./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-regression/stateful_check.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_de8f8608-ea77-485b-b2ff-3cfd13b6601c/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_de8f8608-ea77-485b-b2ff-3cfd13b6601c/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_de8f8608-ea77-485b-b2ff-3cfd13b6601c/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_de8f8608-ea77-485b-b2ff-3cfd13b6601c/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-regression/stateful_check.c -s /tmp/vcloud-vcloud-master/worker/working_dir_de8f8608-ea77-485b-b2ff-3cfd13b6601c/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_de8f8608-ea77-485b-b2ff-3cfd13b6601c/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 1225f82562543767c482452e9133e4a69d5dae70 ............................................................................................................................................................................................................................................................................................................................................................................................................................................. 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_de8f8608-ea77-485b-b2ff-3cfd13b6601c/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_de8f8608-ea77-485b-b2ff-3cfd13b6601c/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_de8f8608-ea77-485b-b2ff-3cfd13b6601c/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_de8f8608-ea77-485b-b2ff-3cfd13b6601c/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-regression/stateful_check.c -s /tmp/vcloud-vcloud-master/worker/working_dir_de8f8608-ea77-485b-b2ff-3cfd13b6601c/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_de8f8608-ea77-485b-b2ff-3cfd13b6601c/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 1225f82562543767c482452e9133e4a69d5dae70 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 11:21:20,674 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:21:20,679 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:21:20,690 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:21:20,690 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:21:20,691 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:21:20,692 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:21:20,694 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:21:20,696 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:21:20,697 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:21:20,698 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:21:20,699 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:21:20,699 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:21:20,700 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:21:20,701 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:21:20,702 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:21:20,703 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:21:20,704 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:21:20,706 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:21:20,707 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:21:20,709 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:21:20,710 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:21:20,711 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:21:20,712 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:21:20,714 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:21:20,714 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:21:20,715 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:21:20,715 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:21:20,716 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:21:20,717 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:21:20,717 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:21:20,718 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:21:20,719 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:21:20,720 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:21:20,721 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:21:20,721 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:21:20,722 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:21:20,722 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:21:20,722 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:21:20,723 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:21:20,724 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:21:20,724 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_de8f8608-ea77-485b-b2ff-3cfd13b6601c/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-10-22 11:21:20,737 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:21:20,738 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:21:20,738 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:21:20,739 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:21:20,739 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:21:20,739 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:21:20,739 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-10-22 11:21:20,740 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:21:20,740 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:21:20,740 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-10-22 11:21:20,741 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-10-22 11:21:20,741 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:21:20,741 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:21:20,742 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:21:20,742 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 11:21:20,742 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:21:20,742 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:21:20,743 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:21:20,743 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:21:20,743 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:21:20,743 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:21:20,743 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:21:20,744 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:21:20,744 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:21:20,745 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:21:20,748 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:21:20,748 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:21:20,749 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:21:20,749 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:21:20,749 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:21:20,749 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:21:20,749 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-22 11:21:20,750 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 11:21:20,750 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:21:20,750 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:21:20,750 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_de8f8608-ea77-485b-b2ff-3cfd13b6601c/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 -> 1225f82562543767c482452e9133e4a69d5dae70 [2019-10-22 11:21:20,779 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:21:20,793 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:21:20,797 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:21:20,808 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:21:20,808 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:21:20,809 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_de8f8608-ea77-485b-b2ff-3cfd13b6601c/bin/utaipan/../../sv-benchmarks/c/ldv-regression/stateful_check.c [2019-10-22 11:21:20,866 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_de8f8608-ea77-485b-b2ff-3cfd13b6601c/bin/utaipan/data/4c88df9ef/d8b7c0f8bc4c4adcbeac267e6a52e759/FLAG698e3a12a [2019-10-22 11:21:21,253 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:21:21,254 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_de8f8608-ea77-485b-b2ff-3cfd13b6601c/sv-benchmarks/c/ldv-regression/stateful_check.c [2019-10-22 11:21:21,261 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_de8f8608-ea77-485b-b2ff-3cfd13b6601c/bin/utaipan/data/4c88df9ef/d8b7c0f8bc4c4adcbeac267e6a52e759/FLAG698e3a12a [2019-10-22 11:21:21,272 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_de8f8608-ea77-485b-b2ff-3cfd13b6601c/bin/utaipan/data/4c88df9ef/d8b7c0f8bc4c4adcbeac267e6a52e759 [2019-10-22 11:21:21,275 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:21:21,277 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:21:21,279 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:21:21,279 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:21:21,282 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:21:21,283 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:21:21" (1/1) ... [2019-10-22 11:21:21,285 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@756979c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:21, skipping insertion in model container [2019-10-22 11:21:21,285 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:21:21" (1/1) ... [2019-10-22 11:21:21,293 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:21:21,312 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:21:21,519 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:21:21,524 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:21:21,543 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:21:21,555 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:21:21,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:21 WrapperNode [2019-10-22 11:21:21,556 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:21:21,557 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:21:21,557 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:21:21,557 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:21:21,566 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:21" (1/1) ... [2019-10-22 11:21:21,575 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:21" (1/1) ... [2019-10-22 11:21:21,596 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:21:21,597 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:21:21,597 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:21:21,598 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:21:21,605 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:21" (1/1) ... [2019-10-22 11:21:21,605 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:21" (1/1) ... [2019-10-22 11:21:21,606 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:21" (1/1) ... [2019-10-22 11:21:21,607 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:21" (1/1) ... [2019-10-22 11:21:21,610 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:21" (1/1) ... [2019-10-22 11:21:21,615 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:21" (1/1) ... [2019-10-22 11:21:21,616 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:21" (1/1) ... [2019-10-22 11:21:21,618 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:21:21,620 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:21:21,620 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:21:21,620 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:21:21,621 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:21" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_de8f8608-ea77-485b-b2ff-3cfd13b6601c/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:21:21,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:21:21,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:21:22,046 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:21:22,047 INFO L284 CfgBuilder]: Removed 35 assume(true) statements. [2019-10-22 11:21:22,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:21:22 BoogieIcfgContainer [2019-10-22 11:21:22,048 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:21:22,049 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:21:22,049 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:21:22,052 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:21:22,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:21:21" (1/3) ... [2019-10-22 11:21:22,054 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2526b0d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:21:22, skipping insertion in model container [2019-10-22 11:21:22,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:21" (2/3) ... [2019-10-22 11:21:22,054 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2526b0d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:21:22, skipping insertion in model container [2019-10-22 11:21:22,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:21:22" (3/3) ... [2019-10-22 11:21:22,056 INFO L109 eAbstractionObserver]: Analyzing ICFG stateful_check.c [2019-10-22 11:21:22,067 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:21:22,075 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2019-10-22 11:21:22,087 INFO L249 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2019-10-22 11:21:22,121 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:21:22,122 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:21:22,122 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:21:22,122 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:21:22,123 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:21:22,123 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:21:22,123 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:21:22,123 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:21:22,140 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2019-10-22 11:21:22,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-10-22 11:21:22,146 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:21:22,147 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-10-22 11:21:22,150 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:21:22,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:21:22,156 INFO L82 PathProgramCache]: Analyzing trace with hash 889605129, now seen corresponding path program 1 times [2019-10-22 11:21:22,166 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:21:22,166 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868027631] [2019-10-22 11:21:22,167 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:22,167 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:22,167 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:21:22,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:21:22,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:21:22,297 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868027631] [2019-10-22 11:21:22,297 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:21:22,299 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 11:21:22,299 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113224745] [2019-10-22 11:21:22,304 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-22 11:21:22,306 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:21:22,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-22 11:21:22,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 11:21:22,325 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 2 states. [2019-10-22 11:21:22,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:21:22,352 INFO L93 Difference]: Finished difference Result 89 states and 123 transitions. [2019-10-22 11:21:22,353 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 11:21:22,354 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2019-10-22 11:21:22,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:21:22,367 INFO L225 Difference]: With dead ends: 89 [2019-10-22 11:21:22,368 INFO L226 Difference]: Without dead ends: 42 [2019-10-22 11:21:22,372 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 11:21:22,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-10-22 11:21:22,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2019-10-22 11:21:22,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-10-22 11:21:22,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 53 transitions. [2019-10-22 11:21:22,417 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 53 transitions. Word has length 6 [2019-10-22 11:21:22,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:21:22,418 INFO L462 AbstractCegarLoop]: Abstraction has 42 states and 53 transitions. [2019-10-22 11:21:22,418 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-22 11:21:22,418 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 53 transitions. [2019-10-22 11:21:22,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-10-22 11:21:22,418 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:21:22,418 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:21:22,419 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:21:22,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:21:22,419 INFO L82 PathProgramCache]: Analyzing trace with hash 1804046918, now seen corresponding path program 1 times [2019-10-22 11:21:22,419 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:21:22,419 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [22569766] [2019-10-22 11:21:22,419 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:22,420 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:22,420 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:21:22,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:21:22,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:21:22,478 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [22569766] [2019-10-22 11:21:22,479 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:21:22,479 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 11:21:22,479 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222701614] [2019-10-22 11:21:22,480 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:21:22,481 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:21:22,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:21:22,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:21:22,481 INFO L87 Difference]: Start difference. First operand 42 states and 53 transitions. Second operand 3 states. [2019-10-22 11:21:22,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:21:22,552 INFO L93 Difference]: Finished difference Result 70 states and 92 transitions. [2019-10-22 11:21:22,553 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:21:22,553 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2019-10-22 11:21:22,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:21:22,554 INFO L225 Difference]: With dead ends: 70 [2019-10-22 11:21:22,555 INFO L226 Difference]: Without dead ends: 63 [2019-10-22 11:21:22,555 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:21:22,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2019-10-22 11:21:22,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2019-10-22 11:21:22,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2019-10-22 11:21:22,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 85 transitions. [2019-10-22 11:21:22,565 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 85 transitions. Word has length 7 [2019-10-22 11:21:22,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:21:22,565 INFO L462 AbstractCegarLoop]: Abstraction has 63 states and 85 transitions. [2019-10-22 11:21:22,565 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:21:22,565 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 85 transitions. [2019-10-22 11:21:22,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-10-22 11:21:22,566 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:21:22,567 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:21:22,567 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:21:22,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:21:22,568 INFO L82 PathProgramCache]: Analyzing trace with hash -147365405, now seen corresponding path program 1 times [2019-10-22 11:21:22,568 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:21:22,568 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608075246] [2019-10-22 11:21:22,568 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:22,569 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:22,569 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:21:22,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:21:22,606 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 11:21:22,606 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608075246] [2019-10-22 11:21:22,607 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:21:22,607 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 11:21:22,607 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358492218] [2019-10-22 11:21:22,607 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:21:22,608 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:21:22,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:21:22,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:21:22,608 INFO L87 Difference]: Start difference. First operand 63 states and 85 transitions. Second operand 3 states. [2019-10-22 11:21:22,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:21:22,659 INFO L93 Difference]: Finished difference Result 150 states and 212 transitions. [2019-10-22 11:21:22,659 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:21:22,660 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2019-10-22 11:21:22,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:21:22,661 INFO L225 Difference]: With dead ends: 150 [2019-10-22 11:21:22,661 INFO L226 Difference]: Without dead ends: 90 [2019-10-22 11:21:22,662 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:21:22,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2019-10-22 11:21:22,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 87. [2019-10-22 11:21:22,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2019-10-22 11:21:22,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 122 transitions. [2019-10-22 11:21:22,673 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 122 transitions. Word has length 15 [2019-10-22 11:21:22,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:21:22,673 INFO L462 AbstractCegarLoop]: Abstraction has 87 states and 122 transitions. [2019-10-22 11:21:22,674 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:21:22,674 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 122 transitions. [2019-10-22 11:21:22,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-10-22 11:21:22,674 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:21:22,675 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:21:22,675 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:21:22,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:21:22,675 INFO L82 PathProgramCache]: Analyzing trace with hash 1293798555, now seen corresponding path program 1 times [2019-10-22 11:21:22,675 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:21:22,676 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462863763] [2019-10-22 11:21:22,676 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:22,676 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:22,676 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:21:22,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:21:22,729 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-22 11:21:22,730 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462863763] [2019-10-22 11:21:22,730 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:21:22,730 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 11:21:22,730 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [957337459] [2019-10-22 11:21:22,731 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:21:22,731 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:21:22,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:21:22,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:21:22,731 INFO L87 Difference]: Start difference. First operand 87 states and 122 transitions. Second operand 3 states. [2019-10-22 11:21:22,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:21:22,759 INFO L93 Difference]: Finished difference Result 208 states and 300 transitions. [2019-10-22 11:21:22,760 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:21:22,760 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2019-10-22 11:21:22,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:21:22,761 INFO L225 Difference]: With dead ends: 208 [2019-10-22 11:21:22,761 INFO L226 Difference]: Without dead ends: 124 [2019-10-22 11:21:22,762 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:21:22,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2019-10-22 11:21:22,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 121. [2019-10-22 11:21:22,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2019-10-22 11:21:22,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 177 transitions. [2019-10-22 11:21:22,787 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 177 transitions. Word has length 22 [2019-10-22 11:21:22,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:21:22,788 INFO L462 AbstractCegarLoop]: Abstraction has 121 states and 177 transitions. [2019-10-22 11:21:22,788 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:21:22,788 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 177 transitions. [2019-10-22 11:21:22,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2019-10-22 11:21:22,789 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:21:22,789 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:21:22,790 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:21:22,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:21:22,790 INFO L82 PathProgramCache]: Analyzing trace with hash 1319564790, now seen corresponding path program 1 times [2019-10-22 11:21:22,790 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:21:22,790 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20270712] [2019-10-22 11:21:22,791 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:22,791 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:21:22,791 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:21:22,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:21:22,843 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:21:22,844 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20270712] [2019-10-22 11:21:22,844 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2051392505] [2019-10-22 11:21:22,844 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_de8f8608-ea77-485b-b2ff-3cfd13b6601c/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:21:22,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:21:22,888 INFO L256 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-22 11:21:22,893 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:21:22,911 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:21:22,912 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:21:22,933 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:21:22,934 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [996089943] [2019-10-22 11:21:22,940 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 23 [2019-10-22 11:21:22,979 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2019-10-22 11:21:22,979 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-22 11:21:23,313 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:21:23,313 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: inappropriate decl info IMPLEMENTATION at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Boogie2SmtSymbolTable.getBoogieVar(Boogie2SmtSymbolTable.java:222) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.getBoogieVar(NonrelationalStatementProcessor.java:348) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.handleHavocStatement(NonrelationalStatementProcessor.java:325) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.processStatement(NonrelationalStatementProcessor.java:159) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.process(NonrelationalStatementProcessor.java:138) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.process(NonrelationalStatementProcessor.java:107) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.handleInternalTransition(NonrelationalPostOperator.java:422) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.handleInternalTransition(NonrelationalPostOperator.java:413) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.apply(NonrelationalPostOperator.java:140) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.apply(NonrelationalPostOperator.java:1) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.compound.CompoundDomainPostOperator.applyInternally(CompoundDomainPostOperator.java:306) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.compound.CompoundDomainPostOperator.apply(CompoundDomainPostOperator.java:131) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.compound.CompoundDomainPostOperator.apply(CompoundDomainPostOperator.java:1) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormanCachedPostOperation.restoreOriginalStateVariables(PoormanCachedPostOperation.java:322) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormansAbstractPostOperator.applyPost(PoormansAbstractPostOperator.java:217) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormansAbstractPostOperator.apply(PoormansAbstractPostOperator.java:120) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormansAbstractPostOperator.apply(PoormansAbstractPostOperator.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.absint.DisjunctiveAbstractState.lambda$17(DisjunctiveAbstractState.java:323) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.absint.DisjunctiveAbstractState.mapCollection(DisjunctiveAbstractState.java:519) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.absint.DisjunctiveAbstractState.apply(DisjunctiveAbstractState.java:323) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.algorithm.FixpointEngine.calculateAbstractPost(FixpointEngine.java:249) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.algorithm.FixpointEngine.calculateFixpoint(FixpointEngine.java:134) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.algorithm.FixpointEngine.run(FixpointEngine.java:105) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.tool.AbstractInterpreter.runWithoutTimeoutAndResults(AbstractInterpreter.java:149) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarAbsIntRunner.generateFixpoints(CegarAbsIntRunner.java:227) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarAbsIntRunner.(CegarAbsIntRunner.java:158) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleAbstractInterpretation.getOrConstructRunner(IpTcStrategyModuleAbstractInterpretation.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleAbstractInterpretation.construct(IpTcStrategyModuleAbstractInterpretation.java:81) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:299) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.generateProof(TraceAbstractionRefinementEngine.java:184) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-10-22 11:21:23,324 INFO L168 Benchmark]: Toolchain (without parser) took 2042.45 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 150.5 MB). Free memory was 944.5 MB in the beginning and 1.0 GB in the end (delta: -97.5 MB). Peak memory consumption was 52.9 MB. Max. memory is 11.5 GB. [2019-10-22 11:21:23,325 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:21:23,326 INFO L168 Benchmark]: CACSL2BoogieTranslator took 278.05 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 150.5 MB). Free memory was 944.5 MB in the beginning and 1.1 GB in the end (delta: -196.9 MB). Peak memory consumption was 22.6 MB. Max. memory is 11.5 GB. [2019-10-22 11:21:23,326 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.04 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:21:23,326 INFO L168 Benchmark]: Boogie Preprocessor took 22.14 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:21:23,327 INFO L168 Benchmark]: RCFGBuilder took 428.48 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 30.9 MB). Peak memory consumption was 30.9 MB. Max. memory is 11.5 GB. [2019-10-22 11:21:23,327 INFO L168 Benchmark]: TraceAbstraction took 1268.52 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 68.5 MB). Peak memory consumption was 68.5 MB. Max. memory is 11.5 GB. [2019-10-22 11:21:23,336 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 1.0 GB. Free memory is still 967.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 278.05 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 150.5 MB). Free memory was 944.5 MB in the beginning and 1.1 GB in the end (delta: -196.9 MB). Peak memory consumption was 22.6 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 40.04 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 22.14 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 428.48 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 30.9 MB). Peak memory consumption was 30.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1268.52 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 68.5 MB). Peak memory consumption was 68.5 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: inappropriate decl info IMPLEMENTATION de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: inappropriate decl info IMPLEMENTATION: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Boogie2SmtSymbolTable.getBoogieVar(Boogie2SmtSymbolTable.java:222) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-cad4683 [2019-10-22 11:21:25,601 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:21:25,603 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:21:25,614 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:21:25,614 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:21:25,615 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:21:25,616 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:21:25,618 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:21:25,619 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:21:25,620 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:21:25,621 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:21:25,622 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:21:25,622 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:21:25,623 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:21:25,624 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:21:25,625 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:21:25,626 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:21:25,627 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:21:25,628 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:21:25,630 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:21:25,631 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:21:25,633 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:21:25,634 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:21:25,634 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:21:25,640 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:21:25,643 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:21:25,643 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:21:25,644 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:21:25,645 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:21:25,645 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:21:25,646 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:21:25,646 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:21:25,647 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:21:25,648 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:21:25,648 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:21:25,649 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:21:25,649 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:21:25,649 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:21:25,650 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:21:25,650 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:21:25,651 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:21:25,652 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_de8f8608-ea77-485b-b2ff-3cfd13b6601c/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2019-10-22 11:21:25,671 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:21:25,671 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:21:25,672 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:21:25,672 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:21:25,672 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:21:25,672 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:21:25,673 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:21:25,673 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:21:25,673 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:21:25,674 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:21:25,674 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:21:25,674 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:21:25,674 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:21:25,674 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:21:25,674 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:21:25,675 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:21:25,675 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-10-22 11:21:25,675 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-10-22 11:21:25,675 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:21:25,675 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:21:25,676 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 11:21:25,676 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:21:25,676 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:21:25,677 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:21:25,677 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:21:25,677 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:21:25,677 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:21:25,677 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:21:25,678 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:21:25,678 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:21:25,678 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-10-22 11:21:25,678 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-10-22 11:21:25,678 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:21:25,678 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:21:25,679 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_de8f8608-ea77-485b-b2ff-3cfd13b6601c/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 -> 1225f82562543767c482452e9133e4a69d5dae70 [2019-10-22 11:21:25,709 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:21:25,720 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:21:25,724 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:21:25,725 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:21:25,726 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:21:25,726 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_de8f8608-ea77-485b-b2ff-3cfd13b6601c/bin/utaipan/../../sv-benchmarks/c/ldv-regression/stateful_check.c [2019-10-22 11:21:25,778 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_de8f8608-ea77-485b-b2ff-3cfd13b6601c/bin/utaipan/data/c7df3aacb/d7566b212ad44ee1b0df271999d84be8/FLAGf28572e8f [2019-10-22 11:21:26,162 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:21:26,163 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_de8f8608-ea77-485b-b2ff-3cfd13b6601c/sv-benchmarks/c/ldv-regression/stateful_check.c [2019-10-22 11:21:26,169 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_de8f8608-ea77-485b-b2ff-3cfd13b6601c/bin/utaipan/data/c7df3aacb/d7566b212ad44ee1b0df271999d84be8/FLAGf28572e8f [2019-10-22 11:21:26,543 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_de8f8608-ea77-485b-b2ff-3cfd13b6601c/bin/utaipan/data/c7df3aacb/d7566b212ad44ee1b0df271999d84be8 [2019-10-22 11:21:26,546 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:21:26,547 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:21:26,548 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:21:26,549 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:21:26,552 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:21:26,553 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:21:26" (1/1) ... [2019-10-22 11:21:26,556 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74bb8142 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:26, skipping insertion in model container [2019-10-22 11:21:26,556 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:21:26" (1/1) ... [2019-10-22 11:21:26,563 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:21:26,582 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:21:26,780 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:21:26,785 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:21:26,804 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:21:26,819 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:21:26,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:26 WrapperNode [2019-10-22 11:21:26,819 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:21:26,820 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:21:26,821 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:21:26,821 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:21:26,829 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:26" (1/1) ... [2019-10-22 11:21:26,835 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:26" (1/1) ... [2019-10-22 11:21:26,914 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:21:26,914 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:21:26,915 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:21:26,915 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:21:26,922 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:26" (1/1) ... [2019-10-22 11:21:26,922 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:26" (1/1) ... [2019-10-22 11:21:26,924 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:26" (1/1) ... [2019-10-22 11:21:26,924 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:26" (1/1) ... [2019-10-22 11:21:26,929 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:26" (1/1) ... [2019-10-22 11:21:26,934 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:26" (1/1) ... [2019-10-22 11:21:26,936 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:26" (1/1) ... [2019-10-22 11:21:26,938 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:21:26,938 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:21:26,939 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:21:26,939 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:21:26,940 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:26" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_de8f8608-ea77-485b-b2ff-3cfd13b6601c/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:21:26,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:21:26,985 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:21:27,226 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:21:27,227 INFO L284 CfgBuilder]: Removed 35 assume(true) statements. [2019-10-22 11:21:27,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:21:27 BoogieIcfgContainer [2019-10-22 11:21:27,228 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:21:27,229 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:21:27,229 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:21:27,233 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:21:27,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:21:26" (1/3) ... [2019-10-22 11:21:27,234 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b70b86a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:21:27, skipping insertion in model container [2019-10-22 11:21:27,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:21:26" (2/3) ... [2019-10-22 11:21:27,234 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b70b86a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:21:27, skipping insertion in model container [2019-10-22 11:21:27,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:21:27" (3/3) ... [2019-10-22 11:21:27,244 INFO L109 eAbstractionObserver]: Analyzing ICFG stateful_check.c [2019-10-22 11:21:27,255 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:21:27,274 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2019-10-22 11:21:27,286 INFO L249 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2019-10-22 11:21:27,312 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:21:27,312 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:21:27,313 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:21:27,313 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:21:27,313 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:21:27,313 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:21:27,313 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:21:27,313 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:21:27,330 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2019-10-22 11:21:27,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-10-22 11:21:27,336 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:21:27,337 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-10-22 11:21:27,339 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:21:27,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:21:27,346 INFO L82 PathProgramCache]: Analyzing trace with hash 889604136, now seen corresponding path program 1 times [2019-10-22 11:21:27,357 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:21:27,357 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1254526329] [2019-10-22 11:21:27,358 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_de8f8608-ea77-485b-b2ff-3cfd13b6601c/bin/utaipan/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:21:27,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:21:27,427 INFO L256 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 1 conjunts are in the unsatisfiable core [2019-10-22 11:21:27,434 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:21:27,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:21:27,448 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:21:27,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:21:27,451 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1254526329] [2019-10-22 11:21:27,452 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:21:27,452 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-10-22 11:21:27,452 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725167876] [2019-10-22 11:21:27,456 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-22 11:21:27,456 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:21:27,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-22 11:21:27,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 11:21:27,473 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 2 states. [2019-10-22 11:21:27,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:21:27,498 INFO L93 Difference]: Finished difference Result 87 states and 121 transitions. [2019-10-22 11:21:27,498 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 11:21:27,499 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2019-10-22 11:21:27,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:21:27,513 INFO L225 Difference]: With dead ends: 87 [2019-10-22 11:21:27,513 INFO L226 Difference]: Without dead ends: 41 [2019-10-22 11:21:27,516 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 11:21:27,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2019-10-22 11:21:27,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2019-10-22 11:21:27,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2019-10-22 11:21:27,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 52 transitions. [2019-10-22 11:21:27,552 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 52 transitions. Word has length 6 [2019-10-22 11:21:27,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:21:27,553 INFO L462 AbstractCegarLoop]: Abstraction has 41 states and 52 transitions. [2019-10-22 11:21:27,553 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-22 11:21:27,553 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 52 transitions. [2019-10-22 11:21:27,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-10-22 11:21:27,553 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:21:27,553 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-10-22 11:21:27,754 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:21:27,755 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:21:27,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:21:27,755 INFO L82 PathProgramCache]: Analyzing trace with hash 889484972, now seen corresponding path program 1 times [2019-10-22 11:21:27,755 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:21:27,755 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1399099002] [2019-10-22 11:21:27,756 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_de8f8608-ea77-485b-b2ff-3cfd13b6601c/bin/utaipan/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:21:27,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:21:27,792 INFO L256 TraceCheckSpWp]: Trace formula consists of 11 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 11:21:27,793 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:21:27,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:21:27,809 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:21:27,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:21:27,811 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1399099002] [2019-10-22 11:21:27,812 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:21:27,812 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-10-22 11:21:27,812 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338967769] [2019-10-22 11:21:27,814 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:21:27,814 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:21:27,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:21:27,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:21:27,817 INFO L87 Difference]: Start difference. First operand 41 states and 52 transitions. Second operand 3 states. [2019-10-22 11:21:27,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:21:27,868 INFO L93 Difference]: Finished difference Result 68 states and 90 transitions. [2019-10-22 11:21:27,868 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:21:27,869 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2019-10-22 11:21:27,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:21:27,870 INFO L225 Difference]: With dead ends: 68 [2019-10-22 11:21:27,870 INFO L226 Difference]: Without dead ends: 61 [2019-10-22 11:21:27,871 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:21:27,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2019-10-22 11:21:27,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2019-10-22 11:21:27,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2019-10-22 11:21:27,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 83 transitions. [2019-10-22 11:21:27,884 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 83 transitions. Word has length 6 [2019-10-22 11:21:27,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:21:27,884 INFO L462 AbstractCegarLoop]: Abstraction has 61 states and 83 transitions. [2019-10-22 11:21:27,885 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:21:27,885 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 83 transitions. [2019-10-22 11:21:27,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-22 11:21:27,886 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:21:27,886 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:21:28,087 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:21:28,088 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:21:28,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:21:28,090 INFO L82 PathProgramCache]: Analyzing trace with hash -330715191, now seen corresponding path program 1 times [2019-10-22 11:21:28,090 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:21:28,091 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1586992714] [2019-10-22 11:21:28,091 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_de8f8608-ea77-485b-b2ff-3cfd13b6601c/bin/utaipan/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:21:28,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:21:28,161 INFO L256 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 11:21:28,163 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:21:28,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:21:28,172 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:21:28,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:21:28,175 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1586992714] [2019-10-22 11:21:28,176 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:21:28,179 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-10-22 11:21:28,179 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709010252] [2019-10-22 11:21:28,180 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:21:28,180 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:21:28,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:21:28,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:21:28,181 INFO L87 Difference]: Start difference. First operand 61 states and 83 transitions. Second operand 3 states. [2019-10-22 11:21:28,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:21:28,243 INFO L93 Difference]: Finished difference Result 154 states and 220 transitions. [2019-10-22 11:21:28,243 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:21:28,244 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2019-10-22 11:21:28,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:21:28,245 INFO L225 Difference]: With dead ends: 154 [2019-10-22 11:21:28,245 INFO L226 Difference]: Without dead ends: 96 [2019-10-22 11:21:28,246 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:21:28,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2019-10-22 11:21:28,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 93. [2019-10-22 11:21:28,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2019-10-22 11:21:28,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 136 transitions. [2019-10-22 11:21:28,269 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 136 transitions. Word has length 14 [2019-10-22 11:21:28,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:21:28,269 INFO L462 AbstractCegarLoop]: Abstraction has 93 states and 136 transitions. [2019-10-22 11:21:28,269 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:21:28,269 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 136 transitions. [2019-10-22 11:21:28,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-10-22 11:21:28,270 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:21:28,270 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:21:28,473 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:21:28,473 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:21:28,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:21:28,474 INFO L82 PathProgramCache]: Analyzing trace with hash -304948956, now seen corresponding path program 1 times [2019-10-22 11:21:28,474 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:21:28,474 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1461542417] [2019-10-22 11:21:28,475 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_de8f8608-ea77-485b-b2ff-3cfd13b6601c/bin/utaipan/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:21:28,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:21:28,516 INFO L256 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 11:21:28,517 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:21:28,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:21:28,525 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:21:28,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:21:28,536 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1461542417] [2019-10-22 11:21:28,536 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:21:28,536 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2019-10-22 11:21:28,537 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386316060] [2019-10-22 11:21:28,537 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 11:21:28,537 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:21:28,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 11:21:28,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-22 11:21:28,538 INFO L87 Difference]: Start difference. First operand 93 states and 136 transitions. Second operand 4 states. [2019-10-22 11:21:28,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:21:28,646 INFO L93 Difference]: Finished difference Result 255 states and 396 transitions. [2019-10-22 11:21:28,646 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 11:21:28,647 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2019-10-22 11:21:28,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:21:28,648 INFO L225 Difference]: With dead ends: 255 [2019-10-22 11:21:28,649 INFO L226 Difference]: Without dead ends: 165 [2019-10-22 11:21:28,649 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-22 11:21:28,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2019-10-22 11:21:28,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 159. [2019-10-22 11:21:28,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2019-10-22 11:21:28,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 247 transitions. [2019-10-22 11:21:28,673 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 247 transitions. Word has length 14 [2019-10-22 11:21:28,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:21:28,673 INFO L462 AbstractCegarLoop]: Abstraction has 159 states and 247 transitions. [2019-10-22 11:21:28,673 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 11:21:28,674 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 247 transitions. [2019-10-22 11:21:28,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-10-22 11:21:28,675 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:21:28,675 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:21:28,876 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:21:28,876 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:21:28,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:21:28,877 INFO L82 PathProgramCache]: Analyzing trace with hash 601587200, now seen corresponding path program 1 times [2019-10-22 11:21:28,877 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:21:28,877 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1706743926] [2019-10-22 11:21:28,878 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_de8f8608-ea77-485b-b2ff-3cfd13b6601c/bin/utaipan/cvc4 Starting monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:21:28,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:21:28,928 INFO L256 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-22 11:21:28,930 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:21:28,945 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-22 11:21:28,946 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:21:28,967 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-22 11:21:28,967 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1706743926] [2019-10-22 11:21:28,968 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:21:28,968 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-10-22 11:21:28,968 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474129103] [2019-10-22 11:21:28,969 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 11:21:28,969 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:21:28,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 11:21:28,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-22 11:21:28,970 INFO L87 Difference]: Start difference. First operand 159 states and 247 transitions. Second operand 6 states. [2019-10-22 11:21:29,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:21:29,094 INFO L93 Difference]: Finished difference Result 456 states and 735 transitions. [2019-10-22 11:21:29,094 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-22 11:21:29,095 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2019-10-22 11:21:29,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:21:29,097 INFO L225 Difference]: With dead ends: 456 [2019-10-22 11:21:29,097 INFO L226 Difference]: Without dead ends: 300 [2019-10-22 11:21:29,098 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-22 11:21:29,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2019-10-22 11:21:29,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 247. [2019-10-22 11:21:29,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2019-10-22 11:21:29,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 383 transitions. [2019-10-22 11:21:29,130 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 383 transitions. Word has length 26 [2019-10-22 11:21:29,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:21:29,131 INFO L462 AbstractCegarLoop]: Abstraction has 247 states and 383 transitions. [2019-10-22 11:21:29,131 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 11:21:29,131 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 383 transitions. [2019-10-22 11:21:29,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-10-22 11:21:29,133 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:21:29,133 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:21:29,333 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:21:29,334 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:21:29,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:21:29,334 INFO L82 PathProgramCache]: Analyzing trace with hash 288531657, now seen corresponding path program 1 times [2019-10-22 11:21:29,335 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:21:29,335 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [406032499] [2019-10-22 11:21:29,335 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_de8f8608-ea77-485b-b2ff-3cfd13b6601c/bin/utaipan/cvc4 Starting monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:21:29,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:21:29,394 INFO L256 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-22 11:21:29,396 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:21:29,428 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:21:29,429 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:21:29,450 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:21:29,451 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [406032499] [2019-10-22 11:21:29,451 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:21:29,451 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2019-10-22 11:21:29,451 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815225775] [2019-10-22 11:21:29,452 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-22 11:21:29,453 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:21:29,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-22 11:21:29,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-22 11:21:29,454 INFO L87 Difference]: Start difference. First operand 247 states and 383 transitions. Second operand 6 states. [2019-10-22 11:21:29,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:21:29,610 INFO L93 Difference]: Finished difference Result 635 states and 997 transitions. [2019-10-22 11:21:29,610 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-22 11:21:29,611 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2019-10-22 11:21:29,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:21:29,613 INFO L225 Difference]: With dead ends: 635 [2019-10-22 11:21:29,613 INFO L226 Difference]: Without dead ends: 391 [2019-10-22 11:21:29,614 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-22 11:21:29,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2019-10-22 11:21:29,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 335. [2019-10-22 11:21:29,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 335 states. [2019-10-22 11:21:29,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 335 states to 335 states and 515 transitions. [2019-10-22 11:21:29,667 INFO L78 Accepts]: Start accepts. Automaton has 335 states and 515 transitions. Word has length 27 [2019-10-22 11:21:29,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:21:29,667 INFO L462 AbstractCegarLoop]: Abstraction has 335 states and 515 transitions. [2019-10-22 11:21:29,668 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-22 11:21:29,668 INFO L276 IsEmpty]: Start isEmpty. Operand 335 states and 515 transitions. [2019-10-22 11:21:29,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-10-22 11:21:29,669 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:21:29,669 INFO L380 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:21:29,870 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:21:29,870 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:21:29,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:21:29,871 INFO L82 PathProgramCache]: Analyzing trace with hash -1352284676, now seen corresponding path program 1 times [2019-10-22 11:21:29,871 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:21:29,871 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1949661673] [2019-10-22 11:21:29,871 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_de8f8608-ea77-485b-b2ff-3cfd13b6601c/bin/utaipan/cvc4 Starting monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:21:29,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 11:21:29,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 11:21:30,030 INFO L168 tionRefinementEngine]: Strategy WALRUS found a feasible trace [2019-10-22 11:21:30,030 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-22 11:21:30,231 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:21:30,262 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 11:21:30 BoogieIcfgContainer [2019-10-22 11:21:30,262 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 11:21:30,262 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 11:21:30,262 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 11:21:30,263 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 11:21:30,263 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:21:27" (3/4) ... [2019-10-22 11:21:30,265 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-10-22 11:21:30,320 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_de8f8608-ea77-485b-b2ff-3cfd13b6601c/bin/utaipan/witness.graphml [2019-10-22 11:21:30,321 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 11:21:30,323 INFO L168 Benchmark]: Toolchain (without parser) took 3775.31 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 164.1 MB). Free memory was 951.0 MB in the beginning and 964.7 MB in the end (delta: -13.8 MB). Peak memory consumption was 150.3 MB. Max. memory is 11.5 GB. [2019-10-22 11:21:30,323 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 977.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:21:30,324 INFO L168 Benchmark]: CACSL2BoogieTranslator took 271.53 ms. Allocated memory is still 1.0 GB. Free memory was 951.0 MB in the beginning and 940.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-10-22 11:21:30,324 INFO L168 Benchmark]: Boogie Procedure Inliner took 93.78 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 164.1 MB). Free memory was 940.2 MB in the beginning and 1.2 GB in the end (delta: -219.7 MB). Peak memory consumption was 17.9 MB. Max. memory is 11.5 GB. [2019-10-22 11:21:30,325 INFO L168 Benchmark]: Boogie Preprocessor took 23.72 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: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2019-10-22 11:21:30,325 INFO L168 Benchmark]: RCFGBuilder took 289.71 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: 19.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 11.5 GB. [2019-10-22 11:21:30,326 INFO L168 Benchmark]: TraceAbstraction took 3032.71 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 971.3 MB in the end (delta: 162.2 MB). Peak memory consumption was 162.2 MB. Max. memory is 11.5 GB. [2019-10-22 11:21:30,326 INFO L168 Benchmark]: Witness Printer took 58.52 ms. Allocated memory is still 1.2 GB. Free memory was 971.3 MB in the beginning and 964.7 MB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2019-10-22 11:21:30,329 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 1.0 GB. Free memory is still 977.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 271.53 ms. Allocated memory is still 1.0 GB. Free memory was 951.0 MB in the beginning and 940.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 93.78 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 164.1 MB). Free memory was 940.2 MB in the beginning and 1.2 GB in the end (delta: -219.7 MB). Peak memory consumption was 17.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 23.72 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: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. * RCFGBuilder took 289.71 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: 19.9 MB). Peak memory consumption was 19.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 3032.71 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 971.3 MB in the end (delta: 162.2 MB). Peak memory consumption was 162.2 MB. Max. memory is 11.5 GB. * Witness Printer took 58.52 ms. Allocated memory is still 1.2 GB. Free memory was 971.3 MB in the beginning and 964.7 MB in the end (delta: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 4]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L9] int ldv_mutex = 1; [L11] int open_called = 0; VAL [ldv_mutex=1, open_called=0] [L74] int ldv_s_misc_fops_file_operations = 0; [L69] open_called = 0 [L70] return 0; VAL [ldv_mutex=1, open_called=0] [L76] COND TRUE __VERIFIER_nondet_int() [L80] case 0: VAL [ldv_mutex=1, open_called=0] [L81] COND TRUE ldv_s_misc_fops_file_operations==0 [L57] COND TRUE __VERIFIER_nondet_int() [L59] return 1; VAL [ldv_mutex=1, open_called=0] [L83] ldv_s_misc_fops_file_operations++ VAL [ldv_mutex=1, open_called=0] [L76] COND TRUE __VERIFIER_nondet_int() [L80] case 0: [L88] case 1: VAL [ldv_mutex=1, open_called=0] [L89] COND TRUE ldv_s_misc_fops_file_operations==1 [L52] return 0; VAL [ldv_mutex=1, open_called=0] [L91] ldv_s_misc_fops_file_operations++ VAL [ldv_mutex=1, open_called=0] [L76] COND TRUE __VERIFIER_nondet_int() [L80] case 0: [L88] case 1: [L96] case 2: VAL [ldv_mutex=1, open_called=0] [L97] COND TRUE ldv_s_misc_fops_file_operations==2 [L48] return 0; VAL [ldv_mutex=1, open_called=0] [L99] ldv_s_misc_fops_file_operations++ VAL [ldv_mutex=1, open_called=0] [L76] COND TRUE __VERIFIER_nondet_int() [L80] case 0: [L88] case 1: [L96] case 2: [L104] case 3: VAL [ldv_mutex=1, open_called=0] [L105] COND TRUE ldv_s_misc_fops_file_operations==3 [L34] COND FALSE !(\read(open_called)) VAL [ldv_mutex=1, open_called=0] [L16] (ldv_mutex == 1) ? 0 : __blast_assert() VAL [ldv_mutex=1, open_called=0] [L17] ldv_mutex = 2 VAL [ldv_mutex=2, open_called=0] [L16] (ldv_mutex == 1) ? 0 : __blast_assert() VAL [ldv_mutex=2, open_called=0] [L4] __VERIFIER_error() VAL [ldv_mutex=2, open_called=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 45 locations, 5 error locations. Result: UNSAFE, OverallTime: 2.9s, OverallIterations: 7, TraceHistogramMax: 4, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 313 SDtfs, 333 SDslu, 361 SDs, 0 SdLazy, 146 SolverSat, 48 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 178 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=335occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 6 MinimizatonAttempts, 118 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 126 NumberOfCodeBlocks, 126 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 174 ConstructedInterpolants, 0 QuantifiedInterpolants, 6761 SizeOfPredicates, 6 NumberOfNonLiveVariables, 150 ConjunctsInSsa, 13 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 34/34 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...