01,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:50:02,293 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 17 proven. 24 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-18 13:50:02,294 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:50:02,294 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2018-11-18 13:50:02,294 INFO L184 CegarAbsIntRunner]: Skipping current iteration for AI because we have already analyzed this path program [2018-11-18 13:50:02,294 INFO L422 seRefinementStrategy]: Interpolation failed due to KNOWN_IGNORE: AbsInt can only provide a hoare triple checker if it generated fixpoints [2018-11-18 13:50:02,294 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:50:02,294 INFO L192 anRefinementStrategy]: Switched to InterpolantGenerator mode Z3_IG No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7b24b183-b207-4250-b5e7-a548cbd6c0f6/bin-2019/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 13:50:02,300 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-11-18 13:50:02,300 INFO L286 anRefinementStrategy]: Using traceCheck mode Z3_IG with AssertCodeBlockOrder OUTSIDE_LOOP_FIRST2 (IT: FPandBP) [2018-11-18 13:50:02,339 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-11-18 13:50:02,339 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 13:50:02,344 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:50:02,390 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-11-18 13:50:02,394 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-11-18 13:50:02,395 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 13:50:02,396 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:50:02,399 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:50:02,400 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:18, output treesize:11 [2018-11-18 13:50:02,518 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-11-18 13:50:02,518 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-18 13:50:02,523 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:50:02,524 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:27, output treesize:26 [2018-11-18 13:50:02,573 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 10 [2018-11-18 13:50:02,575 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2018-11-18 13:50:02,576 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 13:50:02,587 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:50:02,596 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 10 [2018-11-18 13:50:02,598 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2018-11-18 13:50:02,598 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-18 13:50:02,601 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:50:02,609 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-18 13:50:02,610 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:46, output treesize:38 [2018-11-18 13:50:03,364 WARN L180 SmtUtils]: Spent 388.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2018-11-18 13:50:04,315 WARN L180 SmtUtils]: Spent 451.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2018-11-18 13:50:04,330 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 25 treesize of output 49 [2018-11-18 13:50:04,333 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 31 [2018-11-18 13:50:04,333 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 13:50:04,347 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2018-11-18 13:50:04,348 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-11-18 13:50:04,356 INFO L267 ElimStorePlain]: Start of recursive call 2: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-18 13:50:04,364 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-11-18 13:50:04,364 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 2 variables, input treesize:42, output treesize:59 [2018-11-18 13:50:05,088 WARN L180 SmtUtils]: Spent 566.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2018-11-18 13:50:05,683 WARN L180 SmtUtils]: Spent 541.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2018-11-18 13:50:05,691 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 13:50:05,692 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 13:50:05,693 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 65 treesize of output 59 [2018-11-18 13:50:05,693 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-18 13:50:05,743 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 13:50:05,744 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 13:50:05,745 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 63 [2018-11-18 13:50:05,745 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 13:50:05,793 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 63 treesize of output 60 [2018-11-18 13:50:05,795 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2018-11-18 13:50:05,795 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-18 13:50:05,803 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:50:05,844 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 62 [2018-11-18 13:50:05,846 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2018-11-18 13:50:05,846 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-11-18 13:50:05,856 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:50:05,888 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 56 [2018-11-18 13:50:05,890 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2018-11-18 13:50:05,890 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-11-18 13:50:05,903 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:50:05,938 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 58 [2018-11-18 13:50:05,940 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2018-11-18 13:50:05,940 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2018-11-18 13:50:05,949 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:50:05,976 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 54 [2018-11-18 13:50:05,978 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-11-18 13:50:05,979 INFO L267 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2018-11-18 13:50:05,987 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:50:06,020 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 61 treesize of output 81 [2018-11-18 13:50:06,023 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 65 [2018-11-18 13:50:06,023 INFO L267 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 1 xjuncts. [2018-11-18 13:50:06,055 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 56 [2018-11-18 13:50:06,055 INFO L267 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 1 xjuncts. [2018-11-18 13:50:06,075 INFO L267 ElimStorePlain]: Start of recursive call 14: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-11-18 13:50:06,100 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 2 dim-1 vars, 6 dim-2 vars, End of recursive call: and 3 xjuncts. [2018-11-18 13:50:06,100 INFO L202 ElimStorePlain]: Needed 16 recursive calls to eliminate 12 variables, input treesize:135, output treesize:158 [2018-11-18 13:50:06,751 WARN L307 Elim1Store]: Array PQE input equivalent to false [2018-11-18 13:50:06,752 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-18 13:50:06,757 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 9 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:50:06,757 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 12 variables, input treesize:381, output treesize:1 [2018-11-18 13:50:06,777 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 17 proven. 24 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-18 13:50:06,777 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 13:50:08,125 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2018-11-18 13:50:08,125 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-18 13:50:08,136 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 291 treesize of output 252 [2018-11-18 13:50:08,164 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 8 [2018-11-18 13:50:08,164 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-11-18 13:50:08,174 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 227 treesize of output 219 [2018-11-18 13:50:08,176 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 219 treesize of output 207 [2018-11-18 13:50:08,176 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-11-18 13:50:08,181 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:50:08,187 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:50:08,195 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 207 treesize of output 168 [2018-11-18 13:50:08,244 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 8 [2018-11-18 13:50:08,244 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2018-11-18 13:50:08,261 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 143 treesize of output 135 [2018-11-18 13:50:08,263 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 135 treesize of output 123 [2018-11-18 13:50:08,263 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 1 xjuncts. [2018-11-18 13:50:08,268 INFO L267 ElimStorePlain]: Start of recursive call 9: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:50:08,273 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:50:08,280 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, 2 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2018-11-18 13:50:08,280 INFO L202 ElimStorePlain]: Needed 10 recursive calls to eliminate 7 variables, input treesize:300, output treesize:126 [2018-11-18 13:50:08,675 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 327 treesize of output 278 [2018-11-18 13:50:08,719 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 10 [2018-11-18 13:50:08,719 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 13:50:08,741 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 253 treesize of output 245 [2018-11-18 13:50:08,744 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 245 treesize of output 225 [2018-11-18 13:50:08,745 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-18 13:50:08,756 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:50:08,772 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-11-18 13:50:08,815 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 228 treesize of output 179 [2018-11-18 13:50:08,843 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 10 [2018-11-18 13:50:08,844 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-11-18 13:50:08,856 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 151 treesize of output 143 [2018-11-18 13:50:08,859 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 143 treesize of output 123 [2018-11-18 13:50:08,859 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-11-18 13:50:08,866 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:50:08,875 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:50:08,880 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 228 treesize of output 179 [2018-11-18 13:50:08,919 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 10 [2018-11-18 13:50:08,919 INFO L267 ElimStorePlain]: Start of recursive call 11: End of recursive call: and 1 xjuncts. [2018-11-18 13:50:08,938 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 151 treesize of output 143 [2018-11-18 13:50:08,941 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 143 treesize of output 123 [2018-11-18 13:50:08,942 INFO L267 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2018-11-18 13:50:08,950 INFO L267 ElimStorePlain]: Start of recursive call 12: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:50:08,959 INFO L267 ElimStorePlain]: Start of recursive call 10: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:50:09,188 WARN L521 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 13:50:09,189 FATAL L292 ToolchainWalker]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: alternation not yet supported at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.applyNonSddEliminations(ElimStorePlain.java:347) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:264) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.elimAllRec(ElimStorePlain.java:199) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:293) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:245) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:439) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:418) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:290) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:330) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) 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.BaseTaipanRefinementStrategy.getTraceCheck(BaseTaipanRefinementStrategy.java:214) 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 13:50:09,191 INFO L168 Benchmark]: Toolchain (without parser) took 19601.83 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 241.7 MB). Free memory was 955.5 MB in the beginning and 1.2 GB in the end (delta: -214.6 MB). Peak memory consumption was 356.6 MB. Max. memory is 11.5 GB. [2018-11-18 13:50:09,191 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 13:50:09,191 INFO L168 Benchmark]: CACSL2BoogieTranslator took 341.48 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.6 MB). Free memory was 955.5 MB in the beginning and 1.1 GB in the end (delta: -170.6 MB). Peak memory consumption was 33.1 MB. Max. memory is 11.5 GB. [2018-11-18 13:50:09,192 INFO L168 Benchmark]: Boogie Procedure Inliner took 18.88 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-11-18 13:50:09,192 INFO L168 Benchmark]: Boogie Preprocessor took 18.21 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 13:50:09,192 INFO L168 Benchmark]: RCFGBuilder took 223.16 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.4 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. [2018-11-18 13:50:09,192 INFO L168 Benchmark]: TraceAbstraction took 18996.75 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 109.1 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -72.4 MB). Peak memory consumption was 366.2 MB. Max. memory is 11.5 GB. [2018-11-18 13:50:09,194 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 985.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 341.48 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 132.6 MB). Free memory was 955.5 MB in the beginning and 1.1 GB in the end (delta: -170.6 MB). Peak memory consumption was 33.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 18.88 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.21 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 223.16 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 20.4 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 18996.75 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 109.1 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -72.4 MB). Peak memory consumption was 366.2 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: UnsupportedOperationException: alternation not yet supported de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: alternation not yet supported: de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.applyNonSddEliminations(ElimStorePlain.java:347) 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 13:50:10,567 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 13:50:10,568 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 13:50:10,576 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 13:50:10,576 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 13:50:10,576 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 13:50:10,577 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 13:50:10,579 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 13:50:10,580 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 13:50:10,580 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 13:50:10,581 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 13:50:10,581 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 13:50:10,582 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 13:50:10,583 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 13:50:10,584 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 13:50:10,584 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 13:50:10,585 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 13:50:10,586 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 13:50:10,588 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 13:50:10,589 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 13:50:10,590 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 13:50:10,591 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 13:50:10,593 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 13:50:10,593 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 13:50:10,593 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 13:50:10,594 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 13:50:10,595 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 13:50:10,595 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 13:50:10,596 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 13:50:10,596 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 13:50:10,597 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 13:50:10,597 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 13:50:10,597 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 13:50:10,597 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 13:50:10,598 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 13:50:10,599 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 13:50:10,599 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_7b24b183-b207-4250-b5e7-a548cbd6c0f6/bin-2019/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2018-11-18 13:50:10,610 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 13:50:10,610 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 13:50:10,611 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-11-18 13:50:10,611 INFO L133 SettingsManager]: * User list type=DISABLED [2018-11-18 13:50:10,611 INFO L133 SettingsManager]: * calls to implemented procedures=false [2018-11-18 13:50:10,611 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-11-18 13:50:10,611 INFO L133 SettingsManager]: * Explicit value domain=true [2018-11-18 13:50:10,611 INFO L133 SettingsManager]: * Octagon Domain=false [2018-11-18 13:50:10,611 INFO L133 SettingsManager]: * Abstract domain=CompoundDomain [2018-11-18 13:50:10,612 INFO L133 SettingsManager]: * Interval Domain=false [2018-11-18 13:50:10,612 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 13:50:10,612 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 13:50:10,612 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 13:50:10,612 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 13:50:10,613 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2018-11-18 13:50:10,613 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-11-18 13:50:10,613 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2018-11-18 13:50:10,613 INFO L133 SettingsManager]: * Use bitvectors instead of ints=true [2018-11-18 13:50:10,613 INFO L133 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2018-11-18 13:50:10,613 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 13:50:10,613 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 13:50:10,613 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 13:50:10,614 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2018-11-18 13:50:10,614 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 13:50:10,614 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 13:50:10,614 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-11-18 13:50:10,614 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-11-18 13:50:10,614 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-11-18 13:50:10,614 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 13:50:10,614 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-11-18 13:50:10,614 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-11-18 13:50:10,615 INFO L133 SettingsManager]: * Trace refinement strategy=WALRUS [2018-11-18 13:50:10,615 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-11-18 13:50:10,615 INFO L133 SettingsManager]: * Command for external solver=cvc4nyu --tear-down-incremental --rewrite-divk --print-success --lang smt [2018-11-18 13:50:10,615 INFO L133 SettingsManager]: * Logic for external solver=AUFBV [2018-11-18 13:50:10,615 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_7b24b183-b207-4250-b5e7-a548cbd6c0f6/bin-2019/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(__VERIFIER_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9fdfa874c4a41b156e998d9e6fe5a8270aecd034 [2018-11-18 13:50:10,643 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 13:50:10,651 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 13:50:10,653 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 13:50:10,654 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 13:50:10,654 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 13:50:10,655 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_7b24b183-b207-4250-b5e7-a548cbd6c0f6/bin-2019/utaipan/../../sv-benchmarks/c/list-properties/list_search_false-unreach-call_false-valid-memcleanup.i [2018-11-18 13:50:10,690 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_7b24b183-b207-4250-b5e7-a548cbd6c0f6/bin-2019/utaipan/data/76096aee9/615db3373c744374927daa4d8869ea4b/FLAG2ea0fddb7 [2018-11-18 13:50:11,121 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 13:50:11,122 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_7b24b183-b207-4250-b5e7-a548cbd6c0f6/sv-benchmarks/c/list-properties/list_search_false-unreach-call_false-valid-memcleanup.i [2018-11-18 13:50:11,132 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_7b24b183-b207-4250-b5e7-a548cbd6c0f6/bin-2019/utaipan/data/76096aee9/615db3373c744374927daa4d8869ea4b/FLAG2ea0fddb7 [2018-11-18 13:50:11,140 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_7b24b183-b207-4250-b5e7-a548cbd6c0f6/bin-2019/utaipan/data/76096aee9/615db3373c744374927daa4d8869ea4b [2018-11-18 13:50:11,142 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 13:50:11,143 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 13:50:11,143 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 13:50:11,144 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 13:50:11,147 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 13:50:11,147 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:50:11" (1/1) ... [2018-11-18 13:50:11,149 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5752c72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:50:11, skipping insertion in model container [2018-11-18 13:50:11,150 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:50:11" (1/1) ... [2018-11-18 13:50:11,157 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 13:50:11,186 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 13:50:11,391 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 13:50:11,402 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 13:50:11,436 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 13:50:11,518 INFO L195 MainTranslator]: Completed translation [2018-11-18 13:50:11,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:50:11 WrapperNode [2018-11-18 13:50:11,518 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 13:50:11,519 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 13:50:11,519 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 13:50:11,519 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 13:50:11,526 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:50:11" (1/1) ... [2018-11-18 13:50:11,536 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:50:11" (1/1) ... [2018-11-18 13:50:11,541 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 13:50:11,541 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 13:50:11,541 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 13:50:11,541 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 13:50:11,546 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:50:11" (1/1) ... [2018-11-18 13:50:11,547 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:50:11" (1/1) ... [2018-11-18 13:50:11,549 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:50:11" (1/1) ... [2018-11-18 13:50:11,549 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:50:11" (1/1) ... [2018-11-18 13:50:11,556 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:50:11" (1/1) ... [2018-11-18 13:50:11,558 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:50:11" (1/1) ... [2018-11-18 13:50:11,560 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:50:11" (1/1) ... [2018-11-18 13:50:11,561 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 13:50:11,562 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 13:50:11,562 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 13:50:11,562 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 13:50:11,562 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:50:11" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7b24b183-b207-4250-b5e7-a548cbd6c0f6/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 13:50:11,595 INFO L130 BoogieDeclarations]: Found specification of procedure search_list [2018-11-18 13:50:11,595 INFO L138 BoogieDeclarations]: Found implementation of procedure search_list [2018-11-18 13:50:11,595 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-11-18 13:50:11,595 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2018-11-18 13:50:11,595 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2018-11-18 13:50:11,595 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2018-11-18 13:50:11,595 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-11-18 13:50:11,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-11-18 13:50:11,596 INFO L130 BoogieDeclarations]: Found specification of procedure main [2018-11-18 13:50:11,596 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2018-11-18 13:50:11,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-11-18 13:50:11,596 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-11-18 13:50:11,596 INFO L130 BoogieDeclarations]: Found specification of procedure insert_list [2018-11-18 13:50:11,596 INFO L138 BoogieDeclarations]: Found implementation of procedure insert_list [2018-11-18 13:50:11,596 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-11-18 13:50:11,596 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2018-11-18 13:50:11,597 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 13:50:11,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 13:50:11,785 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 13:50:11,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:50:11 BoogieIcfgContainer [2018-11-18 13:50:11,786 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 13:50:11,787 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-11-18 13:50:11,787 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-11-18 13:50:11,789 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-11-18 13:50:11,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 01:50:11" (1/3) ... [2018-11-18 13:50:11,790 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e20daff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 01:50:11, skipping insertion in model container [2018-11-18 13:50:11,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:50:11" (2/3) ... [2018-11-18 13:50:11,790 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e20daff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 01:50:11, skipping insertion in model container [2018-11-18 13:50:11,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:50:11" (3/3) ... [2018-11-18 13:50:11,791 INFO L112 eAbstractionObserver]: Analyzing ICFG list_search_false-unreach-call_false-valid-memcleanup.i [2018-11-18 13:50:11,797 INFO L136 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-11-18 13:50:11,801 INFO L148 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2018-11-18 13:50:11,810 INFO L257 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2018-11-18 13:50:11,828 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 13:50:11,829 INFO L382 AbstractCegarLoop]: Interprodecural is true [2018-11-18 13:50:11,829 INFO L383 AbstractCegarLoop]: Hoare is true [2018-11-18 13:50:11,829 INFO L384 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-11-18 13:50:11,829 INFO L385 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 13:50:11,829 INFO L386 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 13:50:11,829 INFO L387 AbstractCegarLoop]: Difference is false [2018-11-18 13:50:11,830 INFO L388 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 13:50:11,830 INFO L393 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-11-18 13:50:11,839 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2018-11-18 13:50:11,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-11-18 13:50:11,843 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:50:11,843 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] [2018-11-18 13:50:11,845 INFO L423 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:50:11,848 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:50:11,849 INFO L82 PathProgramCache]: Analyzing trace with hash -2034878889, now seen corresponding path program 1 times [2018-11-18 13:50:11,852 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 13:50:11,852 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7b24b183-b207-4250-b5e7-a548cbd6c0f6/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 13:50:11,866 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:50:11,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:50:11,966 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:50:11,987 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2018-11-18 13:50:11,987 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 13:50:11,990 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 13:50:11,991 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 13:50:11,993 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-11-18 13:50:12,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-11-18 13:50:12,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 13:50:12,004 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 2 states. [2018-11-18 13:50:12,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:50:12,020 INFO L93 Difference]: Finished difference Result 61 states and 73 transitions. [2018-11-18 13:50:12,020 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 13:50:12,021 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 45 [2018-11-18 13:50:12,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:50:12,027 INFO L225 Difference]: With dead ends: 61 [2018-11-18 13:50:12,028 INFO L226 Difference]: Without dead ends: 34 [2018-11-18 13:50:12,030 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-11-18 13:50:12,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2018-11-18 13:50:12,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-11-18 13:50:12,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-11-18 13:50:12,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2018-11-18 13:50:12,062 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 45 [2018-11-18 13:50:12,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:50:12,064 INFO L480 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2018-11-18 13:50:12,064 INFO L481 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-11-18 13:50:12,064 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2018-11-18 13:50:12,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-11-18 13:50:12,066 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:50:12,066 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] [2018-11-18 13:50:12,066 INFO L423 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:50:12,067 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:50:12,067 INFO L82 PathProgramCache]: Analyzing trace with hash -404698338, now seen corresponding path program 1 times [2018-11-18 13:50:12,068 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 13:50:12,068 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7b24b183-b207-4250-b5e7-a548cbd6c0f6/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 13:50:12,084 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:50:12,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:50:12,158 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:50:12,226 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 21 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-18 13:50:12,226 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 13:50:12,414 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 1 proven. 22 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-18 13:50:12,418 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:50:12,418 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7b24b183-b207-4250-b5e7-a548cbd6c0f6/bin-2019/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 13:50:12,425 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:50:12,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:50:12,466 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:50:12,475 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 21 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2018-11-18 13:50:12,475 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 13:50:12,562 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 1 proven. 22 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-18 13:50:12,588 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-11-18 13:50:12,589 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6] total 7 [2018-11-18 13:50:12,589 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-11-18 13:50:12,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-11-18 13:50:12,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2018-11-18 13:50:12,590 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand 7 states. [2018-11-18 13:50:12,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:50:12,854 INFO L93 Difference]: Finished difference Result 75 states and 94 transitions. [2018-11-18 13:50:12,854 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-11-18 13:50:12,855 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 48 [2018-11-18 13:50:12,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:50:12,856 INFO L225 Difference]: With dead ends: 75 [2018-11-18 13:50:12,856 INFO L226 Difference]: Without dead ends: 50 [2018-11-18 13:50:12,857 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2018-11-18 13:50:12,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2018-11-18 13:50:12,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 39. [2018-11-18 13:50:12,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-11-18 13:50:12,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2018-11-18 13:50:12,866 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 48 [2018-11-18 13:50:12,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:50:12,866 INFO L480 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2018-11-18 13:50:12,867 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-11-18 13:50:12,867 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2018-11-18 13:50:12,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-11-18 13:50:12,868 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:50:12,868 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2018-11-18 13:50:12,868 INFO L423 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:50:12,868 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:50:12,869 INFO L82 PathProgramCache]: Analyzing trace with hash -2103989024, now seen corresponding path program 1 times [2018-11-18 13:50:12,869 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 13:50:12,869 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7b24b183-b207-4250-b5e7-a548cbd6c0f6/bin-2019/utaipan/cvc4nyu Starting monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4nyu --tear-down-incremental --print-success --lang smt --rewrite-divk [2018-11-18 13:50:12,881 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:50:12,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:50:12,935 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:50:12,974 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-11-18 13:50:12,977 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-11-18 13:50:12,977 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 13:50:12,979 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:50:12,984 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:50:12,984 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:15, output treesize:11 [2018-11-18 13:50:13,118 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-18 13:50:13,118 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 13:50:13,119 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 13:50:13,120 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2018-11-18 13:50:13,120 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-11-18 13:50:13,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-11-18 13:50:13,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2018-11-18 13:50:13,121 INFO L87 Difference]: Start difference. First operand 39 states and 44 transitions. Second operand 9 states. [2018-11-18 13:50:13,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:50:13,423 INFO L93 Difference]: Finished difference Result 56 states and 63 transitions. [2018-11-18 13:50:13,425 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2018-11-18 13:50:13,425 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 48 [2018-11-18 13:50:13,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:50:13,427 INFO L225 Difference]: With dead ends: 56 [2018-11-18 13:50:13,428 INFO L226 Difference]: Without dead ends: 47 [2018-11-18 13:50:13,428 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2018-11-18 13:50:13,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2018-11-18 13:50:13,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 43. [2018-11-18 13:50:13,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-11-18 13:50:13,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2018-11-18 13:50:13,436 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 48 [2018-11-18 13:50:13,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:50:13,437 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2018-11-18 13:50:13,437 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-11-18 13:50:13,437 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2018-11-18 13:50:13,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2018-11-18 13:50:13,438 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:50:13,439 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2018-11-18 13:50:13,439 INFO L423 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:50:13,439 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:50:13,439 INFO L82 PathProgramCache]: Analyzing trace with hash 1797951262, now seen corresponding path program 1 times [2018-11-18 13:50:13,440 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 13:50:13,440 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7b24b183-b207-4250-b5e7-a548cbd6c0f6/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 13:50:13,451 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:50:13,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:50:13,499 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:50:13,593 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-11-18 13:50:13,593 INFO L312 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2018-11-18 13:50:13,594 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 13:50:13,594 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-11-18 13:50:13,594 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-11-18 13:50:13,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-18 13:50:13,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-11-18 13:50:13,595 INFO L87 Difference]: Start difference. First operand 43 states and 49 transitions. Second operand 6 states. [2018-11-18 13:50:13,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:50:13,677 INFO L93 Difference]: Finished difference Result 57 states and 64 transitions. [2018-11-18 13:50:13,677 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-11-18 13:50:13,677 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 48 [2018-11-18 13:50:13,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:50:13,678 INFO L225 Difference]: With dead ends: 57 [2018-11-18 13:50:13,678 INFO L226 Difference]: Without dead ends: 44 [2018-11-18 13:50:13,678 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-11-18 13:50:13,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2018-11-18 13:50:13,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2018-11-18 13:50:13,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2018-11-18 13:50:13,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2018-11-18 13:50:13,683 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 48 [2018-11-18 13:50:13,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:50:13,683 INFO L480 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2018-11-18 13:50:13,683 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-11-18 13:50:13,683 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2018-11-18 13:50:13,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-11-18 13:50:13,684 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:50:13,684 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:50:13,684 INFO L423 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:50:13,684 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:50:13,684 INFO L82 PathProgramCache]: Analyzing trace with hash -1333266038, now seen corresponding path program 1 times [2018-11-18 13:50:13,685 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 13:50:13,685 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7b24b183-b207-4250-b5e7-a548cbd6c0f6/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 13:50:13,696 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:50:13,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:50:13,801 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:50:13,807 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-11-18 13:50:13,807 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-18 13:50:13,817 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:50:13,818 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2018-11-18 13:50:13,830 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-11-18 13:50:13,832 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-11-18 13:50:13,832 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 13:50:13,834 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:50:13,840 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:50:13,840 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:22, output treesize:18 [2018-11-18 13:50:13,946 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 10 [2018-11-18 13:50:13,953 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2018-11-18 13:50:13,953 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 13:50:13,957 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:50:13,987 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 10 [2018-11-18 13:50:13,990 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2018-11-18 13:50:13,990 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-18 13:50:13,993 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:50:14,009 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-18 13:50:14,009 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:46, output treesize:38 [2018-11-18 13:50:16,052 WARN L180 SmtUtils]: Spent 2.02 s on a formula simplification that was a NOOP. DAG size: 29 [2018-11-18 13:50:18,105 WARN L180 SmtUtils]: Spent 2.02 s on a formula simplification that was a NOOP. DAG size: 29 [2018-11-18 13:50:18,116 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 13:50:18,118 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 13:50:18,119 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 10 [2018-11-18 13:50:18,119 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-18 13:50:18,145 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 34 [2018-11-18 13:50:18,162 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-11-18 13:50:18,162 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-11-18 13:50:18,168 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:50:18,178 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:50:18,179 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:57, output treesize:38 [2018-11-18 13:50:18,532 WARN L307 Elim1Store]: Array PQE input equivalent to false [2018-11-18 13:50:18,533 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-18 13:50:18,535 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 3 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:50:18,535 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:51, output treesize:1 [2018-11-18 13:50:18,547 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 19 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-18 13:50:18,547 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 13:50:19,121 WARN L180 SmtUtils]: Spent 202.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2018-11-18 13:50:19,368 WARN L180 SmtUtils]: Spent 164.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2018-11-18 13:50:19,486 WARN L180 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2018-11-18 13:50:19,557 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:50:19,557 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7b24b183-b207-4250-b5e7-a548cbd6c0f6/bin-2019/utaipan/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 13:50:19,563 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:50:19,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:50:19,597 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:50:19,601 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-11-18 13:50:19,601 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-18 13:50:19,604 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:50:19,604 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-11-18 13:50:19,645 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-11-18 13:50:19,647 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-11-18 13:50:19,647 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 13:50:19,649 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:50:19,652 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:50:19,653 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:19, output treesize:15 [2018-11-18 13:50:19,800 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 10 [2018-11-18 13:50:19,803 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2018-11-18 13:50:19,804 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 13:50:19,808 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:50:19,843 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 10 [2018-11-18 13:50:19,846 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2018-11-18 13:50:19,847 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-18 13:50:19,850 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:50:19,866 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-18 13:50:19,867 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:46, output treesize:38 [2018-11-18 13:50:19,882 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 13:50:19,884 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 13:50:19,885 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 10 [2018-11-18 13:50:19,886 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-18 13:50:19,909 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 38 [2018-11-18 13:50:19,917 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-11-18 13:50:19,917 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-11-18 13:50:19,924 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:50:19,936 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:50:19,936 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:50, output treesize:33 [2018-11-18 13:50:20,234 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 19 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-18 13:50:20,235 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 13:50:20,505 WARN L180 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2018-11-18 13:50:20,710 WARN L180 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 56 [2018-11-18 13:50:20,819 WARN L180 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2018-11-18 13:50:22,897 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 13:50:22,898 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 25 [2018-11-18 13:50:22,898 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-11-18 13:50:22,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-11-18 13:50:22,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=813, Unknown=0, NotChecked=0, Total=930 [2018-11-18 13:50:22,898 INFO L87 Difference]: Start difference. First operand 43 states and 48 transitions. Second operand 25 states. [2018-11-18 13:50:27,440 WARN L180 SmtUtils]: Spent 4.09 s on a formula simplification that was a NOOP. DAG size: 62 [2018-11-18 13:50:28,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:50:28,993 INFO L93 Difference]: Finished difference Result 63 states and 70 transitions. [2018-11-18 13:50:28,994 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-11-18 13:50:28,994 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 52 [2018-11-18 13:50:28,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:50:28,994 INFO L225 Difference]: With dead ends: 63 [2018-11-18 13:50:28,994 INFO L226 Difference]: Without dead ends: 54 [2018-11-18 13:50:28,995 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 110 SyntacticMatches, 3 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 12.3s TimeCoverageRelationStatistics Valid=248, Invalid=1558, Unknown=0, NotChecked=0, Total=1806 [2018-11-18 13:50:28,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2018-11-18 13:50:29,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 47. [2018-11-18 13:50:29,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-11-18 13:50:29,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2018-11-18 13:50:29,001 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 52 [2018-11-18 13:50:29,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:50:29,001 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2018-11-18 13:50:29,002 INFO L481 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-11-18 13:50:29,002 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2018-11-18 13:50:29,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-11-18 13:50:29,002 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:50:29,002 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 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] [2018-11-18 13:50:29,003 INFO L423 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:50:29,003 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:50:29,003 INFO L82 PathProgramCache]: Analyzing trace with hash -1726293048, now seen corresponding path program 1 times [2018-11-18 13:50:29,003 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 13:50:29,003 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7b24b183-b207-4250-b5e7-a548cbd6c0f6/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 13:50:29,020 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:50:29,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:50:29,090 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:50:29,120 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 10 [2018-11-18 13:50:29,128 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2018-11-18 13:50:29,129 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 13:50:29,131 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:50:29,135 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:50:29,135 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:17, output treesize:13 [2018-11-18 13:50:29,239 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 20 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-18 13:50:29,239 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 13:50:29,652 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 20 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-18 13:50:29,653 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:50:29,653 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7b24b183-b207-4250-b5e7-a548cbd6c0f6/bin-2019/utaipan/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 13:50:29,660 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:50:29,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:50:29,690 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:50:29,696 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 10 [2018-11-18 13:50:29,698 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2018-11-18 13:50:29,698 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 13:50:29,700 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:50:29,705 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:50:29,705 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:17, output treesize:13 [2018-11-18 13:50:29,710 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 20 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-18 13:50:29,710 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 13:50:29,874 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 20 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2018-11-18 13:50:29,890 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2018-11-18 13:50:29,890 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12, 12] total 20 [2018-11-18 13:50:29,890 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-11-18 13:50:29,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-11-18 13:50:29,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=319, Unknown=0, NotChecked=0, Total=380 [2018-11-18 13:50:29,891 INFO L87 Difference]: Start difference. First operand 47 states and 53 transitions. Second operand 20 states. [2018-11-18 13:50:30,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:50:30,626 INFO L93 Difference]: Finished difference Result 66 states and 72 transitions. [2018-11-18 13:50:30,626 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-11-18 13:50:30,626 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 52 [2018-11-18 13:50:30,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:50:30,627 INFO L225 Difference]: With dead ends: 66 [2018-11-18 13:50:30,627 INFO L226 Difference]: Without dead ends: 53 [2018-11-18 13:50:30,628 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2018-11-18 13:50:30,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-11-18 13:50:30,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 47. [2018-11-18 13:50:30,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2018-11-18 13:50:30,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2018-11-18 13:50:30,633 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 52 [2018-11-18 13:50:30,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:50:30,633 INFO L480 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2018-11-18 13:50:30,633 INFO L481 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-11-18 13:50:30,633 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2018-11-18 13:50:30,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-11-18 13:50:30,634 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:50:30,634 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 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] [2018-11-18 13:50:30,635 INFO L423 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:50:30,635 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:50:30,635 INFO L82 PathProgramCache]: Analyzing trace with hash -1630674636, now seen corresponding path program 2 times [2018-11-18 13:50:30,636 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 13:50:30,636 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7b24b183-b207-4250-b5e7-a548cbd6c0f6/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 13:50:30,664 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2018-11-18 13:50:30,805 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 13:50:30,805 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 13:50:30,826 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:50:30,829 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-11-18 13:50:30,829 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-18 13:50:30,835 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:50:30,835 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2018-11-18 13:50:30,845 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-11-18 13:50:30,850 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-11-18 13:50:30,851 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 13:50:30,853 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:50:30,858 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:50:30,859 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:22, output treesize:18 [2018-11-18 13:50:30,982 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 10 [2018-11-18 13:50:30,986 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2018-11-18 13:50:30,986 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 13:50:30,992 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:50:31,031 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 10 [2018-11-18 13:50:31,034 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2018-11-18 13:50:31,034 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-18 13:50:31,037 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:50:31,065 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-18 13:50:31,065 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:52, output treesize:44 [2018-11-18 13:50:33,112 WARN L180 SmtUtils]: Spent 2.02 s on a formula simplification that was a NOOP. DAG size: 33 [2018-11-18 13:50:35,171 WARN L180 SmtUtils]: Spent 2.02 s on a formula simplification that was a NOOP. DAG size: 33 [2018-11-18 13:50:35,178 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 13:50:35,180 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 13:50:35,181 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 39 [2018-11-18 13:50:35,181 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-18 13:50:35,214 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 32 [2018-11-18 13:50:35,218 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-11-18 13:50:35,218 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-11-18 13:50:35,228 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:50:35,250 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:50:35,250 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:59, output treesize:53 [2018-11-18 13:50:37,559 WARN L180 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 33 [2018-11-18 13:50:39,769 WARN L180 SmtUtils]: Spent 2.04 s on a formula simplification that was a NOOP. DAG size: 33 [2018-11-18 13:50:39,783 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 13:50:39,783 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 13:50:39,784 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2018-11-18 13:50:39,784 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-18 13:50:39,883 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 30 [2018-11-18 13:50:39,889 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-11-18 13:50:39,889 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-11-18 13:50:39,903 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:50:39,955 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 13:50:39,959 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 55 [2018-11-18 13:50:39,964 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2018-11-18 13:50:39,964 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-11-18 13:50:39,979 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:50:40,023 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 13:50:40,028 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 28 [2018-11-18 13:50:40,034 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2018-11-18 13:50:40,034 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2018-11-18 13:50:40,044 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:50:40,062 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, 3 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:50:40,063 INFO L202 ElimStorePlain]: Needed 8 recursive calls to eliminate 6 variables, input treesize:91, output treesize:79 [2018-11-18 13:50:40,973 WARN L307 Elim1Store]: Array PQE input equivalent to false [2018-11-18 13:50:40,973 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-18 13:50:40,974 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 3 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:50:40,975 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:116, output treesize:1 [2018-11-18 13:50:40,992 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 17 proven. 24 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-18 13:50:40,993 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 13:50:42,010 WARN L180 SmtUtils]: Spent 195.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2018-11-18 13:50:42,262 WARN L180 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2018-11-18 13:50:42,391 WARN L180 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2018-11-18 13:50:42,683 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:50:42,683 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7b24b183-b207-4250-b5e7-a548cbd6c0f6/bin-2019/utaipan/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 13:50:42,689 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-18 13:50:42,736 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 13:50:42,736 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 13:50:42,739 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:50:42,742 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-11-18 13:50:42,742 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-18 13:50:42,745 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:50:42,746 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-11-18 13:50:42,821 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 8 [2018-11-18 13:50:42,823 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-11-18 13:50:42,823 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 13:50:42,825 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:50:42,828 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:50:42,829 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:19, output treesize:15 [2018-11-18 13:50:43,066 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 10 [2018-11-18 13:50:43,070 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2018-11-18 13:50:43,070 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 13:50:43,074 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:50:43,111 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 10 [2018-11-18 13:50:43,114 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2018-11-18 13:50:43,114 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-11-18 13:50:43,117 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:50:43,136 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-11-18 13:50:43,137 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:52, output treesize:44 [2018-11-18 13:50:43,150 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 13:50:43,158 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 13:50:43,159 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 41 [2018-11-18 13:50:43,160 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-18 13:50:43,204 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 38 [2018-11-18 13:50:43,208 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-11-18 13:50:43,208 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-11-18 13:50:43,218 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:50:43,241 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:50:43,241 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:58, output treesize:50 [2018-11-18 13:50:43,420 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 13:50:43,420 INFO L682 Elim1Store]: detected equality via solver [2018-11-18 13:50:43,421 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2018-11-18 13:50:43,421 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-18 13:50:43,520 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 13:50:43,521 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 57 [2018-11-18 13:50:43,528 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2018-11-18 13:50:43,529 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-11-18 13:50:43,554 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:50:43,615 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 32 [2018-11-18 13:50:43,628 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-11-18 13:50:43,628 INFO L267 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2018-11-18 13:50:43,641 INFO L267 ElimStorePlain]: Start of recursive call 5: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:50:43,687 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 13:50:43,694 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 36 [2018-11-18 13:50:43,698 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2018-11-18 13:50:43,699 INFO L267 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2018-11-18 13:50:43,706 INFO L267 ElimStorePlain]: Start of recursive call 7: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:50:43,724 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, 3 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:50:43,724 INFO L202 ElimStorePlain]: Needed 8 recursive calls to eliminate 6 variables, input treesize:86, output treesize:74 [2018-11-18 13:50:44,511 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 17 proven. 24 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-18 13:50:44,512 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 13:50:44,901 WARN L180 SmtUtils]: Spent 238.00 ms on a formula simplification that was a NOOP. DAG size: 45 [2018-11-18 13:50:45,164 WARN L180 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2018-11-18 13:50:45,292 WARN L180 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 52 [2018-11-18 13:50:47,519 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 13:50:47,520 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21] total 33 [2018-11-18 13:50:47,520 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2018-11-18 13:50:47,520 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2018-11-18 13:50:47,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=1411, Unknown=0, NotChecked=0, Total=1560 [2018-11-18 13:50:47,521 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 33 states. [2018-11-18 13:50:48,241 WARN L180 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 44 [2018-11-18 13:50:52,829 WARN L180 SmtUtils]: Spent 4.26 s on a formula simplification. DAG size of input: 84 DAG size of output: 49 [2018-11-18 13:50:57,304 WARN L180 SmtUtils]: Spent 4.11 s on a formula simplification. DAG size of input: 43 DAG size of output: 37 [2018-11-18 13:50:58,955 WARN L180 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 53 [2018-11-18 13:50:59,538 WARN L180 SmtUtils]: Spent 163.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2018-11-18 13:51:01,137 WARN L180 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2018-11-18 13:51:01,652 WARN L180 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 57 [2018-11-18 13:51:01,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:51:01,985 INFO L93 Difference]: Finished difference Result 69 states and 75 transitions. [2018-11-18 13:51:01,986 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-11-18 13:51:01,986 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 56 [2018-11-18 13:51:01,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:51:01,987 INFO L225 Difference]: With dead ends: 69 [2018-11-18 13:51:01,987 INFO L226 Difference]: Without dead ends: 60 [2018-11-18 13:51:01,988 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 118 SyntacticMatches, 3 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 594 ImplicationChecksByTransitivity, 25.1s TimeCoverageRelationStatistics Valid=324, Invalid=2756, Unknown=0, NotChecked=0, Total=3080 [2018-11-18 13:51:01,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2018-11-18 13:51:01,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 51. [2018-11-18 13:51:01,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-11-18 13:51:01,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 56 transitions. [2018-11-18 13:51:01,996 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 56 transitions. Word has length 56 [2018-11-18 13:51:01,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:51:01,997 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 56 transitions. [2018-11-18 13:51:01,997 INFO L481 AbstractCegarLoop]: Interpolant automaton has 33 states. [2018-11-18 13:51:01,997 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 56 transitions. [2018-11-18 13:51:01,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-11-18 13:51:01,998 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:51:01,998 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 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] [2018-11-18 13:51:01,998 INFO L423 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:51:01,998 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:51:01,998 INFO L82 PathProgramCache]: Analyzing trace with hash -2023701646, now seen corresponding path program 2 times [2018-11-18 13:51:01,999 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 13:51:01,999 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7b24b183-b207-4250-b5e7-a548cbd6c0f6/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 13:51:02,017 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-18 13:51:02,127 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 13:51:02,128 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 13:51:02,146 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:51:02,162 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-11-18 13:51:02,163 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-18 13:51:02,171 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:51:02,171 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2018-11-18 13:51:02,188 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 10 [2018-11-18 13:51:02,190 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2018-11-18 13:51:02,190 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 13:51:02,192 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:51:02,199 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:51:02,199 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:24, output treesize:20 [2018-11-18 13:51:02,302 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 10 [2018-11-18 13:51:02,305 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2018-11-18 13:51:02,305 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 13:51:02,308 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:51:02,321 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:51:02,321 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:35, output treesize:31 [2018-11-18 13:51:02,413 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 13:51:02,414 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 13:51:02,415 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 4 [2018-11-18 13:51:02,415 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-18 13:51:02,438 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 31 [2018-11-18 13:51:02,440 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2018-11-18 13:51:02,441 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-11-18 13:51:02,446 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:51:02,458 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:51:02,458 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:54, output treesize:45 [2018-11-18 13:51:02,739 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 19 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-18 13:51:02,739 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 13:51:11,510 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:51:11,510 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FPBP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7b24b183-b207-4250-b5e7-a548cbd6c0f6/bin-2019/utaipan/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 13:51:11,516 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-11-18 13:51:11,558 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-11-18 13:51:11,558 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2018-11-18 13:51:11,561 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:51:11,574 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-11-18 13:51:11,575 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-18 13:51:11,579 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:51:11,580 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:12 [2018-11-18 13:51:11,584 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 10 [2018-11-18 13:51:11,585 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2018-11-18 13:51:11,585 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 13:51:11,588 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:51:11,593 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:51:11,593 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:24, output treesize:20 [2018-11-18 13:51:11,602 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 10 [2018-11-18 13:51:11,605 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2018-11-18 13:51:11,605 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-11-18 13:51:11,608 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:51:11,620 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:51:11,621 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:35, output treesize:31 [2018-11-18 13:51:11,625 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 13:51:11,627 INFO L700 Elim1Store]: detected not equals via solver [2018-11-18 13:51:11,627 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 4 [2018-11-18 13:51:11,627 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-11-18 13:51:11,647 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 23 [2018-11-18 13:51:11,650 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2018-11-18 13:51:11,650 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-11-18 13:51:11,655 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:51:11,666 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-11-18 13:51:11,667 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 3 variables, input treesize:46, output treesize:37 [2018-11-18 13:51:11,703 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 19 proven. 22 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2018-11-18 13:51:11,703 INFO L316 TraceCheckSpWp]: Computing backward predicates... [2018-11-18 13:51:24,138 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 13:51:24,138 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2018-11-18 13:51:24,138 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-11-18 13:51:24,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-11-18 13:51:24,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=529, Unknown=3, NotChecked=0, Total=600 [2018-11-18 13:51:24,139 INFO L87 Difference]: Start difference. First operand 51 states and 56 transitions. Second operand 18 states. [2018-11-18 13:51:24,525 WARN L180 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 48 [2018-11-18 13:51:24,981 WARN L180 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 52 [2018-11-18 13:51:26,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:51:26,157 INFO L93 Difference]: Finished difference Result 69 states and 75 transitions. [2018-11-18 13:51:26,157 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2018-11-18 13:51:26,157 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 56 [2018-11-18 13:51:26,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-11-18 13:51:26,158 INFO L225 Difference]: With dead ends: 69 [2018-11-18 13:51:26,158 INFO L226 Difference]: Without dead ends: 56 [2018-11-18 13:51:26,159 INFO L604 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 134 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 334 ImplicationChecksByTransitivity, 22.3s TimeCoverageRelationStatistics Valid=317, Invalid=1750, Unknown=3, NotChecked=0, Total=2070 [2018-11-18 13:51:26,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-11-18 13:51:26,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 51. [2018-11-18 13:51:26,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2018-11-18 13:51:26,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2018-11-18 13:51:26,169 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 56 [2018-11-18 13:51:26,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-11-18 13:51:26,169 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2018-11-18 13:51:26,169 INFO L481 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-11-18 13:51:26,169 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2018-11-18 13:51:26,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2018-11-18 13:51:26,170 INFO L367 BasicCegarLoop]: Found error trace [2018-11-18 13:51:26,170 INFO L375 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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] [2018-11-18 13:51:26,170 INFO L423 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2018-11-18 13:51:26,171 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:51:26,171 INFO L82 PathProgramCache]: Analyzing trace with hash -1557928994, now seen corresponding path program 3 times [2018-11-18 13:51:26,171 INFO L223 ckRefinementStrategy]: Switched to mode CVC4_FPBP [2018-11-18 13:51:26,171 INFO L69 tionRefinementEngine]: Using refinement strategy WalrusRefinementStrategy No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_7b24b183-b207-4250-b5e7-a548cbd6c0f6/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 13:51:26,185 INFO L101 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2018-11-18 13:51:26,531 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2018-11-18 13:51:26,532 INFO L250 tOrderPrioritization]: Conjunction of SSA is sat [2018-11-18 13:51:26,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 13:51:26,797 INFO L442 BasicCegarLoop]: Counterexample might be feasible [2018-11-18 13:51:26,832 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,833 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,833 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,833 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,834 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,834 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,834 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,834 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,835 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,835 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,836 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,836 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,836 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,836 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,836 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 1111531792bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,837 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,837 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,837 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 1111531792bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,837 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,837 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 1111531792bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,838 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,838 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 1111531792bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,838 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,838 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,839 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 1446011531bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,839 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,839 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,839 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 1446011531bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,840 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 1446011531bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,840 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,840 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,840 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 1446011531bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,841 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,841 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,841 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,841 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 2730524941bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,841 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,842 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 2730524941bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,842 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 2730524941bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,842 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,842 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 2730524941bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,843 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,843 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,843 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,843 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,843 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,844 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,844 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,844 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,844 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,845 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,845 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,845 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,846 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,846 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,846 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,846 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,846 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,847 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,847 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,847 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,847 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,848 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,848 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,848 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,848 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,848 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,848 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,856 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.11 01:51:26 BoogieIcfgContainer [2018-11-18 13:51:26,856 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2018-11-18 13:51:26,857 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 13:51:26,857 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 13:51:26,857 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 13:51:26,857 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:50:11" (3/4) ... [2018-11-18 13:51:26,859 INFO L138 WitnessPrinter]: Generating witness for reachability counterexample [2018-11-18 13:51:26,871 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,872 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,872 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,872 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,872 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,872 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,873 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,873 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,873 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,873 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,873 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,873 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,874 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,874 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,874 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 1111531792bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,874 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,874 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 1111531792bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,875 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,876 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 1111531792bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,876 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,877 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 1111531792bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,877 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,877 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,877 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,877 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,877 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 1446011531bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,878 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,878 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 1446011531bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,878 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,878 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 1446011531bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,878 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 1446011531bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,878 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,879 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,879 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,879 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 2730524941bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,879 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,879 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,879 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 2730524941bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,880 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 2730524941bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,880 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,880 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 2730524941bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,880 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,880 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,880 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,881 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,881 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,881 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,881 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,881 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,881 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,882 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,882 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,882 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,882 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,883 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,883 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,883 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,883 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,883 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,883 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,884 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,884 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,884 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,884 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,884 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,884 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,885 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,885 WARN L1239 BoogieBacktranslator]: Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 [2018-11-18 13:51:26,922 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_7b24b183-b207-4250-b5e7-a548cbd6c0f6/bin-2019/utaipan/witness.graphml [2018-11-18 13:51:26,922 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 13:51:26,923 INFO L168 Benchmark]: Toolchain (without parser) took 75780.67 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 292.6 MB). Free memory was 945.4 MB in the beginning and 1.1 GB in the end (delta: -156.4 MB). Peak memory consumption was 136.2 MB. Max. memory is 11.5 GB. [2018-11-18 13:51:26,923 INFO L168 Benchmark]: CDTParser took 0.12 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 13:51:26,924 INFO L168 Benchmark]: CACSL2BoogieTranslator took 374.91 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.5 MB). Free memory was 945.4 MB in the beginning and 1.1 GB in the end (delta: -177.2 MB). Peak memory consumption was 44.9 MB. Max. memory is 11.5 GB. [2018-11-18 13:51:26,924 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.31 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. [2018-11-18 13:51:26,924 INFO L168 Benchmark]: Boogie Preprocessor took 20.07 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 13:51:26,924 INFO L168 Benchmark]: RCFGBuilder took 224.49 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 31.2 MB). Peak memory consumption was 31.2 MB. Max. memory is 11.5 GB. [2018-11-18 13:51:26,924 INFO L168 Benchmark]: TraceAbstraction took 75069.84 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 163.1 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -26.7 MB). Peak memory consumption was 136.4 MB. Max. memory is 11.5 GB. [2018-11-18 13:51:26,925 INFO L168 Benchmark]: Witness Printer took 65.54 ms. Allocated memory is still 1.3 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. [2018-11-18 13:51:26,926 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 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 374.91 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 129.5 MB). Free memory was 945.4 MB in the beginning and 1.1 GB in the end (delta: -177.2 MB). Peak memory consumption was 44.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 22.31 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 20.07 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 224.49 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 31.2 MB). Peak memory consumption was 31.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 75069.84 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 163.1 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -26.7 MB). Peak memory consumption was 136.4 MB. Max. memory is 11.5 GB. * Witness Printer took 65.54 ms. Allocated memory is still 1.3 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 1111531792bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 1111531792bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 1111531792bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 1111531792bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 1446011531bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 1446011531bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 1446011531bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 1446011531bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 2730524941bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 2730524941bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 2730524941bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 2730524941bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 1111531792bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 1111531792bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 1111531792bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 1111531792bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 1446011531bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 1446011531bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 1446011531bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 1446011531bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 2730524941bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 2730524941bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 2730524941bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 2730524941bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: BitvecLiteral 0bv32 could not be translated for associated CType *~mlist~0 * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L623] mlist *head; VAL [\old(head)=null, \old(head)=null, head={0:0}] [L644] int i; [L645] mlist *mylist, *temp; VAL [\old(head)=null, \old(head)=null, head={0:0}] [L646] CALL insert_list(mylist,2) VAL [\old(head)=null, \old(head)=null, \old(k)=2, head={0:0}, l={0:0}] [L632] EXPR, FCALL malloc(sizeof(mlist)) [L632] l = (mlist*)malloc(sizeof(mlist)) [L633] FCALL l->key = k VAL [\old(head)=null, \old(head)=null, \old(k)=2, head={0:0}, k=2, l={0:0}, l={1111531792:0}, malloc(sizeof(mlist))={1111531792:0}] [L634] COND TRUE head==((void *)0) [L635] FCALL l->next = ((void *)0) VAL [\old(head)=null, \old(head)=null, \old(k)=2, head={0:0}, k=2, l={1111531792:0}, l={0:0}, malloc(sizeof(mlist))={1111531792:0}] [L640] head = l [L641] RET return 0; VAL [\old(head)=null, \old(head)=null, \old(k)=2, \result=0, head={1111531792:0}, k=2, l={1111531792:0}, l={0:0}, malloc(sizeof(mlist))={1111531792:0}] [L646] insert_list(mylist,2) VAL [\old(head)=null, \old(head)=null, head={1111531792:0}, insert_list(mylist,2)=0, mylist={0:0}] [L647] CALL insert_list(mylist,5) VAL [\old(head)=null, \old(head)=null, \old(k)=5, head={1111531792:0}, l={0:0}] [L632] EXPR, FCALL malloc(sizeof(mlist)) [L632] l = (mlist*)malloc(sizeof(mlist)) [L633] FCALL l->key = k VAL [\old(head)=null, \old(head)=null, \old(k)=5, head={1111531792:0}, k=5, l={0:0}, l={1446011531:0}, malloc(sizeof(mlist))={1446011531:0}] [L634] COND FALSE !(head==((void *)0)) [L637] FCALL l->key = k [L638] FCALL l->next = head VAL [\old(head)=null, \old(head)=null, \old(k)=5, head={1111531792:0}, k=5, l={1446011531:0}, l={0:0}, malloc(sizeof(mlist))={1446011531:0}] [L640] head = l [L641] RET return 0; VAL [\old(head)=null, \old(head)=null, \old(k)=5, \result=0, head={1446011531:0}, k=5, l={1446011531:0}, l={0:0}, malloc(sizeof(mlist))={1446011531:0}] [L647] insert_list(mylist,5) VAL [\old(head)=null, \old(head)=null, head={1446011531:0}, insert_list(mylist,5)=0, mylist={0:0}] [L648] CALL insert_list(mylist,1) VAL [\old(head)=null, \old(head)=null, \old(k)=1, head={1446011531:0}, l={0:0}] [L632] EXPR, FCALL malloc(sizeof(mlist)) [L632] l = (mlist*)malloc(sizeof(mlist)) [L633] FCALL l->key = k VAL [\old(head)=null, \old(head)=null, \old(k)=1, head={1446011531:0}, k=1, l={0:0}, l={-1564442355:0}, malloc(sizeof(mlist))={-1564442355:0}] [L634] COND FALSE !(head==((void *)0)) [L637] FCALL l->key = k [L638] FCALL l->next = head VAL [\old(head)=null, \old(head)=null, \old(k)=1, head={1446011531:0}, k=1, l={0:0}, l={-1564442355:0}, malloc(sizeof(mlist))={-1564442355:0}] [L640] head = l [L641] RET return 0; VAL [\old(head)=null, \old(head)=null, \old(k)=1, \result=0, head={-1564442355:0}, k=1, l={0:0}, l={-1564442355:0}, malloc(sizeof(mlist))={-1564442355:0}] [L648] insert_list(mylist,1) VAL [\old(head)=null, \old(head)=null, head={-1564442355:0}, insert_list(mylist,1)=0, mylist={0:0}] [L649] CALL insert_list(mylist,3) VAL [\old(head)=null, \old(head)=null, \old(k)=3, head={-1564442355:0}, l={0:0}] [L632] EXPR, FCALL malloc(sizeof(mlist)) [L632] l = (mlist*)malloc(sizeof(mlist)) [L633] FCALL l->key = k VAL [\old(head)=null, \old(head)=null, \old(k)=3, head={-1564442355:0}, k=3, l={0:0}, l={1379082906:0}, malloc(sizeof(mlist))={1379082906:0}] [L634] COND FALSE !(head==((void *)0)) [L637] FCALL l->key = k [L638] FCALL l->next = head VAL [\old(head)=null, \old(head)=null, \old(k)=3, head={-1564442355:0}, k=3, l={1379082906:0}, l={0:0}, malloc(sizeof(mlist))={1379082906:0}] [L640] head = l [L641] RET return 0; VAL [\old(head)=null, \old(head)=null, \old(k)=3, \result=0, head={1379082906:0}, k=3, l={1379082906:0}, l={0:0}, malloc(sizeof(mlist))={1379082906:0}] [L649] insert_list(mylist,3) VAL [\old(head)=null, \old(head)=null, head={1379082906:0}, insert_list(mylist,3)=0, mylist={0:0}] [L650] CALL, EXPR search_list(head,2) VAL [\old(head)=null, \old(head)=null, \old(k)=2, head={1379082906:0}, l={1379082906:0}] [L625] l = head VAL [\old(head)=null, \old(head)=null, \old(k)=2, head={1379082906:0}, k=2, l={1379082906:0}, l={1379082906:0}] [L626] l!=((void *)0) && l->key!=k [L626] EXPR, FCALL l->key [L626] l!=((void *)0) && l->key!=k VAL [\old(head)=null, \old(head)=null, \old(k)=2, head={1379082906:0}, k=2, l={1379082906:0}, l={1379082906:0}, l!=((void *)0) && l->key!=k=1, l->key=3] [L626] COND TRUE l!=((void *)0) && l->key!=k [L627] EXPR, FCALL l->next [L627] l = l->next [L626] l!=((void *)0) && l->key!=k [L626] EXPR, FCALL l->key [L626] l!=((void *)0) && l->key!=k VAL [\old(head)=null, \old(head)=null, \old(k)=2, head={1379082906:0}, k=2, l={1379082906:0}, l={-1564442355:0}, l!=((void *)0) && l->key!=k=1, l->key=1] [L626] COND TRUE l!=((void *)0) && l->key!=k [L627] EXPR, FCALL l->next [L627] l = l->next [L626] l!=((void *)0) && l->key!=k [L626] EXPR, FCALL l->key [L626] l!=((void *)0) && l->key!=k VAL [\old(head)=null, \old(head)=null, \old(k)=2, head={1379082906:0}, k=2, l={1446011531:0}, l={1379082906:0}, l!=((void *)0) && l->key!=k=1, l->key=5] [L626] COND TRUE l!=((void *)0) && l->key!=k [L627] EXPR, FCALL l->next [L627] l = l->next [L626] l!=((void *)0) && l->key!=k [L626] EXPR, FCALL l->key [L626] l!=((void *)0) && l->key!=k VAL [\old(head)=null, \old(head)=null, \old(k)=2, head={1379082906:0}, k=2, l={1379082906:0}, l={1111531792:0}, l!=((void *)0) && l->key!=k=0, l->key=2] [L626] COND FALSE !(l!=((void *)0) && l->key!=k) [L629] RET return l; VAL [\old(head)=null, \old(head)=null, \old(k)=2, \result={1111531792:0}, head={1379082906:0}, k=2, l={1111531792:0}, l={1379082906:0}] [L650] EXPR search_list(head,2) VAL [\old(head)=null, \old(head)=null, head={1379082906:0}, mylist={0:0}, search_list(head,2)={1111531792:0}] [L650] temp = search_list(head,2) [L651] EXPR, FCALL temp->key VAL [\old(head)=null, \old(head)=null, head={1379082906:0}, mylist={0:0}, temp={1111531792:0}, temp->key=2] [L651] CALL __VERIFIER_assert(temp->key==1) VAL [\old(cond)=0, \old(head)=null, \old(head)=null, head={1379082906:0}] [L4] COND TRUE !(cond) VAL [\old(cond)=0, \old(head)=null, \old(head)=null, cond=0, head={1379082906:0}] [L5] __VERIFIER_error() VAL [\old(cond)=0, \old(head)=null, \old(head)=null, cond=0, head={1379082906:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 43 locations, 1 error locations. UNSAFE Result, 75.0s OverallTime, 9 OverallIterations, 4 TraceHistogramMax, 24.0s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 253 SDtfs, 461 SDslu, 758 SDs, 0 SdLazy, 2461 SolverSat, 262 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1078 GetRequests, 867 SyntacticMatches, 8 SemanticMatches, 203 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1499 ImplicationChecksByTransitivity, 61.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=51occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 43 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.1s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 49.0s InterpolantComputationTime, 729 NumberOfCodeBlocks, 729 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 852 ConstructedInterpolants, 18 QuantifiedInterpolants, 580515 SizeOfPredicates, 168 NumberOfNonLiveVariables, 2785 ConjunctsInSsa, 332 ConjunctsInUnsatCore, 17 InterpolantComputations, 3 PerfectInterpolantSequences, 394/582 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...