./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/array-memsafety/openbsd_cbzero-alloca-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_8f55976d-895b-4bc0-aeed-332580b67354/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_8f55976d-895b-4bc0-aeed-332580b67354/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_8f55976d-895b-4bc0-aeed-332580b67354/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_8f55976d-895b-4bc0-aeed-332580b67354/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/array-memsafety/openbsd_cbzero-alloca-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_8f55976d-895b-4bc0-aeed-332580b67354/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_8f55976d-895b-4bc0-aeed-332580b67354/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 822411a57a10ce043cb0121fce52bdc7e9506783 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 20:41:44,109 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 20:41:44,111 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 20:41:44,118 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 20:41:44,118 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 20:41:44,119 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 20:41:44,120 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 20:41:44,121 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 20:41:44,123 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 20:41:44,123 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 20:41:44,124 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 20:41:44,125 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 20:41:44,125 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 20:41:44,125 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 20:41:44,126 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 20:41:44,127 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 20:41:44,127 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 20:41:44,128 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 20:41:44,130 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 20:41:44,131 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 20:41:44,132 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 20:41:44,133 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 20:41:44,133 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 20:41:44,134 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 20:41:44,136 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 20:41:44,136 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 20:41:44,136 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 20:41:44,136 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 20:41:44,137 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 20:41:44,137 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 20:41:44,137 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 20:41:44,138 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 20:41:44,138 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 20:41:44,139 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 20:41:44,139 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 20:41:44,139 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 20:41:44,140 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 20:41:44,140 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 20:41:44,140 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 20:41:44,140 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 20:41:44,141 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 20:41:44,141 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_8f55976d-895b-4bc0-aeed-332580b67354/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2019-12-07 20:41:44,151 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 20:41:44,151 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 20:41:44,152 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 20:41:44,152 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 20:41:44,152 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 20:41:44,152 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 20:41:44,152 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 20:41:44,152 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 20:41:44,152 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 20:41:44,152 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 20:41:44,153 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 20:41:44,153 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 20:41:44,153 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 20:41:44,153 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 20:41:44,153 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 20:41:44,153 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 20:41:44,153 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 20:41:44,154 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 20:41:44,154 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 20:41:44,154 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 20:41:44,154 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 20:41:44,154 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 20:41:44,154 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 20:41:44,154 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-12-07 20:41:44,154 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-12-07 20:41:44,155 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-12-07 20:41:44,155 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 20:41:44,155 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 20:41:44,155 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 20:41:44,155 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 20:41:44,155 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 20:41:44,155 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 20:41:44,155 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 20:41:44,156 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 20:41:44,156 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 20:41:44,156 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 20:41:44,156 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 20:41:44,156 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 20:41:44,156 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 20:41:44,156 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 20:41:44,156 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_8f55976d-895b-4bc0-aeed-332580b67354/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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) 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 -> 822411a57a10ce043cb0121fce52bdc7e9506783 [2019-12-07 20:41:44,259 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 20:41:44,270 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 20:41:44,273 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 20:41:44,274 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 20:41:44,274 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 20:41:44,275 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_8f55976d-895b-4bc0-aeed-332580b67354/bin/utaipan/../../sv-benchmarks/c/array-memsafety/openbsd_cbzero-alloca-2.i [2019-12-07 20:41:44,314 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8f55976d-895b-4bc0-aeed-332580b67354/bin/utaipan/data/b29e3bc95/90d9ae00621a42b9a89077e7e740b711/FLAG6659378e8 [2019-12-07 20:41:44,696 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 20:41:44,696 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_8f55976d-895b-4bc0-aeed-332580b67354/sv-benchmarks/c/array-memsafety/openbsd_cbzero-alloca-2.i [2019-12-07 20:41:44,706 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_8f55976d-895b-4bc0-aeed-332580b67354/bin/utaipan/data/b29e3bc95/90d9ae00621a42b9a89077e7e740b711/FLAG6659378e8 [2019-12-07 20:41:44,714 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_8f55976d-895b-4bc0-aeed-332580b67354/bin/utaipan/data/b29e3bc95/90d9ae00621a42b9a89077e7e740b711 [2019-12-07 20:41:44,716 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 20:41:44,717 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 20:41:44,718 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 20:41:44,718 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 20:41:44,720 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 20:41:44,720 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 08:41:44" (1/1) ... [2019-12-07 20:41:44,722 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22efc849 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:41:44, skipping insertion in model container [2019-12-07 20:41:44,722 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 08:41:44" (1/1) ... [2019-12-07 20:41:44,727 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 20:41:44,751 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 20:41:44,964 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 20:41:44,970 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 20:41:45,002 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 20:41:45,034 INFO L208 MainTranslator]: Completed translation [2019-12-07 20:41:45,035 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:41:45 WrapperNode [2019-12-07 20:41:45,035 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 20:41:45,035 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 20:41:45,035 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 20:41:45,035 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 20:41:45,041 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:41:45" (1/1) ... [2019-12-07 20:41:45,052 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:41:45" (1/1) ... [2019-12-07 20:41:45,065 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 20:41:45,066 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 20:41:45,066 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 20:41:45,066 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 20:41:45,071 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:41:45" (1/1) ... [2019-12-07 20:41:45,071 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:41:45" (1/1) ... [2019-12-07 20:41:45,074 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:41:45" (1/1) ... [2019-12-07 20:41:45,074 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:41:45" (1/1) ... [2019-12-07 20:41:45,078 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:41:45" (1/1) ... [2019-12-07 20:41:45,081 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:41:45" (1/1) ... [2019-12-07 20:41:45,082 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:41:45" (1/1) ... [2019-12-07 20:41:45,084 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 20:41:45,084 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 20:41:45,084 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 20:41:45,085 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 20:41:45,085 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:41:45" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8f55976d-895b-4bc0-aeed-332580b67354/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 [2019-12-07 20:41:45,125 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-12-07 20:41:45,126 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 20:41:45,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 20:41:45,126 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 20:41:45,126 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 20:41:45,302 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 20:41:45,303 INFO L287 CfgBuilder]: Removed 7 assume(true) statements. [2019-12-07 20:41:45,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 08:41:45 BoogieIcfgContainer [2019-12-07 20:41:45,303 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 20:41:45,304 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 20:41:45,304 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 20:41:45,306 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 20:41:45,306 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 08:41:44" (1/3) ... [2019-12-07 20:41:45,307 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f47bebe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 08:41:45, skipping insertion in model container [2019-12-07 20:41:45,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:41:45" (2/3) ... [2019-12-07 20:41:45,307 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f47bebe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 08:41:45, skipping insertion in model container [2019-12-07 20:41:45,307 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 08:41:45" (3/3) ... [2019-12-07 20:41:45,308 INFO L109 eAbstractionObserver]: Analyzing ICFG openbsd_cbzero-alloca-2.i [2019-12-07 20:41:45,315 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 20:41:45,319 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2019-12-07 20:41:45,326 INFO L249 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2019-12-07 20:41:45,338 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 20:41:45,338 INFO L374 AbstractCegarLoop]: Hoare is false [2019-12-07 20:41:45,338 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 20:41:45,338 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 20:41:45,338 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 20:41:45,338 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 20:41:45,339 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 20:41:45,339 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 20:41:45,347 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2019-12-07 20:41:45,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2019-12-07 20:41:45,352 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:41:45,352 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1] [2019-12-07 20:41:45,352 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK]=== [2019-12-07 20:41:45,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:41:45,356 INFO L82 PathProgramCache]: Analyzing trace with hash 76485, now seen corresponding path program 1 times [2019-12-07 20:41:45,362 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 20:41:45,362 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223341190] [2019-12-07 20:41:45,362 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 20:41:45,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 20:41:45,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 20:41:45,451 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223341190] [2019-12-07 20:41:45,451 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 20:41:45,452 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2019-12-07 20:41:45,452 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896359442] [2019-12-07 20:41:45,455 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 20:41:45,455 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 20:41:45,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 20:41:45,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 20:41:45,466 INFO L87 Difference]: Start difference. First operand 11 states. Second operand 3 states. [2019-12-07 20:41:45,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 20:41:45,488 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2019-12-07 20:41:45,488 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 20:41:45,489 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2019-12-07 20:41:45,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 20:41:45,495 INFO L225 Difference]: With dead ends: 12 [2019-12-07 20:41:45,495 INFO L226 Difference]: Without dead ends: 10 [2019-12-07 20:41:45,496 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 20:41:45,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2019-12-07 20:41:45,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2019-12-07 20:41:45,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2019-12-07 20:41:45,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2019-12-07 20:41:45,516 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 3 [2019-12-07 20:41:45,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 20:41:45,517 INFO L462 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2019-12-07 20:41:45,517 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 20:41:45,517 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2019-12-07 20:41:45,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-12-07 20:41:45,517 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:41:45,517 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-12-07 20:41:45,517 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK]=== [2019-12-07 20:41:45,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:41:45,518 INFO L82 PathProgramCache]: Analyzing trace with hash 73547189, now seen corresponding path program 1 times [2019-12-07 20:41:45,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 20:41:45,518 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256681517] [2019-12-07 20:41:45,518 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 20:41:45,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 20:41:45,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 20:41:45,556 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256681517] [2019-12-07 20:41:45,556 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 20:41:45,556 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 20:41:45,557 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241281740] [2019-12-07 20:41:45,558 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 20:41:45,558 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 20:41:45,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 20:41:45,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 20:41:45,558 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 4 states. [2019-12-07 20:41:45,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 20:41:45,585 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2019-12-07 20:41:45,586 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 20:41:45,586 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2019-12-07 20:41:45,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 20:41:45,586 INFO L225 Difference]: With dead ends: 9 [2019-12-07 20:41:45,587 INFO L226 Difference]: Without dead ends: 9 [2019-12-07 20:41:45,587 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 20:41:45,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2019-12-07 20:41:45,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2019-12-07 20:41:45,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-12-07 20:41:45,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2019-12-07 20:41:45,589 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2019-12-07 20:41:45,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 20:41:45,589 INFO L462 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2019-12-07 20:41:45,589 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 20:41:45,589 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2019-12-07 20:41:45,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-12-07 20:41:45,590 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:41:45,590 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-12-07 20:41:45,590 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK]=== [2019-12-07 20:41:45,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:41:45,590 INFO L82 PathProgramCache]: Analyzing trace with hash 73547190, now seen corresponding path program 1 times [2019-12-07 20:41:45,590 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 20:41:45,590 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711448070] [2019-12-07 20:41:45,590 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 20:41:45,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 20:41:45,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 20:41:45,653 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711448070] [2019-12-07 20:41:45,653 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 20:41:45,654 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-12-07 20:41:45,654 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653270163] [2019-12-07 20:41:45,654 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 20:41:45,654 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 20:41:45,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 20:41:45,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-07 20:41:45,654 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 5 states. [2019-12-07 20:41:45,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 20:41:45,680 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2019-12-07 20:41:45,680 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 20:41:45,680 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 5 [2019-12-07 20:41:45,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 20:41:45,680 INFO L225 Difference]: With dead ends: 15 [2019-12-07 20:41:45,680 INFO L226 Difference]: Without dead ends: 15 [2019-12-07 20:41:45,681 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-12-07 20:41:45,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-12-07 20:41:45,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 12. [2019-12-07 20:41:45,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-12-07 20:41:45,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2019-12-07 20:41:45,683 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 5 [2019-12-07 20:41:45,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 20:41:45,683 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2019-12-07 20:41:45,683 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 20:41:45,683 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2019-12-07 20:41:45,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-12-07 20:41:45,684 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:41:45,684 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-12-07 20:41:45,684 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK]=== [2019-12-07 20:41:45,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:41:45,684 INFO L82 PathProgramCache]: Analyzing trace with hash -2015006103, now seen corresponding path program 1 times [2019-12-07 20:41:45,684 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 20:41:45,684 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943718286] [2019-12-07 20:41:45,685 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 20:41:45,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 20:41:45,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 20:41:45,750 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943718286] [2019-12-07 20:41:45,750 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 20:41:45,750 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-12-07 20:41:45,750 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908691307] [2019-12-07 20:41:45,750 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-12-07 20:41:45,750 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 20:41:45,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-12-07 20:41:45,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-12-07 20:41:45,751 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand 5 states. [2019-12-07 20:41:45,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 20:41:45,774 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2019-12-07 20:41:45,774 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 20:41:45,774 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2019-12-07 20:41:45,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 20:41:45,775 INFO L225 Difference]: With dead ends: 12 [2019-12-07 20:41:45,775 INFO L226 Difference]: Without dead ends: 12 [2019-12-07 20:41:45,775 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-12-07 20:41:45,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-12-07 20:41:45,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-12-07 20:41:45,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-12-07 20:41:45,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2019-12-07 20:41:45,777 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 6 [2019-12-07 20:41:45,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 20:41:45,777 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2019-12-07 20:41:45,777 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-12-07 20:41:45,777 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2019-12-07 20:41:45,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-07 20:41:45,777 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:41:45,778 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1] [2019-12-07 20:41:45,778 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK]=== [2019-12-07 20:41:45,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:41:45,778 INFO L82 PathProgramCache]: Analyzing trace with hash 611367033, now seen corresponding path program 1 times [2019-12-07 20:41:45,778 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 20:41:45,778 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465610882] [2019-12-07 20:41:45,778 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 20:41:45,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 20:41:45,953 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 20:41:45,953 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465610882] [2019-12-07 20:41:45,953 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183361528] [2019-12-07 20:41:45,953 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8f55976d-895b-4bc0-aeed-332580b67354/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 [2019-12-07 20:41:45,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 20:41:45,990 WARN L262 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 40 conjunts are in the unsatisfiable core [2019-12-07 20:41:45,994 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 20:41:46,042 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-12-07 20:41:46,042 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 20:41:46,049 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 20:41:46,049 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-12-07 20:41:46,050 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:16, output treesize:12 [2019-12-07 20:41:46,194 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 20:41:46,194 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 20:41:46,311 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-12-07 20:41:46,408 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 20:41:46,409 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [674186913] [2019-12-07 20:41:46,425 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2019-12-07 20:41:46,425 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 20:41:46,429 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-12-07 20:41:46,433 INFO L176 IcfgInterpreter]: Starting interpretation [2019-12-07 20:41:46,434 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-12-07 20:41:46,825 INFO L180 IcfgInterpreter]: Interpretation finished [2019-12-07 20:41:47,218 WARN L192 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 93 [2019-12-07 20:41:47,409 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 20:41:47,409 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-12-07 20:41:47,410 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 20 [2019-12-07 20:41:47,410 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679338376] [2019-12-07 20:41:47,410 INFO L442 AbstractCegarLoop]: Interpolant automaton has 22 states [2019-12-07 20:41:47,410 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 20:41:47,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2019-12-07 20:41:47,411 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=617, Unknown=0, NotChecked=0, Total=702 [2019-12-07 20:41:47,412 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 22 states. [2019-12-07 20:41:47,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 20:41:47,703 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2019-12-07 20:41:47,703 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-12-07 20:41:47,703 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 8 [2019-12-07 20:41:47,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 20:41:47,704 INFO L225 Difference]: With dead ends: 15 [2019-12-07 20:41:47,704 INFO L226 Difference]: Without dead ends: 15 [2019-12-07 20:41:47,704 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=139, Invalid=917, Unknown=0, NotChecked=0, Total=1056 [2019-12-07 20:41:47,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-12-07 20:41:47,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-12-07 20:41:47,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-12-07 20:41:47,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2019-12-07 20:41:47,706 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 8 [2019-12-07 20:41:47,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 20:41:47,706 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2019-12-07 20:41:47,706 INFO L463 AbstractCegarLoop]: Interpolant automaton has 22 states. [2019-12-07 20:41:47,707 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2019-12-07 20:41:47,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-07 20:41:47,707 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:41:47,707 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 20:41:47,908 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 20:41:47,908 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK]=== [2019-12-07 20:41:47,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:41:47,909 INFO L82 PathProgramCache]: Analyzing trace with hash 1772507142, now seen corresponding path program 1 times [2019-12-07 20:41:47,909 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 20:41:47,910 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1363676523] [2019-12-07 20:41:47,911 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 20:41:47,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 20:41:47,982 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-12-07 20:41:47,982 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1363676523] [2019-12-07 20:41:47,982 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-12-07 20:41:47,983 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-12-07 20:41:47,983 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271694609] [2019-12-07 20:41:47,983 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 20:41:47,983 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 20:41:47,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 20:41:47,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 20:41:47,983 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 4 states. [2019-12-07 20:41:47,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 20:41:47,991 INFO L93 Difference]: Finished difference Result 14 states and 15 transitions. [2019-12-07 20:41:47,991 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 20:41:47,991 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-12-07 20:41:47,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 20:41:47,992 INFO L225 Difference]: With dead ends: 14 [2019-12-07 20:41:47,992 INFO L226 Difference]: Without dead ends: 12 [2019-12-07 20:41:47,992 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 20:41:47,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2019-12-07 20:41:47,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2019-12-07 20:41:47,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2019-12-07 20:41:47,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2019-12-07 20:41:47,993 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 9 [2019-12-07 20:41:47,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 20:41:47,994 INFO L462 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2019-12-07 20:41:47,994 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 20:41:47,994 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2019-12-07 20:41:47,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-12-07 20:41:47,994 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:41:47,994 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1] [2019-12-07 20:41:47,994 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK]=== [2019-12-07 20:41:47,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:41:47,994 INFO L82 PathProgramCache]: Analyzing trace with hash -1720671530, now seen corresponding path program 2 times [2019-12-07 20:41:47,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-12-07 20:41:47,995 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020523431] [2019-12-07 20:41:47,995 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-12-07 20:41:48,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 20:41:48,191 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 20:41:48,192 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020523431] [2019-12-07 20:41:48,192 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1188899635] [2019-12-07 20:41:48,192 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_8f55976d-895b-4bc0-aeed-332580b67354/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 20:41:48,231 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-12-07 20:41:48,231 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-12-07 20:41:48,233 WARN L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 51 conjunts are in the unsatisfiable core [2019-12-07 20:41:48,234 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 20:41:48,446 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 20:41:48,446 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 20:41:48,931 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 20:41:48,932 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [523328388] [2019-12-07 20:41:48,934 INFO L159 IcfgInterpreter]: Started Sifa with 6 locations of interest [2019-12-07 20:41:48,935 INFO L166 IcfgInterpreter]: Building call graph [2019-12-07 20:41:48,935 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-12-07 20:41:48,936 INFO L176 IcfgInterpreter]: Starting interpretation [2019-12-07 20:41:48,936 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-12-07 20:41:49,322 INFO L180 IcfgInterpreter]: Interpretation finished [2019-12-07 20:41:49,827 WARN L192 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 93 [2019-12-07 20:41:50,065 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-12-07 20:41:50,066 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-12-07 20:41:50,066 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 26 [2019-12-07 20:41:50,066 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832278303] [2019-12-07 20:41:50,066 INFO L442 AbstractCegarLoop]: Interpolant automaton has 28 states [2019-12-07 20:41:50,066 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-12-07 20:41:50,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2019-12-07 20:41:50,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=942, Unknown=0, NotChecked=0, Total=1056 [2019-12-07 20:41:50,067 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 28 states. [2019-12-07 20:41:50,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 20:41:50,891 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2019-12-07 20:41:50,891 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2019-12-07 20:41:50,891 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 11 [2019-12-07 20:41:50,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 20:41:50,892 INFO L225 Difference]: With dead ends: 14 [2019-12-07 20:41:50,892 INFO L226 Difference]: Without dead ends: 0 [2019-12-07 20:41:50,893 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=245, Invalid=1735, Unknown=0, NotChecked=0, Total=1980 [2019-12-07 20:41:50,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-12-07 20:41:50,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-12-07 20:41:50,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-12-07 20:41:50,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-12-07 20:41:50,893 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2019-12-07 20:41:50,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 20:41:50,893 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-12-07 20:41:50,893 INFO L463 AbstractCegarLoop]: Interpolant automaton has 28 states. [2019-12-07 20:41:50,893 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-12-07 20:41:50,893 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-12-07 20:41:51,094 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-12-07 20:41:51,105 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 08:41:51 BoogieIcfgContainer [2019-12-07 20:41:51,105 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 20:41:51,106 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 20:41:51,106 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 20:41:51,106 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 20:41:51,107 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 08:41:45" (3/4) ... [2019-12-07 20:41:51,114 INFO L137 WitnessPrinter]: Generating witness for correct program [2019-12-07 20:41:51,124 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2019-12-07 20:41:51,124 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2019-12-07 20:41:51,124 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2019-12-07 20:41:51,151 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_8f55976d-895b-4bc0-aeed-332580b67354/bin/utaipan/witness.graphml [2019-12-07 20:41:51,151 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 20:41:51,152 INFO L168 Benchmark]: Toolchain (without parser) took 6435.43 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 144.7 MB). Free memory was 946.1 MB in the beginning and 962.0 MB in the end (delta: -15.9 MB). Peak memory consumption was 128.8 MB. Max. memory is 11.5 GB. [2019-12-07 20:41:51,153 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 960.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 20:41:51,153 INFO L168 Benchmark]: CACSL2BoogieTranslator took 317.32 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 93.3 MB). Free memory was 940.7 MB in the beginning and 1.1 GB in the end (delta: -136.6 MB). Peak memory consumption was 19.3 MB. Max. memory is 11.5 GB. [2019-12-07 20:41:51,153 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.25 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 20:41:51,153 INFO L168 Benchmark]: Boogie Preprocessor took 18.51 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2019-12-07 20:41:51,154 INFO L168 Benchmark]: RCFGBuilder took 219.29 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. [2019-12-07 20:41:51,154 INFO L168 Benchmark]: TraceAbstraction took 5801.01 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 51.4 MB). Free memory was 1.0 GB in the beginning and 964.1 MB in the end (delta: 85.5 MB). Peak memory consumption was 136.9 MB. Max. memory is 11.5 GB. [2019-12-07 20:41:51,154 INFO L168 Benchmark]: Witness Printer took 45.61 ms. Allocated memory is still 1.2 GB. Free memory was 964.1 MB in the beginning and 962.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 11.5 GB. [2019-12-07 20:41:51,155 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 960.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 317.32 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 93.3 MB). Free memory was 940.7 MB in the beginning and 1.1 GB in the end (delta: -136.6 MB). Peak memory consumption was 19.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 30.25 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.51 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 219.29 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 22.4 MB). Peak memory consumption was 22.4 MB. Max. memory is 11.5 GB. * TraceAbstraction took 5801.01 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 51.4 MB). Free memory was 1.0 GB in the beginning and 964.1 MB in the end (delta: 85.5 MB). Peak memory consumption was 136.9 MB. Max. memory is 11.5 GB. * Witness Printer took 45.61 ms. Allocated memory is still 1.2 GB. Free memory was 964.1 MB in the beginning and 962.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 517]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 517]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 519]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 3 error locations. Result: SAFE, OverallTime: 5.7s, OverallIterations: 7, TraceHistogramMax: 3, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 37 SDtfs, 45 SDslu, 85 SDs, 0 SdLazy, 295 SolverSat, 61 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 106 GetRequests, 13 SyntacticMatches, 3 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 374 ImplicationChecksByTransitivity, 3.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 66 NumberOfCodeBlocks, 66 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 74 ConstructedInterpolants, 2 QuantifiedInterpolants, 9361 SizeOfPredicates, 32 NumberOfNonLiveVariables, 170 ConjunctsInSsa, 91 ConjunctsInUnsatCore, 11 InterpolantComputations, 5 PerfectInterpolantSequences, 2/38 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...