./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product46.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_3caeaa0e-e203-44c6-ba5d-45d50aa588e5/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_3caeaa0e-e203-44c6-ba5d-45d50aa588e5/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_3caeaa0e-e203-44c6-ba5d-45d50aa588e5/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_3caeaa0e-e203-44c6-ba5d-45d50aa588e5/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product46.cil.c -s /tmp/vcloud-vcloud-master/worker/working_dir_3caeaa0e-e203-44c6-ba5d-45d50aa588e5/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_3caeaa0e-e203-44c6-ba5d-45d50aa588e5/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 209a5f451d4da606f6f89775a0cb8490169e98a1 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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_3caeaa0e-e203-44c6-ba5d-45d50aa588e5/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_3caeaa0e-e203-44c6-ba5d-45d50aa588e5/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_3caeaa0e-e203-44c6-ba5d-45d50aa588e5/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_3caeaa0e-e203-44c6-ba5d-45d50aa588e5/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product46.cil.c -s /tmp/vcloud-vcloud-master/worker/working_dir_3caeaa0e-e203-44c6-ba5d-45d50aa588e5/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_3caeaa0e-e203-44c6-ba5d-45d50aa588e5/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 209a5f451d4da606f6f89775a0cb8490169e98a1 ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 11:22:09,460 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:22:09,461 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:22:09,470 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:22:09,470 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:22:09,471 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:22:09,472 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:22:09,473 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:22:09,474 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:22:09,475 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:22:09,475 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:22:09,476 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:22:09,476 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:22:09,477 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:22:09,478 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:22:09,479 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:22:09,480 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:22:09,480 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:22:09,482 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:22:09,483 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:22:09,485 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:22:09,485 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:22:09,486 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:22:09,487 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:22:09,489 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:22:09,489 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:22:09,489 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:22:09,490 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:22:09,491 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:22:09,491 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:22:09,492 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:22:09,492 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:22:09,493 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:22:09,494 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:22:09,495 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:22:09,495 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:22:09,495 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:22:09,496 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:22:09,496 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:22:09,497 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:22:09,497 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:22:09,498 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_3caeaa0e-e203-44c6-ba5d-45d50aa588e5/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-10-22 11:22:09,509 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:22:09,509 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:22:09,510 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:22:09,510 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:22:09,510 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:22:09,510 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:22:09,511 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-10-22 11:22:09,511 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:22:09,511 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:22:09,511 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-10-22 11:22:09,511 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-10-22 11:22:09,511 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:22:09,512 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:22:09,512 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:22:09,512 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 11:22:09,512 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:22:09,513 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:22:09,513 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:22:09,513 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:22:09,513 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:22:09,513 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:22:09,513 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:22:09,513 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:22:09,514 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:22:09,514 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:22:09,514 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:22:09,514 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:22:09,514 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:22:09,514 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:22:09,515 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:22:09,515 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:22:09,515 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-22 11:22:09,515 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 11:22:09,515 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:22:09,515 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:22:09,515 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_3caeaa0e-e203-44c6-ba5d-45d50aa588e5/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 -> 209a5f451d4da606f6f89775a0cb8490169e98a1 [2019-10-22 11:22:09,539 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:22:09,549 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:22:09,551 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:22:09,553 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:22:09,553 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:22:09,554 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_3caeaa0e-e203-44c6-ba5d-45d50aa588e5/bin/utaipan/../../sv-benchmarks/c/product-lines/minepump_spec4_product46.cil.c [2019-10-22 11:22:09,598 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_3caeaa0e-e203-44c6-ba5d-45d50aa588e5/bin/utaipan/data/539057e7d/cf3e8aed159f45df93185bea9a01d7a3/FLAGd985b22a5 [2019-10-22 11:22:10,015 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:22:10,016 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_3caeaa0e-e203-44c6-ba5d-45d50aa588e5/sv-benchmarks/c/product-lines/minepump_spec4_product46.cil.c [2019-10-22 11:22:10,026 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_3caeaa0e-e203-44c6-ba5d-45d50aa588e5/bin/utaipan/data/539057e7d/cf3e8aed159f45df93185bea9a01d7a3/FLAGd985b22a5 [2019-10-22 11:22:10,397 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_3caeaa0e-e203-44c6-ba5d-45d50aa588e5/bin/utaipan/data/539057e7d/cf3e8aed159f45df93185bea9a01d7a3 [2019-10-22 11:22:10,403 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:22:10,404 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:22:10,405 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:22:10,405 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:22:10,422 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:22:10,423 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:22:10" (1/1) ... [2019-10-22 11:22:10,433 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47b5914b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:10, skipping insertion in model container [2019-10-22 11:22:10,433 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:22:10" (1/1) ... [2019-10-22 11:22:10,441 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:22:10,493 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:22:10,839 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:22:10,858 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:22:10,934 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:22:10,957 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:22:10,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:10 WrapperNode [2019-10-22 11:22:10,958 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:22:10,958 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:22:10,958 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:22:10,958 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:22:10,966 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:10" (1/1) ... [2019-10-22 11:22:10,991 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:10" (1/1) ... [2019-10-22 11:22:11,035 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:22:11,040 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:22:11,040 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:22:11,040 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:22:11,052 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:10" (1/1) ... [2019-10-22 11:22:11,052 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:10" (1/1) ... [2019-10-22 11:22:11,056 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:10" (1/1) ... [2019-10-22 11:22:11,056 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:10" (1/1) ... [2019-10-22 11:22:11,066 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:10" (1/1) ... [2019-10-22 11:22:11,073 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:10" (1/1) ... [2019-10-22 11:22:11,076 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:10" (1/1) ... [2019-10-22 11:22:11,084 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:22:11,084 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:22:11,084 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:22:11,084 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:22:11,090 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:10" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3caeaa0e-e203-44c6-ba5d-45d50aa588e5/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 11:22:11,149 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 11:22:11,149 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-22 11:22:11,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:22:11,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:22:11,855 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:22:11,856 INFO L284 CfgBuilder]: Removed 194 assume(true) statements. [2019-10-22 11:22:11,857 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:22:11 BoogieIcfgContainer [2019-10-22 11:22:11,857 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:22:11,858 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:22:11,858 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:22:11,861 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:22:11,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:22:10" (1/3) ... [2019-10-22 11:22:11,862 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16325a74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:22:11, skipping insertion in model container [2019-10-22 11:22:11,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:10" (2/3) ... [2019-10-22 11:22:11,862 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16325a74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:22:11, skipping insertion in model container [2019-10-22 11:22:11,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:22:11" (3/3) ... [2019-10-22 11:22:11,864 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product46.cil.c [2019-10-22 11:22:11,873 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:22:11,881 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-10-22 11:22:11,892 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-10-22 11:22:11,915 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:22:11,915 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:22:11,916 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:22:11,916 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:22:11,916 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:22:11,916 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:22:11,916 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:22:11,916 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:22:11,932 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states. [2019-10-22 11:22:11,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-22 11:22:11,938 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:22:11,939 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:22:11,941 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:22:11,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:22:11,946 INFO L82 PathProgramCache]: Analyzing trace with hash -1027746333, now seen corresponding path program 1 times [2019-10-22 11:22:11,954 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:22:11,955 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883702780] [2019-10-22 11:22:11,955 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:22:11,955 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:22:11,955 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:22:12,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:22:12,180 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 11:22:12,180 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883702780] [2019-10-22 11:22:12,180 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:22:12,181 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 11:22:12,181 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481735802] [2019-10-22 11:22:12,184 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-22 11:22:12,185 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:22:12,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-22 11:22:12,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 11:22:12,195 INFO L87 Difference]: Start difference. First operand 129 states. Second operand 2 states. [2019-10-22 11:22:12,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:22:12,225 INFO L93 Difference]: Finished difference Result 252 states and 377 transitions. [2019-10-22 11:22:12,225 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 11:22:12,226 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2019-10-22 11:22:12,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:22:12,236 INFO L225 Difference]: With dead ends: 252 [2019-10-22 11:22:12,237 INFO L226 Difference]: Without dead ends: 125 [2019-10-22 11:22:12,240 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 11:22:12,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2019-10-22 11:22:12,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2019-10-22 11:22:12,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2019-10-22 11:22:12,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 180 transitions. [2019-10-22 11:22:12,279 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 180 transitions. Word has length 16 [2019-10-22 11:22:12,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:22:12,279 INFO L462 AbstractCegarLoop]: Abstraction has 125 states and 180 transitions. [2019-10-22 11:22:12,279 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-22 11:22:12,279 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 180 transitions. [2019-10-22 11:22:12,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-22 11:22:12,280 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:22:12,280 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 11:22:12,281 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:22:12,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:22:12,281 INFO L82 PathProgramCache]: Analyzing trace with hash -2074503230, now seen corresponding path program 1 times [2019-10-22 11:22:12,281 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:22:12,281 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502751132] [2019-10-22 11:22:12,281 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:22:12,282 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:22:12,282 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:22:12,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:22:12,393 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 11:22:12,394 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502751132] [2019-10-22 11:22:12,394 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:22:12,394 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 11:22:12,394 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007128456] [2019-10-22 11:22:12,395 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:22:12,396 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:22:12,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:22:12,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:22:12,396 INFO L87 Difference]: Start difference. First operand 125 states and 180 transitions. Second operand 3 states. [2019-10-22 11:22:12,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:22:12,412 INFO L93 Difference]: Finished difference Result 125 states and 180 transitions. [2019-10-22 11:22:12,415 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:22:12,415 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2019-10-22 11:22:12,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:22:12,415 INFO L225 Difference]: With dead ends: 125 [2019-10-22 11:22:12,415 INFO L226 Difference]: Without dead ends: 51 [2019-10-22 11:22:12,416 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 11:22:12,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2019-10-22 11:22:12,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2019-10-22 11:22:12,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2019-10-22 11:22:12,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 73 transitions. [2019-10-22 11:22:12,423 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 73 transitions. Word has length 17 [2019-10-22 11:22:12,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:22:12,424 INFO L462 AbstractCegarLoop]: Abstraction has 51 states and 73 transitions. [2019-10-22 11:22:12,424 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:22:12,424 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 73 transitions. [2019-10-22 11:22:12,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-10-22 11:22:12,425 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:22:12,425 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 11:22:12,425 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:22:12,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:22:12,425 INFO L82 PathProgramCache]: Analyzing trace with hash 640818778, now seen corresponding path program 1 times [2019-10-22 11:22:12,425 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:22:12,426 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20880713] [2019-10-22 11:22:12,426 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:22:12,426 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:22:12,426 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:22:12,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:22:12,486 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 11:22:12,487 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20880713] [2019-10-22 11:22:12,487 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:22:12,487 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 11:22:12,487 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235116435] [2019-10-22 11:22:12,488 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:22:12,488 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:22:12,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:22:12,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:22:12,488 INFO L87 Difference]: Start difference. First operand 51 states and 73 transitions. Second operand 5 states. [2019-10-22 11:22:12,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:22:12,547 INFO L93 Difference]: Finished difference Result 96 states and 140 transitions. [2019-10-22 11:22:12,551 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 11:22:12,551 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2019-10-22 11:22:12,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:22:12,552 INFO L225 Difference]: With dead ends: 96 [2019-10-22 11:22:12,552 INFO L226 Difference]: Without dead ends: 51 [2019-10-22 11:22:12,552 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 11:22:12,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2019-10-22 11:22:12,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2019-10-22 11:22:12,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2019-10-22 11:22:12,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 72 transitions. [2019-10-22 11:22:12,561 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 72 transitions. Word has length 22 [2019-10-22 11:22:12,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:22:12,561 INFO L462 AbstractCegarLoop]: Abstraction has 51 states and 72 transitions. [2019-10-22 11:22:12,561 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:22:12,561 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 72 transitions. [2019-10-22 11:22:12,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-10-22 11:22:12,562 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:22:12,562 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 11:22:12,562 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:22:12,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:22:12,562 INFO L82 PathProgramCache]: Analyzing trace with hash -855709928, now seen corresponding path program 1 times [2019-10-22 11:22:12,563 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:22:12,563 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756400238] [2019-10-22 11:22:12,563 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:22:12,563 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:22:12,563 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:22:12,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:22:12,650 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 11:22:12,651 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756400238] [2019-10-22 11:22:12,651 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:22:12,651 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 11:22:12,651 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681657688] [2019-10-22 11:22:12,651 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:22:12,652 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:22:12,652 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:22:12,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:22:12,652 INFO L87 Difference]: Start difference. First operand 51 states and 72 transitions. Second operand 3 states. [2019-10-22 11:22:12,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:22:12,716 INFO L93 Difference]: Finished difference Result 117 states and 168 transitions. [2019-10-22 11:22:12,719 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:22:12,719 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2019-10-22 11:22:12,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:22:12,719 INFO L225 Difference]: With dead ends: 117 [2019-10-22 11:22:12,720 INFO L226 Difference]: Without dead ends: 72 [2019-10-22 11:22:12,720 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 11:22:12,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2019-10-22 11:22:12,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 70. [2019-10-22 11:22:12,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2019-10-22 11:22:12,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 98 transitions. [2019-10-22 11:22:12,731 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 98 transitions. Word has length 24 [2019-10-22 11:22:12,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:22:12,731 INFO L462 AbstractCegarLoop]: Abstraction has 70 states and 98 transitions. [2019-10-22 11:22:12,731 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:22:12,731 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 98 transitions. [2019-10-22 11:22:12,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-10-22 11:22:12,732 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:22:12,732 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] [2019-10-22 11:22:12,732 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:22:12,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:22:12,733 INFO L82 PathProgramCache]: Analyzing trace with hash -407287284, now seen corresponding path program 1 times [2019-10-22 11:22:12,733 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:22:12,733 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916011327] [2019-10-22 11:22:12,733 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:22:12,733 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:22:12,734 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:22:12,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:22:12,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:22:12,828 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916011327] [2019-10-22 11:22:12,828 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:22:12,828 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 11:22:12,829 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770969655] [2019-10-22 11:22:12,829 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:22:12,829 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:22:12,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:22:12,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:22:12,829 INFO L87 Difference]: Start difference. First operand 70 states and 98 transitions. Second operand 5 states. [2019-10-22 11:22:12,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:22:12,930 INFO L93 Difference]: Finished difference Result 247 states and 354 transitions. [2019-10-22 11:22:12,931 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 11:22:12,931 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2019-10-22 11:22:12,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:22:12,932 INFO L225 Difference]: With dead ends: 247 [2019-10-22 11:22:12,932 INFO L226 Difference]: Without dead ends: 183 [2019-10-22 11:22:12,933 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 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 11:22:12,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2019-10-22 11:22:12,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 113. [2019-10-22 11:22:12,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2019-10-22 11:22:12,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 155 transitions. [2019-10-22 11:22:12,949 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 155 transitions. Word has length 30 [2019-10-22 11:22:12,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:22:12,949 INFO L462 AbstractCegarLoop]: Abstraction has 113 states and 155 transitions. [2019-10-22 11:22:12,949 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:22:12,949 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 155 transitions. [2019-10-22 11:22:12,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-10-22 11:22:12,950 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:22:12,950 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] [2019-10-22 11:22:12,950 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:22:12,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:22:12,951 INFO L82 PathProgramCache]: Analyzing trace with hash 1879863818, now seen corresponding path program 1 times [2019-10-22 11:22:12,951 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:22:12,951 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582258179] [2019-10-22 11:22:12,951 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:22:12,952 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:22:12,953 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:22:12,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:22:13,029 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 11:22:13,030 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582258179] [2019-10-22 11:22:13,030 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:22:13,030 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 11:22:13,030 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014092239] [2019-10-22 11:22:13,030 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:22:13,031 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:22:13,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:22:13,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:22:13,031 INFO L87 Difference]: Start difference. First operand 113 states and 155 transitions. Second operand 5 states. [2019-10-22 11:22:13,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:22:13,171 INFO L93 Difference]: Finished difference Result 241 states and 338 transitions. [2019-10-22 11:22:13,173 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-22 11:22:13,174 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2019-10-22 11:22:13,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:22:13,175 INFO L225 Difference]: With dead ends: 241 [2019-10-22 11:22:13,175 INFO L226 Difference]: Without dead ends: 239 [2019-10-22 11:22:13,176 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 11:22:13,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2019-10-22 11:22:13,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 113. [2019-10-22 11:22:13,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2019-10-22 11:22:13,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 154 transitions. [2019-10-22 11:22:13,198 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 154 transitions. Word has length 31 [2019-10-22 11:22:13,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:22:13,203 INFO L462 AbstractCegarLoop]: Abstraction has 113 states and 154 transitions. [2019-10-22 11:22:13,203 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:22:13,203 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 154 transitions. [2019-10-22 11:22:13,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-10-22 11:22:13,204 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:22:13,204 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] [2019-10-22 11:22:13,205 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:22:13,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:22:13,205 INFO L82 PathProgramCache]: Analyzing trace with hash 1871204221, now seen corresponding path program 1 times [2019-10-22 11:22:13,205 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:22:13,205 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756346899] [2019-10-22 11:22:13,205 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:22:13,206 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:22:13,206 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:22:13,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:22:13,266 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 11:22:13,267 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756346899] [2019-10-22 11:22:13,267 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:22:13,267 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 11:22:13,267 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020675533] [2019-10-22 11:22:13,268 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:22:13,268 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:22:13,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:22:13,268 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:22:13,269 INFO L87 Difference]: Start difference. First operand 113 states and 154 transitions. Second operand 5 states. [2019-10-22 11:22:13,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:22:13,341 INFO L93 Difference]: Finished difference Result 303 states and 412 transitions. [2019-10-22 11:22:13,342 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 11:22:13,342 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2019-10-22 11:22:13,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:22:13,343 INFO L225 Difference]: With dead ends: 303 [2019-10-22 11:22:13,343 INFO L226 Difference]: Without dead ends: 196 [2019-10-22 11:22:13,344 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 11:22:13,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2019-10-22 11:22:13,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 122. [2019-10-22 11:22:13,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2019-10-22 11:22:13,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 163 transitions. [2019-10-22 11:22:13,360 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 163 transitions. Word has length 34 [2019-10-22 11:22:13,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:22:13,360 INFO L462 AbstractCegarLoop]: Abstraction has 122 states and 163 transitions. [2019-10-22 11:22:13,360 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:22:13,360 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 163 transitions. [2019-10-22 11:22:13,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-10-22 11:22:13,361 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:22:13,361 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] [2019-10-22 11:22:13,362 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:22:13,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:22:13,362 INFO L82 PathProgramCache]: Analyzing trace with hash 1284398207, now seen corresponding path program 1 times [2019-10-22 11:22:13,362 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:22:13,363 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206983514] [2019-10-22 11:22:13,363 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:22:13,363 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:22:13,363 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:22:13,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:22:13,455 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 11:22:13,456 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206983514] [2019-10-22 11:22:13,456 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:22:13,456 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-22 11:22:13,456 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769636523] [2019-10-22 11:22:13,456 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 11:22:13,457 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:22:13,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 11:22:13,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-22 11:22:13,457 INFO L87 Difference]: Start difference. First operand 122 states and 163 transitions. Second operand 6 states. [2019-10-22 11:22:13,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:22:13,564 INFO L93 Difference]: Finished difference Result 281 states and 376 transitions. [2019-10-22 11:22:13,565 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-22 11:22:13,565 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 34 [2019-10-22 11:22:13,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:22:13,566 INFO L225 Difference]: With dead ends: 281 [2019-10-22 11:22:13,566 INFO L226 Difference]: Without dead ends: 165 [2019-10-22 11:22:13,566 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 11:22:13,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2019-10-22 11:22:13,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 104. [2019-10-22 11:22:13,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2019-10-22 11:22:13,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 136 transitions. [2019-10-22 11:22:13,581 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 136 transitions. Word has length 34 [2019-10-22 11:22:13,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:22:13,581 INFO L462 AbstractCegarLoop]: Abstraction has 104 states and 136 transitions. [2019-10-22 11:22:13,581 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 11:22:13,581 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 136 transitions. [2019-10-22 11:22:13,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-10-22 11:22:13,585 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:22:13,585 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] [2019-10-22 11:22:13,585 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:22:13,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:22:13,586 INFO L82 PathProgramCache]: Analyzing trace with hash 4534529, now seen corresponding path program 1 times [2019-10-22 11:22:13,586 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:22:13,586 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715023011] [2019-10-22 11:22:13,586 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:22:13,586 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:22:13,586 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:22:13,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:22:13,656 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 11:22:13,656 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715023011] [2019-10-22 11:22:13,656 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:22:13,657 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 11:22:13,657 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113397336] [2019-10-22 11:22:13,657 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:22:13,657 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:22:13,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:22:13,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:22:13,658 INFO L87 Difference]: Start difference. First operand 104 states and 136 transitions. Second operand 5 states. [2019-10-22 11:22:13,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:22:13,775 INFO L93 Difference]: Finished difference Result 283 states and 381 transitions. [2019-10-22 11:22:13,775 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 11:22:13,775 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2019-10-22 11:22:13,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:22:13,776 INFO L225 Difference]: With dead ends: 283 [2019-10-22 11:22:13,776 INFO L226 Difference]: Without dead ends: 209 [2019-10-22 11:22:13,777 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 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 11:22:13,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2019-10-22 11:22:13,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 145. [2019-10-22 11:22:13,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2019-10-22 11:22:13,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 188 transitions. [2019-10-22 11:22:13,802 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 188 transitions. Word has length 34 [2019-10-22 11:22:13,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:22:13,804 INFO L462 AbstractCegarLoop]: Abstraction has 145 states and 188 transitions. [2019-10-22 11:22:13,804 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:22:13,805 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 188 transitions. [2019-10-22 11:22:13,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-10-22 11:22:13,806 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:22:13,806 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:22:13,806 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:22:13,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:22:13,806 INFO L82 PathProgramCache]: Analyzing trace with hash 596801484, now seen corresponding path program 1 times [2019-10-22 11:22:13,806 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:22:13,807 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465704507] [2019-10-22 11:22:13,807 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:22:13,807 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:22:13,807 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:22:13,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:22:13,880 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 11:22:13,880 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465704507] [2019-10-22 11:22:13,880 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1200422744] [2019-10-22 11:22:13,881 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3caeaa0e-e203-44c6-ba5d-45d50aa588e5/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 11:22:13,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:22:13,999 INFO L256 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-22 11:22:14,005 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:22:14,032 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 11:22:14,032 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:22:14,059 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 11:22:14,062 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [161076104] [2019-10-22 11:22:14,068 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 54 [2019-10-22 11:22:14,110 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2019-10-22 11:22:14,110 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-22 11:22:14,530 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:22:14,530 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 11:22:14,535 INFO L168 Benchmark]: Toolchain (without parser) took 4130.76 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.0 MB). Free memory was 940.6 MB in the beginning and 981.6 MB in the end (delta: -41.0 MB). Peak memory consumption was 89.1 MB. Max. memory is 11.5 GB. [2019-10-22 11:22:14,535 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 960.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:22:14,536 INFO L168 Benchmark]: CACSL2BoogieTranslator took 552.92 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.0 MB). Free memory was 939.2 MB in the beginning and 1.1 GB in the end (delta: -176.0 MB). Peak memory consumption was 22.1 MB. Max. memory is 11.5 GB. [2019-10-22 11:22:14,536 INFO L168 Benchmark]: Boogie Procedure Inliner took 81.32 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-10-22 11:22:14,537 INFO L168 Benchmark]: Boogie Preprocessor took 44.04 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2019-10-22 11:22:14,537 INFO L168 Benchmark]: RCFGBuilder took 773.10 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 68.2 MB). Peak memory consumption was 68.2 MB. Max. memory is 11.5 GB. [2019-10-22 11:22:14,538 INFO L168 Benchmark]: TraceAbstraction took 2675.37 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 981.6 MB in the end (delta: 57.5 MB). Peak memory consumption was 57.5 MB. Max. memory is 11.5 GB. [2019-10-22 11:22:14,540 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 960.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 552.92 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 130.0 MB). Free memory was 939.2 MB in the beginning and 1.1 GB in the end (delta: -176.0 MB). Peak memory consumption was 22.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 81.32 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 44.04 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 773.10 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 68.2 MB). Peak memory consumption was 68.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2675.37 ms. Allocated memory is still 1.2 GB. Free memory was 1.0 GB in the beginning and 981.6 MB in the end (delta: 57.5 MB). Peak memory consumption was 57.5 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 11:22:16,576 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:22:16,577 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:22:16,586 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:22:16,586 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:22:16,587 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:22:16,588 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:22:16,589 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:22:16,590 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:22:16,591 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:22:16,592 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:22:16,593 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:22:16,593 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:22:16,594 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:22:16,594 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:22:16,595 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:22:16,596 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:22:16,597 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:22:16,598 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:22:16,599 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:22:16,601 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:22:16,602 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:22:16,602 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:22:16,603 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:22:16,605 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:22:16,605 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:22:16,606 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:22:16,606 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:22:16,607 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:22:16,607 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:22:16,608 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:22:16,609 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:22:16,609 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:22:16,610 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:22:16,611 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:22:16,611 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:22:16,611 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:22:16,612 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:22:16,612 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:22:16,613 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:22:16,613 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:22:16,614 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_3caeaa0e-e203-44c6-ba5d-45d50aa588e5/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2019-10-22 11:22:16,625 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:22:16,626 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:22:16,626 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:22:16,626 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:22:16,627 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:22:16,627 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:22:16,627 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:22:16,627 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:22:16,627 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:22:16,628 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:22:16,628 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:22:16,628 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:22:16,628 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:22:16,628 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:22:16,629 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:22:16,629 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:22:16,629 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-10-22 11:22:16,629 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-10-22 11:22:16,629 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:22:16,629 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:22:16,629 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 11:22:16,630 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:22:16,630 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:22:16,630 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:22:16,630 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:22:16,630 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:22:16,630 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:22:16,631 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:22:16,631 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:22:16,631 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:22:16,631 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-10-22 11:22:16,631 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-10-22 11:22:16,631 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:22:16,631 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:22:16,632 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_3caeaa0e-e203-44c6-ba5d-45d50aa588e5/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 -> 209a5f451d4da606f6f89775a0cb8490169e98a1 [2019-10-22 11:22:16,658 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:22:16,668 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:22:16,671 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:22:16,672 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:22:16,672 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:22:16,673 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_3caeaa0e-e203-44c6-ba5d-45d50aa588e5/bin/utaipan/../../sv-benchmarks/c/product-lines/minepump_spec4_product46.cil.c [2019-10-22 11:22:16,719 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_3caeaa0e-e203-44c6-ba5d-45d50aa588e5/bin/utaipan/data/0d70ad5b2/9007d86704bf450f9a3b7eeb941d4c98/FLAG398978ad0 [2019-10-22 11:22:17,177 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:22:17,177 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_3caeaa0e-e203-44c6-ba5d-45d50aa588e5/sv-benchmarks/c/product-lines/minepump_spec4_product46.cil.c [2019-10-22 11:22:17,187 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_3caeaa0e-e203-44c6-ba5d-45d50aa588e5/bin/utaipan/data/0d70ad5b2/9007d86704bf450f9a3b7eeb941d4c98/FLAG398978ad0 [2019-10-22 11:22:17,693 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_3caeaa0e-e203-44c6-ba5d-45d50aa588e5/bin/utaipan/data/0d70ad5b2/9007d86704bf450f9a3b7eeb941d4c98 [2019-10-22 11:22:17,696 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:22:17,697 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:22:17,698 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:22:17,699 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:22:17,702 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:22:17,703 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:22:17" (1/1) ... [2019-10-22 11:22:17,708 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c5e49de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:17, skipping insertion in model container [2019-10-22 11:22:17,708 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:22:17" (1/1) ... [2019-10-22 11:22:17,715 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:22:17,769 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:22:18,072 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:22:18,154 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:22:18,249 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:22:18,280 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:22:18,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:18 WrapperNode [2019-10-22 11:22:18,280 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:22:18,281 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:22:18,281 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:22:18,281 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:22:18,289 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:18" (1/1) ... [2019-10-22 11:22:18,303 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:18" (1/1) ... [2019-10-22 11:22:18,343 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:22:18,344 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:22:18,344 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:22:18,344 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:22:18,353 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:18" (1/1) ... [2019-10-22 11:22:18,353 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:18" (1/1) ... [2019-10-22 11:22:18,358 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:18" (1/1) ... [2019-10-22 11:22:18,358 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:18" (1/1) ... [2019-10-22 11:22:18,370 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:18" (1/1) ... [2019-10-22 11:22:18,378 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:18" (1/1) ... [2019-10-22 11:22:18,381 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:18" (1/1) ... [2019-10-22 11:22:18,385 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:22:18,386 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:22:18,386 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:22:18,386 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:22:18,387 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:18" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3caeaa0e-e203-44c6-ba5d-45d50aa588e5/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 11:22:18,431 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 11:22:18,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2019-10-22 11:22:18,432 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:22:18,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:22:19,335 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:22:19,336 INFO L284 CfgBuilder]: Removed 194 assume(true) statements. [2019-10-22 11:22:19,337 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:22:19 BoogieIcfgContainer [2019-10-22 11:22:19,337 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:22:19,338 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:22:19,338 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:22:19,341 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:22:19,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:22:17" (1/3) ... [2019-10-22 11:22:19,342 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59fa0766 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:22:19, skipping insertion in model container [2019-10-22 11:22:19,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:18" (2/3) ... [2019-10-22 11:22:19,343 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59fa0766 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:22:19, skipping insertion in model container [2019-10-22 11:22:19,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:22:19" (3/3) ... [2019-10-22 11:22:19,345 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product46.cil.c [2019-10-22 11:22:19,354 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:22:19,364 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-10-22 11:22:19,375 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-10-22 11:22:19,403 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:22:19,403 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:22:19,403 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:22:19,403 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:22:19,404 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:22:19,404 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:22:19,404 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:22:19,404 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:22:19,424 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states. [2019-10-22 11:22:19,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-22 11:22:19,433 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:22:19,434 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:22:19,437 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:22:19,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:22:19,443 INFO L82 PathProgramCache]: Analyzing trace with hash -1027746333, now seen corresponding path program 1 times [2019-10-22 11:22:19,455 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:22:19,455 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1096796657] [2019-10-22 11:22:19,456 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3caeaa0e-e203-44c6-ba5d-45d50aa588e5/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 11:22:19,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:22:19,624 INFO L256 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 1 conjunts are in the unsatisfiable core [2019-10-22 11:22:19,629 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:22:19,643 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 11:22:19,643 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:22:19,648 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 11:22:19,650 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1096796657] [2019-10-22 11:22:19,651 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:22:19,651 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-10-22 11:22:19,651 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650479970] [2019-10-22 11:22:19,655 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-22 11:22:19,656 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:22:19,668 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-22 11:22:19,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 11:22:19,671 INFO L87 Difference]: Start difference. First operand 129 states. Second operand 2 states. [2019-10-22 11:22:19,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:22:19,709 INFO L93 Difference]: Finished difference Result 252 states and 377 transitions. [2019-10-22 11:22:19,709 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 11:22:19,710 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2019-10-22 11:22:19,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:22:19,725 INFO L225 Difference]: With dead ends: 252 [2019-10-22 11:22:19,727 INFO L226 Difference]: Without dead ends: 125 [2019-10-22 11:22:19,731 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 11:22:19,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2019-10-22 11:22:19,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2019-10-22 11:22:19,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2019-10-22 11:22:19,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 180 transitions. [2019-10-22 11:22:19,781 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 180 transitions. Word has length 16 [2019-10-22 11:22:19,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:22:19,782 INFO L462 AbstractCegarLoop]: Abstraction has 125 states and 180 transitions. [2019-10-22 11:22:19,782 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-22 11:22:19,782 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 180 transitions. [2019-10-22 11:22:19,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-22 11:22:19,783 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:22:19,783 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 11:22:19,984 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:22:19,984 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:22:19,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:22:19,985 INFO L82 PathProgramCache]: Analyzing trace with hash -2074503230, now seen corresponding path program 1 times [2019-10-22 11:22:19,985 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:22:19,985 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [763445864] [2019-10-22 11:22:19,986 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3caeaa0e-e203-44c6-ba5d-45d50aa588e5/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 11:22:20,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:22:20,122 INFO L256 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 11:22:20,123 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:22:20,144 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 11:22:20,145 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:22:20,151 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 11:22:20,152 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [763445864] [2019-10-22 11:22:20,152 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:22:20,152 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2019-10-22 11:22:20,152 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211803575] [2019-10-22 11:22:20,154 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 11:22:20,154 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:22:20,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 11:22:20,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-22 11:22:20,155 INFO L87 Difference]: Start difference. First operand 125 states and 180 transitions. Second operand 4 states. [2019-10-22 11:22:20,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:22:20,189 INFO L93 Difference]: Finished difference Result 244 states and 354 transitions. [2019-10-22 11:22:20,190 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:22:20,190 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2019-10-22 11:22:20,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:22:20,191 INFO L225 Difference]: With dead ends: 244 [2019-10-22 11:22:20,191 INFO L226 Difference]: Without dead ends: 125 [2019-10-22 11:22:20,192 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 11:22:20,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2019-10-22 11:22:20,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2019-10-22 11:22:20,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2019-10-22 11:22:20,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 177 transitions. [2019-10-22 11:22:20,207 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 177 transitions. Word has length 17 [2019-10-22 11:22:20,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:22:20,207 INFO L462 AbstractCegarLoop]: Abstraction has 125 states and 177 transitions. [2019-10-22 11:22:20,207 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 11:22:20,207 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 177 transitions. [2019-10-22 11:22:20,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-10-22 11:22:20,208 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:22:20,209 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 11:22:20,409 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:22:20,409 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:22:20,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:22:20,410 INFO L82 PathProgramCache]: Analyzing trace with hash 1059961152, now seen corresponding path program 1 times [2019-10-22 11:22:20,410 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:22:20,411 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1859594422] [2019-10-22 11:22:20,411 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3caeaa0e-e203-44c6-ba5d-45d50aa588e5/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 11:22:20,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:22:20,548 INFO L256 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 11:22:20,549 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:22:20,556 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 11:22:20,556 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:22:20,558 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 11:22:20,558 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1859594422] [2019-10-22 11:22:20,558 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:22:20,559 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-10-22 11:22:20,559 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216256328] [2019-10-22 11:22:20,559 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:22:20,559 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:22:20,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:22:20,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:22:20,561 INFO L87 Difference]: Start difference. First operand 125 states and 177 transitions. Second operand 3 states. [2019-10-22 11:22:20,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:22:20,725 INFO L93 Difference]: Finished difference Result 291 states and 411 transitions. [2019-10-22 11:22:20,726 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:22:20,726 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2019-10-22 11:22:20,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:22:20,727 INFO L225 Difference]: With dead ends: 291 [2019-10-22 11:22:20,727 INFO L226 Difference]: Without dead ends: 172 [2019-10-22 11:22:20,728 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 11:22:20,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2019-10-22 11:22:20,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 166. [2019-10-22 11:22:20,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2019-10-22 11:22:20,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 228 transitions. [2019-10-22 11:22:20,763 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 228 transitions. Word has length 19 [2019-10-22 11:22:20,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:22:20,763 INFO L462 AbstractCegarLoop]: Abstraction has 166 states and 228 transitions. [2019-10-22 11:22:20,763 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:22:20,763 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 228 transitions. [2019-10-22 11:22:20,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-10-22 11:22:20,764 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:22:20,764 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 11:22:20,965 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:22:20,965 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:22:20,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:22:20,966 INFO L82 PathProgramCache]: Analyzing trace with hash -1468332428, now seen corresponding path program 1 times [2019-10-22 11:22:20,966 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:22:20,966 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [490621574] [2019-10-22 11:22:20,967 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3caeaa0e-e203-44c6-ba5d-45d50aa588e5/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 11:22:21,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:22:21,100 INFO L256 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-22 11:22:21,102 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:22:21,127 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 11:22:21,128 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:22:21,166 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 11:22:21,166 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [490621574] [2019-10-22 11:22:21,166 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:22:21,167 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2019-10-22 11:22:21,167 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793189123] [2019-10-22 11:22:21,167 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-22 11:22:21,167 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:22:21,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 11:22:21,170 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-10-22 11:22:21,170 INFO L87 Difference]: Start difference. First operand 166 states and 228 transitions. Second operand 8 states. [2019-10-22 11:22:21,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:22:21,740 INFO L93 Difference]: Finished difference Result 1156 states and 1620 transitions. [2019-10-22 11:22:21,741 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-22 11:22:21,741 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2019-10-22 11:22:21,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:22:21,745 INFO L225 Difference]: With dead ends: 1156 [2019-10-22 11:22:21,746 INFO L226 Difference]: Without dead ends: 996 [2019-10-22 11:22:21,747 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2019-10-22 11:22:21,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 996 states. [2019-10-22 11:22:21,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 996 to 403. [2019-10-22 11:22:21,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2019-10-22 11:22:21,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 540 transitions. [2019-10-22 11:22:21,821 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 540 transitions. Word has length 25 [2019-10-22 11:22:21,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:22:21,821 INFO L462 AbstractCegarLoop]: Abstraction has 403 states and 540 transitions. [2019-10-22 11:22:21,821 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-22 11:22:21,821 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 540 transitions. [2019-10-22 11:22:21,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-10-22 11:22:21,825 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:22:21,825 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:22:22,025 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:22:22,026 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:22:22,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:22:22,026 INFO L82 PathProgramCache]: Analyzing trace with hash -536728730, now seen corresponding path program 1 times [2019-10-22 11:22:22,027 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:22:22,027 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1998407277] [2019-10-22 11:22:22,027 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3caeaa0e-e203-44c6-ba5d-45d50aa588e5/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 11:22:22,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:22:22,192 INFO L256 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-22 11:22:22,194 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:22:22,215 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 11:22:22,215 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:22:22,219 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 11:22:22,221 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1998407277] [2019-10-22 11:22:22,222 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:22:22,222 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-10-22 11:22:22,222 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687034776] [2019-10-22 11:22:22,222 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:22:22,222 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:22:22,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:22:22,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:22:22,223 INFO L87 Difference]: Start difference. First operand 403 states and 540 transitions. Second operand 5 states. [2019-10-22 11:22:22,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:22:22,404 INFO L93 Difference]: Finished difference Result 1086 states and 1419 transitions. [2019-10-22 11:22:22,405 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 11:22:22,405 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 42 [2019-10-22 11:22:22,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:22:22,407 INFO L225 Difference]: With dead ends: 1086 [2019-10-22 11:22:22,407 INFO L226 Difference]: Without dead ends: 689 [2019-10-22 11:22:22,409 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 81 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 11:22:22,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2019-10-22 11:22:22,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 448. [2019-10-22 11:22:22,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 448 states. [2019-10-22 11:22:22,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448 states to 448 states and 585 transitions. [2019-10-22 11:22:22,451 INFO L78 Accepts]: Start accepts. Automaton has 448 states and 585 transitions. Word has length 42 [2019-10-22 11:22:22,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:22:22,452 INFO L462 AbstractCegarLoop]: Abstraction has 448 states and 585 transitions. [2019-10-22 11:22:22,453 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:22:22,453 INFO L276 IsEmpty]: Start isEmpty. Operand 448 states and 585 transitions. [2019-10-22 11:22:22,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2019-10-22 11:22:22,454 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:22:22,454 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:22:22,659 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:22:22,659 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:22:22,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:22:22,660 INFO L82 PathProgramCache]: Analyzing trace with hash 1386499304, now seen corresponding path program 1 times [2019-10-22 11:22:22,661 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:22:22,661 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [292626912] [2019-10-22 11:22:22,661 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3caeaa0e-e203-44c6-ba5d-45d50aa588e5/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 11:22:22,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:22:22,801 INFO L256 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-22 11:22:22,803 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:22:22,813 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 11:22:22,814 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:22:22,838 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 11:22:22,838 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [292626912] [2019-10-22 11:22:22,838 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:22:22,838 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-10-22 11:22:22,839 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580246596] [2019-10-22 11:22:22,839 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 11:22:22,839 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:22:22,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 11:22:22,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-22 11:22:22,839 INFO L87 Difference]: Start difference. First operand 448 states and 585 transitions. Second operand 6 states. [2019-10-22 11:22:22,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:22:22,998 INFO L93 Difference]: Finished difference Result 989 states and 1275 transitions. [2019-10-22 11:22:22,998 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 11:22:22,999 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 42 [2019-10-22 11:22:22,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:22:23,000 INFO L225 Difference]: With dead ends: 989 [2019-10-22 11:22:23,000 INFO L226 Difference]: Without dead ends: 510 [2019-10-22 11:22:23,001 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 79 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 11:22:23,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2019-10-22 11:22:23,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 342. [2019-10-22 11:22:23,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 342 states. [2019-10-22 11:22:23,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 442 transitions. [2019-10-22 11:22:23,031 INFO L78 Accepts]: Start accepts. Automaton has 342 states and 442 transitions. Word has length 42 [2019-10-22 11:22:23,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:22:23,031 INFO L462 AbstractCegarLoop]: Abstraction has 342 states and 442 transitions. [2019-10-22 11:22:23,031 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 11:22:23,031 INFO L276 IsEmpty]: Start isEmpty. Operand 342 states and 442 transitions. [2019-10-22 11:22:23,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2019-10-22 11:22:23,034 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:22:23,034 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:22:23,235 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:22:23,235 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:22:23,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:22:23,236 INFO L82 PathProgramCache]: Analyzing trace with hash -2077750251, now seen corresponding path program 1 times [2019-10-22 11:22:23,236 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:22:23,236 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1902321700] [2019-10-22 11:22:23,236 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3caeaa0e-e203-44c6-ba5d-45d50aa588e5/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 11:22:23,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:22:23,372 INFO L256 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 11:22:23,373 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:22:23,390 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 11:22:23,390 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:22:23,397 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 11:22:23,398 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1902321700] [2019-10-22 11:22:23,398 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:22:23,398 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-10-22 11:22:23,398 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450883173] [2019-10-22 11:22:23,399 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:22:23,399 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:22:23,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:22:23,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:22:23,399 INFO L87 Difference]: Start difference. First operand 342 states and 442 transitions. Second operand 3 states. [2019-10-22 11:22:23,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:22:23,422 INFO L93 Difference]: Finished difference Result 342 states and 442 transitions. [2019-10-22 11:22:23,423 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:22:23,423 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 47 [2019-10-22 11:22:23,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:22:23,425 INFO L225 Difference]: With dead ends: 342 [2019-10-22 11:22:23,425 INFO L226 Difference]: Without dead ends: 154 [2019-10-22 11:22:23,426 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 91 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 11:22:23,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2019-10-22 11:22:23,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 154. [2019-10-22 11:22:23,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2019-10-22 11:22:23,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 204 transitions. [2019-10-22 11:22:23,440 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 204 transitions. Word has length 47 [2019-10-22 11:22:23,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:22:23,440 INFO L462 AbstractCegarLoop]: Abstraction has 154 states and 204 transitions. [2019-10-22 11:22:23,440 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:22:23,441 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 204 transitions. [2019-10-22 11:22:23,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2019-10-22 11:22:23,442 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:22:23,442 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:22:23,643 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:22:23,643 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:22:23,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:22:23,644 INFO L82 PathProgramCache]: Analyzing trace with hash 1981323655, now seen corresponding path program 1 times [2019-10-22 11:22:23,644 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:22:23,644 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1030396633] [2019-10-22 11:22:23,644 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3caeaa0e-e203-44c6-ba5d-45d50aa588e5/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 11:22:23,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:22:23,792 INFO L256 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-22 11:22:23,794 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:22:23,831 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 11:22:23,831 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:22:23,837 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 11:22:23,837 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1030396633] [2019-10-22 11:22:23,838 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:22:23,838 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-10-22 11:22:23,838 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779390434] [2019-10-22 11:22:23,838 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 11:22:23,838 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:22:23,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 11:22:23,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-22 11:22:23,839 INFO L87 Difference]: Start difference. First operand 154 states and 204 transitions. Second operand 6 states. [2019-10-22 11:22:24,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:22:24,017 INFO L93 Difference]: Finished difference Result 756 states and 1034 transitions. [2019-10-22 11:22:24,018 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-22 11:22:24,018 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 52 [2019-10-22 11:22:24,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:22:24,020 INFO L225 Difference]: With dead ends: 756 [2019-10-22 11:22:24,020 INFO L226 Difference]: Without dead ends: 608 [2019-10-22 11:22:24,021 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 98 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2019-10-22 11:22:24,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2019-10-22 11:22:24,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 300. [2019-10-22 11:22:24,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 300 states. [2019-10-22 11:22:24,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 394 transitions. [2019-10-22 11:22:24,062 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 394 transitions. Word has length 52 [2019-10-22 11:22:24,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:22:24,063 INFO L462 AbstractCegarLoop]: Abstraction has 300 states and 394 transitions. [2019-10-22 11:22:24,063 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 11:22:24,063 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 394 transitions. [2019-10-22 11:22:24,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-10-22 11:22:24,064 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:22:24,065 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:22:24,265 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:22:24,266 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:22:24,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:22:24,266 INFO L82 PathProgramCache]: Analyzing trace with hash 1599009123, now seen corresponding path program 1 times [2019-10-22 11:22:24,266 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:22:24,267 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1537251468] [2019-10-22 11:22:24,267 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3caeaa0e-e203-44c6-ba5d-45d50aa588e5/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 11:22:24,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:22:24,410 INFO L256 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-22 11:22:24,412 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:22:24,436 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-22 11:22:24,437 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:22:24,442 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-22 11:22:24,443 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1537251468] [2019-10-22 11:22:24,443 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:22:24,443 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-10-22 11:22:24,443 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92744947] [2019-10-22 11:22:24,444 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:22:24,444 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:22:24,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:22:24,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:22:24,445 INFO L87 Difference]: Start difference. First operand 300 states and 394 transitions. Second operand 5 states. [2019-10-22 11:22:24,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:22:24,670 INFO L93 Difference]: Finished difference Result 800 states and 1059 transitions. [2019-10-22 11:22:24,671 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-22 11:22:24,671 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 53 [2019-10-22 11:22:24,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:22:24,674 INFO L225 Difference]: With dead ends: 800 [2019-10-22 11:22:24,674 INFO L226 Difference]: Without dead ends: 798 [2019-10-22 11:22:24,675 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 104 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 11:22:24,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 798 states. [2019-10-22 11:22:24,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 798 to 300. [2019-10-22 11:22:24,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 300 states. [2019-10-22 11:22:24,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 392 transitions. [2019-10-22 11:22:24,712 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 392 transitions. Word has length 53 [2019-10-22 11:22:24,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:22:24,712 INFO L462 AbstractCegarLoop]: Abstraction has 300 states and 392 transitions. [2019-10-22 11:22:24,712 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:22:24,712 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 392 transitions. [2019-10-22 11:22:24,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2019-10-22 11:22:24,713 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:22:24,714 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:22:24,914 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:22:24,914 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:22:24,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:22:24,915 INFO L82 PathProgramCache]: Analyzing trace with hash 596801484, now seen corresponding path program 1 times [2019-10-22 11:22:24,915 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:22:24,915 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [590818332] [2019-10-22 11:22:24,915 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3caeaa0e-e203-44c6-ba5d-45d50aa588e5/bin/utaipan/cvc4 Starting monitored process 11 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:22:25,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:22:25,044 INFO L256 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-22 11:22:25,045 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:22:25,077 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 11:22:25,077 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:22:25,118 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 11:22:25,119 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [590818332] [2019-10-22 11:22:25,120 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552930318] [2019-10-22 11:22:25,120 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3caeaa0e-e203-44c6-ba5d-45d50aa588e5/bin/utaipan/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:22:25,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:22:25,238 INFO L256 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-22 11:22:25,239 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:22:25,266 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 11:22:25,268 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:22:25,277 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 11:22:25,278 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-22 11:22:25,279 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5] total 9 [2019-10-22 11:22:25,279 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647546649] [2019-10-22 11:22:25,279 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-22 11:22:25,279 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:22:25,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-22 11:22:25,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-10-22 11:22:25,280 INFO L87 Difference]: Start difference. First operand 300 states and 392 transitions. Second operand 10 states. [2019-10-22 11:22:26,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:22:26,125 INFO L93 Difference]: Finished difference Result 1973 states and 2625 transitions. [2019-10-22 11:22:26,125 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-10-22 11:22:26,125 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 53 [2019-10-22 11:22:26,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:22:26,131 INFO L225 Difference]: With dead ends: 1973 [2019-10-22 11:22:26,131 INFO L226 Difference]: Without dead ends: 1727 [2019-10-22 11:22:26,133 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 226 GetRequests, 198 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=198, Invalid=558, Unknown=0, NotChecked=0, Total=756 [2019-10-22 11:22:26,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1727 states. [2019-10-22 11:22:26,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1727 to 538. [2019-10-22 11:22:26,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 538 states. [2019-10-22 11:22:26,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 538 states to 538 states and 714 transitions. [2019-10-22 11:22:26,193 INFO L78 Accepts]: Start accepts. Automaton has 538 states and 714 transitions. Word has length 53 [2019-10-22 11:22:26,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:22:26,194 INFO L462 AbstractCegarLoop]: Abstraction has 538 states and 714 transitions. [2019-10-22 11:22:26,194 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-22 11:22:26,194 INFO L276 IsEmpty]: Start isEmpty. Operand 538 states and 714 transitions. [2019-10-22 11:22:26,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2019-10-22 11:22:26,195 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:22:26,195 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:22:26,595 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,11 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:22:26,596 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:22:26,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:22:26,596 INFO L82 PathProgramCache]: Analyzing trace with hash -1994887391, now seen corresponding path program 2 times [2019-10-22 11:22:26,596 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:22:26,596 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [870042119] [2019-10-22 11:22:26,597 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3caeaa0e-e203-44c6-ba5d-45d50aa588e5/bin/utaipan/cvc4 Starting monitored process 13 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:22:28,301 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-10-22 11:22:28,301 INFO L250 tOrderPrioritization]: Conjunction of SSA is sat [2019-10-22 11:22:30,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 11:22:30,263 INFO L168 tionRefinementEngine]: Strategy WALRUS found a feasible trace [2019-10-22 11:22:30,263 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-22 11:22:30,464 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:22:30,610 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 11:22:30 BoogieIcfgContainer [2019-10-22 11:22:30,610 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 11:22:30,611 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 11:22:30,611 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 11:22:30,611 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 11:22:30,611 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:22:19" (3/4) ... [2019-10-22 11:22:30,613 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-10-22 11:22:30,764 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_3caeaa0e-e203-44c6-ba5d-45d50aa588e5/bin/utaipan/witness.graphml [2019-10-22 11:22:30,764 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 11:22:30,766 INFO L168 Benchmark]: Toolchain (without parser) took 13068.41 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 286.3 MB). Free memory was 951.0 MB in the beginning and 835.7 MB in the end (delta: 115.3 MB). Peak memory consumption was 401.6 MB. Max. memory is 11.5 GB. [2019-10-22 11:22:30,766 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 977.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:22:30,767 INFO L168 Benchmark]: CACSL2BoogieTranslator took 582.04 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.8 MB). Free memory was 945.6 MB in the beginning and 1.1 GB in the end (delta: -187.0 MB). Peak memory consumption was 24.6 MB. Max. memory is 11.5 GB. [2019-10-22 11:22:30,767 INFO L168 Benchmark]: Boogie Procedure Inliner took 62.45 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 11:22:30,767 INFO L168 Benchmark]: Boogie Preprocessor took 41.87 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 11:22:30,768 INFO L168 Benchmark]: RCFGBuilder took 951.40 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 76.4 MB). Peak memory consumption was 76.4 MB. Max. memory is 11.5 GB. [2019-10-22 11:22:30,768 INFO L168 Benchmark]: TraceAbstraction took 11272.16 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 129.5 MB). Free memory was 1.0 GB in the beginning and 869.8 MB in the end (delta: 179.9 MB). Peak memory consumption was 309.4 MB. Max. memory is 11.5 GB. [2019-10-22 11:22:30,768 INFO L168 Benchmark]: Witness Printer took 153.73 ms. Allocated memory is still 1.3 GB. Free memory was 869.8 MB in the beginning and 835.7 MB in the end (delta: 34.1 MB). Peak memory consumption was 34.1 MB. Max. memory is 11.5 GB. [2019-10-22 11:22:30,770 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 977.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 582.04 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 156.8 MB). Free memory was 945.6 MB in the beginning and 1.1 GB in the end (delta: -187.0 MB). Peak memory consumption was 24.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 62.45 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 41.87 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 951.40 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 76.4 MB). Peak memory consumption was 76.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 11272.16 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 129.5 MB). Free memory was 1.0 GB in the beginning and 869.8 MB in the end (delta: 179.9 MB). Peak memory consumption was 309.4 MB. Max. memory is 11.5 GB. * Witness Printer took 153.73 ms. Allocated memory is still 1.3 GB. Free memory was 869.8 MB in the beginning and 835.7 MB in the end (delta: 34.1 MB). Peak memory consumption was 34.1 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 543]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L40] int cleanupTimeShifts = 4; [L342] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L555] int pumpRunning = 0; [L556] int systemActive = 1; [L758] int waterLevel = 1; [L759] int methaneLevelCritical = 0; [L121] int retValue_acc ; [L122] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L945] int retValue_acc ; [L948] retValue_acc = 1 [L949] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L128] tmp = valid_product() [L130] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L853] int splverifierCounter ; [L854] int tmp ; [L855] int tmp___0 ; [L856] int tmp___1 ; [L857] int tmp___2 ; [L860] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L862] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L864] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L870] tmp = __VERIFIER_nondet_int() [L872] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L776] COND TRUE waterLevel < 2 [L777] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L880] tmp___0 = __VERIFIER_nondet_int() [L882] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L890] tmp___2 = __VERIFIER_nondet_int() [L892] COND TRUE \read(tmp___2) [L753] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L562] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L569] COND TRUE \read(systemActive) [L617] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L620] COND FALSE !(\read(pumpRunning)) [L591] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L594] COND TRUE ! pumpRunning [L731] int retValue_acc ; [L732] int tmp ; [L733] int tmp___0 ; [L838] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L841] COND FALSE !(waterLevel < 2) [L845] retValue_acc = 0 [L846] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L737] tmp = isHighWaterSensorDry() [L739] COND FALSE !(\read(tmp)) [L742] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L744] retValue_acc = tmp___0 [L745] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L596] tmp = isHighWaterLevel() [L598] COND TRUE \read(tmp) [L650] int tmp ; [L675] int retValue_acc ; [L797] int retValue_acc ; [L800] retValue_acc = methaneLevelCritical [L801] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L679] retValue_acc = isMethaneLevelCritical() [L681] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L654] tmp = isMethaneAlarm() [L656] COND FALSE !(\read(tmp)) [L645] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L148] int tmp ; [L149] int tmp___0 ; [L829] int retValue_acc ; [L832] retValue_acc = waterLevel [L833] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L153] tmp = getWaterLevel() [L155] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L862] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L864] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L870] tmp = __VERIFIER_nondet_int() [L872] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L880] tmp___0 = __VERIFIER_nondet_int() [L882] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L890] tmp___2 = __VERIFIER_nondet_int() [L892] COND TRUE \read(tmp___2) [L753] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L562] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L764] COND TRUE waterLevel > 0 [L765] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L569] COND TRUE \read(systemActive) [L617] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L620] COND TRUE \read(pumpRunning) [L675] int retValue_acc ; [L797] int retValue_acc ; [L800] retValue_acc = methaneLevelCritical [L801] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L679] retValue_acc = isMethaneLevelCritical() [L681] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L622] tmp = isMethaneAlarm() [L624] COND FALSE !(\read(tmp)) [L591] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L594] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L148] int tmp ; [L149] int tmp___0 ; [L829] int retValue_acc ; [L832] retValue_acc = waterLevel [L833] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L153] tmp = getWaterLevel() [L155] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L862] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L864] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L870] tmp = __VERIFIER_nondet_int() [L872] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L880] tmp___0 = __VERIFIER_nondet_int() [L882] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L890] tmp___2 = __VERIFIER_nondet_int() [L892] COND TRUE \read(tmp___2) [L753] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L562] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L764] COND TRUE waterLevel > 0 [L765] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L569] COND TRUE \read(systemActive) [L617] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L620] COND TRUE \read(pumpRunning) [L675] int retValue_acc ; [L797] int retValue_acc ; [L800] retValue_acc = methaneLevelCritical [L801] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L679] retValue_acc = isMethaneLevelCritical() [L681] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L622] tmp = isMethaneAlarm() [L624] COND FALSE !(\read(tmp)) [L591] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L594] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L148] int tmp ; [L149] int tmp___0 ; [L829] int retValue_acc ; [L832] retValue_acc = waterLevel [L833] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L153] tmp = getWaterLevel() [L155] COND TRUE tmp == 0 [L686] int retValue_acc ; [L689] retValue_acc = pumpRunning [L690] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L157] tmp___0 = isPumpRunning() [L159] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L543] __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, 129 locations, 3 error locations. Result: UNSAFE, OverallTime: 11.2s, OverallIterations: 11, TraceHistogramMax: 3, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 1718 SDtfs, 4264 SDslu, 3968 SDs, 0 SdLazy, 701 SolverSat, 229 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 862 GetRequests, 788 SyntacticMatches, 2 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=538occurred in iteration=10, 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, 10 MinimizatonAttempts, 3003 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 2.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 491 NumberOfCodeBlocks, 491 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 816 ConstructedInterpolants, 0 QuantifiedInterpolants, 92476 SizeOfPredicates, 29 NumberOfNonLiveVariables, 2278 ConjunctsInSsa, 49 ConjunctsInUnsatCore, 22 InterpolantComputations, 18 PerfectInterpolantSequences, 96/132 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...