./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark26_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_1d2fd541-73c3-47d1-b726-9876a0910313/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_1d2fd541-73c3-47d1-b726-9876a0910313/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_1d2fd541-73c3-47d1-b726-9876a0910313/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_1d2fd541-73c3-47d1-b726-9876a0910313/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark26_linear.i -s /tmp/vcloud-vcloud-master/worker/run_dir_1d2fd541-73c3-47d1-b726-9876a0910313/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_1d2fd541-73c3-47d1-b726-9876a0910313/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 7a6eaea59c0b35225373a459ea8360d703e45820 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 07:42:21,910 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:42:21,913 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:42:21,966 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:42:21,967 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:42:21,981 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:42:21,984 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:42:21,987 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:42:21,993 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:42:21,995 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:42:21,996 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:42:21,997 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:42:21,998 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:42:21,999 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:42:22,000 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:42:22,002 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:42:22,003 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:42:22,004 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:42:22,006 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:42:22,008 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:42:22,010 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:42:22,013 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:42:22,014 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:42:22,016 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:42:22,019 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:42:22,023 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:42:22,024 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:42:22,025 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:42:22,027 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:42:22,028 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:42:22,028 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:42:22,030 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:42:22,031 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:42:22,033 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:42:22,034 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:42:22,034 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:42:22,035 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:42:22,035 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:42:22,035 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:42:22,037 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:42:22,038 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:42:22,041 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_1d2fd541-73c3-47d1-b726-9876a0910313/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:42:22,080 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:42:22,080 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:42:22,081 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:42:22,082 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:42:22,082 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:42:22,082 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:42:22,082 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:42:22,083 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:42:22,083 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:42:22,083 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:42:22,084 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:42:22,084 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:42:22,085 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:42:22,085 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:42:22,085 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:42:22,087 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:42:22,087 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:42:22,087 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:42:22,087 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:42:22,088 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:42:22,088 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:42:22,088 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:42:22,088 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:42:22,088 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:42:22,089 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:42:22,089 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:42:22,089 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:42:22,089 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:42:22,090 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:42:22,090 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:42:22,090 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:42:22,090 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:42:22,091 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:42:22,091 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:42:22,091 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:42:22,091 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:42:22,092 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:42:22,092 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:42:22,092 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:42:22,092 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:42:22,093 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_1d2fd541-73c3-47d1-b726-9876a0910313/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_1d2fd541-73c3-47d1-b726-9876a0910313/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7a6eaea59c0b35225373a459ea8360d703e45820 [2020-11-28 07:42:22,354 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:42:22,393 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:42:22,395 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:42:22,396 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:42:22,397 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:42:22,398 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_1d2fd541-73c3-47d1-b726-9876a0910313/bin/utaipan/../../sv-benchmarks/c/loop-zilu/benchmark26_linear.i [2020-11-28 07:42:22,488 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1d2fd541-73c3-47d1-b726-9876a0910313/bin/utaipan/data/1b2ae36e7/e4e9059ac6fa4b30add4858ffbda7449/FLAGf9f162e71 [2020-11-28 07:42:23,071 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:42:23,071 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_1d2fd541-73c3-47d1-b726-9876a0910313/sv-benchmarks/c/loop-zilu/benchmark26_linear.i [2020-11-28 07:42:23,082 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1d2fd541-73c3-47d1-b726-9876a0910313/bin/utaipan/data/1b2ae36e7/e4e9059ac6fa4b30add4858ffbda7449/FLAGf9f162e71 [2020-11-28 07:42:23,443 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_1d2fd541-73c3-47d1-b726-9876a0910313/bin/utaipan/data/1b2ae36e7/e4e9059ac6fa4b30add4858ffbda7449 [2020-11-28 07:42:23,448 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:42:23,451 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:42:23,454 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:42:23,455 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:42:23,458 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:42:23,460 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:42:23" (1/1) ... [2020-11-28 07:42:23,462 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e45a63e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:23, skipping insertion in model container [2020-11-28 07:42:23,462 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:42:23" (1/1) ... [2020-11-28 07:42:23,470 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:42:23,486 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:42:23,674 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:42:23,685 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:42:23,706 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:42:23,724 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:42:23,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:23 WrapperNode [2020-11-28 07:42:23,725 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:42:23,726 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:42:23,726 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:42:23,727 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:42:23,735 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:23" (1/1) ... [2020-11-28 07:42:23,743 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:23" (1/1) ... [2020-11-28 07:42:23,760 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:42:23,762 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:42:23,762 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:42:23,762 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:42:23,769 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:23" (1/1) ... [2020-11-28 07:42:23,769 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:23" (1/1) ... [2020-11-28 07:42:23,771 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:23" (1/1) ... [2020-11-28 07:42:23,771 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:23" (1/1) ... [2020-11-28 07:42:23,774 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:23" (1/1) ... [2020-11-28 07:42:23,777 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:23" (1/1) ... [2020-11-28 07:42:23,784 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:23" (1/1) ... [2020-11-28 07:42:23,786 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:42:23,787 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:42:23,787 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:42:23,787 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:42:23,789 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:23" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1d2fd541-73c3-47d1-b726-9876a0910313/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 07:42:23,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:42:23,869 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:42:23,869 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:42:23,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:42:24,224 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:42:24,225 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-28 07:42:24,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:42:24 BoogieIcfgContainer [2020-11-28 07:42:24,232 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:42:24,234 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:42:24,234 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:42:24,244 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:42:24,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:42:23" (1/3) ... [2020-11-28 07:42:24,246 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c589bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:42:24, skipping insertion in model container [2020-11-28 07:42:24,246 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:42:23" (2/3) ... [2020-11-28 07:42:24,247 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c589bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:42:24, skipping insertion in model container [2020-11-28 07:42:24,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:42:24" (3/3) ... [2020-11-28 07:42:24,248 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark26_linear.i [2020-11-28 07:42:24,262 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:42:24,265 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 07:42:24,274 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 07:42:24,297 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:42:24,297 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:42:24,297 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:42:24,297 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:42:24,297 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:42:24,297 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:42:24,298 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:42:24,298 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:42:24,310 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states. [2020-11-28 07:42:24,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-28 07:42:24,314 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:24,315 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-28 07:42:24,315 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:24,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:24,321 INFO L82 PathProgramCache]: Analyzing trace with hash 2011779439, now seen corresponding path program 1 times [2020-11-28 07:42:24,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:24,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275298126] [2020-11-28 07:42:24,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:24,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:24,482 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 07:42:24,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275298126] [2020-11-28 07:42:24,483 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:42:24,484 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 07:42:24,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101183630] [2020-11-28 07:42:24,488 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 07:42:24,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:42:24,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 07:42:24,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 07:42:24,506 INFO L87 Difference]: Start difference. First operand 10 states. Second operand 3 states. [2020-11-28 07:42:24,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:24,554 INFO L93 Difference]: Finished difference Result 18 states and 23 transitions. [2020-11-28 07:42:24,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 07:42:24,557 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-11-28 07:42:24,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:24,565 INFO L225 Difference]: With dead ends: 18 [2020-11-28 07:42:24,565 INFO L226 Difference]: Without dead ends: 8 [2020-11-28 07:42:24,568 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 07:42:24,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2020-11-28 07:42:24,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2020-11-28 07:42:24,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-11-28 07:42:24,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2020-11-28 07:42:24,608 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2020-11-28 07:42:24,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:24,609 INFO L481 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2020-11-28 07:42:24,609 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 07:42:24,609 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2020-11-28 07:42:24,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-28 07:42:24,610 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:42:24,610 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:42:24,610 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:42:24,611 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:42:24,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:42:24,613 INFO L82 PathProgramCache]: Analyzing trace with hash -2082797155, now seen corresponding path program 1 times [2020-11-28 07:42:24,614 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:42:24,614 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236553101] [2020-11-28 07:42:24,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:42:24,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:24,754 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 07:42:24,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236553101] [2020-11-28 07:42:24,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1518830464] [2020-11-28 07:42:24,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1d2fd541-73c3-47d1-b726-9876a0910313/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 07:42:24,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:42:24,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-28 07:42:24,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:42:24,881 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 07:42:24,886 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-28 07:42:24,928 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 07:42:24,928 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:42:24,945 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-28 07:42:24,974 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 07:42:24,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [81562027] [2020-11-28 07:42:24,995 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2020-11-28 07:42:24,995 INFO L166 IcfgInterpreter]: Building call graph [2020-11-28 07:42:25,001 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-28 07:42:25,007 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-28 07:42:25,008 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-28 07:42:25,371 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-28 07:42:25,722 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 49 [2020-11-28 07:42:26,210 WARN L193 SmtUtils]: Spent 453.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 54 [2020-11-28 07:42:26,487 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 55 [2020-11-28 07:42:26,490 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2020-11-28 07:42:26,490 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5, 5] total 9 [2020-11-28 07:42:26,491 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614104476] [2020-11-28 07:42:26,492 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:42:26,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:42:26,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:42:26,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-11-28 07:42:26,493 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 5 states. [2020-11-28 07:42:26,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:42:26,527 INFO L93 Difference]: Finished difference Result 8 states and 8 transitions. [2020-11-28 07:42:26,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 07:42:26,528 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 7 [2020-11-28 07:42:26,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:42:26,528 INFO L225 Difference]: With dead ends: 8 [2020-11-28 07:42:26,529 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 07:42:26,529 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 5 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-11-28 07:42:26,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 07:42:26,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 07:42:26,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 07:42:26,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 07:42:26,530 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2020-11-28 07:42:26,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:42:26,530 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 07:42:26,530 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:42:26,531 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 07:42:26,531 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 07:42:26,741 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-28 07:42:26,742 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 07:42:26,915 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification that was a NOOP. DAG size: 54 [2020-11-28 07:42:26,927 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 07:42:26,927 INFO L277 CegarLoopResult]: At program point L27(lines 19 28) the Hoare annotation is: true [2020-11-28 07:42:26,928 INFO L270 CegarLoopResult]: At program point L23-2(lines 23 25) the Hoare annotation is: (and (<= 0 (+ ULTIMATE.start_main_~x~0 2147483648)) (let ((.cse15 (select |#memory_int| |#t~string0.base|))) (let ((.cse0 (= |#t~string1.offset| 0)) (.cse1 (= |#NULL.base| 0)) (.cse2 (= (select .cse15 |#t~string0.offset|) 48)) (.cse3 (= (select .cse15 (+ |#t~string0.offset| 1)) 0)) (.cse4 (= (select |#valid| 0) 0)) (.cse5 (= 2 (select |#length| |#t~string0.base|))) (.cse6 (<= ULTIMATE.start_main_~y~0 2147483647)) (.cse7 (= (select |#length| |#t~string1.base|) 21)) (.cse8 (< |#StackHeapBarrier| |#t~string0.base|)) (.cse9 (= (select |#valid| |#t~string0.base|) 1)) (.cse10 (< 0 |#StackHeapBarrier|)) (.cse11 (< |#StackHeapBarrier| |#t~string1.base|)) (.cse12 (= |#NULL.offset| 0)) (.cse13 (= (select |#valid| |#t~string1.base|) 1)) (.cse14 (= |#t~string0.offset| 0))) (or (and .cse0 .cse1 (<= 0 (+ ULTIMATE.start_main_~x~0 2147483647)) .cse2 .cse3 .cse4 (< ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~y~0 1)) .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse14 (< ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0)))))) [2020-11-28 07:42:26,928 INFO L274 CegarLoopResult]: For program point L15(lines 15 17) no Hoare annotation was computed. [2020-11-28 07:42:26,928 INFO L274 CegarLoopResult]: For program point L11(line 11) no Hoare annotation was computed. [2020-11-28 07:42:26,928 INFO L274 CegarLoopResult]: For program point L11-2(line 11) no Hoare annotation was computed. [2020-11-28 07:42:26,928 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 07:42:26,928 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 11) no Hoare annotation was computed. [2020-11-28 07:42:26,928 INFO L274 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-11-28 07:42:26,928 INFO L274 CegarLoopResult]: For program point L14(lines 14 18) no Hoare annotation was computed. [2020-11-28 07:42:26,943 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:42:26,945 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-28 07:42:26,945 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-28 07:42:26,945 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-28 07:42:26,946 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-28 07:42:26,946 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:42:26,946 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:42:26,946 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:42:26,946 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:42:26,946 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:42:26,946 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-28 07:42:26,947 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-28 07:42:26,947 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-28 07:42:26,947 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-28 07:42:26,947 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:42:26,947 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:42:26,947 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:42:26,947 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:42:26,955 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:42:26,956 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-28 07:42:26,956 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-28 07:42:26,956 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-28 07:42:26,957 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-28 07:42:26,957 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:42:26,957 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:42:26,957 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:42:26,958 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:42:26,958 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:42:26,958 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-28 07:42:26,958 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-28 07:42:26,959 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-28 07:42:26,959 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-28 07:42:26,959 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:42:26,959 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:42:26,960 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:42:26,960 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:42:26,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:42:26 BoogieIcfgContainer [2020-11-28 07:42:26,964 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:42:26,964 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:42:26,965 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:42:26,965 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:42:26,965 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:42:24" (3/4) ... [2020-11-28 07:42:26,968 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 07:42:26,977 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2020-11-28 07:42:26,977 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2020-11-28 07:42:26,977 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 07:42:26,977 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 07:42:27,013 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_1d2fd541-73c3-47d1-b726-9876a0910313/bin/utaipan/witness.graphml [2020-11-28 07:42:27,014 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:42:27,015 INFO L168 Benchmark]: Toolchain (without parser) took 3563.39 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 72.8 MB in the beginning and 77.3 MB in the end (delta: -4.6 MB). Peak memory consumption was 15.9 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:27,015 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 75.5 MB. Free memory was 35.4 MB in the beginning and 35.4 MB in the end (delta: 13.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:42:27,016 INFO L168 Benchmark]: CACSL2BoogieTranslator took 271.11 ms. Allocated memory is still 102.8 MB. Free memory was 72.5 MB in the beginning and 80.7 MB in the end (delta: -8.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:27,017 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.13 ms. Allocated memory is still 102.8 MB. Free memory was 80.7 MB in the beginning and 79.5 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:42:27,017 INFO L168 Benchmark]: Boogie Preprocessor took 24.52 ms. Allocated memory is still 102.8 MB. Free memory was 79.5 MB in the beginning and 78.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:27,018 INFO L168 Benchmark]: RCFGBuilder took 445.70 ms. Allocated memory is still 102.8 MB. Free memory was 78.2 MB in the beginning and 65.2 MB in the end (delta: 13.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:27,018 INFO L168 Benchmark]: TraceAbstraction took 2729.80 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 64.8 MB in the beginning and 80.5 MB in the end (delta: -15.7 MB). Peak memory consumption was 46.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:27,019 INFO L168 Benchmark]: Witness Printer took 49.24 ms. Allocated memory is still 123.7 MB. Free memory was 80.5 MB in the beginning and 77.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:42:27,022 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 75.5 MB. Free memory was 35.4 MB in the beginning and 35.4 MB in the end (delta: 13.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 271.11 ms. Allocated memory is still 102.8 MB. Free memory was 72.5 MB in the beginning and 80.7 MB in the end (delta: -8.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 34.13 ms. Allocated memory is still 102.8 MB. Free memory was 80.7 MB in the beginning and 79.5 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.52 ms. Allocated memory is still 102.8 MB. Free memory was 79.5 MB in the beginning and 78.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 445.70 ms. Allocated memory is still 102.8 MB. Free memory was 78.2 MB in the beginning and 65.2 MB in the end (delta: 13.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2729.80 ms. Allocated memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: 21.0 MB). Free memory was 64.8 MB in the beginning and 80.5 MB in the end (delta: -15.7 MB). Peak memory consumption was 46.4 MB. Max. memory is 16.1 GB. * Witness Printer took 49.24 ms. Allocated memory is still 123.7 MB. Free memory was 80.5 MB in the beginning and 77.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #length - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #StackHeapBarrier - GenericResult: Unfinished Backtranslation unknown boogie variable #NULL * 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: 23]: Loop Invariant [2020-11-28 07:42:27,031 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:42:27,031 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-28 07:42:27,032 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-28 07:42:27,032 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-28 07:42:27,032 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-28 07:42:27,032 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:42:27,032 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:42:27,033 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:42:27,033 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:42:27,033 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:42:27,033 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-28 07:42:27,033 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-28 07:42:27,034 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-28 07:42:27,034 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-28 07:42:27,034 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:42:27,034 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:42:27,034 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:42:27,035 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:42:27,037 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:42:27,037 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-28 07:42:27,038 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-28 07:42:27,038 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-28 07:42:27,038 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-28 07:42:27,038 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:42:27,039 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:42:27,039 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:42:27,039 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:42:27,039 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL [2020-11-28 07:42:27,039 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-28 07:42:27,040 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-28 07:42:27,040 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-28 07:42:27,040 WARN L1295 BoogieBacktranslator]: unknown boogie variable #length [2020-11-28 07:42:27,040 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:42:27,040 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:42:27,041 WARN L1295 BoogieBacktranslator]: unknown boogie variable #StackHeapBarrier [2020-11-28 07:42:27,041 WARN L1295 BoogieBacktranslator]: unknown boogie variable #NULL Derived loop invariant: 0 <= x + 2147483648 && ((((((((((((((((("benchmark26_linear.c" == 0 && #NULL == 0) && 0 <= x + 2147483647) && unknown-#memory_int-unknown["0"]["0"] == 48) && unknown-#memory_int-unknown["0"]["0" + 1] == 0) && \valid[0] == 0) && x < y + 1) && 2 == unknown-#length-unknown["0"]) && y <= 2147483647) && unknown-#length-unknown["benchmark26_linear.c"] == 21) && unknown-#StackHeapBarrier-unknown < "0") && \valid["0"] == 1) && 0 < unknown-#StackHeapBarrier-unknown) && unknown-#StackHeapBarrier-unknown < "benchmark26_linear.c") && #NULL == 0) && \valid["benchmark26_linear.c"] == 1) && "0" == 0) || ((((((((((((((("benchmark26_linear.c" == 0 && #NULL == 0) && unknown-#memory_int-unknown["0"]["0"] == 48) && unknown-#memory_int-unknown["0"]["0" + 1] == 0) && \valid[0] == 0) && 2 == unknown-#length-unknown["0"]) && y <= 2147483647) && unknown-#length-unknown["benchmark26_linear.c"] == 21) && unknown-#StackHeapBarrier-unknown < "0") && \valid["0"] == 1) && 0 < unknown-#StackHeapBarrier-unknown) && unknown-#StackHeapBarrier-unknown < "benchmark26_linear.c") && #NULL == 0) && \valid["benchmark26_linear.c"] == 1) && "0" == 0) && x < y)) - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 10 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.4s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 11 SDtfs, 3 SDslu, 6 SDs, 0 SdLazy, 11 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 5 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=10occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 4 NumberOfFragments, 153 HoareAnnotationTreeSize, 2 FomulaSimplifications, 156 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 23 ConstructedInterpolants, 0 QuantifiedInterpolants, 329 SizeOfPredicates, 6 NumberOfNonLiveVariables, 42 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 0/3 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: OVERALL_TIME[ms]: 377, ICFG_INTERPRETER_ENTERED_PROCEDURES: 1, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 5, DAG_INTERPRETER_EARLY_EXITS: 1, TOOLS_POST_APPLICATIONS: 6, TOOLS_POST_TIME[ms]: 165, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME[ms]: 0, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME[ms]: 0, TOOLS_QUANTIFIERELIM_APPLICATIONS: 6, TOOLS_QUANTIFIERELIM_TIME[ms]: 161, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 154, FLUID_QUERY_TIME[ms]: 3, FLUID_QUERIES: 16, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 0, DOMAIN_JOIN_TIME[ms]: 0, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 1, DOMAIN_WIDEN_TIME[ms]: 129, DOMAIN_ISSUBSETEQ_APPLICATIONS: 2, DOMAIN_ISSUBSETEQ_TIME[ms]: 7, DOMAIN_ISBOTTOM_APPLICATIONS: 5, DOMAIN_ISBOTTOM_TIME[ms]: 14, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 147, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 147, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 2, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME[ms]: 0, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 0, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 4, PATH_EXPR_TIME[ms]: 3, REGEX_TO_DAG_TIME[ms]: 3, DAG_COMPRESSION_TIME[ms]: 12, DAG_COMPRESSION_PROCESSED_NODES: 41, DAG_COMPRESSION_RETAINED_NODES: 20, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...