./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product34.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_3d043e3f-8ed2-4fb1-939d-9f5eb20c52ab/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_3d043e3f-8ed2-4fb1-939d-9f5eb20c52ab/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_3d043e3f-8ed2-4fb1-939d-9f5eb20c52ab/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_3d043e3f-8ed2-4fb1-939d-9f5eb20c52ab/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product34.cil.c -s /tmp/vcloud-vcloud-master/worker/working_dir_3d043e3f-8ed2-4fb1-939d-9f5eb20c52ab/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_3d043e3f-8ed2-4fb1-939d-9f5eb20c52ab/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 feddb53df5c889a09349b532f3a03633c4161684 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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_3d043e3f-8ed2-4fb1-939d-9f5eb20c52ab/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_3d043e3f-8ed2-4fb1-939d-9f5eb20c52ab/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_3d043e3f-8ed2-4fb1-939d-9f5eb20c52ab/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_3d043e3f-8ed2-4fb1-939d-9f5eb20c52ab/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product34.cil.c -s /tmp/vcloud-vcloud-master/worker/working_dir_3d043e3f-8ed2-4fb1-939d-9f5eb20c52ab/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_3d043e3f-8ed2-4fb1-939d-9f5eb20c52ab/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 feddb53df5c889a09349b532f3a03633c4161684 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 11:25:41,911 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:25:41,912 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:25:41,923 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:25:41,923 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:25:41,924 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:25:41,925 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:25:41,926 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:25:41,927 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:25:41,927 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:25:41,928 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:25:41,930 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:25:41,930 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:25:41,931 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:25:41,931 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:25:41,932 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:25:41,933 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:25:41,933 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:25:41,934 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:25:41,942 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:25:41,944 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:25:41,947 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:25:41,948 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:25:41,949 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:25:41,950 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:25:41,951 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:25:41,951 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:25:41,955 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:25:41,956 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:25:41,957 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:25:41,957 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:25:41,958 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:25:41,958 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:25:41,959 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:25:41,961 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:25:41,962 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:25:41,962 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:25:41,962 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:25:41,963 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:25:41,963 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:25:41,964 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:25:41,964 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_3d043e3f-8ed2-4fb1-939d-9f5eb20c52ab/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-10-22 11:25:41,977 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:25:41,977 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:25:41,977 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:25:41,978 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:25:41,978 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:25:41,978 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:25:41,978 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-10-22 11:25:41,978 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:25:41,978 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:25:41,978 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-10-22 11:25:41,979 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-10-22 11:25:41,979 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:25:41,980 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:25:41,980 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:25:41,980 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 11:25:41,980 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:25:41,980 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:25:41,980 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:25:41,980 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:25:41,981 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:25:41,981 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:25:41,981 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:25:41,981 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:25:41,981 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:25:41,981 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:25:41,981 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:25:41,982 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:25:41,982 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:25:41,982 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:25:41,982 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:25:41,982 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:25:41,982 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-22 11:25:41,982 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 11:25:41,983 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:25:41,983 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:25:41,983 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_3d043e3f-8ed2-4fb1-939d-9f5eb20c52ab/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 -> feddb53df5c889a09349b532f3a03633c4161684 [2019-10-22 11:25:42,010 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:25:42,021 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:25:42,024 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:25:42,026 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:25:42,026 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:25:42,027 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_3d043e3f-8ed2-4fb1-939d-9f5eb20c52ab/bin/utaipan/../../sv-benchmarks/c/product-lines/minepump_spec4_product34.cil.c [2019-10-22 11:25:42,073 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_3d043e3f-8ed2-4fb1-939d-9f5eb20c52ab/bin/utaipan/data/13a8fbb84/e75b6dfc7ded481c9ca632a2d5321603/FLAG94361fd19 [2019-10-22 11:25:42,554 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:25:42,555 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_3d043e3f-8ed2-4fb1-939d-9f5eb20c52ab/sv-benchmarks/c/product-lines/minepump_spec4_product34.cil.c [2019-10-22 11:25:42,572 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_3d043e3f-8ed2-4fb1-939d-9f5eb20c52ab/bin/utaipan/data/13a8fbb84/e75b6dfc7ded481c9ca632a2d5321603/FLAG94361fd19 [2019-10-22 11:25:42,888 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_3d043e3f-8ed2-4fb1-939d-9f5eb20c52ab/bin/utaipan/data/13a8fbb84/e75b6dfc7ded481c9ca632a2d5321603 [2019-10-22 11:25:42,890 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:25:42,891 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:25:42,892 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:25:42,892 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:25:42,895 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:25:42,896 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:25:42" (1/1) ... [2019-10-22 11:25:42,898 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4deedcda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:42, skipping insertion in model container [2019-10-22 11:25:42,898 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:25:42" (1/1) ... [2019-10-22 11:25:42,905 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:25:42,956 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:25:43,305 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:25:43,320 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:25:43,407 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:25:43,438 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:25:43,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:43 WrapperNode [2019-10-22 11:25:43,439 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:25:43,439 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:25:43,440 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:25:43,440 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:25:43,447 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:43" (1/1) ... [2019-10-22 11:25:43,459 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:43" (1/1) ... [2019-10-22 11:25:43,492 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:25:43,492 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:25:43,493 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:25:43,493 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:25:43,503 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:43" (1/1) ... [2019-10-22 11:25:43,503 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:43" (1/1) ... [2019-10-22 11:25:43,506 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:43" (1/1) ... [2019-10-22 11:25:43,507 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:43" (1/1) ... [2019-10-22 11:25:43,522 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:43" (1/1) ... [2019-10-22 11:25:43,528 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:43" (1/1) ... [2019-10-22 11:25:43,530 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:43" (1/1) ... [2019-10-22 11:25:43,533 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:25:43,533 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:25:43,534 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:25:43,534 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:25:43,534 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:43" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3d043e3f-8ed2-4fb1-939d-9f5eb20c52ab/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 11:25:43,585 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 11:25:43,585 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-22 11:25:43,586 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:25:43,586 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:25:44,204 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:25:44,204 INFO L284 CfgBuilder]: Removed 98 assume(true) statements. [2019-10-22 11:25:44,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:25:44 BoogieIcfgContainer [2019-10-22 11:25:44,205 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:25:44,206 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:25:44,206 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:25:44,209 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:25:44,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:25:42" (1/3) ... [2019-10-22 11:25:44,210 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b2ee905 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:25:44, skipping insertion in model container [2019-10-22 11:25:44,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:43" (2/3) ... [2019-10-22 11:25:44,211 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b2ee905 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:25:44, skipping insertion in model container [2019-10-22 11:25:44,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:25:44" (3/3) ... [2019-10-22 11:25:44,213 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product34.cil.c [2019-10-22 11:25:44,222 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:25:44,229 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-10-22 11:25:44,240 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-10-22 11:25:44,265 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:25:44,265 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:25:44,265 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:25:44,265 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:25:44,266 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:25:44,266 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:25:44,266 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:25:44,266 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:25:44,282 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states. [2019-10-22 11:25:44,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-22 11:25:44,292 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:44,293 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:25:44,295 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:25:44,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:44,302 INFO L82 PathProgramCache]: Analyzing trace with hash 1424204181, now seen corresponding path program 1 times [2019-10-22 11:25:44,308 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:25:44,308 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831302238] [2019-10-22 11:25:44,308 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:44,308 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:44,308 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:25:44,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:44,519 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 11:25:44,521 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831302238] [2019-10-22 11:25:44,521 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:25:44,521 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 11:25:44,522 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277225388] [2019-10-22 11:25:44,525 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-22 11:25:44,526 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:25:44,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-22 11:25:44,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 11:25:44,541 INFO L87 Difference]: Start difference. First operand 78 states. Second operand 2 states. [2019-10-22 11:25:44,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:25:44,563 INFO L93 Difference]: Finished difference Result 150 states and 227 transitions. [2019-10-22 11:25:44,564 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 11:25:44,565 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2019-10-22 11:25:44,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:25:44,574 INFO L225 Difference]: With dead ends: 150 [2019-10-22 11:25:44,575 INFO L226 Difference]: Without dead ends: 74 [2019-10-22 11:25:44,577 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 11:25:44,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2019-10-22 11:25:44,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2019-10-22 11:25:44,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2019-10-22 11:25:44,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 105 transitions. [2019-10-22 11:25:44,616 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 105 transitions. Word has length 16 [2019-10-22 11:25:44,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:25:44,617 INFO L462 AbstractCegarLoop]: Abstraction has 74 states and 105 transitions. [2019-10-22 11:25:44,617 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-22 11:25:44,617 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 105 transitions. [2019-10-22 11:25:44,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-22 11:25:44,617 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:44,617 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 11:25:44,618 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:25:44,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:44,618 INFO L82 PathProgramCache]: Analyzing trace with hash -631654862, now seen corresponding path program 1 times [2019-10-22 11:25:44,618 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:25:44,618 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1754896222] [2019-10-22 11:25:44,618 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:44,618 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:44,619 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:25:44,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:44,738 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 11:25:44,738 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1754896222] [2019-10-22 11:25:44,738 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:25:44,738 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 11:25:44,739 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186115815] [2019-10-22 11:25:44,740 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:25:44,740 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:25:44,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:25:44,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:25:44,741 INFO L87 Difference]: Start difference. First operand 74 states and 105 transitions. Second operand 3 states. [2019-10-22 11:25:44,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:25:44,750 INFO L93 Difference]: Finished difference Result 74 states and 105 transitions. [2019-10-22 11:25:44,750 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:25:44,751 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2019-10-22 11:25:44,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:25:44,751 INFO L225 Difference]: With dead ends: 74 [2019-10-22 11:25:44,751 INFO L226 Difference]: Without dead ends: 34 [2019-10-22 11:25:44,752 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 11:25:44,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-10-22 11:25:44,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2019-10-22 11:25:44,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-10-22 11:25:44,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 48 transitions. [2019-10-22 11:25:44,757 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 48 transitions. Word has length 17 [2019-10-22 11:25:44,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:25:44,757 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 48 transitions. [2019-10-22 11:25:44,757 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:25:44,757 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 48 transitions. [2019-10-22 11:25:44,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-10-22 11:25:44,758 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:44,758 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 11:25:44,758 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:25:44,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:44,759 INFO L82 PathProgramCache]: Analyzing trace with hash -964945646, now seen corresponding path program 1 times [2019-10-22 11:25:44,759 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:25:44,759 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145764130] [2019-10-22 11:25:44,759 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:44,760 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:44,760 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:25:44,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:44,847 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 11:25:44,847 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145764130] [2019-10-22 11:25:44,847 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:25:44,847 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 11:25:44,848 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269231348] [2019-10-22 11:25:44,848 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:25:44,848 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:25:44,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:25:44,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:25:44,849 INFO L87 Difference]: Start difference. First operand 34 states and 48 transitions. Second operand 5 states. [2019-10-22 11:25:44,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:25:44,903 INFO L93 Difference]: Finished difference Result 62 states and 90 transitions. [2019-10-22 11:25:44,905 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 11:25:44,906 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2019-10-22 11:25:44,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:25:44,906 INFO L225 Difference]: With dead ends: 62 [2019-10-22 11:25:44,906 INFO L226 Difference]: Without dead ends: 34 [2019-10-22 11:25:44,907 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 11:25:44,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-10-22 11:25:44,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2019-10-22 11:25:44,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-10-22 11:25:44,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 47 transitions. [2019-10-22 11:25:44,911 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 47 transitions. Word has length 22 [2019-10-22 11:25:44,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:25:44,912 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 47 transitions. [2019-10-22 11:25:44,912 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:25:44,912 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 47 transitions. [2019-10-22 11:25:44,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-10-22 11:25:44,912 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:44,913 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 11:25:44,913 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:25:44,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:44,913 INFO L82 PathProgramCache]: Analyzing trace with hash -952202930, now seen corresponding path program 1 times [2019-10-22 11:25:44,913 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:25:44,913 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889832340] [2019-10-22 11:25:44,914 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:44,914 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:44,914 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:25:44,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:44,989 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 11:25:44,989 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889832340] [2019-10-22 11:25:44,989 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:25:44,989 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 11:25:44,990 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677466998] [2019-10-22 11:25:44,990 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:25:44,990 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:25:44,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:25:44,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:25:44,991 INFO L87 Difference]: Start difference. First operand 34 states and 47 transitions. Second operand 3 states. [2019-10-22 11:25:45,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:25:45,009 INFO L93 Difference]: Finished difference Result 83 states and 118 transitions. [2019-10-22 11:25:45,010 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:25:45,010 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2019-10-22 11:25:45,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:25:45,011 INFO L225 Difference]: With dead ends: 83 [2019-10-22 11:25:45,011 INFO L226 Difference]: Without dead ends: 55 [2019-10-22 11:25:45,011 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 11:25:45,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2019-10-22 11:25:45,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 53. [2019-10-22 11:25:45,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2019-10-22 11:25:45,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 74 transitions. [2019-10-22 11:25:45,023 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 74 transitions. Word has length 23 [2019-10-22 11:25:45,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:25:45,024 INFO L462 AbstractCegarLoop]: Abstraction has 53 states and 74 transitions. [2019-10-22 11:25:45,024 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:25:45,024 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 74 transitions. [2019-10-22 11:25:45,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-10-22 11:25:45,025 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:45,025 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 11:25:45,025 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:25:45,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:45,025 INFO L82 PathProgramCache]: Analyzing trace with hash -2049720417, now seen corresponding path program 1 times [2019-10-22 11:25:45,026 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:25:45,026 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022897045] [2019-10-22 11:25:45,026 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:45,026 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:45,026 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:25:45,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:45,112 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 11:25:45,113 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022897045] [2019-10-22 11:25:45,113 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:25:45,113 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 11:25:45,113 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276817927] [2019-10-22 11:25:45,114 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:25:45,114 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:25:45,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:25:45,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:25:45,114 INFO L87 Difference]: Start difference. First operand 53 states and 74 transitions. Second operand 5 states. [2019-10-22 11:25:45,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:25:45,177 INFO L93 Difference]: Finished difference Result 139 states and 194 transitions. [2019-10-22 11:25:45,179 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 11:25:45,179 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2019-10-22 11:25:45,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:25:45,180 INFO L225 Difference]: With dead ends: 139 [2019-10-22 11:25:45,180 INFO L226 Difference]: Without dead ends: 92 [2019-10-22 11:25:45,181 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 11:25:45,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2019-10-22 11:25:45,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 56. [2019-10-22 11:25:45,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2019-10-22 11:25:45,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 77 transitions. [2019-10-22 11:25:45,189 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 77 transitions. Word has length 29 [2019-10-22 11:25:45,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:25:45,189 INFO L462 AbstractCegarLoop]: Abstraction has 56 states and 77 transitions. [2019-10-22 11:25:45,189 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:25:45,189 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 77 transitions. [2019-10-22 11:25:45,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-10-22 11:25:45,190 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:45,190 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 11:25:45,190 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:25:45,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:45,191 INFO L82 PathProgramCache]: Analyzing trace with hash 612790626, now seen corresponding path program 1 times [2019-10-22 11:25:45,191 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:25:45,191 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901067792] [2019-10-22 11:25:45,191 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:45,193 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:45,194 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:25:45,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:45,287 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 11:25:45,288 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901067792] [2019-10-22 11:25:45,288 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:25:45,288 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-10-22 11:25:45,288 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316138985] [2019-10-22 11:25:45,288 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-22 11:25:45,289 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:25:45,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 11:25:45,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-22 11:25:45,289 INFO L87 Difference]: Start difference. First operand 56 states and 77 transitions. Second operand 8 states. [2019-10-22 11:25:45,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:25:45,606 INFO L93 Difference]: Finished difference Result 347 states and 497 transitions. [2019-10-22 11:25:45,608 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-22 11:25:45,609 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 29 [2019-10-22 11:25:45,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:25:45,610 INFO L225 Difference]: With dead ends: 347 [2019-10-22 11:25:45,611 INFO L226 Difference]: Without dead ends: 297 [2019-10-22 11:25:45,611 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2019-10-22 11:25:45,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2019-10-22 11:25:45,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 140. [2019-10-22 11:25:45,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2019-10-22 11:25:45,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 190 transitions. [2019-10-22 11:25:45,648 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 190 transitions. Word has length 29 [2019-10-22 11:25:45,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:25:45,655 INFO L462 AbstractCegarLoop]: Abstraction has 140 states and 190 transitions. [2019-10-22 11:25:45,655 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-22 11:25:45,655 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 190 transitions. [2019-10-22 11:25:45,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2019-10-22 11:25:45,657 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:45,657 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:25:45,657 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:25:45,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:45,657 INFO L82 PathProgramCache]: Analyzing trace with hash -230943976, now seen corresponding path program 1 times [2019-10-22 11:25:45,658 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:25:45,658 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163338643] [2019-10-22 11:25:45,658 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:45,658 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:45,658 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:25:45,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:45,726 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-22 11:25:45,726 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163338643] [2019-10-22 11:25:45,726 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:25:45,726 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-22 11:25:45,727 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112052602] [2019-10-22 11:25:45,727 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 11:25:45,727 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:25:45,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 11:25:45,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-22 11:25:45,728 INFO L87 Difference]: Start difference. First operand 140 states and 190 transitions. Second operand 6 states. [2019-10-22 11:25:45,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:25:45,799 INFO L93 Difference]: Finished difference Result 325 states and 442 transitions. [2019-10-22 11:25:45,799 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-22 11:25:45,800 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 44 [2019-10-22 11:25:45,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:25:45,801 INFO L225 Difference]: With dead ends: 325 [2019-10-22 11:25:45,801 INFO L226 Difference]: Without dead ends: 191 [2019-10-22 11:25:45,801 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2019-10-22 11:25:45,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2019-10-22 11:25:45,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 120. [2019-10-22 11:25:45,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2019-10-22 11:25:45,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 160 transitions. [2019-10-22 11:25:45,816 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 160 transitions. Word has length 44 [2019-10-22 11:25:45,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:25:45,817 INFO L462 AbstractCegarLoop]: Abstraction has 120 states and 160 transitions. [2019-10-22 11:25:45,817 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 11:25:45,817 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 160 transitions. [2019-10-22 11:25:45,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-10-22 11:25:45,818 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:45,818 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 11:25:45,818 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:25:45,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:45,819 INFO L82 PathProgramCache]: Analyzing trace with hash -187398120, now seen corresponding path program 1 times [2019-10-22 11:25:45,819 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:25:45,819 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853151612] [2019-10-22 11:25:45,819 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:45,820 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:45,820 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:25:45,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:45,878 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 11:25:45,879 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853151612] [2019-10-22 11:25:45,879 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1705254807] [2019-10-22 11:25:45,879 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3d043e3f-8ed2-4fb1-939d-9f5eb20c52ab/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 11:25:45,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:45,990 INFO L256 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-22 11:25:45,997 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:25:46,036 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 11:25:46,036 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:25:46,065 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 11:25:46,066 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [996334057] [2019-10-22 11:25:46,071 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 46 [2019-10-22 11:25:46,108 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2019-10-22 11:25:46,109 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-22 11:25:46,521 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:25:46,521 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 11:25:46,527 INFO L168 Benchmark]: Toolchain (without parser) took 3635.19 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 110.1 MB). Free memory was 943.2 MB in the beginning and 780.6 MB in the end (delta: 162.5 MB). Peak memory consumption was 272.6 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:46,527 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 962.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:25:46,527 INFO L168 Benchmark]: CACSL2BoogieTranslator took 547.03 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 110.1 MB). Free memory was 937.8 MB in the beginning and 1.1 GB in the end (delta: -154.6 MB). Peak memory consumption was 17.5 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:46,528 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.76 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:46,528 INFO L168 Benchmark]: Boogie Preprocessor took 40.74 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:25:46,528 INFO L168 Benchmark]: RCFGBuilder took 671.88 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 56.4 MB). Peak memory consumption was 56.4 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:46,529 INFO L168 Benchmark]: TraceAbstraction took 2319.23 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 780.6 MB in the end (delta: 248.5 MB). Peak memory consumption was 248.5 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:46,530 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 962.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 547.03 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 110.1 MB). Free memory was 937.8 MB in the beginning and 1.1 GB in the end (delta: -154.6 MB). Peak memory consumption was 17.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 52.76 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.9 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 40.74 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 671.88 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 56.4 MB). Peak memory consumption was 56.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2319.23 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 780.6 MB in the end (delta: 248.5 MB). Peak memory consumption was 248.5 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: inappropriate decl info IMPLEMENTATION de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: inappropriate decl info IMPLEMENTATION: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Boogie2SmtSymbolTable.getBoogieVar(Boogie2SmtSymbolTable.java:222) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-cad4683 [2019-10-22 11:25:48,561 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:25:48,562 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:25:48,571 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:25:48,571 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:25:48,572 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:25:48,573 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:25:48,574 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:25:48,575 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:25:48,581 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:25:48,581 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:25:48,582 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:25:48,582 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:25:48,583 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:25:48,583 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:25:48,584 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:25:48,585 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:25:48,585 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:25:48,586 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:25:48,589 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:25:48,591 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:25:48,591 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:25:48,592 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:25:48,593 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:25:48,594 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:25:48,594 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:25:48,595 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:25:48,598 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:25:48,599 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:25:48,600 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:25:48,600 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:25:48,600 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:25:48,601 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:25:48,601 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:25:48,602 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:25:48,602 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:25:48,603 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:25:48,603 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:25:48,603 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:25:48,604 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:25:48,605 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:25:48,606 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_3d043e3f-8ed2-4fb1-939d-9f5eb20c52ab/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2019-10-22 11:25:48,619 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:25:48,619 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:25:48,619 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:25:48,619 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:25:48,620 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:25:48,620 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:25:48,620 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:25:48,620 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:25:48,620 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:25:48,621 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:25:48,621 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:25:48,621 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:25:48,621 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:25:48,621 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:25:48,621 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:25:48,622 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:25:48,622 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-10-22 11:25:48,622 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-10-22 11:25:48,622 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:25:48,622 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:25:48,622 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 11:25:48,622 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:25:48,622 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:25:48,623 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:25:48,623 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:25:48,623 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:25:48,623 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:25:48,623 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:25:48,623 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:25:48,624 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:25:48,624 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-10-22 11:25:48,624 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-10-22 11:25:48,624 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:25:48,624 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:25:48,624 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_3d043e3f-8ed2-4fb1-939d-9f5eb20c52ab/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 -> feddb53df5c889a09349b532f3a03633c4161684 [2019-10-22 11:25:48,657 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:25:48,669 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:25:48,672 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:25:48,673 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:25:48,673 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:25:48,674 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_3d043e3f-8ed2-4fb1-939d-9f5eb20c52ab/bin/utaipan/../../sv-benchmarks/c/product-lines/minepump_spec4_product34.cil.c [2019-10-22 11:25:48,724 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_3d043e3f-8ed2-4fb1-939d-9f5eb20c52ab/bin/utaipan/data/e63f8b861/2bdc0b15afab49b585a619604f875ec9/FLAGe41baf165 [2019-10-22 11:25:49,177 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:25:49,177 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_3d043e3f-8ed2-4fb1-939d-9f5eb20c52ab/sv-benchmarks/c/product-lines/minepump_spec4_product34.cil.c [2019-10-22 11:25:49,189 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_3d043e3f-8ed2-4fb1-939d-9f5eb20c52ab/bin/utaipan/data/e63f8b861/2bdc0b15afab49b585a619604f875ec9/FLAGe41baf165 [2019-10-22 11:25:49,693 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_3d043e3f-8ed2-4fb1-939d-9f5eb20c52ab/bin/utaipan/data/e63f8b861/2bdc0b15afab49b585a619604f875ec9 [2019-10-22 11:25:49,696 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:25:49,697 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:25:49,698 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:25:49,699 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:25:49,702 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:25:49,702 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:25:49" (1/1) ... [2019-10-22 11:25:49,705 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d413584 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:49, skipping insertion in model container [2019-10-22 11:25:49,705 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:25:49" (1/1) ... [2019-10-22 11:25:49,711 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:25:49,744 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:25:49,985 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:25:50,061 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:25:50,128 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:25:50,152 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:25:50,153 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:50 WrapperNode [2019-10-22 11:25:50,153 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:25:50,154 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:25:50,154 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:25:50,154 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:25:50,161 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:50" (1/1) ... [2019-10-22 11:25:50,179 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:50" (1/1) ... [2019-10-22 11:25:50,206 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:25:50,207 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:25:50,207 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:25:50,207 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:25:50,215 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:50" (1/1) ... [2019-10-22 11:25:50,216 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:50" (1/1) ... [2019-10-22 11:25:50,219 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:50" (1/1) ... [2019-10-22 11:25:50,219 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:50" (1/1) ... [2019-10-22 11:25:50,227 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:50" (1/1) ... [2019-10-22 11:25:50,232 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:50" (1/1) ... [2019-10-22 11:25:50,234 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:50" (1/1) ... [2019-10-22 11:25:50,237 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:25:50,237 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:25:50,237 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:25:50,238 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:25:50,238 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:50" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3d043e3f-8ed2-4fb1-939d-9f5eb20c52ab/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 11:25:50,294 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 11:25:50,295 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2019-10-22 11:25:50,295 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:25:50,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:25:51,031 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:25:51,032 INFO L284 CfgBuilder]: Removed 98 assume(true) statements. [2019-10-22 11:25:51,033 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:25:51 BoogieIcfgContainer [2019-10-22 11:25:51,033 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:25:51,034 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:25:51,034 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:25:51,037 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:25:51,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:25:49" (1/3) ... [2019-10-22 11:25:51,038 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7984d04e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:25:51, skipping insertion in model container [2019-10-22 11:25:51,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:50" (2/3) ... [2019-10-22 11:25:51,039 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7984d04e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:25:51, skipping insertion in model container [2019-10-22 11:25:51,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:25:51" (3/3) ... [2019-10-22 11:25:51,040 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product34.cil.c [2019-10-22 11:25:51,050 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:25:51,058 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-10-22 11:25:51,071 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-10-22 11:25:51,097 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:25:51,097 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:25:51,097 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:25:51,097 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:25:51,098 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:25:51,098 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:25:51,098 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:25:51,098 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:25:51,112 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states. [2019-10-22 11:25:51,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-22 11:25:51,118 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:51,119 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:25:51,122 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:25:51,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:51,127 INFO L82 PathProgramCache]: Analyzing trace with hash 1424204181, now seen corresponding path program 1 times [2019-10-22 11:25:51,140 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:25:51,140 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1349257352] [2019-10-22 11:25:51,140 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3d043e3f-8ed2-4fb1-939d-9f5eb20c52ab/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 11:25:51,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:51,346 INFO L256 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 1 conjunts are in the unsatisfiable core [2019-10-22 11:25:51,350 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:25:51,364 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 11:25:51,365 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:25:51,369 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 11:25:51,372 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1349257352] [2019-10-22 11:25:51,372 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:25:51,372 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-10-22 11:25:51,373 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060829990] [2019-10-22 11:25:51,377 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-22 11:25:51,377 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:25:51,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-22 11:25:51,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 11:25:51,388 INFO L87 Difference]: Start difference. First operand 78 states. Second operand 2 states. [2019-10-22 11:25:51,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:25:51,410 INFO L93 Difference]: Finished difference Result 150 states and 227 transitions. [2019-10-22 11:25:51,411 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 11:25:51,412 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2019-10-22 11:25:51,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:25:51,421 INFO L225 Difference]: With dead ends: 150 [2019-10-22 11:25:51,421 INFO L226 Difference]: Without dead ends: 74 [2019-10-22 11:25:51,425 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 11:25:51,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2019-10-22 11:25:51,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2019-10-22 11:25:51,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2019-10-22 11:25:51,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 105 transitions. [2019-10-22 11:25:51,461 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 105 transitions. Word has length 16 [2019-10-22 11:25:51,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:25:51,461 INFO L462 AbstractCegarLoop]: Abstraction has 74 states and 105 transitions. [2019-10-22 11:25:51,461 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-22 11:25:51,461 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 105 transitions. [2019-10-22 11:25:51,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-22 11:25:51,462 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:51,462 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 11:25:51,663 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:25:51,664 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:25:51,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:51,664 INFO L82 PathProgramCache]: Analyzing trace with hash -631654862, now seen corresponding path program 1 times [2019-10-22 11:25:51,665 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:25:51,665 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [2124231988] [2019-10-22 11:25:51,665 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3d043e3f-8ed2-4fb1-939d-9f5eb20c52ab/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 11:25:51,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:51,800 INFO L256 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 11:25:51,802 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:25:51,819 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 11:25:51,819 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:25:51,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:25:51,827 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2124231988] [2019-10-22 11:25:51,827 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:25:51,827 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2019-10-22 11:25:51,828 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900286505] [2019-10-22 11:25:51,829 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 11:25:51,829 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:25:51,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 11:25:51,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-22 11:25:51,830 INFO L87 Difference]: Start difference. First operand 74 states and 105 transitions. Second operand 4 states. [2019-10-22 11:25:51,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:25:51,856 INFO L93 Difference]: Finished difference Result 142 states and 204 transitions. [2019-10-22 11:25:51,857 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:25:51,857 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2019-10-22 11:25:51,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:25:51,858 INFO L225 Difference]: With dead ends: 142 [2019-10-22 11:25:51,858 INFO L226 Difference]: Without dead ends: 74 [2019-10-22 11:25:51,859 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 11:25:51,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2019-10-22 11:25:51,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2019-10-22 11:25:51,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2019-10-22 11:25:51,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 102 transitions. [2019-10-22 11:25:51,869 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 102 transitions. Word has length 17 [2019-10-22 11:25:51,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:25:51,869 INFO L462 AbstractCegarLoop]: Abstraction has 74 states and 102 transitions. [2019-10-22 11:25:51,869 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 11:25:51,869 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 102 transitions. [2019-10-22 11:25:51,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-10-22 11:25:51,870 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:51,870 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 11:25:52,071 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:25:52,071 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:25:52,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:52,072 INFO L82 PathProgramCache]: Analyzing trace with hash 789876860, now seen corresponding path program 1 times [2019-10-22 11:25:52,072 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:25:52,073 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1804643229] [2019-10-22 11:25:52,073 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3d043e3f-8ed2-4fb1-939d-9f5eb20c52ab/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 11:25:52,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:52,226 INFO L256 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 11:25:52,227 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:25:52,239 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 11:25:52,239 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:25:52,241 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 11:25:52,241 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1804643229] [2019-10-22 11:25:52,241 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:25:52,241 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-10-22 11:25:52,242 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373884080] [2019-10-22 11:25:52,242 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:25:52,242 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:25:52,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:25:52,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:25:52,243 INFO L87 Difference]: Start difference. First operand 74 states and 102 transitions. Second operand 3 states. [2019-10-22 11:25:52,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:25:52,345 INFO L93 Difference]: Finished difference Result 189 states and 261 transitions. [2019-10-22 11:25:52,346 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:25:52,346 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2019-10-22 11:25:52,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:25:52,347 INFO L225 Difference]: With dead ends: 189 [2019-10-22 11:25:52,347 INFO L226 Difference]: Without dead ends: 121 [2019-10-22 11:25:52,348 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 11:25:52,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2019-10-22 11:25:52,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 115. [2019-10-22 11:25:52,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2019-10-22 11:25:52,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 156 transitions. [2019-10-22 11:25:52,370 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 156 transitions. Word has length 18 [2019-10-22 11:25:52,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:25:52,370 INFO L462 AbstractCegarLoop]: Abstraction has 115 states and 156 transitions. [2019-10-22 11:25:52,370 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:25:52,370 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 156 transitions. [2019-10-22 11:25:52,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-10-22 11:25:52,371 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:52,371 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 11:25:52,575 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:25:52,576 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:25:52,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:52,576 INFO L82 PathProgramCache]: Analyzing trace with hash -1951336051, now seen corresponding path program 1 times [2019-10-22 11:25:52,577 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:25:52,577 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1521776850] [2019-10-22 11:25:52,577 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3d043e3f-8ed2-4fb1-939d-9f5eb20c52ab/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 11:25:52,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:52,708 INFO L256 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-22 11:25:52,709 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:25:52,731 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 11:25:52,732 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:25:52,739 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 11:25:52,739 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1521776850] [2019-10-22 11:25:52,739 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:25:52,740 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-10-22 11:25:52,740 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257603275] [2019-10-22 11:25:52,740 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:25:52,740 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:25:52,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:25:52,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:25:52,741 INFO L87 Difference]: Start difference. First operand 115 states and 156 transitions. Second operand 5 states. [2019-10-22 11:25:52,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:25:52,862 INFO L93 Difference]: Finished difference Result 303 states and 402 transitions. [2019-10-22 11:25:52,863 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 11:25:52,864 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2019-10-22 11:25:52,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:25:52,865 INFO L225 Difference]: With dead ends: 303 [2019-10-22 11:25:52,865 INFO L226 Difference]: Without dead ends: 194 [2019-10-22 11:25:52,866 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 11:25:52,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2019-10-22 11:25:52,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 124. [2019-10-22 11:25:52,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2019-10-22 11:25:52,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 165 transitions. [2019-10-22 11:25:52,898 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 165 transitions. Word has length 24 [2019-10-22 11:25:52,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:25:52,899 INFO L462 AbstractCegarLoop]: Abstraction has 124 states and 165 transitions. [2019-10-22 11:25:52,899 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:25:52,899 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 165 transitions. [2019-10-22 11:25:52,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-10-22 11:25:52,900 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:52,900 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 11:25:53,101 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:25:53,102 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:25:53,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:53,102 INFO L82 PathProgramCache]: Analyzing trace with hash 711174992, now seen corresponding path program 1 times [2019-10-22 11:25:53,103 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:25:53,103 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [344742939] [2019-10-22 11:25:53,103 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3d043e3f-8ed2-4fb1-939d-9f5eb20c52ab/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 11:25:53,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:53,241 INFO L256 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-22 11:25:53,242 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:25:53,263 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 11:25:53,263 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:25:53,288 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 11:25:53,289 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [344742939] [2019-10-22 11:25:53,289 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:25:53,289 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2019-10-22 11:25:53,289 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638376450] [2019-10-22 11:25:53,289 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-22 11:25:53,290 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:25:53,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 11:25:53,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-10-22 11:25:53,290 INFO L87 Difference]: Start difference. First operand 124 states and 165 transitions. Second operand 8 states. [2019-10-22 11:25:53,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:25:53,689 INFO L93 Difference]: Finished difference Result 809 states and 1097 transitions. [2019-10-22 11:25:53,689 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-22 11:25:53,689 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 24 [2019-10-22 11:25:53,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:25:53,692 INFO L225 Difference]: With dead ends: 809 [2019-10-22 11:25:53,695 INFO L226 Difference]: Without dead ends: 691 [2019-10-22 11:25:53,696 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2019-10-22 11:25:53,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2019-10-22 11:25:53,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 316. [2019-10-22 11:25:53,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 316 states. [2019-10-22 11:25:53,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 408 transitions. [2019-10-22 11:25:53,756 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 408 transitions. Word has length 24 [2019-10-22 11:25:53,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:25:53,757 INFO L462 AbstractCegarLoop]: Abstraction has 316 states and 408 transitions. [2019-10-22 11:25:53,757 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-22 11:25:53,758 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 408 transitions. [2019-10-22 11:25:53,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-10-22 11:25:53,759 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:53,759 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:25:53,961 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:25:53,961 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:25:53,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:53,962 INFO L82 PathProgramCache]: Analyzing trace with hash -699781371, now seen corresponding path program 1 times [2019-10-22 11:25:53,962 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:25:53,962 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [944256521] [2019-10-22 11:25:53,962 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3d043e3f-8ed2-4fb1-939d-9f5eb20c52ab/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 11:25:54,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:54,095 INFO L256 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-22 11:25:54,097 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:25:54,107 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 11:25:54,108 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:25:54,122 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 11:25:54,122 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [944256521] [2019-10-22 11:25:54,122 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:25:54,122 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-10-22 11:25:54,123 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728493997] [2019-10-22 11:25:54,123 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 11:25:54,123 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:25:54,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 11:25:54,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-22 11:25:54,124 INFO L87 Difference]: Start difference. First operand 316 states and 408 transitions. Second operand 6 states. [2019-10-22 11:25:54,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:25:54,217 INFO L93 Difference]: Finished difference Result 707 states and 904 transitions. [2019-10-22 11:25:54,218 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 11:25:54,218 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35 [2019-10-22 11:25:54,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:25:54,219 INFO L225 Difference]: With dead ends: 707 [2019-10-22 11:25:54,219 INFO L226 Difference]: Without dead ends: 363 [2019-10-22 11:25:54,220 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 65 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 11:25:54,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2019-10-22 11:25:54,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 242. [2019-10-22 11:25:54,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2019-10-22 11:25:54,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 312 transitions. [2019-10-22 11:25:54,241 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 312 transitions. Word has length 35 [2019-10-22 11:25:54,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:25:54,241 INFO L462 AbstractCegarLoop]: Abstraction has 242 states and 312 transitions. [2019-10-22 11:25:54,241 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 11:25:54,241 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 312 transitions. [2019-10-22 11:25:54,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-10-22 11:25:54,242 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:54,242 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 11:25:54,443 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:25:54,443 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:25:54,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:54,444 INFO L82 PathProgramCache]: Analyzing trace with hash -442148640, now seen corresponding path program 1 times [2019-10-22 11:25:54,444 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:25:54,444 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [508275725] [2019-10-22 11:25:54,444 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3d043e3f-8ed2-4fb1-939d-9f5eb20c52ab/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 11:25:54,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:54,580 INFO L256 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 11:25:54,581 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:25:54,593 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 11:25:54,594 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:25:54,598 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 11:25:54,598 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [508275725] [2019-10-22 11:25:54,599 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:25:54,599 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-10-22 11:25:54,599 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441426311] [2019-10-22 11:25:54,600 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:25:54,600 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:25:54,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:25:54,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:25:54,600 INFO L87 Difference]: Start difference. First operand 242 states and 312 transitions. Second operand 3 states. [2019-10-22 11:25:54,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:25:54,612 INFO L93 Difference]: Finished difference Result 242 states and 312 transitions. [2019-10-22 11:25:54,612 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:25:54,613 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 40 [2019-10-22 11:25:54,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:25:54,613 INFO L225 Difference]: With dead ends: 242 [2019-10-22 11:25:54,613 INFO L226 Difference]: Without dead ends: 120 [2019-10-22 11:25:54,614 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 11:25:54,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2019-10-22 11:25:54,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2019-10-22 11:25:54,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2019-10-22 11:25:54,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 160 transitions. [2019-10-22 11:25:54,624 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 160 transitions. Word has length 40 [2019-10-22 11:25:54,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:25:54,624 INFO L462 AbstractCegarLoop]: Abstraction has 120 states and 160 transitions. [2019-10-22 11:25:54,624 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:25:54,624 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 160 transitions. [2019-10-22 11:25:54,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-10-22 11:25:54,625 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:54,625 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 11:25:54,826 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:25:54,826 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:25:54,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:54,826 INFO L82 PathProgramCache]: Analyzing trace with hash -187398120, now seen corresponding path program 1 times [2019-10-22 11:25:54,827 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:25:54,827 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [2053316078] [2019-10-22 11:25:54,827 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3d043e3f-8ed2-4fb1-939d-9f5eb20c52ab/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 11:25:54,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:54,965 INFO L256 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-22 11:25:54,967 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:25:55,002 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 11:25:55,002 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:25:55,048 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 11:25:55,048 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2053316078] [2019-10-22 11:25:55,049 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1884346795] [2019-10-22 11:25:55,049 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3d043e3f-8ed2-4fb1-939d-9f5eb20c52ab/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 11:25:55,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:55,176 INFO L256 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-22 11:25:55,178 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:25:55,188 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 11:25:55,189 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:25:55,199 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 11:25:55,200 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-22 11:25:55,200 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5] total 9 [2019-10-22 11:25:55,203 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130909220] [2019-10-22 11:25:55,204 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-22 11:25:55,204 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:25:55,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-22 11:25:55,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-10-22 11:25:55,205 INFO L87 Difference]: Start difference. First operand 120 states and 160 transitions. Second operand 10 states. [2019-10-22 11:25:55,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:25:55,907 INFO L93 Difference]: Finished difference Result 727 states and 1006 transitions. [2019-10-22 11:25:55,907 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-10-22 11:25:55,907 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 45 [2019-10-22 11:25:55,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:25:55,909 INFO L225 Difference]: With dead ends: 727 [2019-10-22 11:25:55,910 INFO L226 Difference]: Without dead ends: 636 [2019-10-22 11:25:55,910 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=198, Invalid=558, Unknown=0, NotChecked=0, Total=756 [2019-10-22 11:25:55,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2019-10-22 11:25:55,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 217. [2019-10-22 11:25:55,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2019-10-22 11:25:55,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 296 transitions. [2019-10-22 11:25:55,932 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 296 transitions. Word has length 45 [2019-10-22 11:25:55,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:25:55,933 INFO L462 AbstractCegarLoop]: Abstraction has 217 states and 296 transitions. [2019-10-22 11:25:55,933 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-22 11:25:55,933 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 296 transitions. [2019-10-22 11:25:55,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-10-22 11:25:55,934 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:55,934 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 11:25:56,334 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 11:25:56,335 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:25:56,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:56,335 INFO L82 PathProgramCache]: Analyzing trace with hash 774082429, now seen corresponding path program 2 times [2019-10-22 11:25:56,335 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:25:56,335 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1711175188] [2019-10-22 11:25:56,335 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_3d043e3f-8ed2-4fb1-939d-9f5eb20c52ab/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 11:25:58,036 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-10-22 11:25:58,037 INFO L250 tOrderPrioritization]: Conjunction of SSA is sat [2019-10-22 11:25:59,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 11:26:00,124 INFO L168 tionRefinementEngine]: Strategy WALRUS found a feasible trace [2019-10-22 11:26:00,124 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-22 11:26:00,325 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:26:00,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 11:26:00 BoogieIcfgContainer [2019-10-22 11:26:00,459 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 11:26:00,459 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 11:26:00,459 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 11:26:00,459 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 11:26:00,460 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:25:51" (3/4) ... [2019-10-22 11:26:00,462 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-10-22 11:26:00,598 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_3d043e3f-8ed2-4fb1-939d-9f5eb20c52ab/bin/utaipan/witness.graphml [2019-10-22 11:26:00,598 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 11:26:00,600 INFO L168 Benchmark]: Toolchain (without parser) took 10901.71 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 215.5 MB). Free memory was 952.3 MB in the beginning and 829.3 MB in the end (delta: 123.0 MB). Peak memory consumption was 338.5 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:00,600 INFO L168 Benchmark]: CDTParser took 0.15 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 11:26:00,600 INFO L168 Benchmark]: CACSL2BoogieTranslator took 454.90 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.8 MB). Free memory was 947.0 MB in the beginning and 1.1 GB in the end (delta: -182.0 MB). Peak memory consumption was 24.5 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:00,601 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.81 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: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:00,601 INFO L168 Benchmark]: Boogie Preprocessor took 30.29 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:00,601 INFO L168 Benchmark]: RCFGBuilder took 795.64 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: 50.8 MB). Peak memory consumption was 50.8 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:00,601 INFO L168 Benchmark]: TraceAbstraction took 9425.03 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 68.7 MB). Free memory was 1.1 GB in the beginning and 851.4 MB in the end (delta: 212.1 MB). Peak memory consumption was 280.7 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:00,602 INFO L168 Benchmark]: Witness Printer took 138.86 ms. Allocated memory is still 1.2 GB. Free memory was 851.4 MB in the beginning and 829.3 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:00,603 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 977.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 454.90 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 146.8 MB). Free memory was 947.0 MB in the beginning and 1.1 GB in the end (delta: -182.0 MB). Peak memory consumption was 24.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 52.81 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: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 30.29 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. * RCFGBuilder took 795.64 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: 50.8 MB). Peak memory consumption was 50.8 MB. Max. memory is 11.5 GB. * TraceAbstraction took 9425.03 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 68.7 MB). Free memory was 1.1 GB in the beginning and 851.4 MB in the end (delta: 212.1 MB). Peak memory consumption was 280.7 MB. Max. memory is 11.5 GB. * Witness Printer took 138.86 ms. Allocated memory is still 1.2 GB. Free memory was 851.4 MB in the beginning and 829.3 MB in the end (delta: 22.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 540]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L69] int cleanupTimeShifts = 4; [L282] int pumpRunning = 0; [L283] int systemActive = 1; [L442] int waterLevel = 1; [L443] int methaneLevelCritical = 0; [L714] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L150] int retValue_acc ; [L151] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L199] int retValue_acc ; [L202] retValue_acc = 1 [L203] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L157] tmp = valid_product() [L159] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L210] int splverifierCounter ; [L211] int tmp ; [L212] int tmp___0 ; [L213] int tmp___1 ; [L214] int tmp___2 ; [L217] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L219] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L221] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L227] tmp = __VERIFIER_nondet_int() [L229] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L460] COND TRUE waterLevel < 2 [L461] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L237] tmp___0 = __VERIFIER_nondet_int() [L239] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L247] tmp___2 = __VERIFIER_nondet_int() [L249] COND TRUE \read(tmp___2) [L437] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L289] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L296] COND TRUE \read(systemActive) [L318] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L321] COND TRUE ! pumpRunning [L415] int retValue_acc ; [L416] int tmp ; [L417] int tmp___0 ; [L522] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L525] COND FALSE !(waterLevel < 2) [L529] retValue_acc = 0 [L530] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L421] tmp = isHighWaterSensorDry() [L423] COND FALSE !(\read(tmp)) [L426] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L428] retValue_acc = tmp___0 [L429] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L323] tmp = isHighWaterLevel() [L325] COND TRUE \read(tmp) [L346] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L44] int tmp ; [L45] int tmp___0 ; [L513] int retValue_acc ; [L516] retValue_acc = waterLevel [L517] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L49] tmp = getWaterLevel() [L51] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L219] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L221] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L227] tmp = __VERIFIER_nondet_int() [L229] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L237] tmp___0 = __VERIFIER_nondet_int() [L239] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L247] tmp___2 = __VERIFIER_nondet_int() [L249] COND TRUE \read(tmp___2) [L437] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L289] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L448] COND TRUE waterLevel > 0 [L449] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L296] COND TRUE \read(systemActive) [L318] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L321] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L44] int tmp ; [L45] int tmp___0 ; [L513] int retValue_acc ; [L516] retValue_acc = waterLevel [L517] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L49] tmp = getWaterLevel() [L51] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L219] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L221] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L227] tmp = __VERIFIER_nondet_int() [L229] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L237] tmp___0 = __VERIFIER_nondet_int() [L239] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L247] tmp___2 = __VERIFIER_nondet_int() [L249] COND TRUE \read(tmp___2) [L437] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L289] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L448] COND TRUE waterLevel > 0 [L449] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L296] COND TRUE \read(systemActive) [L318] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L321] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L44] int tmp ; [L45] int tmp___0 ; [L513] int retValue_acc ; [L516] retValue_acc = waterLevel [L517] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L49] tmp = getWaterLevel() [L51] COND TRUE tmp == 0 [L370] int retValue_acc ; [L373] retValue_acc = pumpRunning [L374] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L53] tmp___0 = isPumpRunning() [L55] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L540] __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: 9.3s, OverallIterations: 9, TraceHistogramMax: 3, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 899 SDtfs, 2149 SDslu, 1981 SDs, 0 SdLazy, 431 SolverSat, 157 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 542 GetRequests, 488 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=316occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 991 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 2.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 324 NumberOfCodeBlocks, 324 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 510 ConstructedInterpolants, 0 QuantifiedInterpolants, 45648 SizeOfPredicates, 21 NumberOfNonLiveVariables, 1740 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...