./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product40.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_80a39eb2-68e0-42ac-9215-49ebe96b1cfc/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_80a39eb2-68e0-42ac-9215-49ebe96b1cfc/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_80a39eb2-68e0-42ac-9215-49ebe96b1cfc/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_80a39eb2-68e0-42ac-9215-49ebe96b1cfc/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product40.cil.c -s /tmp/vcloud-vcloud-master/worker/working_dir_80a39eb2-68e0-42ac-9215-49ebe96b1cfc/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_80a39eb2-68e0-42ac-9215-49ebe96b1cfc/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 a7dbd4e152ee971b4407c7068d06d15a4635d510 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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_80a39eb2-68e0-42ac-9215-49ebe96b1cfc/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_80a39eb2-68e0-42ac-9215-49ebe96b1cfc/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_80a39eb2-68e0-42ac-9215-49ebe96b1cfc/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_80a39eb2-68e0-42ac-9215-49ebe96b1cfc/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product40.cil.c -s /tmp/vcloud-vcloud-master/worker/working_dir_80a39eb2-68e0-42ac-9215-49ebe96b1cfc/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_80a39eb2-68e0-42ac-9215-49ebe96b1cfc/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 a7dbd4e152ee971b4407c7068d06d15a4635d510 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 11:23:31,617 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:23:31,618 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:23:31,630 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:23:31,631 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:23:31,632 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:23:31,634 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:23:31,636 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:23:31,639 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:23:31,640 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:23:31,643 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:23:31,644 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:23:31,653 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:23:31,654 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:23:31,655 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:23:31,656 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:23:31,657 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:23:31,657 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:23:31,659 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:23:31,660 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:23:31,661 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:23:31,662 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:23:31,662 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:23:31,663 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:23:31,669 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:23:31,669 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:23:31,669 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:23:31,670 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:23:31,670 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:23:31,671 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:23:31,673 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:23:31,674 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:23:31,674 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:23:31,675 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:23:31,676 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:23:31,678 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:23:31,679 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:23:31,679 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:23:31,679 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:23:31,680 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:23:31,680 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:23:31,681 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_80a39eb2-68e0-42ac-9215-49ebe96b1cfc/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-10-22 11:23:31,704 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:23:31,707 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:23:31,709 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:23:31,709 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:23:31,709 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:23:31,709 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:23:31,710 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-10-22 11:23:31,710 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:23:31,710 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:23:31,710 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-10-22 11:23:31,710 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-10-22 11:23:31,710 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:23:31,711 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:23:31,711 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:23:31,711 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 11:23:31,712 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:23:31,712 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:23:31,712 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:23:31,712 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:23:31,712 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:23:31,712 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:23:31,712 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:23:31,713 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:23:31,713 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:23:31,713 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:23:31,713 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:23:31,713 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:23:31,713 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:23:31,714 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:23:31,714 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:23:31,714 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:23:31,714 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-22 11:23:31,714 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 11:23:31,714 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:23:31,715 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:23:31,717 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_80a39eb2-68e0-42ac-9215-49ebe96b1cfc/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 -> a7dbd4e152ee971b4407c7068d06d15a4635d510 [2019-10-22 11:23:31,751 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:23:31,763 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:23:31,767 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:23:31,769 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:23:31,770 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:23:31,770 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_80a39eb2-68e0-42ac-9215-49ebe96b1cfc/bin/utaipan/../../sv-benchmarks/c/product-lines/minepump_spec4_product40.cil.c [2019-10-22 11:23:31,817 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_80a39eb2-68e0-42ac-9215-49ebe96b1cfc/bin/utaipan/data/c356b3918/7fad9f4616694d22844df67f86ed424a/FLAG7e63e443e [2019-10-22 11:23:32,247 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:23:32,248 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_80a39eb2-68e0-42ac-9215-49ebe96b1cfc/sv-benchmarks/c/product-lines/minepump_spec4_product40.cil.c [2019-10-22 11:23:32,258 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_80a39eb2-68e0-42ac-9215-49ebe96b1cfc/bin/utaipan/data/c356b3918/7fad9f4616694d22844df67f86ed424a/FLAG7e63e443e [2019-10-22 11:23:32,269 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_80a39eb2-68e0-42ac-9215-49ebe96b1cfc/bin/utaipan/data/c356b3918/7fad9f4616694d22844df67f86ed424a [2019-10-22 11:23:32,271 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:23:32,272 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:23:32,273 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:23:32,274 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:23:32,276 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:23:32,277 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:23:32" (1/1) ... [2019-10-22 11:23:32,278 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@70c9b81f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:32, skipping insertion in model container [2019-10-22 11:23:32,279 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:23:32" (1/1) ... [2019-10-22 11:23:32,285 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:23:32,327 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:23:32,712 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:23:32,724 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:23:32,798 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:23:32,827 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:23:32,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:32 WrapperNode [2019-10-22 11:23:32,827 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:23:32,828 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:23:32,828 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:23:32,828 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:23:32,837 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:32" (1/1) ... [2019-10-22 11:23:32,855 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:32" (1/1) ... [2019-10-22 11:23:32,902 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:23:32,903 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:23:32,903 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:23:32,903 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:23:32,912 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:32" (1/1) ... [2019-10-22 11:23:32,913 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:32" (1/1) ... [2019-10-22 11:23:32,917 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:32" (1/1) ... [2019-10-22 11:23:32,917 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:32" (1/1) ... [2019-10-22 11:23:32,927 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:32" (1/1) ... [2019-10-22 11:23:32,933 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:32" (1/1) ... [2019-10-22 11:23:32,936 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:32" (1/1) ... [2019-10-22 11:23:32,941 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:23:32,942 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:23:32,942 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:23:32,942 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:23:32,943 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:32" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_80a39eb2-68e0-42ac-9215-49ebe96b1cfc/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 11:23:32,998 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 11:23:32,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-22 11:23:32,998 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:23:32,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:23:33,764 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:23:33,764 INFO L284 CfgBuilder]: Removed 162 assume(true) statements. [2019-10-22 11:23:33,766 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:23:33 BoogieIcfgContainer [2019-10-22 11:23:33,766 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:23:33,767 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:23:33,767 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:23:33,770 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:23:33,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:23:32" (1/3) ... [2019-10-22 11:23:33,772 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bdc2eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:23:33, skipping insertion in model container [2019-10-22 11:23:33,772 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:32" (2/3) ... [2019-10-22 11:23:33,772 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bdc2eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:23:33, skipping insertion in model container [2019-10-22 11:23:33,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:23:33" (3/3) ... [2019-10-22 11:23:33,774 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product40.cil.c [2019-10-22 11:23:33,784 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:23:33,794 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-10-22 11:23:33,808 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-10-22 11:23:33,850 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:23:33,851 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:23:33,851 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:23:33,852 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:23:33,852 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:23:33,852 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:23:33,852 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:23:33,852 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:23:33,875 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states. [2019-10-22 11:23:33,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-22 11:23:33,883 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:23:33,884 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:23:33,886 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:23:33,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:23:33,893 INFO L82 PathProgramCache]: Analyzing trace with hash 2074315904, now seen corresponding path program 1 times [2019-10-22 11:23:33,902 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:23:33,902 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266620010] [2019-10-22 11:23:33,902 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:33,903 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:33,905 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:23:34,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:23:34,188 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 11:23:34,189 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266620010] [2019-10-22 11:23:34,189 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:23:34,189 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 11:23:34,190 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344079399] [2019-10-22 11:23:34,194 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-22 11:23:34,195 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:23:34,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-22 11:23:34,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 11:23:34,212 INFO L87 Difference]: Start difference. First operand 113 states. Second operand 2 states. [2019-10-22 11:23:34,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:23:34,241 INFO L93 Difference]: Finished difference Result 220 states and 335 transitions. [2019-10-22 11:23:34,241 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 11:23:34,242 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2019-10-22 11:23:34,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:23:34,254 INFO L225 Difference]: With dead ends: 220 [2019-10-22 11:23:34,254 INFO L226 Difference]: Without dead ends: 109 [2019-10-22 11:23:34,257 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 11:23:34,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2019-10-22 11:23:34,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2019-10-22 11:23:34,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2019-10-22 11:23:34,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 159 transitions. [2019-10-22 11:23:34,301 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 159 transitions. Word has length 16 [2019-10-22 11:23:34,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:23:34,302 INFO L462 AbstractCegarLoop]: Abstraction has 109 states and 159 transitions. [2019-10-22 11:23:34,302 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-22 11:23:34,302 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 159 transitions. [2019-10-22 11:23:34,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-22 11:23:34,303 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:23:34,303 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 11:23:34,304 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:23:34,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:23:34,304 INFO L82 PathProgramCache]: Analyzing trace with hash 1027559007, now seen corresponding path program 1 times [2019-10-22 11:23:34,304 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:23:34,304 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518799503] [2019-10-22 11:23:34,305 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:34,305 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:34,305 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:23:34,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:23:34,429 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 11:23:34,430 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518799503] [2019-10-22 11:23:34,430 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:23:34,430 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 11:23:34,430 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647086202] [2019-10-22 11:23:34,432 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:23:34,432 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:23:34,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:23:34,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:23:34,433 INFO L87 Difference]: Start difference. First operand 109 states and 159 transitions. Second operand 3 states. [2019-10-22 11:23:34,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:23:34,450 INFO L93 Difference]: Finished difference Result 109 states and 159 transitions. [2019-10-22 11:23:34,455 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:23:34,455 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2019-10-22 11:23:34,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:23:34,456 INFO L225 Difference]: With dead ends: 109 [2019-10-22 11:23:34,456 INFO L226 Difference]: Without dead ends: 47 [2019-10-22 11:23:34,457 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 11:23:34,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-10-22 11:23:34,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2019-10-22 11:23:34,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2019-10-22 11:23:34,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 68 transitions. [2019-10-22 11:23:34,465 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 68 transitions. Word has length 17 [2019-10-22 11:23:34,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:23:34,465 INFO L462 AbstractCegarLoop]: Abstraction has 47 states and 68 transitions. [2019-10-22 11:23:34,465 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:23:34,466 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 68 transitions. [2019-10-22 11:23:34,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-10-22 11:23:34,466 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:23:34,466 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 11:23:34,467 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:23:34,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:23:34,470 INFO L82 PathProgramCache]: Analyzing trace with hash 109011716, now seen corresponding path program 1 times [2019-10-22 11:23:34,470 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:23:34,470 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158261944] [2019-10-22 11:23:34,470 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:34,470 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:34,471 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:23:34,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:23:34,580 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 11:23:34,581 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158261944] [2019-10-22 11:23:34,581 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:23:34,581 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 11:23:34,581 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586819554] [2019-10-22 11:23:34,582 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:23:34,582 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:23:34,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:23:34,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:23:34,583 INFO L87 Difference]: Start difference. First operand 47 states and 68 transitions. Second operand 5 states. [2019-10-22 11:23:34,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:23:34,651 INFO L93 Difference]: Finished difference Result 111 states and 164 transitions. [2019-10-22 11:23:34,652 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 11:23:34,652 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2019-10-22 11:23:34,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:23:34,653 INFO L225 Difference]: With dead ends: 111 [2019-10-22 11:23:34,653 INFO L226 Difference]: Without dead ends: 70 [2019-10-22 11:23:34,653 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 11:23:34,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2019-10-22 11:23:34,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 66. [2019-10-22 11:23:34,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2019-10-22 11:23:34,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 97 transitions. [2019-10-22 11:23:34,663 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 97 transitions. Word has length 22 [2019-10-22 11:23:34,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:23:34,663 INFO L462 AbstractCegarLoop]: Abstraction has 66 states and 97 transitions. [2019-10-22 11:23:34,663 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:23:34,663 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 97 transitions. [2019-10-22 11:23:34,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-10-22 11:23:34,664 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:23:34,664 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 11:23:34,664 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:23:34,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:23:34,665 INFO L82 PathProgramCache]: Analyzing trace with hash 60563277, now seen corresponding path program 1 times [2019-10-22 11:23:34,665 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:23:34,665 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029538296] [2019-10-22 11:23:34,665 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:34,665 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:34,666 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:23:34,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:23:34,744 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 11:23:34,745 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029538296] [2019-10-22 11:23:34,745 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:23:34,745 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 11:23:34,745 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651627121] [2019-10-22 11:23:34,745 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:23:34,746 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:23:34,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:23:34,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:23:34,746 INFO L87 Difference]: Start difference. First operand 66 states and 97 transitions. Second operand 3 states. [2019-10-22 11:23:34,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:23:34,794 INFO L93 Difference]: Finished difference Result 147 states and 218 transitions. [2019-10-22 11:23:34,795 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:23:34,795 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2019-10-22 11:23:34,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:23:34,796 INFO L225 Difference]: With dead ends: 147 [2019-10-22 11:23:34,796 INFO L226 Difference]: Without dead ends: 87 [2019-10-22 11:23:34,796 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 11:23:34,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2019-10-22 11:23:34,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 85. [2019-10-22 11:23:34,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2019-10-22 11:23:34,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 121 transitions. [2019-10-22 11:23:34,807 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 121 transitions. Word has length 24 [2019-10-22 11:23:34,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:23:34,807 INFO L462 AbstractCegarLoop]: Abstraction has 85 states and 121 transitions. [2019-10-22 11:23:34,807 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:23:34,808 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 121 transitions. [2019-10-22 11:23:34,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-10-22 11:23:34,808 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:23:34,808 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 11:23:34,809 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:23:34,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:23:34,809 INFO L82 PathProgramCache]: Analyzing trace with hash -445763815, now seen corresponding path program 1 times [2019-10-22 11:23:34,809 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:23:34,809 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1571487676] [2019-10-22 11:23:34,809 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:34,810 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:34,810 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:23:34,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:23:34,912 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 11:23:34,913 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1571487676] [2019-10-22 11:23:34,913 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:23:34,913 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-22 11:23:34,913 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43942057] [2019-10-22 11:23:34,913 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-22 11:23:34,913 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:23:34,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 11:23:34,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-22 11:23:34,914 INFO L87 Difference]: Start difference. First operand 85 states and 121 transitions. Second operand 8 states. [2019-10-22 11:23:35,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:23:35,226 INFO L93 Difference]: Finished difference Result 537 states and 787 transitions. [2019-10-22 11:23:35,226 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-22 11:23:35,226 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2019-10-22 11:23:35,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:23:35,229 INFO L225 Difference]: With dead ends: 537 [2019-10-22 11:23:35,229 INFO L226 Difference]: Without dead ends: 458 [2019-10-22 11:23:35,230 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 11:23:35,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2019-10-22 11:23:35,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 212. [2019-10-22 11:23:35,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2019-10-22 11:23:35,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 296 transitions. [2019-10-22 11:23:35,286 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 296 transitions. Word has length 25 [2019-10-22 11:23:35,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:23:35,286 INFO L462 AbstractCegarLoop]: Abstraction has 212 states and 296 transitions. [2019-10-22 11:23:35,286 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-22 11:23:35,287 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 296 transitions. [2019-10-22 11:23:35,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2019-10-22 11:23:35,288 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:23:35,288 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 11:23:35,289 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:23:35,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:23:35,289 INFO L82 PathProgramCache]: Analyzing trace with hash 371468141, now seen corresponding path program 1 times [2019-10-22 11:23:35,289 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:23:35,289 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424404413] [2019-10-22 11:23:35,290 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:35,290 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:35,290 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:23:35,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:23:35,382 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 11:23:35,382 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424404413] [2019-10-22 11:23:35,383 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:23:35,384 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 11:23:35,385 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495001388] [2019-10-22 11:23:35,385 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:23:35,385 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:23:35,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:23:35,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:23:35,386 INFO L87 Difference]: Start difference. First operand 212 states and 296 transitions. Second operand 5 states. [2019-10-22 11:23:35,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:23:35,539 INFO L93 Difference]: Finished difference Result 498 states and 707 transitions. [2019-10-22 11:23:35,543 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-22 11:23:35,543 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 41 [2019-10-22 11:23:35,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:23:35,545 INFO L225 Difference]: With dead ends: 498 [2019-10-22 11:23:35,546 INFO L226 Difference]: Without dead ends: 496 [2019-10-22 11:23:35,546 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 11:23:35,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2019-10-22 11:23:35,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 212. [2019-10-22 11:23:35,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2019-10-22 11:23:35,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 294 transitions. [2019-10-22 11:23:35,578 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 294 transitions. Word has length 41 [2019-10-22 11:23:35,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:23:35,578 INFO L462 AbstractCegarLoop]: Abstraction has 212 states and 294 transitions. [2019-10-22 11:23:35,578 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:23:35,578 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 294 transitions. [2019-10-22 11:23:35,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2019-10-22 11:23:35,580 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:23:35,580 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] [2019-10-22 11:23:35,580 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:23:35,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:23:35,581 INFO L82 PathProgramCache]: Analyzing trace with hash 1694698835, now seen corresponding path program 1 times [2019-10-22 11:23:35,581 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:23:35,581 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579574244] [2019-10-22 11:23:35,581 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:35,581 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:35,581 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:23:35,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:23:35,633 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 11:23:35,633 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579574244] [2019-10-22 11:23:35,633 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:23:35,633 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 11:23:35,633 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230823231] [2019-10-22 11:23:35,634 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:23:35,634 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:23:35,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:23:35,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:23:35,634 INFO L87 Difference]: Start difference. First operand 212 states and 294 transitions. Second operand 5 states. [2019-10-22 11:23:35,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:23:35,729 INFO L93 Difference]: Finished difference Result 647 states and 890 transitions. [2019-10-22 11:23:35,729 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 11:23:35,729 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 48 [2019-10-22 11:23:35,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:23:35,731 INFO L225 Difference]: With dead ends: 647 [2019-10-22 11:23:35,731 INFO L226 Difference]: Without dead ends: 441 [2019-10-22 11:23:35,732 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 11:23:35,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 441 states. [2019-10-22 11:23:35,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 441 to 227. [2019-10-22 11:23:35,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2019-10-22 11:23:35,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 309 transitions. [2019-10-22 11:23:35,757 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 309 transitions. Word has length 48 [2019-10-22 11:23:35,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:23:35,757 INFO L462 AbstractCegarLoop]: Abstraction has 227 states and 309 transitions. [2019-10-22 11:23:35,757 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:23:35,757 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 309 transitions. [2019-10-22 11:23:35,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2019-10-22 11:23:35,759 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:23:35,760 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] [2019-10-22 11:23:35,760 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:23:35,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:23:35,760 INFO L82 PathProgramCache]: Analyzing trace with hash 1301671825, now seen corresponding path program 1 times [2019-10-22 11:23:35,760 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:23:35,761 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197681073] [2019-10-22 11:23:35,761 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:35,761 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:35,761 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:23:35,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:23:35,844 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 11:23:35,845 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197681073] [2019-10-22 11:23:35,845 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:23:35,845 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-22 11:23:35,845 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254952034] [2019-10-22 11:23:35,846 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 11:23:35,846 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:23:35,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 11:23:35,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-22 11:23:35,847 INFO L87 Difference]: Start difference. First operand 227 states and 309 transitions. Second operand 6 states. [2019-10-22 11:23:35,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:23:35,982 INFO L93 Difference]: Finished difference Result 604 states and 821 transitions. [2019-10-22 11:23:35,983 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-22 11:23:35,983 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 48 [2019-10-22 11:23:35,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:23:35,987 INFO L225 Difference]: With dead ends: 604 [2019-10-22 11:23:35,987 INFO L226 Difference]: Without dead ends: 383 [2019-10-22 11:23:36,009 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2019-10-22 11:23:36,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2019-10-22 11:23:36,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 205. [2019-10-22 11:23:36,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2019-10-22 11:23:36,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 274 transitions. [2019-10-22 11:23:36,045 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 274 transitions. Word has length 48 [2019-10-22 11:23:36,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:23:36,045 INFO L462 AbstractCegarLoop]: Abstraction has 205 states and 274 transitions. [2019-10-22 11:23:36,046 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 11:23:36,046 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 274 transitions. [2019-10-22 11:23:36,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2019-10-22 11:23:36,050 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:23:36,051 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] [2019-10-22 11:23:36,051 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:23:36,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:23:36,051 INFO L82 PathProgramCache]: Analyzing trace with hash -103400707, now seen corresponding path program 1 times [2019-10-22 11:23:36,051 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:23:36,052 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594016165] [2019-10-22 11:23:36,052 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:36,052 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:23:36,052 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:23:36,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:23:36,139 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 11:23:36,139 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594016165] [2019-10-22 11:23:36,140 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1515031568] [2019-10-22 11:23:36,140 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_80a39eb2-68e0-42ac-9215-49ebe96b1cfc/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 11:23:36,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:23:36,265 INFO L256 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-22 11:23:36,270 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:23:36,319 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 11:23:36,319 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:23:36,349 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 11:23:36,349 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [668017786] [2019-10-22 11:23:36,357 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 51 [2019-10-22 11:23:36,402 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2019-10-22 11:23:36,402 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-22 11:23:36,854 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:23:36,855 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 11:23:36,861 INFO L168 Benchmark]: Toolchain (without parser) took 4586.50 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 238.0 MB). Free memory was 941.8 MB in the beginning and 1.1 GB in the end (delta: -188.6 MB). Peak memory consumption was 49.5 MB. Max. memory is 11.5 GB. [2019-10-22 11:23:36,861 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 960.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:23:36,862 INFO L168 Benchmark]: CACSL2BoogieTranslator took 554.41 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 168.8 MB). Free memory was 940.4 MB in the beginning and 1.2 GB in the end (delta: -210.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 11.5 GB. [2019-10-22 11:23:36,862 INFO L168 Benchmark]: Boogie Procedure Inliner took 74.27 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 11.5 GB. [2019-10-22 11:23:36,862 INFO L168 Benchmark]: Boogie Preprocessor took 39.03 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: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 11.5 GB. [2019-10-22 11:23:36,863 INFO L168 Benchmark]: RCFGBuilder took 824.03 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: 71.1 MB). Peak memory consumption was 71.1 MB. Max. memory is 11.5 GB. [2019-10-22 11:23:36,864 INFO L168 Benchmark]: TraceAbstraction took 3090.59 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 69.2 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -57.8 MB). Peak memory consumption was 11.4 MB. Max. memory is 11.5 GB. [2019-10-22 11:23:36,866 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 960.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 554.41 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 168.8 MB). Free memory was 940.4 MB in the beginning and 1.2 GB in the end (delta: -210.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 74.27 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 39.03 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: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 11.5 GB. * RCFGBuilder took 824.03 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: 71.1 MB). Peak memory consumption was 71.1 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3090.59 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 69.2 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -57.8 MB). Peak memory consumption was 11.4 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 11:23:39,002 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:23:39,004 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:23:39,015 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:23:39,016 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:23:39,017 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:23:39,018 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:23:39,020 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:23:39,022 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:23:39,022 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:23:39,023 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:23:39,024 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:23:39,025 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:23:39,025 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:23:39,026 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:23:39,028 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:23:39,028 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:23:39,029 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:23:39,031 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:23:39,033 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:23:39,034 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:23:39,035 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:23:39,036 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:23:39,037 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:23:39,039 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:23:39,040 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:23:39,040 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:23:39,041 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:23:39,041 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:23:39,042 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:23:39,042 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:23:39,043 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:23:39,044 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:23:39,044 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:23:39,045 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:23:39,045 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:23:39,046 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:23:39,046 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:23:39,046 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:23:39,047 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:23:39,048 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:23:39,049 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_80a39eb2-68e0-42ac-9215-49ebe96b1cfc/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2019-10-22 11:23:39,061 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:23:39,061 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:23:39,062 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:23:39,062 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:23:39,062 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:23:39,062 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:23:39,062 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:23:39,063 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:23:39,063 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:23:39,064 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:23:39,064 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:23:39,064 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:23:39,064 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:23:39,064 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:23:39,064 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:23:39,065 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:23:39,065 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-10-22 11:23:39,065 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-10-22 11:23:39,065 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:23:39,065 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:23:39,065 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 11:23:39,065 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:23:39,066 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:23:39,066 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:23:39,066 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:23:39,066 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:23:39,066 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:23:39,066 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:23:39,067 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:23:39,067 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:23:39,067 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-10-22 11:23:39,068 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-10-22 11:23:39,068 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:23:39,068 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:23:39,068 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_80a39eb2-68e0-42ac-9215-49ebe96b1cfc/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 -> a7dbd4e152ee971b4407c7068d06d15a4635d510 [2019-10-22 11:23:39,095 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:23:39,105 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:23:39,108 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:23:39,110 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:23:39,110 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:23:39,111 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_80a39eb2-68e0-42ac-9215-49ebe96b1cfc/bin/utaipan/../../sv-benchmarks/c/product-lines/minepump_spec4_product40.cil.c [2019-10-22 11:23:39,156 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_80a39eb2-68e0-42ac-9215-49ebe96b1cfc/bin/utaipan/data/ef0300d71/165164ed21384347944907b1cb02a962/FLAGc41c503a0 [2019-10-22 11:23:39,582 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:23:39,583 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_80a39eb2-68e0-42ac-9215-49ebe96b1cfc/sv-benchmarks/c/product-lines/minepump_spec4_product40.cil.c [2019-10-22 11:23:39,593 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_80a39eb2-68e0-42ac-9215-49ebe96b1cfc/bin/utaipan/data/ef0300d71/165164ed21384347944907b1cb02a962/FLAGc41c503a0 [2019-10-22 11:23:39,908 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_80a39eb2-68e0-42ac-9215-49ebe96b1cfc/bin/utaipan/data/ef0300d71/165164ed21384347944907b1cb02a962 [2019-10-22 11:23:39,910 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:23:39,911 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:23:39,912 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:23:39,912 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:23:39,916 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:23:39,917 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:23:39" (1/1) ... [2019-10-22 11:23:39,920 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64fff581 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:39, skipping insertion in model container [2019-10-22 11:23:39,920 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:23:39" (1/1) ... [2019-10-22 11:23:39,927 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:23:39,979 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:23:40,426 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:23:40,443 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:23:40,560 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:23:40,597 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:23:40,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:40 WrapperNode [2019-10-22 11:23:40,598 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:23:40,599 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:23:40,599 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:23:40,599 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:23:40,608 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:40" (1/1) ... [2019-10-22 11:23:40,626 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:40" (1/1) ... [2019-10-22 11:23:40,665 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:23:40,666 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:23:40,666 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:23:40,666 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:23:40,675 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:40" (1/1) ... [2019-10-22 11:23:40,676 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:40" (1/1) ... [2019-10-22 11:23:40,680 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:40" (1/1) ... [2019-10-22 11:23:40,680 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:40" (1/1) ... [2019-10-22 11:23:40,691 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:40" (1/1) ... [2019-10-22 11:23:40,699 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:40" (1/1) ... [2019-10-22 11:23:40,702 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:40" (1/1) ... [2019-10-22 11:23:40,706 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:23:40,706 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:23:40,707 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:23:40,707 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:23:40,720 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:40" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_80a39eb2-68e0-42ac-9215-49ebe96b1cfc/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 11:23:40,771 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 11:23:40,771 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2019-10-22 11:23:40,771 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:23:40,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:23:41,693 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:23:41,694 INFO L284 CfgBuilder]: Removed 162 assume(true) statements. [2019-10-22 11:23:41,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:23:41 BoogieIcfgContainer [2019-10-22 11:23:41,695 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:23:41,696 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:23:41,696 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:23:41,700 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:23:41,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:23:39" (1/3) ... [2019-10-22 11:23:41,701 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@573bd7f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:23:41, skipping insertion in model container [2019-10-22 11:23:41,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:23:40" (2/3) ... [2019-10-22 11:23:41,701 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@573bd7f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:23:41, skipping insertion in model container [2019-10-22 11:23:41,702 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:23:41" (3/3) ... [2019-10-22 11:23:41,703 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product40.cil.c [2019-10-22 11:23:41,717 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:23:41,727 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-10-22 11:23:41,738 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-10-22 11:23:41,770 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:23:41,770 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:23:41,771 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:23:41,771 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:23:41,772 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:23:41,772 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:23:41,772 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:23:41,772 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:23:41,789 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states. [2019-10-22 11:23:41,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-22 11:23:41,796 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:23:41,797 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:23:41,799 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:23:41,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:23:41,804 INFO L82 PathProgramCache]: Analyzing trace with hash 2074315904, now seen corresponding path program 1 times [2019-10-22 11:23:41,816 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:23:41,817 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [339788346] [2019-10-22 11:23:41,817 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_80a39eb2-68e0-42ac-9215-49ebe96b1cfc/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 11:23:41,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:23:41,985 INFO L256 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 1 conjunts are in the unsatisfiable core [2019-10-22 11:23:41,990 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:23:42,003 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 11:23:42,004 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:23:42,008 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 11:23:42,009 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [339788346] [2019-10-22 11:23:42,010 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:23:42,010 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-10-22 11:23:42,010 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092824965] [2019-10-22 11:23:42,014 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-22 11:23:42,014 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:23:42,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-22 11:23:42,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 11:23:42,028 INFO L87 Difference]: Start difference. First operand 113 states. Second operand 2 states. [2019-10-22 11:23:42,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:23:42,058 INFO L93 Difference]: Finished difference Result 220 states and 335 transitions. [2019-10-22 11:23:42,059 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 11:23:42,060 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2019-10-22 11:23:42,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:23:42,070 INFO L225 Difference]: With dead ends: 220 [2019-10-22 11:23:42,071 INFO L226 Difference]: Without dead ends: 109 [2019-10-22 11:23:42,074 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 11:23:42,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2019-10-22 11:23:42,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2019-10-22 11:23:42,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2019-10-22 11:23:42,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 159 transitions. [2019-10-22 11:23:42,114 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 159 transitions. Word has length 16 [2019-10-22 11:23:42,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:23:42,115 INFO L462 AbstractCegarLoop]: Abstraction has 109 states and 159 transitions. [2019-10-22 11:23:42,115 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-22 11:23:42,115 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 159 transitions. [2019-10-22 11:23:42,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-22 11:23:42,116 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:23:42,116 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 11:23:42,317 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:23:42,317 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:23:42,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:23:42,318 INFO L82 PathProgramCache]: Analyzing trace with hash 1027559007, now seen corresponding path program 1 times [2019-10-22 11:23:42,319 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:23:42,319 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [2022653532] [2019-10-22 11:23:42,319 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_80a39eb2-68e0-42ac-9215-49ebe96b1cfc/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 11:23:42,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:23:42,474 INFO L256 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 11:23:42,475 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:23:42,501 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 11:23:42,503 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:23:42,517 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 11:23:42,517 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2022653532] [2019-10-22 11:23:42,517 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:23:42,517 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2019-10-22 11:23:42,517 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055811157] [2019-10-22 11:23:42,522 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 11:23:42,522 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:23:42,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 11:23:42,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-22 11:23:42,523 INFO L87 Difference]: Start difference. First operand 109 states and 159 transitions. Second operand 4 states. [2019-10-22 11:23:42,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:23:42,602 INFO L93 Difference]: Finished difference Result 364 states and 534 transitions. [2019-10-22 11:23:42,603 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 11:23:42,603 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2019-10-22 11:23:42,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:23:42,605 INFO L225 Difference]: With dead ends: 364 [2019-10-22 11:23:42,605 INFO L226 Difference]: Without dead ends: 261 [2019-10-22 11:23:42,606 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 11:23:42,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2019-10-22 11:23:42,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 150. [2019-10-22 11:23:42,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2019-10-22 11:23:42,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 219 transitions. [2019-10-22 11:23:42,634 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 219 transitions. Word has length 17 [2019-10-22 11:23:42,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:23:42,635 INFO L462 AbstractCegarLoop]: Abstraction has 150 states and 219 transitions. [2019-10-22 11:23:42,635 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 11:23:42,635 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 219 transitions. [2019-10-22 11:23:42,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-10-22 11:23:42,636 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:23:42,636 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 11:23:42,837 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:23:42,837 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:23:42,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:23:42,837 INFO L82 PathProgramCache]: Analyzing trace with hash -1978748952, now seen corresponding path program 1 times [2019-10-22 11:23:42,838 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:23:42,838 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1787075425] [2019-10-22 11:23:42,838 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_80a39eb2-68e0-42ac-9215-49ebe96b1cfc/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 11:23:42,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:23:42,973 INFO L256 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 11:23:42,974 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:23:42,980 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 11:23:42,980 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:23:42,982 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 11:23:42,982 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1787075425] [2019-10-22 11:23:42,982 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:23:42,983 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-10-22 11:23:42,983 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85197461] [2019-10-22 11:23:42,983 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:23:42,984 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:23:42,984 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:23:42,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:23:42,984 INFO L87 Difference]: Start difference. First operand 150 states and 219 transitions. Second operand 3 states. [2019-10-22 11:23:43,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:23:43,121 INFO L93 Difference]: Finished difference Result 339 states and 491 transitions. [2019-10-22 11:23:43,122 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:23:43,122 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2019-10-22 11:23:43,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:23:43,124 INFO L225 Difference]: With dead ends: 339 [2019-10-22 11:23:43,124 INFO L226 Difference]: Without dead ends: 195 [2019-10-22 11:23:43,124 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 11:23:43,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2019-10-22 11:23:43,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 189. [2019-10-22 11:23:43,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2019-10-22 11:23:43,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 262 transitions. [2019-10-22 11:23:43,146 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 262 transitions. Word has length 19 [2019-10-22 11:23:43,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:23:43,146 INFO L462 AbstractCegarLoop]: Abstraction has 189 states and 262 transitions. [2019-10-22 11:23:43,146 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:23:43,146 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 262 transitions. [2019-10-22 11:23:43,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-10-22 11:23:43,147 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:23:43,147 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 11:23:43,351 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:23:43,351 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:23:43,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:23:43,352 INFO L82 PathProgramCache]: Analyzing trace with hash -445763815, now seen corresponding path program 1 times [2019-10-22 11:23:43,352 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:23:43,353 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [2099032088] [2019-10-22 11:23:43,353 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_80a39eb2-68e0-42ac-9215-49ebe96b1cfc/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 11:23:43,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:23:43,504 INFO L256 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-22 11:23:43,506 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:23:43,552 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 11:23:43,552 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:23:43,594 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 11:23:43,596 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2099032088] [2019-10-22 11:23:43,596 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:23:43,597 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 8 [2019-10-22 11:23:43,597 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883447357] [2019-10-22 11:23:43,597 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-22 11:23:43,598 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:23:43,598 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-22 11:23:43,599 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2019-10-22 11:23:43,599 INFO L87 Difference]: Start difference. First operand 189 states and 262 transitions. Second operand 9 states. [2019-10-22 11:23:44,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:23:44,510 INFO L93 Difference]: Finished difference Result 1213 states and 1716 transitions. [2019-10-22 11:23:44,510 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-10-22 11:23:44,511 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2019-10-22 11:23:44,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:23:44,515 INFO L225 Difference]: With dead ends: 1213 [2019-10-22 11:23:44,515 INFO L226 Difference]: Without dead ends: 1030 [2019-10-22 11:23:44,517 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 11:23:44,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1030 states. [2019-10-22 11:23:44,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1030 to 468. [2019-10-22 11:23:44,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 468 states. [2019-10-22 11:23:44,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 627 transitions. [2019-10-22 11:23:44,587 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 627 transitions. Word has length 25 [2019-10-22 11:23:44,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:23:44,588 INFO L462 AbstractCegarLoop]: Abstraction has 468 states and 627 transitions. [2019-10-22 11:23:44,588 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-22 11:23:44,588 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 627 transitions. [2019-10-22 11:23:44,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-10-22 11:23:44,593 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:23:44,593 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] [2019-10-22 11:23:44,794 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:23:44,794 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:23:44,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:23:44,795 INFO L82 PathProgramCache]: Analyzing trace with hash 2087198710, now seen corresponding path program 1 times [2019-10-22 11:23:44,795 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:23:44,795 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1314443327] [2019-10-22 11:23:44,795 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_80a39eb2-68e0-42ac-9215-49ebe96b1cfc/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 11:23:44,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:23:44,941 INFO L256 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-22 11:23:44,943 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:23:44,966 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 11:23:44,966 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:23:44,970 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 11:23:44,970 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1314443327] [2019-10-22 11:23:44,970 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:23:44,970 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-10-22 11:23:44,970 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557895050] [2019-10-22 11:23:44,971 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:23:44,971 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:23:44,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:23:44,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:23:44,972 INFO L87 Difference]: Start difference. First operand 468 states and 627 transitions. Second operand 5 states. [2019-10-22 11:23:45,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:23:45,189 INFO L93 Difference]: Finished difference Result 1415 states and 1860 transitions. [2019-10-22 11:23:45,189 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 11:23:45,189 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 39 [2019-10-22 11:23:45,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:23:45,193 INFO L225 Difference]: With dead ends: 1415 [2019-10-22 11:23:45,193 INFO L226 Difference]: Without dead ends: 953 [2019-10-22 11:23:45,195 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 75 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 11:23:45,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 953 states. [2019-10-22 11:23:45,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 953 to 513. [2019-10-22 11:23:45,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 513 states. [2019-10-22 11:23:45,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 672 transitions. [2019-10-22 11:23:45,247 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 672 transitions. Word has length 39 [2019-10-22 11:23:45,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:23:45,247 INFO L462 AbstractCegarLoop]: Abstraction has 513 states and 672 transitions. [2019-10-22 11:23:45,247 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:23:45,247 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 672 transitions. [2019-10-22 11:23:45,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-10-22 11:23:45,250 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:23:45,250 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] [2019-10-22 11:23:45,450 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:23:45,451 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:23:45,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:23:45,451 INFO L82 PathProgramCache]: Analyzing trace with hash 1953185204, now seen corresponding path program 1 times [2019-10-22 11:23:45,452 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:23:45,452 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [37309568] [2019-10-22 11:23:45,452 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_80a39eb2-68e0-42ac-9215-49ebe96b1cfc/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 11:23:45,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:23:45,587 INFO L256 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-22 11:23:45,589 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:23:45,603 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 11:23:45,603 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:23:45,618 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 11:23:45,618 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [37309568] [2019-10-22 11:23:45,618 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:23:45,619 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-10-22 11:23:45,619 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632636713] [2019-10-22 11:23:45,619 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 11:23:45,619 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:23:45,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 11:23:45,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-22 11:23:45,620 INFO L87 Difference]: Start difference. First operand 513 states and 672 transitions. Second operand 6 states. [2019-10-22 11:23:45,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:23:45,814 INFO L93 Difference]: Finished difference Result 1337 states and 1731 transitions. [2019-10-22 11:23:45,814 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 11:23:45,815 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 39 [2019-10-22 11:23:45,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:23:45,817 INFO L225 Difference]: With dead ends: 1337 [2019-10-22 11:23:45,817 INFO L226 Difference]: Without dead ends: 759 [2019-10-22 11:23:45,818 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 73 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 11:23:45,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 759 states. [2019-10-22 11:23:45,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 759 to 417. [2019-10-22 11:23:45,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 417 states. [2019-10-22 11:23:45,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 544 transitions. [2019-10-22 11:23:45,859 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 544 transitions. Word has length 39 [2019-10-22 11:23:45,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:23:45,860 INFO L462 AbstractCegarLoop]: Abstraction has 417 states and 544 transitions. [2019-10-22 11:23:45,860 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 11:23:45,860 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 544 transitions. [2019-10-22 11:23:45,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2019-10-22 11:23:45,861 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:23:45,861 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 11:23:46,062 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:23:46,062 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:23:46,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:23:46,062 INFO L82 PathProgramCache]: Analyzing trace with hash 371468141, now seen corresponding path program 1 times [2019-10-22 11:23:46,063 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:23:46,063 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [224943820] [2019-10-22 11:23:46,063 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_80a39eb2-68e0-42ac-9215-49ebe96b1cfc/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 11:23:46,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:23:46,165 INFO L256 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-22 11:23:46,166 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:23:46,187 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 11:23:46,187 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:23:46,190 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 11:23:46,191 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [224943820] [2019-10-22 11:23:46,191 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:23:46,191 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-10-22 11:23:46,191 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100168765] [2019-10-22 11:23:46,192 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:23:46,192 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:23:46,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:23:46,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:23:46,192 INFO L87 Difference]: Start difference. First operand 417 states and 544 transitions. Second operand 5 states. [2019-10-22 11:23:46,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:23:46,560 INFO L93 Difference]: Finished difference Result 1079 states and 1404 transitions. [2019-10-22 11:23:46,561 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-22 11:23:46,561 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 41 [2019-10-22 11:23:46,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:23:46,565 INFO L225 Difference]: With dead ends: 1079 [2019-10-22 11:23:46,565 INFO L226 Difference]: Without dead ends: 1073 [2019-10-22 11:23:46,566 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 11:23:46,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1073 states. [2019-10-22 11:23:46,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1073 to 417. [2019-10-22 11:23:46,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 417 states. [2019-10-22 11:23:46,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 538 transitions. [2019-10-22 11:23:46,619 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 538 transitions. Word has length 41 [2019-10-22 11:23:46,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:23:46,620 INFO L462 AbstractCegarLoop]: Abstraction has 417 states and 538 transitions. [2019-10-22 11:23:46,620 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:23:46,620 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 538 transitions. [2019-10-22 11:23:46,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-10-22 11:23:46,621 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:23:46,621 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] [2019-10-22 11:23:46,822 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:23:46,822 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:23:46,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:23:46,822 INFO L82 PathProgramCache]: Analyzing trace with hash 2113837568, now seen corresponding path program 1 times [2019-10-22 11:23:46,823 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:23:46,823 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [456840691] [2019-10-22 11:23:46,823 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_80a39eb2-68e0-42ac-9215-49ebe96b1cfc/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 11:23:46,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:23:46,958 INFO L256 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 11:23:46,960 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:23:46,977 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 11:23:46,978 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:23:46,984 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 11:23:46,985 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [456840691] [2019-10-22 11:23:46,985 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:23:46,985 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-10-22 11:23:46,985 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334718895] [2019-10-22 11:23:46,986 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:23:46,986 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:23:46,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:23:46,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:23:46,987 INFO L87 Difference]: Start difference. First operand 417 states and 538 transitions. Second operand 3 states. [2019-10-22 11:23:47,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:23:47,035 INFO L93 Difference]: Finished difference Result 417 states and 538 transitions. [2019-10-22 11:23:47,035 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:23:47,036 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 45 [2019-10-22 11:23:47,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:23:47,037 INFO L225 Difference]: With dead ends: 417 [2019-10-22 11:23:47,037 INFO L226 Difference]: Without dead ends: 205 [2019-10-22 11:23:47,038 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 87 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 11:23:47,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 205 states. [2019-10-22 11:23:47,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 205 to 205. [2019-10-22 11:23:47,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 205 states. [2019-10-22 11:23:47,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 205 states to 205 states and 274 transitions. [2019-10-22 11:23:47,060 INFO L78 Accepts]: Start accepts. Automaton has 205 states and 274 transitions. Word has length 45 [2019-10-22 11:23:47,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:23:47,061 INFO L462 AbstractCegarLoop]: Abstraction has 205 states and 274 transitions. [2019-10-22 11:23:47,061 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:23:47,061 INFO L276 IsEmpty]: Start isEmpty. Operand 205 states and 274 transitions. [2019-10-22 11:23:47,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2019-10-22 11:23:47,063 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:23:47,063 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] [2019-10-22 11:23:47,263 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:23:47,264 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:23:47,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:23:47,264 INFO L82 PathProgramCache]: Analyzing trace with hash -103400707, now seen corresponding path program 1 times [2019-10-22 11:23:47,264 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:23:47,265 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [814545941] [2019-10-22 11:23:47,265 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_80a39eb2-68e0-42ac-9215-49ebe96b1cfc/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 11:23:47,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:23:47,393 INFO L256 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-22 11:23:47,395 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:23:47,425 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 11:23:47,425 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:23:47,471 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 11:23:47,471 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [814545941] [2019-10-22 11:23:47,471 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [83637005] [2019-10-22 11:23:47,471 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_80a39eb2-68e0-42ac-9215-49ebe96b1cfc/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 11:23:47,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:23:47,573 INFO L256 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-22 11:23:47,574 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:23:47,587 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 11:23:47,587 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:23:47,594 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 11:23:47,595 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-22 11:23:47,595 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5] total 9 [2019-10-22 11:23:47,595 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35891662] [2019-10-22 11:23:47,596 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-22 11:23:47,596 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:23:47,596 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-22 11:23:47,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-10-22 11:23:47,596 INFO L87 Difference]: Start difference. First operand 205 states and 274 transitions. Second operand 10 states. [2019-10-22 11:23:48,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:23:48,376 INFO L93 Difference]: Finished difference Result 1277 states and 1754 transitions. [2019-10-22 11:23:48,377 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-10-22 11:23:48,377 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 50 [2019-10-22 11:23:48,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:23:48,380 INFO L225 Difference]: With dead ends: 1277 [2019-10-22 11:23:48,381 INFO L226 Difference]: Without dead ends: 1120 [2019-10-22 11:23:48,382 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 187 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=198, Invalid=558, Unknown=0, NotChecked=0, Total=756 [2019-10-22 11:23:48,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1120 states. [2019-10-22 11:23:48,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1120 to 341. [2019-10-22 11:23:48,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 341 states. [2019-10-22 11:23:48,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 463 transitions. [2019-10-22 11:23:48,427 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 463 transitions. Word has length 50 [2019-10-22 11:23:48,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:23:48,427 INFO L462 AbstractCegarLoop]: Abstraction has 341 states and 463 transitions. [2019-10-22 11:23:48,427 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-22 11:23:48,427 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 463 transitions. [2019-10-22 11:23:48,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2019-10-22 11:23:48,429 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:23:48,429 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] [2019-10-22 11:23:48,829 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 11:23:48,830 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:23:48,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:23:48,830 INFO L82 PathProgramCache]: Analyzing trace with hash -1377844072, now seen corresponding path program 2 times [2019-10-22 11:23:48,830 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:23:48,831 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [526344901] [2019-10-22 11:23:48,831 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_80a39eb2-68e0-42ac-9215-49ebe96b1cfc/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 11:23:50,814 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-10-22 11:23:50,815 INFO L250 tOrderPrioritization]: Conjunction of SSA is sat [2019-10-22 11:23:52,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 11:23:53,115 INFO L168 tionRefinementEngine]: Strategy WALRUS found a feasible trace [2019-10-22 11:23:53,115 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-22 11:23:53,316 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:23:53,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 11:23:53 BoogieIcfgContainer [2019-10-22 11:23:53,445 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 11:23:53,446 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 11:23:53,446 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 11:23:53,446 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 11:23:53,446 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:23:41" (3/4) ... [2019-10-22 11:23:53,449 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-10-22 11:23:53,583 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_80a39eb2-68e0-42ac-9215-49ebe96b1cfc/bin/utaipan/witness.graphml [2019-10-22 11:23:53,583 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 11:23:53,585 INFO L168 Benchmark]: Toolchain (without parser) took 13673.86 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 289.9 MB). Free memory was 941.6 MB in the beginning and 941.9 MB in the end (delta: -289.6 kB). Peak memory consumption was 289.6 MB. Max. memory is 11.5 GB. [2019-10-22 11:23:53,586 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 1.0 GB. Free memory is still 972.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:23:53,586 INFO L168 Benchmark]: CACSL2BoogieTranslator took 686.03 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 168.3 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -207.3 MB). Peak memory consumption was 25.7 MB. Max. memory is 11.5 GB. [2019-10-22 11:23:53,587 INFO L168 Benchmark]: Boogie Procedure Inliner took 66.70 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: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2019-10-22 11:23:53,587 INFO L168 Benchmark]: Boogie Preprocessor took 40.60 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:23:53,587 INFO L168 Benchmark]: RCFGBuilder took 988.88 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 69.4 MB). Peak memory consumption was 69.4 MB. Max. memory is 11.5 GB. [2019-10-22 11:23:53,587 INFO L168 Benchmark]: TraceAbstraction took 11749.33 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 121.6 MB). Free memory was 1.1 GB in the beginning and 975.8 MB in the end (delta: 97.3 MB). Peak memory consumption was 218.9 MB. Max. memory is 11.5 GB. [2019-10-22 11:23:53,588 INFO L168 Benchmark]: Witness Printer took 137.87 ms. Allocated memory is still 1.3 GB. Free memory was 975.8 MB in the beginning and 941.9 MB in the end (delta: 33.9 MB). Peak memory consumption was 33.9 MB. Max. memory is 11.5 GB. [2019-10-22 11:23:53,589 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 1.0 GB. Free memory is still 972.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 686.03 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 168.3 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -207.3 MB). Peak memory consumption was 25.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 66.70 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: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 40.60 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 988.88 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 69.4 MB). Peak memory consumption was 69.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 11749.33 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 121.6 MB). Free memory was 1.1 GB in the beginning and 975.8 MB in the end (delta: 97.3 MB). Peak memory consumption was 218.9 MB. Max. memory is 11.5 GB. * Witness Printer took 137.87 ms. Allocated memory is still 1.3 GB. Free memory was 975.8 MB in the beginning and 941.9 MB in the end (delta: 33.9 MB). Peak memory consumption was 33.9 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 329]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L123] int pumpRunning = 0; [L124] int systemActive = 1; [L334] int cleanupTimeShifts = 4; [L434] int waterLevel = 1; [L435] int methaneLevelCritical = 0; [L697] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L410] int retValue_acc ; [L411] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L946] int retValue_acc ; [L949] retValue_acc = 1 [L950] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L417] tmp = valid_product() [L419] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L47] int splverifierCounter ; [L48] int tmp ; [L49] int tmp___0 ; [L50] int tmp___1 ; [L51] int tmp___2 ; [L54] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L56] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L58] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L64] tmp = __VERIFIER_nondet_int() [L66] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L452] COND TRUE waterLevel < 2 [L453] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L74] tmp___0 = __VERIFIER_nondet_int() [L76] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L84] tmp___2 = __VERIFIER_nondet_int() [L86] COND TRUE \read(tmp___2) [L320] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L131] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L138] COND TRUE \read(systemActive) [L186] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L189] COND FALSE !(\read(pumpRunning)) [L160] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L163] COND TRUE ! pumpRunning [L283] int retValue_acc ; [L284] int tmp ; [L285] int tmp___0 ; [L514] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L517] COND FALSE !(waterLevel < 2) [L521] retValue_acc = 0 [L522] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L289] tmp = isHighWaterSensorDry() [L291] COND FALSE !(\read(tmp)) [L294] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L296] retValue_acc = tmp___0 [L297] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L165] tmp = isHighWaterLevel() [L167] COND TRUE \read(tmp) [L214] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L895] int tmp ; [L896] int tmp___0 ; [L505] int retValue_acc ; [L508] retValue_acc = waterLevel [L509] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L900] tmp = getWaterLevel() [L902] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L56] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L58] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L64] tmp = __VERIFIER_nondet_int() [L66] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L74] tmp___0 = __VERIFIER_nondet_int() [L76] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L84] tmp___2 = __VERIFIER_nondet_int() [L86] COND TRUE \read(tmp___2) [L320] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L131] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L440] COND TRUE waterLevel > 0 [L441] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L138] COND TRUE \read(systemActive) [L186] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L189] COND TRUE \read(pumpRunning) [L227] int retValue_acc ; [L473] int retValue_acc ; [L476] retValue_acc = methaneLevelCritical [L477] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L231] retValue_acc = isMethaneLevelCritical() [L233] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L191] tmp = isMethaneAlarm() [L193] COND FALSE !(\read(tmp)) [L160] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L163] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L895] int tmp ; [L896] int tmp___0 ; [L505] int retValue_acc ; [L508] retValue_acc = waterLevel [L509] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L900] tmp = getWaterLevel() [L902] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L56] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L58] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L64] tmp = __VERIFIER_nondet_int() [L66] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L74] tmp___0 = __VERIFIER_nondet_int() [L76] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L84] tmp___2 = __VERIFIER_nondet_int() [L86] COND TRUE \read(tmp___2) [L320] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L131] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L440] COND TRUE waterLevel > 0 [L441] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L138] COND TRUE \read(systemActive) [L186] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L189] COND TRUE \read(pumpRunning) [L227] int retValue_acc ; [L473] int retValue_acc ; [L476] retValue_acc = methaneLevelCritical [L477] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L231] retValue_acc = isMethaneLevelCritical() [L233] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L191] tmp = isMethaneAlarm() [L193] COND FALSE !(\read(tmp)) [L160] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L163] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L895] int tmp ; [L896] int tmp___0 ; [L505] int retValue_acc ; [L508] retValue_acc = waterLevel [L509] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L900] tmp = getWaterLevel() [L902] COND TRUE tmp == 0 [L238] int retValue_acc ; [L241] retValue_acc = pumpRunning [L242] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L904] tmp___0 = isPumpRunning() [L906] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L329] __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, 113 locations, 3 error locations. Result: UNSAFE, OverallTime: 11.6s, OverallIterations: 10, TraceHistogramMax: 3, AutomataDifference: 2.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 1685 SDtfs, 4234 SDslu, 4165 SDs, 0 SdLazy, 806 SolverSat, 251 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 701 GetRequests, 638 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=513occurred in iteration=5, 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, 2896 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 2.4s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 410 NumberOfCodeBlocks, 410 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 662 ConstructedInterpolants, 0 QuantifiedInterpolants, 61938 SizeOfPredicates, 26 NumberOfNonLiveVariables, 1997 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...