./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product38.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_0ae2a47c-f690-4647-a76b-505044e0a6f9/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_0ae2a47c-f690-4647-a76b-505044e0a6f9/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_0ae2a47c-f690-4647-a76b-505044e0a6f9/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_0ae2a47c-f690-4647-a76b-505044e0a6f9/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product38.cil.c -s /tmp/vcloud-vcloud-master/worker/working_dir_0ae2a47c-f690-4647-a76b-505044e0a6f9/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_0ae2a47c-f690-4647-a76b-505044e0a6f9/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 764a558f84753bff2f3381f04a56ebf221297041 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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_0ae2a47c-f690-4647-a76b-505044e0a6f9/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_0ae2a47c-f690-4647-a76b-505044e0a6f9/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_0ae2a47c-f690-4647-a76b-505044e0a6f9/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_0ae2a47c-f690-4647-a76b-505044e0a6f9/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product38.cil.c -s /tmp/vcloud-vcloud-master/worker/working_dir_0ae2a47c-f690-4647-a76b-505044e0a6f9/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_0ae2a47c-f690-4647-a76b-505044e0a6f9/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 764a558f84753bff2f3381f04a56ebf221297041 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 11:21:50,531 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:21:50,533 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:21:50,543 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:21:50,544 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:21:50,545 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:21:50,546 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:21:50,547 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:21:50,549 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:21:50,550 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:21:50,551 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:21:50,552 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:21:50,552 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:21:50,553 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:21:50,554 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:21:50,555 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:21:50,556 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:21:50,557 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:21:50,558 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:21:50,560 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:21:50,562 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:21:50,563 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:21:50,564 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:21:50,565 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:21:50,567 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:21:50,567 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:21:50,567 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:21:50,568 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:21:50,569 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:21:50,570 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:21:50,570 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:21:50,570 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:21:50,571 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:21:50,572 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:21:50,573 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:21:50,573 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:21:50,574 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:21:50,574 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:21:50,574 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:21:50,575 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:21:50,575 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:21:50,576 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_0ae2a47c-f690-4647-a76b-505044e0a6f9/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-10-22 11:21:50,589 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:21:50,589 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:21:50,590 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:21:50,590 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:21:50,590 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:21:50,590 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:21:50,591 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-10-22 11:21:50,591 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:21:50,591 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:21:50,591 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-10-22 11:21:50,591 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-10-22 11:21:50,592 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:21:50,592 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:21:50,593 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:21:50,593 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 11:21:50,593 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:21:50,593 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:21:50,593 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:21:50,594 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:21:50,594 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:21:50,594 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:21:50,594 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:21:50,594 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:21:50,595 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:21:50,595 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:21:50,595 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:21:50,595 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:21:50,595 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:21:50,596 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:21:50,596 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:21:50,597 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:21:50,597 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-22 11:21:50,597 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 11:21:50,597 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:21:50,597 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:21:50,597 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_0ae2a47c-f690-4647-a76b-505044e0a6f9/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 -> 764a558f84753bff2f3381f04a56ebf221297041 [2019-10-22 11:21:50,625 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:21:50,636 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:21:50,639 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:21:50,640 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:21:50,641 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:21:50,642 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_0ae2a47c-f690-4647-a76b-505044e0a6f9/bin/utaipan/../../sv-benchmarks/c/product-lines/minepump_spec4_product38.cil.c [2019-10-22 11:21:50,693 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_0ae2a47c-f690-4647-a76b-505044e0a6f9/bin/utaipan/data/dee4c54e7/50ca7a6cc53a4a5f9c9119111e6d2201/FLAG92422c696 [2019-10-22 11:21:51,173 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:21:51,174 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_0ae2a47c-f690-4647-a76b-505044e0a6f9/sv-benchmarks/c/product-lines/minepump_spec4_product38.cil.c [2019-10-22 11:21:51,187 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_0ae2a47c-f690-4647-a76b-505044e0a6f9/bin/utaipan/data/dee4c54e7/50ca7a6cc53a4a5f9c9119111e6d2201/FLAG92422c696 [2019-10-22 11:21:51,503 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_0ae2a47c-f690-4647-a76b-505044e0a6f9/bin/utaipan/data/dee4c54e7/50ca7a6cc53a4a5f9c9119111e6d2201 [2019-10-22 11:21:51,506 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:21:51,507 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:21:51,508 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:21:51,508 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:21:51,512 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:21:51,513 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:21:51" (1/1) ... [2019-10-22 11:21:51,516 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3005d2e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:51, skipping insertion in model container [2019-10-22 11:21:51,516 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:21:51" (1/1) ... [2019-10-22 11:21:51,524 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:21:51,577 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:21:51,929 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:21:51,950 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:21:52,043 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:21:52,071 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:21:52,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:52 WrapperNode [2019-10-22 11:21:52,072 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:21:52,073 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:21:52,073 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:21:52,073 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:21:52,082 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:52" (1/1) ... [2019-10-22 11:21:52,113 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:52" (1/1) ... [2019-10-22 11:21:52,169 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:21:52,170 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:21:52,170 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:21:52,170 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:21:52,182 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:52" (1/1) ... [2019-10-22 11:21:52,182 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:52" (1/1) ... [2019-10-22 11:21:52,186 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:52" (1/1) ... [2019-10-22 11:21:52,187 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:52" (1/1) ... [2019-10-22 11:21:52,197 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:52" (1/1) ... [2019-10-22 11:21:52,207 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:52" (1/1) ... [2019-10-22 11:21:52,210 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:52" (1/1) ... [2019-10-22 11:21:52,216 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:21:52,224 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:21:52,224 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:21:52,225 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:21:52,225 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:52" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0ae2a47c-f690-4647-a76b-505044e0a6f9/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:21:52,298 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 11:21:52,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-22 11:21:52,299 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:21:52,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:21:53,159 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:21:53,160 INFO L284 CfgBuilder]: Removed 158 assume(true) statements. [2019-10-22 11:21:53,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:21:53 BoogieIcfgContainer [2019-10-22 11:21:53,161 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:21:53,162 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:21:53,162 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:21:53,166 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:21:53,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:21:51" (1/3) ... [2019-10-22 11:21:53,167 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20224938 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:21:53, skipping insertion in model container [2019-10-22 11:21:53,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:52" (2/3) ... [2019-10-22 11:21:53,172 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20224938 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:21:53, skipping insertion in model container [2019-10-22 11:21:53,172 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:21:53" (3/3) ... [2019-10-22 11:21:53,174 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product38.cil.c [2019-10-22 11:21:53,185 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:21:53,199 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-10-22 11:21:53,211 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-10-22 11:21:53,248 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:21:53,248 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:21:53,248 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:21:53,248 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:21:53,248 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:21:53,249 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:21:53,249 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:21:53,249 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:21:53,269 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states. [2019-10-22 11:21:53,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-22 11:21:53,276 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:21:53,278 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:21:53,279 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:21:53,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:21:53,286 INFO L82 PathProgramCache]: Analyzing trace with hash -1529342393, now seen corresponding path program 1 times [2019-10-22 11:21:53,295 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:21:53,296 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605891228] [2019-10-22 11:21:53,296 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:53,296 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:53,296 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:21:53,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:21:53,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:21:53,498 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605891228] [2019-10-22 11:21:53,499 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:21:53,499 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 11:21:53,499 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209562736] [2019-10-22 11:21:53,503 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-22 11:21:53,505 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:21:53,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-22 11:21:53,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 11:21:53,521 INFO L87 Difference]: Start difference. First operand 111 states. Second operand 2 states. [2019-10-22 11:21:53,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:21:53,554 INFO L93 Difference]: Finished difference Result 216 states and 329 transitions. [2019-10-22 11:21:53,554 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 11:21:53,555 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2019-10-22 11:21:53,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:21:53,570 INFO L225 Difference]: With dead ends: 216 [2019-10-22 11:21:53,570 INFO L226 Difference]: Without dead ends: 107 [2019-10-22 11:21:53,573 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 11:21:53,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2019-10-22 11:21:53,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2019-10-22 11:21:53,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2019-10-22 11:21:53,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 156 transitions. [2019-10-22 11:21:53,621 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 156 transitions. Word has length 16 [2019-10-22 11:21:53,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:21:53,621 INFO L462 AbstractCegarLoop]: Abstraction has 107 states and 156 transitions. [2019-10-22 11:21:53,621 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-22 11:21:53,621 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 156 transitions. [2019-10-22 11:21:53,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-22 11:21:53,622 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:21:53,623 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:21:53,627 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:21:53,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:21:53,627 INFO L82 PathProgramCache]: Analyzing trace with hash 1945506518, now seen corresponding path program 1 times [2019-10-22 11:21:53,627 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:21:53,628 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531453837] [2019-10-22 11:21:53,628 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:53,628 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:53,628 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:21:53,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:21:53,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:21:53,752 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531453837] [2019-10-22 11:21:53,753 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:21:53,753 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 11:21:53,753 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364298498] [2019-10-22 11:21:53,754 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:21:53,755 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:21:53,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:21:53,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:21:53,755 INFO L87 Difference]: Start difference. First operand 107 states and 156 transitions. Second operand 3 states. [2019-10-22 11:21:53,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:21:53,769 INFO L93 Difference]: Finished difference Result 107 states and 156 transitions. [2019-10-22 11:21:53,770 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:21:53,770 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2019-10-22 11:21:53,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:21:53,771 INFO L225 Difference]: With dead ends: 107 [2019-10-22 11:21:53,771 INFO L226 Difference]: Without dead ends: 45 [2019-10-22 11:21:53,772 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 11:21:53,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2019-10-22 11:21:53,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2019-10-22 11:21:53,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2019-10-22 11:21:53,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 65 transitions. [2019-10-22 11:21:53,778 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 65 transitions. Word has length 17 [2019-10-22 11:21:53,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:21:53,778 INFO L462 AbstractCegarLoop]: Abstraction has 45 states and 65 transitions. [2019-10-22 11:21:53,778 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:21:53,778 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 65 transitions. [2019-10-22 11:21:53,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-10-22 11:21:53,779 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:21:53,779 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 11:21:53,779 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:21:53,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:21:53,780 INFO L82 PathProgramCache]: Analyzing trace with hash 1939738244, now seen corresponding path program 1 times [2019-10-22 11:21:53,780 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:21:53,780 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624296078] [2019-10-22 11:21:53,780 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:53,781 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:53,781 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:21:53,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:21:53,869 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:21:53,870 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624296078] [2019-10-22 11:21:53,870 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:21:53,870 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 11:21:53,870 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861659082] [2019-10-22 11:21:53,871 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:21:53,871 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:21:53,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:21:53,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:21:53,871 INFO L87 Difference]: Start difference. First operand 45 states and 65 transitions. Second operand 5 states. [2019-10-22 11:21:53,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:21:53,957 INFO L93 Difference]: Finished difference Result 84 states and 124 transitions. [2019-10-22 11:21:53,958 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 11:21:53,958 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2019-10-22 11:21:53,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:21:53,959 INFO L225 Difference]: With dead ends: 84 [2019-10-22 11:21:53,959 INFO L226 Difference]: Without dead ends: 45 [2019-10-22 11:21:53,960 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 11:21:53,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2019-10-22 11:21:53,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2019-10-22 11:21:53,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2019-10-22 11:21:53,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 64 transitions. [2019-10-22 11:21:53,971 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 64 transitions. Word has length 22 [2019-10-22 11:21:53,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:21:53,972 INFO L462 AbstractCegarLoop]: Abstraction has 45 states and 64 transitions. [2019-10-22 11:21:53,972 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:21:53,972 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 64 transitions. [2019-10-22 11:21:53,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-10-22 11:21:53,973 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:21:53,973 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:21:53,973 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:21:53,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:21:53,974 INFO L82 PathProgramCache]: Analyzing trace with hash -1547834963, now seen corresponding path program 1 times [2019-10-22 11:21:53,974 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:21:53,974 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026056780] [2019-10-22 11:21:53,974 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:53,975 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:53,976 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:21:54,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:21:54,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:21:54,093 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026056780] [2019-10-22 11:21:54,093 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:21:54,093 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 11:21:54,094 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345716398] [2019-10-22 11:21:54,094 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:21:54,094 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:21:54,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:21:54,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:21:54,095 INFO L87 Difference]: Start difference. First operand 45 states and 64 transitions. Second operand 3 states. [2019-10-22 11:21:54,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:21:54,158 INFO L93 Difference]: Finished difference Result 105 states and 152 transitions. [2019-10-22 11:21:54,158 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:21:54,158 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2019-10-22 11:21:54,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:21:54,159 INFO L225 Difference]: With dead ends: 105 [2019-10-22 11:21:54,159 INFO L226 Difference]: Without dead ends: 66 [2019-10-22 11:21:54,160 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 11:21:54,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2019-10-22 11:21:54,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 64. [2019-10-22 11:21:54,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2019-10-22 11:21:54,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 90 transitions. [2019-10-22 11:21:54,169 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 90 transitions. Word has length 24 [2019-10-22 11:21:54,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:21:54,169 INFO L462 AbstractCegarLoop]: Abstraction has 64 states and 90 transitions. [2019-10-22 11:21:54,169 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:21:54,169 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 90 transitions. [2019-10-22 11:21:54,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-10-22 11:21:54,170 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:21:54,170 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:21:54,170 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:21:54,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:21:54,171 INFO L82 PathProgramCache]: Analyzing trace with hash -1827782978, now seen corresponding path program 1 times [2019-10-22 11:21:54,171 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:21:54,171 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763915795] [2019-10-22 11:21:54,171 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:54,171 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:54,171 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:21:54,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:21:54,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:21:54,262 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763915795] [2019-10-22 11:21:54,263 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:21:54,263 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 11:21:54,263 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313668749] [2019-10-22 11:21:54,263 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:21:54,263 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:21:54,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:21:54,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:21:54,264 INFO L87 Difference]: Start difference. First operand 64 states and 90 transitions. Second operand 5 states. [2019-10-22 11:21:54,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:21:54,369 INFO L93 Difference]: Finished difference Result 171 states and 239 transitions. [2019-10-22 11:21:54,369 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 11:21:54,369 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2019-10-22 11:21:54,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:21:54,370 INFO L225 Difference]: With dead ends: 171 [2019-10-22 11:21:54,371 INFO L226 Difference]: Without dead ends: 113 [2019-10-22 11:21:54,371 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 11:21:54,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2019-10-22 11:21:54,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 70. [2019-10-22 11:21:54,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2019-10-22 11:21:54,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 96 transitions. [2019-10-22 11:21:54,381 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 96 transitions. Word has length 30 [2019-10-22 11:21:54,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:21:54,382 INFO L462 AbstractCegarLoop]: Abstraction has 70 states and 96 transitions. [2019-10-22 11:21:54,382 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:21:54,382 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 96 transitions. [2019-10-22 11:21:54,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-10-22 11:21:54,383 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:21:54,383 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:21:54,383 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:21:54,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:21:54,384 INFO L82 PathProgramCache]: Analyzing trace with hash 834728065, now seen corresponding path program 1 times [2019-10-22 11:21:54,384 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:21:54,384 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136501157] [2019-10-22 11:21:54,384 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:54,385 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:54,385 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:21:54,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:21:54,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:21:54,507 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136501157] [2019-10-22 11:21:54,507 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:21:54,507 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 11:21:54,508 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600824348] [2019-10-22 11:21:54,508 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:21:54,508 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:21:54,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:21:54,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:21:54,509 INFO L87 Difference]: Start difference. First operand 70 states and 96 transitions. Second operand 5 states. [2019-10-22 11:21:54,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:21:54,629 INFO L93 Difference]: Finished difference Result 247 states and 346 transitions. [2019-10-22 11:21:54,633 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 11:21:54,633 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2019-10-22 11:21:54,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:21:54,635 INFO L225 Difference]: With dead ends: 247 [2019-10-22 11:21:54,635 INFO L226 Difference]: Without dead ends: 183 [2019-10-22 11:21:54,635 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-10-22 11:21:54,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2019-10-22 11:21:54,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 113. [2019-10-22 11:21:54,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2019-10-22 11:21:54,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 152 transitions. [2019-10-22 11:21:54,669 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 152 transitions. Word has length 30 [2019-10-22 11:21:54,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:21:54,669 INFO L462 AbstractCegarLoop]: Abstraction has 113 states and 152 transitions. [2019-10-22 11:21:54,669 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:21:54,669 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 152 transitions. [2019-10-22 11:21:54,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-10-22 11:21:54,670 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:21:54,670 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:21:54,671 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:21:54,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:21:54,671 INFO L82 PathProgramCache]: Analyzing trace with hash -1173088129, now seen corresponding path program 1 times [2019-10-22 11:21:54,671 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:21:54,671 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230045213] [2019-10-22 11:21:54,678 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:54,678 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:54,678 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:21:54,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:21:54,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:21:54,777 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230045213] [2019-10-22 11:21:54,778 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:21:54,778 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 11:21:54,778 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269558779] [2019-10-22 11:21:54,779 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:21:54,779 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:21:54,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:21:54,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:21:54,779 INFO L87 Difference]: Start difference. First operand 113 states and 152 transitions. Second operand 5 states. [2019-10-22 11:21:54,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:21:54,926 INFO L93 Difference]: Finished difference Result 241 states and 330 transitions. [2019-10-22 11:21:54,926 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-22 11:21:54,926 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2019-10-22 11:21:54,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:21:54,928 INFO L225 Difference]: With dead ends: 241 [2019-10-22 11:21:54,928 INFO L226 Difference]: Without dead ends: 239 [2019-10-22 11:21:54,928 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-10-22 11:21:54,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2019-10-22 11:21:54,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 113. [2019-10-22 11:21:54,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2019-10-22 11:21:54,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 151 transitions. [2019-10-22 11:21:54,954 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 151 transitions. Word has length 31 [2019-10-22 11:21:54,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:21:54,955 INFO L462 AbstractCegarLoop]: Abstraction has 113 states and 151 transitions. [2019-10-22 11:21:54,955 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:21:54,955 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 151 transitions. [2019-10-22 11:21:54,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-10-22 11:21:54,961 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:21:54,962 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:21:54,962 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:21:54,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:21:54,962 INFO L82 PathProgramCache]: Analyzing trace with hash 66341114, now seen corresponding path program 1 times [2019-10-22 11:21:54,962 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:21:54,963 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333593216] [2019-10-22 11:21:54,963 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:54,963 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:54,963 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:21:54,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:21:55,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:21:55,027 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333593216] [2019-10-22 11:21:55,027 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:21:55,027 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 11:21:55,027 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502914113] [2019-10-22 11:21:55,028 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 11:21:55,028 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:21:55,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 11:21:55,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 11:21:55,029 INFO L87 Difference]: Start difference. First operand 113 states and 151 transitions. Second operand 4 states. [2019-10-22 11:21:55,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:21:55,083 INFO L93 Difference]: Finished difference Result 246 states and 329 transitions. [2019-10-22 11:21:55,084 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 11:21:55,084 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2019-10-22 11:21:55,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:21:55,085 INFO L225 Difference]: With dead ends: 246 [2019-10-22 11:21:55,085 INFO L226 Difference]: Without dead ends: 139 [2019-10-22 11:21:55,086 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:21:55,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2019-10-22 11:21:55,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 98. [2019-10-22 11:21:55,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2019-10-22 11:21:55,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 128 transitions. [2019-10-22 11:21:55,111 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 128 transitions. Word has length 31 [2019-10-22 11:21:55,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:21:55,112 INFO L462 AbstractCegarLoop]: Abstraction has 98 states and 128 transitions. [2019-10-22 11:21:55,112 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 11:21:55,112 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 128 transitions. [2019-10-22 11:21:55,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-10-22 11:21:55,113 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:21:55,113 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:21:55,113 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:21:55,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:21:55,114 INFO L82 PathProgramCache]: Analyzing trace with hash 324506552, now seen corresponding path program 1 times [2019-10-22 11:21:55,114 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:21:55,114 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105465961] [2019-10-22 11:21:55,115 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:55,115 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:55,115 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:21:55,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:21:55,207 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:21:55,207 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105465961] [2019-10-22 11:21:55,207 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:21:55,208 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 11:21:55,208 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874152899] [2019-10-22 11:21:55,208 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:21:55,208 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:21:55,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:21:55,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:21:55,209 INFO L87 Difference]: Start difference. First operand 98 states and 128 transitions. Second operand 5 states. [2019-10-22 11:21:55,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:21:55,350 INFO L93 Difference]: Finished difference Result 265 states and 357 transitions. [2019-10-22 11:21:55,351 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 11:21:55,351 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2019-10-22 11:21:55,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:21:55,352 INFO L225 Difference]: With dead ends: 265 [2019-10-22 11:21:55,352 INFO L226 Difference]: Without dead ends: 197 [2019-10-22 11:21:55,353 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2019-10-22 11:21:55,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2019-10-22 11:21:55,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 139. [2019-10-22 11:21:55,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2019-10-22 11:21:55,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 180 transitions. [2019-10-22 11:21:55,374 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 180 transitions. Word has length 31 [2019-10-22 11:21:55,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:21:55,374 INFO L462 AbstractCegarLoop]: Abstraction has 139 states and 180 transitions. [2019-10-22 11:21:55,374 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:21:55,374 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 180 transitions. [2019-10-22 11:21:55,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2019-10-22 11:21:55,375 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:21:55,375 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:21:55,376 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:21:55,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:21:55,380 INFO L82 PathProgramCache]: Analyzing trace with hash -337830252, now seen corresponding path program 1 times [2019-10-22 11:21:55,380 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:21:55,380 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319561261] [2019-10-22 11:21:55,380 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:55,380 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:55,380 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:21:55,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:21:55,464 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:21:55,464 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319561261] [2019-10-22 11:21:55,464 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1576951309] [2019-10-22 11:21:55,464 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0ae2a47c-f690-4647-a76b-505044e0a6f9/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:21:55,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:21:55,599 INFO L256 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-22 11:21:55,606 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:21:55,635 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:21:55,636 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:21:55,665 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 11 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:21:55,667 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [1593702920] [2019-10-22 11:21:55,674 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 51 [2019-10-22 11:21:55,722 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2019-10-22 11:21:55,723 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-22 11:21:56,164 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:21:56,164 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: inappropriate decl info IMPLEMENTATION at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Boogie2SmtSymbolTable.getBoogieVar(Boogie2SmtSymbolTable.java:222) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.getBoogieVar(NonrelationalStatementProcessor.java:348) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.handleHavocStatement(NonrelationalStatementProcessor.java:325) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.processStatement(NonrelationalStatementProcessor.java:159) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.process(NonrelationalStatementProcessor.java:138) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.process(NonrelationalStatementProcessor.java:107) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.handleInternalTransition(NonrelationalPostOperator.java:422) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.handleInternalTransition(NonrelationalPostOperator.java:413) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.apply(NonrelationalPostOperator.java:140) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.apply(NonrelationalPostOperator.java:1) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.compound.CompoundDomainPostOperator.applyInternally(CompoundDomainPostOperator.java:306) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.compound.CompoundDomainPostOperator.apply(CompoundDomainPostOperator.java:131) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.compound.CompoundDomainPostOperator.apply(CompoundDomainPostOperator.java:1) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormanCachedPostOperation.restoreOriginalStateVariables(PoormanCachedPostOperation.java:322) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormansAbstractPostOperator.applyPost(PoormansAbstractPostOperator.java:217) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormansAbstractPostOperator.apply(PoormansAbstractPostOperator.java:120) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormansAbstractPostOperator.apply(PoormansAbstractPostOperator.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.absint.DisjunctiveAbstractState.lambda$17(DisjunctiveAbstractState.java:323) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.absint.DisjunctiveAbstractState.mapCollection(DisjunctiveAbstractState.java:519) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.absint.DisjunctiveAbstractState.apply(DisjunctiveAbstractState.java:323) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.algorithm.FixpointEngine.calculateAbstractPost(FixpointEngine.java:249) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.algorithm.FixpointEngine.calculateFixpoint(FixpointEngine.java:134) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.algorithm.FixpointEngine.run(FixpointEngine.java:105) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.tool.AbstractInterpreter.runWithoutTimeoutAndResults(AbstractInterpreter.java:149) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarAbsIntRunner.generateFixpoints(CegarAbsIntRunner.java:227) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarAbsIntRunner.(CegarAbsIntRunner.java:158) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleAbstractInterpretation.getOrConstructRunner(IpTcStrategyModuleAbstractInterpretation.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleAbstractInterpretation.construct(IpTcStrategyModuleAbstractInterpretation.java:81) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:299) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.generateProof(TraceAbstractionRefinementEngine.java:184) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-10-22 11:21:56,170 INFO L168 Benchmark]: Toolchain (without parser) took 4662.41 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 941.7 MB in the beginning and 1.0 GB in the end (delta: -78.8 MB). Peak memory consumption was 64.3 MB. Max. memory is 11.5 GB. [2019-10-22 11:21:56,170 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 966.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:21:56,171 INFO L168 Benchmark]: CACSL2BoogieTranslator took 564.36 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 940.4 MB in the beginning and 1.1 GB in the end (delta: -189.3 MB). Peak memory consumption was 21.8 MB. Max. memory is 11.5 GB. [2019-10-22 11:21:56,171 INFO L168 Benchmark]: Boogie Procedure Inliner took 96.68 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-10-22 11:21:56,175 INFO L168 Benchmark]: Boogie Preprocessor took 54.24 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2019-10-22 11:21:56,176 INFO L168 Benchmark]: RCFGBuilder took 937.39 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: 66.7 MB). Peak memory consumption was 66.7 MB. Max. memory is 11.5 GB. [2019-10-22 11:21:56,176 INFO L168 Benchmark]: TraceAbstraction took 3005.55 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 33.0 MB). Peak memory consumption was 33.0 MB. Max. memory is 11.5 GB. [2019-10-22 11:21:56,179 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 966.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 564.36 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 143.1 MB). Free memory was 940.4 MB in the beginning and 1.1 GB in the end (delta: -189.3 MB). Peak memory consumption was 21.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 96.68 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 54.24 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 937.39 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: 66.7 MB). Peak memory consumption was 66.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3005.55 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 33.0 MB). Peak memory consumption was 33.0 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: inappropriate decl info IMPLEMENTATION de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: inappropriate decl info IMPLEMENTATION: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Boogie2SmtSymbolTable.getBoogieVar(Boogie2SmtSymbolTable.java:222) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-cad4683 [2019-10-22 11:21:58,465 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:21:58,466 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:21:58,477 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:21:58,477 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:21:58,478 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:21:58,479 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:21:58,481 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:21:58,482 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:21:58,483 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:21:58,484 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:21:58,485 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:21:58,485 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:21:58,486 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:21:58,487 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:21:58,488 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:21:58,488 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:21:58,489 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:21:58,491 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:21:58,493 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:21:58,494 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:21:58,495 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:21:58,496 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:21:58,497 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:21:58,499 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:21:58,499 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:21:58,499 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:21:58,500 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:21:58,501 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:21:58,502 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:21:58,502 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:21:58,502 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:21:58,503 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:21:58,504 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:21:58,505 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:21:58,505 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:21:58,506 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:21:58,506 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:21:58,506 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:21:58,507 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:21:58,508 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:21:58,509 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_0ae2a47c-f690-4647-a76b-505044e0a6f9/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2019-10-22 11:21:58,521 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:21:58,522 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:21:58,522 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:21:58,522 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:21:58,523 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:21:58,523 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:21:58,523 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:21:58,523 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:21:58,523 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:21:58,524 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:21:58,524 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:21:58,525 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:21:58,525 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:21:58,525 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:21:58,525 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:21:58,525 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:21:58,526 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-10-22 11:21:58,526 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-10-22 11:21:58,526 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:21:58,526 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:21:58,526 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 11:21:58,526 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:21:58,527 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:21:58,527 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:21:58,527 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:21:58,527 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:21:58,527 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:21:58,528 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:21:58,528 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:21:58,528 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:21:58,529 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-10-22 11:21:58,529 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-10-22 11:21:58,529 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:21:58,529 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:21:58,529 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_0ae2a47c-f690-4647-a76b-505044e0a6f9/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 -> 764a558f84753bff2f3381f04a56ebf221297041 [2019-10-22 11:21:58,559 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:21:58,570 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:21:58,574 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:21:58,575 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:21:58,575 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:21:58,576 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_0ae2a47c-f690-4647-a76b-505044e0a6f9/bin/utaipan/../../sv-benchmarks/c/product-lines/minepump_spec4_product38.cil.c [2019-10-22 11:21:58,626 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_0ae2a47c-f690-4647-a76b-505044e0a6f9/bin/utaipan/data/aff6ba6bd/2b1b8201ef8846b6836aa921d93272f5/FLAGe645c4894 [2019-10-22 11:21:59,117 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:21:59,121 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_0ae2a47c-f690-4647-a76b-505044e0a6f9/sv-benchmarks/c/product-lines/minepump_spec4_product38.cil.c [2019-10-22 11:21:59,136 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_0ae2a47c-f690-4647-a76b-505044e0a6f9/bin/utaipan/data/aff6ba6bd/2b1b8201ef8846b6836aa921d93272f5/FLAGe645c4894 [2019-10-22 11:21:59,598 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_0ae2a47c-f690-4647-a76b-505044e0a6f9/bin/utaipan/data/aff6ba6bd/2b1b8201ef8846b6836aa921d93272f5 [2019-10-22 11:21:59,601 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:21:59,602 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:21:59,604 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:21:59,604 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:21:59,607 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:21:59,608 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:21:59" (1/1) ... [2019-10-22 11:21:59,611 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 11:21:59, skipping insertion in model container [2019-10-22 11:21:59,612 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:21:59" (1/1) ... [2019-10-22 11:21:59,619 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:21:59,664 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:22:00,020 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:22:00,110 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:22:00,211 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:22:00,254 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:22:00,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:00 WrapperNode [2019-10-22 11:22:00,254 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:22:00,255 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:22:00,255 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:22:00,255 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:22:00,264 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:00" (1/1) ... [2019-10-22 11:22:00,289 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:00" (1/1) ... [2019-10-22 11:22:00,329 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:22:00,329 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:22:00,330 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:22:00,330 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:22:00,339 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:00" (1/1) ... [2019-10-22 11:22:00,339 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:00" (1/1) ... [2019-10-22 11:22:00,354 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:00" (1/1) ... [2019-10-22 11:22:00,355 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:00" (1/1) ... [2019-10-22 11:22:00,371 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:00" (1/1) ... [2019-10-22 11:22:00,385 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:00" (1/1) ... [2019-10-22 11:22:00,396 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:00" (1/1) ... [2019-10-22 11:22:00,406 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:22:00,406 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:22:00,406 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:22:00,406 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:22:00,407 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:00" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0ae2a47c-f690-4647-a76b-505044e0a6f9/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:22:00,462 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 11:22:00,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2019-10-22 11:22:00,462 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:22:00,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:22:01,398 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:22:01,398 INFO L284 CfgBuilder]: Removed 158 assume(true) statements. [2019-10-22 11:22:01,400 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:22:01 BoogieIcfgContainer [2019-10-22 11:22:01,400 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:22:01,401 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:22:01,401 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:22:01,404 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:22:01,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:21:59" (1/3) ... [2019-10-22 11:22:01,405 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79fecb66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:22:01, skipping insertion in model container [2019-10-22 11:22:01,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:00" (2/3) ... [2019-10-22 11:22:01,406 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79fecb66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:22:01, skipping insertion in model container [2019-10-22 11:22:01,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:22:01" (3/3) ... [2019-10-22 11:22:01,408 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product38.cil.c [2019-10-22 11:22:01,419 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:22:01,426 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-10-22 11:22:01,434 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-10-22 11:22:01,457 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:22:01,457 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:22:01,457 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:22:01,457 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:22:01,459 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:22:01,459 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:22:01,459 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:22:01,459 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:22:01,471 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states. [2019-10-22 11:22:01,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-22 11:22:01,478 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:22:01,479 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:22:01,480 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:22:01,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:22:01,486 INFO L82 PathProgramCache]: Analyzing trace with hash -1529342393, now seen corresponding path program 1 times [2019-10-22 11:22:01,497 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:22:01,497 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1600352987] [2019-10-22 11:22:01,497 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0ae2a47c-f690-4647-a76b-505044e0a6f9/bin/utaipan/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:22:01,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:22:01,684 INFO L256 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 1 conjunts are in the unsatisfiable core [2019-10-22 11:22:01,690 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:22:01,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:22:01,705 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:22:01,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:22:01,711 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1600352987] [2019-10-22 11:22:01,712 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:22:01,712 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-10-22 11:22:01,713 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127028015] [2019-10-22 11:22:01,717 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-22 11:22:01,718 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:22:01,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-22 11:22:01,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 11:22:01,735 INFO L87 Difference]: Start difference. First operand 111 states. Second operand 2 states. [2019-10-22 11:22:01,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:22:01,767 INFO L93 Difference]: Finished difference Result 216 states and 329 transitions. [2019-10-22 11:22:01,767 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 11:22:01,768 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2019-10-22 11:22:01,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:22:01,780 INFO L225 Difference]: With dead ends: 216 [2019-10-22 11:22:01,781 INFO L226 Difference]: Without dead ends: 107 [2019-10-22 11:22:01,784 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 11:22:01,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2019-10-22 11:22:01,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2019-10-22 11:22:01,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2019-10-22 11:22:01,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 156 transitions. [2019-10-22 11:22:01,835 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 156 transitions. Word has length 16 [2019-10-22 11:22:01,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:22:01,836 INFO L462 AbstractCegarLoop]: Abstraction has 107 states and 156 transitions. [2019-10-22 11:22:01,836 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-22 11:22:01,836 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 156 transitions. [2019-10-22 11:22:01,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-22 11:22:01,837 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:22:01,837 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:22:02,038 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:22:02,039 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:22:02,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:22:02,039 INFO L82 PathProgramCache]: Analyzing trace with hash 1945506518, now seen corresponding path program 1 times [2019-10-22 11:22:02,040 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:22:02,040 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1231032189] [2019-10-22 11:22:02,040 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0ae2a47c-f690-4647-a76b-505044e0a6f9/bin/utaipan/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:22:02,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:22:02,229 INFO L256 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 11:22:02,231 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:22:02,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:22:02,260 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:22:02,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:22:02,269 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1231032189] [2019-10-22 11:22:02,270 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:22:02,270 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2019-10-22 11:22:02,270 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007326184] [2019-10-22 11:22:02,272 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 11:22:02,272 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:22:02,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 11:22:02,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-22 11:22:02,273 INFO L87 Difference]: Start difference. First operand 107 states and 156 transitions. Second operand 4 states. [2019-10-22 11:22:02,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:22:02,309 INFO L93 Difference]: Finished difference Result 208 states and 306 transitions. [2019-10-22 11:22:02,310 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:22:02,310 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2019-10-22 11:22:02,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:22:02,312 INFO L225 Difference]: With dead ends: 208 [2019-10-22 11:22:02,312 INFO L226 Difference]: Without dead ends: 107 [2019-10-22 11:22:02,313 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-22 11:22:02,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2019-10-22 11:22:02,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2019-10-22 11:22:02,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2019-10-22 11:22:02,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 153 transitions. [2019-10-22 11:22:02,326 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 153 transitions. Word has length 17 [2019-10-22 11:22:02,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:22:02,327 INFO L462 AbstractCegarLoop]: Abstraction has 107 states and 153 transitions. [2019-10-22 11:22:02,327 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 11:22:02,327 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 153 transitions. [2019-10-22 11:22:02,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-10-22 11:22:02,328 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:22:02,328 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:22:02,529 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:22:02,529 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:22:02,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:22:02,530 INFO L82 PathProgramCache]: Analyzing trace with hash -299486849, now seen corresponding path program 1 times [2019-10-22 11:22:02,531 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:22:02,531 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1055811157] [2019-10-22 11:22:02,531 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0ae2a47c-f690-4647-a76b-505044e0a6f9/bin/utaipan/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:22:02,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:22:02,829 INFO L256 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 11:22:02,830 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:22:02,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:22:02,838 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:22:02,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:22:02,844 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1055811157] [2019-10-22 11:22:02,844 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:22:02,844 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-10-22 11:22:02,845 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292402086] [2019-10-22 11:22:02,845 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:22:02,845 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:22:02,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:22:02,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:22:02,846 INFO L87 Difference]: Start difference. First operand 107 states and 153 transitions. Second operand 3 states. [2019-10-22 11:22:03,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:22:03,059 INFO L93 Difference]: Finished difference Result 255 states and 363 transitions. [2019-10-22 11:22:03,060 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:22:03,060 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2019-10-22 11:22:03,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:22:03,061 INFO L225 Difference]: With dead ends: 255 [2019-10-22 11:22:03,061 INFO L226 Difference]: Without dead ends: 154 [2019-10-22 11:22:03,062 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:22:03,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2019-10-22 11:22:03,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 148. [2019-10-22 11:22:03,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2019-10-22 11:22:03,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 204 transitions. [2019-10-22 11:22:03,094 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 204 transitions. Word has length 19 [2019-10-22 11:22:03,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:22:03,094 INFO L462 AbstractCegarLoop]: Abstraction has 148 states and 204 transitions. [2019-10-22 11:22:03,095 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:22:03,095 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 204 transitions. [2019-10-22 11:22:03,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-10-22 11:22:03,096 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:22:03,096 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:22:03,298 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:22:03,298 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:22:03,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:22:03,299 INFO L82 PathProgramCache]: Analyzing trace with hash -1871310576, now seen corresponding path program 1 times [2019-10-22 11:22:03,299 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:22:03,299 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [2045667049] [2019-10-22 11:22:03,300 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0ae2a47c-f690-4647-a76b-505044e0a6f9/bin/utaipan/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:22:03,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:22:03,467 INFO L256 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-22 11:22:03,469 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:22:03,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:22:03,494 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:22:03,502 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:22:03,503 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2045667049] [2019-10-22 11:22:03,503 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:22:03,503 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-10-22 11:22:03,503 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707145362] [2019-10-22 11:22:03,504 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:22:03,504 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:22:03,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:22:03,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:22:03,505 INFO L87 Difference]: Start difference. First operand 148 states and 204 transitions. Second operand 5 states. [2019-10-22 11:22:03,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:22:03,694 INFO L93 Difference]: Finished difference Result 405 states and 543 transitions. [2019-10-22 11:22:03,694 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 11:22:03,694 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2019-10-22 11:22:03,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:22:03,696 INFO L225 Difference]: With dead ends: 405 [2019-10-22 11:22:03,696 INFO L226 Difference]: Without dead ends: 263 [2019-10-22 11:22:03,697 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-22 11:22:03,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2019-10-22 11:22:03,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 166. [2019-10-22 11:22:03,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2019-10-22 11:22:03,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 222 transitions. [2019-10-22 11:22:03,719 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 222 transitions. Word has length 25 [2019-10-22 11:22:03,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:22:03,719 INFO L462 AbstractCegarLoop]: Abstraction has 166 states and 222 transitions. [2019-10-22 11:22:03,720 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:22:03,720 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 222 transitions. [2019-10-22 11:22:03,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-10-22 11:22:03,721 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:22:03,721 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:22:03,922 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:22:03,922 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:22:03,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:22:03,923 INFO L82 PathProgramCache]: Analyzing trace with hash 791200467, now seen corresponding path program 1 times [2019-10-22 11:22:03,923 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:22:03,923 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [261464873] [2019-10-22 11:22:03,924 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0ae2a47c-f690-4647-a76b-505044e0a6f9/bin/utaipan/cvc4 Starting monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:22:04,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:22:04,081 INFO L256 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-22 11:22:04,082 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:22:04,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:22:04,115 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:22:04,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:22:04,147 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [261464873] [2019-10-22 11:22:04,147 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:22:04,147 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2019-10-22 11:22:04,148 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120183993] [2019-10-22 11:22:04,152 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-22 11:22:04,152 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:22:04,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 11:22:04,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-10-22 11:22:04,152 INFO L87 Difference]: Start difference. First operand 166 states and 222 transitions. Second operand 8 states. [2019-10-22 11:22:04,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:22:04,801 INFO L93 Difference]: Finished difference Result 1156 states and 1561 transitions. [2019-10-22 11:22:04,802 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-22 11:22:04,802 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2019-10-22 11:22:04,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:22:04,806 INFO L225 Difference]: With dead ends: 1156 [2019-10-22 11:22:04,807 INFO L226 Difference]: Without dead ends: 996 [2019-10-22 11:22:04,808 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2019-10-22 11:22:04,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 996 states. [2019-10-22 11:22:04,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 996 to 403. [2019-10-22 11:22:04,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 403 states. [2019-10-22 11:22:04,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 525 transitions. [2019-10-22 11:22:04,875 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 525 transitions. Word has length 25 [2019-10-22 11:22:04,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:22:04,875 INFO L462 AbstractCegarLoop]: Abstraction has 403 states and 525 transitions. [2019-10-22 11:22:04,875 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-22 11:22:04,875 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 525 transitions. [2019-10-22 11:22:04,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-10-22 11:22:04,879 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:22:04,879 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:22:05,079 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:22:05,080 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:22:05,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:22:05,080 INFO L82 PathProgramCache]: Analyzing trace with hash -20764021, now seen corresponding path program 1 times [2019-10-22 11:22:05,080 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:22:05,081 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1717815326] [2019-10-22 11:22:05,081 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0ae2a47c-f690-4647-a76b-505044e0a6f9/bin/utaipan/cvc4 Starting monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:22:05,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:22:05,238 INFO L256 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-22 11:22:05,240 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:22:05,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:22:05,255 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:22:05,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:22:05,282 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1717815326] [2019-10-22 11:22:05,282 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:22:05,282 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-10-22 11:22:05,282 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139526434] [2019-10-22 11:22:05,283 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 11:22:05,283 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:22:05,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 11:22:05,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-22 11:22:05,284 INFO L87 Difference]: Start difference. First operand 403 states and 525 transitions. Second operand 6 states. [2019-10-22 11:22:05,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:22:05,465 INFO L93 Difference]: Finished difference Result 926 states and 1191 transitions. [2019-10-22 11:22:05,466 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 11:22:05,466 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 39 [2019-10-22 11:22:05,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:22:05,468 INFO L225 Difference]: With dead ends: 926 [2019-10-22 11:22:05,468 INFO L226 Difference]: Without dead ends: 492 [2019-10-22 11:22:05,469 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-22 11:22:05,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2019-10-22 11:22:05,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 324. [2019-10-22 11:22:05,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 324 states. [2019-10-22 11:22:05,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 418 transitions. [2019-10-22 11:22:05,505 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 418 transitions. Word has length 39 [2019-10-22 11:22:05,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:22:05,506 INFO L462 AbstractCegarLoop]: Abstraction has 324 states and 418 transitions. [2019-10-22 11:22:05,506 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 11:22:05,506 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 418 transitions. [2019-10-22 11:22:05,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2019-10-22 11:22:05,510 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:22:05,511 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:22:05,711 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:22:05,712 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:22:05,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:22:05,713 INFO L82 PathProgramCache]: Analyzing trace with hash 2136733096, now seen corresponding path program 1 times [2019-10-22 11:22:05,713 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:22:05,713 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [176489662] [2019-10-22 11:22:05,713 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0ae2a47c-f690-4647-a76b-505044e0a6f9/bin/utaipan/cvc4 Starting monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:22:05,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:22:05,857 INFO L256 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 11:22:05,858 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:22:05,869 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:22:05,869 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:22:05,874 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:22:05,874 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [176489662] [2019-10-22 11:22:05,874 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:22:05,875 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-10-22 11:22:05,875 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785435401] [2019-10-22 11:22:05,875 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:22:05,875 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:22:05,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:22:05,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:22:05,878 INFO L87 Difference]: Start difference. First operand 324 states and 418 transitions. Second operand 3 states. [2019-10-22 11:22:05,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:22:05,899 INFO L93 Difference]: Finished difference Result 324 states and 418 transitions. [2019-10-22 11:22:05,899 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:22:05,899 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 44 [2019-10-22 11:22:05,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:22:05,902 INFO L225 Difference]: With dead ends: 324 [2019-10-22 11:22:05,902 INFO L226 Difference]: Without dead ends: 148 [2019-10-22 11:22:05,902 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:22:05,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2019-10-22 11:22:05,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2019-10-22 11:22:05,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2019-10-22 11:22:05,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 196 transitions. [2019-10-22 11:22:05,918 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 196 transitions. Word has length 44 [2019-10-22 11:22:05,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:22:05,919 INFO L462 AbstractCegarLoop]: Abstraction has 148 states and 196 transitions. [2019-10-22 11:22:05,919 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:22:05,919 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 196 transitions. [2019-10-22 11:22:05,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2019-10-22 11:22:05,922 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:22:05,923 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:22:06,123 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:22:06,124 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:22:06,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:22:06,124 INFO L82 PathProgramCache]: Analyzing trace with hash 1774800916, now seen corresponding path program 1 times [2019-10-22 11:22:06,124 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:22:06,124 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [904568494] [2019-10-22 11:22:06,125 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0ae2a47c-f690-4647-a76b-505044e0a6f9/bin/utaipan/cvc4 Starting monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:22:06,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:22:06,283 INFO L256 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-22 11:22:06,285 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:22:06,318 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-10-22 11:22:06,318 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:22:06,327 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2019-10-22 11:22:06,328 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [904568494] [2019-10-22 11:22:06,328 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:22:06,328 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-10-22 11:22:06,328 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994596898] [2019-10-22 11:22:06,329 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 11:22:06,329 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:22:06,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 11:22:06,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-22 11:22:06,329 INFO L87 Difference]: Start difference. First operand 148 states and 196 transitions. Second operand 6 states. [2019-10-22 11:22:06,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:22:06,502 INFO L93 Difference]: Finished difference Result 766 states and 1050 transitions. [2019-10-22 11:22:06,503 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-22 11:22:06,503 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 49 [2019-10-22 11:22:06,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:22:06,506 INFO L225 Difference]: With dead ends: 766 [2019-10-22 11:22:06,506 INFO L226 Difference]: Without dead ends: 624 [2019-10-22 11:22:06,507 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2019-10-22 11:22:06,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 624 states. [2019-10-22 11:22:06,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 624 to 288. [2019-10-22 11:22:06,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 288 states. [2019-10-22 11:22:06,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 378 transitions. [2019-10-22 11:22:06,540 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 378 transitions. Word has length 49 [2019-10-22 11:22:06,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:22:06,541 INFO L462 AbstractCegarLoop]: Abstraction has 288 states and 378 transitions. [2019-10-22 11:22:06,541 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 11:22:06,541 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 378 transitions. [2019-10-22 11:22:06,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2019-10-22 11:22:06,542 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:22:06,542 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:22:06,742 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:22:06,743 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:22:06,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:22:06,743 INFO L82 PathProgramCache]: Analyzing trace with hash -337830252, now seen corresponding path program 1 times [2019-10-22 11:22:06,744 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:22:06,744 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [305948293] [2019-10-22 11:22:06,744 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0ae2a47c-f690-4647-a76b-505044e0a6f9/bin/utaipan/cvc4 Starting monitored process 10 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:22:06,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:22:06,900 INFO L256 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-22 11:22:06,902 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:22:06,941 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-22 11:22:06,944 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:22:06,999 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-22 11:22:07,001 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [305948293] [2019-10-22 11:22:07,002 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [86829236] [2019-10-22 11:22:07,002 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0ae2a47c-f690-4647-a76b-505044e0a6f9/bin/utaipan/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:22:07,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:22:07,124 INFO L256 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-22 11:22:07,126 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:22:07,144 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-22 11:22:07,144 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:22:07,157 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-22 11:22:07,159 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-22 11:22:07,159 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5] total 9 [2019-10-22 11:22:07,159 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172687374] [2019-10-22 11:22:07,161 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-22 11:22:07,161 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:22:07,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-22 11:22:07,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-10-22 11:22:07,162 INFO L87 Difference]: Start difference. First operand 288 states and 378 transitions. Second operand 10 states. [2019-10-22 11:22:08,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:22:08,096 INFO L93 Difference]: Finished difference Result 1895 states and 2527 transitions. [2019-10-22 11:22:08,096 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-10-22 11:22:08,097 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 50 [2019-10-22 11:22:08,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:22:08,102 INFO L225 Difference]: With dead ends: 1895 [2019-10-22 11:22:08,102 INFO L226 Difference]: Without dead ends: 1661 [2019-10-22 11:22:08,104 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 187 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=198, Invalid=558, Unknown=0, NotChecked=0, Total=756 [2019-10-22 11:22:08,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1661 states. [2019-10-22 11:22:08,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1661 to 520. [2019-10-22 11:22:08,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 520 states. [2019-10-22 11:22:08,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 520 states to 520 states and 692 transitions. [2019-10-22 11:22:08,166 INFO L78 Accepts]: Start accepts. Automaton has 520 states and 692 transitions. Word has length 50 [2019-10-22 11:22:08,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:22:08,166 INFO L462 AbstractCegarLoop]: Abstraction has 520 states and 692 transitions. [2019-10-22 11:22:08,167 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-22 11:22:08,167 INFO L276 IsEmpty]: Start isEmpty. Operand 520 states and 692 transitions. [2019-10-22 11:22:08,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2019-10-22 11:22:08,167 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:22:08,168 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:22:08,568 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 cvc4 --incremental --print-success --lang smt --rewrite-divk,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:22:08,569 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:22:08,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:22:08,569 INFO L82 PathProgramCache]: Analyzing trace with hash -1076130248, now seen corresponding path program 2 times [2019-10-22 11:22:08,569 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:22:08,569 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [565556882] [2019-10-22 11:22:08,569 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0ae2a47c-f690-4647-a76b-505044e0a6f9/bin/utaipan/cvc4 Starting monitored process 12 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:22:10,445 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-10-22 11:22:10,445 INFO L250 tOrderPrioritization]: Conjunction of SSA is sat [2019-10-22 11:22:12,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 11:22:12,745 INFO L168 tionRefinementEngine]: Strategy WALRUS found a feasible trace [2019-10-22 11:22:12,746 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-22 11:22:12,946 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:22:13,133 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 11:22:13 BoogieIcfgContainer [2019-10-22 11:22:13,134 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 11:22:13,134 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 11:22:13,135 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 11:22:13,135 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 11:22:13,135 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:22:01" (3/4) ... [2019-10-22 11:22:13,137 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-10-22 11:22:13,289 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_0ae2a47c-f690-4647-a76b-505044e0a6f9/bin/utaipan/witness.graphml [2019-10-22 11:22:13,290 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 11:22:13,292 INFO L168 Benchmark]: Toolchain (without parser) took 13689.71 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 284.7 MB). Free memory was 947.0 MB in the beginning and 1.0 GB in the end (delta: -82.7 MB). Peak memory consumption was 202.0 MB. Max. memory is 11.5 GB. [2019-10-22 11:22:13,292 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 972.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:22:13,293 INFO L168 Benchmark]: CACSL2BoogieTranslator took 651.08 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 164.1 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -204.7 MB). Peak memory consumption was 24.7 MB. Max. memory is 11.5 GB. [2019-10-22 11:22:13,293 INFO L168 Benchmark]: Boogie Procedure Inliner took 74.18 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2019-10-22 11:22:13,293 INFO L168 Benchmark]: Boogie Preprocessor took 76.35 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:22:13,293 INFO L168 Benchmark]: RCFGBuilder took 993.92 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: 62.7 MB). Peak memory consumption was 62.7 MB. Max. memory is 11.5 GB. [2019-10-22 11:22:13,294 INFO L168 Benchmark]: TraceAbstraction took 11733.19 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 120.6 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 22.4 MB). Peak memory consumption was 143.0 MB. Max. memory is 11.5 GB. [2019-10-22 11:22:13,294 INFO L168 Benchmark]: Witness Printer took 155.83 ms. Allocated memory is still 1.3 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 25.1 MB). Peak memory consumption was 25.1 MB. Max. memory is 11.5 GB. [2019-10-22 11:22:13,296 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 1.0 GB. Free memory is still 972.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 651.08 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 164.1 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -204.7 MB). Peak memory consumption was 24.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 74.18 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 76.35 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 993.92 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: 62.7 MB). Peak memory consumption was 62.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 11733.19 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 120.6 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 22.4 MB). Peak memory consumption was 143.0 MB. Max. memory is 11.5 GB. * Witness Printer took 155.83 ms. Allocated memory is still 1.3 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 25.1 MB). Peak memory consumption was 25.1 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 247]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L40] int cleanupTimeShifts = 4; [L149] int waterLevel = 1; [L150] int methaneLevelCritical = 0; [L349] int pumpRunning = 0; [L350] int systemActive = 1; [L704] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L121] int retValue_acc ; [L122] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L927] int retValue_acc ; [L930] retValue_acc = 1 [L931] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L128] tmp = valid_product() [L130] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L281] int splverifierCounter ; [L282] int tmp ; [L283] int tmp___0 ; [L284] int tmp___1 ; [L285] int tmp___2 ; [L288] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L290] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L292] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L298] tmp = __VERIFIER_nondet_int() [L300] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L167] COND TRUE waterLevel < 2 [L168] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L308] tmp___0 = __VERIFIER_nondet_int() [L310] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L318] tmp___2 = __VERIFIER_nondet_int() [L320] COND TRUE \read(tmp___2) [L530] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L356] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L363] COND TRUE \read(systemActive) [L411] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L414] COND FALSE !(\read(pumpRunning)) [L385] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L388] COND TRUE ! pumpRunning [L508] int retValue_acc ; [L509] int tmp ; [L510] int tmp___0 ; [L229] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L232] COND FALSE !(waterLevel < 2) [L236] retValue_acc = 0 [L237] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L514] tmp = isHighWaterSensorDry() [L516] COND FALSE !(\read(tmp)) [L519] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L521] retValue_acc = tmp___0 [L522] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L390] tmp = isHighWaterLevel() [L392] COND TRUE \read(tmp) [L439] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L254] int tmp ; [L255] int tmp___0 ; [L220] int retValue_acc ; [L223] retValue_acc = waterLevel [L224] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L259] tmp = getWaterLevel() [L261] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L290] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L292] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L298] tmp = __VERIFIER_nondet_int() [L300] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L308] tmp___0 = __VERIFIER_nondet_int() [L310] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L318] tmp___2 = __VERIFIER_nondet_int() [L320] COND TRUE \read(tmp___2) [L530] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L356] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L155] COND TRUE waterLevel > 0 [L156] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L363] COND TRUE \read(systemActive) [L411] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L414] COND TRUE \read(pumpRunning) [L452] int retValue_acc ; [L188] int retValue_acc ; [L191] retValue_acc = methaneLevelCritical [L192] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L456] retValue_acc = isMethaneLevelCritical() [L458] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L416] tmp = isMethaneAlarm() [L418] COND FALSE !(\read(tmp)) [L385] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L388] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L254] int tmp ; [L255] int tmp___0 ; [L220] int retValue_acc ; [L223] retValue_acc = waterLevel [L224] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L259] tmp = getWaterLevel() [L261] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L290] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L292] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L298] tmp = __VERIFIER_nondet_int() [L300] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L308] tmp___0 = __VERIFIER_nondet_int() [L310] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L318] tmp___2 = __VERIFIER_nondet_int() [L320] COND TRUE \read(tmp___2) [L530] systemActive = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L356] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L155] COND TRUE waterLevel > 0 [L156] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L363] COND TRUE \read(systemActive) [L411] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L414] COND TRUE \read(pumpRunning) [L452] int retValue_acc ; [L188] int retValue_acc ; [L191] retValue_acc = methaneLevelCritical [L192] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L456] retValue_acc = isMethaneLevelCritical() [L458] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L416] tmp = isMethaneAlarm() [L418] COND FALSE !(\read(tmp)) [L385] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L388] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L254] int tmp ; [L255] int tmp___0 ; [L220] int retValue_acc ; [L223] retValue_acc = waterLevel [L224] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L259] tmp = getWaterLevel() [L261] COND TRUE tmp == 0 [L463] int retValue_acc ; [L466] retValue_acc = pumpRunning [L467] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L263] tmp___0 = isPumpRunning() [L265] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L247] __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, 111 locations, 3 error locations. Result: UNSAFE, OverallTime: 11.6s, OverallIterations: 10, TraceHistogramMax: 3, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 1388 SDtfs, 3329 SDslu, 3344 SDs, 0 SdLazy, 660 SolverSat, 216 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 686 GetRequests, 621 SyntacticMatches, 1 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 215 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=520occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 9 MinimizatonAttempts, 2341 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 2.5s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 403 NumberOfCodeBlocks, 403 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 648 ConstructedInterpolants, 0 QuantifiedInterpolants, 73480 SizeOfPredicates, 26 NumberOfNonLiveVariables, 1997 ConjunctsInSsa, 44 ConjunctsInUnsatCore, 20 InterpolantComputations, 16 PerfectInterpolantSequences, 52/88 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...