./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/id2_i5_o5-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_42e22987-4695-40bb-96b3-55851c46aec3/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_42e22987-4695-40bb-96b3-55851c46aec3/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_42e22987-4695-40bb-96b3-55851c46aec3/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_42e22987-4695-40bb-96b3-55851c46aec3/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursive-simple/id2_i5_o5-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_42e22987-4695-40bb-96b3-55851c46aec3/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_42e22987-4695-40bb-96b3-55851c46aec3/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 9448a6696b4991e038dda55623feb6ffc9366da0 ........................................................................................................................................................................................................................................................................................................................................... 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/run_dir_42e22987-4695-40bb-96b3-55851c46aec3/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_42e22987-4695-40bb-96b3-55851c46aec3/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_42e22987-4695-40bb-96b3-55851c46aec3/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_42e22987-4695-40bb-96b3-55851c46aec3/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/recursive-simple/id2_i5_o5-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_42e22987-4695-40bb-96b3-55851c46aec3/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_42e22987-4695-40bb-96b3-55851c46aec3/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 9448a6696b4991e038dda55623feb6ffc9366da0 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.24-6b5699a [2019-11-26 02:37:13,897 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:37:13,899 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:37:13,913 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:37:13,914 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:37:13,915 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:37:13,917 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:37:13,924 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:37:13,929 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:37:13,933 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:37:13,935 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:37:13,936 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:37:13,936 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:37:13,938 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:37:13,939 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:37:13,940 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:37:13,940 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:37:13,941 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:37:13,943 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:37:13,948 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:37:13,952 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:37:13,954 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:37:13,955 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:37:13,956 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:37:13,958 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:37:13,958 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:37:13,958 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:37:13,959 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:37:13,959 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:37:13,960 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:37:13,960 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:37:13,960 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:37:13,961 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:37:13,962 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:37:13,962 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:37:13,963 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:37:13,966 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:37:13,966 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:37:13,967 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:37:13,968 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:37:13,969 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:37:13,970 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_42e22987-4695-40bb-96b3-55851c46aec3/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-26 02:37:13,998 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:37:13,998 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:37:13,999 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:37:13,999 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:37:13,999 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:37:13,999 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:37:13,999 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-26 02:37:14,000 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:37:14,000 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:37:14,000 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-26 02:37:14,000 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-26 02:37:14,000 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:37:14,001 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-26 02:37:14,001 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-26 02:37:14,001 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-26 02:37:14,001 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:37:14,002 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:37:14,002 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-26 02:37:14,002 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:37:14,002 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:37:14,002 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:37:14,002 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:37:14,003 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:37:14,003 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:37:14,003 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:37:14,003 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:37:14,003 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:37:14,004 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:37:14,004 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:37:14,004 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:37:14,004 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:37:14,004 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:37:14,005 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:37:14,005 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-26 02:37:14,005 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-26 02:37:14,005 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:37:14,005 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:37:14,005 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/run_dir_42e22987-4695-40bb-96b3-55851c46aec3/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 -> 9448a6696b4991e038dda55623feb6ffc9366da0 [2019-11-26 02:37:14,142 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:37:14,152 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:37:14,155 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:37:14,156 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:37:14,156 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:37:14,157 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_42e22987-4695-40bb-96b3-55851c46aec3/bin/utaipan/../../sv-benchmarks/c/recursive-simple/id2_i5_o5-2.c [2019-11-26 02:37:14,218 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_42e22987-4695-40bb-96b3-55851c46aec3/bin/utaipan/data/cb3d32b4d/a5b4392216c24421aecfb209015b48d5/FLAGdf9a5879c [2019-11-26 02:37:14,604 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:37:14,605 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_42e22987-4695-40bb-96b3-55851c46aec3/sv-benchmarks/c/recursive-simple/id2_i5_o5-2.c [2019-11-26 02:37:14,610 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_42e22987-4695-40bb-96b3-55851c46aec3/bin/utaipan/data/cb3d32b4d/a5b4392216c24421aecfb209015b48d5/FLAGdf9a5879c [2019-11-26 02:37:15,018 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_42e22987-4695-40bb-96b3-55851c46aec3/bin/utaipan/data/cb3d32b4d/a5b4392216c24421aecfb209015b48d5 [2019-11-26 02:37:15,021 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:37:15,022 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:37:15,023 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:37:15,023 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:37:15,026 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:37:15,027 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:37:15" (1/1) ... [2019-11-26 02:37:15,029 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@593f2bd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:37:15, skipping insertion in model container [2019-11-26 02:37:15,029 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:37:15" (1/1) ... [2019-11-26 02:37:15,036 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:37:15,048 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:37:15,176 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:37:15,179 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:37:15,252 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:37:15,265 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:37:15,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:37:15 WrapperNode [2019-11-26 02:37:15,266 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:37:15,266 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:37:15,266 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:37:15,266 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:37:15,274 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:37:15" (1/1) ... [2019-11-26 02:37:15,278 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:37:15" (1/1) ... [2019-11-26 02:37:15,292 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:37:15,293 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:37:15,293 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:37:15,293 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:37:15,301 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:37:15" (1/1) ... [2019-11-26 02:37:15,301 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:37:15" (1/1) ... [2019-11-26 02:37:15,302 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:37:15" (1/1) ... [2019-11-26 02:37:15,302 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:37:15" (1/1) ... [2019-11-26 02:37:15,304 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:37:15" (1/1) ... [2019-11-26 02:37:15,305 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:37:15" (1/1) ... [2019-11-26 02:37:15,306 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:37:15" (1/1) ... [2019-11-26 02:37:15,307 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:37:15,308 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:37:15,308 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:37:15,308 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:37:15,309 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:37:15" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42e22987-4695-40bb-96b3-55851c46aec3/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 [2019-11-26 02:37:15,375 INFO L130 BoogieDeclarations]: Found specification of procedure id2 [2019-11-26 02:37:15,377 INFO L138 BoogieDeclarations]: Found implementation of procedure id2 [2019-11-26 02:37:15,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:37:15,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:37:15,377 INFO L130 BoogieDeclarations]: Found specification of procedure id [2019-11-26 02:37:15,378 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2019-11-26 02:37:15,601 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:37:15,602 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-26 02:37:15,602 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:37:15 BoogieIcfgContainer [2019-11-26 02:37:15,603 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:37:15,604 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:37:15,604 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:37:15,606 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:37:15,606 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:37:15" (1/3) ... [2019-11-26 02:37:15,607 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63b7862b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:37:15, skipping insertion in model container [2019-11-26 02:37:15,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:37:15" (2/3) ... [2019-11-26 02:37:15,619 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63b7862b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:37:15, skipping insertion in model container [2019-11-26 02:37:15,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:37:15" (3/3) ... [2019-11-26 02:37:15,621 INFO L109 eAbstractionObserver]: Analyzing ICFG id2_i5_o5-2.c [2019-11-26 02:37:15,629 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:37:15,637 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-26 02:37:15,647 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-26 02:37:15,672 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:37:15,673 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:37:15,673 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:37:15,673 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:37:15,673 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:37:15,673 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:37:15,673 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:37:15,673 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:37:15,689 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2019-11-26 02:37:15,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-26 02:37:15,694 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:37:15,694 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:37:15,695 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:37:15,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:37:15,700 INFO L82 PathProgramCache]: Analyzing trace with hash 2105267373, now seen corresponding path program 1 times [2019-11-26 02:37:15,708 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:37:15,708 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013937182] [2019-11-26 02:37:15,709 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:37:15,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:37:15,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:37:15,843 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013937182] [2019-11-26 02:37:15,844 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:37:15,844 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-26 02:37:15,846 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658487436] [2019-11-26 02:37:15,849 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-26 02:37:15,849 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:37:15,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-26 02:37:15,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-26 02:37:15,863 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 5 states. [2019-11-26 02:37:15,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:37:15,938 INFO L93 Difference]: Finished difference Result 28 states and 32 transitions. [2019-11-26 02:37:15,939 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-26 02:37:15,940 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 9 [2019-11-26 02:37:15,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:37:15,948 INFO L225 Difference]: With dead ends: 28 [2019-11-26 02:37:15,948 INFO L226 Difference]: Without dead ends: 20 [2019-11-26 02:37:15,951 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-26 02:37:15,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-11-26 02:37:15,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-11-26 02:37:15,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-11-26 02:37:15,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2019-11-26 02:37:15,987 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 9 [2019-11-26 02:37:15,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:37:15,988 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2019-11-26 02:37:15,988 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-26 02:37:15,988 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2019-11-26 02:37:15,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-26 02:37:15,989 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:37:15,989 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:37:15,990 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:37:15,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:37:15,990 INFO L82 PathProgramCache]: Analyzing trace with hash -131148366, now seen corresponding path program 1 times [2019-11-26 02:37:15,990 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:37:15,990 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786273918] [2019-11-26 02:37:15,990 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:37:16,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:37:16,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:37:16,065 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786273918] [2019-11-26 02:37:16,065 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:37:16,065 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-26 02:37:16,065 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605628534] [2019-11-26 02:37:16,066 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-26 02:37:16,066 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-26 02:37:16,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-26 02:37:16,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-11-26 02:37:16,067 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 7 states. [2019-11-26 02:37:16,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:37:16,263 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2019-11-26 02:37:16,263 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-26 02:37:16,263 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2019-11-26 02:37:16,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:37:16,264 INFO L225 Difference]: With dead ends: 29 [2019-11-26 02:37:16,264 INFO L226 Difference]: Without dead ends: 25 [2019-11-26 02:37:16,265 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-11-26 02:37:16,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-11-26 02:37:16,270 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2019-11-26 02:37:16,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-11-26 02:37:16,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2019-11-26 02:37:16,271 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 15 [2019-11-26 02:37:16,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:37:16,272 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2019-11-26 02:37:16,272 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-26 02:37:16,272 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2019-11-26 02:37:16,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-11-26 02:37:16,273 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:37:16,273 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:37:16,273 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:37:16,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:37:16,273 INFO L82 PathProgramCache]: Analyzing trace with hash -132605643, now seen corresponding path program 1 times [2019-11-26 02:37:16,273 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-26 02:37:16,274 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189465112] [2019-11-26 02:37:16,274 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-26 02:37:16,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:37:16,352 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-26 02:37:16,353 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189465112] [2019-11-26 02:37:16,353 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1544346187] [2019-11-26 02:37:16,353 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42e22987-4695-40bb-96b3-55851c46aec3/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 [2019-11-26 02:37:16,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:37:16,396 INFO L255 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-26 02:37:16,402 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:37:16,436 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-26 02:37:16,437 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:37:16,720 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:37:16,781 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:37:16,825 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-26 02:37:16,825 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1784102707] [2019-11-26 02:37:16,850 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2019-11-26 02:37:16,858 INFO L166 IcfgInterpreter]: Building call graph [2019-11-26 02:37:16,863 FATAL L310 FreeRefinementEngine]: Exception during interpolant generation: IllegalArgumentException [2019-11-26 02:37:17,070 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:37:17,070 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalArgumentException: Recursive programs are not supported. at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) at de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.(CallGraph.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.(IcfgInterpreter.java:92) at de.uni_freiburg.informatik.ultimate.plugins.sifa.SifaBuilder.construct(SifaBuilder.java:94) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:98) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) 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.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:297) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:190) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:180) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:463) 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:333) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:171) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:123) 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) [2019-11-26 02:37:17,074 INFO L168 Benchmark]: Toolchain (without parser) took 2051.48 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 943.4 MB in the beginning and 1.0 GB in the end (delta: -65.8 MB). Peak memory consumption was 67.9 MB. Max. memory is 11.5 GB. [2019-11-26 02:37:17,074 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:37:17,075 INFO L168 Benchmark]: CACSL2BoogieTranslator took 243.35 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 943.4 MB in the beginning and 1.1 GB in the end (delta: -186.3 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. [2019-11-26 02:37:17,075 INFO L168 Benchmark]: Boogie Procedure Inliner took 26.18 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. [2019-11-26 02:37:17,075 INFO L168 Benchmark]: Boogie Preprocessor took 14.69 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. [2019-11-26 02:37:17,076 INFO L168 Benchmark]: RCFGBuilder took 295.10 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: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 11.5 GB. [2019-11-26 02:37:17,077 INFO L168 Benchmark]: TraceAbstraction took 1468.65 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 101.3 MB). Peak memory consumption was 101.3 MB. Max. memory is 11.5 GB. [2019-11-26 02:37:17,079 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 243.35 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 943.4 MB in the beginning and 1.1 GB in the end (delta: -186.3 MB). Peak memory consumption was 23.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 26.18 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 14.69 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 295.10 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: 19.2 MB). Peak memory consumption was 19.2 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1468.65 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 101.3 MB). Peak memory consumption was 101.3 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: IllegalArgumentException: Recursive programs are not supported. de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalArgumentException: Recursive programs are not supported.: de.uni_freiburg.informatik.ultimate.lib.sifa.CallGraph.topsortRelevant(CallGraph.java:132) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.24-6b5699a [2019-11-26 02:37:18,810 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-26 02:37:18,813 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-26 02:37:18,825 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-26 02:37:18,825 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-26 02:37:18,827 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-26 02:37:18,829 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-26 02:37:18,837 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-26 02:37:18,843 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-26 02:37:18,846 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-26 02:37:18,847 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-26 02:37:18,849 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-26 02:37:18,850 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-26 02:37:18,852 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-26 02:37:18,853 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-26 02:37:18,854 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-26 02:37:18,856 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-26 02:37:18,856 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-26 02:37:18,859 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-26 02:37:18,862 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-26 02:37:18,865 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-26 02:37:18,869 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-26 02:37:18,870 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-26 02:37:18,871 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-26 02:37:18,875 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-26 02:37:18,875 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-26 02:37:18,876 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-26 02:37:18,877 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-26 02:37:18,878 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-26 02:37:18,878 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-26 02:37:18,879 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-26 02:37:18,879 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-26 02:37:18,880 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-26 02:37:18,881 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-26 02:37:18,882 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-26 02:37:18,882 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-26 02:37:18,882 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-26 02:37:18,883 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-26 02:37:18,883 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-26 02:37:18,884 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-26 02:37:18,885 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-26 02:37:18,886 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_42e22987-4695-40bb-96b3-55851c46aec3/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2019-11-26 02:37:18,911 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-26 02:37:18,912 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-26 02:37:18,913 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-26 02:37:18,913 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-26 02:37:18,914 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-26 02:37:18,914 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-26 02:37:18,914 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-26 02:37:18,914 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-26 02:37:18,915 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-26 02:37:18,915 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-26 02:37:18,916 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-26 02:37:18,917 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-26 02:37:18,917 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-26 02:37:18,917 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-26 02:37:18,917 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-26 02:37:18,917 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-26 02:37:18,918 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-26 02:37:18,918 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-26 02:37:18,918 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-26 02:37:18,919 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-26 02:37:18,919 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-26 02:37:18,919 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-26 02:37:18,919 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-26 02:37:18,920 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-26 02:37:18,920 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-26 02:37:18,920 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-26 02:37:18,920 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-26 02:37:18,920 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-26 02:37:18,921 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-26 02:37:18,921 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-26 02:37:18,921 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-26 02:37:18,921 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-11-26 02:37:18,922 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-26 02:37:18,922 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-26 02:37:18,922 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-26 02:37:18,923 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/run_dir_42e22987-4695-40bb-96b3-55851c46aec3/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 -> 9448a6696b4991e038dda55623feb6ffc9366da0 [2019-11-26 02:37:19,206 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-26 02:37:19,218 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-26 02:37:19,222 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-26 02:37:19,223 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-26 02:37:19,223 INFO L275 PluginConnector]: CDTParser initialized [2019-11-26 02:37:19,224 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_42e22987-4695-40bb-96b3-55851c46aec3/bin/utaipan/../../sv-benchmarks/c/recursive-simple/id2_i5_o5-2.c [2019-11-26 02:37:19,276 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_42e22987-4695-40bb-96b3-55851c46aec3/bin/utaipan/data/21d7f7f69/db07789fd50444449f98036c3c0f1176/FLAGc988c1df2 [2019-11-26 02:37:19,650 INFO L306 CDTParser]: Found 1 translation units. [2019-11-26 02:37:19,651 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_42e22987-4695-40bb-96b3-55851c46aec3/sv-benchmarks/c/recursive-simple/id2_i5_o5-2.c [2019-11-26 02:37:19,655 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_42e22987-4695-40bb-96b3-55851c46aec3/bin/utaipan/data/21d7f7f69/db07789fd50444449f98036c3c0f1176/FLAGc988c1df2 [2019-11-26 02:37:20,070 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_42e22987-4695-40bb-96b3-55851c46aec3/bin/utaipan/data/21d7f7f69/db07789fd50444449f98036c3c0f1176 [2019-11-26 02:37:20,073 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-26 02:37:20,074 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-26 02:37:20,080 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-26 02:37:20,080 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-26 02:37:20,083 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-26 02:37:20,089 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:37:20" (1/1) ... [2019-11-26 02:37:20,092 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26e8b0a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:37:20, skipping insertion in model container [2019-11-26 02:37:20,092 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 02:37:20" (1/1) ... [2019-11-26 02:37:20,099 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-26 02:37:20,116 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-26 02:37:20,310 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:37:20,317 INFO L201 MainTranslator]: Completed pre-run [2019-11-26 02:37:20,332 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-26 02:37:20,344 INFO L205 MainTranslator]: Completed translation [2019-11-26 02:37:20,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:37:20 WrapperNode [2019-11-26 02:37:20,345 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-26 02:37:20,345 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-26 02:37:20,346 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-26 02:37:20,346 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-26 02:37:20,353 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:37:20" (1/1) ... [2019-11-26 02:37:20,359 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:37:20" (1/1) ... [2019-11-26 02:37:20,456 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-26 02:37:20,457 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-26 02:37:20,457 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-26 02:37:20,457 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-26 02:37:20,465 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:37:20" (1/1) ... [2019-11-26 02:37:20,465 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:37:20" (1/1) ... [2019-11-26 02:37:20,467 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:37:20" (1/1) ... [2019-11-26 02:37:20,467 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:37:20" (1/1) ... [2019-11-26 02:37:20,472 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:37:20" (1/1) ... [2019-11-26 02:37:20,474 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:37:20" (1/1) ... [2019-11-26 02:37:20,475 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:37:20" (1/1) ... [2019-11-26 02:37:20,477 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-26 02:37:20,477 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-26 02:37:20,478 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-26 02:37:20,478 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-26 02:37:20,479 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:37:20" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42e22987-4695-40bb-96b3-55851c46aec3/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 [2019-11-26 02:37:20,531 INFO L130 BoogieDeclarations]: Found specification of procedure id2 [2019-11-26 02:37:20,531 INFO L138 BoogieDeclarations]: Found implementation of procedure id2 [2019-11-26 02:37:20,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-26 02:37:20,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-26 02:37:20,533 INFO L130 BoogieDeclarations]: Found specification of procedure id [2019-11-26 02:37:20,533 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2019-11-26 02:37:20,690 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-26 02:37:20,690 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-26 02:37:20,691 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:37:20 BoogieIcfgContainer [2019-11-26 02:37:20,691 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-26 02:37:20,692 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-26 02:37:20,692 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-26 02:37:20,694 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-26 02:37:20,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 02:37:20" (1/3) ... [2019-11-26 02:37:20,695 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57ae4a10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:37:20, skipping insertion in model container [2019-11-26 02:37:20,696 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 02:37:20" (2/3) ... [2019-11-26 02:37:20,696 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57ae4a10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 02:37:20, skipping insertion in model container [2019-11-26 02:37:20,696 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:37:20" (3/3) ... [2019-11-26 02:37:20,698 INFO L109 eAbstractionObserver]: Analyzing ICFG id2_i5_o5-2.c [2019-11-26 02:37:20,706 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-26 02:37:20,711 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-26 02:37:20,721 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-26 02:37:20,740 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-26 02:37:20,741 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-26 02:37:20,741 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-26 02:37:20,741 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-26 02:37:20,741 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-26 02:37:20,741 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-26 02:37:20,742 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-26 02:37:20,742 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-26 02:37:20,757 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2019-11-26 02:37:20,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-26 02:37:20,761 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:37:20,762 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:37:20,763 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:37:20,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:37:20,768 INFO L82 PathProgramCache]: Analyzing trace with hash 2105267373, now seen corresponding path program 1 times [2019-11-26 02:37:20,776 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:37:20,776 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [107684977] [2019-11-26 02:37:20,776 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42e22987-4695-40bb-96b3-55851c46aec3/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 [2019-11-26 02:37:20,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:37:20,820 INFO L255 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-26 02:37:20,825 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:37:20,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:37:20,925 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:37:21,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:37:21,016 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [107684977] [2019-11-26 02:37:21,017 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:37:21,017 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2019-11-26 02:37:21,018 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510213804] [2019-11-26 02:37:21,021 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-26 02:37:21,021 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:37:21,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-26 02:37:21,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-11-26 02:37:21,031 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 7 states. [2019-11-26 02:37:21,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:37:21,142 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2019-11-26 02:37:21,144 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-26 02:37:21,145 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 9 [2019-11-26 02:37:21,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:37:21,153 INFO L225 Difference]: With dead ends: 30 [2019-11-26 02:37:21,154 INFO L226 Difference]: Without dead ends: 20 [2019-11-26 02:37:21,166 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-11-26 02:37:21,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-11-26 02:37:21,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-11-26 02:37:21,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-11-26 02:37:21,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2019-11-26 02:37:21,208 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 9 [2019-11-26 02:37:21,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:37:21,209 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2019-11-26 02:37:21,209 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-26 02:37:21,209 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2019-11-26 02:37:21,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-26 02:37:21,212 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:37:21,212 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:37:21,413 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:37:21,413 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:37:21,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:37:21,414 INFO L82 PathProgramCache]: Analyzing trace with hash -131148366, now seen corresponding path program 1 times [2019-11-26 02:37:21,414 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:37:21,414 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [697257244] [2019-11-26 02:37:21,414 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42e22987-4695-40bb-96b3-55851c46aec3/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 [2019-11-26 02:37:21,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:37:21,452 INFO L255 TraceCheckSpWp]: Trace formula consists of 22 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-26 02:37:21,453 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:37:21,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:37:21,531 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:37:21,716 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:37:21,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-26 02:37:21,743 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [697257244] [2019-11-26 02:37:21,743 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-26 02:37:21,744 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 10 [2019-11-26 02:37:21,744 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404568837] [2019-11-26 02:37:21,746 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-26 02:37:21,746 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:37:21,746 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-26 02:37:21,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-11-26 02:37:21,747 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 10 states. [2019-11-26 02:37:21,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:37:21,857 INFO L93 Difference]: Finished difference Result 29 states and 31 transitions. [2019-11-26 02:37:21,858 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-26 02:37:21,858 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 15 [2019-11-26 02:37:21,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:37:21,859 INFO L225 Difference]: With dead ends: 29 [2019-11-26 02:37:21,859 INFO L226 Difference]: Without dead ends: 25 [2019-11-26 02:37:21,861 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2019-11-26 02:37:21,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-11-26 02:37:21,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2019-11-26 02:37:21,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-11-26 02:37:21,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2019-11-26 02:37:21,867 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 15 [2019-11-26 02:37:21,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:37:21,868 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2019-11-26 02:37:21,868 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-26 02:37:21,868 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2019-11-26 02:37:21,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-11-26 02:37:21,869 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:37:21,869 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:37:22,071 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:37:22,071 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:37:22,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:37:22,072 INFO L82 PathProgramCache]: Analyzing trace with hash -132605643, now seen corresponding path program 1 times [2019-11-26 02:37:22,072 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:37:22,072 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [536446857] [2019-11-26 02:37:22,073 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42e22987-4695-40bb-96b3-55851c46aec3/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 [2019-11-26 02:37:22,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:37:22,124 INFO L255 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-26 02:37:22,125 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:37:22,178 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-26 02:37:22,178 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:37:22,426 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:37:22,518 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:37:22,552 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-26 02:37:22,556 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [536446857] [2019-11-26 02:37:22,556 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [744323698] [2019-11-26 02:37:22,557 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42e22987-4695-40bb-96b3-55851c46aec3/bin/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:37:22,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:37:22,595 INFO L255 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-26 02:37:22,598 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:37:22,611 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-26 02:37:22,614 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:37:22,812 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:37:22,861 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:37:22,870 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-11-26 02:37:22,870 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-11-26 02:37:22,870 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8, 9] total 12 [2019-11-26 02:37:22,870 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211861717] [2019-11-26 02:37:22,871 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-26 02:37:22,871 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:37:22,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-26 02:37:22,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2019-11-26 02:37:22,872 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 12 states. [2019-11-26 02:37:23,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:37:23,030 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2019-11-26 02:37:23,030 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-26 02:37:23,031 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 21 [2019-11-26 02:37:23,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:37:23,032 INFO L225 Difference]: With dead ends: 35 [2019-11-26 02:37:23,032 INFO L226 Difference]: Without dead ends: 31 [2019-11-26 02:37:23,033 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 66 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2019-11-26 02:37:23,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-11-26 02:37:23,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 26. [2019-11-26 02:37:23,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-26 02:37:23,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2019-11-26 02:37:23,039 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 21 [2019-11-26 02:37:23,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:37:23,039 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2019-11-26 02:37:23,039 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-26 02:37:23,039 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2019-11-26 02:37:23,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-11-26 02:37:23,040 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:37:23,041 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:37:23,450 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:37:23,450 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:37:23,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:37:23,450 INFO L82 PathProgramCache]: Analyzing trace with hash -614490246, now seen corresponding path program 1 times [2019-11-26 02:37:23,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:37:23,451 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1136622598] [2019-11-26 02:37:23,451 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42e22987-4695-40bb-96b3-55851c46aec3/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 [2019-11-26 02:37:23,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:37:23,488 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-26 02:37:23,490 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:37:23,566 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-26 02:37:23,566 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:37:23,861 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:37:23,943 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:37:23,984 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:37:24,008 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-26 02:37:24,008 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1136622598] [2019-11-26 02:37:24,009 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1338254095] [2019-11-26 02:37:24,009 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42e22987-4695-40bb-96b3-55851c46aec3/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 [2019-11-26 02:37:24,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-26 02:37:24,051 INFO L255 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-26 02:37:24,053 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:37:24,059 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-26 02:37:24,059 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:37:24,298 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:37:24,346 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:37:24,399 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:37:24,403 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-11-26 02:37:24,403 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-11-26 02:37:24,403 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 9, 11] total 14 [2019-11-26 02:37:24,404 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710240460] [2019-11-26 02:37:24,404 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-11-26 02:37:24,404 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:37:24,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-11-26 02:37:24,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2019-11-26 02:37:24,405 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand 14 states. [2019-11-26 02:37:24,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:37:24,533 INFO L93 Difference]: Finished difference Result 41 states and 43 transitions. [2019-11-26 02:37:24,533 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-26 02:37:24,534 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 27 [2019-11-26 02:37:24,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:37:24,535 INFO L225 Difference]: With dead ends: 41 [2019-11-26 02:37:24,535 INFO L226 Difference]: Without dead ends: 37 [2019-11-26 02:37:24,536 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2019-11-26 02:37:24,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-11-26 02:37:24,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 29. [2019-11-26 02:37:24,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-26 02:37:24,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2019-11-26 02:37:24,542 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 27 [2019-11-26 02:37:24,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:37:24,543 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2019-11-26 02:37:24,543 INFO L463 AbstractCegarLoop]: Interpolant automaton has 14 states. [2019-11-26 02:37:24,543 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2019-11-26 02:37:24,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-11-26 02:37:24,544 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:37:24,544 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:37:24,949 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 [2019-11-26 02:37:24,949 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:37:24,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:37:24,950 INFO L82 PathProgramCache]: Analyzing trace with hash -2127867459, now seen corresponding path program 2 times [2019-11-26 02:37:24,950 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:37:24,951 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [44436458] [2019-11-26 02:37:24,951 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42e22987-4695-40bb-96b3-55851c46aec3/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 [2019-11-26 02:37:24,989 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-26 02:37:24,989 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-26 02:37:24,990 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-26 02:37:24,991 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:37:25,061 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-11-26 02:37:25,061 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:37:25,365 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:37:25,459 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:37:25,541 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:37:25,586 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:37:25,614 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-26 02:37:25,614 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [44436458] [2019-11-26 02:37:25,615 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1688563813] [2019-11-26 02:37:25,615 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42e22987-4695-40bb-96b3-55851c46aec3/bin/utaipan/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:37:25,649 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-26 02:37:25,649 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-26 02:37:25,652 INFO L255 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 12 conjunts are in the unsatisfiable core [2019-11-26 02:37:25,653 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:37:25,660 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2019-11-26 02:37:25,660 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:37:25,966 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:37:26,035 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:37:26,083 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:37:26,122 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:37:26,142 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-26 02:37:26,143 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-11-26 02:37:26,143 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13, 10, 13] total 16 [2019-11-26 02:37:26,143 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730010592] [2019-11-26 02:37:26,144 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-26 02:37:26,144 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:37:26,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-26 02:37:26,144 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2019-11-26 02:37:26,145 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand 16 states. [2019-11-26 02:37:26,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:37:26,321 INFO L93 Difference]: Finished difference Result 47 states and 49 transitions. [2019-11-26 02:37:26,321 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-11-26 02:37:26,321 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 33 [2019-11-26 02:37:26,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:37:26,323 INFO L225 Difference]: With dead ends: 47 [2019-11-26 02:37:26,323 INFO L226 Difference]: Without dead ends: 43 [2019-11-26 02:37:26,324 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 110 SyntacticMatches, 4 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2019-11-26 02:37:26,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-11-26 02:37:26,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 32. [2019-11-26 02:37:26,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-11-26 02:37:26,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2019-11-26 02:37:26,330 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 33 [2019-11-26 02:37:26,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:37:26,330 INFO L462 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2019-11-26 02:37:26,330 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-26 02:37:26,330 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2019-11-26 02:37:26,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-11-26 02:37:26,331 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:37:26,331 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:37:26,732 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,8 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:37:26,732 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:37:26,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:37:26,733 INFO L82 PathProgramCache]: Analyzing trace with hash -1002836670, now seen corresponding path program 2 times [2019-11-26 02:37:26,733 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:37:26,733 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [631728380] [2019-11-26 02:37:26,733 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42e22987-4695-40bb-96b3-55851c46aec3/bin/utaipan/cvc4 Starting monitored process 10 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:37:26,781 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-26 02:37:26,782 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-26 02:37:26,782 INFO L255 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 15 conjunts are in the unsatisfiable core [2019-11-26 02:37:26,784 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:37:26,927 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-26 02:37:26,928 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:37:27,328 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-26 02:37:27,328 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [631728380] [2019-11-26 02:37:27,328 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [223571849] [2019-11-26 02:37:27,329 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42e22987-4695-40bb-96b3-55851c46aec3/bin/utaipan/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:37:27,364 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-26 02:37:27,365 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-26 02:37:27,366 INFO L255 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 14 conjunts are in the unsatisfiable core [2019-11-26 02:37:27,367 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:37:27,428 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-26 02:37:27,428 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:37:27,872 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2019-11-26 02:37:27,872 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-11-26 02:37:27,873 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15, 15] total 15 [2019-11-26 02:37:27,873 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687999723] [2019-11-26 02:37:27,873 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-11-26 02:37:27,873 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:37:27,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-11-26 02:37:27,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2019-11-26 02:37:27,874 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand 15 states. [2019-11-26 02:37:27,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:37:27,982 INFO L93 Difference]: Finished difference Result 53 states and 55 transitions. [2019-11-26 02:37:27,983 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-11-26 02:37:27,983 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 39 [2019-11-26 02:37:27,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:37:27,984 INFO L225 Difference]: With dead ends: 53 [2019-11-26 02:37:27,984 INFO L226 Difference]: Without dead ends: 49 [2019-11-26 02:37:27,985 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 132 SyntacticMatches, 7 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2019-11-26 02:37:27,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2019-11-26 02:37:27,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 35. [2019-11-26 02:37:27,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-11-26 02:37:27,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 37 transitions. [2019-11-26 02:37:27,990 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 37 transitions. Word has length 39 [2019-11-26 02:37:27,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:37:27,991 INFO L462 AbstractCegarLoop]: Abstraction has 35 states and 37 transitions. [2019-11-26 02:37:27,991 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-11-26 02:37:27,991 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 37 transitions. [2019-11-26 02:37:27,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2019-11-26 02:37:27,993 INFO L402 BasicCegarLoop]: Found error trace [2019-11-26 02:37:27,993 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2019-11-26 02:37:28,396 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 cvc4 --incremental --print-success --lang smt --rewrite-divk,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:37:28,396 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-26 02:37:28,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-26 02:37:28,396 INFO L82 PathProgramCache]: Analyzing trace with hash 688258629, now seen corresponding path program 3 times [2019-11-26 02:37:28,397 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-11-26 02:37:28,397 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1497051078] [2019-11-26 02:37:28,397 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42e22987-4695-40bb-96b3-55851c46aec3/bin/utaipan/cvc4 Starting monitored process 12 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-26 02:37:28,460 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-11-26 02:37:28,460 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-26 02:37:28,461 INFO L255 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 15 conjunts are in the unsatisfiable core [2019-11-26 02:37:28,463 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:37:28,542 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 6 proven. 23 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2019-11-26 02:37:28,543 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:37:29,395 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 6 proven. 33 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-11-26 02:37:29,396 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1497051078] [2019-11-26 02:37:29,396 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1852231716] [2019-11-26 02:37:29,396 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_42e22987-4695-40bb-96b3-55851c46aec3/bin/utaipan/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:37:29,441 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2019-11-26 02:37:29,441 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-26 02:37:29,444 INFO L255 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 16 conjunts are in the unsatisfiable core [2019-11-26 02:37:29,445 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-26 02:37:29,616 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-11-26 02:37:29,616 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-26 02:37:29,988 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:37:30,162 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:37:30,302 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:37:30,391 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:37:30,473 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:37:30,531 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-26 02:37:30,561 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2019-11-26 02:37:30,562 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 4 imperfect interpolant sequences. [2019-11-26 02:37:30,562 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 15, 12, 17] total 32 [2019-11-26 02:37:30,562 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853755847] [2019-11-26 02:37:30,563 INFO L442 AbstractCegarLoop]: Interpolant automaton has 32 states [2019-11-26 02:37:30,563 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-11-26 02:37:30,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2019-11-26 02:37:30,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=862, Unknown=0, NotChecked=0, Total=992 [2019-11-26 02:37:30,563 INFO L87 Difference]: Start difference. First operand 35 states and 37 transitions. Second operand 32 states. [2019-11-26 02:37:31,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-26 02:37:31,388 INFO L93 Difference]: Finished difference Result 77 states and 102 transitions. [2019-11-26 02:37:31,388 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2019-11-26 02:37:31,388 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 45 [2019-11-26 02:37:31,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-26 02:37:31,389 INFO L225 Difference]: With dead ends: 77 [2019-11-26 02:37:31,389 INFO L226 Difference]: Without dead ends: 0 [2019-11-26 02:37:31,391 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 151 SyntacticMatches, 3 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 487 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=417, Invalid=2133, Unknown=0, NotChecked=0, Total=2550 [2019-11-26 02:37:31,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-26 02:37:31,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-26 02:37:31,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-26 02:37:31,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-26 02:37:31,392 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 45 [2019-11-26 02:37:31,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-26 02:37:31,392 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-26 02:37:31,392 INFO L463 AbstractCegarLoop]: Interpolant automaton has 32 states. [2019-11-26 02:37:31,392 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-26 02:37:31,392 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-26 02:37:31,794 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 cvc4 --incremental --print-success --lang smt --rewrite-divk,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-26 02:37:31,798 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-26 02:37:31,885 INFO L440 ceAbstractionStarter]: At program point L14(line 14) the Hoare annotation is: (and (= |id2_#in~x| id2_~x) (not (= |id2_#in~x| (_ bv0 32)))) [2019-11-26 02:37:31,886 INFO L444 ceAbstractionStarter]: For program point L13(line 13) no Hoare annotation was computed. [2019-11-26 02:37:31,886 INFO L444 ceAbstractionStarter]: For program point L14-1(line 14) no Hoare annotation was computed. [2019-11-26 02:37:31,886 INFO L444 ceAbstractionStarter]: For program point id2EXIT(lines 12 15) no Hoare annotation was computed. [2019-11-26 02:37:31,886 INFO L447 ceAbstractionStarter]: At program point id2ENTRY(lines 12 15) the Hoare annotation is: true [2019-11-26 02:37:31,886 INFO L444 ceAbstractionStarter]: For program point id2FINAL(lines 12 15) no Hoare annotation was computed. [2019-11-26 02:37:31,886 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-26 02:37:31,886 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-26 02:37:31,886 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-26 02:37:31,886 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 21) no Hoare annotation was computed. [2019-11-26 02:37:31,886 INFO L444 ceAbstractionStarter]: For program point L21(line 21) no Hoare annotation was computed. [2019-11-26 02:37:31,887 INFO L444 ceAbstractionStarter]: For program point L20(lines 20 22) no Hoare annotation was computed. [2019-11-26 02:37:31,887 INFO L440 ceAbstractionStarter]: At program point L19(line 19) the Hoare annotation is: (= (bvadd ULTIMATE.start_main_~input~0 (_ bv4294967291 32)) (_ bv0 32)) [2019-11-26 02:37:31,887 INFO L444 ceAbstractionStarter]: For program point L19-1(line 19) no Hoare annotation was computed. [2019-11-26 02:37:31,887 INFO L444 ceAbstractionStarter]: For program point L17(lines 17 23) no Hoare annotation was computed. [2019-11-26 02:37:31,887 INFO L444 ceAbstractionStarter]: For program point idFINAL(lines 7 10) no Hoare annotation was computed. [2019-11-26 02:37:31,887 INFO L444 ceAbstractionStarter]: For program point idEXIT(lines 7 10) no Hoare annotation was computed. [2019-11-26 02:37:31,887 INFO L440 ceAbstractionStarter]: At program point L9(line 9) the Hoare annotation is: (= id_~x |id_#in~x|) [2019-11-26 02:37:31,887 INFO L444 ceAbstractionStarter]: For program point L8(line 8) no Hoare annotation was computed. [2019-11-26 02:37:31,887 INFO L444 ceAbstractionStarter]: For program point L9-1(line 9) no Hoare annotation was computed. [2019-11-26 02:37:31,887 INFO L447 ceAbstractionStarter]: At program point idENTRY(lines 7 10) the Hoare annotation is: true [2019-11-26 02:37:31,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 02:37:31 BoogieIcfgContainer [2019-11-26 02:37:31,890 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-26 02:37:31,890 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-26 02:37:31,890 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-26 02:37:31,891 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-26 02:37:31,891 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 02:37:20" (3/4) ... [2019-11-26 02:37:31,894 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-11-26 02:37:31,900 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure id2 [2019-11-26 02:37:31,900 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure id [2019-11-26 02:37:31,904 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2019-11-26 02:37:31,904 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-11-26 02:37:31,941 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_42e22987-4695-40bb-96b3-55851c46aec3/bin/utaipan/witness.graphml [2019-11-26 02:37:31,941 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-26 02:37:31,943 INFO L168 Benchmark]: Toolchain (without parser) took 11868.22 ms. Allocated memory was 1.0 GB in the beginning and 1.4 GB in the end (delta: 354.4 MB). Free memory was 959.1 MB in the beginning and 1.3 GB in the end (delta: -312.2 MB). Peak memory consumption was 42.2 MB. Max. memory is 11.5 GB. [2019-11-26 02:37:31,943 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 987.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:37:31,943 INFO L168 Benchmark]: CACSL2BoogieTranslator took 265.16 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 947.0 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. [2019-11-26 02:37:31,944 INFO L168 Benchmark]: Boogie Procedure Inliner took 111.16 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 186.6 MB). Free memory was 947.0 MB in the beginning and 1.2 GB in the end (delta: -236.8 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. [2019-11-26 02:37:31,944 INFO L168 Benchmark]: Boogie Preprocessor took 20.40 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:37:31,945 INFO L168 Benchmark]: RCFGBuilder took 213.69 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: 18.5 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. [2019-11-26 02:37:31,945 INFO L168 Benchmark]: TraceAbstraction took 11198.13 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 167.8 MB). Free memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: -106.1 MB). Peak memory consumption was 61.7 MB. Max. memory is 11.5 GB. [2019-11-26 02:37:31,945 INFO L168 Benchmark]: Witness Printer took 50.78 ms. Allocated memory is still 1.4 GB. Free memory is still 1.3 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-26 02:37:31,947 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 1.0 GB. Free memory is still 987.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 265.16 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 947.0 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 111.16 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 186.6 MB). Free memory was 947.0 MB in the beginning and 1.2 GB in the end (delta: -236.8 MB). Peak memory consumption was 9.7 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 20.40 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 213.69 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: 18.5 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. * TraceAbstraction took 11198.13 ms. Allocated memory was 1.2 GB in the beginning and 1.4 GB in the end (delta: 167.8 MB). Free memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: -106.1 MB). Peak memory consumption was 61.7 MB. Max. memory is 11.5 GB. * Witness Printer took 50.78 ms. Allocated memory is still 1.4 GB. Free memory is still 1.3 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 21]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 21 locations, 1 error locations. Result: SAFE, OverallTime: 11.1s, OverallIterations: 7, TraceHistogramMax: 4, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 145 SDtfs, 169 SDslu, 1150 SDs, 0 SdLazy, 1026 SolverSat, 65 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 726 GetRequests, 582 SyntacticMatches, 18 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 563 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 40 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 13 PreInvPairs, 13 NumberOfFragments, 18 HoareAnnotationTreeSize, 13 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 67 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 6.2s InterpolantComputationTime, 354 NumberOfCodeBlocks, 354 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 684 ConstructedInterpolants, 0 QuantifiedInterpolants, 79876 SizeOfPredicates, 51 NumberOfNonLiveVariables, 496 ConjunctsInSsa, 130 ConjunctsInUnsatCore, 24 InterpolantComputations, 4 PerfectInterpolantSequences, 185/456 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 correct! Received shutdown request...