./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product33.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_a18de844-08f7-403f-abb9-aa9df1a9b241/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_a18de844-08f7-403f-abb9-aa9df1a9b241/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_a18de844-08f7-403f-abb9-aa9df1a9b241/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_a18de844-08f7-403f-abb9-aa9df1a9b241/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product33.cil.c -s /tmp/vcloud-vcloud-master/worker/working_dir_a18de844-08f7-403f-abb9-aa9df1a9b241/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_a18de844-08f7-403f-abb9-aa9df1a9b241/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 2bf5cdbd1397f8c2609b4d66a963cb35955afadc .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_a18de844-08f7-403f-abb9-aa9df1a9b241/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_a18de844-08f7-403f-abb9-aa9df1a9b241/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_a18de844-08f7-403f-abb9-aa9df1a9b241/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_a18de844-08f7-403f-abb9-aa9df1a9b241/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product33.cil.c -s /tmp/vcloud-vcloud-master/worker/working_dir_a18de844-08f7-403f-abb9-aa9df1a9b241/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_a18de844-08f7-403f-abb9-aa9df1a9b241/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 2bf5cdbd1397f8c2609b4d66a963cb35955afadc .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 11:20:56,332 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:20:56,334 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:20:56,343 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:20:56,343 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:20:56,344 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:20:56,345 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:20:56,347 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:20:56,348 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:20:56,349 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:20:56,350 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:20:56,350 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:20:56,351 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:20:56,352 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:20:56,352 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:20:56,353 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:20:56,354 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:20:56,354 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:20:56,356 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:20:56,357 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:20:56,358 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:20:56,359 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:20:56,360 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:20:56,360 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:20:56,362 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:20:56,362 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:20:56,362 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:20:56,363 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:20:56,363 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:20:56,364 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:20:56,364 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:20:56,365 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:20:56,365 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:20:56,366 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:20:56,366 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:20:56,367 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:20:56,367 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:20:56,367 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:20:56,368 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:20:56,368 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:20:56,369 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:20:56,369 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_a18de844-08f7-403f-abb9-aa9df1a9b241/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-10-22 11:20:56,380 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:20:56,380 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:20:56,381 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:20:56,381 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:20:56,381 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:20:56,381 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:20:56,382 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-10-22 11:20:56,382 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:20:56,382 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:20:56,382 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-10-22 11:20:56,382 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-10-22 11:20:56,382 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:20:56,383 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:20:56,383 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:20:56,384 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 11:20:56,384 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:20:56,384 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:20:56,384 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:20:56,384 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:20:56,384 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:20:56,384 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:20:56,385 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:20:56,385 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:20:56,385 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:20:56,385 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:20:56,385 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:20:56,386 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:20:56,386 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:20:56,386 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:20:56,386 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:20:56,386 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:20:56,386 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-22 11:20:56,387 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 11:20:56,387 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:20:56,387 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:20:56,387 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_a18de844-08f7-403f-abb9-aa9df1a9b241/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 -> 2bf5cdbd1397f8c2609b4d66a963cb35955afadc [2019-10-22 11:20:56,422 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:20:56,432 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:20:56,434 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:20:56,437 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:20:56,439 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:20:56,440 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_a18de844-08f7-403f-abb9-aa9df1a9b241/bin/utaipan/../../sv-benchmarks/c/product-lines/minepump_spec4_product33.cil.c [2019-10-22 11:20:56,486 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_a18de844-08f7-403f-abb9-aa9df1a9b241/bin/utaipan/data/7991ca2c1/11cfee5bb68f406fb0d4e6df1111e010/FLAG082e0e99f [2019-10-22 11:20:56,977 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:20:56,977 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_a18de844-08f7-403f-abb9-aa9df1a9b241/sv-benchmarks/c/product-lines/minepump_spec4_product33.cil.c [2019-10-22 11:20:56,995 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_a18de844-08f7-403f-abb9-aa9df1a9b241/bin/utaipan/data/7991ca2c1/11cfee5bb68f406fb0d4e6df1111e010/FLAG082e0e99f [2019-10-22 11:20:57,291 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_a18de844-08f7-403f-abb9-aa9df1a9b241/bin/utaipan/data/7991ca2c1/11cfee5bb68f406fb0d4e6df1111e010 [2019-10-22 11:20:57,294 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:20:57,295 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:20:57,296 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:20:57,296 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:20:57,299 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:20:57,300 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:20:57" (1/1) ... [2019-10-22 11:20:57,303 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34867b07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:20:57, skipping insertion in model container [2019-10-22 11:20:57,303 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:20:57" (1/1) ... [2019-10-22 11:20:57,310 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:20:57,354 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:20:57,671 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:20:57,685 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:20:57,764 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:20:57,793 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:20:57,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:20:57 WrapperNode [2019-10-22 11:20:57,794 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:20:57,794 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:20:57,795 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:20:57,795 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:20:57,803 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:20:57" (1/1) ... [2019-10-22 11:20:57,819 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:20:57" (1/1) ... [2019-10-22 11:20:57,876 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:20:57,876 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:20:57,876 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:20:57,877 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:20:57,885 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:20:57" (1/1) ... [2019-10-22 11:20:57,886 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:20:57" (1/1) ... [2019-10-22 11:20:57,889 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:20:57" (1/1) ... [2019-10-22 11:20:57,889 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:20:57" (1/1) ... [2019-10-22 11:20:57,896 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:20:57" (1/1) ... [2019-10-22 11:20:57,911 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:20:57" (1/1) ... [2019-10-22 11:20:57,914 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:20:57" (1/1) ... [2019-10-22 11:20:57,917 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:20:57,917 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:20:57,917 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:20:57,917 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:20:57,918 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:20:57" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a18de844-08f7-403f-abb9-aa9df1a9b241/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:20:57,976 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 11:20:57,976 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-22 11:20:57,976 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:20:57,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:20:58,621 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:20:58,621 INFO L284 CfgBuilder]: Removed 96 assume(true) statements. [2019-10-22 11:20:58,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:20:58 BoogieIcfgContainer [2019-10-22 11:20:58,622 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:20:58,624 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:20:58,625 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:20:58,628 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:20:58,628 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:20:57" (1/3) ... [2019-10-22 11:20:58,629 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11ae74ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:20:58, skipping insertion in model container [2019-10-22 11:20:58,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:20:57" (2/3) ... [2019-10-22 11:20:58,629 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11ae74ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:20:58, skipping insertion in model container [2019-10-22 11:20:58,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:20:58" (3/3) ... [2019-10-22 11:20:58,631 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product33.cil.c [2019-10-22 11:20:58,641 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:20:58,649 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-10-22 11:20:58,671 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-10-22 11:20:58,715 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:20:58,716 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:20:58,716 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:20:58,717 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:20:58,718 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:20:58,718 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:20:58,718 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:20:58,718 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:20:58,737 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states. [2019-10-22 11:20:58,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-22 11:20:58,744 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:20:58,745 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:20:58,746 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:20:58,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:20:58,750 INFO L82 PathProgramCache]: Analyzing trace with hash 768274677, now seen corresponding path program 1 times [2019-10-22 11:20:58,757 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:20:58,758 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410954099] [2019-10-22 11:20:58,758 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:20:58,758 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:20:58,759 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:20:58,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:20:58,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:20:58,932 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410954099] [2019-10-22 11:20:58,933 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:20:58,934 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 11:20:58,934 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485179347] [2019-10-22 11:20:58,938 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-22 11:20:58,940 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:20:58,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-22 11:20:58,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 11:20:58,956 INFO L87 Difference]: Start difference. First operand 78 states. Second operand 2 states. [2019-10-22 11:20:58,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:20:58,985 INFO L93 Difference]: Finished difference Result 150 states and 227 transitions. [2019-10-22 11:20:58,985 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 11:20:58,987 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2019-10-22 11:20:58,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:20:58,998 INFO L225 Difference]: With dead ends: 150 [2019-10-22 11:20:58,998 INFO L226 Difference]: Without dead ends: 74 [2019-10-22 11:20:59,002 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 11:20:59,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2019-10-22 11:20:59,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2019-10-22 11:20:59,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2019-10-22 11:20:59,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 105 transitions. [2019-10-22 11:20:59,039 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 105 transitions. Word has length 16 [2019-10-22 11:20:59,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:20:59,039 INFO L462 AbstractCegarLoop]: Abstraction has 74 states and 105 transitions. [2019-10-22 11:20:59,040 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-22 11:20:59,040 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 105 transitions. [2019-10-22 11:20:59,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-22 11:20:59,040 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:20:59,041 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:20:59,041 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:20:59,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:20:59,041 INFO L82 PathProgramCache]: Analyzing trace with hash -1484097871, now seen corresponding path program 1 times [2019-10-22 11:20:59,042 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:20:59,042 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925685107] [2019-10-22 11:20:59,042 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:20:59,042 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:20:59,042 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:20:59,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:20:59,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:20:59,168 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925685107] [2019-10-22 11:20:59,168 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:20:59,168 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 11:20:59,168 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81249133] [2019-10-22 11:20:59,170 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:20:59,170 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:20:59,170 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:20:59,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:20:59,171 INFO L87 Difference]: Start difference. First operand 74 states and 105 transitions. Second operand 3 states. [2019-10-22 11:20:59,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:20:59,188 INFO L93 Difference]: Finished difference Result 74 states and 105 transitions. [2019-10-22 11:20:59,192 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:20:59,192 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2019-10-22 11:20:59,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:20:59,193 INFO L225 Difference]: With dead ends: 74 [2019-10-22 11:20:59,193 INFO L226 Difference]: Without dead ends: 34 [2019-10-22 11:20:59,194 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:20:59,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-10-22 11:20:59,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2019-10-22 11:20:59,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-10-22 11:20:59,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 48 transitions. [2019-10-22 11:20:59,199 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 48 transitions. Word has length 17 [2019-10-22 11:20:59,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:20:59,201 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 48 transitions. [2019-10-22 11:20:59,201 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:20:59,202 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 48 transitions. [2019-10-22 11:20:59,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-10-22 11:20:59,204 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:20:59,204 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:20:59,204 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:20:59,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:20:59,205 INFO L82 PathProgramCache]: Analyzing trace with hash 670124178, now seen corresponding path program 1 times [2019-10-22 11:20:59,206 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:20:59,206 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921179900] [2019-10-22 11:20:59,207 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:20:59,207 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:20:59,207 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:20:59,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:20:59,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:20:59,288 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921179900] [2019-10-22 11:20:59,288 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:20:59,288 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 11:20:59,288 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018351829] [2019-10-22 11:20:59,288 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:20:59,289 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:20:59,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:20:59,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:20:59,289 INFO L87 Difference]: Start difference. First operand 34 states and 48 transitions. Second operand 3 states. [2019-10-22 11:20:59,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:20:59,310 INFO L93 Difference]: Finished difference Result 62 states and 90 transitions. [2019-10-22 11:20:59,314 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:20:59,315 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2019-10-22 11:20:59,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:20:59,315 INFO L225 Difference]: With dead ends: 62 [2019-10-22 11:20:59,315 INFO L226 Difference]: Without dead ends: 34 [2019-10-22 11:20:59,316 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:20:59,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-10-22 11:20:59,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2019-10-22 11:20:59,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-10-22 11:20:59,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 47 transitions. [2019-10-22 11:20:59,323 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 47 transitions. Word has length 22 [2019-10-22 11:20:59,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:20:59,324 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 47 transitions. [2019-10-22 11:20:59,324 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:20:59,324 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 47 transitions. [2019-10-22 11:20:59,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-10-22 11:20:59,325 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:20:59,325 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:20:59,325 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:20:59,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:20:59,325 INFO L82 PathProgramCache]: Analyzing trace with hash -1804645939, now seen corresponding path program 1 times [2019-10-22 11:20:59,326 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:20:59,326 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706056541] [2019-10-22 11:20:59,326 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:20:59,326 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:20:59,326 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:20:59,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:20:59,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:20:59,427 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706056541] [2019-10-22 11:20:59,428 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:20:59,428 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 11:20:59,428 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315608044] [2019-10-22 11:20:59,428 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:20:59,428 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:20:59,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:20:59,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:20:59,429 INFO L87 Difference]: Start difference. First operand 34 states and 47 transitions. Second operand 3 states. [2019-10-22 11:20:59,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:20:59,478 INFO L93 Difference]: Finished difference Result 83 states and 118 transitions. [2019-10-22 11:20:59,479 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:20:59,479 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2019-10-22 11:20:59,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:20:59,480 INFO L225 Difference]: With dead ends: 83 [2019-10-22 11:20:59,480 INFO L226 Difference]: Without dead ends: 55 [2019-10-22 11:20:59,480 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:20:59,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2019-10-22 11:20:59,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 53. [2019-10-22 11:20:59,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2019-10-22 11:20:59,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 74 transitions. [2019-10-22 11:20:59,492 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 74 transitions. Word has length 23 [2019-10-22 11:20:59,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:20:59,492 INFO L462 AbstractCegarLoop]: Abstraction has 53 states and 74 transitions. [2019-10-22 11:20:59,493 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:20:59,493 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 74 transitions. [2019-10-22 11:20:59,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-10-22 11:20:59,493 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:20:59,493 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:20:59,494 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:20:59,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:20:59,494 INFO L82 PathProgramCache]: Analyzing trace with hash -1746371458, now seen corresponding path program 1 times [2019-10-22 11:20:59,494 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:20:59,495 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946204195] [2019-10-22 11:20:59,495 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:20:59,495 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:20:59,495 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:20:59,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:20:59,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:20:59,606 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946204195] [2019-10-22 11:20:59,606 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:20:59,606 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 11:20:59,606 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580987948] [2019-10-22 11:20:59,606 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:20:59,607 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:20:59,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:20:59,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:20:59,607 INFO L87 Difference]: Start difference. First operand 53 states and 74 transitions. Second operand 5 states. [2019-10-22 11:20:59,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:20:59,692 INFO L93 Difference]: Finished difference Result 139 states and 194 transitions. [2019-10-22 11:20:59,693 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 11:20:59,693 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2019-10-22 11:20:59,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:20:59,694 INFO L225 Difference]: With dead ends: 139 [2019-10-22 11:20:59,694 INFO L226 Difference]: Without dead ends: 92 [2019-10-22 11:20:59,695 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-22 11:20:59,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2019-10-22 11:20:59,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 56. [2019-10-22 11:20:59,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2019-10-22 11:20:59,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 77 transitions. [2019-10-22 11:20:59,707 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 77 transitions. Word has length 29 [2019-10-22 11:20:59,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:20:59,708 INFO L462 AbstractCegarLoop]: Abstraction has 56 states and 77 transitions. [2019-10-22 11:20:59,708 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:20:59,708 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 77 transitions. [2019-10-22 11:20:59,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-10-22 11:20:59,709 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:20:59,709 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:20:59,709 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:20:59,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:20:59,709 INFO L82 PathProgramCache]: Analyzing trace with hash 916139585, now seen corresponding path program 1 times [2019-10-22 11:20:59,710 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:20:59,710 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683279959] [2019-10-22 11:20:59,710 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:20:59,710 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:20:59,710 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:20:59,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:20:59,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:20:59,794 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683279959] [2019-10-22 11:20:59,794 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:20:59,794 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 11:20:59,794 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192401571] [2019-10-22 11:20:59,795 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:20:59,795 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:20:59,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:20:59,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:20:59,797 INFO L87 Difference]: Start difference. First operand 56 states and 77 transitions. Second operand 5 states. [2019-10-22 11:20:59,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:20:59,919 INFO L93 Difference]: Finished difference Result 203 states and 287 transitions. [2019-10-22 11:20:59,921 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 11:20:59,921 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2019-10-22 11:20:59,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:20:59,922 INFO L225 Difference]: With dead ends: 203 [2019-10-22 11:20:59,922 INFO L226 Difference]: Without dead ends: 153 [2019-10-22 11:20:59,923 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-10-22 11:20:59,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2019-10-22 11:20:59,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 98. [2019-10-22 11:20:59,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2019-10-22 11:20:59,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 132 transitions. [2019-10-22 11:20:59,946 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 132 transitions. Word has length 29 [2019-10-22 11:20:59,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:20:59,946 INFO L462 AbstractCegarLoop]: Abstraction has 98 states and 132 transitions. [2019-10-22 11:20:59,946 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:20:59,946 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 132 transitions. [2019-10-22 11:20:59,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-10-22 11:20:59,947 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:20:59,947 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:20:59,948 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:20:59,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:20:59,948 INFO L82 PathProgramCache]: Analyzing trace with hash -949743997, now seen corresponding path program 1 times [2019-10-22 11:20:59,948 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:20:59,948 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15294298] [2019-10-22 11:20:59,948 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:20:59,949 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:20:59,949 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:20:59,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:21:00,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:21:00,030 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15294298] [2019-10-22 11:21:00,030 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:21:00,031 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 11:21:00,031 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526049394] [2019-10-22 11:21:00,032 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:21:00,033 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:21:00,033 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:21:00,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:21:00,033 INFO L87 Difference]: Start difference. First operand 98 states and 132 transitions. Second operand 5 states. [2019-10-22 11:21:00,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:21:00,142 INFO L93 Difference]: Finished difference Result 197 states and 271 transitions. [2019-10-22 11:21:00,143 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-22 11:21:00,143 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2019-10-22 11:21:00,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:21:00,145 INFO L225 Difference]: With dead ends: 197 [2019-10-22 11:21:00,145 INFO L226 Difference]: Without dead ends: 195 [2019-10-22 11:21:00,145 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-10-22 11:21:00,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2019-10-22 11:21:00,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 98. [2019-10-22 11:21:00,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2019-10-22 11:21:00,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 131 transitions. [2019-10-22 11:21:00,176 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 131 transitions. Word has length 30 [2019-10-22 11:21:00,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:21:00,177 INFO L462 AbstractCegarLoop]: Abstraction has 98 states and 131 transitions. [2019-10-22 11:21:00,177 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:21:00,177 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 131 transitions. [2019-10-22 11:21:00,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-10-22 11:21:00,178 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:21:00,178 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:21:00,178 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:21:00,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:21:00,178 INFO L82 PathProgramCache]: Analyzing trace with hash 289685246, now seen corresponding path program 1 times [2019-10-22 11:21:00,178 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:21:00,179 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396109995] [2019-10-22 11:21:00,179 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:00,179 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:00,182 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:21:00,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:21:00,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:21:00,255 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396109995] [2019-10-22 11:21:00,255 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:21:00,255 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 11:21:00,255 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008906645] [2019-10-22 11:21:00,256 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:21:00,256 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:21:00,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:21:00,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:21:00,257 INFO L87 Difference]: Start difference. First operand 98 states and 131 transitions. Second operand 5 states. [2019-10-22 11:21:00,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:21:00,334 INFO L93 Difference]: Finished difference Result 228 states and 307 transitions. [2019-10-22 11:21:00,335 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 11:21:00,335 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2019-10-22 11:21:00,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:21:00,336 INFO L225 Difference]: With dead ends: 228 [2019-10-22 11:21:00,336 INFO L226 Difference]: Without dead ends: 136 [2019-10-22 11:21:00,337 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-10-22 11:21:00,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2019-10-22 11:21:00,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 81. [2019-10-22 11:21:00,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2019-10-22 11:21:00,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 106 transitions. [2019-10-22 11:21:00,358 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 106 transitions. Word has length 30 [2019-10-22 11:21:00,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:21:00,359 INFO L462 AbstractCegarLoop]: Abstraction has 81 states and 106 transitions. [2019-10-22 11:21:00,359 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:21:00,359 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 106 transitions. [2019-10-22 11:21:00,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-10-22 11:21:00,361 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:21:00,361 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:21:00,361 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:21:00,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:21:00,362 INFO L82 PathProgramCache]: Analyzing trace with hash 547850684, now seen corresponding path program 1 times [2019-10-22 11:21:00,362 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:21:00,362 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797839304] [2019-10-22 11:21:00,362 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:00,363 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:00,363 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:21:00,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:21:00,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:21:00,413 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797839304] [2019-10-22 11:21:00,414 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:21:00,414 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 11:21:00,414 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242887313] [2019-10-22 11:21:00,414 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:21:00,415 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:21:00,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:21:00,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:21:00,417 INFO L87 Difference]: Start difference. First operand 81 states and 106 transitions. Second operand 5 states. [2019-10-22 11:21:00,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:21:00,538 INFO L93 Difference]: Finished difference Result 208 states and 285 transitions. [2019-10-22 11:21:00,538 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 11:21:00,538 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2019-10-22 11:21:00,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:21:00,539 INFO L225 Difference]: With dead ends: 208 [2019-10-22 11:21:00,539 INFO L226 Difference]: Without dead ends: 156 [2019-10-22 11:21:00,540 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-10-22 11:21:00,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2019-10-22 11:21:00,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 118. [2019-10-22 11:21:00,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2019-10-22 11:21:00,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 154 transitions. [2019-10-22 11:21:00,562 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 154 transitions. Word has length 30 [2019-10-22 11:21:00,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:21:00,562 INFO L462 AbstractCegarLoop]: Abstraction has 118 states and 154 transitions. [2019-10-22 11:21:00,563 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:21:00,563 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 154 transitions. [2019-10-22 11:21:00,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-10-22 11:21:00,564 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:21:00,564 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:21:00,564 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:21:00,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:21:00,565 INFO L82 PathProgramCache]: Analyzing trace with hash 1693810360, now seen corresponding path program 1 times [2019-10-22 11:21:00,565 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:21:00,565 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215627638] [2019-10-22 11:21:00,565 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:00,565 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:00,587 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:21:00,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:21:00,658 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:21:00,658 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215627638] [2019-10-22 11:21:00,658 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [567275975] [2019-10-22 11:21:00,658 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a18de844-08f7-403f-abb9-aa9df1a9b241/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:21:00,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:21:00,780 INFO L256 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-22 11:21:00,786 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:21:00,814 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:21:00,816 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:21:00,848 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:21:00,850 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [2050709893] [2019-10-22 11:21:00,856 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 46 [2019-10-22 11:21:00,902 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2019-10-22 11:21:00,902 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-22 11:21:01,324 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:21:01,325 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: inappropriate decl info IMPLEMENTATION at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Boogie2SmtSymbolTable.getBoogieVar(Boogie2SmtSymbolTable.java:222) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.getBoogieVar(NonrelationalStatementProcessor.java:348) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.handleHavocStatement(NonrelationalStatementProcessor.java:325) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.processStatement(NonrelationalStatementProcessor.java:159) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.process(NonrelationalStatementProcessor.java:138) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.process(NonrelationalStatementProcessor.java:107) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.handleInternalTransition(NonrelationalPostOperator.java:422) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.handleInternalTransition(NonrelationalPostOperator.java:413) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.apply(NonrelationalPostOperator.java:140) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.apply(NonrelationalPostOperator.java:1) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.compound.CompoundDomainPostOperator.applyInternally(CompoundDomainPostOperator.java:306) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.compound.CompoundDomainPostOperator.apply(CompoundDomainPostOperator.java:131) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.compound.CompoundDomainPostOperator.apply(CompoundDomainPostOperator.java:1) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormanCachedPostOperation.restoreOriginalStateVariables(PoormanCachedPostOperation.java:322) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormansAbstractPostOperator.applyPost(PoormansAbstractPostOperator.java:217) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormansAbstractPostOperator.apply(PoormansAbstractPostOperator.java:120) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormansAbstractPostOperator.apply(PoormansAbstractPostOperator.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.absint.DisjunctiveAbstractState.lambda$17(DisjunctiveAbstractState.java:323) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.absint.DisjunctiveAbstractState.mapCollection(DisjunctiveAbstractState.java:519) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.absint.DisjunctiveAbstractState.apply(DisjunctiveAbstractState.java:323) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.algorithm.FixpointEngine.calculateAbstractPost(FixpointEngine.java:249) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.algorithm.FixpointEngine.calculateFixpoint(FixpointEngine.java:134) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.algorithm.FixpointEngine.run(FixpointEngine.java:105) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.tool.AbstractInterpreter.runWithoutTimeoutAndResults(AbstractInterpreter.java:149) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarAbsIntRunner.generateFixpoints(CegarAbsIntRunner.java:227) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarAbsIntRunner.(CegarAbsIntRunner.java:158) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleAbstractInterpretation.getOrConstructRunner(IpTcStrategyModuleAbstractInterpretation.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleAbstractInterpretation.construct(IpTcStrategyModuleAbstractInterpretation.java:81) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:299) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.generateProof(TraceAbstractionRefinementEngine.java:184) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-10-22 11:21:01,330 INFO L168 Benchmark]: Toolchain (without parser) took 4034.31 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.7 MB). Free memory was 949.9 MB in the beginning and 1.0 GB in the end (delta: -95.5 MB). Peak memory consumption was 39.3 MB. Max. memory is 11.5 GB. [2019-10-22 11:21:01,330 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 966.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:21:01,331 INFO L168 Benchmark]: CACSL2BoogieTranslator took 498.03 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.7 MB). Free memory was 944.5 MB in the beginning and 1.1 GB in the end (delta: -174.2 MB). Peak memory consumption was 17.7 MB. Max. memory is 11.5 GB. [2019-10-22 11:21:01,331 INFO L168 Benchmark]: Boogie Procedure Inliner took 81.60 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-10-22 11:21:01,332 INFO L168 Benchmark]: Boogie Preprocessor took 40.54 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. [2019-10-22 11:21:01,332 INFO L168 Benchmark]: RCFGBuilder took 705.34 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: 54.6 MB). Peak memory consumption was 54.6 MB. Max. memory is 11.5 GB. [2019-10-22 11:21:01,333 INFO L168 Benchmark]: TraceAbstraction took 2703.59 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 11.5 GB. [2019-10-22 11:21:01,340 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 966.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 498.03 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 134.7 MB). Free memory was 944.5 MB in the beginning and 1.1 GB in the end (delta: -174.2 MB). Peak memory consumption was 17.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 81.60 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 40.54 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 11.5 GB. * RCFGBuilder took 705.34 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: 54.6 MB). Peak memory consumption was 54.6 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2703.59 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 12.0 MB). Peak memory consumption was 12.0 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: inappropriate decl info IMPLEMENTATION de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: inappropriate decl info IMPLEMENTATION: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Boogie2SmtSymbolTable.getBoogieVar(Boogie2SmtSymbolTable.java:222) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-cad4683 [2019-10-22 11:21:03,427 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:21:03,429 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:21:03,441 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:21:03,441 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:21:03,442 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:21:03,443 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:21:03,445 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:21:03,446 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:21:03,447 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:21:03,448 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:21:03,449 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:21:03,449 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:21:03,450 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:21:03,451 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:21:03,452 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:21:03,453 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:21:03,454 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:21:03,455 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:21:03,457 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:21:03,459 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:21:03,460 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:21:03,461 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:21:03,462 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:21:03,464 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:21:03,464 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:21:03,465 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:21:03,466 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:21:03,466 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:21:03,467 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:21:03,467 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:21:03,468 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:21:03,469 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:21:03,470 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:21:03,471 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:21:03,471 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:21:03,472 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:21:03,472 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:21:03,472 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:21:03,473 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:21:03,474 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:21:03,474 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_a18de844-08f7-403f-abb9-aa9df1a9b241/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2019-10-22 11:21:03,488 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:21:03,488 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:21:03,489 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:21:03,489 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:21:03,489 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:21:03,489 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:21:03,490 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:21:03,490 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:21:03,490 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:21:03,490 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:21:03,491 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:21:03,491 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:21:03,491 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:21:03,491 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:21:03,491 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:21:03,491 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:21:03,492 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-10-22 11:21:03,492 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-10-22 11:21:03,492 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:21:03,492 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:21:03,492 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 11:21:03,492 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:21:03,493 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:21:03,493 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:21:03,493 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:21:03,493 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:21:03,493 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:21:03,493 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:21:03,494 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:21:03,494 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:21:03,494 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-10-22 11:21:03,494 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-10-22 11:21:03,494 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:21:03,494 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:21:03,495 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_a18de844-08f7-403f-abb9-aa9df1a9b241/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 -> 2bf5cdbd1397f8c2609b4d66a963cb35955afadc [2019-10-22 11:21:03,528 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:21:03,541 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:21:03,548 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:21:03,550 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:21:03,550 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:21:03,551 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_a18de844-08f7-403f-abb9-aa9df1a9b241/bin/utaipan/../../sv-benchmarks/c/product-lines/minepump_spec4_product33.cil.c [2019-10-22 11:21:03,606 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_a18de844-08f7-403f-abb9-aa9df1a9b241/bin/utaipan/data/038ed2e59/01a8947e42ba47d695fbe7a607a08cd3/FLAG53f080e6e [2019-10-22 11:21:04,080 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:21:04,080 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_a18de844-08f7-403f-abb9-aa9df1a9b241/sv-benchmarks/c/product-lines/minepump_spec4_product33.cil.c [2019-10-22 11:21:04,090 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_a18de844-08f7-403f-abb9-aa9df1a9b241/bin/utaipan/data/038ed2e59/01a8947e42ba47d695fbe7a607a08cd3/FLAG53f080e6e [2019-10-22 11:21:04,386 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_a18de844-08f7-403f-abb9-aa9df1a9b241/bin/utaipan/data/038ed2e59/01a8947e42ba47d695fbe7a607a08cd3 [2019-10-22 11:21:04,389 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:21:04,390 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:21:04,391 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:21:04,391 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:21:04,394 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:21:04,395 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:21:04" (1/1) ... [2019-10-22 11:21:04,397 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6946f9b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:04, skipping insertion in model container [2019-10-22 11:21:04,398 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:21:04" (1/1) ... [2019-10-22 11:21:04,404 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:21:04,436 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:21:04,730 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:21:04,816 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:21:04,907 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:21:04,931 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:21:04,931 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:04 WrapperNode [2019-10-22 11:21:04,932 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:21:04,932 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:21:04,933 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:21:04,933 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:21:04,939 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:04" (1/1) ... [2019-10-22 11:21:04,955 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:04" (1/1) ... [2019-10-22 11:21:04,990 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:21:04,991 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:21:04,991 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:21:04,991 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:21:04,999 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:04" (1/1) ... [2019-10-22 11:21:04,999 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:04" (1/1) ... [2019-10-22 11:21:05,003 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:04" (1/1) ... [2019-10-22 11:21:05,003 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:04" (1/1) ... [2019-10-22 11:21:05,013 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:04" (1/1) ... [2019-10-22 11:21:05,019 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:04" (1/1) ... [2019-10-22 11:21:05,029 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:04" (1/1) ... [2019-10-22 11:21:05,038 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:21:05,039 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:21:05,039 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:21:05,039 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:21:05,040 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:04" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a18de844-08f7-403f-abb9-aa9df1a9b241/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:21:05,081 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 11:21:05,082 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2019-10-22 11:21:05,082 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:21:05,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:21:05,944 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:21:05,945 INFO L284 CfgBuilder]: Removed 96 assume(true) statements. [2019-10-22 11:21:05,946 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:21:05 BoogieIcfgContainer [2019-10-22 11:21:05,946 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:21:05,950 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:21:05,950 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:21:05,953 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:21:05,953 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:21:04" (1/3) ... [2019-10-22 11:21:05,954 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c442c18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:21:05, skipping insertion in model container [2019-10-22 11:21:05,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:04" (2/3) ... [2019-10-22 11:21:05,955 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c442c18 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:21:05, skipping insertion in model container [2019-10-22 11:21:05,955 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:21:05" (3/3) ... [2019-10-22 11:21:05,957 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product33.cil.c [2019-10-22 11:21:05,970 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:21:05,982 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-10-22 11:21:05,995 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-10-22 11:21:06,022 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:21:06,022 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:21:06,022 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:21:06,022 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:21:06,023 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:21:06,023 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:21:06,023 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:21:06,023 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:21:06,037 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states. [2019-10-22 11:21:06,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-22 11:21:06,047 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:21:06,051 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:21:06,053 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:21:06,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:21:06,060 INFO L82 PathProgramCache]: Analyzing trace with hash 768274677, now seen corresponding path program 1 times [2019-10-22 11:21:06,073 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:21:06,073 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [974838844] [2019-10-22 11:21:06,074 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a18de844-08f7-403f-abb9-aa9df1a9b241/bin/utaipan/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:21:06,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:21:06,251 INFO L256 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 1 conjunts are in the unsatisfiable core [2019-10-22 11:21:06,257 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:21:06,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:21:06,272 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:21:06,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:21:06,281 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [974838844] [2019-10-22 11:21:06,281 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:21:06,282 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-10-22 11:21:06,282 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295733015] [2019-10-22 11:21:06,286 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-22 11:21:06,287 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:21:06,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-22 11:21:06,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 11:21:06,301 INFO L87 Difference]: Start difference. First operand 78 states. Second operand 2 states. [2019-10-22 11:21:06,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:21:06,330 INFO L93 Difference]: Finished difference Result 150 states and 227 transitions. [2019-10-22 11:21:06,330 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 11:21:06,332 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2019-10-22 11:21:06,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:21:06,344 INFO L225 Difference]: With dead ends: 150 [2019-10-22 11:21:06,346 INFO L226 Difference]: Without dead ends: 74 [2019-10-22 11:21:06,350 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 11:21:06,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2019-10-22 11:21:06,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2019-10-22 11:21:06,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2019-10-22 11:21:06,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 105 transitions. [2019-10-22 11:21:06,398 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 105 transitions. Word has length 16 [2019-10-22 11:21:06,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:21:06,398 INFO L462 AbstractCegarLoop]: Abstraction has 74 states and 105 transitions. [2019-10-22 11:21:06,398 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-22 11:21:06,398 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 105 transitions. [2019-10-22 11:21:06,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-22 11:21:06,399 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:21:06,399 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:21:06,600 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:21:06,600 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:21:06,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:21:06,601 INFO L82 PathProgramCache]: Analyzing trace with hash -1484097871, now seen corresponding path program 1 times [2019-10-22 11:21:06,601 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:21:06,602 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [153876835] [2019-10-22 11:21:06,602 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a18de844-08f7-403f-abb9-aa9df1a9b241/bin/utaipan/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:21:06,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:21:06,736 INFO L256 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 11:21:06,737 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:21:06,757 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:21:06,757 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:21:06,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:21:06,766 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [153876835] [2019-10-22 11:21:06,766 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:21:06,766 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2019-10-22 11:21:06,767 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090899396] [2019-10-22 11:21:06,768 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 11:21:06,768 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:21:06,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 11:21:06,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-22 11:21:06,769 INFO L87 Difference]: Start difference. First operand 74 states and 105 transitions. Second operand 4 states. [2019-10-22 11:21:06,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:21:06,796 INFO L93 Difference]: Finished difference Result 142 states and 204 transitions. [2019-10-22 11:21:06,796 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:21:06,796 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2019-10-22 11:21:06,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:21:06,798 INFO L225 Difference]: With dead ends: 142 [2019-10-22 11:21:06,798 INFO L226 Difference]: Without dead ends: 74 [2019-10-22 11:21:06,799 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-22 11:21:06,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2019-10-22 11:21:06,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2019-10-22 11:21:06,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2019-10-22 11:21:06,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 102 transitions. [2019-10-22 11:21:06,809 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 102 transitions. Word has length 17 [2019-10-22 11:21:06,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:21:06,809 INFO L462 AbstractCegarLoop]: Abstraction has 74 states and 102 transitions. [2019-10-22 11:21:06,809 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 11:21:06,810 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 102 transitions. [2019-10-22 11:21:06,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-10-22 11:21:06,811 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:21:06,811 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:21:07,015 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:21:07,016 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:21:07,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:21:07,016 INFO L82 PathProgramCache]: Analyzing trace with hash 133947356, now seen corresponding path program 1 times [2019-10-22 11:21:07,017 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:21:07,017 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1610151584] [2019-10-22 11:21:07,017 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a18de844-08f7-403f-abb9-aa9df1a9b241/bin/utaipan/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:21:07,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:21:07,191 INFO L256 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 11:21:07,192 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:21:07,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:21:07,199 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:21:07,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:21:07,201 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1610151584] [2019-10-22 11:21:07,201 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:21:07,202 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-10-22 11:21:07,202 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517653187] [2019-10-22 11:21:07,202 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:21:07,202 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:21:07,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:21:07,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:21:07,203 INFO L87 Difference]: Start difference. First operand 74 states and 102 transitions. Second operand 3 states. [2019-10-22 11:21:07,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:21:07,348 INFO L93 Difference]: Finished difference Result 189 states and 261 transitions. [2019-10-22 11:21:07,348 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:21:07,349 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2019-10-22 11:21:07,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:21:07,350 INFO L225 Difference]: With dead ends: 189 [2019-10-22 11:21:07,350 INFO L226 Difference]: Without dead ends: 121 [2019-10-22 11:21:07,351 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:21:07,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2019-10-22 11:21:07,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 115. [2019-10-22 11:21:07,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2019-10-22 11:21:07,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 156 transitions. [2019-10-22 11:21:07,366 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 156 transitions. Word has length 18 [2019-10-22 11:21:07,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:21:07,366 INFO L462 AbstractCegarLoop]: Abstraction has 115 states and 156 transitions. [2019-10-22 11:21:07,366 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:21:07,366 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 156 transitions. [2019-10-22 11:21:07,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-10-22 11:21:07,367 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:21:07,367 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:21:07,568 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:21:07,568 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:21:07,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:21:07,569 INFO L82 PathProgramCache]: Analyzing trace with hash -1530479925, now seen corresponding path program 1 times [2019-10-22 11:21:07,569 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:21:07,569 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1833648397] [2019-10-22 11:21:07,570 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a18de844-08f7-403f-abb9-aa9df1a9b241/bin/utaipan/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:21:07,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:21:07,706 INFO L256 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-22 11:21:07,708 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:21:07,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:21:07,726 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:21:07,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:21:07,747 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1833648397] [2019-10-22 11:21:07,747 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:21:07,747 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-10-22 11:21:07,748 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840260742] [2019-10-22 11:21:07,748 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 11:21:07,748 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:21:07,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 11:21:07,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-22 11:21:07,749 INFO L87 Difference]: Start difference. First operand 115 states and 156 transitions. Second operand 6 states. [2019-10-22 11:21:07,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:21:07,844 INFO L93 Difference]: Finished difference Result 430 states and 585 transitions. [2019-10-22 11:21:07,845 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 11:21:07,845 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2019-10-22 11:21:07,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:21:07,847 INFO L225 Difference]: With dead ends: 430 [2019-10-22 11:21:07,848 INFO L226 Difference]: Without dead ends: 321 [2019-10-22 11:21:07,848 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-22 11:21:07,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2019-10-22 11:21:07,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 121. [2019-10-22 11:21:07,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2019-10-22 11:21:07,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 162 transitions. [2019-10-22 11:21:07,880 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 162 transitions. Word has length 24 [2019-10-22 11:21:07,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:21:07,880 INFO L462 AbstractCegarLoop]: Abstraction has 121 states and 162 transitions. [2019-10-22 11:21:07,880 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 11:21:07,880 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 162 transitions. [2019-10-22 11:21:07,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-10-22 11:21:07,881 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:21:07,881 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:21:08,083 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:21:08,083 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:21:08,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:21:08,084 INFO L82 PathProgramCache]: Analyzing trace with hash -1137452915, now seen corresponding path program 1 times [2019-10-22 11:21:08,084 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:21:08,085 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1552503548] [2019-10-22 11:21:08,085 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a18de844-08f7-403f-abb9-aa9df1a9b241/bin/utaipan/cvc4 Starting monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:21:08,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:21:08,223 INFO L256 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-22 11:21:08,225 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:21:08,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:21:08,250 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:21:08,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:21:08,257 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1552503548] [2019-10-22 11:21:08,257 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:21:08,257 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-10-22 11:21:08,257 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647072568] [2019-10-22 11:21:08,258 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:21:08,258 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:21:08,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:21:08,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:21:08,259 INFO L87 Difference]: Start difference. First operand 121 states and 162 transitions. Second operand 5 states. [2019-10-22 11:21:08,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:21:08,371 INFO L93 Difference]: Finished difference Result 315 states and 414 transitions. [2019-10-22 11:21:08,371 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 11:21:08,372 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2019-10-22 11:21:08,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:21:08,373 INFO L225 Difference]: With dead ends: 315 [2019-10-22 11:21:08,373 INFO L226 Difference]: Without dead ends: 200 [2019-10-22 11:21:08,373 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-22 11:21:08,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2019-10-22 11:21:08,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 130. [2019-10-22 11:21:08,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2019-10-22 11:21:08,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 171 transitions. [2019-10-22 11:21:08,404 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 171 transitions. Word has length 24 [2019-10-22 11:21:08,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:21:08,404 INFO L462 AbstractCegarLoop]: Abstraction has 130 states and 171 transitions. [2019-10-22 11:21:08,404 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:21:08,404 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 171 transitions. [2019-10-22 11:21:08,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-10-22 11:21:08,405 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:21:08,405 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:21:08,608 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:21:08,609 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:21:08,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:21:08,610 INFO L82 PathProgramCache]: Analyzing trace with hash 1525058128, now seen corresponding path program 1 times [2019-10-22 11:21:08,610 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:21:08,610 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1490059447] [2019-10-22 11:21:08,610 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a18de844-08f7-403f-abb9-aa9df1a9b241/bin/utaipan/cvc4 Starting monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:21:08,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:21:08,745 INFO L256 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-22 11:21:08,747 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:21:08,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:21:08,775 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:21:08,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:21:08,808 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1490059447] [2019-10-22 11:21:08,808 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:21:08,809 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2019-10-22 11:21:08,809 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330196205] [2019-10-22 11:21:08,809 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-22 11:21:08,809 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:21:08,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 11:21:08,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-10-22 11:21:08,810 INFO L87 Difference]: Start difference. First operand 130 states and 171 transitions. Second operand 8 states. [2019-10-22 11:21:09,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:21:09,257 INFO L93 Difference]: Finished difference Result 682 states and 903 transitions. [2019-10-22 11:21:09,259 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2019-10-22 11:21:09,259 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 24 [2019-10-22 11:21:09,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:21:09,261 INFO L225 Difference]: With dead ends: 682 [2019-10-22 11:21:09,261 INFO L226 Difference]: Without dead ends: 517 [2019-10-22 11:21:09,262 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2019-10-22 11:21:09,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2019-10-22 11:21:09,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 242. [2019-10-22 11:21:09,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2019-10-22 11:21:09,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 312 transitions. [2019-10-22 11:21:09,306 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 312 transitions. Word has length 24 [2019-10-22 11:21:09,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:21:09,307 INFO L462 AbstractCegarLoop]: Abstraction has 242 states and 312 transitions. [2019-10-22 11:21:09,307 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-22 11:21:09,307 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 312 transitions. [2019-10-22 11:21:09,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-10-22 11:21:09,310 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:21:09,310 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:21:09,511 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:21:09,511 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:21:09,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:21:09,512 INFO L82 PathProgramCache]: Analyzing trace with hash -464337345, now seen corresponding path program 1 times [2019-10-22 11:21:09,512 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:21:09,512 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [72528947] [2019-10-22 11:21:09,512 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a18de844-08f7-403f-abb9-aa9df1a9b241/bin/utaipan/cvc4 Starting monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:21:09,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:21:09,659 INFO L256 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 11:21:09,661 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:21:09,669 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:21:09,670 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:21:09,674 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:21:09,674 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [72528947] [2019-10-22 11:21:09,674 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:21:09,674 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-10-22 11:21:09,675 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143449968] [2019-10-22 11:21:09,675 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:21:09,675 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:21:09,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:21:09,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:21:09,676 INFO L87 Difference]: Start difference. First operand 242 states and 312 transitions. Second operand 3 states. [2019-10-22 11:21:09,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:21:09,692 INFO L93 Difference]: Finished difference Result 242 states and 312 transitions. [2019-10-22 11:21:09,692 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:21:09,693 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 40 [2019-10-22 11:21:09,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:21:09,693 INFO L225 Difference]: With dead ends: 242 [2019-10-22 11:21:09,694 INFO L226 Difference]: Without dead ends: 120 [2019-10-22 11:21:09,694 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:21:09,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2019-10-22 11:21:09,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2019-10-22 11:21:09,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2019-10-22 11:21:09,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 160 transitions. [2019-10-22 11:21:09,709 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 160 transitions. Word has length 40 [2019-10-22 11:21:09,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:21:09,709 INFO L462 AbstractCegarLoop]: Abstraction has 120 states and 160 transitions. [2019-10-22 11:21:09,709 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:21:09,709 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 160 transitions. [2019-10-22 11:21:09,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-10-22 11:21:09,710 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:21:09,710 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:21:09,911 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:21:09,911 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:21:09,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:21:09,912 INFO L82 PathProgramCache]: Analyzing trace with hash 1693810360, now seen corresponding path program 1 times [2019-10-22 11:21:09,912 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:21:09,912 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1650521289] [2019-10-22 11:21:09,912 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a18de844-08f7-403f-abb9-aa9df1a9b241/bin/utaipan/cvc4 Starting monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:21:10,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:21:10,037 INFO L256 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-22 11:21:10,038 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:21:10,072 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-22 11:21:10,073 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:21:10,114 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-22 11:21:10,114 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1650521289] [2019-10-22 11:21:10,115 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1580622200] [2019-10-22 11:21:10,115 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a18de844-08f7-403f-abb9-aa9df1a9b241/bin/utaipan/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:21:10,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:21:10,202 INFO L256 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-22 11:21:10,203 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:21:10,214 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-22 11:21:10,214 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:21:10,220 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-22 11:21:10,220 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-22 11:21:10,221 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5] total 9 [2019-10-22 11:21:10,221 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395943020] [2019-10-22 11:21:10,221 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-22 11:21:10,222 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:21:10,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-22 11:21:10,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-10-22 11:21:10,222 INFO L87 Difference]: Start difference. First operand 120 states and 160 transitions. Second operand 10 states. [2019-10-22 11:21:10,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:21:10,875 INFO L93 Difference]: Finished difference Result 727 states and 1006 transitions. [2019-10-22 11:21:10,875 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-10-22 11:21:10,875 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 45 [2019-10-22 11:21:10,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:21:10,878 INFO L225 Difference]: With dead ends: 727 [2019-10-22 11:21:10,878 INFO L226 Difference]: Without dead ends: 636 [2019-10-22 11:21:10,879 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 166 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=198, Invalid=558, Unknown=0, NotChecked=0, Total=756 [2019-10-22 11:21:10,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2019-10-22 11:21:10,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 217. [2019-10-22 11:21:10,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2019-10-22 11:21:10,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 296 transitions. [2019-10-22 11:21:10,905 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 296 transitions. Word has length 45 [2019-10-22 11:21:10,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:21:10,905 INFO L462 AbstractCegarLoop]: Abstraction has 217 states and 296 transitions. [2019-10-22 11:21:10,905 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-22 11:21:10,905 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 296 transitions. [2019-10-22 11:21:10,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-10-22 11:21:10,906 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:21:10,906 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:21:11,307 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 cvc4 --incremental --print-success --lang smt --rewrite-divk,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:21:11,308 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:21:11,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:21:11,308 INFO L82 PathProgramCache]: Analyzing trace with hash 1880584764, now seen corresponding path program 2 times [2019-10-22 11:21:11,309 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:21:11,309 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [558201043] [2019-10-22 11:21:11,309 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_a18de844-08f7-403f-abb9-aa9df1a9b241/bin/utaipan/cvc4 Starting monitored process 11 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:21:13,066 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-10-22 11:21:13,066 INFO L250 tOrderPrioritization]: Conjunction of SSA is sat [2019-10-22 11:21:15,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 11:21:15,430 INFO L168 tionRefinementEngine]: Strategy WALRUS found a feasible trace [2019-10-22 11:21:15,430 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-22 11:21:15,631 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:21:15,777 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 11:21:15 BoogieIcfgContainer [2019-10-22 11:21:15,778 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 11:21:15,778 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 11:21:15,778 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 11:21:15,778 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 11:21:15,779 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:21:05" (3/4) ... [2019-10-22 11:21:15,781 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-10-22 11:21:15,929 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_a18de844-08f7-403f-abb9-aa9df1a9b241/bin/utaipan/witness.graphml [2019-10-22 11:21:15,929 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 11:21:15,931 INFO L168 Benchmark]: Toolchain (without parser) took 11540.71 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 221.2 MB). Free memory was 948.3 MB in the beginning and 849.0 MB in the end (delta: 99.3 MB). Peak memory consumption was 320.5 MB. Max. memory is 11.5 GB. [2019-10-22 11:21:15,932 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 977.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:21:15,932 INFO L168 Benchmark]: CACSL2BoogieTranslator took 541.18 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 159.4 MB). Free memory was 948.3 MB in the beginning and 1.1 GB in the end (delta: -193.1 MB). Peak memory consumption was 24.5 MB. Max. memory is 11.5 GB. [2019-10-22 11:21:15,932 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.35 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:21:15,932 INFO L168 Benchmark]: Boogie Preprocessor took 47.61 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: 8.2 MB). Peak memory consumption was 8.2 MB. Max. memory is 11.5 GB. [2019-10-22 11:21:15,932 INFO L168 Benchmark]: RCFGBuilder took 907.48 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: 64.2 MB). Peak memory consumption was 64.2 MB. Max. memory is 11.5 GB. [2019-10-22 11:21:15,933 INFO L168 Benchmark]: TraceAbstraction took 9827.91 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 61.9 MB). Free memory was 1.1 GB in the beginning and 870.3 MB in the end (delta: 198.8 MB). Peak memory consumption was 260.7 MB. Max. memory is 11.5 GB. [2019-10-22 11:21:15,933 INFO L168 Benchmark]: Witness Printer took 150.97 ms. Allocated memory is still 1.3 GB. Free memory was 870.3 MB in the beginning and 849.0 MB in the end (delta: 21.3 MB). Peak memory consumption was 21.3 MB. Max. memory is 11.5 GB. [2019-10-22 11:21:15,934 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 977.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 541.18 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 159.4 MB). Free memory was 948.3 MB in the beginning and 1.1 GB in the end (delta: -193.1 MB). Peak memory consumption was 24.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 58.35 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. * Boogie Preprocessor took 47.61 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: 8.2 MB). Peak memory consumption was 8.2 MB. Max. memory is 11.5 GB. * RCFGBuilder took 907.48 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: 64.2 MB). Peak memory consumption was 64.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 9827.91 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 61.9 MB). Free memory was 1.1 GB in the beginning and 870.3 MB in the end (delta: 198.8 MB). Peak memory consumption was 260.7 MB. Max. memory is 11.5 GB. * Witness Printer took 150.97 ms. Allocated memory is still 1.3 GB. Free memory was 870.3 MB in the beginning and 849.0 MB in the end (delta: 21.3 MB). Peak memory consumption was 21.3 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 869]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L209] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L406] int cleanupTimeShifts = 4; [L615] int waterLevel = 1; [L616] int methaneLevelCritical = 0; [L712] int pumpRunning = 0; [L713] int systemActive = 1; [L487] int retValue_acc ; [L488] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L536] int retValue_acc ; [L539] retValue_acc = 1 [L540] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L494] tmp = valid_product() [L496] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L546] int splverifierCounter ; [L547] int tmp ; [L548] int tmp___0 ; [L549] int tmp___1 ; [L550] int tmp___2 ; [L553] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L555] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L557] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L563] tmp = __VERIFIER_nondet_int() [L565] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L633] COND TRUE waterLevel < 2 [L634] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L573] tmp___0 = __VERIFIER_nondet_int() [L575] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L583] tmp___2 = __VERIFIER_nondet_int() [L585] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L720] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L727] COND TRUE \read(systemActive) [L749] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L752] COND TRUE ! pumpRunning [L846] int retValue_acc ; [L847] int tmp ; [L848] int tmp___0 ; [L695] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L698] COND FALSE !(waterLevel < 2) [L702] retValue_acc = 0 [L703] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L852] tmp = isHighWaterSensorDry() [L854] COND FALSE !(\read(tmp)) [L857] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L859] retValue_acc = tmp___0 [L860] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L754] tmp = isHighWaterLevel() [L756] COND TRUE \read(tmp) [L777] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L875] int tmp ; [L876] int tmp___0 ; [L686] int retValue_acc ; [L689] retValue_acc = waterLevel [L690] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L880] tmp = getWaterLevel() [L882] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L555] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L557] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L563] tmp = __VERIFIER_nondet_int() [L565] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L573] tmp___0 = __VERIFIER_nondet_int() [L575] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L583] tmp___2 = __VERIFIER_nondet_int() [L585] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L720] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L621] COND TRUE waterLevel > 0 [L622] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L727] COND TRUE \read(systemActive) [L749] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L752] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L875] int tmp ; [L876] int tmp___0 ; [L686] int retValue_acc ; [L689] retValue_acc = waterLevel [L690] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L880] tmp = getWaterLevel() [L882] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L555] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L557] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L563] tmp = __VERIFIER_nondet_int() [L565] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L573] tmp___0 = __VERIFIER_nondet_int() [L575] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L583] tmp___2 = __VERIFIER_nondet_int() [L585] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L720] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L621] COND TRUE waterLevel > 0 [L622] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L727] COND TRUE \read(systemActive) [L749] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L752] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L875] int tmp ; [L876] int tmp___0 ; [L686] int retValue_acc ; [L689] retValue_acc = waterLevel [L690] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L880] tmp = getWaterLevel() [L882] COND TRUE tmp == 0 [L801] int retValue_acc ; [L804] retValue_acc = pumpRunning [L805] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L884] tmp___0 = isPumpRunning() [L886] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L869] __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, 78 locations, 3 error locations. Result: UNSAFE, OverallTime: 9.7s, OverallIterations: 9, TraceHistogramMax: 3, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 884 SDtfs, 1961 SDslu, 2119 SDs, 0 SdLazy, 457 SolverSat, 133 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 519 GetRequests, 464 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 196 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=242occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 8 MinimizatonAttempts, 970 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 2.2s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 313 NumberOfCodeBlocks, 313 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 488 ConstructedInterpolants, 0 QuantifiedInterpolants, 48838 SizeOfPredicates, 21 NumberOfNonLiveVariables, 1722 ConjunctsInSsa, 37 ConjunctsInUnsatCore, 18 InterpolantComputations, 14 PerfectInterpolantSequences, 24/60 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...