./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/minepump_spec4_product35.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_8b6cd3cb-2719-437e-9948-18a02c2e8046/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_8b6cd3cb-2719-437e-9948-18a02c2e8046/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_8b6cd3cb-2719-437e-9948-18a02c2e8046/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_8b6cd3cb-2719-437e-9948-18a02c2e8046/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product35.cil.c -s /tmp/vcloud-vcloud-master/worker/working_dir_8b6cd3cb-2719-437e-9948-18a02c2e8046/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_8b6cd3cb-2719-437e-9948-18a02c2e8046/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 cad5f4eca7a20f7ca6dddfa07fda554bac28f7be .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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_8b6cd3cb-2719-437e-9948-18a02c2e8046/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_8b6cd3cb-2719-437e-9948-18a02c2e8046/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_8b6cd3cb-2719-437e-9948-18a02c2e8046/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_8b6cd3cb-2719-437e-9948-18a02c2e8046/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/minepump_spec4_product35.cil.c -s /tmp/vcloud-vcloud-master/worker/working_dir_8b6cd3cb-2719-437e-9948-18a02c2e8046/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_8b6cd3cb-2719-437e-9948-18a02c2e8046/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 cad5f4eca7a20f7ca6dddfa07fda554bac28f7be .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 11:22:31,505 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:22:31,507 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:22:31,517 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:22:31,517 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:22:31,518 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:22:31,520 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:22:31,521 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:22:31,522 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:22:31,523 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:22:31,525 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:22:31,526 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:22:31,526 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:22:31,527 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:22:31,528 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:22:31,528 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:22:31,529 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:22:31,529 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:22:31,531 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:22:31,538 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:22:31,539 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:22:31,540 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:22:31,540 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:22:31,541 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:22:31,542 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:22:31,543 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:22:31,543 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:22:31,548 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:22:31,549 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:22:31,549 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:22:31,549 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:22:31,550 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:22:31,550 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:22:31,551 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:22:31,554 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:22:31,554 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:22:31,554 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:22:31,555 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:22:31,555 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:22:31,555 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:22:31,556 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:22:31,556 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_8b6cd3cb-2719-437e-9948-18a02c2e8046/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-10-22 11:22:31,572 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:22:31,572 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:22:31,573 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:22:31,573 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:22:31,573 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:22:31,573 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:22:31,573 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-10-22 11:22:31,573 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:22:31,574 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:22:31,574 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-10-22 11:22:31,574 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-10-22 11:22:31,574 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:22:31,575 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:22:31,575 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:22:31,575 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 11:22:31,584 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:22:31,584 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:22:31,584 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:22:31,584 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:22:31,584 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:22:31,585 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:22:31,585 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:22:31,585 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:22:31,585 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:22:31,585 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:22:31,585 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:22:31,586 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:22:31,586 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:22:31,586 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:22:31,586 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:22:31,586 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:22:31,586 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-22 11:22:31,587 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 11:22:31,587 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:22:31,587 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:22:31,588 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_8b6cd3cb-2719-437e-9948-18a02c2e8046/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 -> cad5f4eca7a20f7ca6dddfa07fda554bac28f7be [2019-10-22 11:22:31,615 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:22:31,624 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:22:31,627 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:22:31,628 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:22:31,629 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:22:31,629 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_8b6cd3cb-2719-437e-9948-18a02c2e8046/bin/utaipan/../../sv-benchmarks/c/product-lines/minepump_spec4_product35.cil.c [2019-10-22 11:22:31,678 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_8b6cd3cb-2719-437e-9948-18a02c2e8046/bin/utaipan/data/c6bed79a7/28d0d211a297450382a1df613e07349b/FLAG2a7da4c8a [2019-10-22 11:22:32,124 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:22:32,125 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_8b6cd3cb-2719-437e-9948-18a02c2e8046/sv-benchmarks/c/product-lines/minepump_spec4_product35.cil.c [2019-10-22 11:22:32,135 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_8b6cd3cb-2719-437e-9948-18a02c2e8046/bin/utaipan/data/c6bed79a7/28d0d211a297450382a1df613e07349b/FLAG2a7da4c8a [2019-10-22 11:22:32,145 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_8b6cd3cb-2719-437e-9948-18a02c2e8046/bin/utaipan/data/c6bed79a7/28d0d211a297450382a1df613e07349b [2019-10-22 11:22:32,147 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:22:32,149 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:22:32,150 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:22:32,150 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:22:32,153 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:22:32,154 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:22:32" (1/1) ... [2019-10-22 11:22:32,156 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c1ea15e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:32, skipping insertion in model container [2019-10-22 11:22:32,157 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:22:32" (1/1) ... [2019-10-22 11:22:32,163 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:22:32,197 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:22:32,534 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:22:32,546 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:22:32,632 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:22:32,659 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:22:32,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:32 WrapperNode [2019-10-22 11:22:32,660 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:22:32,660 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:22:32,660 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:22:32,660 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:22:32,668 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:32" (1/1) ... [2019-10-22 11:22:32,682 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:32" (1/1) ... [2019-10-22 11:22:32,719 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:22:32,719 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:22:32,719 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:22:32,719 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:22:32,726 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:32" (1/1) ... [2019-10-22 11:22:32,726 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:32" (1/1) ... [2019-10-22 11:22:32,729 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:32" (1/1) ... [2019-10-22 11:22:32,729 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:32" (1/1) ... [2019-10-22 11:22:32,736 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:32" (1/1) ... [2019-10-22 11:22:32,741 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:32" (1/1) ... [2019-10-22 11:22:32,743 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:32" (1/1) ... [2019-10-22 11:22:32,746 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:22:32,746 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:22:32,746 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:22:32,747 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:22:32,747 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:32" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8b6cd3cb-2719-437e-9948-18a02c2e8046/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 11:22:32,810 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 11:22:32,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-10-22 11:22:32,810 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:22:32,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:22:33,496 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:22:33,497 INFO L284 CfgBuilder]: Removed 100 assume(true) statements. [2019-10-22 11:22:33,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:22:33 BoogieIcfgContainer [2019-10-22 11:22:33,498 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:22:33,499 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:22:33,499 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:22:33,502 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:22:33,502 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:22:32" (1/3) ... [2019-10-22 11:22:33,503 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@165fb2c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:22:33, skipping insertion in model container [2019-10-22 11:22:33,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:32" (2/3) ... [2019-10-22 11:22:33,503 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@165fb2c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:22:33, skipping insertion in model container [2019-10-22 11:22:33,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:22:33" (3/3) ... [2019-10-22 11:22:33,505 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product35.cil.c [2019-10-22 11:22:33,514 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:22:33,521 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-10-22 11:22:33,531 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-10-22 11:22:33,553 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:22:33,553 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:22:33,553 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:22:33,553 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:22:33,554 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:22:33,554 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:22:33,554 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:22:33,554 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:22:33,567 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states. [2019-10-22 11:22:33,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-22 11:22:33,574 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:22:33,574 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:22:33,576 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:22:33,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:22:33,581 INFO L82 PathProgramCache]: Analyzing trace with hash -1355288485, now seen corresponding path program 1 times [2019-10-22 11:22:33,589 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:22:33,589 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597843102] [2019-10-22 11:22:33,589 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:22:33,589 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:22:33,590 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:22:33,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:22:33,805 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 11:22:33,806 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597843102] [2019-10-22 11:22:33,806 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:22:33,807 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 11:22:33,808 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701931245] [2019-10-22 11:22:33,811 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-22 11:22:33,813 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:22:33,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-22 11:22:33,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 11:22:33,825 INFO L87 Difference]: Start difference. First operand 80 states. Second operand 2 states. [2019-10-22 11:22:33,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:22:33,846 INFO L93 Difference]: Finished difference Result 154 states and 233 transitions. [2019-10-22 11:22:33,846 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 11:22:33,847 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2019-10-22 11:22:33,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:22:33,856 INFO L225 Difference]: With dead ends: 154 [2019-10-22 11:22:33,857 INFO L226 Difference]: Without dead ends: 76 [2019-10-22 11:22:33,860 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 11:22:33,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2019-10-22 11:22:33,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2019-10-22 11:22:33,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2019-10-22 11:22:33,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 108 transitions. [2019-10-22 11:22:33,892 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 108 transitions. Word has length 16 [2019-10-22 11:22:33,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:22:33,893 INFO L462 AbstractCegarLoop]: Abstraction has 76 states and 108 transitions. [2019-10-22 11:22:33,893 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-22 11:22:33,893 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 108 transitions. [2019-10-22 11:22:33,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-22 11:22:33,894 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:22:33,894 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 11:22:33,894 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:22:33,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:22:33,894 INFO L82 PathProgramCache]: Analyzing trace with hash 1892921914, now seen corresponding path program 1 times [2019-10-22 11:22:33,894 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:22:33,895 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712184991] [2019-10-22 11:22:33,895 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:22:33,895 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:22:33,895 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:22:33,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:22:34,010 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 11:22:34,011 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712184991] [2019-10-22 11:22:34,011 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:22:34,011 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 11:22:34,011 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856045371] [2019-10-22 11:22:34,012 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:22:34,013 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:22:34,013 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:22:34,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:22:34,013 INFO L87 Difference]: Start difference. First operand 76 states and 108 transitions. Second operand 3 states. [2019-10-22 11:22:34,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:22:34,022 INFO L93 Difference]: Finished difference Result 76 states and 108 transitions. [2019-10-22 11:22:34,023 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:22:34,023 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2019-10-22 11:22:34,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:22:34,024 INFO L225 Difference]: With dead ends: 76 [2019-10-22 11:22:34,024 INFO L226 Difference]: Without dead ends: 36 [2019-10-22 11:22:34,025 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 11:22:34,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-10-22 11:22:34,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2019-10-22 11:22:34,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-10-22 11:22:34,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 51 transitions. [2019-10-22 11:22:34,029 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 51 transitions. Word has length 17 [2019-10-22 11:22:34,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:22:34,029 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 51 transitions. [2019-10-22 11:22:34,029 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:22:34,029 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 51 transitions. [2019-10-22 11:22:34,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-10-22 11:22:34,030 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:22:34,030 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 11:22:34,030 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:22:34,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:22:34,031 INFO L82 PathProgramCache]: Analyzing trace with hash -1160602350, now seen corresponding path program 1 times [2019-10-22 11:22:34,031 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:22:34,031 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939238012] [2019-10-22 11:22:34,032 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:22:34,032 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:22:34,032 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:22:34,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:22:34,128 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 11:22:34,128 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1939238012] [2019-10-22 11:22:34,129 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:22:34,129 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 11:22:34,129 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865166391] [2019-10-22 11:22:34,129 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:22:34,129 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:22:34,130 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:22:34,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:22:34,130 INFO L87 Difference]: Start difference. First operand 36 states and 51 transitions. Second operand 3 states. [2019-10-22 11:22:34,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:22:34,145 INFO L93 Difference]: Finished difference Result 96 states and 141 transitions. [2019-10-22 11:22:34,145 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:22:34,146 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2019-10-22 11:22:34,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:22:34,147 INFO L225 Difference]: With dead ends: 96 [2019-10-22 11:22:34,147 INFO L226 Difference]: Without dead ends: 66 [2019-10-22 11:22:34,147 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 11:22:34,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2019-10-22 11:22:34,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 62. [2019-10-22 11:22:34,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2019-10-22 11:22:34,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 91 transitions. [2019-10-22 11:22:34,155 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 91 transitions. Word has length 22 [2019-10-22 11:22:34,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:22:34,156 INFO L462 AbstractCegarLoop]: Abstraction has 62 states and 91 transitions. [2019-10-22 11:22:34,156 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:22:34,156 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 91 transitions. [2019-10-22 11:22:34,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2019-10-22 11:22:34,157 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:22:34,157 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:22:34,157 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:22:34,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:22:34,157 INFO L82 PathProgramCache]: Analyzing trace with hash 1572373846, now seen corresponding path program 1 times [2019-10-22 11:22:34,158 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:22:34,158 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79006196] [2019-10-22 11:22:34,158 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:22:34,158 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:22:34,158 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:22:34,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:22:34,227 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 11:22:34,227 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79006196] [2019-10-22 11:22:34,227 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:22:34,227 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 11:22:34,227 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533509974] [2019-10-22 11:22:34,228 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:22:34,228 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:22:34,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:22:34,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:22:34,228 INFO L87 Difference]: Start difference. First operand 62 states and 91 transitions. Second operand 3 states. [2019-10-22 11:22:34,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:22:34,282 INFO L93 Difference]: Finished difference Result 159 states and 238 transitions. [2019-10-22 11:22:34,285 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:22:34,285 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2019-10-22 11:22:34,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:22:34,286 INFO L225 Difference]: With dead ends: 159 [2019-10-22 11:22:34,286 INFO L226 Difference]: Without dead ends: 103 [2019-10-22 11:22:34,286 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 11:22:34,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2019-10-22 11:22:34,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 101. [2019-10-22 11:22:34,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2019-10-22 11:22:34,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 147 transitions. [2019-10-22 11:22:34,298 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 147 transitions. Word has length 23 [2019-10-22 11:22:34,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:22:34,298 INFO L462 AbstractCegarLoop]: Abstraction has 101 states and 147 transitions. [2019-10-22 11:22:34,298 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:22:34,298 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 147 transitions. [2019-10-22 11:22:34,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-10-22 11:22:34,298 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:22:34,299 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 11:22:34,299 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:22:34,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:22:34,300 INFO L82 PathProgramCache]: Analyzing trace with hash 1956458727, now seen corresponding path program 1 times [2019-10-22 11:22:34,301 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:22:34,301 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720905388] [2019-10-22 11:22:34,301 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:22:34,301 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:22:34,301 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:22:34,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:22:34,397 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 11:22:34,397 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720905388] [2019-10-22 11:22:34,397 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:22:34,397 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 11:22:34,398 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623615593] [2019-10-22 11:22:34,398 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:22:34,398 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:22:34,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:22:34,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:22:34,399 INFO L87 Difference]: Start difference. First operand 101 states and 147 transitions. Second operand 5 states. [2019-10-22 11:22:34,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:22:34,513 INFO L93 Difference]: Finished difference Result 369 states and 545 transitions. [2019-10-22 11:22:34,513 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 11:22:34,513 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2019-10-22 11:22:34,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:22:34,515 INFO L225 Difference]: With dead ends: 369 [2019-10-22 11:22:34,515 INFO L226 Difference]: Without dead ends: 274 [2019-10-22 11:22:34,516 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 11:22:34,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2019-10-22 11:22:34,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 182. [2019-10-22 11:22:34,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2019-10-22 11:22:34,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 256 transitions. [2019-10-22 11:22:34,535 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 256 transitions. Word has length 25 [2019-10-22 11:22:34,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:22:34,536 INFO L462 AbstractCegarLoop]: Abstraction has 182 states and 256 transitions. [2019-10-22 11:22:34,536 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:22:34,536 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 256 transitions. [2019-10-22 11:22:34,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-10-22 11:22:34,537 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:22:34,537 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] [2019-10-22 11:22:34,537 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:22:34,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:22:34,538 INFO L82 PathProgramCache]: Analyzing trace with hash -2850263, now seen corresponding path program 1 times [2019-10-22 11:22:34,538 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:22:34,538 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909416895] [2019-10-22 11:22:34,538 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:22:34,538 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:22:34,539 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:22:34,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:22:34,606 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 11:22:34,606 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909416895] [2019-10-22 11:22:34,606 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:22:34,607 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 11:22:34,607 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842053964] [2019-10-22 11:22:34,607 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:22:34,607 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:22:34,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:22:34,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:22:34,608 INFO L87 Difference]: Start difference. First operand 182 states and 256 transitions. Second operand 5 states. [2019-10-22 11:22:34,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:22:34,868 INFO L93 Difference]: Finished difference Result 368 states and 530 transitions. [2019-10-22 11:22:34,870 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-22 11:22:34,870 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2019-10-22 11:22:34,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:22:34,872 INFO L225 Difference]: With dead ends: 368 [2019-10-22 11:22:34,872 INFO L226 Difference]: Without dead ends: 366 [2019-10-22 11:22:34,873 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 11:22:34,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2019-10-22 11:22:34,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 182. [2019-10-22 11:22:34,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2019-10-22 11:22:34,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 254 transitions. [2019-10-22 11:22:34,907 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 254 transitions. Word has length 26 [2019-10-22 11:22:34,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:22:34,908 INFO L462 AbstractCegarLoop]: Abstraction has 182 states and 254 transitions. [2019-10-22 11:22:34,908 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:22:34,908 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 254 transitions. [2019-10-22 11:22:34,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-10-22 11:22:34,909 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:22:34,909 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 11:22:34,910 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:22:34,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:22:34,910 INFO L82 PathProgramCache]: Analyzing trace with hash -2047428375, now seen corresponding path program 1 times [2019-10-22 11:22:34,910 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:22:34,910 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217581469] [2019-10-22 11:22:34,910 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:22:34,911 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:22:34,911 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:22:34,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:22:34,971 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 11:22:34,971 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217581469] [2019-10-22 11:22:34,971 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:22:34,971 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 11:22:34,972 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739593007] [2019-10-22 11:22:34,972 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:22:34,972 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:22:34,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:22:34,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:22:34,973 INFO L87 Difference]: Start difference. First operand 182 states and 254 transitions. Second operand 5 states. [2019-10-22 11:22:35,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:22:35,034 INFO L93 Difference]: Finished difference Result 505 states and 702 transitions. [2019-10-22 11:22:35,035 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 11:22:35,035 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2019-10-22 11:22:35,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:22:35,037 INFO L225 Difference]: With dead ends: 505 [2019-10-22 11:22:35,037 INFO L226 Difference]: Without dead ends: 329 [2019-10-22 11:22:35,038 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 11:22:35,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2019-10-22 11:22:35,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 194. [2019-10-22 11:22:35,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2019-10-22 11:22:35,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 266 transitions. [2019-10-22 11:22:35,069 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 266 transitions. Word has length 30 [2019-10-22 11:22:35,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:22:35,070 INFO L462 AbstractCegarLoop]: Abstraction has 194 states and 266 transitions. [2019-10-22 11:22:35,071 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:22:35,071 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 266 transitions. [2019-10-22 11:22:35,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-10-22 11:22:35,072 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:22:35,072 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 11:22:35,072 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:22:35,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:22:35,073 INFO L82 PathProgramCache]: Analyzing trace with hash 1854511911, now seen corresponding path program 1 times [2019-10-22 11:22:35,073 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:22:35,073 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287636046] [2019-10-22 11:22:35,073 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:22:35,073 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:22:35,073 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:22:35,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:22:35,120 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 11:22:35,121 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287636046] [2019-10-22 11:22:35,121 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:22:35,121 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-22 11:22:35,121 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842645000] [2019-10-22 11:22:35,121 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 11:22:35,122 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:22:35,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 11:22:35,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-22 11:22:35,122 INFO L87 Difference]: Start difference. First operand 194 states and 266 transitions. Second operand 4 states. [2019-10-22 11:22:35,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:22:35,160 INFO L93 Difference]: Finished difference Result 426 states and 583 transitions. [2019-10-22 11:22:35,160 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 11:22:35,161 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2019-10-22 11:22:35,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:22:35,162 INFO L225 Difference]: With dead ends: 426 [2019-10-22 11:22:35,162 INFO L226 Difference]: Without dead ends: 238 [2019-10-22 11:22:35,163 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 11:22:35,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2019-10-22 11:22:35,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 159. [2019-10-22 11:22:35,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2019-10-22 11:22:35,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 214 transitions. [2019-10-22 11:22:35,177 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 214 transitions. Word has length 30 [2019-10-22 11:22:35,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:22:35,177 INFO L462 AbstractCegarLoop]: Abstraction has 159 states and 214 transitions. [2019-10-22 11:22:35,178 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 11:22:35,178 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 214 transitions. [2019-10-22 11:22:35,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-10-22 11:22:35,181 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:22:35,182 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 11:22:35,182 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:22:35,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:22:35,183 INFO L82 PathProgramCache]: Analyzing trace with hash 2112677349, now seen corresponding path program 1 times [2019-10-22 11:22:35,183 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:22:35,183 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855234101] [2019-10-22 11:22:35,183 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:22:35,183 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:22:35,184 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:22:35,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:22:35,237 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 11:22:35,237 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855234101] [2019-10-22 11:22:35,237 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:22:35,237 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-22 11:22:35,237 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401275608] [2019-10-22 11:22:35,238 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:22:35,238 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:22:35,238 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:22:35,238 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:22:35,238 INFO L87 Difference]: Start difference. First operand 159 states and 214 transitions. Second operand 5 states. [2019-10-22 11:22:35,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:22:35,329 INFO L93 Difference]: Finished difference Result 420 states and 588 transitions. [2019-10-22 11:22:35,330 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 11:22:35,330 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2019-10-22 11:22:35,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:22:35,331 INFO L225 Difference]: With dead ends: 420 [2019-10-22 11:22:35,331 INFO L226 Difference]: Without dead ends: 315 [2019-10-22 11:22:35,332 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 11:22:35,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2019-10-22 11:22:35,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 236. [2019-10-22 11:22:35,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2019-10-22 11:22:35,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 315 transitions. [2019-10-22 11:22:35,350 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 315 transitions. Word has length 30 [2019-10-22 11:22:35,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:22:35,351 INFO L462 AbstractCegarLoop]: Abstraction has 236 states and 315 transitions. [2019-10-22 11:22:35,351 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:22:35,351 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 315 transitions. [2019-10-22 11:22:35,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-10-22 11:22:35,352 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:22:35,352 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:22:35,352 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:22:35,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:22:35,353 INFO L82 PathProgramCache]: Analyzing trace with hash 1942803224, now seen corresponding path program 1 times [2019-10-22 11:22:35,353 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:22:35,353 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493467255] [2019-10-22 11:22:35,353 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:22:35,353 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:22:35,354 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:22:35,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:22:35,415 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 11:22:35,415 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493467255] [2019-10-22 11:22:35,415 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [636673888] [2019-10-22 11:22:35,416 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8b6cd3cb-2719-437e-9948-18a02c2e8046/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 11:22:35,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:22:35,543 INFO L256 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-22 11:22:35,549 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:22:35,577 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 11:22:35,577 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:22:35,646 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 11:22:35,648 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [965888217] [2019-10-22 11:22:35,655 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 46 [2019-10-22 11:22:35,705 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2019-10-22 11:22:35,706 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-22 11:22:36,163 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:22:36,163 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 11:22:36,168 INFO L168 Benchmark]: Toolchain (without parser) took 4018.90 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 246.9 MB). Free memory was 947.7 MB in the beginning and 1.2 GB in the end (delta: -246.5 MB). Peak memory consumption was 413.5 kB. Max. memory is 11.5 GB. [2019-10-22 11:22:36,168 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 963.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:22:36,169 INFO L168 Benchmark]: CACSL2BoogieTranslator took 510.16 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 177.7 MB). Free memory was 942.3 MB in the beginning and 1.2 GB in the end (delta: -217.8 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. [2019-10-22 11:22:36,169 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.57 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-10-22 11:22:36,170 INFO L168 Benchmark]: Boogie Preprocessor took 27.19 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:22:36,170 INFO L168 Benchmark]: RCFGBuilder took 751.60 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 62.7 MB). Peak memory consumption was 62.7 MB. Max. memory is 11.5 GB. [2019-10-22 11:22:36,171 INFO L168 Benchmark]: TraceAbstraction took 2667.56 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 69.2 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -103.7 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:22:36,180 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 963.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 510.16 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 177.7 MB). Free memory was 942.3 MB in the beginning and 1.2 GB in the end (delta: -217.8 MB). Peak memory consumption was 18.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 58.57 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 27.19 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 751.60 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 62.7 MB). Peak memory consumption was 62.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2667.56 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 69.2 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -103.7 MB). There was no memory consumed. 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 11:22:38,182 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:22:38,183 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:22:38,192 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:22:38,193 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:22:38,193 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:22:38,194 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:22:38,196 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:22:38,197 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:22:38,198 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:22:38,198 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:22:38,199 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:22:38,200 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:22:38,200 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:22:38,201 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:22:38,202 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:22:38,202 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:22:38,203 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:22:38,204 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:22:38,206 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:22:38,207 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:22:38,208 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:22:38,209 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:22:38,209 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:22:38,211 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:22:38,211 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:22:38,211 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:22:38,212 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:22:38,212 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:22:38,213 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:22:38,213 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:22:38,214 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:22:38,214 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:22:38,215 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:22:38,216 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:22:38,216 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:22:38,216 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:22:38,217 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:22:38,217 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:22:38,217 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:22:38,218 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:22:38,218 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_8b6cd3cb-2719-437e-9948-18a02c2e8046/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2019-10-22 11:22:38,230 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:22:38,230 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:22:38,231 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:22:38,231 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:22:38,231 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:22:38,231 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:22:38,231 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:22:38,231 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:22:38,232 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:22:38,232 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:22:38,232 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:22:38,232 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:22:38,233 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:22:38,233 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:22:38,233 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:22:38,233 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:22:38,233 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-10-22 11:22:38,233 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-10-22 11:22:38,233 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:22:38,234 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:22:38,234 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 11:22:38,234 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:22:38,234 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:22:38,234 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:22:38,234 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:22:38,234 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:22:38,234 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:22:38,235 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:22:38,235 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:22:38,235 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:22:38,236 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-10-22 11:22:38,236 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-10-22 11:22:38,236 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:22:38,236 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:22:38,236 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_8b6cd3cb-2719-437e-9948-18a02c2e8046/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 -> cad5f4eca7a20f7ca6dddfa07fda554bac28f7be [2019-10-22 11:22:38,268 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:22:38,279 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:22:38,284 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:22:38,286 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:22:38,286 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:22:38,287 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_8b6cd3cb-2719-437e-9948-18a02c2e8046/bin/utaipan/../../sv-benchmarks/c/product-lines/minepump_spec4_product35.cil.c [2019-10-22 11:22:38,336 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_8b6cd3cb-2719-437e-9948-18a02c2e8046/bin/utaipan/data/14ecc0946/d85a0adcf1694bdfba859306021326f7/FLAG88a37a1eb [2019-10-22 11:22:38,747 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:22:38,748 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_8b6cd3cb-2719-437e-9948-18a02c2e8046/sv-benchmarks/c/product-lines/minepump_spec4_product35.cil.c [2019-10-22 11:22:38,758 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_8b6cd3cb-2719-437e-9948-18a02c2e8046/bin/utaipan/data/14ecc0946/d85a0adcf1694bdfba859306021326f7/FLAG88a37a1eb [2019-10-22 11:22:39,094 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_8b6cd3cb-2719-437e-9948-18a02c2e8046/bin/utaipan/data/14ecc0946/d85a0adcf1694bdfba859306021326f7 [2019-10-22 11:22:39,097 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:22:39,098 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:22:39,099 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:22:39,099 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:22:39,102 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:22:39,103 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:22:39" (1/1) ... [2019-10-22 11:22:39,106 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64fff581 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:39, skipping insertion in model container [2019-10-22 11:22:39,106 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:22:39" (1/1) ... [2019-10-22 11:22:39,112 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:22:39,162 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:22:39,478 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:22:39,499 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:22:39,660 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:22:39,705 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:22:39,705 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:39 WrapperNode [2019-10-22 11:22:39,705 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:22:39,706 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:22:39,706 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:22:39,706 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:22:39,715 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:39" (1/1) ... [2019-10-22 11:22:39,735 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:39" (1/1) ... [2019-10-22 11:22:39,775 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:22:39,779 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:22:39,779 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:22:39,780 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:22:39,788 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:39" (1/1) ... [2019-10-22 11:22:39,788 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:39" (1/1) ... [2019-10-22 11:22:39,791 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:39" (1/1) ... [2019-10-22 11:22:39,791 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:39" (1/1) ... [2019-10-22 11:22:39,799 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:39" (1/1) ... [2019-10-22 11:22:39,807 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:39" (1/1) ... [2019-10-22 11:22:39,817 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:39" (1/1) ... [2019-10-22 11:22:39,820 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:22:39,827 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:22:39,828 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:22:39,828 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:22:39,828 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:39" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8b6cd3cb-2719-437e-9948-18a02c2e8046/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 11:22:39,889 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-22 11:22:39,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2019-10-22 11:22:39,889 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:22:39,889 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:22:40,688 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:22:40,689 INFO L284 CfgBuilder]: Removed 100 assume(true) statements. [2019-10-22 11:22:40,690 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:22:40 BoogieIcfgContainer [2019-10-22 11:22:40,690 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:22:40,691 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:22:40,692 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:22:40,695 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:22:40,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:22:39" (1/3) ... [2019-10-22 11:22:40,696 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@667043c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:22:40, skipping insertion in model container [2019-10-22 11:22:40,696 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:22:39" (2/3) ... [2019-10-22 11:22:40,697 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@667043c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:22:40, skipping insertion in model container [2019-10-22 11:22:40,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:22:40" (3/3) ... [2019-10-22 11:22:40,699 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec4_product35.cil.c [2019-10-22 11:22:40,712 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:22:40,722 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-10-22 11:22:40,732 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-10-22 11:22:40,753 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:22:40,753 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:22:40,753 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:22:40,753 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:22:40,754 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:22:40,754 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:22:40,754 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:22:40,754 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:22:40,768 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states. [2019-10-22 11:22:40,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-22 11:22:40,775 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:22:40,776 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:22:40,778 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:22:40,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:22:40,783 INFO L82 PathProgramCache]: Analyzing trace with hash -1355288485, now seen corresponding path program 1 times [2019-10-22 11:22:40,794 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:22:40,794 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [328893554] [2019-10-22 11:22:40,794 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8b6cd3cb-2719-437e-9948-18a02c2e8046/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 11:22:40,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:22:40,983 INFO L256 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 1 conjunts are in the unsatisfiable core [2019-10-22 11:22:40,987 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:22:40,999 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 11:22:40,999 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:22:41,004 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 11:22:41,005 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [328893554] [2019-10-22 11:22:41,006 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:22:41,006 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-10-22 11:22:41,006 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621343474] [2019-10-22 11:22:41,010 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-22 11:22:41,010 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:22:41,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-22 11:22:41,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 11:22:41,026 INFO L87 Difference]: Start difference. First operand 80 states. Second operand 2 states. [2019-10-22 11:22:41,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:22:41,051 INFO L93 Difference]: Finished difference Result 154 states and 233 transitions. [2019-10-22 11:22:41,051 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 11:22:41,052 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2019-10-22 11:22:41,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:22:41,063 INFO L225 Difference]: With dead ends: 154 [2019-10-22 11:22:41,064 INFO L226 Difference]: Without dead ends: 76 [2019-10-22 11:22:41,067 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 11:22:41,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2019-10-22 11:22:41,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2019-10-22 11:22:41,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2019-10-22 11:22:41,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 108 transitions. [2019-10-22 11:22:41,104 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 108 transitions. Word has length 16 [2019-10-22 11:22:41,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:22:41,105 INFO L462 AbstractCegarLoop]: Abstraction has 76 states and 108 transitions. [2019-10-22 11:22:41,105 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-22 11:22:41,105 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 108 transitions. [2019-10-22 11:22:41,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-10-22 11:22:41,106 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:22:41,106 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 11:22:41,307 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:22:41,307 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:22:41,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:22:41,308 INFO L82 PathProgramCache]: Analyzing trace with hash 1892921914, now seen corresponding path program 1 times [2019-10-22 11:22:41,309 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:22:41,309 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1837922407] [2019-10-22 11:22:41,309 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8b6cd3cb-2719-437e-9948-18a02c2e8046/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 11:22:41,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:22:41,460 INFO L256 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 11:22:41,461 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:22:41,481 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 11:22:41,482 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:22:41,495 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 11:22:41,495 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1837922407] [2019-10-22 11:22:41,495 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:22:41,495 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2019-10-22 11:22:41,496 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008929188] [2019-10-22 11:22:41,497 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 11:22:41,497 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:22:41,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 11:22:41,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-22 11:22:41,498 INFO L87 Difference]: Start difference. First operand 76 states and 108 transitions. Second operand 4 states. [2019-10-22 11:22:41,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:22:41,606 INFO L93 Difference]: Finished difference Result 265 states and 381 transitions. [2019-10-22 11:22:41,608 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 11:22:41,608 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2019-10-22 11:22:41,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:22:41,610 INFO L225 Difference]: With dead ends: 265 [2019-10-22 11:22:41,611 INFO L226 Difference]: Without dead ends: 195 [2019-10-22 11:22:41,612 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 11:22:41,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2019-10-22 11:22:41,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 117. [2019-10-22 11:22:41,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2019-10-22 11:22:41,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 168 transitions. [2019-10-22 11:22:41,644 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 168 transitions. Word has length 17 [2019-10-22 11:22:41,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:22:41,644 INFO L462 AbstractCegarLoop]: Abstraction has 117 states and 168 transitions. [2019-10-22 11:22:41,644 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 11:22:41,644 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 168 transitions. [2019-10-22 11:22:41,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-10-22 11:22:41,645 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:22:41,645 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:22:41,846 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:22:41,846 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:22:41,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:22:41,847 INFO L82 PathProgramCache]: Analyzing trace with hash 1742345596, now seen corresponding path program 1 times [2019-10-22 11:22:41,847 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:22:41,847 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1753800029] [2019-10-22 11:22:41,848 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8b6cd3cb-2719-437e-9948-18a02c2e8046/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 11:22:42,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:22:42,020 INFO L256 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 11:22:42,021 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:22:42,035 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 11:22:42,035 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:22:42,037 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 11:22:42,038 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1753800029] [2019-10-22 11:22:42,038 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:22:42,038 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-10-22 11:22:42,038 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132535910] [2019-10-22 11:22:42,039 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:22:42,041 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:22:42,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:22:42,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:22:42,042 INFO L87 Difference]: Start difference. First operand 117 states and 168 transitions. Second operand 3 states. [2019-10-22 11:22:42,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:22:42,179 INFO L93 Difference]: Finished difference Result 273 states and 389 transitions. [2019-10-22 11:22:42,180 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:22:42,180 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2019-10-22 11:22:42,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:22:42,182 INFO L225 Difference]: With dead ends: 273 [2019-10-22 11:22:42,182 INFO L226 Difference]: Without dead ends: 162 [2019-10-22 11:22:42,182 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:22:42,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2019-10-22 11:22:42,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 156. [2019-10-22 11:22:42,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2019-10-22 11:22:42,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 214 transitions. [2019-10-22 11:22:42,201 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 214 transitions. Word has length 18 [2019-10-22 11:22:42,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:22:42,201 INFO L462 AbstractCegarLoop]: Abstraction has 156 states and 214 transitions. [2019-10-22 11:22:42,201 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:22:42,201 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 214 transitions. [2019-10-22 11:22:42,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-10-22 11:22:42,202 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:22:42,202 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 11:22:42,403 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:22:42,403 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:22:42,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:22:42,404 INFO L82 PathProgramCache]: Analyzing trace with hash 127533453, now seen corresponding path program 1 times [2019-10-22 11:22:42,404 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:22:42,404 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [849723632] [2019-10-22 11:22:42,405 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8b6cd3cb-2719-437e-9948-18a02c2e8046/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 11:22:42,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:22:42,538 INFO L256 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-22 11:22:42,539 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:22:42,562 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 11:22:42,562 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:22:42,576 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 11:22:42,576 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [849723632] [2019-10-22 11:22:42,576 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:22:42,576 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-10-22 11:22:42,577 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456015289] [2019-10-22 11:22:42,577 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:22:42,577 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:22:42,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:22:42,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:22:42,578 INFO L87 Difference]: Start difference. First operand 156 states and 214 transitions. Second operand 5 states. [2019-10-22 11:22:42,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:22:42,713 INFO L93 Difference]: Finished difference Result 465 states and 630 transitions. [2019-10-22 11:22:42,714 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-22 11:22:42,714 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2019-10-22 11:22:42,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:22:42,716 INFO L225 Difference]: With dead ends: 465 [2019-10-22 11:22:42,719 INFO L226 Difference]: Without dead ends: 315 [2019-10-22 11:22:42,720 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-22 11:22:42,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2019-10-22 11:22:42,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 165. [2019-10-22 11:22:42,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2019-10-22 11:22:42,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 223 transitions. [2019-10-22 11:22:42,760 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 223 transitions. Word has length 24 [2019-10-22 11:22:42,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:22:42,760 INFO L462 AbstractCegarLoop]: Abstraction has 165 states and 223 transitions. [2019-10-22 11:22:42,760 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:22:42,760 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 223 transitions. [2019-10-22 11:22:42,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-10-22 11:22:42,761 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:22:42,761 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 11:22:42,965 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:22:42,965 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:22:42,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:22:42,966 INFO L82 PathProgramCache]: Analyzing trace with hash -1504922800, now seen corresponding path program 1 times [2019-10-22 11:22:42,966 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:22:42,966 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1141811915] [2019-10-22 11:22:42,966 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8b6cd3cb-2719-437e-9948-18a02c2e8046/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 11:22:43,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:22:43,092 INFO L256 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-22 11:22:43,093 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:22:43,118 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 11:22:43,118 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:22:43,144 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 11:22:43,145 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1141811915] [2019-10-22 11:22:43,145 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:22:43,145 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2019-10-22 11:22:43,145 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247423029] [2019-10-22 11:22:43,145 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-22 11:22:43,146 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:22:43,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-22 11:22:43,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-10-22 11:22:43,146 INFO L87 Difference]: Start difference. First operand 165 states and 223 transitions. Second operand 8 states. [2019-10-22 11:22:43,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:22:43,634 INFO L93 Difference]: Finished difference Result 1043 states and 1429 transitions. [2019-10-22 11:22:43,635 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-22 11:22:43,635 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 24 [2019-10-22 11:22:43,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:22:43,638 INFO L225 Difference]: With dead ends: 1043 [2019-10-22 11:22:43,638 INFO L226 Difference]: Without dead ends: 884 [2019-10-22 11:22:43,639 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2019-10-22 11:22:43,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 884 states. [2019-10-22 11:22:43,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 884 to 426. [2019-10-22 11:22:43,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 426 states. [2019-10-22 11:22:43,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 555 transitions. [2019-10-22 11:22:43,703 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 555 transitions. Word has length 24 [2019-10-22 11:22:43,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:22:43,704 INFO L462 AbstractCegarLoop]: Abstraction has 426 states and 555 transitions. [2019-10-22 11:22:43,704 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-22 11:22:43,704 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 555 transitions. [2019-10-22 11:22:43,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2019-10-22 11:22:43,706 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:22:43,708 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:22:43,908 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:22:43,909 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:22:43,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:22:43,909 INFO L82 PathProgramCache]: Analyzing trace with hash 1809269261, now seen corresponding path program 1 times [2019-10-22 11:22:43,910 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:22:43,910 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1803052055] [2019-10-22 11:22:43,910 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8b6cd3cb-2719-437e-9948-18a02c2e8046/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 11:22:44,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:22:44,050 INFO L256 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-22 11:22:44,051 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:22:44,068 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 11:22:44,068 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:22:44,085 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 11:22:44,085 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1803052055] [2019-10-22 11:22:44,085 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:22:44,085 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-10-22 11:22:44,085 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197992010] [2019-10-22 11:22:44,086 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 11:22:44,086 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:22:44,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 11:22:44,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-22 11:22:44,087 INFO L87 Difference]: Start difference. First operand 426 states and 555 transitions. Second operand 6 states. [2019-10-22 11:22:44,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:22:44,213 INFO L93 Difference]: Finished difference Result 1115 states and 1441 transitions. [2019-10-22 11:22:44,213 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-22 11:22:44,213 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35 [2019-10-22 11:22:44,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:22:44,215 INFO L225 Difference]: With dead ends: 1115 [2019-10-22 11:22:44,216 INFO L226 Difference]: Without dead ends: 628 [2019-10-22 11:22:44,217 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-22 11:22:44,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2019-10-22 11:22:44,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 335. [2019-10-22 11:22:44,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335 states. [2019-10-22 11:22:44,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 438 transitions. [2019-10-22 11:22:44,252 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 438 transitions. Word has length 35 [2019-10-22 11:22:44,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:22:44,252 INFO L462 AbstractCegarLoop]: Abstraction has 335 states and 438 transitions. [2019-10-22 11:22:44,252 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 11:22:44,252 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 438 transitions. [2019-10-22 11:22:44,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-10-22 11:22:44,253 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:22:44,254 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:22:44,454 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:22:44,455 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:22:44,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:22:44,455 INFO L82 PathProgramCache]: Analyzing trace with hash -264639000, now seen corresponding path program 1 times [2019-10-22 11:22:44,455 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:22:44,455 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1685049076] [2019-10-22 11:22:44,455 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8b6cd3cb-2719-437e-9948-18a02c2e8046/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 11:22:44,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:22:44,583 INFO L256 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 11:22:44,584 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:22:44,597 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 11:22:44,597 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:22:44,600 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 11:22:44,601 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1685049076] [2019-10-22 11:22:44,601 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:22:44,601 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-10-22 11:22:44,601 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057452111] [2019-10-22 11:22:44,601 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:22:44,602 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:22:44,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:22:44,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:22:44,602 INFO L87 Difference]: Start difference. First operand 335 states and 438 transitions. Second operand 3 states. [2019-10-22 11:22:44,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:22:44,623 INFO L93 Difference]: Finished difference Result 335 states and 438 transitions. [2019-10-22 11:22:44,624 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:22:44,624 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 40 [2019-10-22 11:22:44,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:22:44,625 INFO L225 Difference]: With dead ends: 335 [2019-10-22 11:22:44,625 INFO L226 Difference]: Without dead ends: 177 [2019-10-22 11:22:44,626 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:22:44,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2019-10-22 11:22:44,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2019-10-22 11:22:44,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2019-10-22 11:22:44,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 240 transitions. [2019-10-22 11:22:44,644 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 240 transitions. Word has length 40 [2019-10-22 11:22:44,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:22:44,644 INFO L462 AbstractCegarLoop]: Abstraction has 177 states and 240 transitions. [2019-10-22 11:22:44,645 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:22:44,645 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 240 transitions. [2019-10-22 11:22:44,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-10-22 11:22:44,645 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:22:44,646 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:22:44,846 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:22:44,847 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:22:44,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:22:44,847 INFO L82 PathProgramCache]: Analyzing trace with hash -792985208, now seen corresponding path program 1 times [2019-10-22 11:22:44,847 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:22:44,847 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1600352987] [2019-10-22 11:22:44,848 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8b6cd3cb-2719-437e-9948-18a02c2e8046/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 11:22:44,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:22:44,977 INFO L256 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-22 11:22:44,979 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:22:44,997 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-22 11:22:44,997 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:22:45,002 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-10-22 11:22:45,003 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1600352987] [2019-10-22 11:22:45,003 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:22:45,003 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2019-10-22 11:22:45,004 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577100024] [2019-10-22 11:22:45,004 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-22 11:22:45,006 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:22:45,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-22 11:22:45,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-22 11:22:45,007 INFO L87 Difference]: Start difference. First operand 177 states and 240 transitions. Second operand 5 states. [2019-10-22 11:22:45,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:22:45,178 INFO L93 Difference]: Finished difference Result 431 states and 593 transitions. [2019-10-22 11:22:45,178 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-22 11:22:45,178 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 40 [2019-10-22 11:22:45,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:22:45,180 INFO L225 Difference]: With dead ends: 431 [2019-10-22 11:22:45,180 INFO L226 Difference]: Without dead ends: 429 [2019-10-22 11:22:45,181 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 78 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 11:22:45,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2019-10-22 11:22:45,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 177. [2019-10-22 11:22:45,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2019-10-22 11:22:45,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 238 transitions. [2019-10-22 11:22:45,202 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 238 transitions. Word has length 40 [2019-10-22 11:22:45,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:22:45,203 INFO L462 AbstractCegarLoop]: Abstraction has 177 states and 238 transitions. [2019-10-22 11:22:45,203 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-22 11:22:45,203 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 238 transitions. [2019-10-22 11:22:45,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-10-22 11:22:45,204 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:22:45,204 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:22:45,405 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:22:45,407 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:22:45,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:22:45,407 INFO L82 PathProgramCache]: Analyzing trace with hash 1942803224, now seen corresponding path program 1 times [2019-10-22 11:22:45,407 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:22:45,408 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [503141206] [2019-10-22 11:22:45,408 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8b6cd3cb-2719-437e-9948-18a02c2e8046/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 11:22:45,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:22:45,568 INFO L256 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-22 11:22:45,569 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:22:45,595 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 11:22:45,595 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:22:45,630 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 11:22:45,630 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [503141206] [2019-10-22 11:22:45,630 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [624313625] [2019-10-22 11:22:45,630 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8b6cd3cb-2719-437e-9948-18a02c2e8046/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 11:22:45,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:22:45,740 INFO L256 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-22 11:22:45,742 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:22:45,748 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 11:22:45,748 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:22:45,754 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 11:22:45,755 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-22 11:22:45,755 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5] total 9 [2019-10-22 11:22:45,755 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461253226] [2019-10-22 11:22:45,756 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-22 11:22:45,756 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:22:45,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-22 11:22:45,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-10-22 11:22:45,756 INFO L87 Difference]: Start difference. First operand 177 states and 238 transitions. Second operand 10 states. [2019-10-22 11:22:46,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:22:46,556 INFO L93 Difference]: Finished difference Result 1042 states and 1455 transitions. [2019-10-22 11:22:46,557 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2019-10-22 11:22:46,557 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 45 [2019-10-22 11:22:46,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:22:46,560 INFO L225 Difference]: With dead ends: 1042 [2019-10-22 11:22:46,561 INFO L226 Difference]: Without dead ends: 912 [2019-10-22 11:22:46,562 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=198, Invalid=558, Unknown=0, NotChecked=0, Total=756 [2019-10-22 11:22:46,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 912 states. [2019-10-22 11:22:46,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 912 to 294. [2019-10-22 11:22:46,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2019-10-22 11:22:46,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 402 transitions. [2019-10-22 11:22:46,598 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 402 transitions. Word has length 45 [2019-10-22 11:22:46,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:22:46,600 INFO L462 AbstractCegarLoop]: Abstraction has 294 states and 402 transitions. [2019-10-22 11:22:46,600 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-22 11:22:46,600 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 402 transitions. [2019-10-22 11:22:46,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-10-22 11:22:46,601 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:22:46,601 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:22:47,002 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 11:22:47,003 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:22:47,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:22:47,003 INFO L82 PathProgramCache]: Analyzing trace with hash 511998341, now seen corresponding path program 2 times [2019-10-22 11:22:47,004 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:22:47,004 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [497551413] [2019-10-22 11:22:47,004 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8b6cd3cb-2719-437e-9948-18a02c2e8046/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 11:22:48,701 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-10-22 11:22:48,702 INFO L250 tOrderPrioritization]: Conjunction of SSA is sat [2019-10-22 11:22:50,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 11:22:51,085 INFO L168 tionRefinementEngine]: Strategy WALRUS found a feasible trace [2019-10-22 11:22:51,086 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-22 11:22:51,286 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:22:51,395 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 11:22:51 BoogieIcfgContainer [2019-10-22 11:22:51,395 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 11:22:51,396 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 11:22:51,396 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 11:22:51,396 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 11:22:51,396 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:22:40" (3/4) ... [2019-10-22 11:22:51,398 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-10-22 11:22:51,521 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_8b6cd3cb-2719-437e-9948-18a02c2e8046/bin/utaipan/witness.graphml [2019-10-22 11:22:51,521 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 11:22:51,523 INFO L168 Benchmark]: Toolchain (without parser) took 12424.94 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 281.5 MB). Free memory was 946.9 MB in the beginning and 1.1 GB in the end (delta: -175.2 MB). Peak memory consumption was 106.4 MB. Max. memory is 11.5 GB. [2019-10-22 11:22:51,524 INFO L168 Benchmark]: CDTParser took 0.17 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 11:22:51,524 INFO L168 Benchmark]: CACSL2BoogieTranslator took 606.83 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 163.6 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -202.6 MB). Peak memory consumption was 24.8 MB. Max. memory is 11.5 GB. [2019-10-22 11:22:51,524 INFO L168 Benchmark]: Boogie Procedure Inliner took 72.96 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 11:22:51,524 INFO L168 Benchmark]: Boogie Preprocessor took 47.76 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 11:22:51,524 INFO L168 Benchmark]: RCFGBuilder took 862.65 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: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 11.5 GB. [2019-10-22 11:22:51,525 INFO L168 Benchmark]: TraceAbstraction took 10704.57 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 118.0 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -72.6 MB). Peak memory consumption was 45.3 MB. Max. memory is 11.5 GB. [2019-10-22 11:22:51,525 INFO L168 Benchmark]: Witness Printer took 125.71 ms. Allocated memory is still 1.3 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 24.8 MB). Peak memory consumption was 24.8 MB. Max. memory is 11.5 GB. [2019-10-22 11:22:51,526 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 972.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 606.83 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 163.6 MB). Free memory was 941.6 MB in the beginning and 1.1 GB in the end (delta: -202.6 MB). Peak memory consumption was 24.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 72.96 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 47.76 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. * RCFGBuilder took 862.65 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: 63.4 MB). Peak memory consumption was 63.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 10704.57 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 118.0 MB). Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: -72.6 MB). Peak memory consumption was 45.3 MB. Max. memory is 11.5 GB. * Witness Printer took 125.71 ms. Allocated memory is still 1.3 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 24.8 MB). Peak memory consumption was 24.8 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 784]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L148] int pumpRunning = 0; [L149] int systemActive = 1; [L315] int cleanupTimeShifts = 4; [L583] static struct __ACC__ERR *head = (struct __ACC__ERR *)0; [L824] int waterLevel = 1; [L825] int methaneLevelCritical = 0; [L391] int retValue_acc ; [L392] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L815] int retValue_acc ; [L818] retValue_acc = 1 [L819] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L398] tmp = valid_product() [L400] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L46] int splverifierCounter ; [L47] int tmp ; [L48] int tmp___0 ; [L49] int tmp___1 ; [L50] int tmp___2 ; [L53] splverifierCounter = 0 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L55] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L57] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L63] tmp = __VERIFIER_nondet_int() [L65] COND TRUE \read(tmp) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=1] [L842] COND TRUE waterLevel < 2 [L843] waterLevel = waterLevel + 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L73] tmp___0 = __VERIFIER_nondet_int() [L75] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L83] tmp___2 = __VERIFIER_nondet_int() [L85] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L155] COND FALSE !(\read(pumpRunning)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L162] COND TRUE \read(systemActive) [L184] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L187] COND TRUE ! pumpRunning [L281] int retValue_acc ; [L282] int tmp ; [L283] int tmp___0 ; [L904] int retValue_acc ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L907] COND FALSE !(waterLevel < 2) [L911] retValue_acc = 0 [L912] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L287] tmp = isHighWaterSensorDry() [L289] COND FALSE !(\read(tmp)) [L292] tmp___0 = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L294] retValue_acc = tmp___0 [L295] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=0, systemActive=1, waterLevel=2] [L189] tmp = isHighWaterLevel() [L191] COND TRUE \read(tmp) [L212] pumpRunning = 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L116] int tmp ; [L117] int tmp___0 ; [L895] int retValue_acc ; [L898] retValue_acc = waterLevel [L899] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L121] tmp = getWaterLevel() [L123] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L55] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L57] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L63] tmp = __VERIFIER_nondet_int() [L65] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L73] tmp___0 = __VERIFIER_nondet_int() [L75] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L83] tmp___2 = __VERIFIER_nondet_int() [L85] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L155] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=2] [L830] COND TRUE waterLevel > 0 [L831] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L162] COND TRUE \read(systemActive) [L184] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L187] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L116] int tmp ; [L117] int tmp___0 ; [L895] int retValue_acc ; [L898] retValue_acc = waterLevel [L899] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L121] tmp = getWaterLevel() [L123] COND FALSE !(tmp == 0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L55] COND TRUE 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L57] COND TRUE splverifierCounter < 4 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L63] tmp = __VERIFIER_nondet_int() [L65] COND FALSE !(\read(tmp)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L73] tmp___0 = __VERIFIER_nondet_int() [L75] COND FALSE !(\read(tmp___0)) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L83] tmp___2 = __VERIFIER_nondet_int() [L85] COND TRUE \read(tmp___2) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L155] COND TRUE \read(pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=1] [L830] COND TRUE waterLevel > 0 [L831] waterLevel = waterLevel - 1 VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L162] COND TRUE \read(systemActive) [L184] int tmp ; VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L187] COND FALSE !(! pumpRunning) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L116] int tmp ; [L117] int tmp___0 ; [L895] int retValue_acc ; [L898] retValue_acc = waterLevel [L899] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L121] tmp = getWaterLevel() [L123] COND TRUE tmp == 0 [L236] int retValue_acc ; [L239] retValue_acc = pumpRunning [L240] return (retValue_acc); VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L125] tmp___0 = isPumpRunning() [L127] COND TRUE \read(tmp___0) VAL [cleanupTimeShifts=4, head={0:0}, methaneLevelCritical=0, pumpRunning=1, systemActive=1, waterLevel=0] [L784] __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, 80 locations, 3 error locations. Result: UNSAFE, OverallTime: 10.6s, OverallIterations: 10, TraceHistogramMax: 3, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 1055 SDtfs, 2555 SDslu, 2733 SDs, 0 SdLazy, 488 SolverSat, 157 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 627 GetRequests, 566 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=426occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 1855 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 2.2s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 364 NumberOfCodeBlocks, 364 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 588 ConstructedInterpolants, 0 QuantifiedInterpolants, 49626 SizeOfPredicates, 24 NumberOfNonLiveVariables, 1938 ConjunctsInSsa, 42 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...