./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-invgen/MADWiFi-encode_ie_ok.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_a53de12a-bbef-47d8-ad4a-e93736175a31/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_a53de12a-bbef-47d8-ad4a-e93736175a31/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_a53de12a-bbef-47d8-ad4a-e93736175a31/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_a53de12a-bbef-47d8-ad4a-e93736175a31/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-invgen/MADWiFi-encode_ie_ok.i -s /tmp/vcloud-vcloud-master/worker/run_dir_a53de12a-bbef-47d8-ad4a-e93736175a31/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_a53de12a-bbef-47d8-ad4a-e93736175a31/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 8c573b473fe5d13973daf8eaca36a6666498a98a .................................................................................................................................................................................................................................................................................................................................................................................................................... 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 07:27:54,262 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 07:27:54,265 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 07:27:54,344 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 07:27:54,345 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 07:27:54,346 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 07:27:54,348 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 07:27:54,350 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 07:27:54,352 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 07:27:54,353 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 07:27:54,355 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 07:27:54,356 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 07:27:54,356 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 07:27:54,358 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 07:27:54,359 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 07:27:54,360 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 07:27:54,361 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 07:27:54,362 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 07:27:54,364 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 07:27:54,367 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 07:27:54,368 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 07:27:54,374 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 07:27:54,375 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 07:27:54,376 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 07:27:54,380 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 07:27:54,380 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 07:27:54,381 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 07:27:54,382 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 07:27:54,382 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 07:27:54,384 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 07:27:54,384 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 07:27:54,385 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 07:27:54,386 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 07:27:54,387 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 07:27:54,388 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 07:27:54,388 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 07:27:54,389 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 07:27:54,390 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 07:27:54,390 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 07:27:54,391 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 07:27:54,392 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 07:27:54,393 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_a53de12a-bbef-47d8-ad4a-e93736175a31/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-28 07:27:54,421 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 07:27:54,421 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 07:27:54,422 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-28 07:27:54,422 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-28 07:27:54,423 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-28 07:27:54,423 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-28 07:27:54,423 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-28 07:27:54,423 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-28 07:27:54,423 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-28 07:27:54,423 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-28 07:27:54,424 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-28 07:27:54,424 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-28 07:27:54,424 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-28 07:27:54,424 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-28 07:27:54,424 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-28 07:27:54,425 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 07:27:54,425 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 07:27:54,426 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 07:27:54,426 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 07:27:54,426 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 07:27:54,426 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 07:27:54,426 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 07:27:54,427 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 07:27:54,427 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-28 07:27:54,427 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 07:27:54,427 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 07:27:54,427 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 07:27:54,427 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 07:27:54,428 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 07:27:54,428 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 07:27:54,428 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 07:27:54,428 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 07:27:54,428 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 07:27:54,429 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 07:27:54,429 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 07:27:54,429 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-28 07:27:54,429 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 07:27:54,429 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 07:27:54,430 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 07:27:54,430 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-28 07:27:54,430 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_a53de12a-bbef-47d8-ad4a-e93736175a31/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_a53de12a-bbef-47d8-ad4a-e93736175a31/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8c573b473fe5d13973daf8eaca36a6666498a98a [2020-11-28 07:27:54,670 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 07:27:54,715 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 07:27:54,717 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 07:27:54,719 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 07:27:54,721 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 07:27:54,722 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_a53de12a-bbef-47d8-ad4a-e93736175a31/bin/utaipan/../../sv-benchmarks/c/loop-invgen/MADWiFi-encode_ie_ok.i [2020-11-28 07:27:54,802 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a53de12a-bbef-47d8-ad4a-e93736175a31/bin/utaipan/data/aa2fa103d/a5b2ca08d7354e6687f809da58fc0dd7/FLAG8d44d26bf [2020-11-28 07:27:55,258 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 07:27:55,259 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_a53de12a-bbef-47d8-ad4a-e93736175a31/sv-benchmarks/c/loop-invgen/MADWiFi-encode_ie_ok.i [2020-11-28 07:27:55,265 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_a53de12a-bbef-47d8-ad4a-e93736175a31/bin/utaipan/data/aa2fa103d/a5b2ca08d7354e6687f809da58fc0dd7/FLAG8d44d26bf [2020-11-28 07:27:55,648 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_a53de12a-bbef-47d8-ad4a-e93736175a31/bin/utaipan/data/aa2fa103d/a5b2ca08d7354e6687f809da58fc0dd7 [2020-11-28 07:27:55,651 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 07:27:55,652 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 07:27:55,654 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 07:27:55,654 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 07:27:55,658 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 07:27:55,658 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:27:55" (1/1) ... [2020-11-28 07:27:55,661 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18bb7135 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:55, skipping insertion in model container [2020-11-28 07:27:55,661 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 07:27:55" (1/1) ... [2020-11-28 07:27:55,668 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 07:27:55,685 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 07:27:55,892 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:27:55,900 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 07:27:55,918 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 07:27:55,933 INFO L208 MainTranslator]: Completed translation [2020-11-28 07:27:55,934 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:55 WrapperNode [2020-11-28 07:27:55,934 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 07:27:55,935 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 07:27:55,935 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 07:27:55,936 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 07:27:55,944 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:55" (1/1) ... [2020-11-28 07:27:55,951 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:55" (1/1) ... [2020-11-28 07:27:55,983 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 07:27:55,984 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 07:27:55,984 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 07:27:55,985 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 07:27:55,994 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:55" (1/1) ... [2020-11-28 07:27:55,994 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:55" (1/1) ... [2020-11-28 07:27:56,005 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:55" (1/1) ... [2020-11-28 07:27:56,007 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:55" (1/1) ... [2020-11-28 07:27:56,010 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:55" (1/1) ... [2020-11-28 07:27:56,014 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:55" (1/1) ... [2020-11-28 07:27:56,016 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:55" (1/1) ... [2020-11-28 07:27:56,018 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 07:27:56,019 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 07:27:56,019 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 07:27:56,019 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 07:27:56,026 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:55" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a53de12a-bbef-47d8-ad4a-e93736175a31/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 07:27:56,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 07:27:56,099 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 07:27:56,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 07:27:56,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 07:27:56,625 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 07:27:56,626 INFO L298 CfgBuilder]: Removed 13 assume(true) statements. [2020-11-28 07:27:56,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:27:56 BoogieIcfgContainer [2020-11-28 07:27:56,628 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 07:27:56,630 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 07:27:56,630 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 07:27:56,636 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 07:27:56,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 07:27:55" (1/3) ... [2020-11-28 07:27:56,637 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18584f89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:27:56, skipping insertion in model container [2020-11-28 07:27:56,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 07:27:55" (2/3) ... [2020-11-28 07:27:56,639 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18584f89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 07:27:56, skipping insertion in model container [2020-11-28 07:27:56,639 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:27:56" (3/3) ... [2020-11-28 07:27:56,641 INFO L111 eAbstractionObserver]: Analyzing ICFG MADWiFi-encode_ie_ok.i [2020-11-28 07:27:56,653 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 07:27:56,659 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-28 07:27:56,678 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-28 07:27:56,703 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 07:27:56,703 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 07:27:56,703 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 07:27:56,703 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 07:27:56,704 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 07:27:56,704 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 07:27:56,704 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 07:27:56,704 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 07:27:56,718 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-11-28 07:27:56,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 07:27:56,724 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:27:56,725 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:27:56,726 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:27:56,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:27:56,732 INFO L82 PathProgramCache]: Analyzing trace with hash -1915620601, now seen corresponding path program 1 times [2020-11-28 07:27:56,741 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:27:56,742 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435327340] [2020-11-28 07:27:56,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:27:56,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:27:56,952 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 07:27:56,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435327340] [2020-11-28 07:27:56,953 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:27:56,953 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 07:27:56,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655188069] [2020-11-28 07:27:56,959 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:27:56,960 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:27:56,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:27:56,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:27:56,980 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 5 states. [2020-11-28 07:27:57,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:27:57,149 INFO L93 Difference]: Finished difference Result 41 states and 54 transitions. [2020-11-28 07:27:57,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 07:27:57,151 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-11-28 07:27:57,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:27:57,159 INFO L225 Difference]: With dead ends: 41 [2020-11-28 07:27:57,159 INFO L226 Difference]: Without dead ends: 18 [2020-11-28 07:27:57,162 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:27:57,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-11-28 07:27:57,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2020-11-28 07:27:57,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-11-28 07:27:57,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2020-11-28 07:27:57,205 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 13 [2020-11-28 07:27:57,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:27:57,206 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2020-11-28 07:27:57,206 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:27:57,206 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2020-11-28 07:27:57,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-28 07:27:57,207 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:27:57,207 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:27:57,207 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 07:27:57,207 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:27:57,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:27:57,208 INFO L82 PathProgramCache]: Analyzing trace with hash 1599402531, now seen corresponding path program 1 times [2020-11-28 07:27:57,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:27:57,209 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730819915] [2020-11-28 07:27:57,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:27:57,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:27:57,288 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 07:27:57,289 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730819915] [2020-11-28 07:27:57,289 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 07:27:57,289 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 07:27:57,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237116793] [2020-11-28 07:27:57,290 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 07:27:57,291 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:27:57,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 07:27:57,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 07:27:57,292 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 5 states. [2020-11-28 07:27:57,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:27:57,539 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2020-11-28 07:27:57,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 07:27:57,539 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-11-28 07:27:57,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:27:57,540 INFO L225 Difference]: With dead ends: 25 [2020-11-28 07:27:57,540 INFO L226 Difference]: Without dead ends: 22 [2020-11-28 07:27:57,541 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-28 07:27:57,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-11-28 07:27:57,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2020-11-28 07:27:57,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-11-28 07:27:57,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2020-11-28 07:27:57,548 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 15 [2020-11-28 07:27:57,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:27:57,549 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2020-11-28 07:27:57,549 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 07:27:57,549 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2020-11-28 07:27:57,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-28 07:27:57,550 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 07:27:57,550 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 07:27:57,551 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 07:27:57,551 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 07:27:57,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 07:27:57,551 INFO L82 PathProgramCache]: Analyzing trace with hash -2010512835, now seen corresponding path program 1 times [2020-11-28 07:27:57,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-28 07:27:57,552 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951049247] [2020-11-28 07:27:57,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 07:27:57,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:27:57,658 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:27:57,658 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951049247] [2020-11-28 07:27:57,659 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1371039107] [2020-11-28 07:27:57,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_a53de12a-bbef-47d8-ad4a-e93736175a31/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 07:27:57,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 07:27:57,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-28 07:27:57,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 07:27:57,880 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 07:27:57,977 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:27:57,978 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-28 07:27:57,997 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-28 07:27:58,140 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 07:27:58,144 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2015737983] [2020-11-28 07:27:58,165 INFO L159 IcfgInterpreter]: Started Sifa with 17 locations of interest [2020-11-28 07:27:58,166 INFO L166 IcfgInterpreter]: Building call graph [2020-11-28 07:27:58,170 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-28 07:27:58,176 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-28 07:27:58,176 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-28 07:27:58,693 INFO L180 IcfgInterpreter]: Interpretation finished [2020-11-28 07:27:58,861 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 41 [2020-11-28 07:27:59,003 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2020-11-28 07:27:59,191 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2020-11-28 07:27:59,363 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 54 [2020-11-28 07:27:59,559 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 53 [2020-11-28 07:27:59,755 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 52 [2020-11-28 07:27:59,953 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 51 [2020-11-28 07:28:00,171 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 49 [2020-11-28 07:28:00,392 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 53 [2020-11-28 07:28:00,548 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 33 [2020-11-28 07:28:00,970 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 46 [2020-11-28 07:28:01,177 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 41 [2020-11-28 07:28:01,221 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 07:28:01,222 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2020-11-28 07:28:01,222 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2020-11-28 07:28:01,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914700365] [2020-11-28 07:28:01,223 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-28 07:28:01,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-28 07:28:01,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-28 07:28:01,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=545, Unknown=0, NotChecked=0, Total=650 [2020-11-28 07:28:01,225 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 13 states. [2020-11-28 07:28:01,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 07:28:01,538 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2020-11-28 07:28:01,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-28 07:28:01,539 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 20 [2020-11-28 07:28:01,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 07:28:01,539 INFO L225 Difference]: With dead ends: 27 [2020-11-28 07:28:01,539 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 07:28:01,540 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 36 SyntacticMatches, 5 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 391 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=236, Invalid=1170, Unknown=0, NotChecked=0, Total=1406 [2020-11-28 07:28:01,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 07:28:01,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 07:28:01,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 07:28:01,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 07:28:01,541 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2020-11-28 07:28:01,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 07:28:01,541 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 07:28:01,541 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-28 07:28:01,541 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 07:28:01,541 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 07:28:01,742 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-11-28 07:28:01,744 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 07:28:01,895 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-28 07:28:01,895 INFO L274 CegarLoopResult]: For program point L40(lines 25 56) no Hoare annotation was computed. [2020-11-28 07:28:01,895 INFO L274 CegarLoopResult]: For program point L36(line 36) no Hoare annotation was computed. [2020-11-28 07:28:01,895 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 07:28:01,895 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-28 07:28:01,896 INFO L270 CegarLoopResult]: At program point L49-3(lines 49 53) the Hoare annotation is: (let ((.cse1 (<= 1 ULTIMATE.start_main_~p~0)) (.cse2 (<= 1 ULTIMATE.start_main_~leader_len~0)) (.cse0 (+ (* 2 ULTIMATE.start_main_~ielen~0) ULTIMATE.start_main_~p~0))) (or (and (<= .cse0 (+ ULTIMATE.start_main_~bufsize_0~0 (* 2 ULTIMATE.start_main_~i~0))) .cse1 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse2) (and .cse1 (= ULTIMATE.start_main_~i~0 0) .cse2 (<= .cse0 ULTIMATE.start_main_~bufsize_0~0) (<= (+ ULTIMATE.start_main_~bufsize~0 ULTIMATE.start_main_~p~0) ULTIMATE.start_main_~bufsize_0~0)))) [2020-11-28 07:28:01,896 INFO L274 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-11-28 07:28:01,896 INFO L274 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-11-28 07:28:01,896 INFO L274 CegarLoopResult]: For program point L12-3(line 12) no Hoare annotation was computed. [2020-11-28 07:28:01,896 INFO L274 CegarLoopResult]: For program point L12-4(line 12) no Hoare annotation was computed. [2020-11-28 07:28:01,896 INFO L274 CegarLoopResult]: For program point L12-6(line 12) no Hoare annotation was computed. [2020-11-28 07:28:01,897 INFO L274 CegarLoopResult]: For program point L37(line 37) no Hoare annotation was computed. [2020-11-28 07:28:01,897 INFO L274 CegarLoopResult]: For program point L12-7(line 12) no Hoare annotation was computed. [2020-11-28 07:28:01,897 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 07:28:01,897 INFO L277 CegarLoopResult]: At program point L54(lines 25 56) the Hoare annotation is: true [2020-11-28 07:28:01,897 INFO L274 CegarLoopResult]: For program point L38(line 38) no Hoare annotation was computed. [2020-11-28 07:28:01,897 INFO L274 CegarLoopResult]: For program point L38-1(lines 25 56) no Hoare annotation was computed. [2020-11-28 07:28:01,897 INFO L274 CegarLoopResult]: For program point L18(lines 18 20) no Hoare annotation was computed. [2020-11-28 07:28:01,897 INFO L270 CegarLoopResult]: At program point L18-2(lines 17 22) the Hoare annotation is: (and (<= (+ (* 2 ULTIMATE.start_main_~ielen~0) ULTIMATE.start_main_~p~0) (+ ULTIMATE.start_main_~bufsize_0~0 (* 2 ULTIMATE.start_main_~i~0))) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= 1 ULTIMATE.start_main_~p~0) (<= (+ ULTIMATE.start_main_~p~0 2) ULTIMATE.start_main_~bufsize_0~0) (<= 1 ULTIMATE.start_main_~leader_len~0)) [2020-11-28 07:28:01,898 INFO L274 CegarLoopResult]: For program point L47(lines 47 48) no Hoare annotation was computed. [2020-11-28 07:28:01,898 INFO L274 CegarLoopResult]: For program point L18-3(lines 18 20) no Hoare annotation was computed. [2020-11-28 07:28:01,898 INFO L270 CegarLoopResult]: At program point L18-5(lines 17 22) the Hoare annotation is: (and (<= (+ (* 2 ULTIMATE.start_main_~ielen~0) ULTIMATE.start_main_~p~0) (+ ULTIMATE.start_main_~bufsize_0~0 (* 2 ULTIMATE.start_main_~i~0))) (<= 1 ULTIMATE.start_main_~p~0) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= (+ ULTIMATE.start_main_~p~0 2) ULTIMATE.start_main_~bufsize_0~0) (<= 1 ULTIMATE.start_main_~leader_len~0)) [2020-11-28 07:28:01,898 INFO L274 CegarLoopResult]: For program point L39(lines 25 56) no Hoare annotation was computed. [2020-11-28 07:28:01,898 INFO L274 CegarLoopResult]: For program point L35(line 35) no Hoare annotation was computed. [2020-11-28 07:28:01,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 07:28:01 BoogieIcfgContainer [2020-11-28 07:28:01,915 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 07:28:01,915 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 07:28:01,916 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 07:28:01,916 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 07:28:01,917 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 07:27:56" (3/4) ... [2020-11-28 07:28:01,919 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 07:28:01,930 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2020-11-28 07:28:01,930 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-28 07:28:01,931 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 07:28:01,931 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 07:28:01,998 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_a53de12a-bbef-47d8-ad4a-e93736175a31/bin/utaipan/witness.graphml [2020-11-28 07:28:01,998 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 07:28:01,999 INFO L168 Benchmark]: Toolchain (without parser) took 6346.32 ms. Allocated memory was 98.6 MB in the beginning and 161.5 MB in the end (delta: 62.9 MB). Free memory was 65.0 MB in the beginning and 74.7 MB in the end (delta: -9.7 MB). Peak memory consumption was 52.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:28:01,999 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 98.6 MB. Free memory was 70.5 MB in the beginning and 70.5 MB in the end (delta: 25.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:28:02,000 INFO L168 Benchmark]: CACSL2BoogieTranslator took 280.30 ms. Allocated memory is still 98.6 MB. Free memory was 64.8 MB in the beginning and 75.0 MB in the end (delta: -10.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 07:28:02,001 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.78 ms. Allocated memory is still 98.6 MB. Free memory was 75.0 MB in the beginning and 73.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 07:28:02,001 INFO L168 Benchmark]: Boogie Preprocessor took 34.06 ms. Allocated memory is still 98.6 MB. Free memory was 73.4 MB in the beginning and 72.5 MB in the end (delta: 983.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 07:28:02,002 INFO L168 Benchmark]: RCFGBuilder took 608.98 ms. Allocated memory is still 98.6 MB. Free memory was 72.5 MB in the beginning and 55.7 MB in the end (delta: 16.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-28 07:28:02,002 INFO L168 Benchmark]: TraceAbstraction took 5285.29 ms. Allocated memory was 98.6 MB in the beginning and 161.5 MB in the end (delta: 62.9 MB). Free memory was 55.0 MB in the beginning and 77.8 MB in the end (delta: -22.8 MB). Peak memory consumption was 40.6 MB. Max. memory is 16.1 GB. [2020-11-28 07:28:02,003 INFO L168 Benchmark]: Witness Printer took 82.76 ms. Allocated memory is still 161.5 MB. Free memory was 77.8 MB in the beginning and 74.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 07:28:02,005 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 98.6 MB. Free memory was 70.5 MB in the beginning and 70.5 MB in the end (delta: 25.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 280.30 ms. Allocated memory is still 98.6 MB. Free memory was 64.8 MB in the beginning and 75.0 MB in the end (delta: -10.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 47.78 ms. Allocated memory is still 98.6 MB. Free memory was 75.0 MB in the beginning and 73.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 34.06 ms. Allocated memory is still 98.6 MB. Free memory was 73.4 MB in the beginning and 72.5 MB in the end (delta: 983.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 608.98 ms. Allocated memory is still 98.6 MB. Free memory was 72.5 MB in the beginning and 55.7 MB in the end (delta: 16.7 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 5285.29 ms. Allocated memory was 98.6 MB in the beginning and 161.5 MB in the end (delta: 62.9 MB). Free memory was 55.0 MB in the beginning and 77.8 MB in the end (delta: -22.8 MB). Peak memory consumption was 40.6 MB. Max. memory is 16.1 GB. * Witness Printer took 82.76 ms. Allocated memory is still 161.5 MB. Free memory was 77.8 MB in the beginning and 74.7 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (((2 * ielen + p <= bufsize_0 + 2 * i && !(0 == cond)) && 1 <= p) && p + 2 <= bufsize_0) && 1 <= leader_len - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 17]: Loop Invariant Derived loop invariant: (((2 * ielen + p <= bufsize_0 + 2 * i && 1 <= p) && 1 <= cond) && p + 2 <= bufsize_0) && 1 <= leader_len - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: (((2 * ielen + p <= bufsize_0 + 2 * i && 1 <= p) && 1 <= cond) && 1 <= leader_len) || ((((1 <= p && i == 0) && 1 <= leader_len) && 2 * ielen + p <= bufsize_0) && bufsize + p <= bufsize_0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 24 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.0s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 47 SDtfs, 52 SDslu, 108 SDs, 0 SdLazy, 102 SolverSat, 35 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 91 GetRequests, 40 SyntacticMatches, 5 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 391 ImplicationChecksByTransitivity, 3.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 17 NumberOfFragments, 98 HoareAnnotationTreeSize, 4 FomulaSimplifications, 108 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 165 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 68 NumberOfCodeBlocks, 68 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 83 ConstructedInterpolants, 0 QuantifiedInterpolants, 6196 SizeOfPredicates, 11 NumberOfNonLiveVariables, 78 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 0/12 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...