./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loops/while_infinite_loop_3.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f836f8-b02b-42c6-a6fb-88ad0d232692/bin/uautomizer-WNIpwEf4Nt/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f836f8-b02b-42c6-a6fb-88ad0d232692/bin/uautomizer-WNIpwEf4Nt/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f836f8-b02b-42c6-a6fb-88ad0d232692/bin/uautomizer-WNIpwEf4Nt/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f836f8-b02b-42c6-a6fb-88ad0d232692/bin/uautomizer-WNIpwEf4Nt/config/AutomizerReach.xml -i ../../sv-benchmarks/c/loops/while_infinite_loop_3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f836f8-b02b-42c6-a6fb-88ad0d232692/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f836f8-b02b-42c6-a6fb-88ad0d232692/bin/uautomizer-WNIpwEf4Nt --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 3aac8fad8f983ba6915be6b6d24065853819d497 ........................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 01:22:41,913 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 01:22:41,916 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 01:22:41,977 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 01:22:41,978 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 01:22:41,985 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 01:22:41,988 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 01:22:41,994 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 01:22:41,997 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 01:22:42,007 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 01:22:42,009 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 01:22:42,011 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 01:22:42,012 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 01:22:42,016 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 01:22:42,019 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 01:22:42,026 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 01:22:42,027 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 01:22:42,029 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 01:22:42,032 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 01:22:42,041 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 01:22:42,043 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 01:22:42,045 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 01:22:42,047 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 01:22:42,048 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 01:22:42,053 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 01:22:42,053 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 01:22:42,054 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 01:22:42,055 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 01:22:42,056 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 01:22:42,058 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 01:22:42,058 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 01:22:42,059 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 01:22:42,061 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 01:22:42,062 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 01:22:42,063 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 01:22:42,064 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 01:22:42,065 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 01:22:42,065 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 01:22:42,065 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 01:22:42,067 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 01:22:42,068 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 01:22:42,069 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f836f8-b02b-42c6-a6fb-88ad0d232692/bin/uautomizer-WNIpwEf4Nt/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-13 01:22:42,099 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 01:22:42,102 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 01:22:42,103 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-13 01:22:42,103 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-13 01:22:42,105 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-13 01:22:42,106 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-13 01:22:42,106 INFO L138 SettingsManager]: * Use SBE=true [2021-10-13 01:22:42,106 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 01:22:42,107 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 01:22:42,107 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 01:22:42,108 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 01:22:42,109 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 01:22:42,109 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 01:22:42,109 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 01:22:42,109 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 01:22:42,110 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 01:22:42,110 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 01:22:42,110 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 01:22:42,110 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 01:22:42,111 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 01:22:42,111 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-13 01:22:42,111 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 01:22:42,112 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 01:22:42,112 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 01:22:42,112 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 01:22:42,113 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 01:22:42,113 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-13 01:22:42,113 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 01:22:42,113 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 01:22:42,115 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 01:22:42,116 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_60f836f8-b02b-42c6-a6fb-88ad0d232692/bin/uautomizer-WNIpwEf4Nt/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f836f8-b02b-42c6-a6fb-88ad0d232692/bin/uautomizer-WNIpwEf4Nt Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3aac8fad8f983ba6915be6b6d24065853819d497 [2021-10-13 01:22:42,522 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 01:22:42,548 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 01:22:42,552 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 01:22:42,554 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 01:22:42,555 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 01:22:42,556 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f836f8-b02b-42c6-a6fb-88ad0d232692/bin/uautomizer-WNIpwEf4Nt/../../sv-benchmarks/c/loops/while_infinite_loop_3.c [2021-10-13 01:22:42,656 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f836f8-b02b-42c6-a6fb-88ad0d232692/bin/uautomizer-WNIpwEf4Nt/data/e5b83487a/00b815e1ca4e4432ac0d9032d7dbe3bd/FLAGa0e690594 [2021-10-13 01:22:43,228 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 01:22:43,230 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f836f8-b02b-42c6-a6fb-88ad0d232692/sv-benchmarks/c/loops/while_infinite_loop_3.c [2021-10-13 01:22:43,244 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f836f8-b02b-42c6-a6fb-88ad0d232692/bin/uautomizer-WNIpwEf4Nt/data/e5b83487a/00b815e1ca4e4432ac0d9032d7dbe3bd/FLAGa0e690594 [2021-10-13 01:22:43,570 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f836f8-b02b-42c6-a6fb-88ad0d232692/bin/uautomizer-WNIpwEf4Nt/data/e5b83487a/00b815e1ca4e4432ac0d9032d7dbe3bd [2021-10-13 01:22:43,576 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 01:22:43,578 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 01:22:43,581 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 01:22:43,581 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 01:22:43,586 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 01:22:43,587 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:22:43" (1/1) ... [2021-10-13 01:22:43,590 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42fc341a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:22:43, skipping insertion in model container [2021-10-13 01:22:43,591 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 01:22:43" (1/1) ... [2021-10-13 01:22:43,607 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 01:22:43,629 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 01:22:43,827 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_60f836f8-b02b-42c6-a6fb-88ad0d232692/sv-benchmarks/c/loops/while_infinite_loop_3.c[333,346] [2021-10-13 01:22:43,840 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 01:22:43,851 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 01:22:43,866 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_60f836f8-b02b-42c6-a6fb-88ad0d232692/sv-benchmarks/c/loops/while_infinite_loop_3.c[333,346] [2021-10-13 01:22:43,869 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 01:22:43,886 INFO L208 MainTranslator]: Completed translation [2021-10-13 01:22:43,886 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:22:43 WrapperNode [2021-10-13 01:22:43,887 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 01:22:43,888 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 01:22:43,889 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 01:22:43,889 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 01:22:43,899 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:22:43" (1/1) ... [2021-10-13 01:22:43,907 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:22:43" (1/1) ... [2021-10-13 01:22:43,928 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 01:22:43,929 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 01:22:43,930 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 01:22:43,930 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 01:22:43,940 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:22:43" (1/1) ... [2021-10-13 01:22:43,941 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:22:43" (1/1) ... [2021-10-13 01:22:43,942 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:22:43" (1/1) ... [2021-10-13 01:22:43,942 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:22:43" (1/1) ... [2021-10-13 01:22:43,946 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:22:43" (1/1) ... [2021-10-13 01:22:43,951 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:22:43" (1/1) ... [2021-10-13 01:22:43,953 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:22:43" (1/1) ... [2021-10-13 01:22:43,955 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 01:22:43,956 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 01:22:43,956 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 01:22:43,956 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 01:22:43,958 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:22:43" (1/1) ... [2021-10-13 01:22:43,968 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 01:22:43,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f836f8-b02b-42c6-a6fb-88ad0d232692/bin/uautomizer-WNIpwEf4Nt/z3 [2021-10-13 01:22:44,001 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f836f8-b02b-42c6-a6fb-88ad0d232692/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 01:22:44,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f836f8-b02b-42c6-a6fb-88ad0d232692/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 01:22:44,063 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 01:22:44,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 01:22:44,065 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 01:22:44,065 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 01:22:44,291 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 01:22:44,292 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2021-10-13 01:22:44,294 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:22:44 BoogieIcfgContainer [2021-10-13 01:22:44,294 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 01:22:44,296 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 01:22:44,297 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 01:22:44,302 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 01:22:44,302 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 01:22:43" (1/3) ... [2021-10-13 01:22:44,303 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a9b29f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:22:44, skipping insertion in model container [2021-10-13 01:22:44,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 01:22:43" (2/3) ... [2021-10-13 01:22:44,304 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a9b29f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 01:22:44, skipping insertion in model container [2021-10-13 01:22:44,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:22:44" (3/3) ... [2021-10-13 01:22:44,306 INFO L111 eAbstractionObserver]: Analyzing ICFG while_infinite_loop_3.c [2021-10-13 01:22:44,312 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 01:22:44,312 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-13 01:22:44,398 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 01:22:44,407 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, mConcurrency=FINITE_AUTOMATA, 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 [2021-10-13 01:22:44,407 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-13 01:22:44,433 INFO L276 IsEmpty]: Start isEmpty. Operand has 16 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 15 states have internal predecessors, (21), 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) [2021-10-13 01:22:44,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-13 01:22:44,440 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:22:44,441 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-13 01:22:44,441 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 01:22:44,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:22:44,448 INFO L82 PathProgramCache]: Analyzing trace with hash 890491815, now seen corresponding path program 1 times [2021-10-13 01:22:44,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:22:44,460 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486621672] [2021-10-13 01:22:44,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:22:44,462 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:22:44,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:22:44,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:22:44,704 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:22:44,704 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486621672] [2021-10-13 01:22:44,705 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [486621672] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:22:44,706 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:22:44,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 01:22:44,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522302945] [2021-10-13 01:22:44,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 01:22:44,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:22:44,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 01:22:44,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 01:22:44,734 INFO L87 Difference]: Start difference. First operand has 16 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 15 states have internal predecessors, (21), 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) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2021-10-13 01:22:44,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:22:44,753 INFO L93 Difference]: Finished difference Result 22 states and 32 transitions. [2021-10-13 01:22:44,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 01:22:44,755 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) Word has length 6 [2021-10-13 01:22:44,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:22:44,765 INFO L225 Difference]: With dead ends: 22 [2021-10-13 01:22:44,765 INFO L226 Difference]: Without dead ends: 8 [2021-10-13 01:22:44,769 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 01:22:44,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2021-10-13 01:22:44,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2021-10-13 01:22:44,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 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) [2021-10-13 01:22:44,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2021-10-13 01:22:44,809 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2021-10-13 01:22:44,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:22:44,810 INFO L470 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2021-10-13 01:22:44,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2021-10-13 01:22:44,811 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2021-10-13 01:22:44,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-13 01:22:44,811 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 01:22:44,812 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-13 01:22:44,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 01:22:44,813 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 01:22:44,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 01:22:44,814 INFO L82 PathProgramCache]: Analyzing trace with hash 1810848111, now seen corresponding path program 1 times [2021-10-13 01:22:44,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-13 01:22:44,815 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746941652] [2021-10-13 01:22:44,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 01:22:44,816 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 01:22:44,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 01:22:44,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 01:22:44,901 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-13 01:22:44,902 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746941652] [2021-10-13 01:22:44,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746941652] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 01:22:44,902 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 01:22:44,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 01:22:44,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282618910] [2021-10-13 01:22:44,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 01:22:44,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-13 01:22:44,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 01:22:44,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-13 01:22:44,908 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2021-10-13 01:22:44,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 01:22:44,937 INFO L93 Difference]: Finished difference Result 11 states and 11 transitions. [2021-10-13 01:22:44,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 01:22:44,938 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) Word has length 7 [2021-10-13 01:22:44,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 01:22:44,938 INFO L225 Difference]: With dead ends: 11 [2021-10-13 01:22:44,939 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 01:22:44,940 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.0ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-13 01:22:44,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 01:22:44,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 01:22:44,941 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) [2021-10-13 01:22:44,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 01:22:44,941 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2021-10-13 01:22:44,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 01:22:44,942 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 01:22:44,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) [2021-10-13 01:22:44,942 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 01:22:44,943 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 01:22:44,946 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 01:22:44,947 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 01:22:44,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 01:22:44,951 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-13 01:22:44,958 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:44,974 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:44,985 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:44,986 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:45,003 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 01:22:45,016 INFO L853 garLoopResultBuilder]: At program point L6-5(lines 5 10) the Hoare annotation is: false [2021-10-13 01:22:45,017 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 7) no Hoare annotation was computed. [2021-10-13 01:22:45,017 INFO L857 garLoopResultBuilder]: For program point L7(line 7) no Hoare annotation was computed. [2021-10-13 01:22:45,017 INFO L857 garLoopResultBuilder]: For program point L7-1(line 7) no Hoare annotation was computed. [2021-10-13 01:22:45,017 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-13 01:22:45,018 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-13 01:22:45,018 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-13 01:22:45,018 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) no Hoare annotation was computed. [2021-10-13 01:22:45,019 INFO L853 garLoopResultBuilder]: At program point L16loopEntry(lines 16 19) the Hoare annotation is: (= ~x~0 0) [2021-10-13 01:22:45,019 INFO L853 garLoopResultBuilder]: At program point L16-2(lines 14 21) the Hoare annotation is: (= ~x~0 0) [2021-10-13 01:22:45,019 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-13 01:22:45,020 INFO L853 garLoopResultBuilder]: At program point L34(lines 24 35) the Hoare annotation is: false [2021-10-13 01:22:45,027 INFO L857 garLoopResultBuilder]: For program point L26-2(lines 26 30) no Hoare annotation was computed. [2021-10-13 01:22:45,027 INFO L857 garLoopResultBuilder]: For program point L6(lines 6 8) no Hoare annotation was computed. [2021-10-13 01:22:45,027 INFO L853 garLoopResultBuilder]: At program point L6-2(lines 5 30) the Hoare annotation is: (= ~x~0 0) [2021-10-13 01:22:45,028 INFO L857 garLoopResultBuilder]: For program point L6-3(lines 6 8) no Hoare annotation was computed. [2021-10-13 01:22:45,034 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 01:22:45,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 01:22:45 BoogieIcfgContainer [2021-10-13 01:22:45,055 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 01:22:45,057 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 01:22:45,058 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 01:22:45,058 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 01:22:45,059 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 01:22:44" (3/4) ... [2021-10-13 01:22:45,063 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 01:22:45,080 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-13 01:22:45,081 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-10-13 01:22:45,081 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 01:22:45,082 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 01:22:45,142 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f836f8-b02b-42c6-a6fb-88ad0d232692/bin/uautomizer-WNIpwEf4Nt/witness.graphml [2021-10-13 01:22:45,144 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 01:22:45,146 INFO L168 Benchmark]: Toolchain (without parser) took 1567.73 ms. Allocated memory is still 109.1 MB. Free memory was 71.3 MB in the beginning and 45.0 MB in the end (delta: 26.4 MB). Peak memory consumption was 24.4 MB. Max. memory is 16.1 GB. [2021-10-13 01:22:45,147 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 109.1 MB. Free memory was 87.5 MB in the beginning and 87.4 MB in the end (delta: 66.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 01:22:45,148 INFO L168 Benchmark]: CACSL2BoogieTranslator took 306.59 ms. Allocated memory is still 109.1 MB. Free memory was 71.1 MB in the beginning and 84.1 MB in the end (delta: -13.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-13 01:22:45,149 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.35 ms. Allocated memory is still 109.1 MB. Free memory was 84.1 MB in the beginning and 83.0 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 01:22:45,154 INFO L168 Benchmark]: Boogie Preprocessor took 25.62 ms. Allocated memory is still 109.1 MB. Free memory was 83.0 MB in the beginning and 81.9 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 01:22:45,159 INFO L168 Benchmark]: RCFGBuilder took 338.70 ms. Allocated memory is still 109.1 MB. Free memory was 81.9 MB in the beginning and 73.0 MB in the end (delta: 9.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 01:22:45,160 INFO L168 Benchmark]: TraceAbstraction took 758.36 ms. Allocated memory is still 109.1 MB. Free memory was 72.2 MB in the beginning and 47.4 MB in the end (delta: 24.8 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. [2021-10-13 01:22:45,160 INFO L168 Benchmark]: Witness Printer took 86.80 ms. Allocated memory is still 109.1 MB. Free memory was 47.1 MB in the beginning and 45.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 01:22:45,163 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 109.1 MB. Free memory was 87.5 MB in the beginning and 87.4 MB in the end (delta: 66.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 306.59 ms. Allocated memory is still 109.1 MB. Free memory was 71.1 MB in the beginning and 84.1 MB in the end (delta: -13.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 40.35 ms. Allocated memory is still 109.1 MB. Free memory was 84.1 MB in the beginning and 83.0 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.62 ms. Allocated memory is still 109.1 MB. Free memory was 83.0 MB in the beginning and 81.9 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 338.70 ms. Allocated memory is still 109.1 MB. Free memory was 81.9 MB in the beginning and 73.0 MB in the end (delta: 9.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 758.36 ms. Allocated memory is still 109.1 MB. Free memory was 72.2 MB in the beginning and 47.4 MB in the end (delta: 24.8 MB). Peak memory consumption was 25.2 MB. Max. memory is 16.1 GB. * Witness Printer took 86.80 ms. Allocated memory is still 109.1 MB. Free memory was 47.1 MB in the beginning and 45.0 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, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 7]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 7]: 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 1 procedures, 16 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 637.5ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 12.3ms, AutomataDifference: 87.5ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 66.5ms, InitialAbstractionConstructionTime: 21.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 14 SDtfs, 7 SDslu, 4 SDs, 0 SdLazy, 3 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 9.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 21.0ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, InterpolantAutomatonStates: 6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 22.4ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 11 NumberOfFragments, 11 HoareAnnotationTreeSize, 5 FomulaSimplifications, 27 FormulaSimplificationTreeSizeReduction, 48.6ms HoareSimplificationTime, 5 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 8.0ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 9.9ms SsaConstructionTime, 48.5ms SatisfiabilityAnalysisTime, 128.5ms InterpolantComputationTime, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 16 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 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 2 specifications checked. All of them hold - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: x == 0 - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: x == 0 - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: x == 0 - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 0 RESULT: Ultimate proved your program to be correct! [2021-10-13 01:22:45,235 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60f836f8-b02b-42c6-a6fb-88ad0d232692/bin/uautomizer-WNIpwEf4Nt/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...