./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-examples/sanfoundry_24-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_940744e4-2dca-42e4-ac6e-d1a507d5af90/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_940744e4-2dca-42e4-ac6e-d1a507d5af90/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_940744e4-2dca-42e4-ac6e-d1a507d5af90/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_940744e4-2dca-42e4-ac6e-d1a507d5af90/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-examples/sanfoundry_24-1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_940744e4-2dca-42e4-ac6e-d1a507d5af90/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_940744e4-2dca-42e4-ac6e-d1a507d5af90/bin/uautomizer --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ccb5d8d533f248ce9cbf3b135241b499fec47cdc ................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 00:51:06,125 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:51:06,127 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:51:06,181 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:51:06,182 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:51:06,188 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:51:06,191 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:51:06,199 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:51:06,203 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:51:06,216 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:51:06,218 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:51:06,220 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:51:06,221 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:51:06,225 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:51:06,226 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:51:06,228 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:51:06,230 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:51:06,234 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:51:06,242 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:51:06,251 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:51:06,253 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:51:06,255 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:51:06,257 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:51:06,258 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:51:06,268 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:51:06,268 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:51:06,269 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:51:06,272 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:51:06,272 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:51:06,274 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:51:06,274 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:51:06,276 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:51:06,278 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:51:06,279 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:51:06,281 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:51:06,281 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:51:06,282 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:51:06,282 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:51:06,283 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:51:06,284 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:51:06,285 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:51:06,287 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_940744e4-2dca-42e4-ac6e-d1a507d5af90/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-30 00:51:06,335 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:51:06,335 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:51:06,337 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:51:06,338 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:51:06,338 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:51:06,338 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:51:06,338 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:51:06,339 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 00:51:06,339 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:51:06,339 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:51:06,340 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 00:51:06,341 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 00:51:06,341 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 00:51:06,341 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:51:06,342 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:51:06,342 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:51:06,342 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 00:51:06,342 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:51:06,343 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:51:06,343 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 00:51:06,343 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 00:51:06,343 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:51:06,344 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:51:06,344 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 00:51:06,344 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 00:51:06,345 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 00:51:06,345 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 00:51:06,345 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 00:51:06,345 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:51:06,346 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_940744e4-2dca-42e4-ac6e-d1a507d5af90/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_940744e4-2dca-42e4-ac6e-d1a507d5af90/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ccb5d8d533f248ce9cbf3b135241b499fec47cdc [2020-11-30 00:51:06,660 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:51:06,700 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:51:06,705 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:51:06,706 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:51:06,707 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:51:06,709 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_940744e4-2dca-42e4-ac6e-d1a507d5af90/bin/uautomizer/../../sv-benchmarks/c/array-examples/sanfoundry_24-1.i [2020-11-30 00:51:06,783 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_940744e4-2dca-42e4-ac6e-d1a507d5af90/bin/uautomizer/data/10d4d4ddd/1cf1fbe80e7f428a92452618cd1e81ab/FLAG95b190021 [2020-11-30 00:51:07,336 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:51:07,336 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_940744e4-2dca-42e4-ac6e-d1a507d5af90/sv-benchmarks/c/array-examples/sanfoundry_24-1.i [2020-11-30 00:51:07,353 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_940744e4-2dca-42e4-ac6e-d1a507d5af90/bin/uautomizer/data/10d4d4ddd/1cf1fbe80e7f428a92452618cd1e81ab/FLAG95b190021 [2020-11-30 00:51:07,677 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_940744e4-2dca-42e4-ac6e-d1a507d5af90/bin/uautomizer/data/10d4d4ddd/1cf1fbe80e7f428a92452618cd1e81ab [2020-11-30 00:51:07,681 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:51:07,684 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:51:07,691 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:51:07,691 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:51:07,695 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:51:07,696 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:51:07" (1/1) ... [2020-11-30 00:51:07,698 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bd63ac5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:51:07, skipping insertion in model container [2020-11-30 00:51:07,698 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:51:07" (1/1) ... [2020-11-30 00:51:07,706 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:51:07,719 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:51:07,916 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:51:07,924 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:51:07,944 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:51:07,959 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:51:07,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:51:07 WrapperNode [2020-11-30 00:51:07,960 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:51:07,961 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:51:07,962 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:51:07,962 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:51:07,974 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:51:07" (1/1) ... [2020-11-30 00:51:08,003 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:51:07" (1/1) ... [2020-11-30 00:51:08,027 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:51:08,028 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:51:08,029 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:51:08,029 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:51:08,038 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:51:07" (1/1) ... [2020-11-30 00:51:08,039 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:51:07" (1/1) ... [2020-11-30 00:51:08,041 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:51:07" (1/1) ... [2020-11-30 00:51:08,042 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:51:07" (1/1) ... [2020-11-30 00:51:08,048 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:51:07" (1/1) ... [2020-11-30 00:51:08,054 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:51:07" (1/1) ... [2020-11-30 00:51:08,055 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:51:07" (1/1) ... [2020-11-30 00:51:08,058 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:51:08,059 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:51:08,059 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:51:08,060 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:51:08,061 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:51:07" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_940744e4-2dca-42e4-ac6e-d1a507d5af90/bin/uautomizer/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 [2020-11-30 00:51:08,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 00:51:08,143 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:51:08,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-30 00:51:08,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:51:08,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:51:08,144 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-30 00:51:08,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-30 00:51:08,416 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:51:08,416 INFO L298 CfgBuilder]: Removed 19 assume(true) statements. [2020-11-30 00:51:08,418 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:51:08 BoogieIcfgContainer [2020-11-30 00:51:08,418 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:51:08,432 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 00:51:08,432 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 00:51:08,436 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 00:51:08,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 12:51:07" (1/3) ... [2020-11-30 00:51:08,437 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@355e68a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:51:08, skipping insertion in model container [2020-11-30 00:51:08,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:51:07" (2/3) ... [2020-11-30 00:51:08,438 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@355e68a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:51:08, skipping insertion in model container [2020-11-30 00:51:08,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:51:08" (3/3) ... [2020-11-30 00:51:08,440 INFO L111 eAbstractionObserver]: Analyzing ICFG sanfoundry_24-1.i [2020-11-30 00:51:08,452 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 00:51:08,457 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-30 00:51:08,470 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-30 00:51:08,499 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 00:51:08,499 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 00:51:08,499 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 00:51:08,500 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:51:08,500 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:51:08,500 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 00:51:08,500 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:51:08,501 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 00:51:08,523 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2020-11-30 00:51:08,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-30 00:51:08,528 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:51:08,529 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:51:08,530 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:51:08,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:51:08,536 INFO L82 PathProgramCache]: Analyzing trace with hash 1968805169, now seen corresponding path program 1 times [2020-11-30 00:51:08,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:51:08,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825387867] [2020-11-30 00:51:08,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:51:08,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:51:08,841 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:51:08,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825387867] [2020-11-30 00:51:08,843 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:51:08,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-30 00:51:08,844 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424814477] [2020-11-30 00:51:08,848 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 00:51:08,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:51:08,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 00:51:08,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:51:08,867 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 5 states. [2020-11-30 00:51:09,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:51:09,042 INFO L93 Difference]: Finished difference Result 82 states and 117 transitions. [2020-11-30 00:51:09,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 00:51:09,046 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-11-30 00:51:09,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:51:09,056 INFO L225 Difference]: With dead ends: 82 [2020-11-30 00:51:09,062 INFO L226 Difference]: Without dead ends: 44 [2020-11-30 00:51:09,070 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:51:09,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-11-30 00:51:09,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 26. [2020-11-30 00:51:09,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-11-30 00:51:09,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2020-11-30 00:51:09,110 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 10 [2020-11-30 00:51:09,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:51:09,110 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2020-11-30 00:51:09,111 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 00:51:09,111 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2020-11-30 00:51:09,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-30 00:51:09,112 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:51:09,112 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:51:09,112 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 00:51:09,113 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:51:09,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:51:09,114 INFO L82 PathProgramCache]: Analyzing trace with hash 1313607603, now seen corresponding path program 1 times [2020-11-30 00:51:09,114 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:51:09,114 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444151000] [2020-11-30 00:51:09,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:51:09,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:51:09,306 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-30 00:51:09,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444151000] [2020-11-30 00:51:09,307 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:51:09,307 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 00:51:09,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586545372] [2020-11-30 00:51:09,309 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 00:51:09,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:51:09,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:51:09,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:51:09,311 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 4 states. [2020-11-30 00:51:09,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:51:09,420 INFO L93 Difference]: Finished difference Result 33 states and 40 transitions. [2020-11-30 00:51:09,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 00:51:09,421 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-11-30 00:51:09,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:51:09,422 INFO L225 Difference]: With dead ends: 33 [2020-11-30 00:51:09,422 INFO L226 Difference]: Without dead ends: 29 [2020-11-30 00:51:09,423 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:51:09,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-11-30 00:51:09,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 22. [2020-11-30 00:51:09,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-11-30 00:51:09,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2020-11-30 00:51:09,429 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 12 [2020-11-30 00:51:09,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:51:09,429 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2020-11-30 00:51:09,429 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 00:51:09,429 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2020-11-30 00:51:09,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-30 00:51:09,430 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:51:09,431 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 00:51:09,431 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 00:51:09,431 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:51:09,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:51:09,432 INFO L82 PathProgramCache]: Analyzing trace with hash -874632589, now seen corresponding path program 1 times [2020-11-30 00:51:09,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:51:09,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963878072] [2020-11-30 00:51:09,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:51:09,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:51:09,575 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-30 00:51:09,576 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963878072] [2020-11-30 00:51:09,576 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:51:09,576 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 00:51:09,577 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523485538] [2020-11-30 00:51:09,577 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 00:51:09,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:51:09,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:51:09,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:51:09,579 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand 4 states. [2020-11-30 00:51:09,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:51:09,681 INFO L93 Difference]: Finished difference Result 29 states and 36 transitions. [2020-11-30 00:51:09,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 00:51:09,682 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-11-30 00:51:09,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:51:09,682 INFO L225 Difference]: With dead ends: 29 [2020-11-30 00:51:09,683 INFO L226 Difference]: Without dead ends: 0 [2020-11-30 00:51:09,683 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:51:09,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-30 00:51:09,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-30 00:51:09,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-30 00:51:09,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 00:51:09,684 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2020-11-30 00:51:09,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:51:09,685 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 00:51:09,685 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 00:51:09,685 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-30 00:51:09,685 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-30 00:51:09,686 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-30 00:51:09,688 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-30 00:51:09,709 INFO L274 CegarLoopResult]: For program point L27-2(lines 27 30) no Hoare annotation was computed. [2020-11-30 00:51:09,709 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-30 00:51:09,709 INFO L277 CegarLoopResult]: At program point L27-3(lines 27 30) the Hoare annotation is: true [2020-11-30 00:51:09,710 INFO L274 CegarLoopResult]: For program point L27-4(lines 27 30) no Hoare annotation was computed. [2020-11-30 00:51:09,710 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-30 00:51:09,710 INFO L274 CegarLoopResult]: For program point L32-2(lines 32 38) no Hoare annotation was computed. [2020-11-30 00:51:09,710 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-30 00:51:09,710 INFO L277 CegarLoopResult]: At program point L32-3(lines 32 38) the Hoare annotation is: true [2020-11-30 00:51:09,710 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-30 00:51:09,710 INFO L274 CegarLoopResult]: For program point L32-4(lines 32 38) no Hoare annotation was computed. [2020-11-30 00:51:09,710 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-30 00:51:09,710 INFO L274 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-11-30 00:51:09,711 INFO L274 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-11-30 00:51:09,711 INFO L274 CegarLoopResult]: For program point L12-3(line 12) no Hoare annotation was computed. [2020-11-30 00:51:09,711 INFO L274 CegarLoopResult]: For program point L41(lines 41 44) no Hoare annotation was computed. [2020-11-30 00:51:09,711 INFO L274 CegarLoopResult]: For program point L12-4(line 12) no Hoare annotation was computed. [2020-11-30 00:51:09,711 INFO L274 CegarLoopResult]: For program point L12-6(line 12) no Hoare annotation was computed. [2020-11-30 00:51:09,711 INFO L274 CegarLoopResult]: For program point L12-7(line 12) no Hoare annotation was computed. [2020-11-30 00:51:09,711 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-30 00:51:09,711 INFO L277 CegarLoopResult]: At program point L46(lines 21 47) the Hoare annotation is: true [2020-11-30 00:51:09,711 INFO L274 CegarLoopResult]: For program point L34(lines 34 37) no Hoare annotation was computed. [2020-11-30 00:51:09,711 INFO L274 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2020-11-30 00:51:09,712 INFO L274 CegarLoopResult]: For program point L14-1(line 14) no Hoare annotation was computed. [2020-11-30 00:51:09,712 INFO L274 CegarLoopResult]: For program point L14-3(lines 1 47) no Hoare annotation was computed. [2020-11-30 00:51:09,712 INFO L274 CegarLoopResult]: For program point L14-4(line 14) no Hoare annotation was computed. [2020-11-30 00:51:09,712 INFO L274 CegarLoopResult]: For program point L14-5(line 14) no Hoare annotation was computed. [2020-11-30 00:51:09,712 INFO L274 CegarLoopResult]: For program point L14-7(lines 1 47) no Hoare annotation was computed. [2020-11-30 00:51:09,712 INFO L274 CegarLoopResult]: For program point L39-2(lines 39 45) no Hoare annotation was computed. [2020-11-30 00:51:09,712 INFO L277 CegarLoopResult]: At program point L39-3(lines 39 45) the Hoare annotation is: true [2020-11-30 00:51:09,712 INFO L274 CegarLoopResult]: For program point L39-4(lines 39 45) no Hoare annotation was computed. [2020-11-30 00:51:09,721 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 12:51:09 BoogieIcfgContainer [2020-11-30 00:51:09,721 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 00:51:09,722 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:51:09,722 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:51:09,723 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:51:09,723 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:51:08" (3/4) ... [2020-11-30 00:51:09,727 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-30 00:51:09,740 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2020-11-30 00:51:09,740 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-30 00:51:09,740 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 00:51:09,741 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 00:51:09,797 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_940744e4-2dca-42e4-ac6e-d1a507d5af90/bin/uautomizer/witness.graphml [2020-11-30 00:51:09,797 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:51:09,799 INFO L168 Benchmark]: Toolchain (without parser) took 2114.00 ms. Allocated memory was 115.3 MB in the beginning and 138.4 MB in the end (delta: 23.1 MB). Free memory was 90.3 MB in the beginning and 67.9 MB in the end (delta: 22.4 MB). Peak memory consumption was 46.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:51:09,800 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 115.3 MB. Free memory is still 73.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:51:09,801 INFO L168 Benchmark]: CACSL2BoogieTranslator took 269.86 ms. Allocated memory is still 115.3 MB. Free memory was 90.0 MB in the beginning and 90.5 MB in the end (delta: -431.9 kB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:51:09,801 INFO L168 Benchmark]: Boogie Procedure Inliner took 66.33 ms. Allocated memory is still 115.3 MB. Free memory was 90.5 MB in the beginning and 88.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:51:09,802 INFO L168 Benchmark]: Boogie Preprocessor took 29.86 ms. Allocated memory is still 115.3 MB. Free memory was 88.8 MB in the beginning and 87.7 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:51:09,802 INFO L168 Benchmark]: RCFGBuilder took 359.14 ms. Allocated memory is still 115.3 MB. Free memory was 87.4 MB in the beginning and 72.4 MB in the end (delta: 15.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-30 00:51:09,803 INFO L168 Benchmark]: TraceAbstraction took 1289.58 ms. Allocated memory was 115.3 MB in the beginning and 138.4 MB in the end (delta: 23.1 MB). Free memory was 72.0 MB in the beginning and 71.3 MB in the end (delta: 716.2 kB). Peak memory consumption was 25.3 MB. Max. memory is 16.1 GB. [2020-11-30 00:51:09,804 INFO L168 Benchmark]: Witness Printer took 74.99 ms. Allocated memory is still 138.4 MB. Free memory was 70.8 MB in the beginning and 67.9 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-30 00:51:09,807 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 115.3 MB. Free memory is still 73.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 269.86 ms. Allocated memory is still 115.3 MB. Free memory was 90.0 MB in the beginning and 90.5 MB in the end (delta: -431.9 kB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 66.33 ms. Allocated memory is still 115.3 MB. Free memory was 90.5 MB in the beginning and 88.8 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 29.86 ms. Allocated memory is still 115.3 MB. Free memory was 88.8 MB in the beginning and 87.7 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 359.14 ms. Allocated memory is still 115.3 MB. Free memory was 87.4 MB in the beginning and 72.4 MB in the end (delta: 15.0 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1289.58 ms. Allocated memory was 115.3 MB in the beginning and 138.4 MB in the end (delta: 23.1 MB). Free memory was 72.0 MB in the beginning and 71.3 MB in the end (delta: 716.2 kB). Peak memory consumption was 25.3 MB. Max. memory is 16.1 GB. * Witness Printer took 74.99 ms. Allocated memory is still 138.4 MB. Free memory was 70.8 MB in the beginning and 67.9 MB in the end (delta: 2.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 30 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.1s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 75 SDtfs, 59 SDslu, 81 SDs, 0 SdLazy, 97 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred 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, 25 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 14 NumberOfFragments, 4 HoareAnnotationTreeSize, 4 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 39 NumberOfCodeBlocks, 39 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 998 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 3/3 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...