./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product48.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_44275414-4320-4936-ac48-bf0726b45670/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_44275414-4320-4936-ac48-bf0726b45670/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_44275414-4320-4936-ac48-bf0726b45670/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_44275414-4320-4936-ac48-bf0726b45670/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product48.cil.c -s /tmp/vcloud-vcloud-master/worker/working_dir_44275414-4320-4936-ac48-bf0726b45670/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_44275414-4320-4936-ac48-bf0726b45670/bin/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 5f57b6f2bb2bb4fa43dac897ff23a28c21886d7b ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_44275414-4320-4936-ac48-bf0726b45670/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_44275414-4320-4936-ac48-bf0726b45670/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_44275414-4320-4936-ac48-bf0726b45670/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_44275414-4320-4936-ac48-bf0726b45670/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product48.cil.c -s /tmp/vcloud-vcloud-master/worker/working_dir_44275414-4320-4936-ac48-bf0726b45670/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_44275414-4320-4936-ac48-bf0726b45670/bin/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 5f57b6f2bb2bb4fa43dac897ff23a28c21886d7b ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 0.1.24-cad4683 [2019-10-22 11:26:52,156 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:26:52,158 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:26:52,168 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:26:52,168 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:26:52,169 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:26:52,170 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:26:52,172 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:26:52,174 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:26:52,174 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:26:52,175 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:26:52,176 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:26:52,176 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:26:52,177 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:26:52,178 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:26:52,179 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:26:52,180 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:26:52,181 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:26:52,182 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:26:52,184 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:26:52,185 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:26:52,186 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:26:52,187 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:26:52,187 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:26:52,190 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:26:52,190 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:26:52,190 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:26:52,191 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:26:52,191 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:26:52,192 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:26:52,192 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:26:52,193 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:26:52,194 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:26:52,194 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:26:52,195 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:26:52,195 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:26:52,196 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:26:52,196 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:26:52,196 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:26:52,197 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:26:52,198 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:26:52,199 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_44275414-4320-4936-ac48-bf0726b45670/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-10-22 11:26:52,210 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:26:52,210 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:26:52,211 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:26:52,211 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:26:52,211 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:26:52,211 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:26:52,212 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-10-22 11:26:52,212 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:26:52,212 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:26:52,212 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-10-22 11:26:52,212 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-10-22 11:26:52,212 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:26:52,213 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:26:52,213 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:26:52,214 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 11:26:52,214 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:26:52,214 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:26:52,214 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:26:52,214 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:26:52,214 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:26:52,215 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:26:52,215 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:26:52,215 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:26:52,215 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:26:52,215 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:26:52,215 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:26:52,216 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:26:52,216 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:26:52,216 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:26:52,216 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:26:52,216 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:26:52,216 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-22 11:26:52,217 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 11:26:52,217 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:26:52,217 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:26:52,218 INFO L138 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_44275414-4320-4936-ac48-bf0726b45670/bin/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 -> 5f57b6f2bb2bb4fa43dac897ff23a28c21886d7b [2019-10-22 11:26:52,243 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:26:52,253 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:26:52,256 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:26:52,257 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:26:52,258 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:26:52,258 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_44275414-4320-4936-ac48-bf0726b45670/bin/utaipan/../../sv-benchmarks/c/product-lines/minepump_spec4_product48.cil.c [2019-10-22 11:26:52,311 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_44275414-4320-4936-ac48-bf0726b45670/bin/utaipan/data/8c3cd6b94/a68d2ea962ef4167a19dfb09a46a4d1a/FLAGe96b012e4 [2019-10-22 11:26:52,760 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:26:52,760 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_44275414-4320-4936-ac48-bf0726b45670/sv-benchmarks/c/product-lines/minepump_spec4_product48.cil.c [2019-10-22 11:26:52,782 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_44275414-4320-4936-ac48-bf0726b45670/bin/utaipan/data/8c3cd6b94/a68d2ea962ef4167a19dfb09a46a4d1a/FLAGe96b012e4 [2019-10-22 11:26:53,113 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_44275414-4320-4936-ac48-bf0726b45670/bin/utaipan/data/8c3cd6b94/a68d2ea962ef4167a19dfb09a46a4d1a [2019-10-22 11:26:53,115 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:26:53,116 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:26:53,117 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:26:53,118 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:26:53,121 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:26:53,122 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:26:53" (1/1) ... [2019-10-22 11:26:53,125 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7189f5db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:53, skipping insertion in model container [2019-10-22 11:26:53,125 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:26:53" (1/1) ... [2019-10-22 11:26:53,133 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:26:53,173 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:26:53,496 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:26:53,516 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:26:53,585 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:26:53,612 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:26:53,613 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:53 WrapperNode [2019-10-22 11:26:53,613 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:26:53,614 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:26:53,614 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:26:53,614 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:26:53,622 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:53" (1/1) ... [2019-10-22 11:26:53,651 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:53" (1/1) ... [2019-10-22 11:26:53,717 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:26:53,724 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:26:53,724 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:26:53,724 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:26:53,734 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:53" (1/1) ... [2019-10-22 11:26:53,734 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:53" (1/1) ... [2019-10-22 11:26:53,738 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:53" (1/1) ... [2019-10-22 11:26:53,750 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:53" (1/1) ... [2019-10-22 11:26:53,760 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:53" (1/1) ... [2019-10-22 11:26:53,790 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:53" (1/1) ... [2019-10-22 11:26:53,792 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:53" (1/1) ... [2019-10-22 11:26:53,796 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:26:53,801 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:26:53,801 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:26:53,801 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:26:53,802 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:53" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_44275414-4320-4936-ac48-bf0726b45670/bin/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 [2019-10-22 11:26:53,866 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 11:26:53,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-22 11:26:53,866 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:26:53,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:26:54,658 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:26:54,659 INFO L284 CfgBuilder]: Removed 198 assume(true) statements. [2019-10-22 11:26:54,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:26:54 BoogieIcfgContainer [2019-10-22 11:26:54,660 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:26:54,662 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:26:54,662 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:26:54,665 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:26:54,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:26:53" (1/3) ... [2019-10-22 11:26:54,666 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b321e37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:26:54, skipping insertion in model container [2019-10-22 11:26:54,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:26:53" (2/3) ... [2019-10-22 11:26:54,667 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b321e37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:26:54, skipping insertion in model container [2019-10-22 11:26:54,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:26:54" (3/3) ... [2019-10-22 11:26:54,669 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product48.cil.c [2019-10-22 11:26:54,678 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:26:54,685 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-10-22 11:26:54,693 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-10-22 11:26:54,736 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:26:54,737 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:26:54,737 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:26:54,737 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:26:54,737 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:26:54,737 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:26:54,737 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:26:54,737 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:26:54,764 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states. [2019-10-22 11:26:54,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-22 11:26:54,772 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:54,772 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:26:54,775 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:54,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:54,782 INFO L82 PathProgramCache]: Analyzing trace with hash 325683581, now seen corresponding path program 1 times [2019-10-22 11:26:54,792 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:26:54,792 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833235543] [2019-10-22 11:26:54,792 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:54,792 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:54,793 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:26:54,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:55,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:26:55,036 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833235543] [2019-10-22 11:26:55,037 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:26:55,037 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 11:26:55,038 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807923760] [2019-10-22 11:26:55,042 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-22 11:26:55,044 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:26:55,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-22 11:26:55,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 11:26:55,057 INFO L87 Difference]: Start difference. First operand 131 states. Second operand 2 states. [2019-10-22 11:26:55,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:55,088 INFO L93 Difference]: Finished difference Result 256 states and 383 transitions. [2019-10-22 11:26:55,088 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 11:26:55,089 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2019-10-22 11:26:55,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:55,104 INFO L225 Difference]: With dead ends: 256 [2019-10-22 11:26:55,105 INFO L226 Difference]: Without dead ends: 127 [2019-10-22 11:26:55,109 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 11:26:55,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2019-10-22 11:26:55,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2019-10-22 11:26:55,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2019-10-22 11:26:55,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 183 transitions. [2019-10-22 11:26:55,149 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 183 transitions. Word has length 16 [2019-10-22 11:26:55,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:55,150 INFO L462 AbstractCegarLoop]: Abstraction has 127 states and 183 transitions. [2019-10-22 11:26:55,150 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-22 11:26:55,150 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 183 transitions. [2019-10-22 11:26:55,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-22 11:26:55,151 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:55,151 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:26:55,151 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:55,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:55,152 INFO L82 PathProgramCache]: Analyzing trace with hash 1302516555, now seen corresponding path program 1 times [2019-10-22 11:26:55,152 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:26:55,152 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818713446] [2019-10-22 11:26:55,152 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:55,152 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:55,153 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:26:55,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:55,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:26:55,234 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818713446] [2019-10-22 11:26:55,235 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:26:55,235 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 11:26:55,235 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475859447] [2019-10-22 11:26:55,236 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:26:55,237 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:26:55,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:26:55,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:26:55,238 INFO L87 Difference]: Start difference. First operand 127 states and 183 transitions. Second operand 3 states. [2019-10-22 11:26:55,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:55,250 INFO L93 Difference]: Finished difference Result 127 states and 183 transitions. [2019-10-22 11:26:55,251 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:26:55,251 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2019-10-22 11:26:55,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:55,252 INFO L225 Difference]: With dead ends: 127 [2019-10-22 11:26:55,252 INFO L226 Difference]: Without dead ends: 53 [2019-10-22 11:26:55,253 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:26:55,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2019-10-22 11:26:55,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2019-10-22 11:26:55,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2019-10-22 11:26:55,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 76 transitions. [2019-10-22 11:26:55,258 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 76 transitions. Word has length 17 [2019-10-22 11:26:55,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:55,258 INFO L462 AbstractCegarLoop]: Abstraction has 53 states and 76 transitions. [2019-10-22 11:26:55,258 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:26:55,259 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 76 transitions. [2019-10-22 11:26:55,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-10-22 11:26:55,259 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:55,259 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:26:55,260 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:55,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:55,260 INFO L82 PathProgramCache]: Analyzing trace with hash -1189907750, now seen corresponding path program 1 times [2019-10-22 11:26:55,260 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:26:55,260 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402487427] [2019-10-22 11:26:55,260 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:55,261 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:55,261 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:26:55,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:55,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:26:55,338 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402487427] [2019-10-22 11:26:55,338 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:26:55,338 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 11:26:55,338 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544885021] [2019-10-22 11:26:55,339 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:26:55,339 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:26:55,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:26:55,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:26:55,340 INFO L87 Difference]: Start difference. First operand 53 states and 76 transitions. Second operand 5 states. [2019-10-22 11:26:55,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:55,412 INFO L93 Difference]: Finished difference Result 123 states and 180 transitions. [2019-10-22 11:26:55,413 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 11:26:55,413 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2019-10-22 11:26:55,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:55,414 INFO L225 Difference]: With dead ends: 123 [2019-10-22 11:26:55,414 INFO L226 Difference]: Without dead ends: 76 [2019-10-22 11:26:55,414 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-10-22 11:26:55,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2019-10-22 11:26:55,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 72. [2019-10-22 11:26:55,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2019-10-22 11:26:55,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 105 transitions. [2019-10-22 11:26:55,434 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 105 transitions. Word has length 22 [2019-10-22 11:26:55,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:55,435 INFO L462 AbstractCegarLoop]: Abstraction has 72 states and 105 transitions. [2019-10-22 11:26:55,435 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:26:55,435 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 105 transitions. [2019-10-22 11:26:55,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-10-22 11:26:55,435 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:55,436 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:26:55,436 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:55,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:55,436 INFO L82 PathProgramCache]: Analyzing trace with hash 752688312, now seen corresponding path program 1 times [2019-10-22 11:26:55,436 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:26:55,437 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885314695] [2019-10-22 11:26:55,441 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:55,441 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:55,441 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:26:55,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:55,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:26:55,553 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885314695] [2019-10-22 11:26:55,553 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:26:55,553 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 11:26:55,554 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134217950] [2019-10-22 11:26:55,554 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:26:55,554 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:26:55,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:26:55,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:26:55,555 INFO L87 Difference]: Start difference. First operand 72 states and 105 transitions. Second operand 3 states. [2019-10-22 11:26:55,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:55,594 INFO L93 Difference]: Finished difference Result 159 states and 234 transitions. [2019-10-22 11:26:55,595 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:26:55,595 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2019-10-22 11:26:55,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:55,596 INFO L225 Difference]: With dead ends: 159 [2019-10-22 11:26:55,596 INFO L226 Difference]: Without dead ends: 93 [2019-10-22 11:26:55,597 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:26:55,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2019-10-22 11:26:55,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 91. [2019-10-22 11:26:55,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2019-10-22 11:26:55,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 129 transitions. [2019-10-22 11:26:55,605 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 129 transitions. Word has length 24 [2019-10-22 11:26:55,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:55,606 INFO L462 AbstractCegarLoop]: Abstraction has 91 states and 129 transitions. [2019-10-22 11:26:55,606 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:26:55,606 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 129 transitions. [2019-10-22 11:26:55,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-10-22 11:26:55,607 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:55,607 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:26:55,607 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:55,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:55,608 INFO L82 PathProgramCache]: Analyzing trace with hash -1744683281, now seen corresponding path program 1 times [2019-10-22 11:26:55,608 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:26:55,608 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109198213] [2019-10-22 11:26:55,608 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:55,609 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:55,609 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:26:55,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:55,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:26:55,715 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109198213] [2019-10-22 11:26:55,716 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:26:55,716 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-22 11:26:55,716 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304452473] [2019-10-22 11:26:55,717 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-22 11:26:55,717 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:26:55,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 11:26:55,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-22 11:26:55,718 INFO L87 Difference]: Start difference. First operand 91 states and 129 transitions. Second operand 8 states. [2019-10-22 11:26:56,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:56,104 INFO L93 Difference]: Finished difference Result 585 states and 851 transitions. [2019-10-22 11:26:56,105 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-22 11:26:56,105 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2019-10-22 11:26:56,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:56,107 INFO L225 Difference]: With dead ends: 585 [2019-10-22 11:26:56,108 INFO L226 Difference]: Without dead ends: 500 [2019-10-22 11:26:56,108 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2019-10-22 11:26:56,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2019-10-22 11:26:56,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 227. [2019-10-22 11:26:56,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2019-10-22 11:26:56,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 316 transitions. [2019-10-22 11:26:56,140 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 316 transitions. Word has length 25 [2019-10-22 11:26:56,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:56,141 INFO L462 AbstractCegarLoop]: Abstraction has 227 states and 316 transitions. [2019-10-22 11:26:56,141 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-22 11:26:56,141 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 316 transitions. [2019-10-22 11:26:56,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2019-10-22 11:26:56,143 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:56,143 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:26:56,143 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:56,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:56,144 INFO L82 PathProgramCache]: Analyzing trace with hash 31993027, now seen corresponding path program 1 times [2019-10-22 11:26:56,144 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:26:56,144 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967344481] [2019-10-22 11:26:56,144 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:56,144 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:56,145 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:26:56,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:56,220 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2019-10-22 11:26:56,220 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967344481] [2019-10-22 11:26:56,220 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:26:56,221 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 11:26:56,221 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329334133] [2019-10-22 11:26:56,221 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:26:56,221 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:26:56,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:26:56,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:26:56,222 INFO L87 Difference]: Start difference. First operand 227 states and 316 transitions. Second operand 5 states. [2019-10-22 11:26:56,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:56,405 INFO L93 Difference]: Finished difference Result 543 states and 767 transitions. [2019-10-22 11:26:56,406 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-22 11:26:56,406 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 41 [2019-10-22 11:26:56,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:56,409 INFO L225 Difference]: With dead ends: 543 [2019-10-22 11:26:56,409 INFO L226 Difference]: Without dead ends: 541 [2019-10-22 11:26:56,409 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-10-22 11:26:56,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2019-10-22 11:26:56,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 227. [2019-10-22 11:26:56,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2019-10-22 11:26:56,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 314 transitions. [2019-10-22 11:26:56,453 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 314 transitions. Word has length 41 [2019-10-22 11:26:56,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:56,455 INFO L462 AbstractCegarLoop]: Abstraction has 227 states and 314 transitions. [2019-10-22 11:26:56,455 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:26:56,455 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 314 transitions. [2019-10-22 11:26:56,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-10-22 11:26:56,457 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:56,457 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:26:56,457 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:56,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:56,458 INFO L82 PathProgramCache]: Analyzing trace with hash 501007855, now seen corresponding path program 1 times [2019-10-22 11:26:56,458 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:26:56,458 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833504419] [2019-10-22 11:26:56,458 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:56,458 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:56,458 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:26:56,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:56,529 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-10-22 11:26:56,530 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833504419] [2019-10-22 11:26:56,530 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:26:56,530 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 11:26:56,530 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747614411] [2019-10-22 11:26:56,531 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:26:56,531 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:26:56,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:26:56,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:26:56,531 INFO L87 Difference]: Start difference. First operand 227 states and 314 transitions. Second operand 5 states. [2019-10-22 11:26:56,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:56,622 INFO L93 Difference]: Finished difference Result 680 states and 933 transitions. [2019-10-22 11:26:56,623 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 11:26:56,623 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 51 [2019-10-22 11:26:56,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:56,625 INFO L225 Difference]: With dead ends: 680 [2019-10-22 11:26:56,625 INFO L226 Difference]: Without dead ends: 459 [2019-10-22 11:26:56,626 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-22 11:26:56,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2019-10-22 11:26:56,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 242. [2019-10-22 11:26:56,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2019-10-22 11:26:56,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 329 transitions. [2019-10-22 11:26:56,657 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 329 transitions. Word has length 51 [2019-10-22 11:26:56,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:56,658 INFO L462 AbstractCegarLoop]: Abstraction has 242 states and 329 transitions. [2019-10-22 11:26:56,658 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:26:56,658 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 329 transitions. [2019-10-22 11:26:56,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-10-22 11:26:56,665 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:56,665 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:26:56,666 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:56,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:56,666 INFO L82 PathProgramCache]: Analyzing trace with hash -85798159, now seen corresponding path program 1 times [2019-10-22 11:26:56,666 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:26:56,666 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366026354] [2019-10-22 11:26:56,666 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:56,666 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:56,667 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:26:56,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:56,730 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-10-22 11:26:56,730 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366026354] [2019-10-22 11:26:56,730 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:26:56,730 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 11:26:56,731 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499511150] [2019-10-22 11:26:56,731 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 11:26:56,731 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:26:56,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 11:26:56,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 11:26:56,732 INFO L87 Difference]: Start difference. First operand 242 states and 329 transitions. Second operand 4 states. [2019-10-22 11:26:56,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:56,804 INFO L93 Difference]: Finished difference Result 560 states and 760 transitions. [2019-10-22 11:26:56,805 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 11:26:56,805 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2019-10-22 11:26:56,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:56,808 INFO L225 Difference]: With dead ends: 560 [2019-10-22 11:26:56,808 INFO L226 Difference]: Without dead ends: 324 [2019-10-22 11:26:56,809 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:26:56,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2019-10-22 11:26:56,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 211. [2019-10-22 11:26:56,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2019-10-22 11:26:56,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 282 transitions. [2019-10-22 11:26:56,830 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 282 transitions. Word has length 51 [2019-10-22 11:26:56,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:56,831 INFO L462 AbstractCegarLoop]: Abstraction has 211 states and 282 transitions. [2019-10-22 11:26:56,831 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 11:26:56,831 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 282 transitions. [2019-10-22 11:26:56,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-10-22 11:26:56,834 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:56,836 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:26:56,836 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:56,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:56,836 INFO L82 PathProgramCache]: Analyzing trace with hash 1687322796, now seen corresponding path program 1 times [2019-10-22 11:26:56,836 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:26:56,837 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745506983] [2019-10-22 11:26:56,837 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:56,837 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:26:56,837 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:26:56,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:56,928 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:26:56,928 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745506983] [2019-10-22 11:26:56,928 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1161944671] [2019-10-22 11:26:56,929 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_44275414-4320-4936-ac48-bf0726b45670/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:26:57,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:26:57,045 INFO L256 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-22 11:26:57,052 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:26:57,086 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:26:57,086 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:26:57,115 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:26:57,116 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [1770907056] [2019-10-22 11:26:57,122 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 54 [2019-10-22 11:26:57,170 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2019-10-22 11:26:57,170 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-22 11:26:57,608 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:26:57,608 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: inappropriate decl info IMPLEMENTATION at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Boogie2SmtSymbolTable.getBoogieVar(Boogie2SmtSymbolTable.java:222) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.getBoogieVar(NonrelationalStatementProcessor.java:348) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.handleHavocStatement(NonrelationalStatementProcessor.java:325) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.processStatement(NonrelationalStatementProcessor.java:159) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.process(NonrelationalStatementProcessor.java:138) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.process(NonrelationalStatementProcessor.java:107) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.handleInternalTransition(NonrelationalPostOperator.java:422) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.handleInternalTransition(NonrelationalPostOperator.java:413) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.apply(NonrelationalPostOperator.java:140) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.apply(NonrelationalPostOperator.java:1) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.compound.CompoundDomainPostOperator.applyInternally(CompoundDomainPostOperator.java:306) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.compound.CompoundDomainPostOperator.apply(CompoundDomainPostOperator.java:131) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.compound.CompoundDomainPostOperator.apply(CompoundDomainPostOperator.java:1) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormanCachedPostOperation.restoreOriginalStateVariables(PoormanCachedPostOperation.java:322) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormansAbstractPostOperator.applyPost(PoormansAbstractPostOperator.java:217) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormansAbstractPostOperator.apply(PoormansAbstractPostOperator.java:120) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormansAbstractPostOperator.apply(PoormansAbstractPostOperator.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.absint.DisjunctiveAbstractState.lambda$17(DisjunctiveAbstractState.java:323) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.absint.DisjunctiveAbstractState.mapCollection(DisjunctiveAbstractState.java:519) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.absint.DisjunctiveAbstractState.apply(DisjunctiveAbstractState.java:323) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.algorithm.FixpointEngine.calculateAbstractPost(FixpointEngine.java:249) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.algorithm.FixpointEngine.calculateFixpoint(FixpointEngine.java:134) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.algorithm.FixpointEngine.run(FixpointEngine.java:105) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.tool.AbstractInterpreter.runWithoutTimeoutAndResults(AbstractInterpreter.java:149) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarAbsIntRunner.generateFixpoints(CegarAbsIntRunner.java:227) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarAbsIntRunner.(CegarAbsIntRunner.java:158) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleAbstractInterpretation.getOrConstructRunner(IpTcStrategyModuleAbstractInterpretation.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleAbstractInterpretation.construct(IpTcStrategyModuleAbstractInterpretation.java:81) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:299) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.generateProof(TraceAbstractionRefinementEngine.java:184) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) 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) [2019-10-22 11:26:57,614 INFO L168 Benchmark]: Toolchain (without parser) took 4497.08 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 940.4 MB in the beginning and 954.6 MB in the end (delta: -14.2 MB). Peak memory consumption was 125.2 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:57,615 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 966.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:26:57,615 INFO L168 Benchmark]: CACSL2BoogieTranslator took 495.91 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 939.0 MB in the beginning and 1.1 GB in the end (delta: -177.6 MB). Peak memory consumption was 21.8 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:57,616 INFO L168 Benchmark]: Boogie Procedure Inliner took 109.92 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: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:57,616 INFO L168 Benchmark]: Boogie Preprocessor took 76.94 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: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:57,617 INFO L168 Benchmark]: RCFGBuilder took 859.05 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 68.1 MB). Peak memory consumption was 68.1 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:57,618 INFO L168 Benchmark]: TraceAbstraction took 2950.39 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 954.6 MB in the end (delta: 85.9 MB). Peak memory consumption was 85.9 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:57,621 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 966.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 495.91 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 139.5 MB). Free memory was 939.0 MB in the beginning and 1.1 GB in the end (delta: -177.6 MB). Peak memory consumption was 21.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 109.92 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: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 76.94 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: 4.0 MB). Peak memory consumption was 4.0 MB. Max. memory is 11.5 GB. * RCFGBuilder took 859.05 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 68.1 MB). Peak memory consumption was 68.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2950.39 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 954.6 MB in the end (delta: 85.9 MB). Peak memory consumption was 85.9 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: inappropriate decl info IMPLEMENTATION de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: inappropriate decl info IMPLEMENTATION: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Boogie2SmtSymbolTable.getBoogieVar(Boogie2SmtSymbolTable.java:222) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-cad4683 [2019-10-22 11:26:59,728 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:26:59,730 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:26:59,743 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:26:59,744 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:26:59,744 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:26:59,746 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:26:59,747 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:26:59,748 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:26:59,753 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:26:59,755 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:26:59,757 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:26:59,765 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:26:59,766 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:26:59,767 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:26:59,767 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:26:59,768 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:26:59,769 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:26:59,770 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:26:59,772 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:26:59,774 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:26:59,775 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:26:59,775 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:26:59,776 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:26:59,778 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:26:59,779 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:26:59,779 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:26:59,780 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:26:59,780 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:26:59,781 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:26:59,781 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:26:59,782 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:26:59,782 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:26:59,783 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:26:59,784 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:26:59,784 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:26:59,785 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:26:59,785 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:26:59,785 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:26:59,786 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:26:59,786 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:26:59,787 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_44275414-4320-4936-ac48-bf0726b45670/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2019-10-22 11:26:59,806 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:26:59,806 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:26:59,807 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:26:59,807 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:26:59,807 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:26:59,807 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:26:59,807 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:26:59,808 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:26:59,808 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:26:59,808 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:26:59,809 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:26:59,809 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:26:59,809 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:26:59,809 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:26:59,809 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:26:59,809 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:26:59,809 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-10-22 11:26:59,810 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-10-22 11:26:59,810 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:26:59,810 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:26:59,810 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 11:26:59,810 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:26:59,810 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:26:59,810 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:26:59,811 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:26:59,811 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:26:59,811 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:26:59,811 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:26:59,811 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:26:59,811 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:26:59,811 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-10-22 11:26:59,812 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-10-22 11:26:59,812 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:26:59,812 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:26:59,812 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_44275414-4320-4936-ac48-bf0726b45670/bin/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 -> 5f57b6f2bb2bb4fa43dac897ff23a28c21886d7b [2019-10-22 11:26:59,844 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:26:59,857 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:26:59,860 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:26:59,862 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:26:59,863 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:26:59,863 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_44275414-4320-4936-ac48-bf0726b45670/bin/utaipan/../../sv-benchmarks/c/product-lines/minepump_spec4_product48.cil.c [2019-10-22 11:26:59,914 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_44275414-4320-4936-ac48-bf0726b45670/bin/utaipan/data/191116897/588d5e9ce88042a59e74672d015dd20e/FLAG4ffe18744 [2019-10-22 11:27:00,449 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:27:00,449 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_44275414-4320-4936-ac48-bf0726b45670/sv-benchmarks/c/product-lines/minepump_spec4_product48.cil.c [2019-10-22 11:27:00,463 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_44275414-4320-4936-ac48-bf0726b45670/bin/utaipan/data/191116897/588d5e9ce88042a59e74672d015dd20e/FLAG4ffe18744 [2019-10-22 11:27:00,697 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_44275414-4320-4936-ac48-bf0726b45670/bin/utaipan/data/191116897/588d5e9ce88042a59e74672d015dd20e [2019-10-22 11:27:00,700 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:27:00,702 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:27:00,703 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:27:00,705 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:27:00,709 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:27:00,710 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:27:00" (1/1) ... [2019-10-22 11:27:00,712 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5adba133 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:27:00, skipping insertion in model container [2019-10-22 11:27:00,712 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:27:00" (1/1) ... [2019-10-22 11:27:00,720 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:27:00,760 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:27:01,057 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:27:01,074 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:27:01,248 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:27:01,285 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:27:01,285 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:27:01 WrapperNode [2019-10-22 11:27:01,285 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:27:01,286 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:27:01,287 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:27:01,287 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:27:01,296 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:27:01" (1/1) ... [2019-10-22 11:27:01,315 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:27:01" (1/1) ... [2019-10-22 11:27:01,364 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:27:01,364 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:27:01,365 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:27:01,365 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:27:01,373 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:27:01" (1/1) ... [2019-10-22 11:27:01,374 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:27:01" (1/1) ... [2019-10-22 11:27:01,379 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:27:01" (1/1) ... [2019-10-22 11:27:01,379 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:27:01" (1/1) ... [2019-10-22 11:27:01,399 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:27:01" (1/1) ... [2019-10-22 11:27:01,406 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:27:01" (1/1) ... [2019-10-22 11:27:01,409 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:27:01" (1/1) ... [2019-10-22 11:27:01,414 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:27:01,414 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:27:01,414 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:27:01,414 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:27:01,415 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:27:01" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_44275414-4320-4936-ac48-bf0726b45670/bin/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 [2019-10-22 11:27:01,465 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 11:27:01,466 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2019-10-22 11:27:01,466 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:27:01,466 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:27:02,485 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:27:02,486 INFO L284 CfgBuilder]: Removed 198 assume(true) statements. [2019-10-22 11:27:02,487 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:27:02 BoogieIcfgContainer [2019-10-22 11:27:02,487 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:27:02,488 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:27:02,488 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:27:02,492 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:27:02,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:27:00" (1/3) ... [2019-10-22 11:27:02,493 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d7698e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:27:02, skipping insertion in model container [2019-10-22 11:27:02,493 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:27:01" (2/3) ... [2019-10-22 11:27:02,494 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d7698e2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:27:02, skipping insertion in model container [2019-10-22 11:27:02,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:27:02" (3/3) ... [2019-10-22 11:27:02,496 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product48.cil.c [2019-10-22 11:27:02,507 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:27:02,518 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-10-22 11:27:02,531 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-10-22 11:27:02,565 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:27:02,565 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:27:02,565 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:27:02,565 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:27:02,569 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:27:02,569 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:27:02,570 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:27:02,570 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:27:02,589 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states. [2019-10-22 11:27:02,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-22 11:27:02,600 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:27:02,601 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:27:02,604 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:27:02,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:27:02,611 INFO L82 PathProgramCache]: Analyzing trace with hash 325683581, now seen corresponding path program 1 times [2019-10-22 11:27:02,622 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:27:02,624 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [2045667049] [2019-10-22 11:27:02,625 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_44275414-4320-4936-ac48-bf0726b45670/bin/utaipan/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:27:02,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:27:02,832 INFO L256 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 1 conjunts are in the unsatisfiable core [2019-10-22 11:27:02,836 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:27:02,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:27:02,853 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:27:02,858 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:27:02,859 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2045667049] [2019-10-22 11:27:02,860 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:27:02,860 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-10-22 11:27:02,860 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869444423] [2019-10-22 11:27:02,865 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-22 11:27:02,865 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:27:02,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-22 11:27:02,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 11:27:02,883 INFO L87 Difference]: Start difference. First operand 131 states. Second operand 2 states. [2019-10-22 11:27:02,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:27:02,924 INFO L93 Difference]: Finished difference Result 256 states and 383 transitions. [2019-10-22 11:27:02,924 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 11:27:02,926 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2019-10-22 11:27:02,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:27:02,939 INFO L225 Difference]: With dead ends: 256 [2019-10-22 11:27:02,939 INFO L226 Difference]: Without dead ends: 127 [2019-10-22 11:27:02,942 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 11:27:02,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2019-10-22 11:27:02,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2019-10-22 11:27:02,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2019-10-22 11:27:02,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 183 transitions. [2019-10-22 11:27:02,988 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 183 transitions. Word has length 16 [2019-10-22 11:27:02,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:27:02,988 INFO L462 AbstractCegarLoop]: Abstraction has 127 states and 183 transitions. [2019-10-22 11:27:02,988 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-22 11:27:02,989 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 183 transitions. [2019-10-22 11:27:02,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-22 11:27:02,990 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:27:02,990 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:27:03,191 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:27:03,191 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:27:03,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:27:03,192 INFO L82 PathProgramCache]: Analyzing trace with hash 1302516555, now seen corresponding path program 1 times [2019-10-22 11:27:03,194 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:27:03,194 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [884756594] [2019-10-22 11:27:03,194 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_44275414-4320-4936-ac48-bf0726b45670/bin/utaipan/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:27:03,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:27:03,361 INFO L256 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 11:27:03,362 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:27:03,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:27:03,387 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:27:03,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:27:03,396 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [884756594] [2019-10-22 11:27:03,396 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:27:03,396 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2019-10-22 11:27:03,396 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965829229] [2019-10-22 11:27:03,398 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 11:27:03,398 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:27:03,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 11:27:03,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-22 11:27:03,399 INFO L87 Difference]: Start difference. First operand 127 states and 183 transitions. Second operand 4 states. [2019-10-22 11:27:03,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:27:03,528 INFO L93 Difference]: Finished difference Result 418 states and 606 transitions. [2019-10-22 11:27:03,530 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 11:27:03,530 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2019-10-22 11:27:03,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:27:03,533 INFO L225 Difference]: With dead ends: 418 [2019-10-22 11:27:03,533 INFO L226 Difference]: Without dead ends: 297 [2019-10-22 11:27:03,534 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-22 11:27:03,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2019-10-22 11:27:03,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 168. [2019-10-22 11:27:03,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2019-10-22 11:27:03,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 243 transitions. [2019-10-22 11:27:03,576 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 243 transitions. Word has length 17 [2019-10-22 11:27:03,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:27:03,576 INFO L462 AbstractCegarLoop]: Abstraction has 168 states and 243 transitions. [2019-10-22 11:27:03,576 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 11:27:03,577 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 243 transitions. [2019-10-22 11:27:03,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-10-22 11:27:03,581 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:27:03,583 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:27:03,783 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:27:03,784 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:27:03,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:27:03,784 INFO L82 PathProgramCache]: Analyzing trace with hash -619300951, now seen corresponding path program 1 times [2019-10-22 11:27:03,785 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:27:03,785 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1876344143] [2019-10-22 11:27:03,785 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_44275414-4320-4936-ac48-bf0726b45670/bin/utaipan/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:27:03,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:27:03,955 INFO L256 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 11:27:03,957 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:27:03,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:27:03,966 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:27:03,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:27:03,968 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1876344143] [2019-10-22 11:27:03,968 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:27:03,969 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-10-22 11:27:03,969 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12922074] [2019-10-22 11:27:03,970 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:27:03,970 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:27:03,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:27:03,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:27:03,971 INFO L87 Difference]: Start difference. First operand 168 states and 243 transitions. Second operand 3 states. [2019-10-22 11:27:04,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:27:04,149 INFO L93 Difference]: Finished difference Result 375 states and 539 transitions. [2019-10-22 11:27:04,149 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:27:04,149 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2019-10-22 11:27:04,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:27:04,151 INFO L225 Difference]: With dead ends: 375 [2019-10-22 11:27:04,151 INFO L226 Difference]: Without dead ends: 213 [2019-10-22 11:27:04,152 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:27:04,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2019-10-22 11:27:04,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 207. [2019-10-22 11:27:04,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2019-10-22 11:27:04,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 286 transitions. [2019-10-22 11:27:04,194 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 286 transitions. Word has length 19 [2019-10-22 11:27:04,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:27:04,195 INFO L462 AbstractCegarLoop]: Abstraction has 207 states and 286 transitions. [2019-10-22 11:27:04,195 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:27:04,195 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 286 transitions. [2019-10-22 11:27:04,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-10-22 11:27:04,196 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:27:04,196 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:27:04,397 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:27:04,398 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:27:04,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:27:04,398 INFO L82 PathProgramCache]: Analyzing trace with hash -1744683281, now seen corresponding path program 1 times [2019-10-22 11:27:04,399 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:27:04,399 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1777187374] [2019-10-22 11:27:04,399 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_44275414-4320-4936-ac48-bf0726b45670/bin/utaipan/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:27:04,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:27:04,560 INFO L256 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-22 11:27:04,561 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:27:04,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:27:04,604 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:27:04,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:27:04,652 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1777187374] [2019-10-22 11:27:04,652 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:27:04,652 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 8 [2019-10-22 11:27:04,652 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443544074] [2019-10-22 11:27:04,653 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-22 11:27:04,653 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:27:04,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-22 11:27:04,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2019-10-22 11:27:04,655 INFO L87 Difference]: Start difference. First operand 207 states and 286 transitions. Second operand 9 states. [2019-10-22 11:27:05,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:27:05,565 INFO L93 Difference]: Finished difference Result 1390 states and 1952 transitions. [2019-10-22 11:27:05,565 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-22 11:27:05,566 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2019-10-22 11:27:05,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:27:05,570 INFO L225 Difference]: With dead ends: 1390 [2019-10-22 11:27:05,570 INFO L226 Difference]: Without dead ends: 1189 [2019-10-22 11:27:05,572 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2019-10-22 11:27:05,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1189 states. [2019-10-22 11:27:05,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1189 to 513. [2019-10-22 11:27:05,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 513 states. [2019-10-22 11:27:05,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 687 transitions. [2019-10-22 11:27:05,627 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 687 transitions. Word has length 25 [2019-10-22 11:27:05,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:27:05,627 INFO L462 AbstractCegarLoop]: Abstraction has 513 states and 687 transitions. [2019-10-22 11:27:05,627 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-22 11:27:05,628 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 687 transitions. [2019-10-22 11:27:05,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2019-10-22 11:27:05,630 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:27:05,630 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:27:05,831 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:27:05,832 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:27:05,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:27:05,832 INFO L82 PathProgramCache]: Analyzing trace with hash 31993027, now seen corresponding path program 1 times [2019-10-22 11:27:05,833 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:27:05,833 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [796114311] [2019-10-22 11:27:05,833 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_44275414-4320-4936-ac48-bf0726b45670/bin/utaipan/cvc4 Starting monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:27:05,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:27:05,980 INFO L256 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-22 11:27:05,981 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:27:06,000 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-10-22 11:27:06,001 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:27:06,005 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-10-22 11:27:06,006 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [796114311] [2019-10-22 11:27:06,006 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:27:06,006 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-10-22 11:27:06,006 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308859984] [2019-10-22 11:27:06,007 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:27:06,007 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:27:06,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:27:06,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:27:06,007 INFO L87 Difference]: Start difference. First operand 513 states and 687 transitions. Second operand 5 states. [2019-10-22 11:27:06,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:27:06,382 INFO L93 Difference]: Finished difference Result 1205 states and 1637 transitions. [2019-10-22 11:27:06,383 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-22 11:27:06,383 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 41 [2019-10-22 11:27:06,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:27:06,387 INFO L225 Difference]: With dead ends: 1205 [2019-10-22 11:27:06,387 INFO L226 Difference]: Without dead ends: 1199 [2019-10-22 11:27:06,388 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-10-22 11:27:06,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1199 states. [2019-10-22 11:27:06,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1199 to 513. [2019-10-22 11:27:06,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 513 states. [2019-10-22 11:27:06,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 681 transitions. [2019-10-22 11:27:06,450 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 681 transitions. Word has length 41 [2019-10-22 11:27:06,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:27:06,450 INFO L462 AbstractCegarLoop]: Abstraction has 513 states and 681 transitions. [2019-10-22 11:27:06,450 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:27:06,451 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 681 transitions. [2019-10-22 11:27:06,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-10-22 11:27:06,452 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:27:06,453 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:27:06,656 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:27:06,657 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:27:06,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:27:06,657 INFO L82 PathProgramCache]: Analyzing trace with hash 1720169456, now seen corresponding path program 1 times [2019-10-22 11:27:06,658 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:27:06,665 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1730503305] [2019-10-22 11:27:06,665 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_44275414-4320-4936-ac48-bf0726b45670/bin/utaipan/cvc4 Starting monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:27:06,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:27:06,809 INFO L256 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-22 11:27:06,811 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:27:06,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:27:06,827 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:27:06,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:27:06,835 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1730503305] [2019-10-22 11:27:06,835 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:27:06,836 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-10-22 11:27:06,836 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250733430] [2019-10-22 11:27:06,837 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:27:06,838 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:27:06,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:27:06,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:27:06,843 INFO L87 Difference]: Start difference. First operand 513 states and 681 transitions. Second operand 5 states. [2019-10-22 11:27:07,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:27:07,063 INFO L93 Difference]: Finished difference Result 1508 states and 1965 transitions. [2019-10-22 11:27:07,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 11:27:07,064 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 43 [2019-10-22 11:27:07,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:27:07,068 INFO L225 Difference]: With dead ends: 1508 [2019-10-22 11:27:07,068 INFO L226 Difference]: Without dead ends: 1001 [2019-10-22 11:27:07,070 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-22 11:27:07,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1001 states. [2019-10-22 11:27:07,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1001 to 558. [2019-10-22 11:27:07,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 558 states. [2019-10-22 11:27:07,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 726 transitions. [2019-10-22 11:27:07,119 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 726 transitions. Word has length 43 [2019-10-22 11:27:07,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:27:07,121 INFO L462 AbstractCegarLoop]: Abstraction has 558 states and 726 transitions. [2019-10-22 11:27:07,121 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:27:07,121 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 726 transitions. [2019-10-22 11:27:07,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-10-22 11:27:07,125 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:27:07,125 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:27:07,326 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:27:07,326 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:27:07,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:27:07,326 INFO L82 PathProgramCache]: Analyzing trace with hash 1210696366, now seen corresponding path program 1 times [2019-10-22 11:27:07,327 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:27:07,327 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [113832928] [2019-10-22 11:27:07,327 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_44275414-4320-4936-ac48-bf0726b45670/bin/utaipan/cvc4 Starting monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:27:07,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:27:07,453 INFO L256 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-22 11:27:07,454 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:27:07,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:27:07,475 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:27:07,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:27:07,500 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [113832928] [2019-10-22 11:27:07,500 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:27:07,500 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-10-22 11:27:07,500 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80670451] [2019-10-22 11:27:07,501 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 11:27:07,502 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:27:07,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 11:27:07,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-22 11:27:07,503 INFO L87 Difference]: Start difference. First operand 558 states and 726 transitions. Second operand 6 states. [2019-10-22 11:27:07,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:27:07,697 INFO L93 Difference]: Finished difference Result 1388 states and 1788 transitions. [2019-10-22 11:27:07,698 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 11:27:07,698 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 43 [2019-10-22 11:27:07,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:27:07,701 INFO L225 Difference]: With dead ends: 1388 [2019-10-22 11:27:07,702 INFO L226 Difference]: Without dead ends: 765 [2019-10-22 11:27:07,703 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-22 11:27:07,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 765 states. [2019-10-22 11:27:07,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 765 to 435. [2019-10-22 11:27:07,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 435 states. [2019-10-22 11:27:07,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 562 transitions. [2019-10-22 11:27:07,760 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 562 transitions. Word has length 43 [2019-10-22 11:27:07,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:27:07,760 INFO L462 AbstractCegarLoop]: Abstraction has 435 states and 562 transitions. [2019-10-22 11:27:07,760 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 11:27:07,760 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 562 transitions. [2019-10-22 11:27:07,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2019-10-22 11:27:07,762 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:27:07,762 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:27:07,963 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:27:07,963 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:27:07,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:27:07,963 INFO L82 PathProgramCache]: Analyzing trace with hash -1085822275, now seen corresponding path program 1 times [2019-10-22 11:27:07,964 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:27:07,964 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1092996127] [2019-10-22 11:27:07,964 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_44275414-4320-4936-ac48-bf0726b45670/bin/utaipan/cvc4 Starting monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:27:08,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:27:08,113 INFO L256 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 11:27:08,115 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:27:08,125 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:27:08,126 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:27:08,131 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:27:08,132 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1092996127] [2019-10-22 11:27:08,132 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:27:08,132 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-10-22 11:27:08,132 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993951343] [2019-10-22 11:27:08,133 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:27:08,133 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:27:08,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:27:08,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:27:08,134 INFO L87 Difference]: Start difference. First operand 435 states and 562 transitions. Second operand 3 states. [2019-10-22 11:27:08,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:27:08,179 INFO L93 Difference]: Finished difference Result 435 states and 562 transitions. [2019-10-22 11:27:08,179 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:27:08,180 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 48 [2019-10-22 11:27:08,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:27:08,181 INFO L225 Difference]: With dead ends: 435 [2019-10-22 11:27:08,181 INFO L226 Difference]: Without dead ends: 211 [2019-10-22 11:27:08,181 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:27:08,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2019-10-22 11:27:08,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 211. [2019-10-22 11:27:08,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2019-10-22 11:27:08,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 282 transitions. [2019-10-22 11:27:08,201 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 282 transitions. Word has length 48 [2019-10-22 11:27:08,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:27:08,202 INFO L462 AbstractCegarLoop]: Abstraction has 211 states and 282 transitions. [2019-10-22 11:27:08,202 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:27:08,202 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 282 transitions. [2019-10-22 11:27:08,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-10-22 11:27:08,202 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:27:08,203 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:27:08,403 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:27:08,404 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:27:08,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:27:08,405 INFO L82 PathProgramCache]: Analyzing trace with hash 1687322796, now seen corresponding path program 1 times [2019-10-22 11:27:08,405 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:27:08,405 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1177270123] [2019-10-22 11:27:08,405 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_44275414-4320-4936-ac48-bf0726b45670/bin/utaipan/cvc4 Starting monitored process 10 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:27:08,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:27:08,539 INFO L256 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-22 11:27:08,541 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:27:08,578 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-22 11:27:08,578 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:27:08,624 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-22 11:27:08,624 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1177270123] [2019-10-22 11:27:08,624 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787011521] [2019-10-22 11:27:08,625 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_44275414-4320-4936-ac48-bf0726b45670/bin/utaipan/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:27:08,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:27:08,712 INFO L256 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-22 11:27:08,713 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:27:08,731 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-22 11:27:08,736 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:27:08,747 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-22 11:27:08,747 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-22 11:27:08,747 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5] total 9 [2019-10-22 11:27:08,748 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142803541] [2019-10-22 11:27:08,748 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-22 11:27:08,748 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:27:08,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-22 11:27:08,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-10-22 11:27:08,749 INFO L87 Difference]: Start difference. First operand 211 states and 282 transitions. Second operand 10 states. [2019-10-22 11:27:09,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:27:09,544 INFO L93 Difference]: Finished difference Result 1316 states and 1806 transitions. [2019-10-22 11:27:09,544 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-10-22 11:27:09,544 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 53 [2019-10-22 11:27:09,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:27:09,549 INFO L225 Difference]: With dead ends: 1316 [2019-10-22 11:27:09,549 INFO L226 Difference]: Without dead ends: 1153 [2019-10-22 11:27:09,550 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 199 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=198, Invalid=558, Unknown=0, NotChecked=0, Total=756 [2019-10-22 11:27:09,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1153 states. [2019-10-22 11:27:09,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1153 to 350. [2019-10-22 11:27:09,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 350 states. [2019-10-22 11:27:09,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 475 transitions. [2019-10-22 11:27:09,588 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 475 transitions. Word has length 53 [2019-10-22 11:27:09,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:27:09,588 INFO L462 AbstractCegarLoop]: Abstraction has 350 states and 475 transitions. [2019-10-22 11:27:09,588 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-22 11:27:09,588 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 475 transitions. [2019-10-22 11:27:09,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2019-10-22 11:27:09,589 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:27:09,589 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:27:09,990 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 cvc4 --incremental --print-success --lang smt --rewrite-divk,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:27:09,991 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:27:09,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:27:09,991 INFO L82 PathProgramCache]: Analyzing trace with hash 1211162538, now seen corresponding path program 2 times [2019-10-22 11:27:09,991 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:27:09,991 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [963208753] [2019-10-22 11:27:09,991 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_44275414-4320-4936-ac48-bf0726b45670/bin/utaipan/cvc4 Starting monitored process 12 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:27:11,723 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-10-22 11:27:11,723 INFO L250 tOrderPrioritization]: Conjunction of SSA is sat [2019-10-22 11:27:13,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 11:27:14,237 INFO L168 tionRefinementEngine]: Strategy WALRUS found a feasible trace [2019-10-22 11:27:14,237 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-22 11:27:14,438 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:27:14,566 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 11:27:14 BoogieIcfgContainer [2019-10-22 11:27:14,566 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 11:27:14,566 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 11:27:14,567 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 11:27:14,567 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 11:27:14,567 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:27:02" (3/4) ... [2019-10-22 11:27:14,572 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-10-22 11:27:14,723 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_44275414-4320-4936-ac48-bf0726b45670/bin/utaipan/witness.graphml [2019-10-22 11:27:14,723 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 11:27:14,725 INFO L168 Benchmark]: Toolchain (without parser) took 14022.30 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 307.8 MB). Free memory was 952.3 MB in the beginning and 952.8 MB in the end (delta: -522.9 kB). Peak memory consumption was 307.2 MB. Max. memory is 11.5 GB. [2019-10-22 11:27:14,725 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 977.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:27:14,725 INFO L168 Benchmark]: CACSL2BoogieTranslator took 582.78 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.3 MB). Free memory was 952.3 MB in the beginning and 1.1 GB in the end (delta: -152.6 MB). Peak memory consumption was 30.4 MB. Max. memory is 11.5 GB. [2019-10-22 11:27:14,726 INFO L168 Benchmark]: Boogie Procedure Inliner took 77.83 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: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. [2019-10-22 11:27:14,726 INFO L168 Benchmark]: Boogie Preprocessor took 49.40 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: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-10-22 11:27:14,726 INFO L168 Benchmark]: RCFGBuilder took 1073.08 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 73.8 MB). Peak memory consumption was 73.8 MB. Max. memory is 11.5 GB. [2019-10-22 11:27:14,726 INFO L168 Benchmark]: TraceAbstraction took 12077.99 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 183.5 MB). Free memory was 1.0 GB in the beginning and 980.4 MB in the end (delta: 42.3 MB). Peak memory consumption was 225.8 MB. Max. memory is 11.5 GB. [2019-10-22 11:27:14,726 INFO L168 Benchmark]: Witness Printer took 156.34 ms. Allocated memory is still 1.3 GB. Free memory was 980.4 MB in the beginning and 952.8 MB in the end (delta: 27.6 MB). Peak memory consumption was 27.6 MB. Max. memory is 11.5 GB. [2019-10-22 11:27:14,728 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 977.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 582.78 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.3 MB). Free memory was 952.3 MB in the beginning and 1.1 GB in the end (delta: -152.6 MB). Peak memory consumption was 30.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 77.83 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: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 49.40 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: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 1073.08 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 73.8 MB). Peak memory consumption was 73.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 12077.99 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 183.5 MB). Free memory was 1.0 GB in the beginning and 980.4 MB in the end (delta: 42.3 MB). Peak memory consumption was 225.8 MB. Max. memory is 11.5 GB. * Witness Printer took 156.34 ms. Allocated memory is still 1.3 GB. Free memory was 980.4 MB in the beginning and 952.8 MB in the end (delta: 27.6 MB). Peak memory consumption was 27.6 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 439]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L238] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L444] int cleanupTimeShifts = 4; [L556] int pumpRunning = 0; [L557] int systemActive = 1; [L774] int waterLevel = 1; [L775] int methaneLevelCritical = 0; [L525] int retValue_acc ; [L526] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L963] int retValue_acc ; [L966] retValue_acc = 1 [L967] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L532] tmp = valid_product() [L534] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L869] int splverifierCounter ; [L870] int tmp ; [L871] int tmp___0 ; [L872] int tmp___1 ; [L873] int tmp___2 ; [L876] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L878] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L880] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L886] tmp = __VERIFIER_nondet_int() [L888] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L792] COND TRUE waterLevel < 2 [L793] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L896] tmp___0 = __VERIFIER_nondet_int() [L898] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L906] tmp___2 = __VERIFIER_nondet_int() [L908] COND TRUE \read(tmp___2) [L769] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L563] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L570] COND TRUE \read(systemActive) [L618] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L621] COND FALSE !(\read(pumpRunning)) [L592] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L595] COND TRUE ! pumpRunning [L732] int retValue_acc ; [L733] int tmp ; [L734] int tmp___0 ; [L854] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L857] COND FALSE !(waterLevel < 2) [L861] retValue_acc = 0 [L862] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L738] tmp = isHighWaterSensorDry() [L740] COND FALSE !(\read(tmp)) [L743] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L745] retValue_acc = tmp___0 [L746] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L597] tmp = isHighWaterLevel() [L599] COND TRUE \read(tmp) [L651] int tmp ; [L676] int retValue_acc ; [L813] int retValue_acc ; [L816] retValue_acc = methaneLevelCritical [L817] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L680] retValue_acc = isMethaneLevelCritical() [L682] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L655] tmp = isMethaneAlarm() [L657] COND FALSE !(\read(tmp)) [L646] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L44] int tmp ; [L45] int tmp___0 ; [L845] int retValue_acc ; [L848] retValue_acc = waterLevel [L849] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L49] tmp = getWaterLevel() [L51] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L878] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L880] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L886] tmp = __VERIFIER_nondet_int() [L888] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L896] tmp___0 = __VERIFIER_nondet_int() [L898] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L906] tmp___2 = __VERIFIER_nondet_int() [L908] COND TRUE \read(tmp___2) [L769] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L563] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L780] COND TRUE waterLevel > 0 [L781] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L570] COND TRUE \read(systemActive) [L618] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L621] COND TRUE \read(pumpRunning) [L676] int retValue_acc ; [L813] int retValue_acc ; [L816] retValue_acc = methaneLevelCritical [L817] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L680] retValue_acc = isMethaneLevelCritical() [L682] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L623] tmp = isMethaneAlarm() [L625] COND FALSE !(\read(tmp)) [L592] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L595] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L44] int tmp ; [L45] int tmp___0 ; [L845] int retValue_acc ; [L848] retValue_acc = waterLevel [L849] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L49] tmp = getWaterLevel() [L51] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L878] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L880] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L886] tmp = __VERIFIER_nondet_int() [L888] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L896] tmp___0 = __VERIFIER_nondet_int() [L898] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L906] tmp___2 = __VERIFIER_nondet_int() [L908] COND TRUE \read(tmp___2) [L769] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L563] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L780] COND TRUE waterLevel > 0 [L781] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L570] COND TRUE \read(systemActive) [L618] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L621] COND TRUE \read(pumpRunning) [L676] int retValue_acc ; [L813] int retValue_acc ; [L816] retValue_acc = methaneLevelCritical [L817] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L680] retValue_acc = isMethaneLevelCritical() [L682] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L623] tmp = isMethaneAlarm() [L625] COND FALSE !(\read(tmp)) [L592] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L595] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L44] int tmp ; [L45] int tmp___0 ; [L845] int retValue_acc ; [L848] retValue_acc = waterLevel [L849] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L49] tmp = getWaterLevel() [L51] COND TRUE tmp == 0 [L687] int retValue_acc ; [L690] retValue_acc = pumpRunning [L691] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L53] tmp___0 = isPumpRunning() [L55] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L439] __VERIFIER_error() VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 131 locations, 3 error locations. Result: UNSAFE, OverallTime: 12.0s, OverallIterations: 10, TraceHistogramMax: 3, AutomataDifference: 2.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 1914 SDtfs, 4579 SDslu, 4640 SDs, 0 SdLazy, 804 SolverSat, 248 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 735 GetRequests, 672 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=558occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 9 MinimizatonAttempts, 3073 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 2.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 430 NumberOfCodeBlocks, 430 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 696 ConstructedInterpolants, 0 QuantifiedInterpolants, 68912 SizeOfPredicates, 26 NumberOfNonLiveVariables, 2027 ConjunctsInSsa, 44 ConjunctsInUnsatCore, 20 InterpolantComputations, 16 PerfectInterpolantSequences, 54/90 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...