./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark25_linear.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_a3fef0cb-3e4c-4b16-a45b-285b2c7e0c47/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_a3fef0cb-3e4c-4b16-a45b-285b2c7e0c47/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a3fef0cb-3e4c-4b16-a45b-285b2c7e0c47/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a3fef0cb-3e4c-4b16-a45b-285b2c7e0c47/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark25_linear.i -s /tmp/vcloud-vcloud-master/worker/run_dir_a3fef0cb-3e4c-4b16-a45b-285b2c7e0c47/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a3fef0cb-3e4c-4b16-a45b-285b2c7e0c47/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 57db2827f748fdac723600595d50868896f17762 .................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 07:25:56,000 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:25:56,003 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:25:56,080 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:25:56,081 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:25:56,083 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:25:56,085 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:25:56,088 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:25:56,091 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:25:56,093 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:25:56,094 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:25:56,097 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:25:56,097 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:25:56,099 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:25:56,101 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:25:56,113 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:25:56,115 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:25:56,116 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:25:56,119 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:25:56,122 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:25:56,126 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:25:56,128 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:25:56,130 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:25:56,132 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:25:56,136 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:25:56,137 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:25:56,137 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:25:56,139 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:25:56,140 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:25:56,141 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:25:56,142 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:25:56,143 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:25:56,145 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:25:56,146 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:25:56,148 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:25:56,148 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:25:56,149 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:25:56,150 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:25:56,150 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:25:56,151 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:25:56,152 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:25:56,154 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a3fef0cb-3e4c-4b16-a45b-285b2c7e0c47/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:25:56,182 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:25:56,182 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:25:56,183 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:25:56,184 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:25:56,184 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:25:56,184 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:25:56,185 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:25:56,185 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:25:56,185 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:25:56,186 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:25:56,186 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:25:56,186 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:25:56,187 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:25:56,187 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:25:56,187 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:25:56,188 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:25:56,188 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:25:56,189 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:25:56,189 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:25:56,189 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:25:56,190 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:25:56,190 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:25:56,190 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:25:56,191 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:25:56,191 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:25:56,191 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:25:56,191 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:25:56,192 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:25:56,192 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:25:56,192 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:25:56,193 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:25:56,193 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:25:56,193 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:25:56,194 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:25:56,194 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:25:56,194 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:25:56,195 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:25:56,195 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:25:56,195 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:25:56,196 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:25:56,196 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_a3fef0cb-3e4c-4b16-a45b-285b2c7e0c47/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_a3fef0cb-3e4c-4b16-a45b-285b2c7e0c47/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 57db2827f748fdac723600595d50868896f17762 [2020-11-28 07:25:56,494 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:25:56,530 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:25:56,533 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:25:56,535 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:25:56,536 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:25:56,537 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a3fef0cb-3e4c-4b16-a45b-285b2c7e0c47/bin/utaipan/../../sv-benchmarks/c/loop-zilu/benchmark25_linear.i [2020-11-28 07:25:56,616 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a3fef0cb-3e4c-4b16-a45b-285b2c7e0c47/bin/utaipan/data/5c03a77fe/7cd6f8450ef34e4f82b001c327061d19/FLAGc49923b5f [2020-11-28 07:25:57,110 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:25:57,110 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a3fef0cb-3e4c-4b16-a45b-285b2c7e0c47/sv-benchmarks/c/loop-zilu/benchmark25_linear.i [2020-11-28 07:25:57,120 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a3fef0cb-3e4c-4b16-a45b-285b2c7e0c47/bin/utaipan/data/5c03a77fe/7cd6f8450ef34e4f82b001c327061d19/FLAGc49923b5f [2020-11-28 07:25:57,491 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a3fef0cb-3e4c-4b16-a45b-285b2c7e0c47/bin/utaipan/data/5c03a77fe/7cd6f8450ef34e4f82b001c327061d19 [2020-11-28 07:25:57,493 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:25:57,495 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:25:57,500 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:25:57,500 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:25:57,504 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:25:57,506 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:25:57" (1/1) ... [2020-11-28 07:25:57,508 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48037fbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:25:57, skipping insertion in model container [2020-11-28 07:25:57,509 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:25:57" (1/1) ... [2020-11-28 07:25:57,516 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:25:57,531 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:25:57,714 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:25:57,734 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:25:57,750 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:25:57,763 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:25:57,764 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:25:57 WrapperNode [2020-11-28 07:25:57,764 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:25:57,765 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:25:57,765 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:25:57,765 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:25:57,778 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:25:57" (1/1) ... [2020-11-28 07:25:57,785 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:25:57" (1/1) ... [2020-11-28 07:25:57,812 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:25:57,814 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:25:57,814 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:25:57,815 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:25:57,832 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:25:57" (1/1) ... [2020-11-28 07:25:57,833 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:25:57" (1/1) ... [2020-11-28 07:25:57,835 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:25:57" (1/1) ... [2020-11-28 07:25:57,835 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:25:57" (1/1) ... [2020-11-28 07:25:57,841 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:25:57" (1/1) ... [2020-11-28 07:25:57,851 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:25:57" (1/1) ... [2020-11-28 07:25:57,860 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:25:57" (1/1) ... [2020-11-28 07:25:57,862 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:25:57,863 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:25:57,865 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:25:57,867 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:25:57,868 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:25:57" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a3fef0cb-3e4c-4b16-a45b-285b2c7e0c47/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 [2020-11-28 07:25:57,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:25:57,949 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:25:57,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:25:57,950 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:25:58,241 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:25:58,241 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-28 07:25:58,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:25:58 BoogieIcfgContainer [2020-11-28 07:25:58,244 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:25:58,245 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:25:58,245 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:25:58,249 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:25:58,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:25:57" (1/3) ... [2020-11-28 07:25:58,251 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e5fa5ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:25:58, skipping insertion in model container [2020-11-28 07:25:58,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:25:57" (2/3) ... [2020-11-28 07:25:58,252 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e5fa5ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:25:58, skipping insertion in model container [2020-11-28 07:25:58,252 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:25:58" (3/3) ... [2020-11-28 07:25:58,253 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark25_linear.i [2020-11-28 07:25:58,265 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:25:58,269 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 07:25:58,282 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 07:25:58,310 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:25:58,311 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:25:58,311 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:25:58,311 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:25:58,311 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:25:58,311 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:25:58,311 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:25:58,312 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:25:58,326 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2020-11-28 07:25:58,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-28 07:25:58,332 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:25:58,334 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-28 07:25:58,335 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:25:58,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:25:58,349 INFO L82 PathProgramCache]: Analyzing trace with hash 2011779439, now seen corresponding path program 1 times [2020-11-28 07:25:58,362 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:25:58,374 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27390156] [2020-11-28 07:25:58,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:25:58,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:25:58,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:25:58,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27390156] [2020-11-28 07:25:58,577 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:25:58,578 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:25:58,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745952945] [2020-11-28 07:25:58,584 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:25:58,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:25:58,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:25:58,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:25:58,612 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 3 states. [2020-11-28 07:25:58,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:25:58,651 INFO L93 Difference]: Finished difference Result 18 states and 23 transitions. [2020-11-28 07:25:58,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:25:58,653 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-11-28 07:25:58,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:25:58,662 INFO L225 Difference]: With dead ends: 18 [2020-11-28 07:25:58,662 INFO L226 Difference]: Without dead ends: 8 [2020-11-28 07:25:58,666 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 [2020-11-28 07:25:58,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2020-11-28 07:25:58,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2020-11-28 07:25:58,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-11-28 07:25:58,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2020-11-28 07:25:58,702 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2020-11-28 07:25:58,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:25:58,702 INFO L481 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2020-11-28 07:25:58,702 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:25:58,703 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2020-11-28 07:25:58,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-28 07:25:58,703 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:25:58,704 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:25:58,704 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:25:58,704 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:25:58,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:25:58,706 INFO L82 PathProgramCache]: Analyzing trace with hash -2082797155, now seen corresponding path program 1 times [2020-11-28 07:25:58,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:25:58,706 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042736414] [2020-11-28 07:25:58,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:25:58,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:25:58,764 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:25:58,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042736414] [2020-11-28 07:25:58,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [896385964] [2020-11-28 07:25:58,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a3fef0cb-3e4c-4b16-a45b-285b2c7e0c47/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 07:25:58,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:25:58,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-28 07:25:58,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:25:58,879 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:25:58,880 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:25:58,920 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:25:58,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [228479932] [2020-11-28 07:25:58,948 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2020-11-28 07:25:58,949 INFO L166 IcfgInterpreter]: Building call graph [2020-11-28 07:25:58,955 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-28 07:25:58,962 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-28 07:25:58,963 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-28 07:25:59,553 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-28 07:25:59,681 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 28 [2020-11-28 07:25:59,848 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 45 [2020-11-28 07:26:00,043 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 07:26:00,044 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-11-28 07:26:00,044 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2020-11-28 07:26:00,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823420577] [2020-11-28 07:26:00,045 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 07:26:00,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:26:00,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 07:26:00,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-11-28 07:26:00,047 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 6 states. [2020-11-28 07:26:00,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:26:00,082 INFO L93 Difference]: Finished difference Result 15 states and 17 transitions. [2020-11-28 07:26:00,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 07:26:00,084 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 7 [2020-11-28 07:26:00,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:26:00,085 INFO L225 Difference]: With dead ends: 15 [2020-11-28 07:26:00,085 INFO L226 Difference]: Without dead ends: 11 [2020-11-28 07:26:00,086 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-11-28 07:26:00,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-11-28 07:26:00,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-11-28 07:26:00,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-11-28 07:26:00,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2020-11-28 07:26:00,089 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 7 [2020-11-28 07:26:00,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:26:00,089 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2020-11-28 07:26:00,089 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 07:26:00,089 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2020-11-28 07:26:00,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 07:26:00,091 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:26:00,092 INFO L422 BasicCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1] [2020-11-28 07:26:00,302 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-28 07:26:00,302 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:26:00,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:26:00,303 INFO L82 PathProgramCache]: Analyzing trace with hash -1028854545, now seen corresponding path program 2 times [2020-11-28 07:26:00,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:26:00,303 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428473792] [2020-11-28 07:26:00,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:26:00,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:26:00,356 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-11-28 07:26:00,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428473792] [2020-11-28 07:26:00,356 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:26:00,356 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 07:26:00,357 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225178089] [2020-11-28 07:26:00,357 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 07:26:00,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:26:00,358 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 07:26:00,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 07:26:00,358 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 4 states. [2020-11-28 07:26:00,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:26:00,380 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2020-11-28 07:26:00,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 07:26:00,380 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-11-28 07:26:00,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:26:00,381 INFO L225 Difference]: With dead ends: 11 [2020-11-28 07:26:00,381 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 07:26:00,381 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 [2020-11-28 07:26:00,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 07:26:00,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 07:26:00,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 07:26:00,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 07:26:00,382 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2020-11-28 07:26:00,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:26:00,382 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 07:26:00,382 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 07:26:00,383 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 07:26:00,383 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 07:26:00,383 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-11-28 07:26:00,385 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 07:26:00,395 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 07:26:00,396 INFO L274 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-11-28 07:26:00,396 INFO L274 CegarLoopResult]: For program point L15(lines 15 17) no Hoare annotation was computed. [2020-11-28 07:26:00,396 INFO L274 CegarLoopResult]: For program point L11(line 11) no Hoare annotation was computed. [2020-11-28 07:26:00,396 INFO L274 CegarLoopResult]: For program point L11-2(line 11) no Hoare annotation was computed. [2020-11-28 07:26:00,396 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 07:26:00,396 INFO L277 CegarLoopResult]: At program point L26(lines 19 27) the Hoare annotation is: true [2020-11-28 07:26:00,397 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 11) no Hoare annotation was computed. [2020-11-28 07:26:00,397 INFO L270 CegarLoopResult]: At program point L22-2(lines 22 24) the Hoare annotation is: (<= ULTIMATE.start_main_~x~0 10) [2020-11-28 07:26:00,397 INFO L274 CegarLoopResult]: For program point L14(lines 14 18) no Hoare annotation was computed. [2020-11-28 07:26:00,411 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:26:00 BoogieIcfgContainer [2020-11-28 07:26:00,411 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:26:00,412 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:26:00,412 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:26:00,412 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:26:00,413 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:25:58" (3/4) ... [2020-11-28 07:26:00,416 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 07:26:00,425 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-11-28 07:26:00,425 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2020-11-28 07:26:00,425 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 07:26:00,426 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 07:26:00,466 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_a3fef0cb-3e4c-4b16-a45b-285b2c7e0c47/bin/utaipan/witness.graphml [2020-11-28 07:26:00,466 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:26:00,467 INFO L168 Benchmark]: Toolchain (without parser) took 2972.22 ms. Allocated memory was 90.2 MB in the beginning and 119.5 MB in the end (delta: 29.4 MB). Free memory was 60.0 MB in the beginning and 78.0 MB in the end (delta: -18.0 MB). Peak memory consumption was 9.5 MB. Max. memory is 16.1 GB. [2020-11-28 07:26:00,467 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 90.2 MB. Free memory is still 49.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:26:00,468 INFO L168 Benchmark]: CACSL2BoogieTranslator took 264.09 ms. Allocated memory is still 90.2 MB. Free memory was 60.0 MB in the beginning and 66.9 MB in the end (delta: -7.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:26:00,468 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.80 ms. Allocated memory is still 90.2 MB. Free memory was 66.9 MB in the beginning and 65.7 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:26:00,468 INFO L168 Benchmark]: Boogie Preprocessor took 48.58 ms. Allocated memory is still 90.2 MB. Free memory was 65.5 MB in the beginning and 64.6 MB in the end (delta: 900.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:26:00,469 INFO L168 Benchmark]: RCFGBuilder took 380.29 ms. Allocated memory is still 90.2 MB. Free memory was 64.6 MB in the beginning and 52.3 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-28 07:26:00,469 INFO L168 Benchmark]: TraceAbstraction took 2165.99 ms. Allocated memory was 90.2 MB in the beginning and 119.5 MB in the end (delta: 29.4 MB). Free memory was 52.0 MB in the beginning and 80.1 MB in the end (delta: -28.1 MB). Peak memory consumption was 2.2 MB. Max. memory is 16.1 GB. [2020-11-28 07:26:00,470 INFO L168 Benchmark]: Witness Printer took 54.45 ms. Allocated memory is still 119.5 MB. Free memory was 80.1 MB in the beginning and 78.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:26:00,473 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 90.2 MB. Free memory is still 49.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 264.09 ms. Allocated memory is still 90.2 MB. Free memory was 60.0 MB in the beginning and 66.9 MB in the end (delta: -7.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 47.80 ms. Allocated memory is still 90.2 MB. Free memory was 66.9 MB in the beginning and 65.7 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 48.58 ms. Allocated memory is still 90.2 MB. Free memory was 65.5 MB in the beginning and 64.6 MB in the end (delta: 900.0 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 380.29 ms. Allocated memory is still 90.2 MB. Free memory was 64.6 MB in the beginning and 52.3 MB in the end (delta: 12.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2165.99 ms. Allocated memory was 90.2 MB in the beginning and 119.5 MB in the end (delta: 29.4 MB). Free memory was 52.0 MB in the beginning and 80.1 MB in the end (delta: -28.1 MB). Peak memory consumption was 2.2 MB. Max. memory is 16.1 GB. * Witness Printer took 54.45 ms. Allocated memory is still 119.5 MB. Free memory was 80.1 MB in the beginning and 78.0 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: 11]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: x <= 10 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.0s, OverallIterations: 3, TraceHistogramMax: 4, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 18 SDtfs, 1 SDslu, 14 SDs, 0 SdLazy, 18 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred 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, 31 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 30 NumberOfCodeBlocks, 30 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 375 SizeOfPredicates, 2 NumberOfNonLiveVariables, 40 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...