./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-simple/nested_1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f16b51af-a13d-4631-842e-8fd54ef4f765/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f16b51af-a13d-4631-842e-8fd54ef4f765/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f16b51af-a13d-4631-842e-8fd54ef4f765/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f16b51af-a13d-4631-842e-8fd54ef4f765/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-simple/nested_1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f16b51af-a13d-4631-842e-8fd54ef4f765/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f16b51af-a13d-4631-842e-8fd54ef4f765/bin/utaipan-WLngWcDbfI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 93aa307414725b3a49c1b13f393768ab9b3a7f92 ................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:23:22,086 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:23:22,088 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:23:22,125 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:23:22,126 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:23:22,132 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:23:22,134 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:23:22,138 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:23:22,141 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:23:22,149 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:23:22,150 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:23:22,152 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:23:22,152 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:23:22,153 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:23:22,154 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:23:22,155 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:23:22,156 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:23:22,158 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:23:22,160 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:23:22,162 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:23:22,165 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:23:22,166 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:23:22,168 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:23:22,169 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:23:22,173 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:23:22,173 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:23:22,174 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:23:22,175 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:23:22,176 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:23:22,177 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:23:22,178 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:23:22,179 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:23:22,180 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:23:22,181 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:23:22,183 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:23:22,184 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:23:22,185 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:23:22,185 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:23:22,186 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:23:22,187 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:23:22,188 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:23:22,189 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f16b51af-a13d-4631-842e-8fd54ef4f765/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:23:22,216 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:23:22,216 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:23:22,217 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:23:22,218 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:23:22,218 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:23:22,218 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:23:22,219 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:23:22,219 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:23:22,219 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:23:22,219 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:23:22,220 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:23:22,220 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:23:22,220 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:23:22,221 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:23:22,221 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:23:22,222 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:23:22,222 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:23:22,222 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:23:22,223 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:23:22,223 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:23:22,223 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:23:22,223 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:23:22,224 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:23:22,224 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:23:22,224 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:23:22,224 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:23:22,225 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:23:22,225 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:23:22,225 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:23:22,225 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:23:22,226 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:23:22,226 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:23:22,226 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:23:22,227 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:23:22,227 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:23:22,227 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:23:22,227 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:23:22,227 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:23:22,228 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:23:22,228 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f16b51af-a13d-4631-842e-8fd54ef4f765/bin/utaipan-WLngWcDbfI/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f16b51af-a13d-4631-842e-8fd54ef4f765/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 93aa307414725b3a49c1b13f393768ab9b3a7f92 [2021-10-11 02:23:22,475 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:23:22,499 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:23:22,502 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:23:22,503 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:23:22,506 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:23:22,507 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f16b51af-a13d-4631-842e-8fd54ef4f765/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/loop-simple/nested_1.c [2021-10-11 02:23:22,593 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f16b51af-a13d-4631-842e-8fd54ef4f765/bin/utaipan-WLngWcDbfI/data/9e05720fd/06bc4b853991462ba8317776806a8c92/FLAGb8205bd34 [2021-10-11 02:23:23,072 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:23:23,074 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f16b51af-a13d-4631-842e-8fd54ef4f765/sv-benchmarks/c/loop-simple/nested_1.c [2021-10-11 02:23:23,088 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f16b51af-a13d-4631-842e-8fd54ef4f765/bin/utaipan-WLngWcDbfI/data/9e05720fd/06bc4b853991462ba8317776806a8c92/FLAGb8205bd34 [2021-10-11 02:23:23,443 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f16b51af-a13d-4631-842e-8fd54ef4f765/bin/utaipan-WLngWcDbfI/data/9e05720fd/06bc4b853991462ba8317776806a8c92 [2021-10-11 02:23:23,446 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:23:23,448 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:23:23,453 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:23:23,454 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:23:23,458 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:23:23,459 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:23:23" (1/1) ... [2021-10-11 02:23:23,461 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4289ca21 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:23, skipping insertion in model container [2021-10-11 02:23:23,462 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:23:23" (1/1) ... [2021-10-11 02:23:23,471 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:23:23,486 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:23:23,687 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f16b51af-a13d-4631-842e-8fd54ef4f765/sv-benchmarks/c/loop-simple/nested_1.c[676,689] [2021-10-11 02:23:23,698 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:23:23,710 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:23:23,722 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f16b51af-a13d-4631-842e-8fd54ef4f765/sv-benchmarks/c/loop-simple/nested_1.c[676,689] [2021-10-11 02:23:23,723 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:23:23,737 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:23:23,738 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:23 WrapperNode [2021-10-11 02:23:23,738 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:23:23,740 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:23:23,740 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:23:23,740 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:23:23,764 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:23" (1/1) ... [2021-10-11 02:23:23,772 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:23" (1/1) ... [2021-10-11 02:23:23,791 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:23:23,792 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:23:23,793 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:23:23,793 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:23:23,809 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:23" (1/1) ... [2021-10-11 02:23:23,814 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:23" (1/1) ... [2021-10-11 02:23:23,817 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:23" (1/1) ... [2021-10-11 02:23:23,818 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:23" (1/1) ... [2021-10-11 02:23:23,825 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:23" (1/1) ... [2021-10-11 02:23:23,831 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:23" (1/1) ... [2021-10-11 02:23:23,833 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:23" (1/1) ... [2021-10-11 02:23:23,842 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:23:23,843 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:23:23,844 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:23:23,845 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:23:23,846 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:23" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f16b51af-a13d-4631-842e-8fd54ef4f765/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:23:23,964 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:23:23,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:23:23,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:23:23,965 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:23:24,269 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:23:24,269 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-11 02:23:24,271 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:23:24 BoogieIcfgContainer [2021-10-11 02:23:24,272 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:23:24,283 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:23:24,291 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:23:24,295 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:23:24,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:23:23" (1/3) ... [2021-10-11 02:23:24,304 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@82e82ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:23:24, skipping insertion in model container [2021-10-11 02:23:24,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:23:23" (2/3) ... [2021-10-11 02:23:24,305 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@82e82ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:23:24, skipping insertion in model container [2021-10-11 02:23:24,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:23:24" (3/3) ... [2021-10-11 02:23:24,307 INFO L111 eAbstractionObserver]: Analyzing ICFG nested_1.c [2021-10-11 02:23:24,323 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:23:24,326 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:23:24,341 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:23:24,382 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:23:24,383 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:23:24,383 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:23:24,383 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:23:24,383 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:23:24,383 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:23:24,384 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:23:24,384 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:23:24,403 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states. [2021-10-11 02:23:24,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-10-11 02:23:24,408 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:24,409 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-10-11 02:23:24,409 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:24,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:24,416 INFO L82 PathProgramCache]: Analyzing trace with hash 1788998, now seen corresponding path program 1 times [2021-10-11 02:23:24,425 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:24,426 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583513572] [2021-10-11 02:23:24,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:24,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:24,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:23:24,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583513572] [2021-10-11 02:23:24,588 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:24,588 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:23:24,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938309081] [2021-10-11 02:23:24,593 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:23:24,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:24,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:23:24,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:24,611 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 3 states. [2021-10-11 02:23:24,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:24,640 INFO L93 Difference]: Finished difference Result 13 states and 15 transitions. [2021-10-11 02:23:24,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:23:24,642 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2021-10-11 02:23:24,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:24,653 INFO L225 Difference]: With dead ends: 13 [2021-10-11 02:23:24,653 INFO L226 Difference]: Without dead ends: 6 [2021-10-11 02:23:24,657 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:23:24,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states. [2021-10-11 02:23:24,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 6. [2021-10-11 02:23:24,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-10-11 02:23:24,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 6 transitions. [2021-10-11 02:23:24,695 INFO L78 Accepts]: Start accepts. Automaton has 6 states and 6 transitions. Word has length 4 [2021-10-11 02:23:24,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:24,696 INFO L481 AbstractCegarLoop]: Abstraction has 6 states and 6 transitions. [2021-10-11 02:23:24,696 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:23:24,697 INFO L276 IsEmpty]: Start isEmpty. Operand 6 states and 6 transitions. [2021-10-11 02:23:24,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-11 02:23:24,697 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:24,697 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-11 02:23:24,698 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:23:24,698 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:24,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:24,700 INFO L82 PathProgramCache]: Analyzing trace with hash 55383007, now seen corresponding path program 1 times [2021-10-11 02:23:24,700 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:24,701 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001466476] [2021-10-11 02:23:24,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:24,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:24,750 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:23:24,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001466476] [2021-10-11 02:23:24,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [854301281] [2021-10-11 02:23:24,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f16b51af-a13d-4631-842e-8fd54ef4f765/bin/utaipan-WLngWcDbfI/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 [2021-10-11 02:23:24,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:24,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-11 02:23:24,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:23:24,926 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:23:24,927 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:23:24,952 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:23:24,953 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1151341725] [2021-10-11 02:23:24,976 INFO L159 IcfgInterpreter]: Started Sifa with 5 locations of interest [2021-10-11 02:23:24,977 INFO L166 IcfgInterpreter]: Building call graph [2021-10-11 02:23:24,981 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-10-11 02:23:24,987 INFO L176 IcfgInterpreter]: Starting interpretation [2021-10-11 02:23:24,987 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-10-11 02:23:25,497 INFO L180 IcfgInterpreter]: Interpretation finished [2021-10-11 02:23:25,791 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 02:23:25,792 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2021-10-11 02:23:25,792 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2021-10-11 02:23:25,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731548615] [2021-10-11 02:23:25,794 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-10-11 02:23:25,795 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:25,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-10-11 02:23:25,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-10-11 02:23:25,803 INFO L87 Difference]: Start difference. First operand 6 states and 6 transitions. Second operand 7 states. [2021-10-11 02:23:25,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:25,831 INFO L93 Difference]: Finished difference Result 12 states and 14 transitions. [2021-10-11 02:23:25,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-11 02:23:25,832 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 5 [2021-10-11 02:23:25,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:25,834 INFO L225 Difference]: With dead ends: 12 [2021-10-11 02:23:25,835 INFO L226 Difference]: Without dead ends: 9 [2021-10-11 02:23:25,840 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-10-11 02:23:25,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2021-10-11 02:23:25,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2021-10-11 02:23:25,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-10-11 02:23:25,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2021-10-11 02:23:25,845 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 5 [2021-10-11 02:23:25,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:25,846 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2021-10-11 02:23:25,846 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-10-11 02:23:25,846 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2021-10-11 02:23:25,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-11 02:23:25,847 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:23:25,848 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1] [2021-10-11 02:23:26,064 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-10-11 02:23:26,064 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:23:26,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:23:26,065 INFO L82 PathProgramCache]: Analyzing trace with hash 572320390, now seen corresponding path program 2 times [2021-10-11 02:23:26,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:23:26,065 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447754963] [2021-10-11 02:23:26,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:23:26,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:23:26,113 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-10-11 02:23:26,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447754963] [2021-10-11 02:23:26,115 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:23:26,115 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 02:23:26,115 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459738030] [2021-10-11 02:23:26,116 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 02:23:26,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:23:26,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 02:23:26,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:23:26,119 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 4 states. [2021-10-11 02:23:26,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:23:26,129 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2021-10-11 02:23:26,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 02:23:26,130 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2021-10-11 02:23:26,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:23:26,130 INFO L225 Difference]: With dead ends: 9 [2021-10-11 02:23:26,131 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:23:26,131 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-11 02:23:26,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:23:26,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:23:26,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:23:26,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:23:26,132 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2021-10-11 02:23:26,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:23:26,133 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:23:26,133 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 02:23:26,133 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:23:26,133 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:23:26,133 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-10-11 02:23:26,135 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 02:23:26,150 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 02:23:26,150 INFO L262 CegarLoopResult]: For program point L23(line 23) no Hoare annotation was computed. [2021-10-11 02:23:26,150 INFO L258 CegarLoopResult]: At program point L19-3(lines 19 21) the Hoare annotation is: (<= ULTIMATE.start_main_~a~0 6) [2021-10-11 02:23:26,151 INFO L262 CegarLoopResult]: For program point L19-4(lines 15 26) no Hoare annotation was computed. [2021-10-11 02:23:26,151 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 02:23:26,151 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 23) no Hoare annotation was computed. [2021-10-11 02:23:26,152 INFO L265 CegarLoopResult]: At program point L22-1(lines 22 24) the Hoare annotation is: true [2021-10-11 02:23:26,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:23:26 BoogieIcfgContainer [2021-10-11 02:23:26,170 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:23:26,171 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:23:26,171 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:23:26,172 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:23:26,172 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:23:24" (3/4) ... [2021-10-11 02:23:26,182 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:23:26,193 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-10-11 02:23:26,193 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-10-11 02:23:26,194 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-11 02:23:26,194 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-11 02:23:26,225 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f16b51af-a13d-4631-842e-8fd54ef4f765/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:23:26,225 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:23:26,227 INFO L168 Benchmark]: Toolchain (without parser) took 2778.53 ms. Allocated memory is still 142.6 MB. Free memory was 110.4 MB in the beginning and 71.0 MB in the end (delta: 39.3 MB). Peak memory consumption was 39.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:23:26,227 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 96.5 MB. Free memory is still 51.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:23:26,228 INFO L168 Benchmark]: CACSL2BoogieTranslator took 285.43 ms. Allocated memory is still 142.6 MB. Free memory was 110.0 MB in the beginning and 117.4 MB in the end (delta: -7.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:23:26,229 INFO L168 Benchmark]: Boogie Procedure Inliner took 52.11 ms. Allocated memory is still 142.6 MB. Free memory was 117.4 MB in the beginning and 116.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:23:26,229 INFO L168 Benchmark]: Boogie Preprocessor took 49.87 ms. Allocated memory is still 142.6 MB. Free memory was 116.0 MB in the beginning and 115.0 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:23:26,230 INFO L168 Benchmark]: RCFGBuilder took 428.76 ms. Allocated memory is still 142.6 MB. Free memory was 115.0 MB in the beginning and 102.3 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:23:26,231 INFO L168 Benchmark]: TraceAbstraction took 1887.18 ms. Allocated memory is still 142.6 MB. Free memory was 102.0 MB in the beginning and 73.1 MB in the end (delta: 28.9 MB). Peak memory consumption was 32.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:23:26,232 INFO L168 Benchmark]: Witness Printer took 54.50 ms. Allocated memory is still 142.6 MB. Free memory was 73.1 MB in the beginning and 71.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 02:23:26,235 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 96.5 MB. Free memory is still 51.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 285.43 ms. Allocated memory is still 142.6 MB. Free memory was 110.0 MB in the beginning and 117.4 MB in the end (delta: -7.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 52.11 ms. Allocated memory is still 142.6 MB. Free memory was 117.4 MB in the beginning and 116.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 49.87 ms. Allocated memory is still 142.6 MB. Free memory was 116.0 MB in the beginning and 115.0 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 428.76 ms. Allocated memory is still 142.6 MB. Free memory was 115.0 MB in the beginning and 102.3 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1887.18 ms. Allocated memory is still 142.6 MB. Free memory was 102.0 MB in the beginning and 73.1 MB in the end (delta: 28.9 MB). Peak memory consumption was 32.3 MB. Max. memory is 16.1 GB. * Witness Printer took 54.50 ms. Allocated memory is still 142.6 MB. Free memory was 73.1 MB in the beginning and 71.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 23]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: a <= 6 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 7 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.7s, OverallIterations: 3, TraceHistogramMax: 4, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 11 SDtfs, 1 SDslu, 3 SDs, 0 SdLazy, 17 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=2, 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, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 7 NumberOfFragments, 4 HoareAnnotationTreeSize, 2 FomulaSimplifications, 29 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 216 SizeOfPredicates, 0 NumberOfNonLiveVariables, 39 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 10/13 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...