./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-simple/id_b3_o5-2.c --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_35d286af-9961-4663-b170-adbc7516343a/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_35d286af-9961-4663-b170-adbc7516343a/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_35d286af-9961-4663-b170-adbc7516343a/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_35d286af-9961-4663-b170-adbc7516343a/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive-simple/id_b3_o5-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_35d286af-9961-4663-b170-adbc7516343a/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_35d286af-9961-4663-b170-adbc7516343a/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 849d3022dabab2c0a7f0738e4a7087eca0185d61 .......................................................................................................................................................................................................................................................................................................................................................................................................................... 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 03:03:33,243 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:03:33,246 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:03:33,332 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:03:33,333 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:03:33,339 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:03:33,342 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:03:33,357 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:03:33,360 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:03:33,367 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:03:33,372 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:03:33,375 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:03:33,376 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:03:33,380 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:03:33,382 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:03:33,385 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:03:33,386 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:03:33,391 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:03:33,395 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:03:33,404 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:03:33,407 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:03:33,408 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:03:33,411 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:03:33,413 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:03:33,423 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:03:33,424 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:03:33,424 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:03:33,427 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:03:33,428 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:03:33,429 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:03:33,430 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:03:33,431 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:03:33,433 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:03:33,435 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:03:33,436 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:03:33,437 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:03:33,438 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:03:33,438 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:03:33,438 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:03:33,440 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:03:33,442 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:03:33,445 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_35d286af-9961-4663-b170-adbc7516343a/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 03:03:33,489 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:03:33,490 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:03:33,492 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:03:33,493 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:03:33,493 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:03:33,493 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:03:33,494 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:03:33,494 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:03:33,494 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:03:33,494 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:03:33,496 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:03:33,496 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:03:33,496 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:03:33,497 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:03:33,497 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:03:33,497 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:03:33,497 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:03:33,498 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:03:33,498 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:03:33,498 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:03:33,499 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:03:33,499 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:03:33,499 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:03:33,500 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:03:33,500 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:03:33,500 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:03:33,500 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:03:33,501 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:03:33,501 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:03:33,501 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_35d286af-9961-4663-b170-adbc7516343a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_35d286af-9961-4663-b170-adbc7516343a/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 849d3022dabab2c0a7f0738e4a7087eca0185d61 [2020-11-28 03:03:33,870 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:03:33,914 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:03:33,917 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:03:33,919 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:03:33,923 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:03:33,924 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_35d286af-9961-4663-b170-adbc7516343a/bin/uautomizer/../../sv-benchmarks/c/recursive-simple/id_b3_o5-2.c [2020-11-28 03:03:34,024 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_35d286af-9961-4663-b170-adbc7516343a/bin/uautomizer/data/9ce9c3519/37bb1bb8dba54ebb86a0305a2cfee38d/FLAGfec610eaa [2020-11-28 03:03:34,580 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:03:34,581 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_35d286af-9961-4663-b170-adbc7516343a/sv-benchmarks/c/recursive-simple/id_b3_o5-2.c [2020-11-28 03:03:34,592 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_35d286af-9961-4663-b170-adbc7516343a/bin/uautomizer/data/9ce9c3519/37bb1bb8dba54ebb86a0305a2cfee38d/FLAGfec610eaa [2020-11-28 03:03:34,930 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_35d286af-9961-4663-b170-adbc7516343a/bin/uautomizer/data/9ce9c3519/37bb1bb8dba54ebb86a0305a2cfee38d [2020-11-28 03:03:34,933 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:03:34,935 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:03:34,940 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:03:34,940 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:03:34,945 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:03:34,947 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:03:34" (1/1) ... [2020-11-28 03:03:34,949 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53015a9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:34, skipping insertion in model container [2020-11-28 03:03:34,949 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:03:34" (1/1) ... [2020-11-28 03:03:34,962 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:03:34,980 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:03:35,196 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:03:35,209 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:03:35,227 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:03:35,243 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:03:35,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:35 WrapperNode [2020-11-28 03:03:35,244 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:03:35,246 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:03:35,246 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:03:35,246 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:03:35,256 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:35" (1/1) ... [2020-11-28 03:03:35,264 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:35" (1/1) ... [2020-11-28 03:03:35,283 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:03:35,284 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:03:35,285 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:03:35,285 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:03:35,295 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:35" (1/1) ... [2020-11-28 03:03:35,295 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:35" (1/1) ... [2020-11-28 03:03:35,297 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:35" (1/1) ... [2020-11-28 03:03:35,297 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:35" (1/1) ... [2020-11-28 03:03:35,301 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:35" (1/1) ... [2020-11-28 03:03:35,307 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:35" (1/1) ... [2020-11-28 03:03:35,308 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:35" (1/1) ... [2020-11-28 03:03:35,310 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:03:35,311 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:03:35,312 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:03:35,312 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:03:35,315 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:35" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_35d286af-9961-4663-b170-adbc7516343a/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 [2020-11-28 03:03:35,388 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:03:35,389 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:03:35,389 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:03:35,390 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-11-28 03:03:35,391 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-11-28 03:03:35,391 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:03:35,925 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:03:35,928 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-28 03:03:35,931 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:03:35 BoogieIcfgContainer [2020-11-28 03:03:35,932 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:03:35,935 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:03:35,935 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:03:35,939 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:03:35,940 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:03:34" (1/3) ... [2020-11-28 03:03:35,941 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5233cef7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:03:35, skipping insertion in model container [2020-11-28 03:03:35,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:03:35" (2/3) ... [2020-11-28 03:03:35,942 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5233cef7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:03:35, skipping insertion in model container [2020-11-28 03:03:35,943 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:03:35" (3/3) ... [2020-11-28 03:03:35,944 INFO L111 eAbstractionObserver]: Analyzing ICFG id_b3_o5-2.c [2020-11-28 03:03:35,961 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:03:35,966 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 03:03:35,980 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 03:03:36,020 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:03:36,020 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:03:36,020 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:03:36,021 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:03:36,021 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:03:36,021 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:03:36,021 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:03:36,021 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:03:36,044 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-11-28 03:03:36,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 03:03:36,050 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:03:36,051 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:03:36,052 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:03:36,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:03:36,060 INFO L82 PathProgramCache]: Analyzing trace with hash -948071546, now seen corresponding path program 1 times [2020-11-28 03:03:36,071 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:03:36,072 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293816958] [2020-11-28 03:03:36,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:03:36,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:03:36,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:03:36,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:03:36,371 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 03:03:36,371 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293816958] [2020-11-28 03:03:36,372 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:03:36,373 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 03:03:36,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711712279] [2020-11-28 03:03:36,378 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:03:36,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:03:36,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:03:36,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:03:36,396 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 5 states. [2020-11-28 03:03:36,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:03:36,462 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2020-11-28 03:03:36,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:03:36,464 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-11-28 03:03:36,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:03:36,473 INFO L225 Difference]: With dead ends: 30 [2020-11-28 03:03:36,473 INFO L226 Difference]: Without dead ends: 16 [2020-11-28 03:03:36,476 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:03:36,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-11-28 03:03:36,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-11-28 03:03:36,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-28 03:03:36,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2020-11-28 03:03:36,521 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 10 [2020-11-28 03:03:36,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:03:36,522 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2020-11-28 03:03:36,522 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:03:36,522 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2020-11-28 03:03:36,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-28 03:03:36,524 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:03:36,524 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:03:36,524 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:03:36,525 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:03:36,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:03:36,526 INFO L82 PathProgramCache]: Analyzing trace with hash 1034741369, now seen corresponding path program 1 times [2020-11-28 03:03:36,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:03:36,526 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032599489] [2020-11-28 03:03:36,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:03:36,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:03:36,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:03:36,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:03:36,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:03:36,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:03:36,731 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-28 03:03:36,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032599489] [2020-11-28 03:03:36,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:03:36,735 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 03:03:36,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978291204] [2020-11-28 03:03:36,736 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:03:36,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:03:36,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:03:36,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:03:36,742 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 5 states. [2020-11-28 03:03:36,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:03:36,770 INFO L93 Difference]: Finished difference Result 28 states and 33 transitions. [2020-11-28 03:03:36,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:03:36,772 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-11-28 03:03:36,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:03:36,791 INFO L225 Difference]: With dead ends: 28 [2020-11-28 03:03:36,791 INFO L226 Difference]: Without dead ends: 20 [2020-11-28 03:03:36,793 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:03:36,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-11-28 03:03:36,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2020-11-28 03:03:36,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-28 03:03:36,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2020-11-28 03:03:36,806 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 17 [2020-11-28 03:03:36,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:03:36,807 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2020-11-28 03:03:36,807 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:03:36,808 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2020-11-28 03:03:36,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-28 03:03:36,810 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:03:36,811 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:03:36,811 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 03:03:36,811 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:03:36,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:03:36,813 INFO L82 PathProgramCache]: Analyzing trace with hash 1063370520, now seen corresponding path program 1 times [2020-11-28 03:03:36,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:03:36,814 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833118103] [2020-11-28 03:03:36,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:03:36,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:03:36,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:03:36,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:03:36,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:03:36,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:03:37,003 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-28 03:03:37,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833118103] [2020-11-28 03:03:37,004 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660493410] [2020-11-28 03:03:37,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_35d286af-9961-4663-b170-adbc7516343a/bin/uautomizer/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 03:03:37,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:03:37,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-28 03:03:37,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:03:37,234 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-28 03:03:37,234 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:03:37,234 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2020-11-28 03:03:37,235 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984280044] [2020-11-28 03:03:37,235 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-28 03:03:37,236 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:03:37,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-28 03:03:37,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-11-28 03:03:37,237 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 9 states. [2020-11-28 03:03:37,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:03:37,308 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2020-11-28 03:03:37,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-28 03:03:37,309 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 17 [2020-11-28 03:03:37,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:03:37,311 INFO L225 Difference]: With dead ends: 24 [2020-11-28 03:03:37,311 INFO L226 Difference]: Without dead ends: 20 [2020-11-28 03:03:37,312 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-11-28 03:03:37,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-11-28 03:03:37,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-11-28 03:03:37,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-11-28 03:03:37,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2020-11-28 03:03:37,318 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 17 [2020-11-28 03:03:37,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:03:37,319 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2020-11-28 03:03:37,319 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-28 03:03:37,319 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2020-11-28 03:03:37,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-28 03:03:37,320 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:03:37,320 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:03:37,542 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-11-28 03:03:37,543 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:03:37,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:03:37,544 INFO L82 PathProgramCache]: Analyzing trace with hash 758694231, now seen corresponding path program 1 times [2020-11-28 03:03:37,544 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:03:37,544 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259514897] [2020-11-28 03:03:37,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:03:37,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:03:37,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:03:37,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:03:37,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:03:37,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:03:37,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-11-28 03:03:37,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:03:37,677 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-28 03:03:37,678 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259514897] [2020-11-28 03:03:37,691 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:03:37,691 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 03:03:37,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812490152] [2020-11-28 03:03:37,692 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:03:37,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:03:37,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:03:37,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:03:37,693 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 5 states. [2020-11-28 03:03:37,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:03:37,713 INFO L93 Difference]: Finished difference Result 20 states and 22 transitions. [2020-11-28 03:03:37,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:03:37,714 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2020-11-28 03:03:37,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:03:37,714 INFO L225 Difference]: With dead ends: 20 [2020-11-28 03:03:37,715 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 03:03:37,715 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:03:37,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 03:03:37,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 03:03:37,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 03:03:37,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 03:03:37,716 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2020-11-28 03:03:37,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:03:37,717 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:03:37,717 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:03:37,717 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 03:03:37,717 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 03:03:37,718 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 03:03:37,720 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 03:03:37,737 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 03:03:37,738 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-28 03:03:37,738 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 03:03:37,738 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-28 03:03:37,738 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-28 03:03:37,738 INFO L274 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-11-28 03:03:37,738 INFO L274 CegarLoopResult]: For program point L16(lines 16 18) no Hoare annotation was computed. [2020-11-28 03:03:37,739 INFO L277 CegarLoopResult]: At program point L15(line 15) the Hoare annotation is: true [2020-11-28 03:03:37,739 INFO L274 CegarLoopResult]: For program point L15-1(line 15) no Hoare annotation was computed. [2020-11-28 03:03:37,739 INFO L274 CegarLoopResult]: For program point L13(lines 13 19) no Hoare annotation was computed. [2020-11-28 03:03:37,739 INFO L274 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-11-28 03:03:37,739 INFO L274 CegarLoopResult]: For program point idFINAL(lines 6 11) no Hoare annotation was computed. [2020-11-28 03:03:37,740 INFO L274 CegarLoopResult]: For program point idEXIT(lines 6 11) no Hoare annotation was computed. [2020-11-28 03:03:37,740 INFO L274 CegarLoopResult]: For program point L9(line 9) no Hoare annotation was computed. [2020-11-28 03:03:37,740 INFO L277 CegarLoopResult]: At program point L8(line 8) the Hoare annotation is: true [2020-11-28 03:03:37,740 INFO L277 CegarLoopResult]: At program point idENTRY(lines 6 11) the Hoare annotation is: true [2020-11-28 03:03:37,741 INFO L274 CegarLoopResult]: For program point L7(line 7) no Hoare annotation was computed. [2020-11-28 03:03:37,741 INFO L274 CegarLoopResult]: For program point L8-1(line 8) no Hoare annotation was computed. [2020-11-28 03:03:37,748 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:03:37 BoogieIcfgContainer [2020-11-28 03:03:37,749 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:03:37,749 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:03:37,749 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:03:37,750 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:03:37,750 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:03:35" (3/4) ... [2020-11-28 03:03:37,754 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 03:03:37,761 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure id [2020-11-28 03:03:37,771 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-11-28 03:03:37,772 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-28 03:03:37,772 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:03:37,772 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:03:37,823 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_35d286af-9961-4663-b170-adbc7516343a/bin/uautomizer/witness.graphml [2020-11-28 03:03:37,824 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:03:37,826 INFO L168 Benchmark]: Toolchain (without parser) took 2889.83 ms. Allocated memory is still 100.7 MB. Free memory was 64.2 MB in the beginning and 35.2 MB in the end (delta: 28.9 MB). Peak memory consumption was 28.5 MB. Max. memory is 16.1 GB. [2020-11-28 03:03:37,827 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 100.7 MB. Free memory is still 80.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:03:37,827 INFO L168 Benchmark]: CACSL2BoogieTranslator took 304.90 ms. Allocated memory is still 100.7 MB. Free memory was 63.9 MB in the beginning and 77.8 MB in the end (delta: -13.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:03:37,828 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.05 ms. Allocated memory is still 100.7 MB. Free memory was 77.8 MB in the beginning and 76.7 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:03:37,829 INFO L168 Benchmark]: Boogie Preprocessor took 26.13 ms. Allocated memory is still 100.7 MB. Free memory was 76.7 MB in the beginning and 75.6 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:03:37,830 INFO L168 Benchmark]: RCFGBuilder took 621.14 ms. Allocated memory is still 100.7 MB. Free memory was 75.6 MB in the beginning and 64.5 MB in the end (delta: 11.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 03:03:37,830 INFO L168 Benchmark]: TraceAbstraction took 1813.90 ms. Allocated memory is still 100.7 MB. Free memory was 63.8 MB in the beginning and 37.9 MB in the end (delta: 26.0 MB). Peak memory consumption was 29.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:03:37,831 INFO L168 Benchmark]: Witness Printer took 74.79 ms. Allocated memory is still 100.7 MB. Free memory was 37.9 MB in the beginning and 35.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:03:37,835 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 100.7 MB. Free memory is still 80.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 304.90 ms. Allocated memory is still 100.7 MB. Free memory was 63.9 MB in the beginning and 77.8 MB in the end (delta: -13.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.05 ms. Allocated memory is still 100.7 MB. Free memory was 77.8 MB in the beginning and 76.7 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.13 ms. Allocated memory is still 100.7 MB. Free memory was 76.7 MB in the beginning and 75.6 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 621.14 ms. Allocated memory is still 100.7 MB. Free memory was 75.6 MB in the beginning and 64.5 MB in the end (delta: 11.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1813.90 ms. Allocated memory is still 100.7 MB. Free memory was 63.8 MB in the beginning and 37.9 MB in the end (delta: 26.0 MB). Peak memory consumption was 29.1 MB. Max. memory is 16.1 GB. * Witness Printer took 74.79 ms. Allocated memory is still 100.7 MB. Free memory was 37.9 MB in the beginning and 35.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.7s, OverallIterations: 4, TraceHistogramMax: 3, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 61 SDtfs, 7 SDslu, 208 SDs, 0 SdLazy, 60 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 57 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=3, 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, 4 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 5 PreInvPairs, 5 NumberOfFragments, 3 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 85 NumberOfCodeBlocks, 85 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 80 ConstructedInterpolants, 0 QuantifiedInterpolants, 2274 SizeOfPredicates, 2 NumberOfNonLiveVariables, 72 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 23/27 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...