./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursive-with-pointer/simple-recursive.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa8d5d6-dd9f-44f3-9954-b0209ce2f631/bin/uautomizer-GMMbpWq8iD/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa8d5d6-dd9f-44f3-9954-b0209ce2f631/bin/uautomizer-GMMbpWq8iD/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa8d5d6-dd9f-44f3-9954-b0209ce2f631/bin/uautomizer-GMMbpWq8iD/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa8d5d6-dd9f-44f3-9954-b0209ce2f631/bin/uautomizer-GMMbpWq8iD/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursive-with-pointer/simple-recursive.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa8d5d6-dd9f-44f3-9954-b0209ce2f631/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa8d5d6-dd9f-44f3-9954-b0209ce2f631/bin/uautomizer-GMMbpWq8iD --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 e4b2b33802a1e3212162c0e55c40efaad08f7abe5e8690f0efef5fec80921b38 ................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-28 22:55:10,719 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 22:55:10,722 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 22:55:10,777 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 22:55:10,778 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 22:55:10,783 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 22:55:10,786 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 22:55:10,789 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 22:55:10,791 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 22:55:10,792 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 22:55:10,793 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 22:55:10,794 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 22:55:10,795 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 22:55:10,796 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 22:55:10,798 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 22:55:10,799 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 22:55:10,800 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 22:55:10,801 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 22:55:10,803 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 22:55:10,806 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 22:55:10,807 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 22:55:10,809 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 22:55:10,810 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 22:55:10,811 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 22:55:10,815 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 22:55:10,815 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 22:55:10,816 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 22:55:10,817 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 22:55:10,817 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 22:55:10,819 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 22:55:10,819 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 22:55:10,820 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 22:55:10,821 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 22:55:10,822 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 22:55:10,823 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 22:55:10,823 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 22:55:10,824 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 22:55:10,824 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 22:55:10,824 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 22:55:10,825 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 22:55:10,826 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 22:55:10,827 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa8d5d6-dd9f-44f3-9954-b0209ce2f631/bin/uautomizer-GMMbpWq8iD/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 22:55:10,853 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 22:55:10,854 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 22:55:10,855 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 22:55:10,855 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 22:55:10,856 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 22:55:10,857 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 22:55:10,857 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 22:55:10,858 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 22:55:10,858 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 22:55:10,858 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 22:55:10,859 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 22:55:10,860 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 22:55:10,860 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 22:55:10,860 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 22:55:10,860 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 22:55:10,861 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 22:55:10,861 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 22:55:10,861 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 22:55:10,861 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 22:55:10,862 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 22:55:10,862 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 22:55:10,862 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 22:55:10,862 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 22:55:10,863 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 22:55:10,863 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 22:55:10,863 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 22:55:10,863 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 22:55:10,864 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 22:55:10,864 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 22:55:10,865 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 22:55:10,866 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 22:55:10,866 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 22:55:10,866 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_worker_vcloud-master_on_vcloud-master/run_dir_daa8d5d6-dd9f-44f3-9954-b0209ce2f631/bin/uautomizer-GMMbpWq8iD/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa8d5d6-dd9f-44f3-9954-b0209ce2f631/bin/uautomizer-GMMbpWq8iD Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e4b2b33802a1e3212162c0e55c40efaad08f7abe5e8690f0efef5fec80921b38 [2021-10-28 22:55:11,165 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 22:55:11,192 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 22:55:11,197 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 22:55:11,198 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 22:55:11,199 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 22:55:11,200 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa8d5d6-dd9f-44f3-9954-b0209ce2f631/bin/uautomizer-GMMbpWq8iD/../../sv-benchmarks/c/recursive-with-pointer/simple-recursive.c [2021-10-28 22:55:11,286 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa8d5d6-dd9f-44f3-9954-b0209ce2f631/bin/uautomizer-GMMbpWq8iD/data/4884d6a07/454cfa16232a4faa948f5e7a8c866877/FLAG657002b84 [2021-10-28 22:55:11,734 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 22:55:11,735 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa8d5d6-dd9f-44f3-9954-b0209ce2f631/sv-benchmarks/c/recursive-with-pointer/simple-recursive.c [2021-10-28 22:55:11,744 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa8d5d6-dd9f-44f3-9954-b0209ce2f631/bin/uautomizer-GMMbpWq8iD/data/4884d6a07/454cfa16232a4faa948f5e7a8c866877/FLAG657002b84 [2021-10-28 22:55:12,128 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa8d5d6-dd9f-44f3-9954-b0209ce2f631/bin/uautomizer-GMMbpWq8iD/data/4884d6a07/454cfa16232a4faa948f5e7a8c866877 [2021-10-28 22:55:12,130 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 22:55:12,131 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 22:55:12,139 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 22:55:12,139 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 22:55:12,142 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 22:55:12,143 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:55:12" (1/1) ... [2021-10-28 22:55:12,144 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76e527fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:55:12, skipping insertion in model container [2021-10-28 22:55:12,144 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:55:12" (1/1) ... [2021-10-28 22:55:12,151 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 22:55:12,163 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 22:55:12,326 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa8d5d6-dd9f-44f3-9954-b0209ce2f631/sv-benchmarks/c/recursive-with-pointer/simple-recursive.c[439,452] [2021-10-28 22:55:12,331 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 22:55:12,340 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 22:55:12,353 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa8d5d6-dd9f-44f3-9954-b0209ce2f631/sv-benchmarks/c/recursive-with-pointer/simple-recursive.c[439,452] [2021-10-28 22:55:12,356 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 22:55:12,369 INFO L208 MainTranslator]: Completed translation [2021-10-28 22:55:12,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:55:12 WrapperNode [2021-10-28 22:55:12,370 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 22:55:12,371 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 22:55:12,371 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 22:55:12,372 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 22:55:12,379 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:55:12" (1/1) ... [2021-10-28 22:55:12,386 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:55:12" (1/1) ... [2021-10-28 22:55:12,402 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 22:55:12,403 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 22:55:12,404 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 22:55:12,404 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 22:55:12,412 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:55:12" (1/1) ... [2021-10-28 22:55:12,412 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:55:12" (1/1) ... [2021-10-28 22:55:12,414 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:55:12" (1/1) ... [2021-10-28 22:55:12,414 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:55:12" (1/1) ... [2021-10-28 22:55:12,419 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:55:12" (1/1) ... [2021-10-28 22:55:12,420 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:55:12" (1/1) ... [2021-10-28 22:55:12,421 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:55:12" (1/1) ... [2021-10-28 22:55:12,423 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 22:55:12,424 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 22:55:12,424 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 22:55:12,424 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 22:55:12,426 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:55:12" (1/1) ... [2021-10-28 22:55:12,433 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 22:55:12,443 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa8d5d6-dd9f-44f3-9954-b0209ce2f631/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:55:12,455 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa8d5d6-dd9f-44f3-9954-b0209ce2f631/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 22:55:12,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa8d5d6-dd9f-44f3-9954-b0209ce2f631/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 22:55:12,508 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2021-10-28 22:55:12,508 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2021-10-28 22:55:12,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 22:55:12,509 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 22:55:12,509 INFO L130 BoogieDeclarations]: Found specification of procedure plus [2021-10-28 22:55:12,509 INFO L138 BoogieDeclarations]: Found implementation of procedure plus [2021-10-28 22:55:12,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-10-28 22:55:12,510 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 22:55:12,510 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 22:55:12,510 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-10-28 22:55:12,510 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-10-28 22:55:12,841 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 22:55:12,842 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-28 22:55:12,844 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:55:12 BoogieIcfgContainer [2021-10-28 22:55:12,844 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 22:55:12,846 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 22:55:12,846 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 22:55:12,849 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 22:55:12,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 10:55:12" (1/3) ... [2021-10-28 22:55:12,850 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47499a87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:55:12, skipping insertion in model container [2021-10-28 22:55:12,850 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:55:12" (2/3) ... [2021-10-28 22:55:12,851 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47499a87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:55:12, skipping insertion in model container [2021-10-28 22:55:12,851 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:55:12" (3/3) ... [2021-10-28 22:55:12,852 INFO L111 eAbstractionObserver]: Analyzing ICFG simple-recursive.c [2021-10-28 22:55:12,857 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 22:55:12,858 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 22:55:12,905 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 22:55:12,912 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 22:55:12,913 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-28 22:55:12,928 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 12 states have (on average 1.25) internal successors, (15), 14 states have internal predecessors, (15), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-10-28 22:55:12,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-28 22:55:12,933 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:55:12,934 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:55:12,934 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting fooErr0ASSERT_VIOLATIONERROR_FUNCTION === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 22:55:12,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:55:12,940 INFO L85 PathProgramCache]: Analyzing trace with hash -694887038, now seen corresponding path program 1 times [2021-10-28 22:55:12,949 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:55:12,950 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287273819] [2021-10-28 22:55:12,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:55:12,951 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:55:13,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:55:13,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:55:13,142 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:55:13,142 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287273819] [2021-10-28 22:55:13,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287273819] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 22:55:13,143 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 22:55:13,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-28 22:55:13,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770916214] [2021-10-28 22:55:13,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-28 22:55:13,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:55:13,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-28 22:55:13,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-28 22:55:13,165 INFO L87 Difference]: Start difference. First operand has 19 states, 12 states have (on average 1.25) internal successors, (15), 14 states have internal predecessors, (15), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:55:13,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:55:13,223 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2021-10-28 22:55:13,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-28 22:55:13,225 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-10-28 22:55:13,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:55:13,232 INFO L225 Difference]: With dead ends: 33 [2021-10-28 22:55:13,232 INFO L226 Difference]: Without dead ends: 14 [2021-10-28 22:55:13,234 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-28 22:55:13,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-10-28 22:55:13,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2021-10-28 22:55:13,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:55:13,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2021-10-28 22:55:13,264 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 7 [2021-10-28 22:55:13,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:55:13,264 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2021-10-28 22:55:13,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:55:13,265 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2021-10-28 22:55:13,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-28 22:55:13,265 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:55:13,266 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 22:55:13,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 22:55:13,266 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting fooErr0ASSERT_VIOLATIONERROR_FUNCTION === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 22:55:13,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:55:13,267 INFO L85 PathProgramCache]: Analyzing trace with hash -2070363059, now seen corresponding path program 1 times [2021-10-28 22:55:13,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:55:13,268 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78714225] [2021-10-28 22:55:13,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:55:13,268 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:55:13,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:55:13,381 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:55:13,381 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:55:13,381 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78714225] [2021-10-28 22:55:13,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78714225] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:55:13,382 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2133131697] [2021-10-28 22:55:13,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:55:13,382 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:55:13,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa8d5d6-dd9f-44f3-9954-b0209ce2f631/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:55:13,384 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa8d5d6-dd9f-44f3-9954-b0209ce2f631/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 22:55:13,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa8d5d6-dd9f-44f3-9954-b0209ce2f631/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-28 22:55:13,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:55:13,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 41 conjunts are in the unsatisfiable core [2021-10-28 22:55:13,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:55:13,539 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-10-28 22:55:13,707 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-10-28 22:55:13,707 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2021-10-28 22:55:13,823 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:55:13,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2133131697] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:55:13,823 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 22:55:13,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-10-28 22:55:13,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709220304] [2021-10-28 22:55:13,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-10-28 22:55:13,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:55:13,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-10-28 22:55:13,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2021-10-28 22:55:13,827 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand has 16 states, 12 states have (on average 1.25) internal successors, (15), 10 states have internal predecessors, (15), 6 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:55:13,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:55:13,985 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2021-10-28 22:55:13,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-10-28 22:55:13,986 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 12 states have (on average 1.25) internal successors, (15), 10 states have internal predecessors, (15), 6 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-28 22:55:13,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:55:13,987 INFO L225 Difference]: With dead ends: 22 [2021-10-28 22:55:13,987 INFO L226 Difference]: Without dead ends: 19 [2021-10-28 22:55:13,990 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2021-10-28 22:55:13,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-10-28 22:55:13,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2021-10-28 22:55:13,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 12 states have (on average 1.0833333333333333) internal successors, (13), 12 states have internal predecessors, (13), 5 states have call successors, (5), 5 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:55:14,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2021-10-28 22:55:14,003 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 12 [2021-10-28 22:55:14,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:55:14,003 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2021-10-28 22:55:14,004 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 12 states have (on average 1.25) internal successors, (15), 10 states have internal predecessors, (15), 6 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:55:14,005 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2021-10-28 22:55:14,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-28 22:55:14,007 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 22:55:14,007 INFO L513 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-10-28 22:55:14,046 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa8d5d6-dd9f-44f3-9954-b0209ce2f631/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-28 22:55:14,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa8d5d6-dd9f-44f3-9954-b0209ce2f631/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:55:14,238 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting fooErr0ASSERT_VIOLATIONERROR_FUNCTION === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 22:55:14,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 22:55:14,239 INFO L85 PathProgramCache]: Analyzing trace with hash -176397214, now seen corresponding path program 2 times [2021-10-28 22:55:14,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 22:55:14,240 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997217198] [2021-10-28 22:55:14,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 22:55:14,240 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 22:55:14,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 22:55:14,400 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 22:55:14,400 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 22:55:14,400 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997217198] [2021-10-28 22:55:14,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997217198] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:55:14,401 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1881767271] [2021-10-28 22:55:14,401 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-28 22:55:14,401 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:55:14,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa8d5d6-dd9f-44f3-9954-b0209ce2f631/bin/uautomizer-GMMbpWq8iD/z3 [2021-10-28 22:55:14,406 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa8d5d6-dd9f-44f3-9954-b0209ce2f631/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-28 22:55:14,408 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa8d5d6-dd9f-44f3-9954-b0209ce2f631/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-28 22:55:14,485 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-28 22:55:14,485 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-28 22:55:14,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 35 conjunts are in the unsatisfiable core [2021-10-28 22:55:14,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-28 22:55:14,529 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2021-10-28 22:55:14,622 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2021-10-28 22:55:14,722 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2021-10-28 22:55:14,770 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-28 22:55:14,771 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1881767271] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-28 22:55:14,771 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-10-28 22:55:14,771 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9] total 20 [2021-10-28 22:55:14,771 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983455456] [2021-10-28 22:55:14,772 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-10-28 22:55:14,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 22:55:14,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-10-28 22:55:14,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2021-10-28 22:55:14,776 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand has 20 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 13 states have internal predecessors, (22), 8 states have call successors, (10), 8 states have call predecessors, (10), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:55:15,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 22:55:15,129 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2021-10-28 22:55:15,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-10-28 22:55:15,129 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 13 states have internal predecessors, (22), 8 states have call successors, (10), 8 states have call predecessors, (10), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2021-10-28 22:55:15,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 22:55:15,130 INFO L225 Difference]: With dead ends: 25 [2021-10-28 22:55:15,130 INFO L226 Difference]: Without dead ends: 0 [2021-10-28 22:55:15,131 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=150, Invalid=780, Unknown=0, NotChecked=0, Total=930 [2021-10-28 22:55:15,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-28 22:55:15,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-28 22:55:15,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:55:15,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-28 22:55:15,132 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 17 [2021-10-28 22:55:15,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 22:55:15,132 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-28 22:55:15,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 13 states have internal predecessors, (22), 8 states have call successors, (10), 8 states have call predecessors, (10), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 22:55:15,132 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-28 22:55:15,133 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-28 22:55:15,135 INFO L764 garLoopResultBuilder]: Registering result SAFE for location fooErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 22:55:15,185 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa8d5d6-dd9f-44f3-9954-b0209ce2f631/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-28 22:55:15,336 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa8d5d6-dd9f-44f3-9954-b0209ce2f631/bin/uautomizer-GMMbpWq8iD/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-28 22:55:15,337 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-28 22:55:15,341 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 22:55:15,344 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 22:55:15,349 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 22:55:15,358 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 22:55:15,359 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 22:55:15,360 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 22:55:15,367 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 22:55:15,369 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 22:55:15,371 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 22:55:15,372 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 22:55:15,373 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 22:55:15,374 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 22:55:15,382 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 22:55:15,383 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 22:55:15,383 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 22:55:15,385 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 22:55:15,386 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-28 22:55:15,603 INFO L857 garLoopResultBuilder]: For program point fooEXIT(lines 11 20) no Hoare annotation was computed. [2021-10-28 22:55:15,604 INFO L853 garLoopResultBuilder]: At program point fooENTRY(lines 11 20) the Hoare annotation is: (let ((.cse4 (select |#memory_int| |foo_#in~p.base|)) (.cse3 (select |old(#memory_int)| |foo_#in~p.base|))) (let ((.cse2 (not (= |foo_#in~p.offset| 0))) (.cse0 (select .cse3 |foo_#in~p.offset|)) (.cse1 (select .cse4 |foo_#in~p.offset|))) (and (or (not (<= .cse0 12)) (<= .cse1 12)) (or (= .cse1 10) .cse2 (not (= .cse0 10))) (or (not (= (select .cse3 0) 11)) .cse2 (= (select .cse4 0) 11)) (or (not (< .cse0 21)) (< .cse1 21))))) [2021-10-28 22:55:15,604 INFO L857 garLoopResultBuilder]: For program point L18(line 18) no Hoare annotation was computed. [2021-10-28 22:55:15,604 INFO L857 garLoopResultBuilder]: For program point fooErr0ASSERT_VIOLATIONERROR_FUNCTION(line 18) no Hoare annotation was computed. [2021-10-28 22:55:15,604 INFO L857 garLoopResultBuilder]: For program point L14(lines 14 19) no Hoare annotation was computed. [2021-10-28 22:55:15,604 INFO L853 garLoopResultBuilder]: At program point L13(line 13) the Hoare annotation is: (let ((.cse4 (select |old(#memory_int)| |foo_#in~p.base|))) (let ((.cse0 (select .cse4 |foo_#in~p.offset|)) (.cse3 (not (= |foo_#in~p.offset| 0))) (.cse2 (select (select |#memory_int| foo_~p.base) foo_~p.offset)) (.cse1 (select (select |#memory_int| |foo_#in~p.base|) |foo_#in~p.offset|))) (and (or (not (< .cse0 21)) (and (< .cse1 21) (< .cse2 20))) (or (not (<= .cse0 12)) (<= .cse1 12)) (or (and (= .cse1 10) (= foo_~p.offset 0) (= .cse2 10)) .cse3 (not (= .cse0 10))) (or (not (= (select .cse4 0) 11)) .cse3 (and (<= .cse2 11) (<= .cse1 11)))))) [2021-10-28 22:55:15,604 INFO L857 garLoopResultBuilder]: For program point L12(lines 12 19) no Hoare annotation was computed. [2021-10-28 22:55:15,605 INFO L857 garLoopResultBuilder]: For program point L12-1(lines 11 20) no Hoare annotation was computed. [2021-10-28 22:55:15,605 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-28 22:55:15,605 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-28 22:55:15,605 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-28 22:55:15,605 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-28 22:55:15,605 INFO L853 garLoopResultBuilder]: At program point L27(line 27) the Hoare annotation is: (and (= (select (select |#memory_int| ULTIMATE.start_main_~p~0.base) ULTIMATE.start_main_~p~0.offset) 10) (= ULTIMATE.start_main_~p~0.offset 0)) [2021-10-28 22:55:15,605 INFO L857 garLoopResultBuilder]: For program point L27-1(line 27) no Hoare annotation was computed. [2021-10-28 22:55:15,606 INFO L857 garLoopResultBuilder]: For program point L22(lines 22 28) no Hoare annotation was computed. [2021-10-28 22:55:15,606 INFO L857 garLoopResultBuilder]: For program point plusFINAL(lines 6 9) no Hoare annotation was computed. [2021-10-28 22:55:15,606 INFO L853 garLoopResultBuilder]: At program point plusENTRY(lines 6 9) the Hoare annotation is: (let ((.cse0 (select (select |#memory_int| |plus_#in~p.base|) |plus_#in~p.offset|)) (.cse1 (select (select |old(#memory_int)| |plus_#in~p.base|) |plus_#in~p.offset|))) (and (or (< .cse0 20) (not (< .cse1 20))) (or (not (= .cse1 10)) (not (= |plus_#in~p.offset| 0)) (= .cse0 10)) (or (<= .cse0 11) (not (<= .cse1 11))))) [2021-10-28 22:55:15,606 INFO L857 garLoopResultBuilder]: For program point plusEXIT(lines 6 9) no Hoare annotation was computed. [2021-10-28 22:55:15,606 INFO L853 garLoopResultBuilder]: At program point L8(line 8) the Hoare annotation is: (let ((.cse3 (select |#memory_int| plus_~p.base))) (let ((.cse2 (select (select |#memory_int| |plus_#in~p.base|) |plus_#in~p.offset|)) (.cse0 (select .cse3 plus_~p.offset)) (.cse1 (select (select |old(#memory_int)| |plus_#in~p.base|) |plus_#in~p.offset|))) (and (or (< .cse0 21) (not (< .cse1 20))) (or (not (= .cse1 10)) (not (= |plus_#in~p.offset| 0)) (and (= plus_~p.offset 0) (<= .cse2 11) (= (select .cse3 0) 11))) (or (and (< .cse2 20) (<= .cse0 12)) (not (<= .cse1 11)))))) [2021-10-28 22:55:15,609 INFO L731 BasicCegarLoop]: Path program histogram: [2, 1] [2021-10-28 22:55:15,611 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 22:55:15,613 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 10:55:15 BoogieIcfgContainer [2021-10-28 22:55:15,613 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 22:55:15,614 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 22:55:15,614 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 22:55:15,614 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 22:55:15,614 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:55:12" (3/4) ... [2021-10-28 22:55:15,620 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-28 22:55:15,626 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure foo [2021-10-28 22:55:15,626 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure plus [2021-10-28 22:55:15,631 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-10-28 22:55:15,632 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-10-28 22:55:15,632 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-28 22:55:15,632 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-28 22:55:15,684 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa8d5d6-dd9f-44f3-9954-b0209ce2f631/bin/uautomizer-GMMbpWq8iD/witness.graphml [2021-10-28 22:55:15,685 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 22:55:15,686 INFO L168 Benchmark]: Toolchain (without parser) took 3554.17 ms. Allocated memory was 90.2 MB in the beginning and 119.5 MB in the end (delta: 29.4 MB). Free memory was 54.3 MB in the beginning and 69.7 MB in the end (delta: -15.4 MB). Peak memory consumption was 14.6 MB. Max. memory is 16.1 GB. [2021-10-28 22:55:15,687 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 90.2 MB. Free memory was 62.7 MB in the beginning and 62.7 MB in the end (delta: 25.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 22:55:15,688 INFO L168 Benchmark]: CACSL2BoogieTranslator took 231.19 ms. Allocated memory was 90.2 MB in the beginning and 119.5 MB in the end (delta: 29.4 MB). Free memory was 54.1 MB in the beginning and 94.6 MB in the end (delta: -40.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-28 22:55:15,691 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.52 ms. Allocated memory is still 119.5 MB. Free memory was 94.6 MB in the beginning and 93.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 22:55:15,691 INFO L168 Benchmark]: Boogie Preprocessor took 20.10 ms. Allocated memory is still 119.5 MB. Free memory was 93.2 MB in the beginning and 92.5 MB in the end (delta: 727.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 22:55:15,692 INFO L168 Benchmark]: RCFGBuilder took 419.97 ms. Allocated memory is still 119.5 MB. Free memory was 92.5 MB in the beginning and 82.0 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 22:55:15,697 INFO L168 Benchmark]: TraceAbstraction took 2767.57 ms. Allocated memory is still 119.5 MB. Free memory was 81.3 MB in the beginning and 71.8 MB in the end (delta: 9.5 MB). Peak memory consumption was 11.3 MB. Max. memory is 16.1 GB. [2021-10-28 22:55:15,697 INFO L168 Benchmark]: Witness Printer took 70.91 ms. Allocated memory is still 119.5 MB. Free memory was 71.8 MB in the beginning and 69.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 22:55:15,699 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 90.2 MB. Free memory was 62.7 MB in the beginning and 62.7 MB in the end (delta: 25.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 231.19 ms. Allocated memory was 90.2 MB in the beginning and 119.5 MB in the end (delta: 29.4 MB). Free memory was 54.1 MB in the beginning and 94.6 MB in the end (delta: -40.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 31.52 ms. Allocated memory is still 119.5 MB. Free memory was 94.6 MB in the beginning and 93.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.10 ms. Allocated memory is still 119.5 MB. Free memory was 93.2 MB in the beginning and 92.5 MB in the end (delta: 727.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 419.97 ms. Allocated memory is still 119.5 MB. Free memory was 92.5 MB in the beginning and 82.0 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2767.57 ms. Allocated memory is still 119.5 MB. Free memory was 81.3 MB in the beginning and 71.8 MB in the end (delta: 9.5 MB). Peak memory consumption was 11.3 MB. Max. memory is 16.1 GB. * Witness Printer took 70.91 ms. Allocated memory is still 119.5 MB. Free memory was 71.8 MB in the beginning and 69.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.7s, OverallIterations: 3, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 33 SDtfs, 11 SDslu, 83 SDs, 0 SdLazy, 258 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 69 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, InterpolantAutomatonStates: 37, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 17 PreInvPairs, 17 NumberOfFragments, 309 HoareAnnotationTreeSize, 17 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 53 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 65 NumberOfCodeBlocks, 65 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 60 ConstructedInterpolants, 0 QuantifiedInterpolants, 329 SizeOfPredicates, 25 NumberOfNonLiveVariables, 222 ConjunctsInSsa, 76 ConjunctsInUnsatCore, 5 InterpolantComputations, 1 PerfectInterpolantSequences, 8/22 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-10-28 22:55:15,749 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_daa8d5d6-dd9f-44f3-9954-b0209ce2f631/bin/uautomizer-GMMbpWq8iD/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...