./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product45.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_19217b3b-1c62-4c6d-997f-c4886352e4a7/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_19217b3b-1c62-4c6d-997f-c4886352e4a7/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_19217b3b-1c62-4c6d-997f-c4886352e4a7/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_19217b3b-1c62-4c6d-997f-c4886352e4a7/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product45.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_19217b3b-1c62-4c6d-997f-c4886352e4a7/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_19217b3b-1c62-4c6d-997f-c4886352e4a7/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 a9369a06c8d4df60e49baaf177cf32aba3e52d93 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 02:45:07,165 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:45:07,167 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:45:07,182 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:45:07,182 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:45:07,184 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:45:07,186 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:45:07,194 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:45:07,198 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:45:07,202 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:45:07,204 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:45:07,205 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:45:07,205 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:45:07,207 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:45:07,208 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:45:07,209 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:45:07,210 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:45:07,210 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:45:07,212 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:45:07,216 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:45:07,219 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:45:07,222 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:45:07,224 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:45:07,225 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:45:07,228 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:45:07,228 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:45:07,228 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:45:07,230 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:45:07,230 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:45:07,232 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:45:07,232 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:45:07,233 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:45:07,233 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:45:07,234 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:45:07,235 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:45:07,235 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:45:07,236 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:45:07,236 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:45:07,236 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:45:07,237 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:45:07,238 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:45:07,239 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_19217b3b-1c62-4c6d-997f-c4886352e4a7/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-26 02:45:07,265 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:45:07,276 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:45:07,277 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:45:07,277 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:45:07,277 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:45:07,277 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:45:07,278 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-26 02:45:07,278 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:45:07,278 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:45:07,278 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-26 02:45:07,278 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-26 02:45:07,279 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:45:07,279 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-26 02:45:07,279 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-26 02:45:07,279 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-26 02:45:07,280 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:45:07,280 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:45:07,280 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 02:45:07,281 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:45:07,281 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:45:07,281 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:45:07,281 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:45:07,282 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:45:07,282 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:45:07,283 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:45:07,283 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:45:07,283 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:45:07,284 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:45:07,284 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:45:07,284 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:45:07,284 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:45:07,285 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:45:07,285 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:45:07,285 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-26 02:45:07,285 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-26 02:45:07,286 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:45:07,286 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:45:07,286 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_19217b3b-1c62-4c6d-997f-c4886352e4a7/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 -> a9369a06c8d4df60e49baaf177cf32aba3e52d93 [2019-11-26 02:45:07,453 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:45:07,463 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:45:07,466 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:45:07,467 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:45:07,468 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:45:07,468 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_19217b3b-1c62-4c6d-997f-c4886352e4a7/bin/utaipan/../../sv-benchmarks/c/product-lines/minepump_spec4_product45.cil.c [2019-11-26 02:45:07,518 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_19217b3b-1c62-4c6d-997f-c4886352e4a7/bin/utaipan/data/389a55863/fa8280d9b1f8432784077479e418d7b9/FLAGd99542b4d [2019-11-26 02:45:07,957 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:45:07,957 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_19217b3b-1c62-4c6d-997f-c4886352e4a7/sv-benchmarks/c/product-lines/minepump_spec4_product45.cil.c [2019-11-26 02:45:07,969 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_19217b3b-1c62-4c6d-997f-c4886352e4a7/bin/utaipan/data/389a55863/fa8280d9b1f8432784077479e418d7b9/FLAGd99542b4d [2019-11-26 02:45:07,982 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_19217b3b-1c62-4c6d-997f-c4886352e4a7/bin/utaipan/data/389a55863/fa8280d9b1f8432784077479e418d7b9 [2019-11-26 02:45:07,985 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:45:07,986 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:45:07,987 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:45:07,987 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:45:07,990 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:45:07,991 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:45:07" (1/1) ... [2019-11-26 02:45:07,993 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32ccfaa5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:45:07, skipping insertion in model container [2019-11-26 02:45:07,994 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:45:07" (1/1) ... [2019-11-26 02:45:08,001 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:45:08,043 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:45:08,484 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:45:08,503 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:45:08,614 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:45:08,642 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:45:08,643 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:45:08 WrapperNode [2019-11-26 02:45:08,643 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:45:08,644 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:45:08,644 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:45:08,644 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:45:08,652 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:45:08" (1/1) ... [2019-11-26 02:45:08,669 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:45:08" (1/1) ... [2019-11-26 02:45:08,718 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:45:08,718 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:45:08,718 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:45:08,718 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:45:08,737 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:45:08" (1/1) ... [2019-11-26 02:45:08,737 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:45:08" (1/1) ... [2019-11-26 02:45:08,744 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:45:08" (1/1) ... [2019-11-26 02:45:08,744 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:45:08" (1/1) ... [2019-11-26 02:45:08,758 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:45:08" (1/1) ... [2019-11-26 02:45:08,767 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:45:08" (1/1) ... [2019-11-26 02:45:08,771 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:45:08" (1/1) ... [2019-11-26 02:45:08,778 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:45:08,778 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:45:08,779 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:45:08,779 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:45:08,780 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:45:08" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_19217b3b-1c62-4c6d-997f-c4886352e4a7/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 02:45:08,865 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-11-26 02:45:08,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-11-26 02:45:08,866 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:45:08,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:45:11,348 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:45:11,349 INFO L284 CfgBuilder]: Removed 192 assume(true) statements. [2019-11-26 02:45:11,350 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:45:11 BoogieIcfgContainer [2019-11-26 02:45:11,350 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:45:11,354 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:45:11,354 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:45:11,357 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:45:11,357 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:45:07" (1/3) ... [2019-11-26 02:45:11,358 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@229b9776 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:45:11, skipping insertion in model container [2019-11-26 02:45:11,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:45:08" (2/3) ... [2019-11-26 02:45:11,359 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@229b9776 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:45:11, skipping insertion in model container [2019-11-26 02:45:11,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:45:11" (3/3) ... [2019-11-26 02:45:11,364 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product45.cil.c [2019-11-26 02:45:11,374 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:45:11,381 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-11-26 02:45:11,391 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-11-26 02:45:11,417 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:45:11,418 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:45:11,418 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:45:11,418 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:45:11,418 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:45:11,418 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:45:11,418 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:45:11,418 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:45:11,430 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2019-11-26 02:45:11,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-26 02:45:11,436 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:45:11,436 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:45:11,437 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:45:11,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:45:11,441 INFO L82 PathProgramCache]: Analyzing trace with hash -278205779, now seen corresponding path program 1 times [2019-11-26 02:45:11,448 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:45:11,448 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570941697] [2019-11-26 02:45:11,449 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:45:11,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:45:11,660 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 02:45:11,661 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570941697] [2019-11-26 02:45:11,662 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:45:11,662 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-26 02:45:11,663 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641146008] [2019-11-26 02:45:11,667 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-26 02:45:11,667 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:45:11,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-26 02:45:11,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-26 02:45:11,682 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 2 states. [2019-11-26 02:45:11,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:45:11,759 INFO L93 Difference]: Finished difference Result 44 states and 63 transitions. [2019-11-26 02:45:11,759 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-26 02:45:11,760 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2019-11-26 02:45:11,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:45:11,769 INFO L225 Difference]: With dead ends: 44 [2019-11-26 02:45:11,769 INFO L226 Difference]: Without dead ends: 21 [2019-11-26 02:45:11,772 INFO L630 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 [2019-11-26 02:45:11,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-11-26 02:45:11,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2019-11-26 02:45:11,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-11-26 02:45:11,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2019-11-26 02:45:11,805 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 7 [2019-11-26 02:45:11,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:45:11,805 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2019-11-26 02:45:11,805 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-26 02:45:11,805 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2019-11-26 02:45:11,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-26 02:45:11,806 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:45:11,806 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:45:11,806 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:45:11,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:45:11,807 INFO L82 PathProgramCache]: Analyzing trace with hash -836520827, now seen corresponding path program 1 times [2019-11-26 02:45:11,807 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:45:11,807 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101847203] [2019-11-26 02:45:11,808 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:45:11,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:45:11,963 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 02:45:11,963 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101847203] [2019-11-26 02:45:11,963 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:45:11,963 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-26 02:45:11,963 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961997306] [2019-11-26 02:45:11,965 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-26 02:45:11,965 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:45:11,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-26 02:45:11,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-26 02:45:11,966 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand 4 states. [2019-11-26 02:45:12,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:45:12,055 INFO L93 Difference]: Finished difference Result 57 states and 70 transitions. [2019-11-26 02:45:12,055 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-26 02:45:12,055 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2019-11-26 02:45:12,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:45:12,056 INFO L225 Difference]: With dead ends: 57 [2019-11-26 02:45:12,056 INFO L226 Difference]: Without dead ends: 31 [2019-11-26 02:45:12,057 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-26 02:45:12,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-11-26 02:45:12,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 24. [2019-11-26 02:45:12,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-11-26 02:45:12,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2019-11-26 02:45:12,063 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 7 [2019-11-26 02:45:12,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:45:12,063 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2019-11-26 02:45:12,063 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-26 02:45:12,063 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2019-11-26 02:45:12,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-26 02:45:12,064 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:45:12,064 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2019-11-26 02:45:12,064 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:45:12,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:45:12,065 INFO L82 PathProgramCache]: Analyzing trace with hash 1292350959, now seen corresponding path program 1 times [2019-11-26 02:45:12,065 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:45:12,065 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478748558] [2019-11-26 02:45:12,065 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:45:12,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:45:12,346 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 02:45:12,346 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478748558] [2019-11-26 02:45:12,346 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1583881087] [2019-11-26 02:45:12,347 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_19217b3b-1c62-4c6d-997f-c4886352e4a7/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 02:45:12,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:45:12,515 INFO L255 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 33 conjunts are in the unsatisfiable core [2019-11-26 02:45:12,523 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:45:12,779 WARN L192 SmtUtils]: Spent 211.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 63 [2019-11-26 02:45:12,924 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:45:12,936 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:45:12,938 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:45:12,940 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:45:12,941 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:45:12,942 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:45:12,947 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:45:12,948 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:45:12,962 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:45:12,964 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:45:12,965 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:45:12,966 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:45:12,967 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:45:12,968 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:45:12,970 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:45:12,972 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:45:12,973 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:45:12,974 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:45:12,976 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:45:12,977 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:45:12,978 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:45:12,979 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:45:12,980 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:45:12,982 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:45:12,983 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:45:12,985 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:45:12,986 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:45:12,989 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:45:12,993 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:45:12,995 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:45:12,995 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:45:12,996 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:45:12,999 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:45:13,000 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:45:13,002 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:45:13,003 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:45:13,005 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:45:13,006 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:45:13,013 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:45:13,024 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:45:13,027 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:45:13,132 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 02:45:13,132 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:45:13,173 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:45:13,180 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:45:13,181 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:45:13,182 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:45:13,184 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:45:13,187 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:45:13,188 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:45:13,194 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:45:13,320 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:45:13,324 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:45:13,325 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-26 02:45:13,329 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:45:13,332 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:45:13,334 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:45:13,338 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:45:13,343 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:45:13,346 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:45:13,348 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:45:13,351 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:45:13,357 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:45:13,359 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-11-26 02:45:13,363 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:45:13,366 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:45:13,368 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:45:13,371 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:45:13,413 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 02:45:13,413 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [610321533] [2019-11-26 02:45:13,444 INFO L159 IcfgInterpreter]: Started Sifa with 8 locations of interest [2019-11-26 02:45:13,444 INFO L166 IcfgInterpreter]: Building call graph [2019-11-26 02:45:13,449 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-26 02:45:13,458 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-26 02:45:13,459 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-26 02:45:21,718 WARN L192 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 476 [2019-11-26 02:45:23,501 WARN L192 SmtUtils]: Spent 467.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 129 [2019-11-26 02:45:23,657 WARN L192 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 484 [2019-11-26 02:45:24,239 WARN L192 SmtUtils]: Spent 482.00 ms on a formula simplification. DAG size of input: 598 DAG size of output: 598 [2019-11-26 02:45:25,728 WARN L192 SmtUtils]: Spent 315.00 ms on a formula simplification. DAG size of input: 775 DAG size of output: 775 [2019-11-26 02:45:28,147 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-26 02:45:30,018 WARN L192 SmtUtils]: Spent 1.74 s on a formula simplification. DAG size of input: 383 DAG size of output: 195 [2019-11-26 02:45:34,032 WARN L192 SmtUtils]: Spent 3.83 s on a formula simplification. DAG size of input: 484 DAG size of output: 429 [2019-11-26 02:45:35,242 WARN L192 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 201 DAG size of output: 149 [2019-11-26 02:45:36,150 WARN L192 SmtUtils]: Spent 844.00 ms on a formula simplification. DAG size of input: 199 DAG size of output: 147 [2019-11-26 02:45:39,125 WARN L192 SmtUtils]: Spent 2.78 s on a formula simplification. DAG size of input: 371 DAG size of output: 259 [2019-11-26 02:45:40,838 WARN L192 SmtUtils]: Spent 1.57 s on a formula simplification. DAG size of input: 381 DAG size of output: 206 [2019-11-26 02:45:40,860 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-26 02:45:40,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-11-26 02:45:40,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 6, 6] total 13 [2019-11-26 02:45:40,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725841413] [2019-11-26 02:45:40,861 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-26 02:45:40,862 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:45:40,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-26 02:45:40,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2019-11-26 02:45:40,863 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 14 states. [2019-11-26 02:45:41,154 WARN L192 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 63 [2019-11-26 02:45:41,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:45:41,330 INFO L93 Difference]: Finished difference Result 61 states and 74 transitions. [2019-11-26 02:45:41,330 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-26 02:45:41,330 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 10 [2019-11-26 02:45:41,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:45:41,331 INFO L225 Difference]: With dead ends: 61 [2019-11-26 02:45:41,331 INFO L226 Difference]: Without dead ends: 42 [2019-11-26 02:45:41,332 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 13.5s TimeCoverageRelationStatistics Valid=98, Invalid=408, Unknown=0, NotChecked=0, Total=506 [2019-11-26 02:45:41,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-11-26 02:45:41,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 29. [2019-11-26 02:45:41,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-26 02:45:41,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2019-11-26 02:45:41,337 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 10 [2019-11-26 02:45:41,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:45:41,338 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2019-11-26 02:45:41,338 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-26 02:45:41,338 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2019-11-26 02:45:41,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-26 02:45:41,338 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:45:41,338 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1] [2019-11-26 02:45:41,539 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:45:41,539 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:45:41,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:45:41,539 INFO L82 PathProgramCache]: Analyzing trace with hash -1270332347, now seen corresponding path program 2 times [2019-11-26 02:45:41,540 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:45:41,540 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522885818] [2019-11-26 02:45:41,540 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:45:41,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 02:45:41,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-26 02:45:42,045 INFO L174 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2019-11-26 02:45:42,046 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-26 02:45:42,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 02:45:42 BoogieIcfgContainer [2019-11-26 02:45:42,140 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 02:45:42,142 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:45:42,143 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:45:42,143 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:45:42,143 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:45:11" (3/4) ... [2019-11-26 02:45:42,155 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-26 02:45:42,272 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_19217b3b-1c62-4c6d-997f-c4886352e4a7/bin/utaipan/witness.graphml [2019-11-26 02:45:42,273 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:45:42,274 INFO L168 Benchmark]: Toolchain (without parser) took 34288.26 ms. Allocated memory was 1.0 GB in the beginning and 1.7 GB in the end (delta: 684.2 MB). Free memory was 944.7 MB in the beginning and 1.6 GB in the end (delta: -661.8 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:45:42,274 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:45:42,275 INFO L168 Benchmark]: CACSL2BoogieTranslator took 656.57 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 184.0 MB). Free memory was 939.3 MB in the beginning and 1.2 GB in the end (delta: -212.9 MB). Peak memory consumption was 17.8 MB. Max. memory is 11.5 GB. [2019-11-26 02:45:42,275 INFO L168 Benchmark]: Boogie Procedure Inliner took 74.08 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:45:42,275 INFO L168 Benchmark]: Boogie Preprocessor took 60.10 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. [2019-11-26 02:45:42,276 INFO L168 Benchmark]: RCFGBuilder took 2572.11 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 856.5 MB in the end (delta: 288.8 MB). Peak memory consumption was 288.8 MB. Max. memory is 11.5 GB. [2019-11-26 02:45:42,276 INFO L168 Benchmark]: TraceAbstraction took 30785.85 ms. Allocated memory was 1.2 GB in the beginning and 1.7 GB in the end (delta: 500.2 MB). Free memory was 856.5 MB in the beginning and 1.6 GB in the end (delta: -770.3 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:45:42,276 INFO L168 Benchmark]: Witness Printer took 130.47 ms. Allocated memory is still 1.7 GB. Free memory was 1.6 GB in the beginning and 1.6 GB in the end (delta: 20.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. [2019-11-26 02:45:42,278 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 656.57 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 184.0 MB). Free memory was 939.3 MB in the beginning and 1.2 GB in the end (delta: -212.9 MB). Peak memory consumption was 17.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 74.08 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 60.10 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. * RCFGBuilder took 2572.11 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 856.5 MB in the end (delta: 288.8 MB). Peak memory consumption was 288.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 30785.85 ms. Allocated memory was 1.2 GB in the beginning and 1.7 GB in the end (delta: 500.2 MB). Free memory was 856.5 MB in the beginning and 1.6 GB in the end (delta: -770.3 MB). There was no memory consumed. Max. memory is 11.5 GB. * Witness Printer took 130.47 ms. Allocated memory is still 1.7 GB. Free memory was 1.6 GB in the beginning and 1.6 GB in the end (delta: 20.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 317]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L117] int pumpRunning = 0; [L118] int systemActive = 1; [L715] int cleanupTimeShifts = 4; [L814] int waterLevel = 1; [L815] int methaneLevelCritical = 0; [L491] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L791] int retValue_acc ; [L792] int tmp ; [L934] int retValue_acc ; [L937] retValue_acc = 1 [L938] return (retValue_acc); [L798] tmp = valid_product() [L800] COND TRUE \read(tmp) [L45] int splverifierCounter ; [L46] int tmp ; [L47] int tmp___0 ; [L48] int tmp___1 ; [L49] int tmp___2 ; [L52] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L54] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L56] COND TRUE splverifierCounter < 4 [L62] tmp = __VERIFIER_nondet_int() [L64] COND TRUE \read(tmp) [L832] COND TRUE waterLevel < 2 [L833] waterLevel = waterLevel + 1 [L72] tmp___0 = __VERIFIER_nondet_int() [L74] COND FALSE !(\read(tmp___0)) [L82] tmp___2 = __VERIFIER_nondet_int() [L84] COND FALSE !(\read(tmp___2)) [L88] tmp___1 = __VERIFIER_nondet_int() [L90] COND TRUE \read(tmp___1) [L125] COND FALSE !(\read(pumpRunning)) [L132] COND TRUE \read(systemActive) [L180] int tmp ; [L183] COND FALSE !(\read(pumpRunning)) [L154] int tmp ; [L157] COND TRUE ! pumpRunning [L294] int retValue_acc ; [L295] int tmp ; [L296] int tmp___0 ; [L894] int retValue_acc ; [L897] COND FALSE !(waterLevel < 2) [L901] retValue_acc = 0 [L902] return (retValue_acc); [L300] tmp = isHighWaterSensorDry() [L302] COND FALSE !(\read(tmp)) [L305] tmp___0 = 1 [L307] retValue_acc = tmp___0 [L308] return (retValue_acc); [L159] tmp = isHighWaterLevel() [L161] COND TRUE \read(tmp) [L213] int tmp ; [L238] int retValue_acc ; [L853] int retValue_acc ; [L856] retValue_acc = methaneLevelCritical [L857] return (retValue_acc); [L242] retValue_acc = isMethaneLevelCritical() [L244] return (retValue_acc); [L217] tmp = isMethaneAlarm() [L219] COND FALSE !(\read(tmp)) [L208] pumpRunning = 1 [L690] int tmp ; [L691] int tmp___0 ; [L885] int retValue_acc ; [L888] retValue_acc = waterLevel [L889] return (retValue_acc); [L695] tmp = getWaterLevel() [L697] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L54] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L56] COND TRUE splverifierCounter < 4 [L62] tmp = __VERIFIER_nondet_int() [L64] COND TRUE \read(tmp) [L832] COND FALSE !(waterLevel < 2) [L72] tmp___0 = __VERIFIER_nondet_int() [L74] COND FALSE !(\read(tmp___0)) [L82] tmp___2 = __VERIFIER_nondet_int() [L84] COND FALSE !(\read(tmp___2)) [L88] tmp___1 = __VERIFIER_nondet_int() [L90] COND TRUE \read(tmp___1) [L125] COND TRUE \read(pumpRunning) [L820] COND TRUE waterLevel > 0 [L821] waterLevel = waterLevel - 1 [L132] COND TRUE \read(systemActive) [L180] int tmp ; [L183] COND TRUE \read(pumpRunning) [L238] int retValue_acc ; [L853] int retValue_acc ; [L856] retValue_acc = methaneLevelCritical [L857] return (retValue_acc); [L242] retValue_acc = isMethaneLevelCritical() [L244] return (retValue_acc); [L185] tmp = isMethaneAlarm() [L187] COND FALSE !(\read(tmp)) [L154] int tmp ; [L157] COND FALSE !(! pumpRunning) [L690] int tmp ; [L691] int tmp___0 ; [L885] int retValue_acc ; [L888] retValue_acc = waterLevel [L889] return (retValue_acc); [L695] tmp = getWaterLevel() [L697] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L54] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L56] COND TRUE splverifierCounter < 4 [L62] tmp = __VERIFIER_nondet_int() [L64] COND FALSE !(\read(tmp)) [L72] tmp___0 = __VERIFIER_nondet_int() [L74] COND FALSE !(\read(tmp___0)) [L82] tmp___2 = __VERIFIER_nondet_int() [L84] COND TRUE \read(tmp___2) [L125] COND TRUE \read(pumpRunning) [L820] COND TRUE waterLevel > 0 [L821] waterLevel = waterLevel - 1 [L132] COND TRUE \read(systemActive) [L180] int tmp ; [L183] COND TRUE \read(pumpRunning) [L238] int retValue_acc ; [L853] int retValue_acc ; [L856] retValue_acc = methaneLevelCritical [L857] return (retValue_acc); [L242] retValue_acc = isMethaneLevelCritical() [L244] return (retValue_acc); [L185] tmp = isMethaneAlarm() [L187] COND FALSE !(\read(tmp)) [L154] int tmp ; [L157] COND FALSE !(! pumpRunning) [L690] int tmp ; [L691] int tmp___0 ; [L885] int retValue_acc ; [L888] retValue_acc = waterLevel [L889] return (retValue_acc); [L695] tmp = getWaterLevel() [L697] COND TRUE tmp == 0 [L249] int retValue_acc ; [L252] retValue_acc = pumpRunning [L253] return (retValue_acc); [L699] tmp___0 = isPumpRunning() [L701] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L317] __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: 30.7s, OverallIterations: 4, TraceHistogramMax: 3, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 77 SDtfs, 65 SDslu, 150 SDs, 0 SdLazy, 115 SolverSat, 27 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 13.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=3, 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, 3 MinimizatonAttempts, 20 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 39 ConstructedInterpolants, 0 QuantifiedInterpolants, 5022 SizeOfPredicates, 51 NumberOfNonLiveVariables, 337 ConjunctsInSsa, 33 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 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...