./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-examples/sanfoundry_24-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_44f810a4-eaf7-4d0d-82d6-90c73356b840/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_44f810a4-eaf7-4d0d-82d6-90c73356b840/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_44f810a4-eaf7-4d0d-82d6-90c73356b840/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_44f810a4-eaf7-4d0d-82d6-90c73356b840/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/array-examples/sanfoundry_24-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_44f810a4-eaf7-4d0d-82d6-90c73356b840/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_44f810a4-eaf7-4d0d-82d6-90c73356b840/bin/utaipan --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 ccb5d8d533f248ce9cbf3b135241b499fec47cdc ................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-22 13:06:55,602 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 13:06:55,630 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 13:06:55,681 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 13:06:55,681 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 13:06:55,683 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 13:06:55,685 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 13:06:55,687 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 13:06:55,689 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 13:06:55,690 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 13:06:55,692 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 13:06:55,693 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 13:06:55,694 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 13:06:55,695 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 13:06:55,697 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 13:06:55,698 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 13:06:55,699 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 13:06:55,700 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 13:06:55,703 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 13:06:55,705 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 13:06:55,707 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 13:06:55,712 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 13:06:55,714 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 13:06:55,717 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 13:06:55,720 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 13:06:55,720 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 13:06:55,720 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 13:06:55,722 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 13:06:55,722 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 13:06:55,723 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 13:06:55,724 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 13:06:55,725 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 13:06:55,726 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 13:06:55,727 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 13:06:55,736 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 13:06:55,737 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 13:06:55,738 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 13:06:55,738 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 13:06:55,739 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 13:06:55,740 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 13:06:55,741 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 13:06:55,742 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_44f810a4-eaf7-4d0d-82d6-90c73356b840/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-22 13:06:55,786 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 13:06:55,786 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 13:06:55,788 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 13:06:55,788 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 13:06:55,788 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 13:06:55,789 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 13:06:55,789 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 13:06:55,789 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 13:06:55,789 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 13:06:55,789 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 13:06:55,791 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 13:06:55,791 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 13:06:55,791 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 13:06:55,791 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 13:06:55,792 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 13:06:55,792 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 13:06:55,793 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 13:06:55,793 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 13:06:55,793 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 13:06:55,793 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 13:06:55,793 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 13:06:55,794 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 13:06:55,794 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 13:06:55,794 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 13:06:55,794 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 13:06:55,794 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 13:06:55,795 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 13:06:55,795 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 13:06:55,795 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 13:06:55,795 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 13:06:55,796 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 13:06:55,796 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 13:06:55,796 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 13:06:55,796 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 13:06:55,797 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 13:06:55,797 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 13:06:55,797 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 13:06:55,797 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 13:06:55,797 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 13:06:55,798 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 13:06:55,798 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-vcloud-master/worker/run_dir_44f810a4-eaf7-4d0d-82d6-90c73356b840/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_44f810a4-eaf7-4d0d-82d6-90c73356b840/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ccb5d8d533f248ce9cbf3b135241b499fec47cdc [2020-11-22 13:06:56,156 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 13:06:56,192 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 13:06:56,197 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 13:06:56,199 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 13:06:56,199 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 13:06:56,200 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_44f810a4-eaf7-4d0d-82d6-90c73356b840/bin/utaipan/../../sv-benchmarks/c/array-examples/sanfoundry_24-1.i [2020-11-22 13:06:56,267 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_44f810a4-eaf7-4d0d-82d6-90c73356b840/bin/utaipan/data/9136a1ea8/562a2ceb2b184031bc0fae946f1fdd0c/FLAGaae69e232 [2020-11-22 13:06:56,717 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 13:06:56,718 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_44f810a4-eaf7-4d0d-82d6-90c73356b840/sv-benchmarks/c/array-examples/sanfoundry_24-1.i [2020-11-22 13:06:56,729 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_44f810a4-eaf7-4d0d-82d6-90c73356b840/bin/utaipan/data/9136a1ea8/562a2ceb2b184031bc0fae946f1fdd0c/FLAGaae69e232 [2020-11-22 13:06:57,094 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_44f810a4-eaf7-4d0d-82d6-90c73356b840/bin/utaipan/data/9136a1ea8/562a2ceb2b184031bc0fae946f1fdd0c [2020-11-22 13:06:57,097 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 13:06:57,100 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 13:06:57,105 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 13:06:57,106 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 13:06:57,109 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 13:06:57,111 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:06:57" (1/1) ... [2020-11-22 13:06:57,113 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a2abc49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:57, skipping insertion in model container [2020-11-22 13:06:57,113 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 01:06:57" (1/1) ... [2020-11-22 13:06:57,121 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 13:06:57,141 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 13:06:57,310 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:06:57,328 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 13:06:57,373 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 13:06:57,393 INFO L208 MainTranslator]: Completed translation [2020-11-22 13:06:57,394 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:57 WrapperNode [2020-11-22 13:06:57,395 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 13:06:57,396 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 13:06:57,396 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 13:06:57,396 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 13:06:57,404 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:57" (1/1) ... [2020-11-22 13:06:57,425 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:57" (1/1) ... [2020-11-22 13:06:57,445 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 13:06:57,446 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 13:06:57,446 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 13:06:57,446 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 13:06:57,455 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:57" (1/1) ... [2020-11-22 13:06:57,455 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:57" (1/1) ... [2020-11-22 13:06:57,457 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:57" (1/1) ... [2020-11-22 13:06:57,458 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:57" (1/1) ... [2020-11-22 13:06:57,463 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:57" (1/1) ... [2020-11-22 13:06:57,467 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:57" (1/1) ... [2020-11-22 13:06:57,469 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:57" (1/1) ... [2020-11-22 13:06:57,471 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 13:06:57,472 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 13:06:57,472 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 13:06:57,473 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 13:06:57,474 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:57" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_44f810a4-eaf7-4d0d-82d6-90c73356b840/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 [2020-11-22 13:06:57,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 13:06:57,562 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 13:06:57,562 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-22 13:06:57,562 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 13:06:57,563 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 13:06:57,563 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-22 13:06:57,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-22 13:06:58,015 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 13:06:58,015 INFO L298 CfgBuilder]: Removed 19 assume(true) statements. [2020-11-22 13:06:58,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:06:58 BoogieIcfgContainer [2020-11-22 13:06:58,018 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 13:06:58,020 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 13:06:58,020 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 13:06:58,023 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 13:06:58,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 01:06:57" (1/3) ... [2020-11-22 13:06:58,033 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15d733cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:06:58, skipping insertion in model container [2020-11-22 13:06:58,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 01:06:57" (2/3) ... [2020-11-22 13:06:58,033 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15d733cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 01:06:58, skipping insertion in model container [2020-11-22 13:06:58,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:06:58" (3/3) ... [2020-11-22 13:06:58,038 INFO L111 eAbstractionObserver]: Analyzing ICFG sanfoundry_24-1.i [2020-11-22 13:06:58,050 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 13:06:58,054 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-22 13:06:58,067 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-22 13:06:58,105 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 13:06:58,105 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 13:06:58,106 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 13:06:58,106 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 13:06:58,106 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 13:06:58,106 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 13:06:58,106 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 13:06:58,107 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 13:06:58,120 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-11-22 13:06:58,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-22 13:06:58,126 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:06:58,128 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:06:58,129 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:06:58,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:06:58,137 INFO L82 PathProgramCache]: Analyzing trace with hash -222025387, now seen corresponding path program 1 times [2020-11-22 13:06:58,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:06:58,147 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604306224] [2020-11-22 13:06:58,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:06:58,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:06:58,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 13:06:58,379 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604306224] [2020-11-22 13:06:58,379 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:06:58,380 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-22 13:06:58,380 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104176196] [2020-11-22 13:06:58,384 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:06:58,384 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:06:58,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:06:58,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:06:58,408 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 4 states. [2020-11-22 13:06:58,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:06:58,495 INFO L93 Difference]: Finished difference Result 58 states and 83 transitions. [2020-11-22 13:06:58,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-22 13:06:58,497 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-11-22 13:06:58,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:06:58,505 INFO L225 Difference]: With dead ends: 58 [2020-11-22 13:06:58,505 INFO L226 Difference]: Without dead ends: 35 [2020-11-22 13:06:58,508 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:06:58,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-11-22 13:06:58,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 20. [2020-11-22 13:06:58,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-11-22 13:06:58,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2020-11-22 13:06:58,551 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 7 [2020-11-22 13:06:58,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:06:58,552 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2020-11-22 13:06:58,552 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:06:58,552 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2020-11-22 13:06:58,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-22 13:06:58,553 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:06:58,553 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:06:58,554 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-22 13:06:58,554 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:06:58,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:06:58,558 INFO L82 PathProgramCache]: Analyzing trace with hash -416207845, now seen corresponding path program 1 times [2020-11-22 13:06:58,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:06:58,559 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849857315] [2020-11-22 13:06:58,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:06:58,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:06:58,721 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-22 13:06:58,722 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849857315] [2020-11-22 13:06:58,722 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:06:58,722 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-22 13:06:58,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033515538] [2020-11-22 13:06:58,723 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:06:58,724 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:06:58,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:06:58,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:06:58,725 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand 4 states. [2020-11-22 13:06:58,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:06:58,878 INFO L93 Difference]: Finished difference Result 26 states and 33 transitions. [2020-11-22 13:06:58,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-22 13:06:58,878 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-11-22 13:06:58,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:06:58,880 INFO L225 Difference]: With dead ends: 26 [2020-11-22 13:06:58,880 INFO L226 Difference]: Without dead ends: 23 [2020-11-22 13:06:58,881 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-22 13:06:58,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-22 13:06:58,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 17. [2020-11-22 13:06:58,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-11-22 13:06:58,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2020-11-22 13:06:58,885 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 8 [2020-11-22 13:06:58,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:06:58,886 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2020-11-22 13:06:58,886 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:06:58,886 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2020-11-22 13:06:58,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-22 13:06:58,886 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 13:06:58,887 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 13:06:58,887 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-22 13:06:58,887 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 13:06:58,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 13:06:58,888 INFO L82 PathProgramCache]: Analyzing trace with hash -1786998350, now seen corresponding path program 1 times [2020-11-22 13:06:58,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 13:06:58,888 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558434300] [2020-11-22 13:06:58,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 13:06:58,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 13:06:59,009 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-22 13:06:59,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558434300] [2020-11-22 13:06:59,009 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-22 13:06:59,010 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-22 13:06:59,010 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581046003] [2020-11-22 13:06:59,010 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 13:06:59,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 13:06:59,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 13:06:59,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 13:06:59,012 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand 4 states. [2020-11-22 13:06:59,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 13:06:59,073 INFO L93 Difference]: Finished difference Result 23 states and 30 transitions. [2020-11-22 13:06:59,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-22 13:06:59,073 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-11-22 13:06:59,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 13:06:59,074 INFO L225 Difference]: With dead ends: 23 [2020-11-22 13:06:59,074 INFO L226 Difference]: Without dead ends: 0 [2020-11-22 13:06:59,075 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-22 13:06:59,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-22 13:06:59,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-22 13:06:59,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-22 13:06:59,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-22 13:06:59,075 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2020-11-22 13:06:59,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 13:06:59,076 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-22 13:06:59,076 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 13:06:59,076 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-22 13:06:59,076 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-22 13:06:59,076 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-22 13:06:59,078 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-22 13:06:59,099 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-22 13:06:59,099 INFO L277 CegarLoopResult]: At program point L27-3(lines 27 30) the Hoare annotation is: true [2020-11-22 13:06:59,100 INFO L274 CegarLoopResult]: For program point L32-2(lines 32 38) no Hoare annotation was computed. [2020-11-22 13:06:59,100 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-22 13:06:59,100 INFO L277 CegarLoopResult]: At program point L32-3(lines 32 38) the Hoare annotation is: true [2020-11-22 13:06:59,100 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-22 13:06:59,100 INFO L274 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-11-22 13:06:59,100 INFO L274 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-11-22 13:06:59,100 INFO L274 CegarLoopResult]: For program point L12-3(line 12) no Hoare annotation was computed. [2020-11-22 13:06:59,101 INFO L274 CegarLoopResult]: For program point L41(lines 41 44) no Hoare annotation was computed. [2020-11-22 13:06:59,101 INFO L274 CegarLoopResult]: For program point L12-4(line 12) no Hoare annotation was computed. [2020-11-22 13:06:59,101 INFO L274 CegarLoopResult]: For program point L12-6(line 12) no Hoare annotation was computed. [2020-11-22 13:06:59,101 INFO L274 CegarLoopResult]: For program point L12-7(line 12) no Hoare annotation was computed. [2020-11-22 13:06:59,101 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-22 13:06:59,101 INFO L274 CegarLoopResult]: For program point L34(lines 34 37) no Hoare annotation was computed. [2020-11-22 13:06:59,101 INFO L274 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2020-11-22 13:06:59,102 INFO L274 CegarLoopResult]: For program point L14-3(lines 1 47) no Hoare annotation was computed. [2020-11-22 13:06:59,102 INFO L274 CegarLoopResult]: For program point L14-4(line 14) no Hoare annotation was computed. [2020-11-22 13:06:59,102 INFO L274 CegarLoopResult]: For program point L14-7(lines 1 47) no Hoare annotation was computed. [2020-11-22 13:06:59,102 INFO L274 CegarLoopResult]: For program point L39-2(lines 39 45) no Hoare annotation was computed. [2020-11-22 13:06:59,102 INFO L277 CegarLoopResult]: At program point L39-3(lines 39 45) the Hoare annotation is: true [2020-11-22 13:06:59,113 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 01:06:59 BoogieIcfgContainer [2020-11-22 13:06:59,113 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 13:06:59,114 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 13:06:59,114 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 13:06:59,114 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 13:06:59,115 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 01:06:58" (3/4) ... [2020-11-22 13:06:59,118 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-22 13:06:59,129 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 18 nodes and edges [2020-11-22 13:06:59,130 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-11-22 13:06:59,130 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-11-22 13:06:59,130 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-22 13:06:59,203 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_44f810a4-eaf7-4d0d-82d6-90c73356b840/bin/utaipan/witness.graphml [2020-11-22 13:06:59,203 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 13:06:59,205 INFO L168 Benchmark]: Toolchain (without parser) took 2104.10 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 70.5 MB in the beginning and 70.2 MB in the end (delta: 286.3 kB). Peak memory consumption was 18.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:59,206 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 75.5 MB. Free memory was 55.1 MB in the beginning and 55.1 MB in the end (delta: 36.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 13:06:59,208 INFO L168 Benchmark]: CACSL2BoogieTranslator took 290.22 ms. Allocated memory is still 92.3 MB. Free memory was 70.3 MB in the beginning and 68.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:59,211 INFO L168 Benchmark]: Boogie Procedure Inliner took 49.31 ms. Allocated memory is still 92.3 MB. Free memory was 68.4 MB in the beginning and 66.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:59,213 INFO L168 Benchmark]: Boogie Preprocessor took 25.64 ms. Allocated memory is still 92.3 MB. Free memory was 66.9 MB in the beginning and 65.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:59,214 INFO L168 Benchmark]: RCFGBuilder took 545.54 ms. Allocated memory is still 92.3 MB. Free memory was 65.6 MB in the beginning and 69.2 MB in the end (delta: -3.7 MB). Peak memory consumption was 22.4 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:59,215 INFO L168 Benchmark]: TraceAbstraction took 1093.88 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 68.8 MB in the beginning and 73.5 MB in the end (delta: -4.7 MB). Peak memory consumption was 12.1 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:59,215 INFO L168 Benchmark]: Witness Printer took 89.46 ms. Allocated memory is still 111.1 MB. Free memory was 73.5 MB in the beginning and 70.2 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-22 13:06:59,222 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 75.5 MB. Free memory was 55.1 MB in the beginning and 55.1 MB in the end (delta: 36.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 290.22 ms. Allocated memory is still 92.3 MB. Free memory was 70.3 MB in the beginning and 68.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 49.31 ms. Allocated memory is still 92.3 MB. Free memory was 68.4 MB in the beginning and 66.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.64 ms. Allocated memory is still 92.3 MB. Free memory was 66.9 MB in the beginning and 65.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 545.54 ms. Allocated memory is still 92.3 MB. Free memory was 65.6 MB in the beginning and 69.2 MB in the end (delta: -3.7 MB). Peak memory consumption was 22.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1093.88 ms. Allocated memory was 92.3 MB in the beginning and 111.1 MB in the end (delta: 18.9 MB). Free memory was 68.8 MB in the beginning and 73.5 MB in the end (delta: -4.7 MB). Peak memory consumption was 12.1 MB. Max. memory is 16.1 GB. * Witness Printer took 89.46 ms. Allocated memory is still 111.1 MB. Free memory was 73.5 MB in the beginning and 70.2 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 21 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.9s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 56 SDtfs, 37 SDslu, 57 SDs, 0 SdLazy, 78 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, 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, 21 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 11 NumberOfFragments, 3 HoareAnnotationTreeSize, 3 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 27 NumberOfCodeBlocks, 27 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 551 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 3/3 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...