./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-zilu/benchmark25_linear.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_c33c7952-fd47-449a-9041-51e0e29c105d/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_c33c7952-fd47-449a-9041-51e0e29c105d/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_c33c7952-fd47-449a-9041-51e0e29c105d/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_c33c7952-fd47-449a-9041-51e0e29c105d/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loop-zilu/benchmark25_linear.i -s /tmp/vcloud-vcloud-master/worker/run_dir_c33c7952-fd47-449a-9041-51e0e29c105d/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_c33c7952-fd47-449a-9041-51e0e29c105d/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 57db2827f748fdac723600595d50868896f17762 ...................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 20:55:17,742 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 20:55:17,765 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 20:55:17,817 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 20:55:17,818 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 20:55:17,819 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 20:55:17,821 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 20:55:17,823 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 20:55:17,829 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 20:55:17,835 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 20:55:17,836 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 20:55:17,839 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 20:55:17,839 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 20:55:17,843 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 20:55:17,844 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 20:55:17,846 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 20:55:17,847 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 20:55:17,848 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 20:55:17,854 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 20:55:17,861 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 20:55:17,863 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 20:55:17,864 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 20:55:17,867 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 20:55:17,868 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 20:55:17,871 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 20:55:17,872 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 20:55:17,872 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 20:55:17,874 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 20:55:17,875 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 20:55:17,881 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 20:55:17,881 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 20:55:17,882 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 20:55:17,884 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 20:55:17,885 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 20:55:17,887 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 20:55:17,887 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 20:55:17,888 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 20:55:17,888 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 20:55:17,888 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 20:55:17,890 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 20:55:17,891 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 20:55:17,895 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_c33c7952-fd47-449a-9041-51e0e29c105d/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 20:55:17,935 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 20:55:17,935 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 20:55:17,937 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 20:55:17,937 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 20:55:17,938 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 20:55:17,938 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 20:55:17,938 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 20:55:17,938 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 20:55:17,939 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 20:55:17,939 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 20:55:17,940 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 20:55:17,940 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 20:55:17,940 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 20:55:17,941 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 20:55:17,941 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 20:55:17,941 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 20:55:17,941 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 20:55:17,942 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 20:55:17,942 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 20:55:17,942 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 20:55:17,942 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 20:55:17,943 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 20:55:17,943 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 20:55:17,943 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 20:55:17,943 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 20:55:17,944 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 20:55:17,944 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 20:55:17,944 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 20:55:17,944 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 20:55:17,944 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_c33c7952-fd47-449a-9041-51e0e29c105d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_c33c7952-fd47-449a-9041-51e0e29c105d/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 57db2827f748fdac723600595d50868896f17762 [2020-11-29 20:55:18,212 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 20:55:18,246 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 20:55:18,254 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 20:55:18,255 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 20:55:18,255 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 20:55:18,256 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_c33c7952-fd47-449a-9041-51e0e29c105d/bin/uautomizer/../../sv-benchmarks/c/loop-zilu/benchmark25_linear.i [2020-11-29 20:55:18,343 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c33c7952-fd47-449a-9041-51e0e29c105d/bin/uautomizer/data/52cf7f2de/8fc2f0ef74394ab7ac74b122ffe45c17/FLAGaf55ef4d4 [2020-11-29 20:55:18,749 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 20:55:18,749 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_c33c7952-fd47-449a-9041-51e0e29c105d/sv-benchmarks/c/loop-zilu/benchmark25_linear.i [2020-11-29 20:55:18,754 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_c33c7952-fd47-449a-9041-51e0e29c105d/bin/uautomizer/data/52cf7f2de/8fc2f0ef74394ab7ac74b122ffe45c17/FLAGaf55ef4d4 [2020-11-29 20:55:19,156 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_c33c7952-fd47-449a-9041-51e0e29c105d/bin/uautomizer/data/52cf7f2de/8fc2f0ef74394ab7ac74b122ffe45c17 [2020-11-29 20:55:19,158 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 20:55:19,160 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 20:55:19,161 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 20:55:19,161 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 20:55:19,164 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 20:55:19,165 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:55:19" (1/1) ... [2020-11-29 20:55:19,167 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18bb7135 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:55:19, skipping insertion in model container [2020-11-29 20:55:19,167 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:55:19" (1/1) ... [2020-11-29 20:55:19,174 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 20:55:19,188 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 20:55:19,350 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:55:19,358 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 20:55:19,372 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:55:19,385 INFO L208 MainTranslator]: Completed translation [2020-11-29 20:55:19,386 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:55:19 WrapperNode [2020-11-29 20:55:19,386 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 20:55:19,387 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 20:55:19,387 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 20:55:19,388 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 20:55:19,395 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:55:19" (1/1) ... [2020-11-29 20:55:19,401 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:55:19" (1/1) ... [2020-11-29 20:55:19,415 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 20:55:19,416 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 20:55:19,416 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 20:55:19,416 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 20:55:19,422 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:55:19" (1/1) ... [2020-11-29 20:55:19,422 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:55:19" (1/1) ... [2020-11-29 20:55:19,423 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:55:19" (1/1) ... [2020-11-29 20:55:19,423 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:55:19" (1/1) ... [2020-11-29 20:55:19,426 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:55:19" (1/1) ... [2020-11-29 20:55:19,429 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:55:19" (1/1) ... [2020-11-29 20:55:19,430 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:55:19" (1/1) ... [2020-11-29 20:55:19,431 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 20:55:19,432 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 20:55:19,433 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 20:55:19,433 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 20:55:19,434 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:55:19" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c33c7952-fd47-449a-9041-51e0e29c105d/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 [2020-11-29 20:55:19,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 20:55:19,492 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 20:55:19,492 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 20:55:19,492 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 20:55:19,679 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 20:55:19,679 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-29 20:55:19,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:55:19 BoogieIcfgContainer [2020-11-29 20:55:19,681 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 20:55:19,692 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 20:55:19,692 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 20:55:19,695 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 20:55:19,695 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 08:55:19" (1/3) ... [2020-11-29 20:55:19,696 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7be5cbec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:55:19, skipping insertion in model container [2020-11-29 20:55:19,696 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:55:19" (2/3) ... [2020-11-29 20:55:19,697 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7be5cbec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 08:55:19, skipping insertion in model container [2020-11-29 20:55:19,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:55:19" (3/3) ... [2020-11-29 20:55:19,698 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark25_linear.i [2020-11-29 20:55:19,723 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 20:55:19,727 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-29 20:55:19,739 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-29 20:55:19,770 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 20:55:19,770 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 20:55:19,770 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 20:55:19,770 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 20:55:19,771 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 20:55:19,771 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 20:55:19,771 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 20:55:19,771 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 20:55:19,785 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2020-11-29 20:55:19,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-29 20:55:19,790 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:55:19,791 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:55:19,791 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:55:19,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:55:19,797 INFO L82 PathProgramCache]: Analyzing trace with hash 185199154, now seen corresponding path program 1 times [2020-11-29 20:55:19,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:55:19,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578662510] [2020-11-29 20:55:19,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:55:19,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:55:19,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:55:19,944 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578662510] [2020-11-29 20:55:19,945 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:55:19,946 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 20:55:19,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737332781] [2020-11-29 20:55:19,950 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 20:55:19,951 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:55:19,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 20:55:19,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 20:55:19,969 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 2 states. [2020-11-29 20:55:19,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:55:19,983 INFO L93 Difference]: Finished difference Result 22 states and 27 transitions. [2020-11-29 20:55:19,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 20:55:19,985 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-11-29 20:55:19,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:55:19,995 INFO L225 Difference]: With dead ends: 22 [2020-11-29 20:55:19,995 INFO L226 Difference]: Without dead ends: 9 [2020-11-29 20:55:19,999 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 20:55:20,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2020-11-29 20:55:20,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2020-11-29 20:55:20,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2020-11-29 20:55:20,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2020-11-29 20:55:20,037 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 8 [2020-11-29 20:55:20,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:55:20,037 INFO L481 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2020-11-29 20:55:20,037 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 20:55:20,037 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2020-11-29 20:55:20,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-29 20:55:20,038 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:55:20,038 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:55:20,038 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 20:55:20,039 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:55:20,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:55:20,040 INFO L82 PathProgramCache]: Analyzing trace with hash 181505070, now seen corresponding path program 1 times [2020-11-29 20:55:20,040 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:55:20,040 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344667200] [2020-11-29 20:55:20,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:55:20,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:55:20,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:55:20,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344667200] [2020-11-29 20:55:20,111 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:55:20,111 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 20:55:20,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398907535] [2020-11-29 20:55:20,113 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 20:55:20,113 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:55:20,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 20:55:20,114 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 20:55:20,115 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 3 states. [2020-11-29 20:55:20,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:55:20,148 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2020-11-29 20:55:20,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 20:55:20,149 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-11-29 20:55:20,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:55:20,149 INFO L225 Difference]: With dead ends: 15 [2020-11-29 20:55:20,150 INFO L226 Difference]: Without dead ends: 10 [2020-11-29 20:55:20,150 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 20:55:20,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2020-11-29 20:55:20,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-11-29 20:55:20,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-11-29 20:55:20,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2020-11-29 20:55:20,153 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 8 [2020-11-29 20:55:20,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:55:20,154 INFO L481 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2020-11-29 20:55:20,154 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 20:55:20,154 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2020-11-29 20:55:20,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-29 20:55:20,155 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:55:20,155 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:55:20,155 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 20:55:20,155 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:55:20,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:55:20,156 INFO L82 PathProgramCache]: Analyzing trace with hash 1383312870, now seen corresponding path program 1 times [2020-11-29 20:55:20,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:55:20,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487500268] [2020-11-29 20:55:20,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:55:20,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:55:20,225 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:55:20,226 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487500268] [2020-11-29 20:55:20,226 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [297847616] [2020-11-29 20:55:20,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_c33c7952-fd47-449a-9041-51e0e29c105d/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 [2020-11-29 20:55:20,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:55:20,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-29 20:55:20,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:55:20,358 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 20:55:20,359 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 20:55:20,359 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2020-11-29 20:55:20,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116602452] [2020-11-29 20:55:20,360 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 20:55:20,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:55:20,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:55:20,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:55:20,361 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand 4 states. [2020-11-29 20:55:20,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:55:20,399 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2020-11-29 20:55:20,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:55:20,400 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-11-29 20:55:20,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:55:20,401 INFO L225 Difference]: With dead ends: 16 [2020-11-29 20:55:20,401 INFO L226 Difference]: Without dead ends: 11 [2020-11-29 20:55:20,402 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:55:20,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-11-29 20:55:20,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-11-29 20:55:20,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-11-29 20:55:20,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2020-11-29 20:55:20,405 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 9 [2020-11-29 20:55:20,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:55:20,405 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2020-11-29 20:55:20,405 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 20:55:20,405 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2020-11-29 20:55:20,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 20:55:20,406 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 20:55:20,406 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 20:55:20,619 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-11-29 20:55:20,619 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 20:55:20,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:55:20,620 INFO L82 PathProgramCache]: Analyzing trace with hash -15350994, now seen corresponding path program 2 times [2020-11-29 20:55:20,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:55:20,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543494307] [2020-11-29 20:55:20,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:55:20,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:55:20,721 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-29 20:55:20,722 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543494307] [2020-11-29 20:55:20,722 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:55:20,722 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 20:55:20,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157023412] [2020-11-29 20:55:20,722 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 20:55:20,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:55:20,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 20:55:20,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:55:20,724 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 5 states. [2020-11-29 20:55:20,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:55:20,751 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2020-11-29 20:55:20,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 20:55:20,751 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-11-29 20:55:20,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 20:55:20,751 INFO L225 Difference]: With dead ends: 11 [2020-11-29 20:55:20,751 INFO L226 Difference]: Without dead ends: 0 [2020-11-29 20:55:20,752 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-11-29 20:55:20,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-29 20:55:20,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-29 20:55:20,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-29 20:55:20,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-29 20:55:20,752 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2020-11-29 20:55:20,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 20:55:20,752 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 20:55:20,753 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 20:55:20,753 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-29 20:55:20,753 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-29 20:55:20,753 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-29 20:55:20,754 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-29 20:55:20,771 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-29 20:55:20,771 INFO L274 CegarLoopResult]: For program point L21(line 21) no Hoare annotation was computed. [2020-11-29 20:55:20,772 INFO L274 CegarLoopResult]: For program point L15(lines 15 17) no Hoare annotation was computed. [2020-11-29 20:55:20,772 INFO L274 CegarLoopResult]: For program point L11(line 11) no Hoare annotation was computed. [2020-11-29 20:55:20,772 INFO L274 CegarLoopResult]: For program point L11-2(line 11) no Hoare annotation was computed. [2020-11-29 20:55:20,772 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-29 20:55:20,772 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-29 20:55:20,772 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-29 20:55:20,772 INFO L277 CegarLoopResult]: At program point L26(lines 19 27) the Hoare annotation is: true [2020-11-29 20:55:20,773 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 11) no Hoare annotation was computed. [2020-11-29 20:55:20,773 INFO L270 CegarLoopResult]: At program point L22-2(lines 22 24) the Hoare annotation is: (<= ULTIMATE.start_main_~x~0 10) [2020-11-29 20:55:20,773 INFO L274 CegarLoopResult]: For program point L22-3(lines 22 24) no Hoare annotation was computed. [2020-11-29 20:55:20,773 INFO L274 CegarLoopResult]: For program point L14(lines 14 18) no Hoare annotation was computed. [2020-11-29 20:55:20,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 08:55:20 BoogieIcfgContainer [2020-11-29 20:55:20,786 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 20:55:20,787 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 20:55:20,787 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 20:55:20,787 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 20:55:20,788 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:55:19" (3/4) ... [2020-11-29 20:55:20,791 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-29 20:55:20,800 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-11-29 20:55:20,800 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-29 20:55:20,800 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 20:55:20,800 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-29 20:55:20,834 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_c33c7952-fd47-449a-9041-51e0e29c105d/bin/uautomizer/witness.graphml [2020-11-29 20:55:20,835 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 20:55:20,836 INFO L168 Benchmark]: Toolchain (without parser) took 1675.69 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 54.2 MB in the beginning and 54.9 MB in the end (delta: -632.2 kB). Peak memory consumption was 17.5 MB. Max. memory is 16.1 GB. [2020-11-29 20:55:20,837 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 86.0 MB. Free memory was 43.3 MB in the beginning and 43.2 MB in the end (delta: 77.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:55:20,837 INFO L168 Benchmark]: CACSL2BoogieTranslator took 225.27 ms. Allocated memory is still 86.0 MB. Free memory was 53.9 MB in the beginning and 62.9 MB in the end (delta: -9.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 20:55:20,838 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.43 ms. Allocated memory is still 86.0 MB. Free memory was 62.9 MB in the beginning and 61.8 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:55:20,838 INFO L168 Benchmark]: Boogie Preprocessor took 15.44 ms. Allocated memory is still 86.0 MB. Free memory was 61.8 MB in the beginning and 60.8 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:55:20,839 INFO L168 Benchmark]: RCFGBuilder took 248.31 ms. Allocated memory is still 86.0 MB. Free memory was 60.8 MB in the beginning and 50.6 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 20:55:20,840 INFO L168 Benchmark]: TraceAbstraction took 1094.50 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 49.9 MB in the beginning and 57.5 MB in the end (delta: -7.6 MB). Peak memory consumption was 14.2 MB. Max. memory is 16.1 GB. [2020-11-29 20:55:20,840 INFO L168 Benchmark]: Witness Printer took 47.84 ms. Allocated memory is still 104.9 MB. Free memory was 57.5 MB in the beginning and 54.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:55:20,843 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 86.0 MB. Free memory was 43.3 MB in the beginning and 43.2 MB in the end (delta: 77.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 225.27 ms. Allocated memory is still 86.0 MB. Free memory was 53.9 MB in the beginning and 62.9 MB in the end (delta: -9.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 28.43 ms. Allocated memory is still 86.0 MB. Free memory was 62.9 MB in the beginning and 61.8 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 15.44 ms. Allocated memory is still 86.0 MB. Free memory was 61.8 MB in the beginning and 60.8 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 248.31 ms. Allocated memory is still 86.0 MB. Free memory was 60.8 MB in the beginning and 50.6 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 1094.50 ms. Allocated memory was 86.0 MB in the beginning and 104.9 MB in the end (delta: 18.9 MB). Free memory was 49.9 MB in the beginning and 57.5 MB in the end (delta: -7.6 MB). Peak memory consumption was 14.2 MB. Max. memory is 16.1 GB. * Witness Printer took 47.84 ms. Allocated memory is still 104.9 MB. Free memory was 57.5 MB in the beginning and 54.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 11]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 19]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: x <= 10 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.9s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 33 SDtfs, 3 SDslu, 16 SDs, 0 SdLazy, 22 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=13occurred 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 5 NumberOfFragments, 4 HoareAnnotationTreeSize, 2 FomulaSimplifications, 17 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 44 NumberOfCodeBlocks, 44 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 39 ConstructedInterpolants, 0 QuantifiedInterpolants, 530 SizeOfPredicates, 1 NumberOfNonLiveVariables, 42 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 3/5 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...