./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product39.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_efca80d9-463d-457b-ac73-88b56aef9159/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_efca80d9-463d-457b-ac73-88b56aef9159/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_efca80d9-463d-457b-ac73-88b56aef9159/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_efca80d9-463d-457b-ac73-88b56aef9159/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product39.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_efca80d9-463d-457b-ac73-88b56aef9159/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_efca80d9-463d-457b-ac73-88b56aef9159/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 c228d9f74ddd17cda7010ca670107d7221f92470 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.1.24-6b5699a [2019-11-26 02:53:14,192 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:53:14,193 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:53:14,203 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:53:14,204 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:53:14,205 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:53:14,206 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:53:14,208 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:53:14,210 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:53:14,210 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:53:14,211 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:53:14,212 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:53:14,213 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:53:14,214 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:53:14,214 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:53:14,216 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:53:14,216 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:53:14,217 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:53:14,219 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:53:14,221 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:53:14,223 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:53:14,224 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:53:14,225 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:53:14,226 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:53:14,228 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:53:14,229 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:53:14,229 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:53:14,230 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:53:14,230 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:53:14,231 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:53:14,231 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:53:14,232 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:53:14,232 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:53:14,233 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:53:14,234 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:53:14,234 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:53:14,235 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:53:14,235 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:53:14,235 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:53:14,236 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:53:14,237 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:53:14,237 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_efca80d9-463d-457b-ac73-88b56aef9159/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-26 02:53:14,250 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:53:14,250 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:53:14,251 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:53:14,251 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:53:14,251 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:53:14,252 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:53:14,252 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-26 02:53:14,252 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:53:14,252 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:53:14,252 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-26 02:53:14,253 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-26 02:53:14,253 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:53:14,253 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-26 02:53:14,253 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-26 02:53:14,253 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-26 02:53:14,254 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:53:14,254 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:53:14,254 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 02:53:14,254 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:53:14,255 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:53:14,255 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:53:14,255 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:53:14,255 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:53:14,255 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:53:14,255 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:53:14,256 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:53:14,256 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:53:14,256 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:53:14,256 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:53:14,256 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:53:14,257 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:53:14,257 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:53:14,257 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:53:14,257 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-26 02:53:14,257 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-26 02:53:14,257 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:53:14,258 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:53:14,258 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/run_dir_efca80d9-463d-457b-ac73-88b56aef9159/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 -> c228d9f74ddd17cda7010ca670107d7221f92470 [2019-11-26 02:53:14,389 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:53:14,399 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:53:14,402 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:53:14,403 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:53:14,403 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:53:14,404 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_efca80d9-463d-457b-ac73-88b56aef9159/bin/utaipan/../../sv-benchmarks/c/product-lines/minepump_spec4_product39.cil.c [2019-11-26 02:53:14,453 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_efca80d9-463d-457b-ac73-88b56aef9159/bin/utaipan/data/01eff7355/49ba0f0f35414d5386226a582c9c15b6/FLAG1305305a9 [2019-11-26 02:53:14,948 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:53:14,951 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_efca80d9-463d-457b-ac73-88b56aef9159/sv-benchmarks/c/product-lines/minepump_spec4_product39.cil.c [2019-11-26 02:53:14,961 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_efca80d9-463d-457b-ac73-88b56aef9159/bin/utaipan/data/01eff7355/49ba0f0f35414d5386226a582c9c15b6/FLAG1305305a9 [2019-11-26 02:53:15,421 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_efca80d9-463d-457b-ac73-88b56aef9159/bin/utaipan/data/01eff7355/49ba0f0f35414d5386226a582c9c15b6 [2019-11-26 02:53:15,424 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:53:15,425 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:53:15,426 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:53:15,426 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:53:15,429 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:53:15,429 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:53:15" (1/1) ... [2019-11-26 02:53:15,436 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@566abe8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:53:15, skipping insertion in model container [2019-11-26 02:53:15,436 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:53:15" (1/1) ... [2019-11-26 02:53:15,442 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:53:15,502 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:53:15,836 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:53:15,847 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:53:15,971 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:53:16,019 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:53:16,019 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:53:16 WrapperNode [2019-11-26 02:53:16,020 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:53:16,020 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:53:16,021 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:53:16,021 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:53:16,028 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:53:16" (1/1) ... [2019-11-26 02:53:16,046 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:53:16" (1/1) ... [2019-11-26 02:53:16,087 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:53:16,088 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:53:16,088 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:53:16,088 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:53:16,097 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:53:16" (1/1) ... [2019-11-26 02:53:16,097 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:53:16" (1/1) ... [2019-11-26 02:53:16,102 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:53:16" (1/1) ... [2019-11-26 02:53:16,102 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:53:16" (1/1) ... [2019-11-26 02:53:16,114 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:53:16" (1/1) ... [2019-11-26 02:53:16,122 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:53:16" (1/1) ... [2019-11-26 02:53:16,126 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:53:16" (1/1) ... [2019-11-26 02:53:16,130 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:53:16,131 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:53:16,131 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:53:16,131 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:53:16,132 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:53:16" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_efca80d9-463d-457b-ac73-88b56aef9159/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 [2019-11-26 02:53:16,194 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-26 02:53:16,195 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-26 02:53:16,195 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:53:16,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:53:18,286 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:53:18,286 INFO L284 CfgBuilder]: Removed 160 assume(true) statements. [2019-11-26 02:53:18,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:53:18 BoogieIcfgContainer [2019-11-26 02:53:18,288 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:53:18,289 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:53:18,289 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:53:18,293 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:53:18,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:53:15" (1/3) ... [2019-11-26 02:53:18,295 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@758b12b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:53:18, skipping insertion in model container [2019-11-26 02:53:18,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:53:16" (2/3) ... [2019-11-26 02:53:18,296 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@758b12b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:53:18, skipping insertion in model container [2019-11-26 02:53:18,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:53:18" (3/3) ... [2019-11-26 02:53:18,301 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product39.cil.c [2019-11-26 02:53:18,310 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:53:18,317 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-11-26 02:53:18,329 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-11-26 02:53:18,359 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:53:18,359 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:53:18,359 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:53:18,359 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:53:18,360 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:53:18,360 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:53:18,360 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:53:18,360 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:53:18,379 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2019-11-26 02:53:18,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-26 02:53:18,390 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:53:18,391 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:53:18,391 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:53:18,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:53:18,398 INFO L82 PathProgramCache]: Analyzing trace with hash 1230172584, now seen corresponding path program 1 times [2019-11-26 02:53:18,409 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:53:18,409 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674595108] [2019-11-26 02:53:18,410 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:53:18,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:53:18,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:53:18,829 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674595108] [2019-11-26 02:53:18,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:53:18,830 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-26 02:53:18,831 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974394693] [2019-11-26 02:53:18,835 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-26 02:53:18,835 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:53:18,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-26 02:53:18,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-26 02:53:18,849 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 5 states. [2019-11-26 02:53:19,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:53:19,033 INFO L93 Difference]: Finished difference Result 82 states and 117 transitions. [2019-11-26 02:53:19,033 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-26 02:53:19,034 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2019-11-26 02:53:19,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:53:19,043 INFO L225 Difference]: With dead ends: 82 [2019-11-26 02:53:19,043 INFO L226 Difference]: Without dead ends: 51 [2019-11-26 02:53:19,051 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2019-11-26 02:53:19,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2019-11-26 02:53:19,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 34. [2019-11-26 02:53:19,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-11-26 02:53:19,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 42 transitions. [2019-11-26 02:53:19,097 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 42 transitions. Word has length 7 [2019-11-26 02:53:19,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:53:19,098 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 42 transitions. [2019-11-26 02:53:19,098 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-26 02:53:19,098 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 42 transitions. [2019-11-26 02:53:19,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-26 02:53:19,100 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:53:19,100 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2019-11-26 02:53:19,101 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:53:19,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:53:19,101 INFO L82 PathProgramCache]: Analyzing trace with hash -768185785, now seen corresponding path program 1 times [2019-11-26 02:53:19,101 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:53:19,102 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638394919] [2019-11-26 02:53:19,102 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:53:19,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:53:19,339 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:53:19,339 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638394919] [2019-11-26 02:53:19,340 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1577851144] [2019-11-26 02:53:19,340 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_efca80d9-463d-457b-ac73-88b56aef9159/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 [2019-11-26 02:53:19,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:53:19,502 INFO L255 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 41 conjunts are in the unsatisfiable core [2019-11-26 02:53:19,509 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:53:19,550 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:19,552 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:19,771 WARN L192 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 60 [2019-11-26 02:53:19,914 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:19,922 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:19,928 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:19,940 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:19,942 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:19,955 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:19,958 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:19,961 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:19,964 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:19,968 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:19,971 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:19,974 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:19,981 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:19,984 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:19,989 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:19,996 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:19,999 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:20,001 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:20,011 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:20,013 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:20,016 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:20,027 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:20,032 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:20,035 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:20,038 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:20,042 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:20,043 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:20,046 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:20,050 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:20,053 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:20,062 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:20,066 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:20,074 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:20,078 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:20,079 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:20,080 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:20,082 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:20,085 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:20,091 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:20,095 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:20,106 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:20,115 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:20,116 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:20,124 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:20,126 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:20,129 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:20,139 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:20,145 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:20,158 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:20,160 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:20,166 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:20,171 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:20,174 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:20,175 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:20,180 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:20,181 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:20,184 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:20,185 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:20,188 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:20,190 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:20,191 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:20,194 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:20,196 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:20,199 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:20,202 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:20,206 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:20,208 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:20,211 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:20,212 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:20,214 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:20,215 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:20,216 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:20,223 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:20,225 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:20,228 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:20,231 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:20,235 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:20,238 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:20,241 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:20,243 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:20,244 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:20,246 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:20,247 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:20,396 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:53:20,397 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:53:20,420 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:20,427 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:20,430 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:20,433 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:20,436 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:20,436 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:20,441 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:20,443 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:20,444 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:20,447 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:20,448 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:20,449 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:20,452 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:20,454 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:20,454 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:20,457 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:20,458 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:20,459 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:20,460 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:20,461 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:20,461 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:20,462 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:20,464 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:20,465 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:20,574 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:20,578 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:20,580 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:20,580 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:20,587 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:20,588 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:20,590 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:20,591 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:20,594 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:20,595 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:20,595 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:53:20,621 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:53:20,621 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1765811149] [2019-11-26 02:53:20,646 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2019-11-26 02:53:20,646 INFO L166 IcfgInterpreter]: Building call graph [2019-11-26 02:53:20,654 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-26 02:53:20,662 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-26 02:53:20,663 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-26 02:53:28,654 WARN L192 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 476 [2019-11-26 02:53:30,383 WARN L192 SmtUtils]: Spent 415.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-11-26 02:53:30,518 WARN L192 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 484 [2019-11-26 02:53:31,179 WARN L192 SmtUtils]: Spent 552.00 ms on a formula simplification. DAG size of input: 623 DAG size of output: 597 [2019-11-26 02:53:32,406 WARN L192 SmtUtils]: Spent 331.00 ms on a formula simplification. DAG size of input: 780 DAG size of output: 778 [2019-11-26 02:53:34,153 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-26 02:53:36,151 WARN L192 SmtUtils]: Spent 1.90 s on a formula simplification. DAG size of input: 387 DAG size of output: 211 [2019-11-26 02:53:39,855 WARN L192 SmtUtils]: Spent 3.56 s on a formula simplification. DAG size of input: 484 DAG size of output: 429 [2019-11-26 02:53:40,805 WARN L192 SmtUtils]: Spent 891.00 ms on a formula simplification. DAG size of input: 200 DAG size of output: 149 [2019-11-26 02:53:41,681 WARN L192 SmtUtils]: Spent 821.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 147 [2019-11-26 02:53:44,160 WARN L192 SmtUtils]: Spent 2.37 s on a formula simplification. DAG size of input: 375 DAG size of output: 272 [2019-11-26 02:53:46,634 WARN L192 SmtUtils]: Spent 2.32 s on a formula simplification. DAG size of input: 385 DAG size of output: 219 [2019-11-26 02:53:46,637 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-26 02:53:46,638 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-11-26 02:53:46,638 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 14 [2019-11-26 02:53:46,638 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658640306] [2019-11-26 02:53:46,639 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-11-26 02:53:46,639 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:53:46,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-11-26 02:53:46,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=324, Unknown=0, NotChecked=0, Total=420 [2019-11-26 02:53:46,640 INFO L87 Difference]: Start difference. First operand 34 states and 42 transitions. Second operand 15 states. [2019-11-26 02:53:47,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:53:47,523 INFO L93 Difference]: Finished difference Result 110 states and 138 transitions. [2019-11-26 02:53:47,523 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2019-11-26 02:53:47,523 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 10 [2019-11-26 02:53:47,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:53:47,525 INFO L225 Difference]: With dead ends: 110 [2019-11-26 02:53:47,525 INFO L226 Difference]: Without dead ends: 85 [2019-11-26 02:53:47,528 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 13.6s TimeCoverageRelationStatistics Valid=180, Invalid=576, Unknown=0, NotChecked=0, Total=756 [2019-11-26 02:53:47,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2019-11-26 02:53:47,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 52. [2019-11-26 02:53:47,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2019-11-26 02:53:47,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 66 transitions. [2019-11-26 02:53:47,546 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 66 transitions. Word has length 10 [2019-11-26 02:53:47,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:53:47,546 INFO L462 AbstractCegarLoop]: Abstraction has 52 states and 66 transitions. [2019-11-26 02:53:47,546 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-11-26 02:53:47,547 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 66 transitions. [2019-11-26 02:53:47,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-26 02:53:47,549 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:53:47,550 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1] [2019-11-26 02:53:47,755 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:53:47,755 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:53:47,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:53:47,756 INFO L82 PathProgramCache]: Analyzing trace with hash -1320666808, now seen corresponding path program 2 times [2019-11-26 02:53:47,757 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:53:47,757 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029198965] [2019-11-26 02:53:47,757 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:53:47,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 02:53:48,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 02:53:48,134 INFO L174 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2019-11-26 02:53:48,136 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-26 02:53:48,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 02:53:48 BoogieIcfgContainer [2019-11-26 02:53:48,238 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 02:53:48,238 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:53:48,238 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:53:48,238 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:53:48,239 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:53:18" (3/4) ... [2019-11-26 02:53:48,241 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-26 02:53:48,352 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_efca80d9-463d-457b-ac73-88b56aef9159/bin/utaipan/witness.graphml [2019-11-26 02:53:48,352 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:53:48,353 INFO L168 Benchmark]: Toolchain (without parser) took 32928.52 ms. Allocated memory was 1.0 GB in the beginning and 1.7 GB in the end (delta: 639.6 MB). Free memory was 951.4 MB in the beginning and 1.2 GB in the end (delta: -204.3 MB). Peak memory consumption was 435.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:53:48,353 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:53:48,354 INFO L168 Benchmark]: CACSL2BoogieTranslator took 594.26 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.1 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -178.8 MB). Peak memory consumption was 17.7 MB. Max. memory is 11.5 GB. [2019-11-26 02:53:48,354 INFO L168 Benchmark]: Boogie Procedure Inliner took 67.19 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. [2019-11-26 02:53:48,354 INFO L168 Benchmark]: Boogie Preprocessor took 42.62 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. [2019-11-26 02:53:48,355 INFO L168 Benchmark]: RCFGBuilder took 2157.18 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 891.0 MB in the end (delta: 228.5 MB). Peak memory consumption was 228.5 MB. Max. memory is 11.5 GB. [2019-11-26 02:53:48,355 INFO L168 Benchmark]: TraceAbstraction took 29948.90 ms. Allocated memory was 1.2 GB in the beginning and 1.7 GB in the end (delta: 497.5 MB). Free memory was 891.0 MB in the beginning and 1.2 GB in the end (delta: -283.6 MB). Peak memory consumption was 213.9 MB. Max. memory is 11.5 GB. [2019-11-26 02:53:48,355 INFO L168 Benchmark]: Witness Printer took 113.98 ms. Allocated memory is still 1.7 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 11.5 GB. [2019-11-26 02:53:48,357 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 594.26 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.1 MB). Free memory was 946.1 MB in the beginning and 1.1 GB in the end (delta: -178.8 MB). Peak memory consumption was 17.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 67.19 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 42.62 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 2157.18 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 891.0 MB in the end (delta: 228.5 MB). Peak memory consumption was 228.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 29948.90 ms. Allocated memory was 1.2 GB in the beginning and 1.7 GB in the end (delta: 497.5 MB). Free memory was 891.0 MB in the beginning and 1.2 GB in the end (delta: -283.6 MB). Peak memory consumption was 213.9 MB. Max. memory is 11.5 GB. * Witness Printer took 113.98 ms. Allocated memory is still 1.7 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 722]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L524] int pumpRunning = 0; [L525] int systemActive = 1; [L728] int waterLevel = 1; [L729] int methaneLevelCritical = 0; [L822] int cleanupTimeShifts = 4; [L247] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L895] int retValue_acc ; [L896] int tmp ; [L69] int retValue_acc ; [L72] retValue_acc = 1 [L73] return (retValue_acc); [L902] tmp = valid_product() [L904] COND TRUE \read(tmp) [L450] int splverifierCounter ; [L451] int tmp ; [L452] int tmp___0 ; [L453] int tmp___1 ; [L454] int tmp___2 ; [L457] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L459] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L461] COND TRUE splverifierCounter < 4 [L467] tmp = __VERIFIER_nondet_int() [L469] COND TRUE \read(tmp) [L746] COND TRUE waterLevel < 2 [L747] waterLevel = waterLevel + 1 [L477] tmp___0 = __VERIFIER_nondet_int() [L479] COND TRUE \read(tmp___0) [L758] COND FALSE !(\read(methaneLevelCritical)) [L761] methaneLevelCritical = 1 [L487] tmp___2 = __VERIFIER_nondet_int() [L489] COND FALSE !(\read(tmp___2)) [L493] tmp___1 = __VERIFIER_nondet_int() [L495] COND FALSE !(\read(tmp___1)) [L532] COND FALSE !(\read(pumpRunning)) [L539] COND TRUE \read(systemActive) [L587] int tmp ; [L590] COND FALSE !(\read(pumpRunning)) [L561] int tmp ; [L564] COND TRUE ! pumpRunning [L684] int retValue_acc ; [L685] int tmp ; [L686] int tmp___0 ; [L808] int retValue_acc ; [L811] COND FALSE !(waterLevel < 2) [L815] retValue_acc = 0 [L816] return (retValue_acc); [L690] tmp = isHighWaterSensorDry() [L692] COND FALSE !(\read(tmp)) [L695] tmp___0 = 1 [L697] retValue_acc = tmp___0 [L698] return (retValue_acc); [L566] tmp = isHighWaterLevel() [L568] COND TRUE \read(tmp) [L615] pumpRunning = 1 [L919] int tmp ; [L920] int tmp___0 ; [L799] int retValue_acc ; [L802] retValue_acc = waterLevel [L803] return (retValue_acc); [L924] tmp = getWaterLevel() [L926] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L459] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=1, pumpRunning=1, systemActive=1, waterLevel=2] [L461] COND TRUE splverifierCounter < 4 [L467] tmp = __VERIFIER_nondet_int() [L469] COND TRUE \read(tmp) [L746] COND FALSE !(waterLevel < 2) [L477] tmp___0 = __VERIFIER_nondet_int() [L479] COND TRUE \read(tmp___0) [L758] COND TRUE \read(methaneLevelCritical) [L759] methaneLevelCritical = 0 [L487] tmp___2 = __VERIFIER_nondet_int() [L489] COND FALSE !(\read(tmp___2)) [L493] tmp___1 = __VERIFIER_nondet_int() [L495] COND FALSE !(\read(tmp___1)) [L532] COND TRUE \read(pumpRunning) [L734] COND TRUE waterLevel > 0 [L735] waterLevel = waterLevel - 1 [L539] COND TRUE \read(systemActive) [L587] int tmp ; [L590] COND TRUE \read(pumpRunning) [L628] int retValue_acc ; [L767] int retValue_acc ; [L770] retValue_acc = methaneLevelCritical [L771] return (retValue_acc); [L632] retValue_acc = isMethaneLevelCritical() [L634] return (retValue_acc); [L592] tmp = isMethaneAlarm() [L594] COND FALSE !(\read(tmp)) [L561] int tmp ; [L564] COND FALSE !(! pumpRunning) [L919] int tmp ; [L920] int tmp___0 ; [L799] int retValue_acc ; [L802] retValue_acc = waterLevel [L803] return (retValue_acc); [L924] tmp = getWaterLevel() [L926] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L459] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L461] COND TRUE splverifierCounter < 4 [L467] tmp = __VERIFIER_nondet_int() [L469] COND FALSE !(\read(tmp)) [L477] tmp___0 = __VERIFIER_nondet_int() [L479] COND FALSE !(\read(tmp___0)) [L487] tmp___2 = __VERIFIER_nondet_int() [L489] COND FALSE !(\read(tmp___2)) [L493] tmp___1 = __VERIFIER_nondet_int() [L495] COND FALSE !(\read(tmp___1)) [L532] COND TRUE \read(pumpRunning) [L734] COND TRUE waterLevel > 0 [L735] waterLevel = waterLevel - 1 [L539] COND TRUE \read(systemActive) [L587] int tmp ; [L590] COND TRUE \read(pumpRunning) [L628] int retValue_acc ; [L767] int retValue_acc ; [L770] retValue_acc = methaneLevelCritical [L771] return (retValue_acc); [L632] retValue_acc = isMethaneLevelCritical() [L634] return (retValue_acc); [L592] tmp = isMethaneAlarm() [L594] COND FALSE !(\read(tmp)) [L561] int tmp ; [L564] COND FALSE !(! pumpRunning) [L919] int tmp ; [L920] int tmp___0 ; [L799] int retValue_acc ; [L802] retValue_acc = waterLevel [L803] return (retValue_acc); [L924] tmp = getWaterLevel() [L926] COND TRUE tmp == 0 [L639] int retValue_acc ; [L642] retValue_acc = pumpRunning [L643] return (retValue_acc); [L928] tmp___0 = isPumpRunning() [L930] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L722] __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, 23 locations, 3 error locations. Result: UNSAFE, OverallTime: 29.8s, OverallIterations: 3, TraceHistogramMax: 3, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 51 SDtfs, 168 SDslu, 231 SDs, 0 SdLazy, 260 SolverSat, 65 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 13.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=52occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 50 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 40 NumberOfCodeBlocks, 40 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 33 ConstructedInterpolants, 0 QuantifiedInterpolants, 6618 SizeOfPredicates, 62 NumberOfNonLiveVariables, 337 ConjunctsInSsa, 41 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 0/9 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...