./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector-loops/diamond_2-1.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_0b00c3ef-8321-4918-8f39-4612c087658f/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_0b00c3ef-8321-4918-8f39-4612c087658f/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_0b00c3ef-8321-4918-8f39-4612c087658f/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_0b00c3ef-8321-4918-8f39-4612c087658f/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector-loops/diamond_2-1.c -s /tmp/vcloud-vcloud-master/worker/working_dir_0b00c3ef-8321-4918-8f39-4612c087658f/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_0b00c3ef-8321-4918-8f39-4612c087658f/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 7aeed2387a92d93d76a9218958b4bab5d23187f1 ....................................................................................................................................................................................................................................................................................................................................................................................................... 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_0b00c3ef-8321-4918-8f39-4612c087658f/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_0b00c3ef-8321-4918-8f39-4612c087658f/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_0b00c3ef-8321-4918-8f39-4612c087658f/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_0b00c3ef-8321-4918-8f39-4612c087658f/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/bitvector-loops/diamond_2-1.c -s /tmp/vcloud-vcloud-master/worker/working_dir_0b00c3ef-8321-4918-8f39-4612c087658f/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_0b00c3ef-8321-4918-8f39-4612c087658f/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 7aeed2387a92d93d76a9218958b4bab5d23187f1 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.24-cad4683 [2019-10-22 11:25:45,766 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:25:45,768 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:25:45,778 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:25:45,778 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:25:45,779 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:25:45,780 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:25:45,781 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:25:45,785 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:25:45,786 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:25:45,787 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:25:45,787 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:25:45,788 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:25:45,788 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:25:45,789 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:25:45,790 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:25:45,790 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:25:45,791 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:25:45,795 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:25:45,796 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:25:45,797 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:25:45,798 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:25:45,799 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:25:45,799 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:25:45,808 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:25:45,808 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:25:45,808 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:25:45,809 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:25:45,809 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:25:45,809 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:25:45,810 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:25:45,810 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:25:45,810 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:25:45,811 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:25:45,811 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:25:45,811 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:25:45,812 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:25:45,812 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:25:45,812 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:25:45,815 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:25:45,815 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:25:45,816 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_0b00c3ef-8321-4918-8f39-4612c087658f/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-10-22 11:25:45,827 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:25:45,827 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:25:45,828 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:25:45,828 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:25:45,828 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:25:45,828 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:25:45,828 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-10-22 11:25:45,828 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:25:45,829 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:25:45,829 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-10-22 11:25:45,829 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-10-22 11:25:45,829 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:25:45,829 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:25:45,830 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:25:45,830 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 11:25:45,830 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:25:45,830 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:25:45,830 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:25:45,830 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:25:45,830 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:25:45,831 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:25:45,831 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:25:45,831 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:25:45,831 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:25:45,831 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:25:45,831 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:25:45,831 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:25:45,832 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:25:45,832 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:25:45,832 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:25:45,832 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:25:45,832 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-22 11:25:45,832 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-22 11:25:45,833 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:25:45,833 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:25:45,833 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_0b00c3ef-8321-4918-8f39-4612c087658f/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 -> 7aeed2387a92d93d76a9218958b4bab5d23187f1 [2019-10-22 11:25:45,863 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:25:45,877 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:25:45,880 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:25:45,881 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:25:45,881 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:25:45,882 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_0b00c3ef-8321-4918-8f39-4612c087658f/bin/utaipan/../../sv-benchmarks/c/bitvector-loops/diamond_2-1.c [2019-10-22 11:25:45,924 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_0b00c3ef-8321-4918-8f39-4612c087658f/bin/utaipan/data/c70222cce/abec68702cf04086a7674573ea98d583/FLAG49b9037f8 [2019-10-22 11:25:46,299 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:25:46,299 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_0b00c3ef-8321-4918-8f39-4612c087658f/sv-benchmarks/c/bitvector-loops/diamond_2-1.c [2019-10-22 11:25:46,304 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_0b00c3ef-8321-4918-8f39-4612c087658f/bin/utaipan/data/c70222cce/abec68702cf04086a7674573ea98d583/FLAG49b9037f8 [2019-10-22 11:25:46,708 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_0b00c3ef-8321-4918-8f39-4612c087658f/bin/utaipan/data/c70222cce/abec68702cf04086a7674573ea98d583 [2019-10-22 11:25:46,710 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:25:46,711 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:25:46,712 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:25:46,713 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:25:46,716 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:25:46,718 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:25:46" (1/1) ... [2019-10-22 11:25:46,720 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f2d2514 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:46, skipping insertion in model container [2019-10-22 11:25:46,720 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:25:46" (1/1) ... [2019-10-22 11:25:46,727 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:25:46,742 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:25:46,881 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:25:46,888 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:25:46,963 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:25:46,973 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:25:46,974 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:46 WrapperNode [2019-10-22 11:25:46,974 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:25:46,975 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:25:46,975 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:25:46,975 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:25:46,981 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:46" (1/1) ... [2019-10-22 11:25:46,986 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:46" (1/1) ... [2019-10-22 11:25:47,010 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:25:47,011 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:25:47,011 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:25:47,011 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:25:47,020 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:46" (1/1) ... [2019-10-22 11:25:47,021 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:46" (1/1) ... [2019-10-22 11:25:47,022 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:46" (1/1) ... [2019-10-22 11:25:47,029 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:46" (1/1) ... [2019-10-22 11:25:47,032 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:46" (1/1) ... [2019-10-22 11:25:47,049 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:46" (1/1) ... [2019-10-22 11:25:47,050 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:46" (1/1) ... [2019-10-22 11:25:47,051 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:25:47,052 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:25:47,052 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:25:47,052 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:25:47,053 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:46" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0b00c3ef-8321-4918-8f39-4612c087658f/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:25:47,111 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:25:47,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:25:47,358 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:25:47,359 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-10-22 11:25:47,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:25:47 BoogieIcfgContainer [2019-10-22 11:25:47,360 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:25:47,361 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:25:47,361 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:25:47,364 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:25:47,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:25:46" (1/3) ... [2019-10-22 11:25:47,365 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d13626e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:25:47, skipping insertion in model container [2019-10-22 11:25:47,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:46" (2/3) ... [2019-10-22 11:25:47,366 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d13626e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:25:47, skipping insertion in model container [2019-10-22 11:25:47,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:25:47" (3/3) ... [2019-10-22 11:25:47,368 INFO L109 eAbstractionObserver]: Analyzing ICFG diamond_2-1.c [2019-10-22 11:25:47,377 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:25:47,384 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-22 11:25:47,395 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-22 11:25:47,416 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:25:47,416 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:25:47,416 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:25:47,416 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:25:47,416 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:25:47,417 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:25:47,417 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:25:47,417 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:25:47,430 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2019-10-22 11:25:47,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-10-22 11:25:47,436 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:47,437 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-10-22 11:25:47,439 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:25:47,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:47,445 INFO L82 PathProgramCache]: Analyzing trace with hash 31771204, now seen corresponding path program 1 times [2019-10-22 11:25:47,454 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:25:47,454 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45331138] [2019-10-22 11:25:47,455 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:47,455 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:47,455 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:25:47,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:47,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:25:47,554 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45331138] [2019-10-22 11:25:47,555 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:25:47,556 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 11:25:47,556 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684065727] [2019-10-22 11:25:47,561 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-22 11:25:47,562 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:25:47,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-22 11:25:47,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 11:25:47,580 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2019-10-22 11:25:47,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:25:47,599 INFO L93 Difference]: Finished difference Result 26 states and 38 transitions. [2019-10-22 11:25:47,599 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 11:25:47,600 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2019-10-22 11:25:47,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:25:47,608 INFO L225 Difference]: With dead ends: 26 [2019-10-22 11:25:47,609 INFO L226 Difference]: Without dead ends: 16 [2019-10-22 11:25:47,611 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 11:25:47,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-10-22 11:25:47,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-10-22 11:25:47,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-10-22 11:25:47,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 26 transitions. [2019-10-22 11:25:47,642 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 26 transitions. Word has length 5 [2019-10-22 11:25:47,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:25:47,642 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 26 transitions. [2019-10-22 11:25:47,643 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-22 11:25:47,643 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 26 transitions. [2019-10-22 11:25:47,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-10-22 11:25:47,643 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:47,643 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-10-22 11:25:47,643 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:25:47,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:47,644 INFO L82 PathProgramCache]: Analyzing trace with hash 29864580, now seen corresponding path program 1 times [2019-10-22 11:25:47,644 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:25:47,644 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634165442] [2019-10-22 11:25:47,645 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:47,645 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:47,645 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:25:47,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:47,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:25:47,769 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634165442] [2019-10-22 11:25:47,770 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:25:47,770 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-22 11:25:47,770 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615048137] [2019-10-22 11:25:47,771 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:25:47,772 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:25:47,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:25:47,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:25:47,780 INFO L87 Difference]: Start difference. First operand 16 states and 26 transitions. Second operand 3 states. [2019-10-22 11:25:47,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:25:47,897 INFO L93 Difference]: Finished difference Result 22 states and 33 transitions. [2019-10-22 11:25:47,897 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:25:47,897 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2019-10-22 11:25:47,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:25:47,899 INFO L225 Difference]: With dead ends: 22 [2019-10-22 11:25:47,900 INFO L226 Difference]: Without dead ends: 18 [2019-10-22 11:25:47,900 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:25:47,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2019-10-22 11:25:47,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2019-10-22 11:25:47,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-10-22 11:25:47,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 27 transitions. [2019-10-22 11:25:47,905 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 27 transitions. Word has length 5 [2019-10-22 11:25:47,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:25:47,905 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 27 transitions. [2019-10-22 11:25:47,905 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:25:47,905 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 27 transitions. [2019-10-22 11:25:47,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-22 11:25:47,906 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:47,906 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:25:47,906 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:25:47,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:47,907 INFO L82 PathProgramCache]: Analyzing trace with hash -1273519218, now seen corresponding path program 1 times [2019-10-22 11:25:47,907 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:25:47,907 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131212768] [2019-10-22 11:25:47,907 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:47,907 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:47,907 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:25:47,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:50,010 WARN L191 SmtUtils]: Spent 2.06 s on a formula simplification. DAG size of input: 27 DAG size of output: 12 [2019-10-22 11:25:50,012 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:25:50,012 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131212768] [2019-10-22 11:25:50,013 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:25:50,013 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-22 11:25:50,013 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980955917] [2019-10-22 11:25:50,013 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:25:50,014 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-22 11:25:50,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:25:50,014 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:25:50,014 INFO L87 Difference]: Start difference. First operand 17 states and 27 transitions. Second operand 3 states. [2019-10-22 11:25:50,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:25:50,136 INFO L93 Difference]: Finished difference Result 47 states and 77 transitions. [2019-10-22 11:25:50,137 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:25:50,137 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2019-10-22 11:25:50,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:25:50,138 INFO L225 Difference]: With dead ends: 47 [2019-10-22 11:25:50,138 INFO L226 Difference]: Without dead ends: 32 [2019-10-22 11:25:50,139 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:25:50,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-10-22 11:25:50,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 28. [2019-10-22 11:25:50,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-10-22 11:25:50,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 39 transitions. [2019-10-22 11:25:50,143 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 39 transitions. Word has length 16 [2019-10-22 11:25:50,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:25:50,143 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 39 transitions. [2019-10-22 11:25:50,143 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:25:50,143 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 39 transitions. [2019-10-22 11:25:50,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-22 11:25:50,144 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:50,144 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:25:50,145 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:25:50,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:50,145 INFO L82 PathProgramCache]: Analyzing trace with hash -1974583796, now seen corresponding path program 1 times [2019-10-22 11:25:50,145 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-22 11:25:50,145 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907481747] [2019-10-22 11:25:50,146 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:50,146 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 11:25:50,146 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 11:25:50,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:50,454 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:25:50,454 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907481747] [2019-10-22 11:25:50,454 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1682893453] [2019-10-22 11:25:50,454 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0b00c3ef-8321-4918-8f39-4612c087658f/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:25:50,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:50,505 INFO L256 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 23 conjunts are in the unsatisfiable core [2019-10-22 11:25:50,509 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:25:50,563 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:25:50,563 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:25:51,749 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:25:51,750 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [123607005] [2019-10-22 11:25:51,755 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 17 [2019-10-22 11:25:51,790 INFO L148 AbstractInterpreter]: Using domain PoormanAbstractDomain with backing domain CompoundDomain [CongruenceDomain, ExplicitValueDomain] [2019-10-22 11:25:51,791 INFO L101 FixpointEngine]: Starting fixpoint engine with domain PoormanAbstractDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-22 11:25:52,051 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:25:52,052 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: inappropriate decl info IMPLEMENTATION at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Boogie2SmtSymbolTable.getBoogieVar(Boogie2SmtSymbolTable.java:222) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.getBoogieVar(NonrelationalStatementProcessor.java:348) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.handleHavocStatement(NonrelationalStatementProcessor.java:325) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.processStatement(NonrelationalStatementProcessor.java:159) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.process(NonrelationalStatementProcessor.java:138) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalStatementProcessor.process(NonrelationalStatementProcessor.java:107) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.handleInternalTransition(NonrelationalPostOperator.java:422) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.handleInternalTransition(NonrelationalPostOperator.java:413) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.apply(NonrelationalPostOperator.java:140) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.nonrelational.NonrelationalPostOperator.apply(NonrelationalPostOperator.java:1) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.compound.CompoundDomainPostOperator.applyInternally(CompoundDomainPostOperator.java:306) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.compound.CompoundDomainPostOperator.apply(CompoundDomainPostOperator.java:131) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.compound.CompoundDomainPostOperator.apply(CompoundDomainPostOperator.java:1) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormanCachedPostOperation.restoreOriginalStateVariables(PoormanCachedPostOperation.java:322) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormansAbstractPostOperator.applyPost(PoormansAbstractPostOperator.java:217) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormansAbstractPostOperator.apply(PoormansAbstractPostOperator.java:120) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.domain.transformula.poorman.PoormansAbstractPostOperator.apply(PoormansAbstractPostOperator.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.absint.DisjunctiveAbstractState.lambda$17(DisjunctiveAbstractState.java:323) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.absint.DisjunctiveAbstractState.mapCollection(DisjunctiveAbstractState.java:519) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.absint.DisjunctiveAbstractState.apply(DisjunctiveAbstractState.java:323) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.algorithm.FixpointEngine.calculateAbstractPost(FixpointEngine.java:249) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.algorithm.FixpointEngine.calculateFixpoint(FixpointEngine.java:134) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.algorithm.FixpointEngine.run(FixpointEngine.java:105) at de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2.tool.AbstractInterpreter.runWithoutTimeoutAndResults(AbstractInterpreter.java:149) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarAbsIntRunner.generateFixpoints(CegarAbsIntRunner.java:227) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarAbsIntRunner.(CegarAbsIntRunner.java:158) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleAbstractInterpretation.getOrConstructRunner(IpTcStrategyModuleAbstractInterpretation.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleAbstractInterpretation.construct(IpTcStrategyModuleAbstractInterpretation.java:81) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:299) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.generateProof(TraceAbstractionRefinementEngine.java:184) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2019-10-22 11:25:52,056 INFO L168 Benchmark]: Toolchain (without parser) took 5344.44 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 944.5 MB in the beginning and 977.2 MB in the end (delta: -32.7 MB). Peak memory consumption was 107.8 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:52,056 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 962.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:25:52,057 INFO L168 Benchmark]: CACSL2BoogieTranslator took 261.77 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 944.5 MB in the beginning and 1.1 GB in the end (delta: -193.4 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:52,057 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.03 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:52,058 INFO L168 Benchmark]: Boogie Preprocessor took 40.66 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 11:25:52,058 INFO L168 Benchmark]: RCFGBuilder took 308.33 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: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:52,059 INFO L168 Benchmark]: TraceAbstraction took 4693.77 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 977.2 MB in the end (delta: 134.3 MB). Peak memory consumption was 134.3 MB. Max. memory is 11.5 GB. [2019-10-22 11:25:52,070 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 962.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 261.77 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 140.5 MB). Free memory was 944.5 MB in the beginning and 1.1 GB in the end (delta: -193.4 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 36.03 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 40.66 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 308.33 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: 23.7 MB). Peak memory consumption was 23.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 4693.77 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 977.2 MB in the end (delta: 134.3 MB). Peak memory consumption was 134.3 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: inappropriate decl info IMPLEMENTATION de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: inappropriate decl info IMPLEMENTATION: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Boogie2SmtSymbolTable.getBoogieVar(Boogie2SmtSymbolTable.java:222) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-cad4683 [2019-10-22 11:25:54,072 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 11:25:54,073 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 11:25:54,082 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 11:25:54,083 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 11:25:54,084 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 11:25:54,085 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 11:25:54,086 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 11:25:54,088 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 11:25:54,088 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 11:25:54,089 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 11:25:54,090 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 11:25:54,090 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 11:25:54,091 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 11:25:54,092 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 11:25:54,093 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 11:25:54,094 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 11:25:54,094 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 11:25:54,096 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 11:25:54,098 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 11:25:54,099 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 11:25:54,100 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 11:25:54,101 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 11:25:54,102 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 11:25:54,104 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 11:25:54,104 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 11:25:54,104 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 11:25:54,105 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 11:25:54,106 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 11:25:54,107 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 11:25:54,107 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 11:25:54,108 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 11:25:54,108 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 11:25:54,109 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 11:25:54,115 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 11:25:54,115 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 11:25:54,116 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 11:25:54,116 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 11:25:54,116 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 11:25:54,117 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 11:25:54,117 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 11:25:54,118 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_0b00c3ef-8321-4918-8f39-4612c087658f/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2019-10-22 11:25:54,139 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 11:25:54,139 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 11:25:54,140 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-22 11:25:54,140 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-22 11:25:54,140 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-22 11:25:54,141 INFO L138 SettingsManager]: * Explicit value domain=true [2019-10-22 11:25:54,141 INFO L138 SettingsManager]: * Octagon Domain=false [2019-10-22 11:25:54,141 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-10-22 11:25:54,141 INFO L138 SettingsManager]: * Interval Domain=false [2019-10-22 11:25:54,142 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 11:25:54,142 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-22 11:25:54,142 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-22 11:25:54,142 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 11:25:54,142 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-22 11:25:54,142 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-22 11:25:54,143 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-22 11:25:54,143 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-10-22 11:25:54,143 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-10-22 11:25:54,143 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-22 11:25:54,143 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 11:25:54,143 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 11:25:54,143 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-22 11:25:54,144 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 11:25:54,144 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 11:25:54,144 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-22 11:25:54,144 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-22 11:25:54,146 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:25:54,146 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 11:25:54,146 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-22 11:25:54,146 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-22 11:25:54,147 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-10-22 11:25:54,147 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-10-22 11:25:54,147 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-22 11:25:54,147 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-22 11:25:54,147 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_0b00c3ef-8321-4918-8f39-4612c087658f/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 -> 7aeed2387a92d93d76a9218958b4bab5d23187f1 [2019-10-22 11:25:54,188 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 11:25:54,198 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 11:25:54,201 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 11:25:54,202 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 11:25:54,202 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 11:25:54,203 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_0b00c3ef-8321-4918-8f39-4612c087658f/bin/utaipan/../../sv-benchmarks/c/bitvector-loops/diamond_2-1.c [2019-10-22 11:25:54,250 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_0b00c3ef-8321-4918-8f39-4612c087658f/bin/utaipan/data/fe57cc0fe/318012ee65d64f4eb42f1d9afd4b743a/FLAGcf4787dfa [2019-10-22 11:25:54,672 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 11:25:54,673 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_0b00c3ef-8321-4918-8f39-4612c087658f/sv-benchmarks/c/bitvector-loops/diamond_2-1.c [2019-10-22 11:25:54,677 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_0b00c3ef-8321-4918-8f39-4612c087658f/bin/utaipan/data/fe57cc0fe/318012ee65d64f4eb42f1d9afd4b743a/FLAGcf4787dfa [2019-10-22 11:25:55,054 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_0b00c3ef-8321-4918-8f39-4612c087658f/bin/utaipan/data/fe57cc0fe/318012ee65d64f4eb42f1d9afd4b743a [2019-10-22 11:25:55,057 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 11:25:55,058 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 11:25:55,059 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 11:25:55,059 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 11:25:55,069 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 11:25:55,070 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:25:55" (1/1) ... [2019-10-22 11:25:55,073 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a93105e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:55, skipping insertion in model container [2019-10-22 11:25:55,073 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 11:25:55" (1/1) ... [2019-10-22 11:25:55,079 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 11:25:55,096 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 11:25:55,238 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:25:55,244 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 11:25:55,267 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 11:25:55,280 INFO L192 MainTranslator]: Completed translation [2019-10-22 11:25:55,280 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:55 WrapperNode [2019-10-22 11:25:55,281 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 11:25:55,281 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 11:25:55,281 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 11:25:55,282 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 11:25:55,289 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:55" (1/1) ... [2019-10-22 11:25:55,296 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:55" (1/1) ... [2019-10-22 11:25:55,363 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 11:25:55,364 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 11:25:55,364 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 11:25:55,364 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 11:25:55,370 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:55" (1/1) ... [2019-10-22 11:25:55,371 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:55" (1/1) ... [2019-10-22 11:25:55,371 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:55" (1/1) ... [2019-10-22 11:25:55,372 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:55" (1/1) ... [2019-10-22 11:25:55,375 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:55" (1/1) ... [2019-10-22 11:25:55,380 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:55" (1/1) ... [2019-10-22 11:25:55,381 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:55" (1/1) ... [2019-10-22 11:25:55,382 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 11:25:55,383 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 11:25:55,383 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 11:25:55,383 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 11:25:55,384 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:55" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0b00c3ef-8321-4918-8f39-4612c087658f/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-22 11:25:55,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 11:25:55,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 11:25:55,604 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 11:25:55,605 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-10-22 11:25:55,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:25:55 BoogieIcfgContainer [2019-10-22 11:25:55,606 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 11:25:55,607 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-22 11:25:55,607 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-22 11:25:55,609 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-22 11:25:55,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.10 11:25:55" (1/3) ... [2019-10-22 11:25:55,610 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@284d17b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:25:55, skipping insertion in model container [2019-10-22 11:25:55,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 11:25:55" (2/3) ... [2019-10-22 11:25:55,610 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@284d17b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.10 11:25:55, skipping insertion in model container [2019-10-22 11:25:55,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:25:55" (3/3) ... [2019-10-22 11:25:55,611 INFO L109 eAbstractionObserver]: Analyzing ICFG diamond_2-1.c [2019-10-22 11:25:55,618 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-22 11:25:55,623 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-22 11:25:55,632 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-22 11:25:55,654 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-22 11:25:55,654 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-22 11:25:55,654 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-22 11:25:55,654 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 11:25:55,654 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 11:25:55,654 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-22 11:25:55,654 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 11:25:55,654 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-22 11:25:55,667 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2019-10-22 11:25:55,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-10-22 11:25:55,672 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:55,673 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-10-22 11:25:55,675 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:25:55,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:55,680 INFO L82 PathProgramCache]: Analyzing trace with hash 31771204, now seen corresponding path program 1 times [2019-10-22 11:25:55,687 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:25:55,687 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [909970999] [2019-10-22 11:25:55,687 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0b00c3ef-8321-4918-8f39-4612c087658f/bin/utaipan/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:25:55,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:55,754 INFO L256 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 1 conjunts are in the unsatisfiable core [2019-10-22 11:25:55,758 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:25:55,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:25:55,769 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:25:55,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:25:55,773 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [909970999] [2019-10-22 11:25:55,773 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:25:55,773 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-10-22 11:25:55,774 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440058138] [2019-10-22 11:25:55,777 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-22 11:25:55,777 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:25:55,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-22 11:25:55,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 11:25:55,809 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2019-10-22 11:25:55,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:25:55,823 INFO L93 Difference]: Finished difference Result 26 states and 38 transitions. [2019-10-22 11:25:55,823 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-22 11:25:55,825 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2019-10-22 11:25:55,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:25:55,833 INFO L225 Difference]: With dead ends: 26 [2019-10-22 11:25:55,833 INFO L226 Difference]: Without dead ends: 16 [2019-10-22 11:25:55,836 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-22 11:25:55,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-10-22 11:25:55,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-10-22 11:25:55,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-10-22 11:25:55,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 26 transitions. [2019-10-22 11:25:55,892 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 26 transitions. Word has length 5 [2019-10-22 11:25:55,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:25:55,893 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 26 transitions. [2019-10-22 11:25:55,893 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-22 11:25:55,893 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 26 transitions. [2019-10-22 11:25:55,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-10-22 11:25:55,893 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:55,894 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-10-22 11:25:56,095 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:25:56,095 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:25:56,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:56,096 INFO L82 PathProgramCache]: Analyzing trace with hash 29864580, now seen corresponding path program 1 times [2019-10-22 11:25:56,096 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:25:56,096 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [422654037] [2019-10-22 11:25:56,096 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0b00c3ef-8321-4918-8f39-4612c087658f/bin/utaipan/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:25:56,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:56,121 INFO L256 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 11:25:56,121 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:25:56,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:25:56,138 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:25:56,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:25:56,146 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [422654037] [2019-10-22 11:25:56,146 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:25:56,146 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 3 [2019-10-22 11:25:56,146 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408077575] [2019-10-22 11:25:56,147 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-22 11:25:56,148 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:25:56,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-22 11:25:56,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-22 11:25:56,148 INFO L87 Difference]: Start difference. First operand 16 states and 26 transitions. Second operand 4 states. [2019-10-22 11:25:56,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:25:56,245 INFO L93 Difference]: Finished difference Result 23 states and 35 transitions. [2019-10-22 11:25:56,245 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-22 11:25:56,246 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2019-10-22 11:25:56,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:25:56,247 INFO L225 Difference]: With dead ends: 23 [2019-10-22 11:25:56,247 INFO L226 Difference]: Without dead ends: 19 [2019-10-22 11:25:56,248 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-10-22 11:25:56,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-10-22 11:25:56,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2019-10-22 11:25:56,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-10-22 11:25:56,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 27 transitions. [2019-10-22 11:25:56,252 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 27 transitions. Word has length 5 [2019-10-22 11:25:56,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:25:56,252 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 27 transitions. [2019-10-22 11:25:56,252 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-22 11:25:56,252 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 27 transitions. [2019-10-22 11:25:56,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-22 11:25:56,253 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:56,253 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:25:56,453 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:25:56,454 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:25:56,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:56,454 INFO L82 PathProgramCache]: Analyzing trace with hash -1273519218, now seen corresponding path program 1 times [2019-10-22 11:25:56,454 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:25:56,455 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [815587214] [2019-10-22 11:25:56,455 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0b00c3ef-8321-4918-8f39-4612c087658f/bin/utaipan/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:25:56,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:56,486 INFO L256 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 3 conjunts are in the unsatisfiable core [2019-10-22 11:25:56,487 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:25:56,505 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:25:56,505 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:25:56,511 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:25:56,515 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [815587214] [2019-10-22 11:25:56,515 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:25:56,515 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-10-22 11:25:56,516 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712863235] [2019-10-22 11:25:56,516 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:25:56,516 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:25:56,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:25:56,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:25:56,517 INFO L87 Difference]: Start difference. First operand 17 states and 27 transitions. Second operand 3 states. [2019-10-22 11:25:56,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:25:56,619 INFO L93 Difference]: Finished difference Result 47 states and 77 transitions. [2019-10-22 11:25:56,620 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:25:56,620 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2019-10-22 11:25:56,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:25:56,621 INFO L225 Difference]: With dead ends: 47 [2019-10-22 11:25:56,621 INFO L226 Difference]: Without dead ends: 32 [2019-10-22 11:25:56,621 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:25:56,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-10-22 11:25:56,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 28. [2019-10-22 11:25:56,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2019-10-22 11:25:56,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 39 transitions. [2019-10-22 11:25:56,626 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 39 transitions. Word has length 16 [2019-10-22 11:25:56,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:25:56,627 INFO L462 AbstractCegarLoop]: Abstraction has 28 states and 39 transitions. [2019-10-22 11:25:56,627 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:25:56,627 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 39 transitions. [2019-10-22 11:25:56,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-22 11:25:56,628 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:56,628 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:25:56,829 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:25:56,829 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:25:56,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:56,829 INFO L82 PathProgramCache]: Analyzing trace with hash 38278222, now seen corresponding path program 1 times [2019-10-22 11:25:56,830 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:25:56,830 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [937093800] [2019-10-22 11:25:56,830 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0b00c3ef-8321-4918-8f39-4612c087658f/bin/utaipan/cvc4 Starting monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:25:56,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:56,863 INFO L256 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 2 conjunts are in the unsatisfiable core [2019-10-22 11:25:56,864 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:25:56,871 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:25:56,871 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:25:56,874 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:25:56,874 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [937093800] [2019-10-22 11:25:56,874 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-22 11:25:56,874 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-10-22 11:25:56,875 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261155132] [2019-10-22 11:25:56,875 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-22 11:25:56,875 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:25:56,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-22 11:25:56,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:25:56,876 INFO L87 Difference]: Start difference. First operand 28 states and 39 transitions. Second operand 3 states. [2019-10-22 11:25:56,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:25:56,952 INFO L93 Difference]: Finished difference Result 48 states and 59 transitions. [2019-10-22 11:25:56,952 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-22 11:25:56,952 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2019-10-22 11:25:56,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:25:56,953 INFO L225 Difference]: With dead ends: 48 [2019-10-22 11:25:56,953 INFO L226 Difference]: Without dead ends: 33 [2019-10-22 11:25:56,953 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-22 11:25:56,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2019-10-22 11:25:56,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 29. [2019-10-22 11:25:56,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-10-22 11:25:56,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2019-10-22 11:25:56,961 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 16 [2019-10-22 11:25:56,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:25:56,961 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2019-10-22 11:25:56,961 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-22 11:25:56,962 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2019-10-22 11:25:56,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-22 11:25:56,962 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:25:56,962 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:25:57,163 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:25:57,163 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:25:57,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:25:57,163 INFO L82 PathProgramCache]: Analyzing trace with hash -1974583796, now seen corresponding path program 1 times [2019-10-22 11:25:57,164 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:25:57,164 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [374646332] [2019-10-22 11:25:57,164 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0b00c3ef-8321-4918-8f39-4612c087658f/bin/utaipan/cvc4 Starting monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:25:57,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:57,214 INFO L256 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 12 conjunts are in the unsatisfiable core [2019-10-22 11:25:57,215 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:25:57,331 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:25:57,331 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:25:57,845 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:25:57,846 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [374646332] [2019-10-22 11:25:57,846 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1247720709] [2019-10-22 11:25:57,846 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0b00c3ef-8321-4918-8f39-4612c087658f/bin/utaipan/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:25:57,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-22 11:25:57,873 INFO L256 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 13 conjunts are in the unsatisfiable core [2019-10-22 11:25:57,874 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-22 11:25:57,912 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:25:57,912 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-22 11:25:57,984 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-22 11:25:57,984 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-10-22 11:25:57,985 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12, 13] total 24 [2019-10-22 11:25:57,985 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792297624] [2019-10-22 11:25:57,985 INFO L442 AbstractCegarLoop]: Interpolant automaton has 25 states [2019-10-22 11:25:57,986 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-10-22 11:25:57,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2019-10-22 11:25:57,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=420, Unknown=0, NotChecked=0, Total=600 [2019-10-22 11:25:57,987 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand 25 states. [2019-10-22 11:26:00,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-22 11:26:00,323 INFO L93 Difference]: Finished difference Result 60 states and 62 transitions. [2019-10-22 11:26:00,324 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2019-10-22 11:26:00,324 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 16 [2019-10-22 11:26:00,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-22 11:26:00,325 INFO L225 Difference]: With dead ends: 60 [2019-10-22 11:26:00,325 INFO L226 Difference]: Without dead ends: 56 [2019-10-22 11:26:00,325 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 33 SyntacticMatches, 4 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=512, Invalid=970, Unknown=0, NotChecked=0, Total=1482 [2019-10-22 11:26:00,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2019-10-22 11:26:00,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 50. [2019-10-22 11:26:00,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2019-10-22 11:26:00,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 52 transitions. [2019-10-22 11:26:00,331 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 52 transitions. Word has length 16 [2019-10-22 11:26:00,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-22 11:26:00,332 INFO L462 AbstractCegarLoop]: Abstraction has 50 states and 52 transitions. [2019-10-22 11:26:00,332 INFO L463 AbstractCegarLoop]: Interpolant automaton has 25 states. [2019-10-22 11:26:00,332 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 52 transitions. [2019-10-22 11:26:00,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-22 11:26:00,332 INFO L372 BasicCegarLoop]: Found error trace [2019-10-22 11:26:00,332 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-22 11:26:00,733 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 cvc4 --incremental --print-success --lang smt --rewrite-divk,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-22 11:26:00,734 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-22 11:26:00,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 11:26:00,734 INFO L82 PathProgramCache]: Analyzing trace with hash -1301479604, now seen corresponding path program 1 times [2019-10-22 11:26:00,734 INFO L157 tionRefinementEngine]: Executing refinement strategy WALRUS [2019-10-22 11:26:00,734 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [676334989] [2019-10-22 11:26:00,734 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_0b00c3ef-8321-4918-8f39-4612c087658f/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 11:26:00,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 11:26:00,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 11:26:00,826 INFO L168 tionRefinementEngine]: Strategy WALRUS found a feasible trace [2019-10-22 11:26:00,826 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-22 11:26:01,026 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-10-22 11:26:01,041 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.10 11:26:01 BoogieIcfgContainer [2019-10-22 11:26:01,041 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-22 11:26:01,042 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 11:26:01,042 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 11:26:01,042 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 11:26:01,042 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 11:25:55" (3/4) ... [2019-10-22 11:26:01,045 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-10-22 11:26:01,094 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_0b00c3ef-8321-4918-8f39-4612c087658f/bin/utaipan/witness.graphml [2019-10-22 11:26:01,094 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 11:26:01,099 INFO L168 Benchmark]: Toolchain (without parser) took 6037.72 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 213.4 MB). Free memory was 945.6 MB in the beginning and 1.2 GB in the end (delta: -237.5 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:26:01,099 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 972.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:26:01,099 INFO L168 Benchmark]: CACSL2BoogieTranslator took 221.73 ms. Allocated memory is still 1.0 GB. Free memory was 945.6 MB in the beginning and 934.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:01,103 INFO L168 Benchmark]: Boogie Procedure Inliner took 82.21 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 159.4 MB). Free memory was 934.9 MB in the beginning and 1.2 GB in the end (delta: -220.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:01,105 INFO L168 Benchmark]: Boogie Preprocessor took 18.92 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: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:01,105 INFO L168 Benchmark]: RCFGBuilder took 223.23 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: 17.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:01,105 INFO L168 Benchmark]: TraceAbstraction took 5434.68 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 54.0 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -58.6 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 11:26:01,106 INFO L168 Benchmark]: Witness Printer took 52.79 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: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. [2019-10-22 11:26:01,107 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 972.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 221.73 ms. Allocated memory is still 1.0 GB. Free memory was 945.6 MB in the beginning and 934.9 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 82.21 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 159.4 MB). Free memory was 934.9 MB in the beginning and 1.2 GB in the end (delta: -220.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.92 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: 6.5 MB). Peak memory consumption was 6.5 MB. Max. memory is 11.5 GB. * RCFGBuilder took 223.23 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: 17.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 5434.68 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 54.0 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -58.6 MB). There was no memory consumed. Max. memory is 11.5 GB. * Witness Printer took 52.79 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: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 6]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L12] unsigned int x = 0; [L13] unsigned int y = __VERIFIER_nondet_uint(); [L15] COND TRUE x < 99 [L16] COND FALSE !(y % 2 == 0) [L17] x += 2 [L19] COND FALSE !(y % 2 == 0) [L20] x -= 2 [L22] COND FALSE !(y % 2 == 0) [L23] x += 2 [L25] COND FALSE !(y % 2 == 0) [L26] x -= 2 [L28] COND FALSE !(y % 2 == 0) [L29] x += 2 [L31] COND FALSE !(y % 2 == 0) [L32] x -= 4 [L34] COND FALSE !(y % 2 == 0) [L35] x += 4 [L37] COND FALSE !(y % 2 == 0) [L38] x += 2 [L40] COND FALSE !(y % 2 == 0) [L41] x -= 4 [L43] COND FALSE !(y % 2 == 0) [L44] x -= 4 [L15] COND FALSE !(x < 99) [L5] COND TRUE !(cond) [L6] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 1 error locations. Result: UNSAFE, OverallTime: 5.3s, OverallIterations: 6, TraceHistogramMax: 1, AutomataDifference: 2.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 90 SDtfs, 89 SDslu, 42 SDs, 0 SdLazy, 487 SolverSat, 320 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 150 GetRequests, 105 SyntacticMatches, 4 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=50occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 16 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 90 NumberOfCodeBlocks, 90 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 136 ConstructedInterpolants, 0 QuantifiedInterpolants, 5900 SizeOfPredicates, 3 NumberOfNonLiveVariables, 138 ConjunctsInSsa, 33 ConjunctsInUnsatCore, 12 InterpolantComputations, 8 PerfectInterpolantSequences, 4/8 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...